Liquid cooling plate, battery pack with liquid cooling plate and electric equipment applying battery pack

Abstract

The utility model discloses a liquid cooling plate, a battery pack with the liquid cooling plate and electric equipment applying the battery pack. The liquid cooling plate comprises a cooling plate and a pulling plate structure, the cooling plate comprises a first surface, a second surface and a side surface, the side surface is connected to the first surface and the second surface, at least one of the first surface and the second surface is used for installing a battery module, and the pulling plate structure is connected to the side surface of the cooling plate. And the pulling plate structure and the cold plate are jointly used for limiting at least one battery module. According to the battery pack, the pulling plate structure is located on the side face of the cold plate, so that the pulling plate structure does not interfere with the heat conduction effect between the battery module and the cold plate, the heat dissipation effect of the battery pack is improved, the service life of the battery pack is prolonged, and the frequency of replacing the battery pack by the electric equipment using the battery pack is reduced.

Description

Technical Field

[0001] The utility model relates to the field of liquid cooling plates, in particular to a liquid cooling plate, a battery pack with the liquid cooling plate and an electrical device using the battery pack. Background Art

[0002] Because the battery module inside the battery pack will generate heat during operation, a liquid cooling plate in thermal contact with the battery module will be installed in the battery pack, and heat conduction will occur between the liquid cooling plate and the battery module, so that the liquid cooling plate cools the battery module and ensures the normal operation of the battery module. However, in the existing battery pack, in order to ensure a stable connection between the battery module and the liquid cooling plate, a connecting plate and an adhesive layer will be set between the battery module and the liquid cooling plate. In this way, the heat generated by the battery module needs to pass through the pull plate and the adhesive layer before reaching the liquid cooling plate, that is, the heat conduction effect between the battery module and the liquid cooling plate is affected by other structures located on the heat conduction path between the two, and the heat of the battery module cannot be transferred to the liquid cooling plate in time, and part of the heat that cannot be transferred out of the battery module in time will remain in the battery module, thereby accelerating the chemical reaction speed inside the battery, shortening the life of the battery module, and thus reducing the service life of the battery pack. Utility Model Content

[0003] In view of this, the present application provides a liquid cooling plate, a battery pack having the liquid cooling plate, and an electrical equipment using the battery pack. By improving the structure of the liquid cooling plate, a stable connection relationship between the liquid cooling plate and the battery module can be ensured, and the heat conduction effect between the two can be increased, thereby increasing the heat dissipation effect of the liquid cooling plate on the battery module to a certain extent, increasing the heat dissipation capacity of the battery pack, and thereby improving the service life of the battery pack, thereby solving the above-mentioned technical problems to a certain extent.

[0004] A first aspect of an embodiment of the present application provides a liquid cooling plate, comprising a cold plate and a pull plate structure, the cold plate comprising a first surface and a second surface arranged opposite to each other, and a side surface connecting the first surface and the second surface, at least one surface of the first surface and the second surface is used to install a battery module, the pull plate structure is connected to the side surface or the edge area of ​​the first surface or the second surface of the cold plate, and is located on the corresponding first surface or second surface, the pull plate structure and the cold plate are used together to limit at least one battery module, wherein, because the installation position of the pull plate structure is located on the side of the cold plate, when the pull plate structure is connected to the side, the pull plate structure will not interfere with the heat conduction effect between the battery module and the liquid cooling plate.

[0005] In some embodiments of the first aspect, the cold plate includes a flat plate and a flow channel plate, wherein the flow channel plate is stacked on one side of the flat plate; the side walls of the flat plate and the flow channel plate jointly form a side surface of the cold plate, and the pull plate structure is connected to the side wall surface of the flat plate and / or the side wall surface of the flow channel plate to limit the battery module together with the cold plate.

[0006] In some embodiments of the first aspect, the pull plate structure is connected to the side wall surface of the flow channel plate, and the pull plate structure is parallel to the side wall surface of the flow channel plate so as to form a connection surface for limiting the battery module, wherein the pull plate structure can be formed by local bending of the flow channel plate and / or the flat plate.

