Battery temperature testing device and system

Abstract

The utility model relates to a battery temperature testing device and system. In the device, a temperature adjusting plate group is used for being attached to at least two side surfaces of a battery to be tested; the temperature adjusting plate group is provided with at least two circulating channels; the liquid cooling circulation module comprises at least two liquid cooling circulation modules, and the liquid cooling circulation modules communicate with the circulation channels in a one-to-one correspondence manner; the control module is connected with the to-be-tested battery and each liquid cooling circulation module, and the control module is configured to charge and discharge the to-be-tested battery and control each liquid cooling circulation module to transmit the first liquid with the corresponding preset temperature to the corresponding circulation channel, so that temperature control on different positions of the to-be-tested battery is realized; therefore, the optimal state of the to-be-tested battery in the system can be conveniently simulated, the temperature boundary of the to-be-tested battery is explored, the temperature boundary test accuracy of the battery is improved, the test structure is simple, and the assembly is fast and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of battery testing, and particularly to a battery temperature testing device and system. Background Art

[0002] The thermal management system of a battery is usually arranged at the bottom of the battery. When the battery is cooled by high-rate fast charging, the temperature near the cold plate of the thermal management system at the bottom of the battery is relatively low, and the temperature of the pole column at the top of the battery, which is far from the cold plate, is relatively high, thus forming a temperature difference in the battery. The greater the temperature difference of the battery, the greater the impact on the performance and life of the battery. In order to explore the temperature boundary of the battery, obtain the optimal operating conditions of the battery, and give full play to the maximum advantages of the battery, it is usually necessary to conduct temperature boundary tests on the battery.

[0003] Currently, the battery to be tested is usually placed in a constant temperature box, and the temperature boundary test of the battery is carried out through natural heat dissipation cooling. It is difficult to simulate the optimal state of the battery in the system, and the error of the temperature boundary test of the battery is large. Utility Model Content

[0004] Based on this, a battery temperature testing device and system are provided.

[0005] In a first aspect, the present application provides a battery temperature testing device, including:

[0006] A temperature adjustment plate group for fitting at least two sides of the battery to be tested; the temperature adjustment plate group is provided with at least two circulation channels;

[0007] A liquid cooling circulation module including at least two liquid cooling circulation modules, and each liquid cooling circulation module is in one-to-one correspondence and communication with each circulation channel;

[0008] A control module respectively connected to the battery to be tested and each liquid cooling circulation module, and the control module is configured to charge and discharge the battery to be tested and control each liquid cooling circulation module to transfer a first liquid with a corresponding preset temperature to the corresponding circulation channel.

[0009] In one embodiment, the liquid cooling circulation module includes a first liquid cooling circulation module and a second liquid cooling circulation module; the temperature adjustment plate group includes a first temperature adjustment plate and a second temperature adjustment plate; the first temperature adjustment plate is used for fitting the first side of the battery to be tested, and the second temperature adjustment plate is used for fitting the second side of the battery to be tested;

[0010] The first temperature adjustment plate is at least provided with a first sub-channel and a second sub-channel; the second temperature adjustment plate is at least provided with a third sub-channel and a fourth sub-channel; the first sub-channel and the third sub-channel correspond to each other and are respectively communicated with the first liquid cooling circulation module; the second sub-channel and the fourth sub-channel correspond to each other and are respectively communicated with the second liquid cooling circulation module.

[0011] In one embodiment, the battery temperature testing device further includes a joint assembly, and the joint assembly at least includes a first joint, a second joint, a third joint, and a fourth joint;

[0012] The first end of the first joint communicates with the first end of the first sub-channel, the second end of the first joint communicates with the first end of the third sub-channel, and the third end of the first joint communicates with the first port of the first liquid cooling circulation module; the first end of the second joint communicates with the second end of the first sub-channel, the second end of the second joint communicates with the second end of the third sub-channel, and the third end of the second joint communicates with the second port of the first liquid cooling circulation module;

[0013] The first end of the third joint communicates with the first end of the second sub-channel, the second end of the third joint communicates with the first end of the fourth sub-channel, and the third end of the third joint communicates with the first port of the second liquid cooling circulation module; the first end of the fourth joint communicates with the second end of the second sub-channel, the second end of the fourth joint communicates with the second end of the fourth sub-channel, and the third end of the fourth joint communicates with the second port of the second liquid cooling circulation module.

[0014] In one embodiment, the battery temperature testing device further includes a first fastening assembly; the first temperature regulating plate includes a first through-hole group, and the second temperature regulating plate includes a second through-hole group; the first fastening assembly is used to pass through the first through-hole group and the second through-hole group to lock the battery under test between the first temperature regulating plate and the second temperature regulating plate.

[0015] In one embodiment, the battery temperature testing device further includes a support plate; the support plate is disposed between the first temperature regulating plate and the second temperature regulating plate; the support plate is used to support the battery under test.

[0016] In one embodiment, the battery temperature testing device further includes a second fastening assembly; the first temperature regulating plate further includes a third through-hole group, the second temperature regulating plate includes a fourth through-hole group, and the support plate includes a fifth through-hole group;

[0017] The second fastening assembly is used to pass through the third through-hole group, the fifth through-hole group, and the fourth through-hole group to lock the support plate between the first temperature regulating plate and the second temperature regulating plate.

