Battery test liquid cooling mechanism

Abstract

The utility model belongs to battery test technical field discloses a kind of battery test liquid cooling mechanism.The battery test liquid cooling mechanism is used for the battery to test temperature when liquid cooling test, including liquid cooling part and top cover;Open upward containing cavity is equipped in liquid cooling part, containing cavity is used for flowing cooling liquid, battery can be inserted in containing cavity along Z axis downward by opening and at least partially immerged in cooling liquid, the pole lug of battery is placed outside containing cavity upward;Top cover is covered in the top of liquid cooling part to encapsulate battery.The battery test liquid cooling mechanism can guarantee the liquid cooling operation of battery convenient time-saving, high working efficiency, and will not damage battery, can guarantee the heat dissipation effect to battery simultaneously, so that battery is always in test temperature range, to obtain the accurate performance test result of battery.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery testing liquid cooling mechanism. Background Technology

[0002] To verify battery performance, performance tests (such as charge-discharge tests) need to be performed on the battery before it leaves the factory. During the test, the battery is first placed in a temperature chamber to provide the required test temperature. However, since the battery generates a lot of heat during the test, this heat will cause the temperature-sensitive battery to rise, resulting in the actual temperature of the battery exceeding the test temperature provided by the temperature chamber. If the battery is tested at this actual temperature, it will affect the battery performance, leading to deviations in the performance test results and making it impossible to obtain accurate performance test results.

[0003] Currently, when performing performance tests on batteries, a water-cooled plate of the appropriate size can be installed on the side of the battery (large side and / or small side) so that the cooling water inside the water-cooled plate can carry away the heat generated by the battery during the test, ensuring that the battery is always within the test temperature range.

[0004] However, the above-mentioned water-cooled plate cooling method is prone to the following two problems: 1) It is easily restricted by the installation conditions, making it impossible to install the water-cooled plate on the side of the battery smoothly, and the battery is easily damaged during the installation process. At the same time, the installation operation is cumbersome and time-consuming, resulting in low work efficiency; 2) The water-cooled plate cannot effectively remove the heat generated during battery testing, resulting in poor heat dissipation effect on the battery. Utility Model Content

[0005] The purpose of this invention is to provide a battery testing liquid cooling mechanism that provides convenient and time-saving liquid cooling operation for batteries, high working efficiency, and no damage to the batteries. At the same time, it can ensure the heat dissipation effect of the batteries, so that the batteries are always within the test temperature range, thereby obtaining accurate performance test results for the batteries.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery testing liquid cooling mechanism, used to bring the battery to the test temperature during liquid cooling testing, includes:

[0008] A liquid cooling component has an upward-facing accommodating cavity for flowing coolant. The battery is inserted into the accommodating cavity through the opening along the Z-axis and is at least partially immersed in the coolant. The battery's tabs are positioned upward outside the accommodating cavity.

[0009] A top cover is disposed on the top of the liquid cooling component to encapsulate the battery.

[0010] Optionally, a seal is provided at the opening, the seal being placed between the opening and the battery to seal the coolant in the accommodating cavity.

[0011] Optionally, the inner wall of the accommodating cavity is provided with a heat insulation layer.

[0012] Alternatively, the liquid cooling component can be a one-piece hollow box.

[0013] Optionally, the liquid cooling component has an inlet connector and an outlet connector connected to two opposite first sides along the X-axis. Both the inlet connector and the outlet connector are connected to the accommodating cavity and are respectively connected to temperature and flow acquisition probes. The inlet connector is lower than the outlet connector in the Z-axis direction. The inlet connector is connected to the water chiller.

[0014] Optionally, the battery testing liquid cooling mechanism is provided in multiple ways, and in two adjacent battery testing liquid cooling mechanisms, one of the water outlet connectors is connected to the other water inlet connector to connect the various battery testing liquid cooling mechanisms in series.

[0015] Optionally, the top cover includes:

[0016] A cover plate is placed on top of the liquid cooling component and covers the battery and the opening;

[0017] Two snap-fit ​​side plates are respectively connected to opposite sides of the cover plate along the Y-axis direction, and the snap-fit ​​side plates are attached to the second side of the liquid cooling component.

