What tests are used by cooling water chillers for new energy enterprises?

The following are some typical tests that new energy enterprises use cooling water chillers for:

Battery pack testing:

• Thermal cycle test: simulate the cycle changes of battery packs under different temperature conditions to evaluate the thermal cycle performance of battery packs.
• Thermal shock test: simulate the situation where the battery pack undergoes a sharp change in temperature in a short period of time to evaluate the thermal stability of the battery pack.
• Temperature dependence test: evaluate the performance of the battery pack under different temperature conditions, such as charging and discharging capacity, energy density, etc.
• Thermal management system test: evaluate the performance of the thermal management system of the battery pack under different temperature conditions to ensure that the battery pack can effectively dissipate heat.

Motor testing:

• Temperature dependence test: evaluate the performance of the motor under different temperature conditions, such as speed, torque, etc.
• Thermal cycle test: simulate the cycle changes of the motor under different temperature conditions to evaluate the thermal cycle performance of the motor.
• Thermal management system test: evaluate the performance of the thermal management system of the motor under different temperature conditions to ensure that the motor can effectively dissipate heat.

Power electronic equipment test:

• Inverter and frequency converter test: evaluate the performance of power electronic equipment under different temperature conditions, such as conversion efficiency, reliability, etc.
• Thermal cycle test: simulate the cycle changes of power electronic equipment under different temperature conditions to evaluate the thermal cycle performance of the equipment.
• Thermal management system test: evaluate the performance of the thermal management system of power electronic equipment under different temperature conditions to ensure that the equipment can effectively dissipate heat.

Energy storage system test:

• Battery energy storage system test: evaluate the performance of the battery energy storage system under different temperature conditions, such as charging and discharging capacity, energy density, etc.
• Thermal management system test: evaluate the performance of the thermal management system of the energy storage system under different temperature conditions to ensure that the energy storage system can effectively dissipate heat.

Fuel cell test:

• Thermal cycle test: simulate the cycle changes of fuel cells under different temperature conditions to evaluate the thermal cycle performance of fuel cells.
• Thermal management system test: evaluate the performance of the thermal management system of fuel cells under different temperature conditions to ensure that the fuel cells can effectively dissipate heat.

Electric vehicle component testing:

• Electric vehicle motor controller testing: Evaluate the performance of the motor controller under different temperature conditions.
• Battery management system (BMS) testing: Evaluate the performance of the battery management system under different temperature conditions.
• Thermal management system testing: Evaluate the performance of the electric vehicle thermal management system under different temperature conditions.

Environmental simulation testing:

• Temperature cycle testing: Simulate the cyclic changes of the product under different temperature conditions to evaluate the thermal cycle performance of the product.
• Thermal shock testing: Simulate the situation where the product experiences a sharp change in temperature in a short period of time to evaluate the thermal stability of the product.
• High and low temperature testing: Simulate the performance of the product under extreme temperature conditions to evaluate the performance of the product.

Summary Cooling water chillers play a key role in the testing of new energy companies, ensuring the performance, reliability and safety of the products by providing precise temperature control. These tests help optimize product design, improve product quality, and ensure that the products can perform well under actual use conditions.

LNEYA’s KRY series water chillers can remotely monitor test data to ensure that the system’s operating data can be obtained remotely. Data records include temperature, pressure, flow, etc. It comes with an emergency stop button, which can quickly and safely stop operation in an emergency. It can also be used for cooling inverters in photovoltaic power stations, etc.

I test sui veicoli a energia nuova richiedono un refrigeratore o un riscaldatore?

I test sui motori dei veicoli a energia nuova richiedono sia un refrigeratore che un riscaldatore, poiché i test sui motori coprono un'ampia gamma di condizioni di temperatura per garantire le prestazioni e la stabilità del motore in diverse condizioni operative.

Refrigeratore: In caso di funzionamento ad alto carico del motore o di temperatura ambiente elevata, il motore e il suo controllore generano una grande quantità di calore. Il refrigeratore assorbe e sottrae questo calore facendo circolare il refrigerante, contribuendo a mantenere la temperatura del motore entro un intervallo controllabile ed evitando il degrado delle prestazioni o i danni causati dal surriscaldamento. Il refrigeratore assicura la gestione della temperatura durante il processo di collaudo, in particolare durante i test a pieno carico, di efficienza o di durata, per simulare le esigenze di raffreddamento del motore nell'uso reale.