[0018] In one embodiment, the battery temperature testing device further includes a joint assembly, and the joint assembly at least includes a fifth joint, a sixth joint, a seventh joint, and an eighth joint;

[0019] The first end of the fifth joint communicates with the first end of the first sub-channel, and the second end of the fifth joint communicates with the first port of the first liquid cooling circulation module; the first end of the sixth joint communicates with the first end of the third sub-channel, and the second end of the sixth joint communicates with the second port of the first liquid cooling circulation module; the second end of the first sub-channel communicates with the second end of the third sub-channel;

[0020] The first end of the seventh connector is connected to the first end of the second sub-channel, and the second end of the seventh connector is connected to the first port of the second liquid cooling circulation module; the first end of the eighth connector is connected to the first end of the fourth sub-channel, and the second end of the eighth connector is connected to the second port of the second liquid cooling circulation module; the second end of the second sub-channel is connected to the second end of the fourth sub-channel.

[0021] In one embodiment, the battery temperature testing device further includes a first conductive member and a second conductive member;

[0022] The first conductive member is connected to the positive electrode of the battery to be tested, the second conductive member is connected to the negative electrode of the battery to be tested, and the control module is respectively connected to the first conductive member and the second conductive member.

[0023] In one embodiment, the battery temperature testing device further includes a plurality of temperature sensing modules; at least one temperature sensing module is provided in the circulation channel.

[0024] In a second aspect, the present application provides a battery temperature testing system, including the battery temperature testing device according to any one of the above.

[0025] One of the above technical solutions has the following advantages and beneficial effects:

[0026] In the above battery temperature testing device, it includes a temperature adjustment plate group, a liquid cooling circulation module group, and a control module. The temperature adjustment plate group is used to fit at least two sides of the battery to be tested; the temperature adjustment plate group is provided with at least two circulation channels; the liquid cooling circulation module group includes at least two liquid cooling circulation modules, and each liquid cooling circulation module is in one-to-one correspondence and communication with each circulation channel; the control module is respectively connected to the battery to be tested and each liquid cooling circulation module, and the control module is configured to charge and discharge the battery to be tested, and control each liquid cooling circulation module to transmit a first liquid at a corresponding preset temperature to the corresponding circulation channel, so as to realize the temperature boundary test of the battery to be tested. The present application realizes the adjustment of the temperature of the corresponding circulation channel by setting a temperature adjustment plate group on at least two sides of the battery to be tested, dividing the temperature adjustment plate group into at least two circulation channels, and each circulation communication is separately connected through a corresponding liquid cooling circulation module, and then controlling the temperature of the first liquid output by the corresponding liquid cooling circulation module through the control module, so as to control the temperature of different positions of the battery to be tested, so as to facilitate simulating the optimal state of the battery to be tested in the system, exploring the temperature boundary of the battery to be tested, improving the accuracy of the battery temperature boundary test, and having a simple test structure and quick and convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the first perspective of the battery temperature testing device in the embodiment of the present application;

[0028] Figure 2Schematic cross-sectional structure diagram of the battery temperature testing device in the embodiment of the present application;

[0029] Figure 3 Exploded structure diagram of the battery temperature testing device in the embodiment of the present application;

[0030] Figure 4 Schematic cross-sectional structure diagram of the first temperature regulating plate in the embodiment of the present application;

[0031] Figure 5 Schematic cross-sectional structure diagram of the second temperature regulating plate in the embodiment of the present application;

[0032] Figure 6 Schematic diagram of the first circuit structure of the battery temperature testing device in the embodiment of the present application;

[0033] Figure 7 Schematic diagram of the second circuit structure of the battery temperature testing device in the embodiment of the present application.

[0034] Reference numerals:

[0035] 10. Temperature regulating plate group; 110. First temperature regulating plate; 112. First through-hole group; 114. Third through-hole group; 120. Second temperature regulating plate; 122. Second through-hole group; 124. Fourth through-hole group; 130. Circulation channel; 132. First sub-channel; 134. Second sub-channel; 136. Third sub-channel; 138. Fourth sub-channel; 20. Liquid cooling circulation module; 210. First liquid cooling circulation module; 220. Second liquid cooling circulation module; 30. Control module; 410. First joint; 420. Second joint; 430. Third joint; 440. Fourth joint; 510. First fastening assembly; 520. Second fastening assembly; 60. Support plate; 610. Fifth through-hole group; 710. First conductive part; 720. Second conductive part; 80. Temperature sensing module; 90. Battery under test. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] It should be noted that in the description and claims of this application and the above-mentioned drawings, terms such as "first", "second", etc. are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances for the embodiments of this application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0039] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0040] In addition, the meaning of the term "plurality" should be two or more.

[0041] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with the embodiments.

[0042] In one embodiment, as Figure 1 、 Figure 2 and Figure 6 shown, a battery temperature test device is provided, which includes a temperature adjustment plate group 10, a liquid cooling circulation module 20 and a control module 30. The temperature adjustment plate group 10 is used to fit at least two sides of the battery 90 to be tested; the temperature adjustment plate group 10 is provided with at least two circulation channels 130; the liquid cooling circulation module 20 includes at least two liquid cooling circulation modules, and each liquid cooling circulation module is in one-to-one correspondence and communication with each circulation channel 130; the control module 30 is respectively connected to the battery 90 to be tested and each liquid cooling circulation module, and the control module 30 is configured to charge and discharge the battery 90 to be tested, and control each liquid cooling circulation module to transmit a first liquid with a corresponding preset temperature to the corresponding circulation channel 130.