[0018] Optionally, both the cover plate and the snap-fit ​​side plates are made of heat-insulating material, and the cover plate and the two snap-fit ​​side plates are integrally formed.

[0019] Optionally, the cover plate is provided with a pressure relief port, which is correspondingly set with the explosion-proof valve of the battery.

[0020] Optionally, an overcurrent switch is welded onto the electrode tab, the overcurrent switch being used for electrical connection with an external test line; the cover plate is provided with a clearance opening for the overcurrent switch to pass through.

[0021] The beneficial effects of this utility model are:

[0022] The battery testing liquid cooling mechanism of this utility model, before performing performance testing on the battery, first inserts the battery downwards along the Z-axis through an opening into the receiving cavity of the liquid cooling component, so that at least part of the battery is immersed in the coolant within the receiving cavity; then, a top cover is placed on top of the liquid cooling component to encapsulate the battery, so that the top cover and the liquid cooling component cooperate to seal the battery within the receiving cavity, thereby preventing heat exchange between the battery and the surrounding environment; during performance testing, the circulating coolant cools and dissipates heat from the battery immersed in it, allowing the coolant to carry away the heat generated by the battery during the performance testing process; compared with the prior art... The water-cooled plate cooling method offers the following advantages: 1) It allows for direct placement of the battery into the housing for liquid cooling without additional installation, effectively protecting the battery and providing convenient and time-saving operation, thus improving work efficiency; 2) By directly immersing the battery in the coolant, the heat generated by the battery can be rapidly conducted to the coolant through the outer surfaces (large and small sides) of the battery, eliminating additional thermal resistance and significantly improving heat dissipation efficiency. This ensures effective heat dissipation of the battery, keeping it within the test temperature range for accurate performance testing results. Furthermore, by placing the battery with the tabs facing upwards outside the housing, the risk of short circuits due to contact between the tabs and the coolant is avoided, ensuring high safety during liquid cooling.

[0023] Furthermore, since the battery is directly immersed in the coolant within the liquid cooling component, if thermal runaway occurs during testing, the component's structural frame can act as an explosion-proof enclosure, reducing the risk of injury to the surrounding temperature chamber and personnel. Simultaneously, the coolant can quickly dissipate a large amount of heat from the thermal runaway, rapidly cooling the battery and preventing the risk of explosion or fire, thus quickly controlling the further spread and escalation of the runaway. This ensures the safety of the battery during thermal runaway. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the battery testing liquid cooling mechanism (encapsulating a battery) provided in this embodiment of the utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the battery testing liquid cooling mechanism (with a battery inserted and the top cover removed) provided in this embodiment of the utility model. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the structure of the liquid cooling component provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 10. Battery; 101. Tab; 102. Explosion-proof valve; 20. Overcurrent protection plate; 201. First plate; 202. Second plate;

[0029] 1. Liquid cooling component; 11. Opening; 12. Receptacle; 13. First side; 14. Second side; 15. Inlet connector; 16. Outlet connector; 17. Temperature and flow rate acquisition probe;

[0030] 2. Top cover; 21. Cover plate; 211. Pressure relief port; 212. Clearance opening; 22. Fastening side plate. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] This embodiment provides a battery testing liquid cooling mechanism. This mechanism is used to cool the battery to the test temperature during liquid cooling testing. It ensures convenient and time-saving liquid cooling operation, high efficiency, and no damage to the battery. Simultaneously, it guarantees effective heat dissipation, keeping the battery within the test temperature range, thereby obtaining accurate battery performance test results. Furthermore, this battery testing liquid cooling mechanism effectively ensures the battery's liquid cooling safety and safety in the event of thermal runaway. In this embodiment, the battery can specifically be a single-cell rechargeable battery (aluminum-cased prismatic battery). The specific type of battery is not limited here, as long as it is a prismatic battery.

[0036] Specifically, such as Figures 1 to 3 As shown, the battery testing liquid cooling mechanism includes a liquid cooling component 1 and a top cover 2. The liquid cooling component 1 has an upward-facing accommodating cavity 12 for flowing coolant. The battery 10 can be inserted into the cavity 12 through the opening 11 along the Z-axis and is at least partially immersed in the coolant. The battery 10's tabs 101 face upwards outside the cavity 12. The top cover 2 is placed on top of the liquid cooling component 1 to encapsulate the battery 10. The coolant can be readily available and inexpensive cooling water. The Z-axis direction is parallel to the height direction of the battery 10.

