Congratulations on the launch of Chuanbenste Refrigeration's new product

Cooling system for new energy vehicles (water-cooled/liquid cooled)Test project:
1. Test the head and flow rate of the water pump, and obtain the flow rate and head characteristic curve of the water pump;
2. Can test the flow rate of the water pump during the actual use of the car
3. The heat dissipation characteristics of the radiator can be tested to obtain the heat dissipation characteristics of the radiator
4. Output temperature characteristic curves for each typical location
With the development of new energy power batteries, the country encourages the development of high-density, high-power, and fast charging and discharging new energy vehicles. The original new energy vehicles using air-cooled heat dissipation can no longer solve the problem of battery heat dissipation. The advantages of liquid cooling systems are fast cooling rate, good temperature uniformity, and simple control of fluid (temperature and flow rate). Liquid cooled cooling systems have become an inevitable trend in new energy vehicles. The thermal management system of the entire vehicle needs to be redesigned.
At present, there is a lack of operational data for the liquid cooling system of the battery pack (PACK), which makes it impossible for new energy vehicle manufacturers to design a liquid cooling system for the entire vehicle. Vehicle manufacturers need to understand the following data: 1) The reasonable temperature of the battery pack10-30℃，Low temperature weather liquid cooling system may reach -30The battery pack itself has a heating block inside to preheat before starting and provide thermal protection. When the battery temperature exceeds 30 ℃ after driving, it needs to be cooled through a -30 ℃ liquid cooling system. How much liquid flow is required at this time? To ensure that the battery temperature is controlled within the range of 10-30 ℃ and the diameter of the car's liquid cooling system is fixed, it is necessary to adjust the pressure to control the flow rate. Similarly, as the temperature of the car coolant changes, the flow rate and pressure of the coolant also need to be adjusted to ensure battery temperature. 2） When it's hot weather, the temperature of the car coolant and battery pack may reach over 50 ℃. What are the charging and discharging conditions of the battery pack? How to match the cooling capacity of the vehicle cooling system (including air conditioning space cooling, battery pack, electric drive, and engine liquid cooling system) to achieve rapid balance in vehicle thermal management. Ensure that the overall performance and safety of the vehicle are within a reasonable range. The above data needs to be provided by our liquid cooled thermal testing platform.

The thermal related issues of batteries are key factors determining their performance, safety, lifespan, and cost of use. Firstly, the temperature level of lithium-ion batteries directly affects their energy and power performance during use. When the temperature is low, the available capacity of the battery will rapidly decay. Charging the battery at too low a temperature (such as below 0 ° C) may cause instantaneous voltage overcharging, leading to internal lithium deposition and subsequent short circuits. Secondly, the thermal related issues of lithium-ion batteries directly affect their safety. Defects in the production and manufacturing process or improper operation during use may cause local overheating of the battery, leading to a chain reaction of heat release and ultimately causing serious thermal runaway events such as smoking, fire, and even explosion, posing a threat to the safety of vehicle drivers and passengers. In addition, the working or storage temperature of lithium-ion batteries affects their service life. The suitable temperature for batteries is between 10-30 ° C, and temperatures that are too high or too low will cause a rapid decline in battery life. The large-scale development of power batteries has led to a relative reduction in the ratio of surface area to volume, making it difficult for the internal heat of the battery to dissipate. This may result in uneven internal temperature and excessive local temperature rise, further accelerating battery degradation, shortening battery life, and increasing the total cost of ownership for users.

The battery thermal management system is one of the key technologies to address the thermal related issues of batteries and ensure the performance, safety, and lifespan of power batteries.

The main functions of a thermal management system include:

Effectively dissipate heat when the battery temperature is high to prevent thermal runaway accidents;

Preheat the battery when the temperature is low, increase the battery temperature, and ensure charging and discharging performance and safety at low temperatures;

Reduce temperature differences within the battery pack, suppress the formation of local hot zones, prevent rapid degradation of batteries at high-temperature locations, and reduce the overall lifespan of the battery pack.

