Bearing structure of battery module, battery module and energy storage battery

Abstract

The utility model discloses a load-bearing structure of battery module, battery module and energy storage battery, the load-bearing structure of battery module includes: liquid cooling piece and load-bearing assembly, load-bearing assembly includes: load-bearing piece and support piece, liquid cooling piece is provided on one side of load-bearing piece, support piece is provided on the other side of load-bearing piece. The liquid cooling plate is arranged on one side of the bearing part, so that the bearing structure of the battery module has a heat dissipation function, and the supporting part is arranged on the other side of the bearing part, so that the battery module is convenient to move and transport, the liquid cooling part and the bearing part are convenient to integrate, the volume of the battery module can be saved, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a load-bearing structure of a battery module, a battery module and an energy storage battery. Background Art

[0002] At present, the demand for energy storage products is growing, and thus the capacity of energy storage products is getting larger and larger, and the charging and discharging rate is getting higher and higher. However, the liquid cooling plate and the load-bearing plate in the battery module occupy a large space, which makes the battery module too large and the cost is wasted. In addition, the liquid cooling plate and the load-bearing plate are not conducive to installation and transportation, which causes a waste of manpower. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a load-bearing structure of a battery module, which integrates a liquid cooling part and a load-bearing part, thereby saving the volume of the battery module and facilitating the transportation of the battery module by using a support part.

[0004] The utility model further provides a battery module.

[0005] The utility model further proposes an energy storage battery.

[0006] According to the load-bearing structure of the battery module of the utility model, it includes: a liquid cooling part and a load-bearing assembly, and the load-bearing assembly includes: a load-bearing part and a support part. The liquid cooling part is arranged on one side of the load-bearing part, and the support part is arranged on the other side of the load-bearing part.

[0007] According to the load-bearing structure of the battery module of the utility model, by arranging the liquid cooling plate on one side of the load-bearing member, the load-bearing structure of the battery module can have a heat dissipation function, and a supporting member is arranged on the other side of the load-bearing member to facilitate the movement and transportation of the battery module. The liquid cooling member and the load-bearing member are integrated, so as to save the volume of the battery module and further save costs.

[0008] In some examples of the present invention, the liquid cooling component and the load-bearing component are an integrally formed structure.

[0009] In some examples of the present invention, there are multiple support members, and the multiple support members are arranged at intervals on the other side of the load-bearing member.

[0010] In some examples of the present invention, the liquid cooling component includes: a shell and a plurality of liquid cooling mainboards, the plurality of liquid cooling mainboards are arranged in the shell at intervals, and the plurality of liquid cooling mainboards are connected to each other.

[0011] In some examples of the present invention, the shell is provided with a liquid through hole between two adjacent liquid-cooling mainboards, and a plurality of liquid-cooling mainboards are connected through the liquid through hole.

[0012] In some examples of the present invention, among the two adjacent liquid through ports, one is located on one side of the shell in the first direction, and the other is located on the other side of the shell in the first direction.

[0013] In some examples of the present invention, the liquid cooling mainboard is constructed in a flat plate shape.

[0014] In some examples of the present invention, the liquid cooling component is connected to the load-bearing component by welding; the load-bearing component and the plurality of supporting components are connected by welding.

[0015] The battery module according to the utility model comprises: a battery cell and the load-bearing structure of the battery module mentioned above, wherein the battery cell is arranged on the load-bearing structure.

[0016] In some examples of the present invention, the battery module further includes: a pressure plate, which is arranged on a side of the battery cell away from the load-bearing structure.

[0017] In some examples of the present invention, the battery module also includes: end plates, which are arranged on both sides of the battery cell in the second direction, and the end plates are connected between the load-bearing structure and the pressure plate, and the second direction is arranged perpendicular to the first direction.

[0018] In some examples of the present invention, the end plate is provided with a through hole, and the fastener passes through the through hole and is connected to the load-bearing structure.

[0019] In some examples of the present invention, an installation space is defined between the load-bearing structure, the pressure plate, and the end plate, and the battery cell is disposed in the installation space.

[0020] In some examples of the present invention, the battery module also includes: a plurality of heat conductive members, the plurality of heat conductive members are arranged at intervals in the installation space, and the plurality of heat conductive members are arranged in parallel with the end plate to divide the installation space into a plurality of battery cell cavities, and there are a plurality of battery cells, and the plurality of battery cells and the plurality of battery cell cavities are arranged in one-to-one correspondence.

