Battery cell module

Abstract

The utility model provides a battery cell module, the battery cell module comprises a battery cell group and a liquid cooling assembly, a plurality of plate bodies of the liquid cooling assembly are encircled to form a box body, the box body is provided with an accommodating cavity, and the accommodating cavity is used for accommodating the battery cell group; in the plurality of plate bodies, at least two adjacent plate bodies on different surfaces are provided with liquid cooling flow channels, and the liquid cooling flow channels are communicated. The battery pack cooling device solves the problems that a battery pack cooling mode in the prior art cannot effectively cool a plurality of battery cells with higher heights, so that the tops of the plurality of battery cells are seriously heated, and a thermal runaway phenomenon is easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack liquid cooling, and in particular to a battery core module. Background Art

[0002] With the development of electric energy storage technology and the demand of the new energy market, low-capacity energy storage systems can no longer meet customer needs. As a result, high-capacity energy storage systems have emerged. However, high-capacity energy storage systems increase the volume of each battery cell in the battery module, which greatly increases the difficulty of thermal management of existing large-volume battery cells.

[0003] The existing cooling methods for battery cell modules are usually air cooling technology and liquid cooling technology. Among them, air cooling technology has a certain degree of delay in the heat dissipation and cooling of the battery cells, slow cooling speed, and low heat dissipation efficiency. In addition, when large battery cells are used, the large battery cells are taller and have longer heat conduction paths, which are not easy to dissipate heat and are prone to bulging. The bulging battery cells are prone to compressing the air cooling channels, resulting in further reduction in the air cooling efficiency and uneven overall temperature distribution of the battery cells and battery packs. This can easily cause thermal runaway of the battery pack, triggering decomposition of raw materials in the battery cells and accelerating the failure of the battery cells, endangering the safety of the entire battery pack and even the entire energy storage system.

[0004] In addition, some existing battery packs use liquid cooling technology, and liquid cooling technology usually involves setting a liquid cooling plate at the bottom of the box to cool the battery cells. However, when the battery cells are high, the liquid cooling plate at the bottom cannot cool the higher positions of the battery cells, causing the top of the battery cells to heat up severely and making thermal runaway prone to occur. Utility Model Content

[0005] The main purpose of the present invention is to provide a battery cell module to solve the problem that the cooling method of the battery pack in the prior art cannot effectively cool multiple battery cells with high heights, resulting in serious heating of the tops of multiple battery cells and prone to thermal runaway.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a battery cell module is provided, comprising a battery cell group and a liquid cooling assembly, wherein the battery cell group comprises a plurality of battery cells; the liquid cooling assembly comprises a plurality of plates, and the plurality of plates are arranged to form a box body, the box body has a accommodating cavity, and the accommodating cavity is used to accommodate the battery cell group; among the plurality of plates, at least two adjacent plates on different surfaces have liquid cooling channels, and the liquid cooling channels are all connected.

[0007] In an exemplary embodiment, at least one of the plate bodies having the liquid-cooling channel also has a liquid inlet, which is connected to the liquid-cooling channel on the same plate body having it, and at least one of the remaining plate bodies having the liquid-cooling channel also has a liquid drain, which is connected to the liquid-cooling channel on the same plate body having it.

[0008] In an exemplary embodiment, the plurality of plates are detachably connected.

[0009] In an exemplary embodiment, at least three plates located on three consecutive different surfaces of the box body have liquid cooling channels, the plate located in the middle of the three plates with liquid cooling channels has a drain port, and the two plates located on both sides of the three plates with liquid cooling channels each have a liquid inlet.

[0010] In an exemplary embodiment, the two liquid inlets and the two liquid outlets are located on the same side of the corresponding plates.

[0011] In an exemplary embodiment, the liquid cooling channel includes a bottom plate channel and a side plate channel, and the multiple plate bodies include a bottom plate and a side plate, the bottom plate has a bottom plate channel, a drain port connected to the bottom plate channel, and two bottom plate connecting ports; the side plate is connected to the bottom plate, and the side plate has a side plate channel, a liquid inlet connected to the side plate channel, and a side plate connecting port; wherein, there are two side plates, the two side plates are arranged opposite to each other and are both connected to the bottom plate to form a U-shaped liquid cooling structure, and the two side plate connecting ports are respectively connected to the two bottom plate connecting ports.

[0012] In an exemplary embodiment, the drain port and the two bottom plate connecting ports are respectively located at the two ends of the bottom plate in the length direction, and the two bottom plate connecting ports are respectively located at the two ends of the bottom plate in the width direction; the liquid inlet and the side plate connecting port are respectively located at the two ends of the side plate in the length direction.