[0007] In some embodiments of the first aspect, the pull plate structure is bent toward the side of at least one of the first surface and the second surface to form a connection surface for limiting the battery module on at least any one side of the pull plate structure.

[0008] In some embodiments of the first aspect, at least one pulling plate structure is connected to two opposite sides of the cold plate to limit the battery module together with the cold plate.

[0009] In some embodiments of the first aspect, the side surface includes a first side surface and a second side surface that are adjacently arranged, and the pulling plate structure connects the first side surface and / or the second side surface to limit the battery module together with the cold plate.

[0010] A second aspect of an embodiment of the present application provides a battery pack, comprising a battery module and the above-mentioned liquid cooling plate, wherein the battery module is mounted on at least one of the first surface and the second surface.

[0011] In some embodiments of the second aspect, the battery module includes a first battery module, and the battery pack also includes a connecting pull plate, the first battery module is connected to the first surface, and the connecting pull plate is connected to the pull plate structure to jointly limit the first battery module with the cold plate.

[0012] In some embodiments of the second aspect, the battery module includes a first battery module, and the battery pack also includes a cover plate, the cold plate and the cover plate are respectively arranged on opposite sides of the first battery module, and the cold plate and the cover plate are respectively connected to opposite sides of the connecting pull plate to jointly limit the first battery module.

[0013] In some embodiments of the second aspect, a thermally conductive adhesive layer is provided between the first battery module and the first surface, and the first battery module can be directly connected to the first surface through the thermally conductive adhesive layer to reduce the heat conductive medium between the first battery module and the cold plate.

[0014] In some embodiments of the second aspect, the battery module also includes a second battery module, a battery tray and a connecting side plate, the opposite sides of the second battery module are respectively connected to the second surface and the battery tray, the opposite sides of the connecting side plate are respectively connected to the side surface and the battery tray, the battery tray is used to provide the support required for the second battery module, the connecting side plate and the cold plate jointly limit the second battery module, and the battery tray can be stably connected to the cold plate through the connecting side plate, so that the second battery module can stably thermally contact the cold plate.

[0015] In some embodiments of the second aspect, a thermally conductive adhesive layer is provided between the second battery module and the second surface, and the second battery module can be directly connected to the second surface through the thermally conductive adhesive layer to reduce the heat conductive medium between the second battery module and the cold plate.

[0016] In some embodiments of the second aspect, the battery pack further includes a protective plate connected to a surface of the battery tray away from the second battery module side to reduce the degree of damage to the battery tray.

[0017] A third aspect of an embodiment of the present application provides an electrical device, which is equipped with the above-mentioned battery pack, and the battery pack is used to supply power to the electrical device. The battery pack can reduce the frequency of replacing the battery pack of the electrical device.

[0018] In the present application, in order to enhance the cooling effect of the liquid cooling plate on the battery module in the battery pack, the structure of the liquid cooling plate is improved, and the installation position of the pull-plate structure on the liquid cooling plate is adjusted so that the pull-plate structure is no longer located between the battery module and the liquid cooling plate, that is, the pull-plate structure is not located on the heat exchange path between the battery module and the surface of the cold plate, and will not affect the heat exchange effect between the battery module and the surface of the cold plate. Thus, the temperature reduction and cooling effect of the liquid cooling plate on the battery module is improved, and the service life of the battery module is extended, thereby improving the heat dissipation effect of the battery pack and extending the service life of the battery pack; in addition, the frequency of replacing the battery pack of the electrical equipment equipped with the battery pack can be reduced, which saves the operation and maintenance costs of the equipment to a certain extent, and also reduces unnecessary waste of resources to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a battery pack in one embodiment of the present application;

[0021] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the liquid cooling plate;

[0023] Figure 4 for Figure 3 Exploded view of the liquid cooling plate;

[0024] Figure 5 for Figure 1An exploded view of the first battery module and the structure connected thereto;

[0025] Figure 6 A schematic diagram of the simplified structure of a device in this application.

