Test device for simulating indirect cooling of battery

Abstract

The utility model relates to the technical field of battery test, and discloses a test device for simulating indirect cooling of a battery, which comprises a main shell, a liquid cooling plate, a clamp, a liquid nitrogen spraying mechanism and an infrared camera element, and is characterized in that the main shell comprises a top cover and a side plate, and the top cover is provided with a pressure relief hole; the liquid cooling plate and the main shell are buckled in the third direction to define a containing cavity, and the liquid cooling plate comprises a cooling flow channel, a liquid inlet and a liquid outlet; the clamp is arranged in the containing cavity and comprises at least two clamping plates and a fixing piece connected with the clamping plates, and the at least two clamping plates are arranged at intervals to form a clamping space; the liquid nitrogen spraying mechanism comprises a moving support and a spraying head, the moving support is arranged in the containing cavity, the spraying head is installed on the moving support, and the moving support has moving freedom degrees in the first direction and the second direction; the infrared camera element is installed on the top cover and used for shooting a temperature image of the containing cavity, the infrared camera element is electrically connected with the liquid nitrogen spraying mechanism, and when the local temperature of the containing cavity exceeds a set value, the spraying head moves to the high-temperature position.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery test technical field especially relates to a kind of test device of simulation battery indirect cooling. BACKGROUND

[0002] With the popularity of electric vehicles, the battery pack as the core component of the vehicle, its design is closely related to vehicle safety. In actual working conditions, the battery will experience complex charging and discharging process and accompanied by a large amount of heat generation, how to effectively thermal management of battery pack becomes a key problem.

[0003] A battery cell thermal runaway experimental device is disclosed in Chinese Utility Model Patent No. CN221303531U, authorized on July 9, 2024, which specifically includes a lower box, an upper cover, and a test module. The upper cover is fastened to the lower box, forming a containing space inside the lower box. The test module is arranged in the containing space. The test module includes a clamping mechanism and a plurality of square shell battery cells. The clamping mechanism is used to clamp and fix the plurality of square shell battery cells to form a battery pack. The battery cell thermal runaway experimental device further includes a liquid cooling plate. The liquid cooling plate is clamped between adjacent square shell battery cells to cool the square shell battery cells. The liquid cooling plate is arranged between the lower box and the battery cell pair, as well as between the adjacent two battery cell pairs. A heat-conducting structure adhesive is provided between the liquid cooling plate and the battery cell pair.

[0004] The existing battery cell thermal runaway experimental device can fix battery cells of various signals and sizes through the clamping mechanism, and can verify whether the heat dissipation performance of the liquid cooling plate has the ability to suppress thermal runaway. However, when the battery cell experiences thermal runaway, the liquid cooling plate alone cannot quickly and effectively extinguish the fire and cool the thermal runaway battery cell, resulting in poor safety of the battery cell test. Utility model content

[0005] The technical problem to be solved by the utility model is that the existing test device cannot quickly and effectively extinguish the fire and cool the thermal runaway battery cell when the battery cell experiences thermal runaway, resulting in poor safety of the battery cell test.

[0006] To solve the above technical problems, the utility model provides a test device for simulating indirect cooling of battery:

[0007] The test device for simulating indirect cooling of battery has a first direction, a second direction, and a third direction, and includes:

[0008] A main housing includes a top cover and a side plate fixedly connected, and the main top cover is provided with a pressure relief hole;

[0009] A liquid cooling plate is fastened with the main housing in the third direction to form a containing cavity. The liquid cooling plate includes a cooling flow channel, an inlet, and an outlet communicating with the cooling flow channel.

[0010] A clamp is arranged in the accommodating cavity;

[0011] A liquid nitrogen spraying mechanism includes a moving support and a spraying head mounted on the moving support, the moving support is arranged in the accommodating cavity and has a moving freedom degree along the first direction and the second direction;

[0012] An infrared camera element is mounted on the top cover and electrically connected with the liquid nitrogen spraying mechanism, the infrared camera element is used to shoot a temperature image of the accommodating cavity, and when a local temperature exceeds a set value, the spraying head moves to a high temperature position.

[0013] Further, the moving support includes a first sliding groove and a guide rail, the first sliding groove extends along the second direction, two first sliding grooves are arranged in the inner walls of the two side plates opposite along the first direction; the guide rail extends along the first direction, and the ends of the guide rail are respectively guided and matched with the first sliding grooves.