[0021] In some examples of the present invention, the battery module further includes: a bracket, wherein the bracket is arranged on both sides of the battery cell in the first direction.

[0022] In some examples of the present invention, the battery module further includes: a connecting piece, a slot is provided on a side of the bracket close to the battery cell, and the connecting piece is provided in the slot.

[0023] In some examples of the present invention, the battery module further includes: a BMU module, wherein the BMU module is disposed on a side of the end plate away from the battery cell, and the BMU module is electrically connected to the connecting sheet.

[0024] The energy storage battery according to the utility model is characterized in that it comprises: a box body and the above-mentioned battery module, wherein the battery module is arranged in the box body.

[0025] In some examples of the present invention, a plurality of partitions are disposed in the box body, and the battery modules are respectively disposed on the plurality of partitions.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic structural diagram of a load-bearing structure of a battery module according to an embodiment of the utility model at a first angle;

[0029] Figure 2 is a schematic structural diagram of a load-bearing structure of a battery module according to an embodiment of the utility model from a second angle;

[0030] Figure 3 It is a schematic diagram of the structure of the battery module;

[0031] Figure 4 is a cross-sectional view of a battery module;

[0032] Figure 5 It is a structural diagram of an energy storage battery.

[0033] Reference numerals:

[0034] 1000. Energy storage battery;

[0035] 100, load-bearing structure of battery module; 110, liquid cooling component; 111, housing; 112, liquid cooling mainboard; 113, liquid through port; 120, load-bearing component; 121, load-bearing component; 122, support component;

[0036] 200, battery cell; 300, pressure plate; 400, end plate; 500, bracket; 600, connecting piece; 700, BMU module; 800, box body; 900, partition. DETAILED DESCRIPTION

[0037] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0038] Reference below Figure 1-Figure 5 The load-bearing structure 100 of a battery module according to an embodiment of the present invention is described, and the load-bearing structure 100 of the battery module is applied to an energy storage battery 1000. For example, a battery module.

[0039] like Figure 1 and Figure 2 As shown, the load-bearing structure 100 of the battery module according to the utility model includes: a liquid cooling part 110 and a load-bearing assembly 120, and the load-bearing assembly 120 includes: a load-bearing part 121 and a support part 122, the liquid cooling part 110 is arranged on one side of the load-bearing part 121, and the support part 122 is arranged on the other side of the load-bearing part 121. It can be understood that the liquid cooling part 110 and the load-bearing assembly 120 constitute the main body of the load-bearing structure 100 of the battery module, so that the load-bearing structure 100 of the battery module has the functions of heat dissipation and temperature reduction, and the load-bearing part 121 and the support part 122 constitute the main structure of the load-bearing assembly 120, for example, the load-bearing part 121 is made of aluminum material, so that the load-bearing capacity of the load-bearing part 121 can be improved.

[0040] Therefore, by setting the liquid cooling plate on one side of the load-bearing member 121, the load-bearing structure 100 of the battery module can have a heat dissipation function, and the support member 122 is set on the other side of the load-bearing member 121, so as to facilitate the movement and transportation of the battery module. The liquid cooling member and the load-bearing member are integrated, so as to save the volume of the battery module and thus save costs.

[0041] In particular, as shown in the figure, the liquid cooling component 110 and the load-bearing component 121 are an integrally formed structure, which facilitates the manufacture and installation of the liquid cooling component 110 and the load-bearing component 121, and can also improve the overall structural strength of the load-bearing structure 100 of the battery module, and reduce the volume of the load-bearing structure 100 of the battery module.

[0042] Alternatively, if Figure 2 As shown, there are multiple support members 122, and the multiple support members 122 are arranged at intervals on the other side of the load-bearing member 121. That is, the liquid cooling plate is located on the upper surface of the load-bearing member 121, and the multiple support members 122 are located on the lower surface of the load-bearing member 121. The liquid cooling plate and the multiple support members 122 are arranged opposite to each other, and the multiple support members 122 are arranged at intervals, so that gaps can be formed between the multiple support members 122. This arrangement allows the forklift fork arm to pass through the multiple support members 122, thereby facilitating the installation and transportation of the load-bearing structure 100 of the battery module.