The temperature environment inside the battery pack (PACK) has a significant impact on the reliability, lifespan, and performance of the battery cells. Therefore, it is particularly important to maintain the temperature inside the PACK within a certain temperature range. This is mainly achieved through cooling and heating. Here, we will briefly introduce three cooling methods: air cooling, liquid cooling, and direct cooling.

air cooling

Air cooling is a heat dissipation method that uses low-temperature air as a medium and utilizes heat convection to reduce battery temperature. It is divided into natural cooling and forced cooling (using fans, etc.). This technology utilizes natural wind or fans, combined with the car's built-in evaporator, to cool the battery. The system structure is simple and easy to maintain, and it was widely used in early electric passenger vehicles such as Nissan Leaf and Kia Soul EV. It is also widely adopted in current electric buses and electric logistics vehicles.

liquid cooling

Liquid cooling technology uses liquid convection heat transfer to remove the heat generated by the battery and reduce its temperature. The liquid medium has a high heat transfer coefficient, large heat capacity, and fast cooling rate, which can reduce high temperatures and improve the consistency of the temperature field of the battery pack. At the same time, the volume of the thermal management system is relatively small. The form of liquid cooling system is relatively flexible: battery cells or modules can be immersed in liquid, cooling channels can be set between battery modules, or cooling plates can be used at the bottom of the battery. When the battery comes into direct contact with liquid, the liquid must be insulated (such as mineral oil) to avoid short circuits. At the same time, there is a high requirement for the airtightness of liquid cooling systems. In addition, there are requirements for mechanical strength, vibration resistance, and lifespan.

Liquid cooling is currently the preferred solution for many electric passenger vehicles, with typical products both domestically and internationally such as BMW i3, Tesla, General Motors Volt, Brilliance BMW Zeno, and Geely Emgrand EV.

direct cooling

Direct cooling (refrigerant direct cooling): By utilizing the principle of latent heat of evaporation of refrigerants (such as R134a), an air conditioning system is established in a vehicle or battery system. The evaporator of the air conditioning system is installed in the battery system, and the refrigerant evaporates in the evaporator and quickly takes away the heat of the battery system, completing the task of cooling the battery system.

At present, direct cooling is mainly used in electric passenger vehicles, such as the BMW i3 (which has two cooling schemes: liquid cooling and direct cooling).

Cooling system temperature: -40 to 80 degrees with an accuracy of plus or minus 0.3

Cooling medium flow rate: 0-100L/min with an accuracy of plus or minus 3%

Fluid circulation pressure: 0-7Mpa, accuracy 0.01Mpa

The new energy battery cooling system testing platform (liquid cooling, water cooling) is mainly used for stability testing of water cooling systems for new products such as electric drives, motors, reducers, charging piles, etc. in new energy vehicles. Cooling tests such as constant temperature, constant pressure, and constant current thermal testing (5-85 degrees), high and low temperature operation testing (150 to -40 ℃), and motor cooling water system (5-30 ℃). The application scope includes electric vehicles, hybrid vehicles, aerospace, military, and scientific research. The dynamometer is designed with water cooling as the standard. Some users have oil cooled and air-cooled models. Chuanbenst specializes in the development, design, manufacturing, and sales of equipment cooling systems. According to the needs of users such as thermal conductivity materials, insulation materials, heat sinks, etc., this machine can be applied to the above industries.

Thermal management testing of liquid cooled battery packs for new energy vehiclesThe overall rendering is as follows

Shenzhen Chuanbenst Refrigeration Equipment Co., Ltd. is a professional manufacturer specializing in the research and development, production, and sales of industrial refrigeration machines and temperature and humidity control equipment. A professional solution provider for the production, research and development, installation, and maintenance of water coolers, industrial air conditioners, ice water machines, oil coolers, and constant temperature and humidity air conditioners (circulating cooling water/oil/air constant temperature machines).

1、 The standard type of cooling water circulation machine has a constant temperature range of 5-25 degrees. This machine is also known as a chiller, circulating water chiller, or ice water machine. On standard models, Kawamoto has developed low-temperature models (saltwater 0 to -10 degrees) and ultra-low temperature models (ethylene glycol -10 to -45 ℃), which are further divided into air-cooled and water-cooled models based on different heat dissipation methods.