[0026] Description of Figure Numbers:

[0027] 1-battery pack, 1a-battery module, 10-first battery module, 11-cover plate, 11a-structural adhesive layer, 12-connecting side plate, 13-connecting beam, 14-connecting pull plate, 20-second battery module, 21-connecting side plate, 30-liquid cooling plate, 30a-first side surface, 30b-second side surface, 30c-first surface, 30d-second surface, 31-flow plate, 311-side wall surface (of flow plate), 32-flat plate, 321-side wall surface (of flat plate), 33-pull plate structure, 34-liquid inlet, 35-liquid outlet, 36-cold plate, 40-thermal conductive adhesive layer, 50-battery tray, 51-protective plate, 2-equipment body, 2a-battery compartment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application is clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0029] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meaning as understood by a person of ordinary skill in the field to which this application belongs. The words "one", "an" or "the" and the like used in this application do not indicate a quantitative limitation, but are only used to indicate the presence of at least one. The words "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] Please refer to Figure 1 , Figure 2 and Figure 5 The present application discloses a battery pack 1, which is used to supply power to electrical equipment. In the present application, the battery pack 1 includes a battery module 1a and a liquid cooling plate 30. It should be understood that when the battery pack 1 is operating, the battery module 1a generates heat due to work. In order to reduce the influence of heat on the operation of the battery module 1a, the battery module 1a needs to be cooled. Therefore, a liquid cooling plate 30 is provided in the battery pack 1, and the liquid cooling plate 30 is in thermal contact with the battery module 1a. Through heat conduction between the two, the liquid cooling plate 30 can take away the excess heat generated by the work of the battery module 1a, so that the battery module 1a can operate at room temperature, thereby enabling the battery module 1a to operate normally.

[0032] In some embodiments, the liquid cooling plate 30 in the battery pack 1 includes a cold plate 36 and a pull plate structure 33, the cold plate 36 includes a first surface 30c, a second surface 30d, and a side surface connecting the first surface 30c and the second surface 30d, at least one surface of the first surface 30c and the second surface 30d is used to install the battery module 1a, the pull plate structure 33 is connected to the side surface, or the pull plate structure 33 is connected to the first surface 30c or the second surface 30d of the cold plate 36, and the pull plate structure 33 and the cold plate 36 are used together to limit at least one battery module 1a.

[0033] In this embodiment, the liquid cooling plate 30 is provided with a pull plate structure 33. In the assembled battery pack 1, the pull plate structure 33 is connected to the side of the cold plate 36, or to the edge area of ​​the first surface 30c or the second surface 30d, so that when the battery module 1a is in thermal contact with the cold plate 36, the pull plate structure 33 and the liquid cooling plate 30 are jointly limited to the battery module 1a, so that the battery module 1a can stably thermally contact the liquid cooling plate 30. Among them, because the pull plate structure 33 is connected to the side of the cold plate 36, or the edge area of ​​the first surface 30c or the second surface 30d, the pull plate structure 33 is not located between the battery module 1a and the liquid cooling plate 30, that is, the pull plate structure 33 is not located on the heat conduction path between the battery module 1a and the liquid cooling plate 30, so the pull plate structure 33 will not affect the heat conduction effect between the battery module 1a and the liquid cooling plate 30.

[0034] In summary, the battery pack 1 in the present application improves the structure of the liquid cooling plate 30 and adjusts the installation position of the pull plate structure 33 on the liquid cooling plate 30, so that the pull plate structure 33 is not located on the heat conduction path between the battery module 1a and the liquid cooling plate 30. Therefore, under the premise of ensuring stable thermal contact between the liquid cooling plate 30 and the battery module 1a, by reducing the heat conductive medium between the battery module 1a and the liquid cooling plate 30, the temperature reduction and cooling effect of the liquid cooling plate 30 on the battery module 1a is improved, and the service life of the battery module 1a is extended, thereby improving the heat dissipation effect of the battery pack 1 and extending the service life of the battery pack 1; in addition, the frequency of replacing the battery pack 1 of the electrical equipment equipped with the battery pack 1 can be reduced, which saves the operation and maintenance costs of the equipment to a certain extent, and also reduces unnecessary waste of resources to a certain extent.