[0043] In addition, if Figure 1As shown, the liquid cooling element 110 includes: a shell 111 and a plurality of liquid cooling mainboards 112, the plurality of liquid cooling mainboards 112 are arranged in the shell 111 at intervals, and the plurality of liquid cooling mainboards 112 are connected. It can be understood that the shell 111 and the plurality of liquid cooling mainboards 112 constitute the main structure of the liquid cooling element 110, the plurality of liquid cooling mainboards 112 are located in the shell 111, so that the shell 111 can protect the plurality of liquid cooling mainboards 112, thereby extending the service life of the plurality of liquid cooling mainboards 112, the plurality of liquid cooling mainboards 112 are arranged in the shell 111 at intervals, and the plurality of liquid cooling mainboards 112 are connected, thereby increasing the heat dissipation area of ​​the liquid cooling mainboard 112, thereby facilitating the plurality of liquid cooling plates to dissipate heat to the battery cell 200. For example, the liquid cooling mainboard 112 is made of aluminum material, thereby improving the heat dissipation capacity of the liquid cooling mainboard 112.

[0044] Among them, Figure 1 As shown, the housing 111 is provided with a liquid through hole 113 between two adjacent liquid cooling mainboards 112, and the multiple liquid cooling mainboards 112 are connected through the liquid through hole 113. In other words, the liquid through hole 113 is provided between the adjacent liquid cooling mainboards 112, so that the coolant can enter the liquid cooling mainboard 112 through the liquid through hole 113, and then the liquid cooling element 110 can dissipate heat for the battery cell 200, and the liquid through hole 113 is connected to the multiple liquid cooling mainboards 112, so that the coolant can flow in the multiple liquid cooling mainboards 112, and then the heat dissipation effect of the liquid cooling element 110 can be improved.

[0045] In particular, if Figure 1 As shown, among the two adjacent liquid through ports 113, one is located on one side of the first direction of the housing 111, and the other is located on the other side of the first direction of the housing 111. It can be understood that the first direction is the front-to-back direction of the load-bearing structure 100 of the battery module, and the two liquid through ports 113 are respectively located at the front and rear ends of the housing 111, so that the coolant can flow into the liquid cooling mainboard 112 through the liquid through ports 113.

[0046] Alternatively, if Figure 1 and Figure 2As shown, the liquid cooling mainboard 112 is constructed in a flat plate shape, the liquid cooling part 110 is welded to the load-bearing part 121, and the load-bearing part 121 is welded to the multiple supporting parts 122. That is to say, the flat liquid cooling mainboard 112 facilitates the flow of the coolant inside, and also facilitates the arrangement of the battery cell 200 on the liquid cooling mainboard 112, thereby increasing the contact area between the battery cell 200 and the liquid cooling mainboard 112, and further improving the heat dissipation efficiency of the liquid cooling mainboard 112 to the battery cell 200. The liquid cooling part 110, the load-bearing part 121 and the multiple supporting parts 122 are welded and connected in sequence from top to bottom, thereby improving the overall structural strength of the load-bearing structure 100 of the battery module, and also facilitating the installation and transportation of the load-bearing structure 100 of the battery module. For example, the liquid cooling part 110, the load-bearing part 121 and the multiple supporting parts 122 are welded by stir friction welding or argon arc welding, so that the connection between the liquid cooling part 110, the load-bearing part 121 and the multiple supporting parts 122 can be tightened.

[0047] like Figure 3 As shown, the battery module according to the utility model includes: a battery cell 200 and a load-bearing structure 100 of the battery module of the above embodiment, and the battery cell 200 is arranged on the load-bearing structure. It can be understood that by arranging the liquid cooling plate on one side of the load-bearing member 121, the load-bearing structure 100 of the battery module can have a heat dissipation function, and the support member 122 is arranged on the other side of the load-bearing member 121, so as to facilitate the movement and transportation of the load-bearing structure 100 of the battery module, and can also save the volume of the battery module, thereby saving costs. For example, the size of the battery module is 2.1m*2.1m*0.3m. Such an arrangement can place a larger battery cell 200 in the battery module, thereby improving the energy density and power efficiency of the battery module.