[0014] Further, the moving support further includes a second sliding groove and a sliding seat, the second sliding groove is arranged on the guide rail and extends along the first direction, and the sliding seat is guided and matched with the second sliding groove, and the spraying head is mounted on the sliding seat.

[0015] Further, a first driver is arranged between the first sliding groove and the guide rail, and a second driver is arranged between the second sliding groove and the sliding seat.

[0016] Further, the top cover is provided with a first through hole and a second through hole, the first through hole is penetrated by a liquid nitrogen pipeline and connected with the spraying head, and the second through hole is penetrated by a collection line and electrically connected with the battery monomer.

[0017] Further, a backing plate is detachably mounted on the liquid cooling plate close to the main shell, a first protruding part is arranged on the side of the backing plate close to the main shell, the first protruding part is distributed around the edge of the backing plate, and the first protruding part is positioned and matched with the clamp.

[0018] Further, a second protruding part is arranged on the side of the backing plate away from the main shell, a groove is arranged in the liquid cooling plate, the groove is arranged in the cooling flow channel, and the second protruding part is matched with the groove.

[0019] Further, the clamping plates include two first clamping plates and two second clamping plates, the two first clamping plates are arranged in the second direction, the two second clamping plates are arranged in the first direction, the first clamping plate is provided with a connecting hole at the end in the first direction, and the second clamping plate penetrates through the connecting hole in the second direction and connects the two first clamping plates.

[0020] Further, the fixing member includes a first fastener and a second fastener, the first fastener is connected between the two first clamping plates, the second fastener is connected between the two second clamping plates, and the first fastener and the second fastener are electric screw rods.

[0021] Further, the clamp further includes a plurality of pressure sensors, the pressure sensors are arranged on the side of the first clamping plate close to the clamping space, on the side of the second clamping plate close to the clamping space, and the pressure sensors are used for detecting the clamping force of the clamp on the battery cell group.

[0022] Compared with the prior art, the test device for simulating indirect cooling of a battery has the beneficial effects that: the test device for simulating indirect cooling of a battery adopts the design form of a main shell, a liquid cooling plate, a clamp, a liquid nitrogen spraying mechanism and an infrared camera element, wherein the main shell includes a top cover and a side plate, the top cover is fixedly connected with the side plate, the liquid cooling plate is assembled with the main shell in a third direction and surrounds a containing cavity; during testing, the battery to be measured can be placed in the containing cavity, and the battery group can be limited in a closed space through the assembly of the main shell and the liquid cooling plate, so that the working environment of the battery group in the battery pack is simulated. Since the top cover is provided with a pressure relief hole, abnormal pressure can be released outward in time when the battery is in thermal runaway; the liquid cooling plate includes a cooling flow channel, an inlet and an outlet, and cooling liquid is introduced into the cooling flow channel, so that the battery group can be effectively indirectly cooled.

[0023] Further, the clamp is arranged in the containing cavity, the clamp includes at least two clamping plates and a fixing member connecting the at least two clamping plates, and the at least two clamping plates are arranged in a spaced manner and form a clamping space. During testing, a plurality of battery monomers are arranged into a battery group, and the battery group is placed in the clamping space, so that the battery group is clamped and fixed by the at least two clamping plates and the fixing member, the position of the battery group is kept stable during testing, and the battery monomers can reach the working state of bearing the clamping force.

[0024] In addition, the liquid nitrogen spraying mechanism comprises a moving support and a spraying head, the moving support is arranged in the accommodating cavity, and the spraying head is installed on the moving support; the infrared camera element is installed on the top cover, the infrared camera element is used for shooting a temperature image of the accommodating cavity, and the infrared camera element is electrically connected with the liquid nitrogen spraying mechanism. The temperature image of the accommodating cavity can be shot in real time by using the infrared camera element, the temperature distribution in the cavity is acquired in time, when it is detected that the local temperature of the accommodating cavity exceeds the set value, the liquid nitrogen spraying mechanism is automatically controlled to work.

