Battery thermal management testing device

Abstract

The utility model relates to the technical field of battery testing, and discloses a battery thermal management testing device which comprises a main case, a liquid cooling groove, an air cooling structure, a data collector and a charging and discharging module, a partition plate, a testing cavity and an equipment cavity are arranged in the main case, the partition plate is arranged between the testing cavity and the equipment cavity, and a ventilation opening is formed in the partition plate; the liquid cooling tank is mounted in the test cavity and used for accommodating a battery, an opening is formed in the upper part of the liquid cooling tank, and the opening is communicated with the test cavity in the height direction; the air cooling structure is mounted in the equipment cavity, is communicated with the ventilation opening and is used for blowing airflow into the test cavity; the data collector is arranged in the test cavity, and a first temperature sensor is installed in the liquid cooling tank and used for detecting the temperature of the heat exchange liquid; the data acquisition unit and the first temperature sensor are electrically connected with an acquisition line; and the charging and discharging module is arranged in the test cavity, is connected with a power line and is electrically connected with the battery. The combination form of the liquid cooling tank and the air cooling structure can ensure the temperature uniformity of the test environment.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery thermal management testing device. Background Technology

[0002] Currently, thermal management testing is an important test for verifying battery safety. During the test, an external circulating cooling medium is used to remove the heat generated by the battery during operation, so as to ensure that the battery operates within a suitable temperature range.

[0003] Typically, battery thermal management testing employs a cold plate contact cooling method. The cold plate makes surface contact with the test battery, only dissipating heat from one side of the battery. However, this results in uneven temperature distribution across the entire battery, easily leading to localized high temperatures and making it difficult to simulate uniform ambient temperature conditions. Furthermore, while circulating air cooling can be used, exchanging heat through flowing gas contact with the battery, the temperature fluctuations of the circulating gas are significant, making it impossible to accurately control the battery's operating temperature.

[0004] In summary, existing heat dissipation methods such as cold plates and circulating air cooling have low heat dissipation efficiency for batteries during the test, making it difficult to ensure temperature uniformity in the test environment and failing to achieve the goal of accurately controlling the battery operating temperature. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing heat dissipation methods of cold plate and circulating air cooling have low heat dissipation efficiency for batteries during the test, making it difficult to ensure the temperature uniformity of the test environment and failing to achieve the goal of accurately controlling the battery operating temperature.

[0006] To solve the above-mentioned technical problems, this utility model provides a technical solution for a battery thermal management testing device:

[0007] A battery thermal management testing device, having intersecting length, width, and height directions, includes:

[0008] The main unit housing has a partition, a test chamber, and an equipment chamber inside. The partition is located between the test chamber and the equipment chamber, and the partition has ventilation openings.

[0009] A liquid cooling tank is installed inside the test chamber and is used to house the battery. The upper part of the liquid cooling tank has an opening that communicates with the test chamber along the height direction.

[0010] An air-cooled structure is installed inside the equipment cavity and is connected to the ventilation port for blowing airflow into the test cavity;

[0011] A data acquisition device is disposed inside the test chamber. A first temperature sensor is installed inside the liquid cooling tank. The first temperature sensor is used to detect the temperature of the heat exchange fluid. The data acquisition device is electrically connected to the first temperature sensor by a data acquisition line.

[0012] A charge / discharge module is disposed inside the test chamber and is connected to a power cord for electrical connection with the battery.

[0013] Furthermore, the liquid cooling tank has a first interface and a second interface, and a circulation pipeline is connected between the first interface and the second interface. A circulation pump is installed on the circulation pipeline, and both the circulation pipeline and the circulation pump are located outside the liquid cooling tank.

[0014] Furthermore, the liquid cooling tank includes a first sidewall and a second sidewall, the first sidewall and the second sidewall being spaced apart along the length direction, the first interface being disposed on the first sidewall, and the second interface being disposed on the second sidewall.

[0015] Furthermore, the orthographic projections of the first interface and the second interface along the length direction are arranged at intervals in both the width direction and the height direction.

[0016] Furthermore, it also includes a controller, which is electrically connected to the air-cooled structure, the data acquisition unit, and the circulating pump.