Riscaldatore: In ambienti a bassa temperatura o quando è richiesto un test di avviamento a freddo, il motore può incontrare difficoltà di avviamento o limitazioni delle prestazioni. A questo punto, il riscaldatore diventa particolarmente importante perché può riscaldare rapidamente il refrigerante o testare l'ambiente, simulare lo stato di funzionamento in un ambiente a bassa temperatura, testare le prestazioni di avviamento a bassa temperatura, le prestazioni di riscaldamento a bassa temperatura del motore e l'efficienza di lavoro in climi freddi.

Per questo motivo, i test sui motori dei veicoli a energia nuova sono solitamente dotati di una macchina integrata fredda e calda o separatamente di un refrigeratore e di un riscaldatore per ottenere un controllo completo della temperatura del motore, soddisfare i requisiti di test in vari intervalli, dalle basse alle alte temperature, e garantire che il motore possa funzionare in modo stabile e affidabile nell'intero intervallo di temperatura. In questo modo è possibile non solo verificare la capacità di dissipazione del calore del motore in condizioni di alta temperatura, ma anche testarne le prestazioni di avviamento e funzionamento in condizioni di bassa temperatura.

This type of all-in-one machine can achieve a wide temperature range switching within a single device, allowing for comprehensive environmental adaptability testing without the need for device replacement. Its main features and uses include:

1.Wide temperature range coverage: High and low temperature all-in-one machines usually provide a wide temperature adjustment range, such as -40 ℃ to+80 ℃ (or even wider), to meet the performance evaluation needs of automotive batteries under various extreme weather conditions.

2.Rapid temperature change: With the ability to quickly increase and decrease temperature, it can reach the set temperature in a short time, improve testing efficiency, and is especially suitable for scenarios that require temperature cycling (such as thermal shock testing).

3.Accurate temperature control: Equipped with a high-precision temperature control system, it can accurately control and maintain the temperature stability inside the test box, ensuring the accuracy and consistency of test results.

4.Safety protection: Equipped with multiple safety protection measures, such as over temperature protection, over current protection, short circuit protection, etc., to ensure the safety of equipment and personnel during battery testing.

5.Automated testing: It can be combined with automated testing software to achieve automatic execution of testing programs, automatic data collection and analysis, simplify testing processes, and improve testing efficiency.

6.Compatible with multiple testing standards: capable of conducting high and low temperature performance tests on automotive batteries in accordance with relevant international or domestic standards (such as SAE, IEC, GB, etc.),

1. Evaluate low-temperature starting performance: In cold climates, the battery must be able to provide sufficient electrical energy to start the vehicle engine. The test box simulates an extremely cold environment to verify the cold starting current (CCA) and cold starting ability of the battery at low temperatures.
2. Measure capacity decay: Low temperature can affect the chemical reaction rate of the battery, leading to a decrease in battery capacity. By conducting charge and discharge tests in low-temperature environments, the actual available capacity of the battery under low-temperature conditions can be quantified, and its endurance in cold weather can be evaluated.
3. Check the charging acceptance characteristics: At low temperatures, the charging efficiency of the battery may decrease, and there may be a problem of decreased charging acceptance ability. The test box can simulate low-temperature charging conditions, check whether the battery can charge normally, and evaluate its charging time, charging efficiency, and safety.
4. Evaluate cold resistance and lifespan: Long term exposure to low temperatures may accelerate battery aging or cause internal failures. The test box can simulate long-term low-temperature storage or usage conditions, evaluate the durability and expected lifespan of batteries at low temperatures.
5. Detection of safety characteristics: Low temperatures may trigger certain internal failure modes of the battery, such as increased risk of thermal runaway.The test chamber can be used for abuse testing under low temperature conditions (such as overcharging, short circuit, etc.) to verify the effectiveness of the battery’s safety protection mechanism.

The application scenarios of the high and low temperature integrated machine for automotive battery testing boxes are wide, which is suitable for performance verification of new products in the battery development stage, as well as quality control and factory inspection in the production stage, as well as fault diagnosis and analysis in the after-sales market. Through the testing of such devices, key data support can be provided for the performance optimization, reliability improvement, and market access of automotive batteries.