[0043] Among them, the battery 90 to be tested can be, but is not limited to, a lithium-ion battery. The battery 90 to be tested can have a rectangular structure. The battery 90 to be tested can be composed of a single monomer cell. In another example, the battery 90 to be tested can also be composed of several monomer cells in series and / or parallel. The battery 90 to be tested can include a front side, a rear side, a left side, a right side, a top surface, and a bottom surface. For example, at least two sides of the battery 90 to be tested can include the front side and the rear side.

[0044] The temperature regulation plate group 10 can be composed of at least two temperature regulation plates. The temperature regulation plates can be used to fit the corresponding sides of the battery 90 to be tested. Each temperature regulation plate is correspondingly and fittingly arranged with each side of the battery 90 to be tested. Exemplarily, the temperature regulation plate group 10 can be fittingly arranged on the corresponding sides of the battery 90 to be tested by means of bonding and / or crimping, etc., so as to realize the close fitting of the temperature regulation plate group 10 and the battery 90 to be tested, thereby being able to improve the heat conduction efficiency between the temperature regulation plate group 10 and the battery 90 to be tested. The interior of the temperature regulation plate group 10 can be divided into at least two circulation channels 130. The circulation channels 130 can be used to transport the first liquid. Each circulation channel 130 can circulate and transport the first liquid independently. Furthermore, by controlling the temperature of the first liquid, the heat conduction temperature of different circulation channels 130 can be realized, and precise temperature regulation of different positions of the battery 90 to be tested can be achieved. It should be noted that the first liquid can be, but is not limited to, water, ethylene glycol, etc.

[0045] The liquid cooling circulation module 20 can be composed of at least two liquid cooling circulation modules. The liquid cooling circulation modules can be used to transport the first liquid to the corresponding circulation channels 130. Exemplarily, the liquid cooling circulation module can include a pump body and a first container. The pump body is connected to the first container, and the first container is connected to the corresponding circulation channel 130. The first container is used to store the first liquid, and the pump body can be used to drive the first liquid for transmission. Exemplarily, the liquid cooling circulation module further includes a heating unit and a refrigeration unit. The heating unit can be used to heat the first liquid, and the refrigeration unit can be used to cool the first liquid, thereby realizing precise temperature regulation of the first liquid.

[0046] Based on the control module 30 being electrically connected to the battery 90 to be tested, furthermore, the control module 30 can be used to perform charge and discharge tests on the battery 90 to be tested; based on the control module 30 being electrically connected to each liquid cooling circulation module, furthermore, the control module 30 can be used to control each liquid cooling circulation module to output the first liquid at a preset temperature, so that the first liquid at the preset temperature can be transported to the corresponding circulation channel 130 for precise temperature regulation of the circulation channel 130. Accordingly, the corresponding circulation channel 130 can perform precise temperature regulation on the corresponding temperature of the battery 90 to be tested, realizing the simulation of the temperature difference state of the battery 90 to be tested in the system, so as to perform temperature boundary tests on the battery 90 to be tested.

[0047] In the above embodiments, the temperature adjustment plate group 10 is used to fit at least two sides of the battery 90 to be tested; the temperature adjustment plate group 10 is provided with at least two circulation channels 130; the liquid cooling circulation module 20 includes at least two liquid cooling circulation modules, and each liquid cooling circulation module is in one-to-one correspondence and communication with each circulation channel 130; the control module 30 is respectively connected to the battery 90 to be tested and each liquid cooling circulation module, and the control module 30 is configured to charge and discharge the battery 90 to be tested, and control each liquid cooling circulation module to transmit a first liquid at a corresponding preset temperature to the corresponding circulation channel 130, so as to realize the temperature boundary test of the battery 90 to be tested. In this application, by arranging the temperature adjustment plate group 10 to fit at least two sides of the battery 90 to be tested, and dividing the temperature adjustment plate group 10 into at least two circulation channels 130, each circulation communication is separately connected through the corresponding liquid cooling circulation module, and then the temperature of the first liquid output by the corresponding liquid cooling circulation module can be controlled by the control module 30, so as to adjust the temperature of the corresponding circulation channel 130, so as to control the temperature of different positions of the battery 90 to be tested, so as to facilitate simulating the best state of the battery 90 to be tested in the system, exploring the temperature boundary of the battery 90 to be tested, improving the accuracy of the temperature boundary test of the battery, and the test structure is simple and the assembly is quick and convenient.