[0025] Specifically, the spraying head is driven by the moving support to move along the first direction and the second direction flexibly, so that the spraying head can be accurately moved to the high-temperature position and implement liquid nitrogen cooling, the purpose of quickly extinguishing and cooling the high-temperature area of the battery pack is achieved, the response and processing capacity of the test device to the temperature abnormal condition and the safety of the battery cell test are improved, and the battery thermal management process is accurately simulated and researched. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is an explosion schematic view of the test device for simulating indirect cooling of batteries in the embodiment of the utility model;

[0027] Figure 2 is an assembly schematic view of the moving support and the main shell in the embodiment of the utility model;

[0028] Figure 3 is an assembly schematic view of the first sliding groove and the guide rail in the embodiment of the utility model;

[0029] Figure 4 is an assembly schematic view of the sliding seat and the second sliding groove in the embodiment of the utility model;

[0030] Figure 5 is a three-dimensional schematic view of the clamp in the embodiment of the utility model;

[0031] Figure 6 is a three-dimensional schematic view of the base plate in the embodiment of the utility model;

[0032] In the figure: 1-main shell, 10-housing cavity, 11-top cover, 111-first through hole, 112-second through hole, 12-side plate, 13-pressure relief hole, 14-infrared camera element, 2-liquid cooling plate, 20-cooling flow channel, 21-liquid inlet, 22-liquid outlet, 23-groove, 3-clamp, 30-clamping space, 31-clamping plate, 311-first clamping plate, 312-second clamping plate, 313-connection hole, 32-fixing piece, 321-first fastener, 322-second fastener, 33-pressure sensor, 4-liquid nitrogen spraying mechanism, 41-moving bracket, 410-first sliding groove, 411-rail, 412-second sliding groove, 413-sliding seat, 414-first driver, 415-second driver, 42-spraying head, 5-battery monomer, 6-packing plate, 61-first protruding part, 62-second protruding part, X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in the present application are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be direct connection, also can pass through intermediate medium indirectly link, can be two element inside communication or two element mutual action relation.For ordinary skilled person in the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0037] As Figures 1 to 6 The utility model discloses a kind of test devices of simulated battery indirect cooling, with first direction X, second direction Y and third direction Z that intersect each other, comprising: main casing 1, liquid cooling plate 2, fixture 3, liquid nitrogen spraying mechanism 4 and infrared camera element 14;Main casing 1 includes top cover 11 and side plate 12, top cover 11 is fixedly connected with side plate 12, top cover 11 is provided with pressure relief hole 13 that passes through top cover 11;Liquid cooling plate 2 is assembled in third direction Z with main casing 1 and encloses and forms containing cavity 10, and liquid cooling plate 2 includes cooling flow channel 20, liquid inlet 21 and liquid outlet 22, cooling flow channel 20 is communicated with liquid inlet 21 and liquid outlet 22 respectively.

[0038] Fixture 3 is located in containing cavity 10, and fixture 3 includes at least two clamping plates 31, and fixed part 32 for connecting at least two clamping plates 31, at least two clamping plates 31 are arranged at intervals and form clamping space 30;Liquid nitrogen spraying mechanism 4 includes moving bracket 41 and spraying head 42, moving bracket 41 is arranged in containing cavity 10, spraying head 42 is installed on moving bracket 41, and moving bracket 41 has the freedom of movement along first direction X and second direction Y.

[0039] Infrared camera element 14 is installed on top cover 11, and infrared camera element 14 is used for shooting the temperature image of containing cavity 10, and infrared camera element 14 is electrically connected with liquid nitrogen spraying mechanism 4, when the local temperature of containing cavity 10 exceeds set value, spraying head 42 moves to high temperature place.

[0040] The test device for simulating indirect cooling of the battery adopts a design form of a main shell 1, a liquid cooling plate 2, a clamp 3, a liquid nitrogen spraying mechanism 4 and an infrared camera element 14, wherein the main shell 1 comprises a top cover 11 and a side plate 12, the top cover 11 is fixedly connected with the side plate 12, and the liquid cooling plate 2 is detachably assembled with the main shell 1 in a third direction Z and surrounds a containing cavity 10; during the test, the battery to be tested can be placed in the containing cavity 10, and the battery pack can be limited in a closed space through the detachable assembly of the main shell 1 and the liquid cooling plate 2, so as to simulate the working environment of the battery pack in the battery pack. Since the top cover 11 is provided with a pressure relief hole 13, the abnormal pressure can be released outward in time when the battery is in thermal runaway; the liquid cooling plate 2 comprises a cooling flow channel 20, an inlet 21 and an outlet 22, and the cooling liquid is introduced into the cooling flow channel 20, which can effectively cool the battery pack.