[0013] In an exemplary embodiment, the drain port is located on the geometric center line of the length direction of the bottom plate, and the two bottom plate communication ports are symmetrically arranged with respect to the geometric center line of the length direction of the bottom plate.

[0014] In an exemplary embodiment, the liquid inlet is located on the geometric center line of the length direction of the side plate, and the side plate communication port is located on one side of the geometric center line of the length direction of the side plate and is arranged close to the bottom plate.

[0015] In an exemplary embodiment, the plurality of plates include two end plates, which are oppositely arranged at two ends of the liquid cooling structure to form a box body together with the liquid cooling structure, and there are no liquid cooling channels on the two end plates.

[0016] In an exemplary embodiment, one side surface of the bottom plate in the thickness direction is adhesively connected to the battery cell group, and the two ends of the bottom plate in the length direction are detachably connected to the two end plates; and / or, one side surface of the side plate in the thickness direction is adhesively connected to the battery cell group, and the two ends of the side plate in the length direction are detachably connected to the two end plates.

[0017] By applying the technical solution of the present invention, a battery cell module with a liquid cooling assembly is provided, wherein the liquid cooling assembly includes a plurality of plates, which are arranged to form a box body, and the box body has a accommodating cavity, which is used to accommodate the battery cell group; among the plurality of plates, at least two adjacent plates on different surfaces have liquid cooling channels, and the liquid cooling channels are all connected.

[0018] The present application arranges a plurality of plates to form a box, so that the battery cell group is located in the accommodating cavity of the box, and the plates located on the side surround the battery cell group and limit it in the accommodating cavity to achieve the purpose of fixing the battery cell group, thereby solving the problem of fixing the battery cell group by steel belts in the prior art; in addition, since at least two adjacent plates on different surfaces have liquid cooling channels, and each liquid cooling channel is connected, when the plate located at the bottom of the box has a liquid cooling channel, the plate adjacent to it is located on the side of the box, thereby cooling and dissipating the heat in the height direction of the battery cell group, ensuring that the battery cell group can operate in a normal temperature environment; when the two plates located on two different sides of the box both have liquid cooling channels, the two plates on two different sides of the box can achieve cooling and dissipating the heat in the height direction of the battery cell group, ensuring that the battery cell group can operate in a normal temperature environment; when the plate located at the top of the box has a liquid cooling channel, the plate adjacent to it is located on the side of the box, thereby cooling and dissipating the heat in the height direction of the battery cell group, ensuring that the battery cell group can operate in a normal temperature environment.

[0019] In summary, the multiple plates provided in the present application are used to form a box. At the same time, at least two plates located on different adjacent surfaces of the box have liquid cooling channels, and the liquid cooling channels are all connected, ensuring the cooling and heat dissipation of the battery cell group in the height direction, ensuring that the battery cell group can operate in a normal temperature environment, so that the battery cells in the battery cell group will not suffer from parameter thermal runaway due to the inability to be cooled in time in the height direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic structural diagram of a battery cell module according to an optional embodiment of the present utility model is shown;

[0022] Figure 2 Shown Figure 1 Schematic diagram of the decomposition structure of the battery module;

[0023] Figure 3 Shown Figure 1 Schematic diagram of the box structure of the battery module;

[0024] Figure 4 Shown Figure 1 A schematic cross-sectional view of the battery module at the connection point between the bottom connecting structure of the bottom plate and the side plate connecting structure of the side plate;

[0025] Figure 5 Shown Figure 1 Schematic diagram of the structure in which the base plate and two side plates of the battery cell module form a U-shaped liquid cooling structure.

[0026] The above drawings include the following reference numerals:

[0027] 10. Battery cell group;

[0028] 20. Liquid cooling assembly; 21. Plate body; 211. Bottom plate; 2111. Liquid drain port; 2112. Bottom plate connecting port; 2113. Bottom plate water spout; 2114. Bottom plate connecting structure; 2114a. Bottom connecting channel; 212. Side plate; 2121. Liquid inlet; 2122. Side plate connecting port; 2123. Side plate water spout; 2124. Side plate connecting structure; 2124a. Side plate connecting channel; 213. End plate;

[0029] 1. Box body; 100. Accommodation cavity. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In order to solve the problem that the cooling method of the battery pack in the prior art cannot effectively cool multiple battery cells with a high height, resulting in serious heating of the tops of the multiple battery cells and prone to thermal runaway, the present invention provides a battery cell module.

