Energy storage battery pack

Abstract

This disclosure provides an energy storage battery pack, belonging to the field of energy storage technology. The energy storage battery pack includes a battery module and multiple liquid cooling plates; the multiple liquid cooling plates are respectively connected to different sides of the battery module, and at least two of the multiple liquid cooling plates are interconnected. By using this disclosure, the multiple liquid cooling plates are respectively connected to different sides of the battery module, increasing the heat exchange area between the liquid cooling plates and the battery module, thereby improving the heat dissipation effect of the battery module, and further improving the heat dissipation effect of the energy storage battery pack.

Description

Technical Field

[0001] This disclosure relates to the field of energy storage technology, specifically to an energy storage battery pack. Background Technology

[0002] As the energy storage industry demands higher system power, its heat dissipation is also gradually increasing, leading to higher heat dissipation requirements for energy storage battery packs.

[0003] Current heat dissipation solutions in energy storage battery packs involve placing a liquid cooling plate at the bottom of the battery module. The liquid cooling plate exchanges heat with the battery module to meet the heat dissipation requirements of the energy storage battery pack.

[0004] However, the above-mentioned heat dissipation effect is poor and can no longer meet the heat dissipation requirements corresponding to high system power. Utility Model Content

[0005] This disclosure provides an energy storage battery pack that can solve the technical problems existing in related technologies. The technical solution is as follows:

[0006] This disclosure provides an energy storage battery pack, which includes a battery module and multiple liquid cooling plates;

[0007] The plurality of liquid cooling plates are respectively connected to different sides of the battery module, and at least two of the plurality of liquid cooling plates are connected in communication.

[0008] In one possible implementation, the plurality of liquid cooling plates includes two first liquid cooling plates;

[0009] The two first liquid cooling plates are respectively connected to two opposite first sides of the battery module, and the two first liquid cooling plates are connected in communication.

[0010] In one possible implementation, the energy storage battery pack further includes two end plates;

[0011] The two end plates are respectively connected to the two opposite second sides of the battery module, and each end plate is respectively connected to the two first liquid cooling plates.

[0012] In one possible implementation, the first liquid cooling plate includes a liquid cooling plate body and two connecting plates;

[0013] The liquid cooling plate body is connected to the first side surface;

[0014] The two connecting plates are respectively connected to both ends of the liquid cooling plate body, and the two connecting plates are respectively connected to the surfaces of different end plates that are away from the battery module.

[0015] In one possible implementation, the connecting plate is welded to the surface of the end plate that is away from the battery module.

[0016] In one possible implementation, the first liquid cooling plate has a liquid cooling channel with an inlet and an outlet, both of which are located on a connecting plate of the first liquid cooling plate.

[0017] The connecting plates containing the inlets and outlets of the two first liquid cooling plates are both connected to the same end plate.

[0018] In one possible implementation, the liquid cooling channel has a U-shaped structure.

[0019] In one possible implementation, the energy storage battery pack further includes connecting pipes;

[0020] The connecting pipe is located on the side of the end plate away from the battery module, and both ends of the connecting pipe are respectively connected to the two first liquid cooling plates.

[0021] In one possible implementation, the side of the end plate away from the battery module has reinforcing ribs.

[0022] In one possible implementation, the energy storage battery pack further includes an insulating plate;

[0023] The insulating plate is located between the end plate and the battery module, and is connected to both the end plate and the battery module.

[0024] In one possible implementation, the plurality of liquid cooling plates further includes a second liquid cooling plate;

[0025] The second liquid cooling plate is connected to the third side of the battery module.

[0026] In one possible implementation, the battery module includes multiple cells, each cell having at least two sides connected to different liquid cooling plates.

[0027] In one possible implementation, the energy storage battery pack further includes an insulating and thermally conductive adhesive;

[0028] The insulating thermally conductive adhesive is located between the liquid cooling plate and the battery module, and is connected to both the liquid cooling plate and the battery module.

[0029] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0030] This disclosure provides an energy storage battery pack in which multiple liquid cooling plates are respectively connected to different sides of the battery module, thereby increasing the heat exchange area between the liquid cooling plates and the battery module, thus improving the heat dissipation effect of the battery module, and further improving the heat dissipation effect of the energy storage battery pack.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an energy storage battery pack shown in an embodiment of this disclosure;

[0034] Figure 2 This is a schematic diagram of the exploded structure of an energy storage battery pack according to an embodiment of this disclosure;

[0035] Figure 3 This is a schematic diagram of the structure of a liquid cooling plate shown in an embodiment of this disclosure;

[0036] Figure 4 This is a schematic diagram of the structure of an energy storage battery pack shown in an embodiment of this disclosure;

[0037] Figure 5 This is an exploded structural diagram of an energy storage battery pack according to an embodiment of this disclosure;

[0038] Figure 6 This is a schematic diagram of the structure of an end plate shown in an embodiment of this disclosure;

[0039] Figure 7 This is a schematic diagram of the structure of a battery module shown in an embodiment of this disclosure.