[0017] Furthermore, a second temperature sensor is also provided in the liquid cooling tank. The second temperature sensor is used to detect the surface temperature of the battery, and the acquisition line is electrically connected to the second temperature sensor.

[0018] Furthermore, a third temperature sensor is also provided inside the test chamber. The third temperature sensor is arranged at an interval from the liquid cooling tank. The third temperature sensor is used to detect the temperature of the test chamber, and the acquisition line is electrically connected to the third temperature sensor.

[0019] Furthermore, the interior of the main housing is also provided with a perforated plate, which is fixedly connected to the partition plate, and the perforated plate is located on the side of the test chamber closer to the equipment cavity in the height direction;

[0020] The perforated plate is supported and cooperates with the liquid cooling tank. The perforated plate has a vent hole that runs through the height direction and connects the test chamber and the equipment chamber.

[0021] Furthermore, a support plate is fixed to the upper side of the liquid cooling tank, the support plate is mounted at the opening, and the acquisition line and the power line are both connected to the support plate.

[0022] Furthermore, the air-cooled structure includes a compressor, a condenser, an expansion valve, an evaporator, and a refrigerant circuit. The compressor, the condenser, the expansion valve, and the evaporator are sequentially installed on the refrigerant circuit, and the evaporator is connected to the vent.

[0023] Compared with existing technologies, the battery thermal management testing device of this utility model has the following advantages: The device adopts a design consisting of a main housing, a liquid cooling tank, an air-cooled structure, a data acquisition unit, and a charge / discharge module. The main housing contains a partition, a test chamber, and an equipment chamber. The partition separates the test chamber and the equipment chamber to prevent the equipment's operation from affecting the test environment of the test chamber. The liquid cooling tank is installed inside the test chamber, with an opening at its upper part that connects to the test chamber along its height. During testing, the battery can be placed in the liquid cooling tank, where the heat exchange liquid is in immersion contact with the battery. This allows for effective heat absorption or release to different parts of the battery, ensuring a uniform temperature distribution throughout the entire battery.

[0024] The air-cooled structure is installed inside the equipment cavity and is connected to the ventilation port. According to the actual test requirements, the air-cooled structure generates cold or hot air, which is blown into the test cavity through the ventilation port. The cold or hot air exchanges heat with the heat exchange liquid in the liquid cooling tank, cooling or heating the heat exchange liquid to the set temperature range. At the same time, the heat exchange liquid efficiently absorbs heat from the battery or heats the battery, thereby creating a stable test environment and ensuring that the battery's operating performance under the optimal ambient temperature can be accurately tested.

[0025] In addition, the data acquisition unit and the charge / discharge module are both located inside the test chamber. A first temperature sensor is installed inside the liquid-cooled tank, and the data acquisition unit is electrically connected to the first temperature sensor via a data acquisition line. The charge / discharge module is connected to a power line for electrical connection with the battery. The charge / discharge module performs charge or discharge tests on the battery to simulate the charge / discharge conditions of the battery in actual use. Simultaneously, the first temperature sensor monitors the temperature of the heat exchange fluid in real time, and the data acquisition unit receives and records the first temperature signal to ensure that the battery in the liquid-cooled tank maintains its optimal operating temperature. The combination of a liquid-cooled tank and an air-cooled structure provides high heat dissipation efficiency for the battery during the test, ensuring temperature uniformity in the test environment and achieving accurate control of the battery's operating temperature. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the battery thermal management testing device in an embodiment of this utility model;

[0027] Figure 2 This is a front view schematic diagram of the battery thermal management testing device in an embodiment of this utility model;

[0028] Figure 3This is an internal top view of the battery thermal management testing device in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the test principle of the battery thermal management test device in this embodiment of the present invention;