[0048] In one embodiment, as Figure 2 、 Figure 4 and Figure 5 shown, the liquid cooling circulation module 20 includes a first liquid cooling circulation module 210 and a second liquid cooling circulation module 220; the temperature adjustment plate group 10 includes a first temperature adjustment plate 110 and a second temperature adjustment plate 120; the first temperature adjustment plate 110 is used to fit the first side of the battery 90 to be tested, and the second temperature adjustment plate 120 is used to fit the second side of the battery 90 to be tested; the first temperature adjustment plate 110 is at least provided with a first sub-channel 132 and a second sub-channel 134; the second temperature adjustment plate 120 is at least provided with a third sub-channel 136 and a fourth sub-channel 138; the first sub-channel 132 corresponds to the third sub-channel 136 and is respectively connected to the first liquid cooling circulation module 210; the second sub-channel 134 corresponds to the fourth sub-channel 138 and is respectively connected to the second liquid cooling circulation module 220.

[0049] For example, the first side of the battery 90 to be tested is opposite to the first side, the first side may be the large surface of the battery 90 to be tested, and the second side may be another large surface of the battery 90 to be tested. It should be noted that the large surface of the battery 90 to be tested refers to the side with the largest area in the battery 90 to be tested.

[0050] The first liquid cooling cycle module 210 can be used to output the first liquid at the first temperature, and the second liquid cooling cycle module 220 can be used to output the first liquid at the second temperature. The first temperature regulating plate 110 has a flat plate structure and is used to fit the first side of the battery under test 90. The first temperature regulating plate 110 is internally provided with a first sub-channel 132 and a second sub-channel 134. For example, the first sub-channel 132 can be formed by connecting a plurality of flow channels in series and / or in parallel, and the second sub-channel 134 can be formed by connecting a plurality of flow channels in series and / or in parallel.

[0051] The second temperature regulating plate 120 has a flat plate structure and is used to fit the second side of the battery under test 90. The second temperature regulating plate 120 is internally provided with a third sub-channel 136 and a fourth sub-channel 138. For example, the third sub-channel 136 can be formed by connecting a plurality of flow channels in series and / or in parallel, and the fourth sub-channel 138 can be formed by connecting a plurality of flow channels in series and / or in parallel.

[0052] Exemplarily, the first sub-channel 132 is located above the second sub-channel 134, and the third sub-channel 136 is located above the fourth sub-channel 138. Based on the fact that the first sub-channel 132 and the third sub-channel 136 are respectively connected to the first liquid cooling cycle module 210, the first liquid cooling cycle module 210 can transmit the first liquid at the first temperature to the first sub-channel 132 of the first temperature regulating plate 110 and the third sub-channel 136 of the second temperature regulating plate 120, so that the first sub-channel 132 conducts heat to the upper part of the first side of the battery under test 90 based on the first temperature, and the third sub-channel 136 conducts heat to the upper part of the second side of the battery under test 90 based on the first temperature, thereby realizing the control of the upper temperature of the battery under test 90 corresponding to the first temperature.

[0053] Based on the fact that the second sub-channel 134 and the fourth sub-channel 138 are respectively connected to the second liquid cooling cycle module 220, the second liquid cooling cycle module 220 can transmit the first liquid at the second temperature to the second sub-channel 134 of the first temperature regulating plate 110 and the fourth sub-channel 138 of the second temperature regulating plate 120, so that the second sub-channel 134 conducts heat to the lower part of the first side of the battery under test 90 based on the second temperature, and the fourth sub-channel 138 conducts heat to the lower part of the second side of the battery under test 90 based on the second temperature, thereby realizing the control of the lower temperature of the battery under test 90 corresponding to the second temperature, realizing the temperature control of different positions on the upper and lower parts of the battery under test 90, and further being able to simulate the optimal state of the battery under test 90 in the system, explore the temperature boundary of the battery under test 90, and improve the accuracy of the temperature boundary test of the battery.

[0054] In one example, the temperature boundary test process for the battery 90 to be tested is as follows: A control group and a parallel sample group are set up. To exclude the influence of accidental data on the results, at least 2 parallel samples are set. In the control group, the first liquid cooling circulation module 210 and the second liquid cooling circulation module 220 are set to output the first liquid at 25°C respectively. The parallel sample group can be set as follows: The first liquid cooling circulation module 210 is set to the first liquid with an equal gradient of 10°C. Taking this as a single-factor variable, 15°C, 35°C, and 45°C are each set as a group, and the second liquid cooling circulation module is still set to 25°C. It should be noted that the parallel sample group can also be designed as: The first liquid cooling circulation module 210 is set to 25°C, and the second liquid cooling circulation module 220 is set to the first liquid with an equal gradient of 5°C. Taking this as a single-factor variable, 20°C, 15°C, 10°C, and 5°C are each set as a group. The control module 30 controls the battery 90 to be tested to perform charge and discharge cycle tests based on 1C, and performs DCR (direct current internal resistance) tests every 50 cycles; and according to the test results, the cycle performance of the battery 90 to be tested at the corresponding temperature and temperature difference is compared, so as to realize the temperature boundary test of the battery 90 to be tested, and thus the best operating conditions of the battery 90 to be tested can be obtained, so as to exert the best working performance of the battery 90 to be tested. In addition, by simulating the temperature difference of the battery 90 to be tested in the system, it is beneficial to optimize the thermal management of the battery system; if it is tested that the temperature difference of the battery 90 to be tested is less than 10°C, the influence on the cycle life of the battery 90 to be tested is the smallest, then the system cycle channel 130 can be further fed back to optimize the direction and position layout.