[0035] Please refer to the detailed Figure 3 and Figure 4 In some embodiments, the cold plate 36 includes a flat plate 32 and a flow channel plate 31, and the flow channel plate 31 is stacked on one side of the flat plate 32; the side wall surface 311 of the flat plate 32 and the flow channel plate 31 together form the side surface of the cold plate 36, and the pull plate structure 33 is connected to the side wall surface 321 of the flat plate 32 and / or the side wall surface 311 of the flow channel plate 31 (wherein the side wall surface 321 of the flat plate 32 and the side wall surface 311 of the flow channel plate 31 can refer to Figure 4 As shown in the two enlarged views of the parts in FIG. 1 , on the first surface 30c and / or the second surface 30d of the cold plate 36, the pull plate structure 33 can prevent the battery module 1a from sliding along the first surface 30c and / or the second surface 30d, that is, the pull plate structure 33 and the cold plate 36 jointly limit the battery module 1a, so that the battery module 1a and the liquid cold plate 30 can maintain stable thermal contact, thereby improving the cooling effect of the liquid cold plate 30 on the battery module 1a, thereby improving the heat dissipation effect of the battery pack 1.

[0036] It should be noted that in Figure 4The first side surface 30a and the second side surface 30b indicated therein are structural features of the cold plate 36, the side wall surface 311 (of the flow channel plate 31) is a structural feature of the flow channel plate 31, and the side wall surface 321 (of the flat plate 32) is a structural feature of the flat plate 32. In some embodiments, when the flow channel plate 31 is directly connected to the flat plate 32 to form the cold plate 36, the side wall surface 311 of the flow channel plate 31 is connected to the side wall surface 321 of the flat plate 32 to form the first side surface 30a and the second side surface 30b, that is, the side wall surface 311 of the flow channel plate 31 and the side wall surface 321 of the flat plate 32 are both two components forming the first side surface 30a and the second side surface 30b. In summary, although there is overlap in the position of the battery pack (in the assembled state), the specific structures they refer to and the individuals to which the structures belong are different.

[0037] In the above embodiment, it should be understood that the cold plate 36 is provided with a liquid inlet 34 and a liquid outlet 35, and the flat plate 32 and the flow channel plate 31 can limit the liquid cooling cavity of the cold plate 36, and the liquid cooling cavity is connected to the liquid inlet 34 and the liquid outlet 35, wherein the liquid cooling cavity is used to inject a circulating low-temperature fluid. Specifically, when the battery pack 1 is turned on, the low-temperature fluid flows into the liquid cooling chamber from the liquid inlet 34. Under the guidance of the flow channel plate 31, the low-temperature fluid first flows to the deep part of the liquid cooling chamber, and then returns from the deep part of the liquid cooling chamber to the liquid outlet 35. During the flow of the low-temperature fluid in the liquid cooling chamber, the low-temperature fluid and the surface of the cold plate 36 are heat-conducted so as to absorb the heat transferred from the battery module 1a to the surface of the cold plate 36. As the low-temperature fluid that absorbs the heat flows out of the liquid cooling chamber along the liquid outlet 35, this part of the heat is taken away from the liquid cooling chamber by the low-temperature fluid. Thus, the liquid cooling plate 30 cools the battery module 1a, that is, the liquid cooling plate 30 takes the heat of the battery module 1a away from the liquid cooling chamber through the loop flow of the low-temperature fluid, and after the low-temperature fluid that absorbs the heat flows out of the liquid outlet 35, it can be cooled by the cooler and then participate in the above-mentioned cooling operation again.

[0038] For reference Figure 2 In some embodiments, the pull plate structure 33 is connected to (eg, welded, screwed, etc.) the side wall surface 311 of the flow channel plate 31 , and the pull plate structure 33 is parallel to the side wall surface 311 of the flow channel plate 31 .