[0032] like Figures 1 to 5 As shown, the battery cell module includes a battery cell group 10 and a liquid cooling assembly 20, wherein the battery cell group 10 includes multiple battery cells; the liquid cooling assembly 20 includes multiple plates 21, and the multiple plates 21 are arranged to form a box 1, and the box 1 has a accommodating cavity 100, which is used to accommodate the battery cell group 10; among the multiple plates 21, at least two adjacent plates 21 on different surfaces have liquid cooling channels, and each liquid cooling channel is connected.

[0033] By applying the technical solution of the present invention, a battery cell module with a liquid cooling assembly 20 is provided, wherein the liquid cooling assembly 20 includes a plurality of plates 21, and the plurality of plates 21 are arranged to form a box 1, and the box 1 has a accommodating cavity 100, which is used to accommodate the battery cell group 10; among the plurality of plates 21, at least two adjacent plates 21 on different surfaces have liquid cooling channels, and the liquid cooling channels are all connected.

[0034] The present application arranges a plurality of plates 21 to form a box body 1, so that the battery cell group 10 is located in the accommodating cavity 100 of the box body 1, and the plates 21 located on the side surround the battery cell group 10 and limit it in the accommodating cavity 100, so as to achieve the purpose of fixing the battery cell group 10, and solves the problem of fixing the battery cell group 10 by steel belt in the prior art; in addition, since at least two adjacent plates 21 on different surfaces have liquid cooling channels, and each liquid cooling channel is connected, when the plate 21 located at the bottom of the box body 1 has a liquid cooling channel, the plate 21 adjacent to it is located on the side of the box body 1, thereby cooling the battery cell group 10 in the height direction. Heat dissipation ensures that the battery cell group 10 can operate in a normal temperature environment; when the two plates 21 located on two different sides of the box body 1 both have liquid-cooling channels, the two plates 21 on two different sides of the box body 1 can both cool and dissipate heat in the height direction of the battery cell group 10, ensuring that the battery cell group 10 can operate in a normal temperature environment; when the plate 21 located at the top of the box body 1 has a liquid-cooling channel, the plate 21 adjacent to it is located on the side of the box body 1, thereby cooling and dissipating heat in the height direction of the battery cell group 10, ensuring that the battery cell group 10 can operate in a normal temperature environment.

[0035] In summary, the multiple plates 21 provided in the present application are used to enclose a box body 1. At the same time, at least two plates 21 located on different adjacent surfaces of the box body 1 have liquid cooling channels, and the liquid cooling channels are all connected, ensuring that the battery cell group 10 is cooled and dissipated in the height direction, ensuring that the battery cell group 10 can operate in a normal temperature environment, so that the battery cells in the battery cell group 10 will not suffer from parameter thermal runaway due to the inability to be cooled in time in the height direction.

[0036] like Figures 1 to 3 、 Figure 5 As shown, at least one of the plate bodies 21 having the liquid-cooling channel also has a liquid inlet 2121, which is connected to the liquid-cooling channel on the same plate body 21 having it, and at least one of the remaining plate bodies 21 having the liquid-cooling channel also has a liquid discharge port 2111, which is connected to the liquid-cooling channel on the same plate body 21 having it.

[0037] like Figure 3 As shown, the box body 1 is an open box body.

[0038] It should be noted that, in the present application, the plurality of plates 21 are all detachably connected, which greatly improves the convenience of installing and removing the plurality of plates 21.

[0039] It should be noted that in the present application, at least three plates 21 located on three different consecutive surfaces of the box body 1 have liquid cooling channels, the plate 21 located in the middle of the three plates 21 with liquid cooling channels has a liquid drain port 2111, and the two plates 21 located on both sides of the three plates 21 with liquid cooling channels each have a liquid inlet 2121. The two liquid inlets 2121 and the liquid drain port 2111 are both located on the same side of the corresponding plates 21. In this way, it is ensured that at least the three plates 21 located on three different consecutive surfaces of the box body 1 can cool and dissipate heat for each battery cell in the battery cell group 10 as much as possible, ensuring that each battery cell in the battery cell group 10 can operate in a suitable temperature environment, which is conducive to improving operating efficiency and preventing thermal runaway of the battery pack.