[0055] It should be noted that, according to the different application scenario requirements of the battery 90 to be tested, the temperature of the first liquid output by the first liquid cooling circulation module 210 and the second liquid cooling circulation module 220 can be adjusted. For example, the temperature of the first liquid output by the first liquid cooling circulation module 210 can be set to a gradient value of 5°C, etc.

[0056] In one embodiment, such as Figure 1 and Figure 3As shown, the battery temperature test device further includes a joint assembly, and the joint assembly at least includes a first joint 410, a second joint 420, a third joint 430, and a fourth joint 440; the first end of the first joint 410 communicates with the first end of the first sub-channel 132, the second end of the first joint 410 communicates with the first end of the third sub-channel 136, and the third end of the first joint 410 communicates with the first port of the first liquid cooling circulation module 210; the first end of the second joint 420 communicates with the second end of the first sub-channel 132, the second end of the second joint 420 communicates with the second end of the third sub-channel 136, and the third end of the second joint 420 communicates with the second port of the first liquid cooling circulation module 210; the first end of the third joint 430 communicates with the first end of the second sub-channel 134, the second end of the third joint 430 communicates with the first end of the fourth sub-channel 138, and the third end of the third joint 430 communicates with the first port of the second liquid cooling circulation module 220; the first end of the fourth joint 440 communicates with the second end of the second sub-channel 134, the second end of the fourth joint 440 communicates with the second end of the fourth sub-channel 138, and the third end of the fourth joint 440 communicates with the second port of the second liquid cooling circulation module 220.

[0057] Wherein, the first joint 410, the second joint 420, the third joint 430, and the fourth joint 440 can all be three-way joints.

[0058] The first port of the first liquid cooling circulation module 210 can be an output end, and the second port of the first liquid cooling circulation module 210 can be a return end. Based on the connection of the first joint 410 to the first port of the first liquid cooling circulation module 210 and the second joint 420 to the second port of the first liquid cooling circulation module 210, the first sub-channel 132 and the third sub-channel 136 are connected between the first joint 410 and the second joint 420. Furthermore, the first liquid cooling circulation module 210 transmits the first liquid at the first temperature to the first sub-channel 132 of the first temperature regulating plate 110 and the third sub-channel 136 of the second temperature regulating plate 120 respectively through the first joint 410, so that the first sub-channel 132 conducts heat to the upper part of the first side of the battery under test 90 based on the first temperature, and the third sub-channel 136 conducts heat to the upper part of the second side of the battery under test 90 based on the first temperature. The first liquid in the first sub-channel 132 and the first liquid in the third sub-channel 136 respectively flow back to the first liquid cooling circulation module 210 through the second joint 420 to realize the circulating transmission of the first liquid, and further realize controlling the upper temperature of the battery under test 90 to correspond to the first temperature.

[0059] The first port of the second liquid cooling circulation module 220 can be an output end, and the second port of the second liquid cooling circulation module 220 can be a return end. Based on the third joint 430 connecting to the first port of the second liquid cooling circulation module 220 and the fourth joint 440 connecting to the second port of the second liquid cooling circulation module 220, the second sub-channel 134 and the fourth sub-channel 138 are communicated between the third joint 430 and the fourth joint 440. Furthermore, the second liquid cooling circulation module 220 transmits the first liquid at the second temperature to the second sub-channel 134 of the first temperature regulating plate 110 and the fourth sub-channel 138 of the second temperature regulating plate 120 respectively through the third joint 430, so that the second sub-channel 134 conducts heat to the lower part of the first side of the battery under test 90 based on the second temperature, and the fourth sub-channel 138 conducts heat to the lower part of the second side of the battery under test 90 based on the second temperature. The first liquid in the second sub-channel 134 and the first liquid in the fourth sub-channel 138 flow back to the second liquid cooling circulation module 220 through the fourth joint 440 respectively to realize the circulating transmission of the first liquid, and further realize the control that the lower temperature of the battery under test 90 corresponds to the second temperature, and realize the temperature control of different positions of the battery under test 90, so as to facilitate simulating the optimal state of the battery under test 90 in the system, exploring the temperature boundary of the battery under test 90, improving the accuracy of the temperature boundary test of the battery, and having a simple test structure and quick and convenient assembly.

[0060] In one embodiment, as Figure 2 and Figure 3 shown, the battery temperature test device further includes a first fastening assembly 510; the first temperature regulating plate 110 includes a first through-hole group 112, and the second temperature regulating plate 120 includes a second through-hole group 122; the first fastening assembly 510 is used to pass through the first through-hole group 112 and the second through-hole group 122 to lock the battery under test 90 between the first temperature regulating plate 110 and the second temperature regulating plate 120.

[0061] Among them, the first fastening assembly 510 may include a plurality of first fasteners, and the first fasteners may be bolts. The first through-hole group 112 may include a plurality of first through-holes, and the second through-hole group 122 may include a plurality of second through-holes, and each first through-hole and each second through-hole are arranged in one-to-one correspondence.