[0039] Please refer to Figure 4 and Figure 5In some embodiments, the pull plate structure 33 is connected to the side wall surface 311 of the flow channel plate 31, and the pull plate structure 33 is parallel to the side wall surface 311 of the flow channel plate 31, so that the flow channel plate 31 can form a limiting surface for limiting the battery module 1a. The pull plate structure 33 can be formed by bending the edge of the flow channel plate 31 and / or the flat plate 32, that is, the pull plate structure 33 and the flow channel plate 31 and / or the flat plate 32 are integrally formed, so that the pull plate structure 33 and the flow channel plate 31 and / or the flat plate 32 have a high connection strength.

[0040] In other embodiments, the plate pull structure 33 is connected to the side wall surface 321 of the flat plate 32, and the plate pull structure 33 is parallel to the side wall surface 321 of the flat plate 32, so that the flat plate 32 can form a limiting surface for limiting the battery module 1a. The plate pull structure 33 can be formed by bending the edge of the flow channel plate 31 and / or the flat plate 32, that is, the plate pull structure 33 and the flow channel plate 31 and / or the flat plate 32 are integrally formed, so that the plate pull structure 33 and the flow channel plate 31 and / or the flat plate 32 have a high connection strength.

[0041] Among them, in some other embodiments, the pulling plate structure 33 can also exist independently, and its overall shape is a flat plate, and the plate surface of the pulling plate structure 33 is parallel to the side wall surface 311 of the flow channel plate 31 (or the side wall surface 321 of the flat plate 32), wherein the width of the pulling plate structure 33 is greater than the side height of the cold plate 36, so that the pulling plate structure 33 can be partially higher than the first surface 30c and / or the second surface 30d, and the part of the pulling plate structure 33 that is higher than the first surface 30c and / or the second surface 30d can form a limiting surface for limiting the battery module 1a, so that the pulling plate structure 33 cooperates with the cold plate 36 to limit the battery module 1a.

[0042] Furthermore, in some embodiments, the pull plate structure 33 is bent toward the side where at least one of the first surface 30c and the second surface 30d is located, so as to form a connection surface for limiting the battery module 1a on at least any side of the pull plate structure 33. The pull plate structure 33 can be bent toward the side where the first surface 30c is located or the side where the second surface 30d is located, or can be bent toward both the side where the first surface 30c is located and the side where the second surface 30d is located.

[0043] In some embodiments, the side surface includes a first side surface 30 a and a second side surface 30 b that are adjacently disposed, and the pull plate structure 33 connects the first side surface 30 a and / or the second side surface 30 b to limit the battery module 1 a together with the cold plate 36 . For example, when the pull plate structure 33 is only connected to the first side surface 30a, the pull plate structure 33 can be bent toward the side of any surface of the first surface 30c or the second surface 30d, or it can be partially bent toward the side of the first surface 30c and the other part toward the side of the second surface 30d; when the pull plate structure 33 is connected to both the first side surface 30a and the second side surface 30b, the part of the pull plate structure 33 connected to the first side surface 30a and the part of the pull plate structure 33 connected to the second side surface 30b can be arranged in the same direction or in different directions, or the part of the pull plate structure 33 connected to the first side surface 30a can be partially bent toward the side of the first surface 30c and the other part can be bent toward the side of the second surface 30d, that is, as long as the pull plate structure 33 is connected to the cold plate 36 to play a limiting role on the battery module 1a, the user can adjust the connection position of the pull plate structure 33 and its bending direction relative to the surface of the cold plate 36 according to actual product requirements.

[0044] In other embodiments, at least one pulling plate structure 33 is connected to two opposite sides of the cold plate 36 to form limiting surfaces for limiting the movement of the battery module 1a with the opposite sides of the cold plate 36, so that the battery module 1a is stably located between the pulling plate structure 33 and the cold plate 36.