[0040] This application provides a specific embodiment for illustration, of course, there are other embodiments, this application is based on Figure 3 and Figure 5 Specifically, as Figure 3 and Figure 5 As shown, the liquid cooling flow channel includes a bottom plate flow channel and a side plate flow channel, and the multiple plate bodies 21 include a bottom plate 211 and a side plate 212, wherein the bottom plate 211 has a bottom plate flow channel and a drain port 2111 and two bottom plate connecting ports 2112 connected to the bottom plate flow channel; the side plate 212 is connected to the bottom plate 211, and the side plate 212 has a side plate flow channel and a liquid inlet 2121 and a side plate connecting port 2122 connected to the side plate flow channel; wherein there are two side plates 212, the two side plates 212 are arranged opposite to each other and are both connected to the bottom plate 211 to form a U-shaped liquid cooling structure, and the two side plate connecting ports 2122 are respectively connected to the two bottom plate connecting ports 2112.

[0041] It should be noted that, in the above-mentioned embodiment, the plurality of plates 21 are arranged into a structural form including a bottom plate 211 and a side plate 212. At the same time, there are two side plates 212, the two side plates 212 are arranged opposite to each other and are both connected to the bottom plate 211, and the two side plate connecting ports 2122 are respectively connected to the two bottom plate connecting ports 2112, thereby ensuring the reliability of the connection between the bottom plate flow channel and the side plate flow channel. In addition, liquid coolant is injected into the side plate flow channel through the liquid inlet 2121 on the side plate 212, and flows into the bottom plate flow channel through the side plate connecting ports 2122 and the bottom plate connecting ports 2112. In the process of the liquid coolant flowing through the side plate flow channel, the heat in the height direction of the side of the battery cell group 10 is taken away, and in the process of the liquid coolant flowing through the bottom plate flow channel, the heat on the bottom of the battery cell group 10 is taken away, thereby achieving effective cooling of each battery cell of the battery cell group 10, thereby ensuring that each battery cell can operate in a suitable temperature environment and ensuring the operational reliability of the battery pack.

[0042] Furthermore, if Figure 2 and Figure 5 As shown, the drain port 2111 and the two bottom plate communication ports 2112 are located at both ends of the bottom plate 211 in the longitudinal direction, and the two bottom plate communication ports 2112 are located at both ends of the bottom plate 211 in the width direction; the liquid inlet 2121 and the side plate communication ports 2122 are located at both ends of the side plate 212 in the longitudinal direction. This ensures the reliability of the connection between the bottom plate flow channel of the bottom plate 211 and the side plate flow channel of the side plate 212, and allows the liquid coolant to flow quickly into the bottom plate flow channel and / or the side plate flow channel in the shortest possible transition, thereby achieving the purpose of quickly dissipating heat from each battery cell in the battery cell group 10 and ensuring the reliability of heat dissipation from each battery cell.

[0043] like Figure 2 and Figure 5 As shown, the drain port 2111 is located on the geometric centerline of the length of the bottom plate 211, and the two bottom plate communication ports 2112 are symmetrically arranged about the geometric centerline of the length of the bottom plate 211. This ensures uniform distribution of the liquid coolant in the bottom plate flow channel, thereby ensuring uniform heat dissipation to the bottom of each battery cell in the battery cell group 10, and preventing the occurrence of battery pack bulging caused by localized high heat due to uneven heat dissipation.

[0044] like Figure 2 and Figure 5As shown, the liquid inlet 2121 is located on the geometric centerline of the length direction of the side plate 212, and the side plate connecting port 2122 is located on one side of the geometric centerline of the length direction of the side plate 212 and is arranged close to the bottom plate 211. In this way, since the side plate 212 is arranged vertically, by locating the liquid inlet 2121 on the geometric centerline of the length direction of the side plate 212, the uniform distribution of the liquid coolant flowing into the side plate flow channel is ensured. In addition, by locating the side plate connecting port 2122 on one side of the geometric centerline of the length direction of the side plate 212, the liquid coolant can flow into the bottom flow channel as quickly as possible under the action of gravity, thereby ensuring the circulation reliability of the liquid coolant and the uniform distribution of the liquid coolant.

[0045] like Figures 2 to 5 As shown, the bottom plate 211 includes a bottom plate body, a bottom plate water nozzle 2113, and a bottom plate connecting structure 2114. The bottom plate water nozzle 2113 and the bottom plate connecting structure 2114 are both arranged on the bottom plate body, wherein the bottom plate body has a bottom plate flow channel, the first end of the bottom plate water nozzle 2113 is connected to the outlet of the bottom plate flow channel, the second end of the bottom plate water nozzle 2113 forms the above-mentioned drain port 2111, and the bottom plate connecting structure 2114 has a bottom connecting channel 2114a, the first end of the bottom connecting channel 2114a is connected to the inlet of the bottom plate flow channel, and the second end of the bottom connecting channel 2114a forms the above-mentioned bottom plate connecting port 2112.