2、 The temperature control range of room temperature water cooling equipment (such as surface coolers and cooling towers) is 25-40 degrees. Room temperature water cooling equipment controls the temperature of circulating cooling water at room temperature by dissipating heat through natural air. So it cannot be considered a thermostat, and the temperature cannot be controlled.

3、 Industrial air conditioning, also known as air coolers or air conditioning dehumidifiers. The standard temperature control range of this machine is 7-25 ℃. The relative humidity of fresh air can be dehumidified to 40-60% This machine has a lower temperature than household air conditioners and strong dehumidification function. We can customize louvers or ducts for air outlet, and provide fully enclosed negative pressure circulating gas refrigeration for special industries. Chuanben also launched a low-temperature air cooler with an outlet temperature of minus 15 ℃.

4、 Chuanben has developed a constant temperature and humidity air conditioner based on customers' demand for simultaneous control of air temperature and humidity. This machine has four functions: cooling, heating, dehumidification, and humidification. Meet the requirements of constant temperature and humidity in the production environment space of precision equipment. The air outlet temperature of this machine is 15-25 ℃, and the relative humidity is 40% -80%. And temperature and humidity can be controlled simultaneously. For the purification workshop, a middle school filtration section can be installed (this machine is called a combined air conditioning unit).

5The oil cooler is developed and produced by Chuanben Company specifically for controlling the liquid temperature of various mechanical equipment. It is widely used in industrial equipment such as machining centers, hydraulic systems, electrical processing equipment, and laser equipment that are sensitive to liquid temperature and have high heat generation. By controlling the constant temperature of the liquid, the working accuracy, stability, and reliability of the industrial equipment are greatly improved, thereby extending the service life of the equipment, reducing processing costs, and improving the efficiency of the enterprise.Chuanben specializes in producing circulating oil temperature control machines. This machine is divided into single cooling type and integrated cold and hot constant temperature type.

6、 Chuanben is also developing energy-saving and environmentally friendly products, such as air source heat pumps, water source heat pumps, heat recovery units, etc. Heat pump units save more than 50% energy compared to ordinary electric heating; The heat recovery unit not only cools but also recovers heat, saving half of its energy consumption.

After the research and development of Chuanben R&D personnel, as well as the consolidation of various information resources such as survey data, Chuanben series products have flooded the industrial market, including laser technology, welding, plastic molding, injection molding, extrusion molding, mechanical cutting processing, casting, surface treatment, electroplating, oxidation, electrophoresis, medical equipment, electronics industry, circuit board production, electronic chip manufacturing, chemical industry, papermaking, pharmaceutical industry, food processing industry, aluminum profiles, aluminum alloys, tempered glass, coated glass production, ultrasonic cleaning, jewelry processing, fur processing, ink production, printing and other industries. The scope covers the entire industrial production, and after targeted testing by Chuanben R&D personnel in various industries, its effect can be comparable to the same equipment introduced from abroad.

What type and power of temperature and humidity control machine does your company need? Chuanben can develop non-standard temperature and humidity control machines for you.

New energy vehicle liquid cooled battery pack thermal management testing platform (liquid cooled, water-cooled)

Cooling system temperature: -40 to 150 degrees with an accuracy of plus or minus 0.3

Cooling medium flow rate: 0-100L/min with an accuracy of plus or minus 3%

Fluid circulation pressure: 0-7Mpa, accuracy 0.01Mpa

The thermal related issues of batteries are key factors determining their performance, safety, lifespan, and cost of use. Firstly, the temperature level of lithium-ion batteries directly affects their energy and power performance during use. When the temperature is low, the available capacity of the battery will rapidly decay. Charging the battery at too low a temperature (such as below 0 ° C) may cause instantaneous voltage overcharging, leading to internal lithium deposition and subsequent short circuits. Secondly, the thermal related issues of lithium-ion batteries directly affect their safety. Defects in the production and manufacturing process or improper operation during use may cause local overheating of the battery, leading to a chain reaction of heat release and ultimately causing serious thermal runaway events such as smoking, fire, and even explosion, posing a threat to the safety of vehicle drivers and passengers. In addition, the working or storage temperature of lithium-ion batteries affects their service life. The suitable temperature for batteries is between 10-30 ° C, and temperatures that are too high or too low will cause a rapid decline in battery life. The large-scale development of power batteries has led to a relative reduction in the ratio of surface area to volume, making it difficult for the internal heat of the battery to dissipate. This may result in uneven internal temperature and excessive local temperature rise, further accelerating battery degradation, shortening battery life, and increasing the total cost of ownership for users.