[0037] Compared to existing technologies, the battery testing liquid cooling mechanism in this embodiment changes the specific cooling method of the battery 10 during the testing process. By setting up a liquid cooling component 1 and a top cover 2 that cooperate with each other, before the performance test of the battery 10, the battery 10 is first inserted downwards along the Z-axis through the opening 11 into the receiving cavity 12 of the liquid cooling component 1, so that at least a portion of the battery 10 is immersed in the coolant within the receiving cavity 12. Then, the top cover 2 is placed on top of the liquid cooling component 1 to encapsulate the battery 10, so that the top cover 2 and the liquid cooling component 1 cooperate to seal the battery 10 within the receiving cavity 12, thereby preventing heat exchange between the battery 10 and the surrounding environment. During the performance test, the circulating coolant cools and dissipates heat from the battery 10 immersed in it, allowing the coolant to... The heat generated by battery 10 during performance testing is carried away. Compared with the existing cooling method using a water-cooled plate, this method has the following advantages: 1) Battery 10 can be directly placed in the receiving cavity 12 for liquid cooling simply by insertion, without additional installation operations. This better protects battery 10, is convenient and time-saving, and improves work efficiency; 2) By directly immersing battery 10 in the coolant, the heat generated by battery 10 can be quickly conducted to the coolant through the outer surface (large and small sides) of battery 10, eliminating additional thermal resistance and greatly improving heat dissipation efficiency. This ensures the heat dissipation effect of battery 10 and keeps battery 10 within the test temperature range, enabling accurate performance test results. Furthermore, by placing the battery 10 with its tabs 101 facing upwards outside the receiving cavity 12, the risk of short circuits due to contact between the tabs 101 and the coolant can be avoided, ensuring high safety during liquid cooling of battery 10.

[0038] Furthermore, since the battery 10 is directly immersed in the coolant inside the liquid cooling component 1, if the battery 10 experiences thermal runaway during testing, the structural frame of the liquid cooling component 1 can act as an explosion-proof enclosure, reducing the risk of damage to the surrounding temperature chamber and personnel after the battery 10 experiences thermal runaway. At the same time, the coolant can quickly remove a large amount of heat from the thermal runaway, rapidly cooling the thermally runaway battery 10 and preventing the risk of the battery 10 exploding or catching fire, thus quickly controlling the further spread and aggravation of the thermal runaway; thereby ensuring the safety of the battery 10 during thermal runaway.

[0039] Furthermore, a sealing element is provided at the opening 11, which is placed between the opening 11 and the battery 10 to seal the gap between the opening 11 and the battery 10, thereby sealing the coolant in the receiving cavity 12 and preventing the coolant in the receiving cavity 12 from splashing out of the receiving cavity 12 through the gap. In this embodiment, the sealing element can specifically be a sealing ring or a sealing strip.

[0040] By setting a seal that can seal the coolant, on the one hand, the leakage and waste of coolant can be avoided, saving resources; on the other hand, the splashed coolant can be prevented from contacting the tab 101 and causing a short circuit risk, thereby better ensuring the liquid cooling safety of the battery 10.

[0041] Specifically, a heat insulation layer is provided on the inner wall of the accommodating cavity 12; more specifically, the inner wall of the accommodating cavity 12 can be filled with heat insulation material to form a heat insulation layer; alternatively, heat insulation material (heat insulation film) can be directly adhered to the surface of the inner wall of the accommodating cavity 12 to form a heat insulation layer. Here, the specific location and structure of the heat insulation layer are not limited.

[0042] By setting the above-mentioned heat insulation layer, on the one hand, the heat insulation effect of the heat insulation layer can further enhance the explosion-proof capability of the liquid cooling component 1, so that the liquid cooling component 1 can better play the role of an explosion-proof box when the battery 10 experiences thermal runaway, further reducing the damage to the surrounding temperature chamber and personnel after the battery 10 experiences thermal runaway; on the other hand, the heat insulation layer can better isolate the battery 10 from the surrounding environment, avoid heat exchange between the battery 10 and the surrounding environment, and ensure that the battery 10 is in a near-insulated and sealed containment cavity 12, thereby preventing the surrounding environment from affecting the temperature of the battery 10, and ensuring that the battery 10 is always within the test temperature range only through the battery testing liquid cooling mechanism.