[0045] In some embodiments, the battery pack 1 includes a battery module 1a and the aforementioned liquid cooling plate 30, please refer to Figure 1 and Figure 2 The battery module 1a is installed on at least one of the first surface 30c and the second surface 30d. In this way, the liquid cooling plate 30 can cool the battery module 1a. Since the battery pack 1 adopts all the technical solutions of all the embodiments of the above-mentioned liquid cooling plate 30, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0046] Further, reference can be made to Figure 2 and Figure 5 The battery module 1a includes a first battery module 10 , and the battery pack 1 also includes a connecting pull plate 14 . The first battery module 10 is connected to the first surface 30c . The connecting pull plate 14 is connected to the pull plate structure 33 to limit the first battery module 10 together with the cold plate 36 .

[0047] Specifically, the connecting pull plate 14 is connected to the pull plate structure 33, so that a limiting surface that hinders the first battery module 10 from sliding along the first surface 30c is formed on the side of the cold plate 36, so that the first battery module 10 can be stably arranged on the first surface 30c, thereby ensuring the connection stability between the first battery module 10 and the liquid cold plate 30, and preventing the first battery module 10 from sliding along the first surface 30c to separate from the first surface 30c. Furthermore, during the use of the battery pack 1, the liquid cold plate 30 can exert its cooling effect and continuously cool the first battery module 10, so that the battery pack 1 has a stable heat dissipation capacity. At the same time, because the first battery module 10 can be cooled in time, the first battery module 10 will not be over-discharged due to excessive temperature, thereby avoiding the reduction of the service life of the first battery module 10. At the same time, to a certain extent, the battery pack 1 has a longer service life.

[0048] Please refer to Figure 1 and Figure 2 In some embodiments, a thermally conductive adhesive layer 40 is provided between the first battery module 10 and the first surface 30c, and the first battery module 10 can be directly connected to the first surface 30c through the thermally conductive adhesive layer 40. In this way, the thermally conductive medium serves as the thermally conductive medium between the first battery module 10 and the cold plate 36, which can enhance the heat conduction effect between the first battery module 10 and the first surface 30c, and enhance the cooling effect of the liquid cold plate 30 on the first battery module 10, thereby enhancing the heat dissipation effect of the battery pack 1; in addition, the thermally conductive adhesive layer 40 can also provide a certain bonding force, so that the battery module 1a can be bonded to the first surface 30c, and while enhancing the heat dissipation effect of the liquid cold plate 30 on the first battery module 10, it can also enhance the connection strength between the liquid cold plate 30 and the first battery module 10 to a certain extent, so that the first battery module 10 can be stably arranged on the first surface 30c and maintain thermal contact with the liquid cold plate 30.

[0049] Among them, you can refer to Figure 5 In some embodiments, in order to enhance the connection strength between the first battery module 10 and the liquid cooling plate 30, a cover plate 11 is provided on the surface of the first battery module 10, and a connecting side plate 12 is provided on the side, wherein one side of the connecting side plate 12 is used to connect to the pull plate structure 33, and the other side is used to connect to the edge of the cover plate 11. In this way, in the thickness direction of the first battery module 10, the cover plate 11 and the cold plate 36 jointly limit the first battery module 10 to ensure the thermal conductivity effect between the first battery module 10 and the cold plate 36.

[0050] In some embodiments, the cover plate 11 is bonded to the surface of the first battery module 10 .

[0051] Further, please refer to Figure 1In some embodiments, a connecting side plate 21 may be further provided. The connecting side plate 21 and the connecting side plate 12 are arranged adjacent to each other to connect the adjacent sides of the cold plate 36. The aforementioned embodiment may be referred to, that is, the connecting side plate 21 is connected to the second side 30 b, and the connecting side plate 12 is connected to the first side 30 a. Thus, corresponding plates are provided in the circumferential direction of the first battery module 10, which together with the cover plate 11 and the cold plate 36 limit the first battery module 10.

[0052] Furthermore, in order to ensure the connection strength between the cover plate 11 and the first battery module 10 , a structural adhesive layer 11 a may be provided between the cover plate 11 and the first battery module 10 .