[0048] In addition, if Figure 3 As shown, the battery module further includes: a pressing plate 300, which is arranged on the side of the battery cell 200 away from the load-bearing structure. That is, the load-bearing structure 100 is located below the battery cell 200, so that the load-bearing structure 100 can lift the battery cell 200, and the pressing plate 300 is located above the battery cell 200. This arrangement can limit the battery cell 200 by the pressing plate 300, thereby preventing the battery cell 200 from moving, thereby improving the performance of the battery module.

[0049] In addition, if Figure 3As shown, the battery module further includes: an end plate 400, which is disposed on both sides of the battery cell 200 in the second direction, and the end plate 400 is connected between the load-bearing structure and the pressure plate 300, and the second direction is perpendicular to the first direction. It can be understood that the second direction is the left and right direction of the battery cell 200, the end plate 400 is located on the left and right sides of the battery cell 200, and the end plate 400 is located between the load-bearing structure and the pressure plate 300, so that the end plate 400 can limit the space on the left and right sides of the battery cell 200, thereby facilitating the installation of the battery cell 200 on the load-bearing structure.

[0050] In addition, if Figure 3 As shown, the end plate 400 is provided with a through hole, and the fasteners are passed through the through hole to be connected with the load-bearing structure 100. Such a setting can connect the end plate 400 with the load-bearing structure 100, thereby improving the structural strength of the battery module and facilitating the installation and transportation of the battery module.

[0051] In particular, if Figure 3 As shown, an installation space is defined between the load-bearing structure 100, the pressure plate 300 and the end plate 400, and the battery cell 200 is arranged in the installation space. Such an arrangement allows the load-bearing structure 100, the pressure plate 300 and the end plate 400 to protect the battery cell 200 and ensure the energy density of the battery cell 200, thereby extending the service life of the battery cell 200 and improving the performance of the battery module.

[0052] In addition, if Figure 3 As shown, the battery module also includes: a plurality of heat-conducting members, the plurality of heat-conducting members are arranged in the installation space at intervals, and the plurality of heat-conducting members are arranged in parallel with the end plate 400 to divide the installation space into a plurality of battery cell cavities, and there are a plurality of battery cells 200, and the plurality of battery cells 200 are arranged one by one in correspondence with the plurality of battery cell 200 cavities. In other words, the plurality of heat-conducting members are arranged vertically in the installation space, and the plurality of heat-conducting members are arranged evenly at intervals, so that the plurality of heat-conducting members can divide the installation space into a plurality of battery cell cavities, and then the battery cell cavities can limit the battery cells 200, and a battery cell 200 can be placed in each battery cell cavity, so that the battery cells 200 can be easily installed in the battery module. For example, the plurality of heat-conducting members are aerogels or silicone strips, so that the aerogels or silicone strips can limit the battery cells 200 after expansion, and can also transfer the heat generated by the battery cells 200, thereby improving the heat dissipation efficiency of the battery module.

[0053] In addition, if Figure 4As shown, the battery module also includes: a bracket 500 and a connecting piece 600, the bracket 500 is arranged on both sides of the battery cell 200 in the first direction, a card slot is arranged on the side of the bracket 500 close to the battery cell 200, and the connecting piece 600 is arranged in the card slot. It can be understood that the bracket 500 is located on the front and rear sides of the battery cell 200, so that the bracket 500 can limit the front and rear sides of the battery cell 200, and the bracket 500 is provided with a card slot on the side facing the battery cell 200, so that the connecting piece 600 can be arranged in the card slot. This arrangement allows multiple battery cells 200 to be electrically connected through the connecting piece 600, thereby improving the energy density of the battery module, and can also save materials by the card sister method between the connecting piece 600 and the card slot, thereby saving the cost of the battery module.

[0054] In addition, Figure 3 As shown, the battery module further includes: a BMU module 700, which is arranged on a side of the end plate 400 away from the battery cell 200, and the BMU module 700 is electrically connected to the connecting piece 600. That is, the BMU module 700 is arranged on a side of the left end plate 400 away from the battery cell 200, or on a side of the right end plate 400 away from the battery cell 200, so that the BMU module 700 does not occupy the installation space of the battery cell 200, and the BMU module 700 is electrically connected to the connecting piece 600, so that the BMU module 700 can collect information of the battery cell 200, thereby facilitating the BMU module 700 to perform intelligent detection on the battery cell 200.

[0055] like Figure 5 As shown, the energy storage battery 1000 according to the present invention includes: a box body 800 and the battery module of the above embodiment, and the battery module is arranged in the box body 800, so that the box body 800 can provide installation space for multiple battery modules, thereby improving the energy density of the energy storage battery 1000.