[0030] In the diagram: 1-Main casing, 10-Baffle plate, 11-Test chamber, 12-Equipment chamber, 13-Ventilation port, 14-Perforated plate, 15-Ventilation hole, 2-Liquid cooling tank, 20-Opening, 21-First interface, 22-Second interface, 23-Circulation pipeline, 24-Circulation pump, 25-First side wall, 26-Second side wall, 27-Support plate, 3-Air-cooled structure, 31-Compressor, 32-Condenser, 33-Expansion valve, 34-Evaporator, 35-Refrigerant circuit, 4-Data acquisition unit, 40-Acquisition line, 5-Charge / discharge module, 50-Power cord, 6-Battery, 61-First temperature sensor, 62-Second temperature sensor, 63-Third temperature sensor, 7-Controller, X-Length direction, Y-Width direction, Z-Height direction. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] like Figures 1 to 4 As shown, a battery thermal management testing device according to an embodiment of the present invention has intersecting length direction X, width direction Y, and height direction Z, and includes: a main housing 1, a liquid cooling tank 2, an air cooling structure 3, a data acquisition unit 4, and a charge / discharge module 5. The main housing 1 is provided with a partition 10, a test chamber 11, and an equipment chamber 12 inside. The partition 10 is located between the test chamber 11 and the equipment chamber 12, and the partition 10 has a ventilation opening 13. The liquid cooling tank 2 is installed in the test chamber 11 and is used to accommodate the battery 6. The upper part of the liquid cooling tank 2 is provided with an opening 20, which communicates with the test chamber 11 along the height direction Z.

[0036] The air-cooled structure 3 is installed inside the equipment cavity 12 and is connected to the vent 13 for blowing air into the test cavity 11; the data acquisition unit 4 is installed inside the test cavity 11, and the first temperature sensor 61 is installed inside the liquid cooling tank 2 for detecting the temperature of the heat exchange liquid; the data acquisition unit 4 is electrically connected to the first temperature sensor 61 by a data acquisition line 40; the charge-discharge module 5 is installed inside the test cavity 11 and is connected to a power line 50 for electrically connecting to the battery 6.

[0037] This battery thermal management testing device adopts a design consisting of a main housing 1, a liquid cooling tank 2, an air-cooled structure 3, a data acquisition unit 4, and a charge / discharge module 5. The main housing 1 contains a partition 10, a test chamber 11, and an equipment chamber 12. The partition 10 separates the test chamber 11 and the equipment chamber 12 to prevent the equipment's operation from affecting the testing environment of the test chamber 11. The liquid cooling tank 2 is installed inside the test chamber 11. An opening 20 is located at the top of the liquid cooling tank 2, which connects to the test chamber 11 along the height direction Z. During testing, the battery 6 can be placed in the liquid cooling tank 2. The heat exchange liquid in the liquid cooling tank 2 is in immersion contact with the battery 6, effectively absorbing or releasing heat to different parts of the battery 6, thus ensuring a uniform temperature distribution throughout the battery 6.

[0038] The air-cooled structure 3 is installed inside the equipment cavity 12 and is connected to the ventilation port 13. According to the actual test requirements, the air-cooled structure 3 is controlled to generate cold or hot air, which is blown into the test cavity 11 through the ventilation port 13. The cold or hot air exchanges heat with the heat exchange liquid in the liquid cooling tank 2, so that the heat exchange liquid is cooled or heated to the set temperature range. At the same time, the heat exchange liquid efficiently absorbs heat from the battery 6 or heats the battery 6, thereby creating a stable test environment and ensuring that the operating performance of the battery 6 under the optimal ambient temperature can be accurately tested.

[0039] In addition, the data acquisition unit 4 and the charge / discharge module 5 are both located inside the test chamber 11. A first temperature sensor 61 is installed inside the liquid cooling tank 2, and the data acquisition unit 4 is electrically connected to the first temperature sensor 61 via a data acquisition line 40. The charge / discharge module 5 is connected to a power line 50, which is used to electrically connect to the battery 6. The charge / discharge module 5 performs charging or discharging tests on the battery 6 to simulate the charging and discharging conditions of the battery 6 in actual use. At the same time, the first temperature sensor 61 detects the temperature of the heat exchange fluid in real time, and the data acquisition unit 4 receives the first temperature signal and records the data to ensure that the battery 6 in the liquid cooling tank 2 maintains the optimal operating temperature. The combination of the liquid cooling tank 2 and the air-cooled structure 3 provides high heat dissipation efficiency for the battery 6 during the test, ensuring the temperature uniformity of the test environment and achieving the goal of accurately controlling the battery's operating temperature.