[0046] like Figures 2 to 5 As shown, the side plate 212 includes a side plate body, a side plate water nozzle 2123, and a side plate connecting structure 2124. The side plate water nozzle 2123 and the side plate connecting structure 2124 are both arranged on the side plate body, wherein the side plate body has a side plate flow channel, the first end of the side plate water nozzle 2123 is connected to the inlet of the side plate flow channel, the second end of the side plate water nozzle 2123 forms the above-mentioned liquid inlet 2121, and the side plate connecting structure 2124 has a side plate connecting channel 2124a, the first end of the side plate connecting channel 2124a is connected to the outlet of the side plate flow channel, and the second end of the side plate connecting channel 2124a forms the above-mentioned side plate connecting port 2122.

[0047] like Figure 2 and Figure 3 As shown, the multiple plates 21 include two end plates 213, which are positioned opposite each other at the ends of the liquid-cooling structure to form a box body with the liquid-cooling structure. Neither end plate 213 has a liquid-cooling flow channel. This ensures that the two end plates 213, the two side plates 212, and the bottom plate 211 can form an open box body 1, thereby providing the box body 1 with a receiving cavity 100, ensuring reliable accommodation of the battery cell group 10 and providing protection for the battery cell group 10.

[0048] It should be noted that, in an optional embodiment of the present application, one side surface of the bottom plate 211 in the thickness direction is bonded to the battery cell group 10, and the two ends of the bottom plate 211 in the length direction are detachably connected to the two end plates 213; and / or, one side surface of the side plate 212 in the thickness direction is bonded to the battery cell group 10, and the two ends of the side plate 212 in the length direction are detachably connected to the two end plates 213. In this way, while ensuring the installation reliability of the bottom plate 211 and the installation reliability of the side plate 212, the overall structural strength of the battery cell module is greatly improved, and damage to the battery cell module in a vibration environment can be avoided, thereby ensuring the service life of the battery cell module.

[0049] Furthermore, one side surface of the bottom plate 211 in the thickness direction is bonded to the battery cell group 10 by a thermally conductive structural adhesive, which ensures the connection reliability between the two while also playing a role in heat conduction.

[0050] Furthermore, one side surface of the side plate 212 in the thickness direction is bonded to the battery cell group 10 by a thermally conductive structural adhesive, which ensures the connection reliability between the two while also playing a role in heat conduction.

[0051] By applying the technical solution of the present invention, a battery cell module with a liquid cooling assembly 20 is provided, wherein the liquid cooling assembly 20 includes a plurality of plates 21, and the plurality of plates 21 are arranged to form a box 1, and the box 1 has a accommodating cavity 100, which is used to accommodate the battery cell group 10; among the plurality of plates 21, at least two adjacent plates 21 on different surfaces have liquid cooling channels, and the liquid cooling channels are all connected.

[0052] The present application arranges a plurality of plates 21 to form a box body 1, so that the battery cell group 10 is located in the accommodating cavity 100 of the box body 1, and the plates 21 located on the side surround the battery cell group 10 and limit it in the accommodating cavity 100, so as to achieve the purpose of fixing the battery cell group 10, and solves the problem of fixing the battery cell group 10 by steel belt in the prior art; in addition, since at least two adjacent plates 21 on different surfaces have liquid cooling channels, and each liquid cooling channel is connected, when the plate 21 located at the bottom of the box body 1 has a liquid cooling channel, the plate 21 adjacent to it is located on the side of the box body 1, thereby cooling the battery cell group 10 in the height direction. Heat dissipation ensures that the battery cell group 10 can operate in a normal temperature environment; when the two plates 21 located on two different sides of the box body 1 both have liquid-cooling channels, the two plates 21 on two different sides of the box body 1 can both cool and dissipate heat in the height direction of the battery cell group 10, ensuring that the battery cell group 10 can operate in a normal temperature environment; when the plate 21 located at the top of the box body 1 has a liquid-cooling channel, the plate 21 adjacent to it is located on the side of the box body 1, thereby cooling and dissipating heat in the height direction of the battery cell group 10, ensuring that the battery cell group 10 can operate in a normal temperature environment.