[0043] Furthermore, such as Figure 3 As shown, the liquid cooling component 1 is a one-piece molded hollow box. This design ensures good structural strength, enabling it to function as an explosion-proof enclosure. Furthermore, it simplifies and streamlines the manufacturing process, reducing costs. Simultaneously, it guarantees good sealing and connection strength, ensuring the battery 10's sealing performance and structural stability within the accommodating cavity 12. The specific shape and dimensions of the hollow box are not limited here, as long as they match the shape and dimensions of the battery 10.

[0044] Specifically, such as Figures 1 to 3 As shown, the liquid cooling component 1 has two opposite first side surfaces 13 along the X-axis connected to an inlet connector 15 and an outlet connector 16, respectively. That is, an inlet and an outlet are respectively provided on the two first side surfaces 13, and the inlet connector 15 and outlet connector 16 are respectively connected to the inlet and outlet. Both the inlet connector 15 and outlet connector 16 are connected to the accommodating cavity 12 and are respectively connected to temperature and flow rate acquisition probes 17. The two temperature and flow rate acquisition probes 17 are used to collect and monitor the temperature and flow rate of the coolant at the inlet and outlet, respectively. The X-axis direction is parallel to the length direction of the battery 10. The structures of the inlet connector 15 and the outlet connector 16 are the same, and both can use connectors commonly found in the prior art.

[0045] It is worth noting that since the two temperature and flow rate acquisition probes 17 can collect the temperature and flow rate of the coolant at the inlet and outlet in real time, the specific heat dissipation of the battery 10 during the entire test process can be accurately calculated using the collected temperature and flow rate of the coolant at the inlet and outlet. Furthermore, in this embodiment, the battery 10 is placed within a nearly heat-insulated and sealed cavity 12, which eliminates the influence of the external environment and allows for a more accurate calculation of the heat generated (heat dissipation) of the battery 10 under various test conditions.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, the inlet connector 15 is lower than the outlet connector 16 in the Z-axis direction to form a direct flow pattern of low inlet and high outlet. On the one hand, this makes it easier and smoother for the coolant to enter and exit the accommodating cavity 12, and ensures that the coolant level in the accommodating cavity 12 is flush with the outlet. This makes it easier to set the outlet according to the specific immersion height required by the battery 10, so as to ensure that the immersion height of the battery 10 in the coolant is appropriate. On the other hand, the low inlet and high outlet of the coolant can ensure that the circulation flow in the accommodating cavity 12 is relatively stable and gentle, without violent shaking, thereby ensuring the uniformity of cooling of the battery 10 at all locations.

[0047] Specifically, the water inlet connector 15 is connected to a water chiller to continuously supply the required coolant to the accommodating cavity 12, ensuring the entire circulation process of the coolant. Furthermore, by supplying coolant to the accommodating cavity 12 through the water chiller, a certain temperature difference is maintained between the coolant and the battery 10. This allows the coolant at a lower temperature to directly and rapidly cool the battery 10 at a higher temperature, thereby further improving the cooling efficiency of the battery 10 and better ensuring that the battery 10 remains within the test temperature range. The water chiller can be a commonly used water chiller in existing technology.

[0048] Specifically, the coolant supplied by the water chiller flows into the accommodating cavity 12 through the inlet connector 15 and the inlet port. After the battery 10 is cooled by liquid cooling in the accommodating cavity 12, it flows out to the outside of the liquid cooling component 1 through the outlet port and the outlet connector 16, so as to realize the circulation of coolant and thus ensure the cooling effect of the circulating coolant on the battery 10.

[0049] Furthermore, multiple battery testing liquid cooling mechanisms are provided. In two adjacent battery testing liquid cooling mechanisms, one water outlet connector 16 is connected to the other water inlet connector 15 to connect the various battery testing liquid cooling mechanisms in series, so that the coolant supplied by the water chiller circulates sequentially within each accommodating cavity 12. Here, the specific number of battery testing liquid cooling mechanisms is not limited and needs to be determined according to the actual structural conditions and battery 10 testing requirements.