The battery thermal management system mainly includes high-temperature cooling and low-temperature heating functions. The high-temperature cooling methods of thermal management mainly include air cooling, liquid cooling, phase change material cooling, and heat pipe cooling; the low-temperature heating methods of thermal management mainly include battery internal heating method and battery external heating method. The high-temperature cooling method of the thermal management system of a pure electric car adopts air cooling. The rear seat battery pack arranged under the rear seat of the vehicle is designed with a vent at the front end and communicates with the passenger compartment. Two metal air ducts are installed in the middle of the front and rear battery packs. The exhaust fan assembly at the rear of the trunk extracts the air-conditioning air in the passenger compartment to cool the battery pack. When the ambient temperature is too low, a heater is installed inside the front battery pack, and the fan on the upper part of the heater and the fan in the trunk are used to perform forced convection on the heater to achieve the purpose of heating.

The ambient temperature of the high-temperature cooling of the battery pack is 40°C, the temperature at the air inlet of the front battery pack is 19°C, and the battery pack is discharged at 1C. The low-temperature heating environment temperature is -10 ℃, the battery pack is heated by the heater of the front battery pack, and the heater is started by the external power supply through DC/DC, and the battery pack is in a non-discharging state during this process.

1. High temperature cooling steady state analysis of battery pack
   The temperature distribution trend of the battery pack can be found by using the steady-state analysis results of the battery pack, which plays an important role in the design and improvement of the battery pack.

2.Transient analysis of battery pack high temperature cooling
The battery pack steady-state analysis can find the battery pack temperature distribution trend. The battery pack capacity of electric vehicles is limited, so the transient analysis of the battery pack is close to the actual situation and the rationality of the simulation analysis can be verified by experiments.

3. Steady-state analysis of battery pack heating at low temperature
Charging the battery under low ambient temperature will not only damage the battery but also bring safety hazards. Therefore, it is necessary to heat the minimum temperature of the battery pack to a reasonable working temperature area before charging the battery.

4. Transient analysis results of battery pack low temperature heating
Heating the battery pack with a heater.

Forniamo consulenze gratuite e soluzioni complete 7*24

Forniamo consulenze gratuite e soluzioni complete 7*24

1.Understand the characteristics of the DC charging pile cooling system

Before installing a DC charging pile cooling system, you need to understand the characteristics of the equipment. This includes things like the device’s size, weight, operating temperature range, and power requirements. Ensure that the equipment has sufficient space and power required for its operation at the installation site, and ensure that the operating temperature range of the equipment meets actual requirements.

2.Dealing with common problems of DC charging pile cooling system

During the installation and use of the DC charging pile cooling system, you may encounter some common problems. Here are solutions to common problems:

• Insufficient cooling/heating effect: This may be caused by scaling inside the equipment, blocked pipes, or insufficient refrigerant. Maintenance and maintenance should be carried out regularly, including cleaning internal scale, replacing filters, adding refrigerant and other measures.
• Equipment abnormality: If the equipment has abnormal sound, vibration or odor, it should be shut down immediately for inspection. It may be caused by damaged internal parts of the equipment, broken pipes, or other reasons. The manufacturer or maintenance personnel should be contacted in time for maintenance.
• Electrical failure: If the equipment cannot start normally or other electrical failures occur, you should check whether the power connection is normal and whether the wires are damaged or loose. If you cannot solve it yourself, you should seek help from an electrician.
• Waterway system problems: If the equipment has problems such as water leakage, insufficient water volume, or abnormal water temperature, you should check whether the waterway system is well sealed and whether the accessories are damaged. If you cannot solve it by yourself, you should contact the manufacturer or maintenance personnel for repair.

As a device that can provide both high and low temperature environments, the correct installation and use of the DC charging pile cooling system is crucial to giving full play to its performance. This article will discuss the points to note during the installation of the DC charging pile cooling system.

It is suitable for the new generation of energy-based battery packs, which can effectively test the environmental adaptability of the battery packs, improve the safety and reliability of the vehicle, and ensure the good operation of the vehicle in various complex environments.