[0053] In summary, the multiple plates 21 provided in the present application are used to enclose a box body 1. At the same time, at least two plates 21 located on different adjacent surfaces of the box body 1 have liquid cooling channels, and the liquid cooling channels are all connected, ensuring that the battery cell group 10 is cooled and dissipated in the height direction, ensuring that the battery cell group 10 can operate in a normal temperature environment, so that the battery cells in the battery cell group 10 will not suffer from parameter thermal runaway due to the inability to be cooled in time in the height direction.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0058] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery cell module, characterized in that: include: A battery cell group (10), the battery cell group (10) comprising a plurality of battery cells; A liquid cooling assembly (20), the liquid cooling assembly (20) comprising a plurality of plates (21), the plurality of plates (21) being arranged to form a box (1), the box (1) having a receiving cavity (100), the receiving cavity (100) being used to receive the battery cell group (10); Among the plurality of plate bodies (21), at least two adjacent plate bodies (21) on different surfaces have liquid cooling channels, and the liquid cooling channels are all connected.

2. The battery cell module according to claim 1, characterized in that: At least one of the plate bodies (21) having the liquid-cooling channel further comprises a liquid inlet (2121), wherein the liquid inlet (2121) is connected to the liquid-cooling channel on the same plate body (21) having the liquid-cooling channel, and at least one of the remaining plate bodies (21) having the liquid-cooling channel further comprises a liquid discharge port (2111), wherein the liquid discharge port (2111) is connected to the liquid-cooling channel on the same plate body (21) having the liquid-cooling channel.

3. The battery cell module according to claim 1, characterized in that: The plurality of plates (21) are detachably connected.

4. The battery cell module according to claim 2, characterized in that: At least three of the plate bodies (21) located on three consecutive different surfaces of the box body (1) have the liquid cooling channel, the plate body (21) located in the middle of the three plate bodies (21) having the liquid cooling channel has the liquid discharge port (2111), and the two plate bodies (21) located on both sides of the three plate bodies (21) having the liquid cooling channel both have the liquid inlet port (2121).

5. The battery cell module according to claim 4, characterized in that: The two liquid inlets (2121) and the liquid outlet (2111) are both located on the same side of the corresponding plate bodies (21).

6. The battery cell module according to claim 1, characterized in that: The liquid cooling channel includes a bottom plate channel and a side plate channel, and the plurality of plates (21) include: A bottom plate (211), the bottom plate (211) having the bottom plate flow channel, a liquid discharge port (2111) communicating with the bottom plate flow channel, and two bottom plate communication ports (2112); A side plate (212), the side plate (212) being connected to the bottom plate (211), and the side plate (212) having a side plate flow channel, and a liquid inlet (2121) and a side plate communication port (2122) communicating with the side plate flow channel; There are two side plates (212), the two side plates (212) are arranged opposite to each other and are both connected to the bottom plate (211) to form a U-shaped liquid cooling structure, and the two side plate connecting ports (2122) are respectively connected to the two bottom plate connecting ports (2112).

7. The battery cell module according to claim 6, characterized in that: The liquid discharge port (2111) and the two bottom plate communication ports (2112) are respectively located at two ends of the bottom plate (211) in the length direction, and the two bottom plate communication ports (2112) are respectively located at two ends of the bottom plate (211) in the width direction; The liquid inlet (2121) and the side plate communication port (2122) are respectively located at two ends of the side plate (212) in the length direction.

8. The battery cell module according to claim 7, characterized in that: The liquid discharge port (2111) is located on the geometric center line of the length direction of the bottom plate (211), and the two bottom plate communication ports (2112) are symmetrically arranged with respect to the geometric center line of the length direction of the bottom plate (211).

9. The battery cell module according to claim 7, characterized in that: The liquid inlet (2121) is located on the geometric center line of the length direction of the side plate (212), and the side plate communication port (2122) is located on one side of the geometric center line of the length direction of the side plate (212) and is arranged close to the bottom plate (211).

10. The battery cell module according to claim 6, characterized in that: The plurality of plates (21) include: Two end plates (213), the two end plates (213) are relatively arranged at two ends of the liquid cooling structure to form a box body together with the liquid cooling structure, and the two end plates (213) are not provided with the liquid cooling channel.

11. The battery cell module according to claim 10, characterized in that: One side surface of the bottom plate (211) in the thickness direction is adhesively connected to the battery cell group (10), and both ends of the bottom plate (211) in the length direction are detachably connected to the two end plates (213); and / or, One side surface of the side plate (212) in the thickness direction is bonded to the battery cell group (10), and both ends of the side plate (212) in the length direction are detachably connected to the two end plates (213).

Images