[0050] By setting up multiple battery testing liquid cooling mechanisms and placing each mechanism within the same temperature chamber, the chamber simultaneously provides the required testing temperature to the batteries 10 within each mechanism. This allows for simultaneous testing of multiple batteries 10, significantly improving testing efficiency. Furthermore, the series-connected liquid cooling mechanisms require only a single water chiller for overall circulating liquid cooling, greatly reducing production costs. The temperature chamber here only provides the necessary testing temperature for the batteries 10; therefore, commonly used temperature chambers in existing technology are sufficient.

[0051] Specifically, such as Figure 1 and Figure 2 As shown, the top cover 2 includes a cover plate 21 and two snap-fit ​​side plates 22. The cover plate 21 is placed on top of the liquid cooling component 1 and covers the battery 10 and the opening 11, that is, the cover plate 21 completely covers the battery 10 and the opening 11 to ensure that the cover plate 21 seals the battery 10 in the accommodating cavity 12. The two snap-fit ​​side plates 22 are respectively connected to opposite sides of the cover plate 21 along the Y-axis direction, and the snap-fit ​​side plates 22 are attached to the second side 14 of the liquid cooling component 1. On the one hand, the snap-fit ​​method makes the installation and removal of the top cover 2 and the liquid cooling component 1 simple and convenient; on the other hand, it ensures the stability of the connection between the top cover 2 and the liquid cooling component 1. The Y-axis direction is parallel to the thickness direction of the battery 10. Here, the shape and size of the cover plate 21 are not limited, as long as the cover plate 21 can completely cover the battery 10 and the opening 11.

[0052] Furthermore, both the cover plate 21 and the snap-fit ​​side plate 22 are made of heat-insulating materials. On the one hand, the heat insulation effect of the cover plate 21 and the snap-fit ​​side plate 22 enables the entire top cover 2 to have a certain explosion-proof capability. When the battery 10 experiences thermal runaway, the top cover 2 can play an explosion-proof role, better reducing the harm to the surrounding temperature chamber and personnel after the battery 10 experiences thermal runaway. On the other hand, the heat insulation effect of the cover plate 21 and the snap-fit ​​side plate 22 can better isolate the battery 10 from the surrounding environment, avoid heat exchange between the battery 10 and the surrounding environment, and ensure that the battery 10 is in a near-heat-insulated and sealed accommodating cavity 12.

[0053] Specifically, such as Figure 1As shown, the cover plate 21 and the two snap-fit ​​side plates 22 are integrally formed; on the one hand, it can ensure that the overall structural strength of the top cover 2 is good, so that the top cover 2 can play a certain role in explosion prevention; on the other hand, it can make the top cover 2 simple and convenient to process, and the processing cost is low; at the same time, it can ensure the sealing of the top cover 2, so as to better ensure the sealing effect of the battery 10 in the accommodating cavity 12.

[0054] Furthermore, such as Figure 1 and Figure 2 As shown, a pressure relief port 211 is provided on the cover plate 21. The pressure relief port 211 is correspondingly set with the explosion-proof valve 102 of the battery 10, so that the cover plate 21 does not interfere with the pressure relief of the battery 10 itself. When the battery 10 experiences thermal runaway, the pressure is directly and quickly relieved through the explosion-proof valve 102 and the pressure relief port 211, which further improves the safety of the battery 10 during thermal runaway.

[0055] Specifically, such as Figure 1 and Figure 2 As shown, when performance testing is required, a current-carrying bar 20 is first welded onto the tab 101. The current-carrying bar 20 is used for electrical connection with external test lines. A clearance opening 212 is provided on the cover plate 21 for the current-carrying bar 20 to pass through, so as to avoid mutual interference between the cover plate 21 and the current-carrying bar 20.

[0056] Furthermore, such as Figure 1 and Figure 2 As shown, the overcurrent transformer 20 includes a first piece 201 and a second piece 202 connected vertically to form an L-shaped overcurrent transformer 20. The first piece 201 is horizontally welded to the tab 101, and the cover plate 21 can completely cover the first piece 201. The second piece 202 passes through the clearance opening 212 on the cover plate 21 along the Z-axis to facilitate electrical connection with external test lines. The bottom side of the cover plate 21 facing the battery 10 has clearance grooves to avoid the tab 101 and the first piece 201, ensuring that the cover plate 21 can horizontally and completely and tightly cover the battery 10 and the opening 11. The first piece 201 and the second piece 202 are an integral structure, and the first piece 201 and the second piece 202 are common adapter plate structures in the prior art.