[0062] Exemplarily, at least two first through holes may be spaced apart and provided at positions adjacent to the periphery of the first temperature adjustment plate 110, and at least two second through holes may be spaced apart and provided at positions adjacent to the periphery of the second temperature adjustment plate 120. A first fastener passes through the corresponding first through hole and second through hole, and a certain pre-tightening force is applied through the torque of the first fastener to lock the battery under test 90 between the first temperature adjustment plate 110 and the second temperature adjustment plate 120, so as to achieve close fitting between the first temperature adjustment plate 110 and the first side of the battery under test 90, and close fitting between the second temperature adjustment plate 120 and the second side of the battery under test 90. It should be noted that by providing a first through hole group 112 at a position adjacent to the periphery of the first temperature adjustment plate 110, the flow channel of the first temperature adjustment plate 110 can be avoided, preventing liquid leakage or hindering liquid transmission of the first temperature adjustment plate 110; by providing a second through hole group 122 at a position adjacent to the periphery of the second temperature adjustment plate 120, the flow channel of the second temperature adjustment plate 120 can be avoided, preventing liquid leakage or hindering liquid transmission of the second temperature adjustment plate 120.

[0063] In one embodiment, as Figure 2 and Figure 3 shown, the battery temperature testing device further includes a support plate 60; the support plate 60 is disposed between the first temperature adjustment plate 110 and the second temperature adjustment plate 120; the support plate 60 is used to support the battery under test 90.

[0064] Wherein, the support plate 60 can be used to support the battery under test 90 to prevent the battery under test 90 from slipping.

[0065] For example, the support plate 60 can be disposed between the first temperature adjustment plate 110 and the second temperature adjustment plate 120 by means of screwing or the like, and the battery under test 90 is disposed on the support plate 60, playing a role in supporting the battery under test 90, avoiding the battery under test 90 from slipping between the first temperature adjustment plate 110 and the second temperature adjustment plate 120, and improving the safety of testing the battery under test 90.

[0066] In one embodiment, as Figure 2 and Figure 3 shown, the battery temperature testing device further includes a second fastening assembly 520; the first temperature adjustment plate 110 further includes a third through hole group 114, the second temperature adjustment plate 120 includes a fourth through hole group 124, and the support plate 60 includes a fifth through hole group 610; the second fastening assembly 520 is used to pass through the third through hole group 114, the fifth through hole group 610 and the fourth through hole group 124 to lock the support plate 60 between the first temperature adjustment plate 110 and the second temperature adjustment plate 120.

[0067] Among them, the second fastening assembly 520 may include a plurality of second fasteners, and the second fasteners may be bolts. The third through-hole group 114 may include a plurality of third through-holes, the fourth through-hole group 124 may include a plurality of fourth through-holes, and the fifth through-hole group 610 may include a plurality of fifth through-holes. The third through-holes, the fourth through-holes, and the fifth through-holes are arranged in one-to-one correspondence.

[0068] Exemplarily, at least two third through-holes may be arranged at intervals at the bottom of the first temperature adjustment plate 110, and at least two fourth through-holes may be arranged at intervals at the bottom of the second temperature adjustment plate 120. The second fasteners pass through the corresponding third through-holes, fifth through-holes, and fourth through-holes, and a certain pre-tightening force is applied through the torque of the second fasteners to lock the support plate 60 between the first temperature adjustment plate 110 and the second temperature adjustment plate 120. Furthermore, the battery under test 90 can be arranged on the support plate 60 to realize the support of the battery under test 90, and to prevent the battery under test 90 from falling off between the first temperature adjustment plate 110 and the second temperature adjustment plate 120 during the disassembly and assembly process, improving the safety of the temperature test of the battery under test 90.

[0069] In one embodiment, the battery temperature test device further includes a joint assembly, and the joint assembly at least includes a fifth joint, a sixth joint, a seventh joint, and an eighth joint; the first end of the fifth joint communicates with the first end of the first sub-channel 132, and the second end of the fifth joint communicates with the first port of the first liquid cooling circulation module 210; the first end of the sixth joint communicates with the first end of the third sub-channel 136, and the second end of the sixth joint communicates with the second port of the first liquid cooling circulation module 210; the second end of the first sub-channel 132 communicates with the second end of the third sub-channel 136; the first end of the seventh joint communicates with the first end of the second sub-channel 134, and the second end of the seventh joint communicates with the first port of the second liquid cooling circulation module 220; the first end of the eighth joint communicates with the first end of the fourth sub-channel 138, and the second end of the eighth joint communicates with the second port of the second liquid cooling circulation module 220; the second end of the second sub-channel 134 communicates with the second end of the fourth sub-channel 138.

[0070] Among them, the fifth joint, the sixth joint, the seventh joint, and the eighth joint may all be two-way joints.

[0071] Based on that the fifth joint is connected between the first port of the first liquid cooling circulation module 210 and the first end of the first sub-channel 132, the sixth joint is connected between the second port of the first liquid cooling circulation module 210 and the first end of the third sub-channel 136, the second end of the first sub-channel 132 communicates with the second end of the third sub-channel 136, and thus the first sub-channel 132 and the third sub-channel 136 form a series loop. Further, the first liquid cooling circulation module 210 sequentially transmits the first liquid at the first temperature to the first sub-channel 132 of the first temperature regulating plate 110 and the third sub-channel 136 of the second temperature regulating plate 120 through the fifth joint, so that the first sub-channel 132 conducts heat to the upper part of the first side surface of the battery under test 90 based on the first temperature, the third sub-channel 136 conducts heat to the upper part of the second side surface of the battery under test 90 based on the first temperature, and the first liquid in the third sub-channel 136 flows back to the first liquid cooling circulation module 210 through the sixth joint to realize the circulating transmission of the first liquid, and further realize controlling the upper temperature of the battery under test 90 to correspond to the first temperature.