[0041] Further, the clamp 3 is arranged in the containing cavity 10, the clamp 3 comprises at least two clamping plates 31 and a fixing member 32 connecting the at least two clamping plates 31, and the at least two clamping plates 31 are arranged in a spaced manner and form a clamping space 30. During the test, a plurality of battery monomers 5 are arranged into a battery pack, and then the battery pack is placed in the clamping space 30, and the battery pack is clamped and fixed by the at least two clamping plates 31 and the fixing member 32, so that the position of the battery pack is stable during the test, and the battery monomer 5 can be ensured to be in a working state of bearing the clamping force.

[0042] In addition, the liquid nitrogen spraying mechanism 4 comprises a moving bracket 41 and a spraying head 42, the moving bracket 41 is arranged in the containing cavity 10, and the spraying head 42 is installed on the moving bracket 41; the infrared camera element 14 is installed on the top cover 11, the infrared camera element 14 is used for shooting the temperature image of the containing cavity 10, and the infrared camera element 14 is electrically connected with the liquid nitrogen spraying mechanism 4. The temperature image of the containing cavity 10 can be shot in real time by the infrared camera element 14, and the temperature distribution in the cavity can be obtained in time, and when the local temperature of the containing cavity 10 is detected to exceed the set value, the liquid nitrogen spraying mechanism 4 is automatically controlled to work.

[0043] Specifically, the spraying head 42 is flexibly moved along a first direction X and a second direction Y by the moving bracket 41, so that the spraying head 42 can be accurately moved to a high-temperature position and implement liquid nitrogen cooling, the purpose of quickly extinguishing and cooling the high-temperature area of the battery pack is achieved, the response and processing capacity of the test device to the temperature abnormality and the safety of the cell test are improved, and the battery thermal management process can be accurately simulated and researched.

[0044] In the embodiment, the moving support 41 comprises first sliding grooves 410 and a guide rail 411. The first sliding grooves 410 extend along the second direction Y, and two first sliding grooves 410 are arranged on the inner walls of the two side plates 12 opposite along the first direction X. The guide rail 411 extends along the first direction X, and the ends of the guide rail 411 are guidedly matched with the first sliding grooves 410. The first sliding grooves 410 are arranged on the inner walls of the side plates 12, which makes full use of the internal space of the main shell 1, improves the compactness of the structure of the moving support 41, and reserves sufficient space for the battery pack and other components. Moreover, the ends of the guide rail 411 are guidedly matched with the first sliding grooves 410 on both sides, which prevents the moving support 41 from shaking and deviating, and ensures the stability and accuracy of the movement of the spray head 42 in the plane formed by the first direction X and the second direction Y.

[0045] Moreover, the moving support 41 further comprises second sliding grooves 412 and a sliding seat 413. The second sliding grooves 412 are arranged on the guide rail 411 and extend along the first direction X. The sliding seat 413 is guidedly matched with the second sliding grooves 412, and the spray head 42 is mounted on the sliding seat 413. A first driver 414 is arranged between the first sliding grooves 410 and the guide rail 411, and a second driver 415 is arranged between the second sliding grooves 412 and the sliding seat 413. The spray head 42 moves along the second sliding grooves 412 on the sliding seat 413, which ensures the stability and position accuracy of the spray head 42 when moving quickly, and improves the cooling response speed.

[0046] As a further preferred scheme, the top cover 11 is provided with a first through hole 111 and a second through hole 112. The first through hole 111 is used for the liquid nitrogen pipeline to penetrate the top cover 11 and be connected with the spray head 42, and the second through hole 112 is used for the collection line to penetrate the top cover 11 and be electrically connected with the battery monomer 5. The liquid nitrogen pipeline penetrates the top cover 11 through the first through hole 111, which improves the continuous liquid nitrogen source of the liquid nitrogen spraying mechanism 4, ensures that the spray head 42 can spray liquid nitrogen in time, and guarantees the reliability and stability of the cooling work. The collection line penetrates the top cover 11 through the second through hole 112, which facilitates the transmission of the voltage and current parameters of the battery monomer 5 to the external data collection device, helps to deeply analyze the performance and change process of the battery test, and provides reliable data support for the optimization and improvement of the battery. In addition, the pipeline and the wire harness are prevented from interfering with other internal components, which ensures the rationality of the space layout.