[0040] In this embodiment, the liquid cooling tank 2 has a first interface 21 and a second interface 22. A circulation pipe 23 connects the first interface 21 and the second interface 22, and a circulation pump 24 is installed on the circulation pipe 23. Both the circulation pipe 23 and the circulation pump 24 are located outside the liquid cooling tank 2. When the circulation pump 24 is turned on, the heat exchange liquid circulates in the liquid cooling tank 2 and the circulation pipe 23, preventing local heat accumulation in the liquid cooling tank 2 and ensuring the uniformity of the temperature distribution of the heat exchange liquid.

[0041] As a further preferred embodiment, the liquid cooling tank 2 includes a first sidewall 25 and a second sidewall 26, which are spaced apart along the length direction X. A first interface 21 is disposed on the first sidewall 25, and a second interface 22 is disposed on the second sidewall 26. Furthermore, the orthographic projections of the first interface 21 and the second interface 22 along the length direction X are also spaced apart in the width direction Y and the height direction Z. That is, the first interface 21 and the second interface 22 are spaced apart in the length direction X, the width direction Y, and the height direction Z, which ensures that the two interfaces are staggered in any spatial direction, ensuring that the heat exchange liquid in the liquid cooling tank 2 flows comprehensively, thereby improving temperature uniformity.

[0042] In this embodiment, the battery thermal management testing device also includes a controller 7, which is electrically connected to the air-cooled structure 3, the data acquisition unit 4, and the circulating pump 24. The controller 7 accurately measures the cooling and heating power of the air-cooled structure 3 and the flow rate of the circulating pump 24 to ensure that the heat exchange fluid in the liquid-cooled tank 2 is stably maintained at the optimal operating temperature required by the battery 7. It should be noted that silicone oil can be used as the heat exchange fluid, as it has good thermal conductivity and high heat exchange efficiency.

[0043] A second temperature sensor 62 is also installed inside the liquid cooling tank 2. The second temperature sensor 62 is used to detect the surface temperature of the battery 6, and the acquisition line 40 is electrically connected to the second temperature sensor 62. Furthermore, a third temperature sensor 63 is also installed inside the test chamber 11. The third temperature sensor 63 is arranged at intervals from the liquid cooling tank 2 and is used to detect the temperature of the test chamber 11. The acquisition line 40 is electrically connected to the third temperature sensor 63. The surface temperature of the battery 6 is detected in real time by the second temperature sensor 62, and the ambient temperature of the test chamber 11 is detected in real time by the third temperature sensor 62. Both the second and third temperature signals are sent to the data acquisition unit 4 to comprehensively record the surface temperature of the battery 6 and the ambient temperature data of the test chamber 11.

[0044] The main housing 1 also includes an orifice plate 14, which is fixedly connected to the partition plate 10. The orifice plate 14 is located on the side of the test chamber 11 closest to the equipment chamber 12 in the height direction Z. The orifice plate 14 supports the liquid cooling tank 2 and has a vent 15 extending along the height direction Z, connecting the test chamber 11 and the equipment chamber 12. The orifice plate 14 provides a support platform for the liquid cooling tank 2, and the vent 15 acts as a return air inlet, allowing the gas blowing through the liquid cooling tank 2 to flow back to the equipment chamber 12, ensuring the circulation of the air-cooled gas and thus effectively regulating the ambient temperature.