[0053] Please continue to refer to Figure 1 and Figure 2 Further, in some embodiments, the battery module 1a further includes a second battery module 20, a battery tray 50 and a connecting side plate 12, the opposite sides of the second battery module 20 are respectively connected to the second surface 30d and the battery tray 50, and the opposite sides of the connecting side plate 12 are respectively connected to the side surface and the battery tray 50. Among them, the battery tray 50 is used to provide the support required by the second battery module 20, the connecting side plate 12 and the cold plate 36 jointly limit the second battery module 20, and the battery tray 50 can be stably connected to the cold plate 36 through the connecting side plate 12, so that the second battery module 20 can stably thermally contact the cold plate 36.

[0054] Please refer to Figure 5 In some embodiments, when the battery pack 1 is installed in a charging device, the first battery module 10, the liquid cooling plate 30, and the second battery module 20 are stacked in sequence in the gravity direction of the battery pack 1. At this time, the battery tray 50 can support the second battery module 20 to stably thermally contact the second surface 30d of the liquid cooling plate 30. The liquid cooling plate 30 is sandwiched between the first battery module 10 and the second battery module 20. The heat of the first battery module 10 is mainly transferred to the low-temperature liquid through the first surface 30c, and the heat of the second battery module 20 is mainly transferred to the low-temperature liquid through the second surface 30d. The liquid cooling plate 30 realizes cooling of multiple battery modules 1a, that is, the liquid cooling plate 30 mentioned in the present application can be applied to the battery pack 1 with multiple battery modules 1a.

[0055] It should be noted that the number and position of the battery modules 1a can be adjusted according to the actual needs of the user. Figure 1 In the illustrated embodiment, the number of first battery modules 10 connected to the first surface 30c of the liquid cooling plate 30 is different from the number of second battery modules 20 connected to the second surface 30d. In other embodiments, the number of first battery modules 10 may be greater than the number of second battery modules 20, or may be equal to the number of second battery modules 20. No excessive constraints are imposed in the present application.

[0056] Furthermore, a thermally conductive adhesive layer 40 is provided between the second battery module 20 and the second surface 30d. In this way, the thermally conductive medium serves as a thermally conductive medium between the second battery module 20 and the cold plate 36, which can enhance the heat conduction effect between the second battery module 20 and the second surface 30d, and enhance the cooling effect of the liquid cold plate 30 on the second battery module 20, thereby enhancing the heat dissipation effect of the battery pack 1; in addition, the thermally conductive adhesive layer 40 can also provide a certain bonding force, so that the battery module 1a can be bonded to the second surface 30d, which enhances the heat dissipation effect of the liquid cold plate 30 on the second battery module 20, and can also enhance the connection strength between the liquid cold plate 30 and the second battery module 20 to a certain extent, so that the second battery module 20 can be stably arranged on the second surface 30d and maintain thermal contact with the liquid cold plate 30.

[0057] Please refer to Figure 2 In some embodiments, in order to prevent the first battery module 10 from being too heavy and causing the liquid cooling plate 30 to be compressed and deformed, a connecting beam 13 is provided between the first battery module 10 and the second battery module 20. The connecting beam 13 can connect the first battery module 10 to the battery tray 50, so as to transfer the weight of the first battery module 10 to the battery tray 50 to a certain extent, thereby reducing the pressure of the first battery module 10 on the liquid cooling plate 30, so that the battery pack 1 has a stable cooling function, thereby ensuring the heat dissipation effect of the battery pack 1.

[0058] Please refer to Figure 1 In some embodiments, the battery pack 1 further includes a protective plate 51, which is connected to the surface of the battery tray 50 away from the second battery module 20. When the battery pack 1 is installed on an electrical device, the protective plate 51 can protect the internal structure of the battery pack 1. When foreign objects approach the battery pack 1, the protective plate 51 can prevent the foreign objects from directly touching the internal structure of the battery pack 1, thereby protecting the internal structure of the battery pack 1 and extending the service life of the battery pack 1 to a certain extent.