[0056] Among them, Figure 5 As shown, a plurality of partitions 900 are arranged in the box 800, and the battery modules are arranged on the plurality of partitions 900 respectively, so that a plurality of battery modules can be arranged in the box 800, and the partitions 900 are separated between the plurality of battery modules, so that the plurality of battery modules do not affect each other, and it is also convenient to place the battery modules on the partitions 900, thereby improving the energy density and working efficiency of the energy storage battery 1000. For example, the partition 900 is triangular steel, so that the structural strength of the partition 900 can be improved, and the partition 900 can also be extracted relative to the box 800, thereby facilitating the installation and maintenance of the battery module.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A load-bearing structure of a battery module, characterized in that: include: Liquid cooling parts; The load-bearing component comprises: a load-bearing member and a support member, the liquid cooling member is arranged on one side of the load-bearing member, and the support member is arranged on the other side of the load-bearing member.

2. The load-bearing structure of the battery module according to claim 1, characterized in that: The liquid cooling component and the load-bearing component are an integrally formed structure.

3. The load-bearing structure of the battery module according to claim 1, characterized in that: There are a plurality of support members, and the plurality of support members are arranged at intervals on the other side of the load-bearing member.

4. The load-bearing structure of the battery module according to claim 1, characterized in that: The liquid cooling component comprises: a shell and a plurality of liquid cooling mainboards. The plurality of liquid cooling mainboards are arranged in the shell at intervals and are connected to each other.

5. The load-bearing structure of the battery module according to claim 4, characterized in that: The shell is provided with a liquid through hole between two adjacent liquid cooling mainboards, and the plurality of liquid cooling mainboards are connected to each other through the liquid through hole.

6. The load-bearing structure of the battery module according to claim 5, characterized in that: Among the two adjacent liquid through holes, one is located on one side of the shell in the first direction, and the other is located on the other side of the shell in the first direction.

7. The load-bearing structure of the battery module according to claim 4, characterized in that: The liquid cooling mainboard is structured in a flat plate shape.

8. The load-bearing structure of the battery module according to claim 1, characterized in that: The liquid cooling part is connected to the load-bearing part by welding; and / or The load-bearing member and the plurality of support members are connected by welding.

9. A battery module, characterized in that: include: Battery cells; The load-bearing structure of the battery module according to any one of claims 1 to 8, wherein the battery cell is arranged on the load-bearing structure.

10. The battery module according to claim 9, characterized in that: Also includes: A pressing plate is arranged on a side of the battery core away from the load-bearing structure.

11. The battery module according to claim 10, characterized in that: Also includes: The end plates are arranged on both sides of the battery core in the second direction, and the end plates are connected between the load-bearing structure and the pressure plate, and the second direction is arranged perpendicular to the first direction.

12. The battery module according to claim 11, characterized in that: The end plate is provided with a through hole, and the fastener passes through the through hole and is connected to the load-bearing structure.

13. The battery module according to claim 11, characterized in that: An installation space is defined between the load-bearing structure, the pressure plate and the end plate, and the battery cell is arranged in the installation space.

14. The battery module according to claim 13, characterized in that: Also includes: A plurality of heat-conducting members are arranged at intervals in the installation space, and the plurality of heat-conducting members are arranged in parallel with the end plate to divide the installation space into a plurality of battery cell cavities. There are a plurality of battery cells, and the plurality of battery cells are arranged in one-to-one correspondence with the plurality of battery cell cavities.

15. The battery module according to claim 14, characterized in that: Also includes: A bracket is arranged on both sides of the battery core in a first direction.

16. The battery module according to claim 15, characterized in that: Also includes: A connecting piece, a slot is arranged on one side of the bracket close to the battery core, and the connecting piece is arranged in the slot.

17. The battery module according to claim 16, characterized in that: Also includes: A BMU module is disposed on a side of the end plate away from the battery core, and the BMU module is electrically connected to the connecting sheet.

18. An energy storage battery, characterized in that: include: Box; The battery module according to any one of claims 9 to 17, wherein the battery module is disposed in the box.

19. The energy storage battery according to claim 18, characterized in that: A plurality of partitions are arranged in the box body, and the battery modules are arranged on the plurality of partitions respectively.

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