[0057] Based on the comprehensive description of the above structure, the battery testing liquid cooling mechanism in this embodiment can achieve the beneficial effects of high safety, good heat dissipation, and low cost:

[0058] High security:

[0059] The liquid cooling safety of the battery 10 is high: by placing the tab 101 facing upwards outside the receiving cavity 12 during the insertion of the battery 10 along the Z-axis direction, the tab 101 will not come into contact with the coolant; at the same time, by providing a seal at the gap between the opening 11 and the battery 10, the coolant in the receiving cavity 12 is prevented from splashing out of the receiving cavity 12 and coming into contact with the tab 101 through the gap; thus, the risk of short circuit due to contact between the coolant and the tab 101 can be avoided, ensuring the liquid cooling safety of the battery 10.

[0060] Safety of battery 10 during thermal runaway: On the one hand, by making the liquid cooling component 1 a one-piece hollow box and providing a heat insulation layer on the inner wall of the accommodating cavity 12, the explosion-proof capability of the liquid cooling component 1 can be improved; at the same time, the cover plate 21 and the two snap-fit ​​side plates 22 of the top cover 2 are a one-piece structure, and the materials of the cover plate 21 and the snap-fit ​​side plates 22 are both heat-insulating materials, so as to improve the explosion-proof capability of the top cover 2; when battery 10 experiences thermal runaway during testing, the entire battery testing liquid cooling mechanism can act as an explosion-proof box, reducing the harm to the surrounding temperature chamber and personnel after battery 10 thermal runaway, so as to ensure the safety of battery 10 during thermal runaway.

[0061] On the other hand, by setting the pressure relief port 211 on the cover plate 21 to correspond with the explosion-proof valve 102 of the battery 10, the pressure can be quickly relieved directly through the explosion-proof valve 102 and the pressure relief port 211 when the battery 10 experiences thermal runaway. At the same time, the coolant can quickly remove a large amount of heat from the thermal runaway, avoiding the risk of the battery 10 exploding and catching fire, so as to quickly control the further spread and aggravation of thermal runaway, thereby ensuring the safety of the battery 10 during thermal runaway.

[0062] Good heat dissipation:

[0063] By directly immersing the battery 10 in the coolant, the heat generated by the battery 10 can be quickly conducted to the coolant through the outer surface of the battery 10, greatly improving the heat dissipation efficiency. At the same time, the temperature difference between the coolant supplied by the water chiller and the battery 10 can improve the cooling efficiency. Thus, a good heat dissipation effect on the battery 10 can be guaranteed.

[0064] Low cost:

[0065] The liquid cooling component 1 and top cover 2 are designed and manufactured according to the actual size of the battery 10, which makes the structure of the liquid cooling component 1 and top cover 2 simple, the volume appropriate, the area occupied small, and the production cost low. In addition, each series-connected battery test liquid cooling mechanism only needs one water chiller to realize the overall circulation of coolant, without the need for additional overcurrent and refrigeration supporting devices, which greatly improves the space utilization and reduces the investment cost of equipment (water chiller and overcurrent and refrigeration supporting devices).

[0066] The specific working process of the battery testing liquid cooling mechanism in this embodiment is as follows:

[0067] First, before the charge and discharge test, the battery 10 is inserted into the accommodating cavity 12 through the opening 11 along the Z-axis downward, and the liquid cooler 1 and the battery 10 are placed together in the temperature chamber.

[0068] Then, the cover plate 21 is placed horizontally on the top of the liquid cooling component 1 and completely covers the battery 10 and the opening 11. The second piece 202 of the overflow bar 20 passes through the clearance opening 212 on the cover plate 21 along the Z-axis. The two snap-fit ​​side plates 22 are respectively attached to the two second side surfaces 14 of the liquid cooling component 1 so that the top cover 2 is directly placed on the top of the liquid cooling component 1, ensuring that a near-thermal-insulating accommodating cavity 12 can be formed between the top cover 2 and the liquid cooling component 1.