[0072] Based on that the seventh joint is connected between the first port of the second liquid cooling circulation module 220 and the first end of the second sub-channel 134, the eighth joint is connected between the second port of the second liquid cooling circulation module 220 and the first end of the fourth sub-channel 138, the second end of the second sub-channel 134 communicates with the second end of the fourth sub-channel 138, and thus the second sub-channel 134 and the fourth sub-channel 138 form a series loop. Further, the second liquid cooling circulation module 220 sequentially transmits the first liquid at the second temperature to the second sub-channel 134 of the first temperature regulating plate 110 and the fourth sub-channel 138 of the second temperature regulating plate 120 through the seventh joint, so that the second sub-channel 134 conducts heat to the lower part of the first side surface of the battery under test 90 based on the second temperature, the fourth sub-channel 138 conducts heat to the lower part of the second side surface of the battery under test 90 based on the second temperature, and the first liquid in the fourth sub-channel 138 flows back to the second liquid cooling circulation module 220 through the eighth joint to realize the circulating transmission of the first liquid, and further realize controlling the lower temperature of the battery under test 90 to correspond to the second temperature, and realize temperature control of different positions of the battery under test 90, thereby facilitating simulating the optimal state of the battery under test 90 in the system, exploring the temperature boundary of the battery under test 90, and improving the accuracy of the battery temperature boundary test.

[0073] In one embodiment, as Figure 1 、 Figure 3 and Figure 7 shown, the battery temperature test device further includes a first conductive member 710 and a second conductive member 720; the first conductive member 710 is connected to the positive electrode of the battery under test 90, the second conductive member 720 is connected to the negative electrode of the battery under test 90, and the control module 30 is respectively connected to the first conductive member 710 and the second conductive member 720.

[0074] Among them, the first conductive member 710 and the second conductive member 720 can be, but are not limited to, aluminum busbars, and the first conductive member 710 and the second conductive member 720 can be in a sheet structure. Exemplarily, the first conductive member 710 can be connected to the positive electrode of the battery under test 90 by welding, and the second conductive member 720 can be connected to the negative electrode of the battery under test 90 by welding. Furthermore, the control module 30 can connect the first conductive member 710 and the second conductive member 720 to realize the connection of the positive and negative electrode circuits of the battery under test 90, facilitating the charge and discharge test of the battery under test 90.

[0075] In one embodiment, as Figure 7 shown, the battery temperature test device further includes a plurality of temperature sensing modules 80; at least 1 temperature sensing module 80 is provided in the circulation channel 130.

[0076] Among them, the temperature sensing module 80 can be used to detect the temperature of the temperature regulating plate group 10 at corresponding positions. For example, at least 1 temperature sensing module 80 can be provided in the first sub-channel 132 of the first temperature regulating plate 110, at least 1 temperature sensing module 80 can be provided in the second sub-channel 134 of the first temperature regulating plate 110, at least 1 temperature sensing module 80 can be provided in the third sub-channel 136 of the second temperature regulating plate 120, and at least 1 temperature sensing module 80 can be provided in the fourth sub-channel 138 of the second temperature regulating plate 120. By detecting the temperature of the corresponding channels through the temperature sensing module 80, it is possible to accurately control the temperature of the first sub-channel 132 and the second sub-channel 134 of the first temperature regulating plate 110, and to accurately control the temperature of the third sub-channel 136 and the fourth sub-channel 138 of the second temperature regulating plate 120. Furthermore, it is possible to control the temperature at different positions of the battery under test 90, improving the accuracy of the battery temperature boundary test.

[0077] In one embodiment, a battery temperature test system is further provided, including the battery temperature test device as described in any one of the above.

[0078] For the specific description content of the battery temperature test device, reference can be made to the specific description of the battery temperature test device in the above embodiments, which will not be elaborated here.

[0079] The temperature regulating plate group fits at least two sides of the battery under test; the temperature regulating plate group is provided with at least two circulation channels; the liquid cooling circulation module includes at least two liquid cooling circulation modules, and each liquid cooling circulation module is in one-to-one correspondence and communication with each circulation channel; the control module is respectively connected to the battery under test and each liquid cooling circulation module, and the control module is configured to charge and discharge the battery under test and control each liquid cooling circulation module to transmit a first liquid at a corresponding preset temperature to the corresponding circulation channel, realizing the temperature boundary test of the battery under test.

[0080] In the above embodiments, by arranging a temperature regulation plate group on at least two sides of the battery to be tested, and dividing the temperature regulation plate group into at least two circulation channels, each circulation communication is separately connected through a corresponding liquid cooling circulation module. Furthermore, the temperature of the first liquid output by the corresponding liquid cooling circulation module can be controlled through the control module, so as to adjust the temperature of the corresponding circulation channel, in order to control the temperature of different positions of the battery to be tested, thereby facilitating the simulation of the optimal state of the battery to be tested in the system, exploring the temperature boundary of the battery to be tested, improving the accuracy of the battery temperature boundary test, and having a simple test structure and quick and convenient assembly.