[0047] In the embodiment, the test device simulating indirect cooling of the battery further comprises a backing plate 6, which is detachably installed on one side of the liquid cooling plate 2 close to the main shell 1. The one side of the backing plate 6 close to the main shell 1 is provided with first protrusions 61, which are distributed around the edge of the backing plate 6 and are in position cooperation with the clamp 3. The clamp 3 and the battery pack can be accurately positioned and installed, the positional accuracy of the battery pack in the accommodating cavity 10 is improved, displacement or loosening is prevented, and battery test errors caused by installation deviation of the clamp 3 are avoided.

[0048] Further, the other side of the backing plate 6 away from the main shell 1 is provided with second protrusions 62, the liquid cooling plate 2 is provided with grooves 23, which are arranged in a spaced manner with the cooling flow channel 20, and the second protrusions 62 are in concave-convex cooperation with the grooves 23. The concave-convex cooperation can increase the contact area between the backing plate 6 and the liquid cooling plate 2, improve the heat exchange and cooling efficiency of the liquid cooling plate 2 on the battery pack, and facilitate subsequent disassembly and replacement of the backing plate 6 without damaging the liquid cooling plate 2.

[0049] It should be noted that the battery pack and the backing plate 6 are fixed by structural glue, the side surface of the battery monomer 5 is pasted with MPP, and the large surface is pasted with aerogel and silica gel strips to simulate the real working condition of the battery cell in the battery pack. The main shell 1 is also provided with a puncture hole, which can be opened and used during puncture test, and sealed by rubber or a rubber strip when not in use; the top cover 11 is made of transparent acrylic material, and the battery thermal runaway process can be observed in real time. In addition, the liquid inlet 21 and the liquid outlet 22 of the liquid cooling plate 2 are connected with a cooling pipeline, and the cooling pipeline is connected with a water cooling machine and a circulating pump, and a flow meter is installed on the cooling pipeline to observe the flow and flow rate of the cooling liquid.

[0050] As a further preferred scheme, the clamping plate 31 comprises two first clamping plates 311 and two second clamping plates 312, the two first clamping plates 311 are arranged in a spaced manner along the second direction Y, the two second clamping plates 312 are arranged in a spaced manner along the first direction X, the first clamping plate 311 is provided with a connecting hole 313 at the end thereof in the first direction X, and the second clamping plate 312 penetrates through the connecting hole 313 along the second direction Y and connects the two first clamping plates 311. The fixing member 32 comprises a first fastening member 321 and a second fastening member 322, the first fastening member 321 is connected between the two first clamping plates 311, the second fastening member 322 is connected between the two second clamping plates 312, and the first fastening member 321 and the second fastening member 322 are both electric screw rods.

[0051] A stable frame structure is formed by the two first clamping plates 311 and the two second clamping plates 312, which can reliably clamp and fix the battery pack from the first direction X and the second direction Y, prevent the battery monomer 5 from being loose or displaced, and the frame clamp can adapt to battery packs of different sizes and shapes, has better clamping flexibility, the electric screw rod can accurately adjust the distance between the clamping plates, and ensure that the clamping force can be automatically controlled. In addition, the clamp 3 also includes a plurality of pressure sensors 33, which are arranged on the side of the first clamping plate 311 close to the clamping space 30, on the side of the second clamping plate 312 close to the clamping space 30, and the pressure sensor 33 is used to detect the clamping force of the clamp 3 on the battery pack. In combination with the clamping force detected by the pressure sensor 33, the real force data of the battery pack is provided, the working state of the electric screw rod can be adjusted in time, and the test efficiency and result accuracy are improved.

[0052] For example: the cooling liquid can be selected as an insulating fluorinated liquid, the battery pack is 1P32S, the battery monomer 5 is selected as a 280Ah lithium iron phosphate square shell battery cell, and the working voltage is 2.5V / 3.65V; the liquid inlet 21 and the liquid outlet 22 of the liquid cooling plate 2 are connected to the water cooler respectively by using a cooling pipeline, the cooling liquid is injected and the water cooler is started, the inlet temperature and flow rate are set, and the cooling liquid flows and circulates at the set temperature and flow rate.

[0053] At the same time, the battery pack is subjected to two 0.5CP charging and discharging tests, and the voltage parameters and temperature conditions of each battery monomer 5 are collected, and the specific process is as follows:

[0054]

[0055]

[0056] During the test, the flow rate of the cooling liquid can be changed to test the cooling effect of the cooling liquid with different flow rates on the battery.

[0057] The above only describes preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection range of the present application.