[0045] In addition, a support plate 27 is fixed on the upper side of the liquid cooling tank 2. The support plate 27 is mounted at the opening 20. The data acquisition line 40 and the power supply line 50 are both connected to the support plate 27. The support plate 27 provides a mounting point for the data acquisition line 40 and the power supply line 50, ensuring the reliability of the wiring harness connection. Specifically, the air-cooled structure 3 includes a compressor 31, a condenser 32, an expansion valve 33, an evaporator 34, and a refrigerant circuit 35. The compressor 31, condenser 32, expansion valve 33, and evaporator 34 are sequentially installed on the refrigerant circuit 35. The evaporator 34 is connected to the vent 13. The evaporator 34 has higher cooling efficiency and can quickly generate a large amount of air-cooled gas, ensuring efficient heat dissipation for the battery 6.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery thermal management testing device, having intersecting length (X), width (Y), and height (Z) directions, characterized in that, include: The main unit housing (1) has a partition (10), a test chamber (11) and an equipment chamber (12) inside. The partition (10) is located between the test chamber (11) and the equipment chamber (12). The partition (10) has a ventilation opening (13). Liquid cooling tank (2), the liquid cooling tank (2) is installed in the test chamber (11), the liquid cooling tank (2) is used to hold the battery (6), the upper part of the liquid cooling tank (2) is provided with an opening (20), the opening (20) is connected to the test chamber (11) along the height direction (Z); Air-cooled structure (3), the air-cooled structure (3) is installed in the equipment cavity (12), and the air-cooled structure (3) is connected to the ventilation port (13) for blowing airflow into the test cavity (11); A data acquisition device (4) is installed in the test chamber (11). A first temperature sensor (61) is installed in the liquid cooling tank (2). The first temperature sensor (61) is used to detect the temperature of the heat exchange fluid. The data acquisition device (4) is electrically connected to the first temperature sensor (61) by a data acquisition line (40). A charge / discharge module (5) is disposed in the test chamber (11). The charge / discharge module (5) is connected to a power line (50), which is used to electrically connect to the battery (6).

2. The battery thermal management testing device according to claim 1, characterized in that, The liquid cooling tank (2) has a first interface (21) and a second interface (22). A circulation pipeline (23) is connected between the first interface (21) and the second interface (22). A circulation pump (24) is installed on the circulation pipeline (23). Both the circulation pipeline (23) and the circulation pump (24) are located outside the liquid cooling tank (2).

3. The battery thermal management testing device according to claim 2, characterized in that, The liquid cooling tank (2) includes a first sidewall (25) and a second sidewall (26). The first sidewall (25) and the second sidewall (26) are spaced apart along the length direction (X). The first interface (21) is disposed on the first sidewall (25) and the second interface (22) is disposed on the second sidewall (26).

4. The battery thermal management testing device according to claim 3, characterized in that, The first interface (21) and the second interface (22) are arranged at intervals along the length direction (X) and the width direction (Y) and the height direction (Z).

5. The battery thermal management testing device according to claim 2, characterized in that, It also includes a controller (7), which is electrically connected to the air-cooled structure (3), the data acquisition unit (4), and the circulating pump (24).

6. The battery thermal management testing device according to claim 1, characterized in that, The liquid cooling tank (2) is also equipped with a second temperature sensor (62), which is used to detect the surface temperature of the battery (6). The acquisition line (40) is electrically connected to the second temperature sensor (62).

7. The battery thermal management testing device according to claim 6, characterized in that, The test chamber (11) is also equipped with a third temperature sensor (63), which is arranged at intervals with the liquid cooling tank (2). The third temperature sensor (63) is used to detect the temperature of the test chamber (11), and the acquisition line (40) is electrically connected to the third temperature sensor (63).

8. The battery thermal management testing device according to claim 1, characterized in that, The main housing (1) is also provided with a perforated plate (14), which is fixedly connected to the partition (10), and the perforated plate (14) is located on the side of the test chamber (11) in the height direction (Z) closer to the equipment chamber (12); The perforated plate (14) is supported and cooperated with the liquid cooling tank (2). The perforated plate (14) has a vent hole (15) that runs through the height direction (Z). The vent hole (15) connects the test chamber (11) and the equipment chamber (12).

9. The battery thermal management testing device according to claim 1, characterized in that, A support plate (27) is fixed on the upper side of the liquid cooling tank (2). The support plate (27) is mounted on the opening (20). The acquisition line (40) and the power line (50) are both connected to the support plate (27).

10. The battery thermal management testing device according to claim 1, characterized in that, The air-cooled structure (3) includes a compressor (31), a condenser (32), an expansion valve (33), an evaporator (34), and a refrigerant circuit (35). The compressor (31), the condenser (32), the expansion valve (33), and the evaporator (34) are installed sequentially on the refrigerant circuit (35). The evaporator (34) is connected to the vent (13).

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