[0081] It should be noted that the battery temperature test system may further include components such as a display. Specifically, the battery temperature test system may include more components than those described in the above embodiments, or combine certain components, or have different component arrangements.

[0082] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0083] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A battery temperature testing device, characterized in that: include: A temperature regulating plate assembly, the temperature regulating plate assembly being used to adhere to at least two sides of the battery to be tested; The temperature regulating plate group is provided with at least two circulation channels; A liquid cooling circulation module, wherein the liquid cooling circulation module comprises at least two liquid cooling circulation modules, and each of the liquid cooling circulation modules is connected to each of the circulation channels in a one-to-one correspondence; A control module, wherein the control module is respectively connected to the battery to be tested and each of the liquid cooling circulation modules, and the control module is configured to charge and discharge the battery to be tested, and control each of the liquid cooling circulation modules to transmit a first liquid of a corresponding preset temperature to a corresponding circulation channel.

2. The battery temperature testing device according to claim 1, characterized in that: The liquid cooling circulation module includes a first liquid cooling circulation module and a second liquid cooling circulation module; the temperature regulating plate group includes a first temperature regulating plate and a second temperature regulating plate; the first temperature regulating plate is used to adhere to the first side of the battery to be tested, and the second temperature regulating plate is used to adhere to the second side of the battery to be tested; The first temperature regulating plate is provided with at least a first sub-channel and a second sub-channel; the second temperature regulating plate is provided with at least a third sub-channel and a fourth sub-channel; the first sub-channel corresponds to the third sub-channel and is respectively connected to the first liquid cooling circulation module; the second sub-channel corresponds to the fourth sub-channel and is respectively connected to the second liquid cooling circulation module.

3. The battery temperature testing device according to claim 2, characterized in that: Also included is a joint assembly, the joint assembly comprising at least a first joint, a second joint, a third joint and a fourth joint; The first end of the first joint is connected to the first end of the first sub-channel, the second end of the first joint is connected to the first end of the third sub-channel, and the third end of the first joint is connected to the first port of the first liquid cooling circulation module; the first end of the second joint is connected to the second end of the first sub-channel, the second end of the second joint is connected to the second end of the third sub-channel, and the third end of the second joint is connected to the second port of the first liquid cooling circulation module; The first end of the third joint is connected to the first end of the second sub-channel, the second end of the third joint is connected to the first end of the fourth sub-channel, and the third end of the third joint is connected to the first port of the second liquid cooling circulation module; the first end of the fourth joint is connected to the second end of the second sub-channel, the second end of the fourth joint is connected to the second end of the fourth sub-channel, and the third end of the fourth joint is connected to the second port of the second liquid cooling circulation module.

4. The battery temperature testing device according to claim 2, characterized in that: It also includes a first fastening component; the first temperature regulating plate includes a first through hole group, and the second temperature regulating plate includes a second through hole group; the first fastening component is used to pass through the first through hole group and the second through hole group to lock the battery to be tested between the first temperature regulating plate and the second temperature regulating plate.

5. The battery temperature testing device according to claim 2, characterized in that: It also includes a support plate; the support plate is arranged between the first temperature regulating plate and the second temperature regulating plate; the support plate is used to support the battery to be tested.

6. The battery temperature testing device according to claim 5, characterized in that: It also includes a second fastening assembly; the first temperature regulating plate also includes a third through hole group, the second temperature regulating plate includes a fourth through hole group, and the support plate includes a fifth through hole group; The second fastening assembly is used to pass through the third through hole group, the fifth through hole group and the fourth through hole group to lock the support plate between the first temperature regulating plate and the second temperature regulating plate.

7. The battery temperature testing device according to claim 2, characterized in that: Also included is a joint assembly, the joint assembly comprising at least a fifth joint, a sixth joint, a seventh joint and an eighth joint; The first end of the fifth joint is connected to the first end of the first sub-channel, and the second end of the fifth joint is connected to the first port of the first liquid cooling circulation module; the first end of the sixth joint is connected to the first end of the third sub-channel, and the second end of the sixth joint is connected to the second port of the first liquid cooling circulation module; the second end of the first sub-channel is connected to the second end of the third sub-channel; The first end of the seventh joint is connected to the first end of the second sub-channel, and the second end of the seventh joint is connected to the first port of the second liquid cooling circulation module; the first end of the eighth joint is connected to the first end of the fourth sub-channel, and the second end of the eighth joint is connected to the second port of the second liquid cooling circulation module; the second end of the second sub-channel is connected to the second end of the fourth sub-channel.

8. The battery temperature testing device according to any one of claims 1 to 7, characterized in that: Also includes a first conductive member and a second conductive member; The first conductive member is connected to the positive electrode of the battery to be tested, the second conductive member is connected to the negative electrode of the battery to be tested, and the control module is connected to the first conductive member and the second conductive member respectively.

9. The battery temperature testing device according to any one of claims 1 to 7, characterized in that: Also includes several temperature sensing modules; The circulation channel is provided with at least one temperature sensing module.

10. A battery temperature testing system, characterized in that: It comprises a battery temperature testing device as claimed in any one of claims 1 to 9.

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