Claims

1. A test apparatus for simulating indirect cooling of a battery, having a first direction (X), a second direction (Y), and a third direction (Z), characterized in that, include: The main housing (1) includes a top cover (11) and a side plate (12) that are fixedly connected. The main top cover (11) is provided with a pressure relief hole (13). Liquid cooling plate (2), the liquid cooling plate (2) and the main housing (1) are fastened together in the third direction (Z) to form a cavity (10), the liquid cooling plate (2) includes a cooling channel (20), and an inlet (21) and an outlet (22) communicating with the cooling channel (20); A clamp (3) is disposed in the receiving cavity (10); The liquid nitrogen spraying mechanism (4) includes a movable support (41) and a spray head (42) mounted on the movable support (41). The movable support (41) is located in the accommodating cavity (10) and has degrees of freedom of movement along the first direction (X) and the second direction (Y). An infrared camera element (14) is installed on the top cover (11) and electrically connected to the liquid nitrogen spraying mechanism (4). The infrared camera element (14) is used to capture temperature images of the accommodating cavity (10) so that when the local temperature exceeds a set value, the spray head (42) moves to a high temperature location.

2. The experimental apparatus for simulating indirect battery cooling according to claim 1, characterized in that, The movable support (41) includes a first slide groove (410) and a guide rail (411). The first slide groove (410) extends along the second direction (Y). There are two first slide grooves (410), and the two first slide grooves (410) are disposed on the inner walls of two side plates (12) opposite to each other along the first direction (X). The guide rail (411) extends along the first direction (X), and the ends of the guide rail (411) are respectively guided and engaged with the first slide groove (410).

3. The experimental apparatus for simulating indirect battery cooling according to claim 2, characterized in that, The movable support (41) further includes a second slide groove (412) and a sliding seat (413). The second slide groove (412) is disposed on the guide rail (411) and extends along the first direction (X). The sliding seat (413) is guided and cooperates with the second slide groove (412). The spray head (42) is mounted on the sliding seat (413).

4. The experimental apparatus for simulating indirect battery cooling according to claim 3, characterized in that, A first driver (414) is provided between the first slide groove (410) and the guide rail (411), and a second driver (415) is provided between the second slide groove (412) and the sliding seat (413).

5. The experimental apparatus for simulating indirect battery cooling according to claim 1, characterized in that, The top cover (11) has a first through hole (111) and a second through hole (112). The first through hole (111) allows a liquid nitrogen pipeline to pass through the top cover (11) and connect to the spray head (42). The second through hole (112) allows a collection line to pass through the top cover (11) and connect to the battery cell (5).

6. The experimental apparatus for simulating indirect battery cooling according to claim 1, characterized in that, It also includes a pad (6), which is detachably installed on the side of the liquid cooling plate (2) near the main housing (1). The side of the pad (6) near the main housing (1) is provided with a first protrusion (61), which is distributed around the edge of the pad (6). The first protrusion (61) is positioned and engaged with the clamp (3).

7. The experimental apparatus for simulating indirect battery cooling according to claim 6, characterized in that, The pad (6) has a second protrusion (62) on the side away from the main housing (1), and the liquid cooling plate (2) has a groove (23). The groove (23) is spaced apart from the cooling channel (20), and the second protrusion (62) and the groove (23) are in concave-convex fit.

8. The experimental apparatus for simulating indirect battery cooling according to claim 1, characterized in that, The clamping plate (31) includes two first clamping plates (311) and two second clamping plates (312). The two first clamping plates (311) are arranged at intervals along the second direction (Y), and the two second clamping plates (312) are arranged at intervals along the first direction (X). The first clamping plates (311) have a connecting hole (313) at the end of the first direction (X). The second clamping plates (312) pass through the connecting hole (313) along the second direction (Y) and connect the two first clamping plates (311).

9. The experimental apparatus for simulating indirect battery cooling according to claim 8, characterized in that, The fastener (32) includes a first fastener (321) and a second fastener (322). The first fastener (321) is connected between two first clamping plates (311), and the second fastener (322) is connected between two second clamping plates (312). Both the first fastener (321) and the second fastener (322) are electric lead screws.

10. The experimental apparatus for simulating indirect battery cooling according to claim 8, characterized in that, The clamp (3) also includes a plurality of pressure sensors (33), which are all located on the side of the first clamping plate (311) near the clamping space (30) and the side of the second clamping plate (312) near the clamping space (30). The pressure sensors (33) are used to detect the clamping force of the clamp (3) on the battery cell assembly.

Images