[0059] This application also mentions an electrical device equipped with the battery pack 1, which can be referenced Figure 6 A battery compartment 2a is provided on the device body 2 of the electrical device, and the above-mentioned battery package is arranged in the battery compartment 2a to provide electrical energy to the electrical device. Since the electrical device adopts all the technical solutions of all the embodiments of the above-mentioned battery pack 1, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0060] In some specific embodiments, the electrical equipment is a vehicle. When the battery pack 1 is installed on the vehicle, the guard plate 51 is exposed on the outside of the frame. During the driving of the vehicle, foreign objects such as stones, dust, and water will be lifted up as the vehicle drives, and thus move close to the battery pack 1. At this time, the guard plate 51 can prevent the stones from entering the interior of the battery pack 1, that is, it can maintain the cleanliness of the interior of the battery pack 1, and can also protect the internal structure of the battery pack 1 from being damaged by foreign objects, thereby extending the service life of the battery pack 1 and reducing the frequency of replacing the battery pack 1 of the vehicle. For users, the user's maintenance cost is reduced. For merchants, by improving the protection of the battery, the performance of the battery is improved to a certain extent, thereby improving the market competitiveness of the vehicle and enhancing the product revenue of the vehicle.

[0061] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0063] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid cooling plate, characterized in that: It includes a cold plate and a pull plate structure, the cold plate includes a first surface and a second surface arranged opposite to each other and a side surface connecting the first surface and the second surface, at least one surface of the first surface and the second surface is used to install a battery module, the pull plate structure is connected to the side surface or the edge area of ​​the first surface or the second surface of the cold plate, and extends out of the corresponding first surface or the second surface, and the pull plate structure and the cold plate are used together to limit at least one of the battery modules.

2. The liquid cooling plate according to claim 1, characterized in that: The cold plate includes a flat plate and a flow channel plate, wherein the flow channel plate is stacked on one side of the flat plate; the flat plate and the side wall surface of the flow channel plate together form the side surface of the cold plate, and when the pull plate structure is connected to the side surface, the pull plate structure is connected to the side wall surface of the flat plate and / or the side wall surface of the flow channel plate.

3. The liquid cooling plate according to claim 2, characterized in that: The pull plate structure is connected to the side wall surface of the flow channel plate, and the pull plate structure is parallel to the side wall surface of the flow channel plate.

4. The liquid cooling plate according to claim 3, characterized in that: The pulling plate structure is bent toward a side of at least one of the first surface and the second surface.

5. The liquid cooling plate according to claim 1, characterized in that: When the pull plate structure is connected to the side surface, at least one pull plate structure is connected to both opposite side surfaces of the cold plate.

6. The liquid cooling plate according to claim 1, characterized in that: When the pull plate structure is connected to the side surface, the side surface includes a first side surface and a second side surface that are adjacently arranged, and the pull plate structure connects the first side surface and / or the second side surface.

7. A battery pack, characterized in that: It comprises a battery module and the liquid cooling plate according to any one of claims 1 to 6, wherein the battery module is mounted on at least one of the first surface and the second surface.

8. The battery pack according to claim 7, characterized in that: The battery module includes a first battery module, and the battery pack also includes a connecting pull plate. The first battery module is located on the first surface, and the connecting pull plate is connected to the pull plate structure to limit the first battery module together with the cold plate.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes a cover plate. The cold plate and the cover plate are respectively disposed on opposite sides of the first battery module, and the cold plate and the cover plate are respectively connected to opposite sides of the connecting pull plate to jointly limit the first battery module.

10. The battery pack according to claim 8, characterized in that: A heat-conducting adhesive layer is provided between the first battery module and the first surface.

11. The battery pack according to any one of claims 8 to 10, characterized in that: The battery module also includes a second battery module, which is located on the second surface. The battery pack also includes a battery tray and a connecting side plate, wherein the battery tray is located on a side of the second battery module away from the liquid cooling plate, and opposite sides of the connecting side plate are respectively connected to the side surface and the battery tray.

12. The battery pack according to claim 11, characterized in that: A thermally conductive adhesive layer is provided between the second battery module and the second surface.

13. The battery pack according to claim 11, characterized in that: The battery pack further includes a protective plate connected to a surface of the battery tray away from the second battery module.

14. An electrical device, characterized in that: The electrical device is equipped with a battery pack according to any one of claims 7 to 13, and the battery pack is used to supply power to the electrical device.

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