The battery thermal management system is one of the key technologies to address the thermal related issues of batteries and ensure the performance, safety, and lifespan of power batteries.

The main functions of a thermal management system include:

Effectively dissipate heat when the battery temperature is high to prevent thermal runaway accidents;

Preheat the battery when the temperature is low, increase the battery temperature, and ensure charging and discharging performance and safety at low temperatures;

Reduce temperature differences within the battery pack, suppress the formation of local hot zones, prevent rapid degradation of batteries at high-temperature locations, and reduce the overall lifespan of the battery pack.

The temperature environment inside the battery pack (PACK) has a significant impact on the reliability, lifespan, and performance of the battery cells. Therefore, it is particularly important to maintain the temperature inside the PACK within a certain temperature range. This is mainly achieved through cooling and heating. Here, we will briefly introduce three cooling methods: air cooling, liquid cooling, and direct cooling.

air cooling

Air cooling is a heat dissipation method that uses low-temperature air as a medium and utilizes heat convection to reduce battery temperature. It is divided into natural cooling and forced cooling (using fans, etc.). This technology utilizes natural wind or fans, combined with the car's built-in evaporator, to cool the battery. The system structure is simple and easy to maintain, and it was widely used in early electric passenger vehicles such as Nissan Leaf and Kia Soul EV. It is also widely adopted in current electric buses and electric logistics vehicles.

liquid cooling

Liquid cooling technology uses liquid convection heat transfer to remove the heat generated by the battery and reduce its temperature. The liquid medium has a high heat transfer coefficient, large heat capacity, and fast cooling rate, which can reduce high temperatures and improve the consistency of the temperature field of the battery pack. At the same time, the volume of the thermal management system is relatively small. The form of liquid cooling system is relatively flexible: battery cells or modules can be immersed in liquid, cooling channels can be set between battery modules, or cooling plates can be used at the bottom of the battery. When the battery comes into direct contact with liquid, the liquid must be insulated (such as mineral oil) to avoid short circuits. At the same time, there is a high requirement for the airtightness of liquid cooling systems. In addition, there are requirements for mechanical strength, vibration resistance, and lifespan.

Liquid cooling is currently the preferred solution for many electric passenger vehicles, with typical products both domestically and internationally such as BMW i3, Tesla, General Motors Volt, Brilliance BMW Zeno, and Geely Emgrand EV.

direct cooling

Direct cooling (refrigerant direct cooling): By utilizing the principle of latent heat of evaporation of refrigerants (such as R134a), an air conditioning system is established in a vehicle or battery system. The evaporator of the air conditioning system is installed in the battery system, and the refrigerant evaporates in the evaporator and quickly takes away the heat of the battery system, completing the task of cooling the battery system.

At present, direct cooling is mainly used in electric passenger vehicles, such as the BMW i3 (which has two cooling schemes: liquid cooling and direct cooling).

Cooling system for new energy vehicles (water-cooled/liquid cooled)

electric vehiclebatteryGroup direct cooling watercooling system,includingbatteryGroup, compressor, heater, water tank, pipeline, and water pump, etc.batterypackageCooling system testing deviceCan detect various parameters of the cooling system:

1testproject
testObtain the flow rate and head characteristic curve of the water pump by measuring its head and flow rate;

It is possible to measure the flow rate of the water pump during the actual use of the cartest

It is possible to evaluate the heat dissipation characteristics of the radiatortestObtain the heat dissipation characteristics of the radiator
Output temperature characteristic curves for each typical location
Flow rate: 0-50L/min, control accuracy 0.5%