[0069] Next, the two external test lines (power lines) of the charging and discharging cabinet are connected to the two second pieces 202 respectively to realize the electrical connection between the battery 10 and the charging and discharging cabinet. At this time, the battery test liquid cooling mechanism and the battery 10 are located in the temperature chamber. The temperature chamber provides the required test temperature to the battery 10 and starts the charging and discharging cabinet to perform charging and discharging tests on the battery 10.

[0070] Meanwhile, the coolant supplied by the water chiller flows into the accommodating cavity 12 through the inlet connector 15 and the inlet port in sequence. The temperature and flow rate of the coolant at the inlet and outlet are collected and monitored by two temperature and flow rate acquisition probes 17. The flow rate and velocity of the coolant at the inlet and outlet are adjusted so that the battery 10 is fully or partially submerged in the coolant according to specific needs. This allows the coolant to absorb and remove the heat generated by the battery 10 during the charge and discharge test, ensuring that the battery 10 is always within the test temperature range for the charge and discharge test. Finally, the coolant flows out of the liquid cooling component 1 through the outlet and the outlet connector 16 in sequence, so as to achieve the cooling effect of the circulating coolant on the battery 10.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery testing liquid cooling mechanism for bringing the battery (10) to the test temperature during liquid cooling testing, characterized in that, include: The liquid cooling component (1) has an upward-facing accommodating cavity (12) inside, which is used for flowing coolant. The battery (10) can be inserted into the accommodating cavity (12) along the Z-axis downward through the opening (11) and is at least partially immersed in the coolant. The tabs (101) of the battery (10) are placed outside the accommodating cavity (12) with their tabs (101) facing upward. Top cover (2), which is placed on the top of the liquid cooler (1) to encapsulate the battery (10).

2. The battery testing liquid cooling mechanism according to claim 1, characterized in that, A sealing element is provided at the opening (11), and the sealing element is placed between the opening (11) and the battery (10) to seal the coolant in the accommodating cavity (12).

3. The battery testing liquid cooling mechanism according to claim 1, characterized in that, The inner wall of the accommodating cavity (12) is provided with a heat insulation layer.

4. The battery testing liquid cooling mechanism according to claim 1, characterized in that, The liquid cooling component (1) is a one-piece hollow box.

5. The battery testing liquid cooling mechanism according to claim 1, characterized in that, The liquid cooling component (1) has two opposite first sides (13) connected to a water inlet connector (15) and a water outlet connector (16) respectively along the X-axis direction. Both the water inlet connector (15) and the water outlet connector (16) are connected to the accommodating cavity (12) and are respectively connected to a temperature and flow rate acquisition probe (17). The water inlet connector (15) is lower than the water outlet connector (16) in the Z-axis direction. The water inlet connector (15) is connected to the water chiller.

6. The battery testing liquid cooling mechanism according to claim 5, characterized in that, The battery testing liquid cooling mechanism is provided in multiple ways. In two adjacent battery testing liquid cooling mechanisms, one of the water outlet connectors (16) is connected to the other water inlet connector (15) to connect the various battery testing liquid cooling mechanisms in series.

7. The battery testing liquid cooling mechanism according to any one of claims 1-6, characterized in that, The top cover (2) includes: A cover plate (21) is placed on top of the liquid cooling component (1) and covers the battery (10) and the opening (11). Two snap-fit ​​side plates (22) are respectively connected to the opposite sides of the cover plate (21) along the Y-axis direction, and the snap-fit ​​side plates (22) are attached to the second side (14) of the liquid cooling component (1).

8. The battery testing liquid cooling mechanism according to claim 7, characterized in that, The material of the cover plate (21) and the material of the snap-fit ​​side plate (22) are both heat-insulating materials, and the cover plate (21) and the two snap-fit ​​side plates (22) are integrally formed structures.

9. The battery testing liquid cooling mechanism according to claim 7, characterized in that, The cover plate (21) is provided with a pressure relief port (211), and the pressure relief port (211) is correspondingly provided with the explosion-proof valve (102) of the battery (10).

10. The battery testing liquid cooling mechanism according to claim 7, characterized in that, The electrode tab (101) is welded with an overflow bar (20), which is used to electrically connect to an external test line; the cover plate (21) is provided with a clearance opening (212) for passing through the overflow bar (20).

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