[0040] Legend

[0041] 1. Battery module;

[0042] 11. Battery cells;

[0043] A. First side view; B. Second side view; C. Third side view;

[0044] 2. Liquid cooling plate;

[0045] 21. First liquid cooling plate;

[0046] 211. Liquid cooling plate body; 212. Connecting plate; 213. Liquid cooling channel;

[0047] 2131. Inlet; 2132. Outlet;

[0048] 3. End plate;

[0049] 31. Reinforcing ribs;

[0050] D. Connecting surface;

[0051] 4. Connect the pipes;

[0052] 5. Insulation board. Detailed Implementation

[0053] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0054] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0055] This disclosure provides an energy storage battery pack, see [link to relevant documentation]. Figure 1 and Figure 2 The energy storage battery pack includes battery module 1 and multiple liquid cooling plates 2 (see...). Figure 3 Multiple liquid cooling plates 2 are connected to different sides of the battery module 1, and at least two of the multiple liquid cooling plates 2 are connected.

[0056] Battery module 1 is used to provide power to other devices.

[0057] The liquid cooling plate 2 is attached to the side of the battery module 1. When the battery module 1 generates heat during operation, the liquid cooling plate 2 can exchange heat with the battery module 1, thereby achieving a heat dissipation effect.

[0058] The energy storage battery pack in this embodiment includes multiple liquid cooling plates 2, each of which exchanges heat with different sides of the battery module 1, increasing the heat exchange area and thus improving the heat dissipation effect. This effectively controls the internal temperature of the energy storage battery pack and enhances its functionality and safety.

[0059] Furthermore, at least two of the multiple liquid cooling plates 2 are connected, which reduces the number of inlet and outlet pipes that connect the multiple liquid cooling plates 2, thereby effectively reducing the space occupied.

[0060] In this embodiment, the number of liquid cooling plates 2 can be any reasonable scheme; in one possible implementation, see [link to relevant documentation]. Figure 4 and Figure 5 The multiple liquid cooling plates 2 may include two first liquid cooling plates 21, which are respectively connected to two opposite first sides A of the battery module 1, and the two first liquid cooling plates 21 are connected to each other.

[0061] The battery module 1 is cooled by two first liquid cooling plates 21. The two first liquid cooling plates 21 are connected, and only one inlet pipe and one outlet pipe are needed to achieve the circulation cooling of the two first liquid cooling plates 21, which reduces the space occupied.

[0062] The first side A can be the side with a larger area in the battery module 1, thereby increasing the heat exchange area between the battery module 1 and the first liquid cooling plate 21, and thus improving the heat dissipation effect.

[0063] In one possible implementation, the plurality of liquid cooling plates 2 may further include a second liquid cooling plate, which is connected to the third side C of the battery module 1 (see [reference]). Figure 4 (connected)

[0064] In this way, a second liquid cooling plate can be added on top of the two first liquid cooling plates 21 to increase the heat exchange area and further improve the heat dissipation effect of the energy storage battery pack.

[0065] Furthermore, the electrical connection structure in the battery module 1 can be set on the side opposite to the third side C, so that the setting of the first liquid cooling plate 21 and the second liquid cooling plate will not affect the normal use of the battery module 1.

[0066] In one possible implementation, see Figure 2 The energy storage battery pack may also include two end plates 3. The two end plates 3 are respectively connected to two opposite second sides B of the battery module 1, and each end plate 3 is respectively connected to two first liquid cooling plates 21.

[0067] The second side B is the smaller side of the battery module 1, and the end plate 3 is connected to the second side B, which plays a protective role.

[0068] Furthermore, the two second sides B are adjacent to the two first sides A, and the two end plates 3 are respectively connected to the first liquid cooling plate 21, thus forming a ring structure. This ring structure provides a fixing function for the battery module 1 located inside the ring structure, thereby improving the overall strength of the energy storage battery pack. This ring structure can replace the steel strips and other fasteners used in related technologies, thus achieving heat dissipation and protection while also saving costs.

[0069] In one possible implementation, see Figure 6 The side of the end plate 3 away from the battery module 1 has a reinforcing rib 31.

[0070] In this way, the strength of the end plate 3 is increased by reinforcing rib 31, thereby improving the overall strength of the energy storage battery pack.

[0071] The specific structure of stiffener 31 can be a plate-like structure, or Figure 3 The mesh structure shown is not limited to the embodiments disclosed herein.

[0072] In this embodiment, the connection structure between the first liquid cooling plate 21 and the end plate 3 can be any reasonable structure. In one possible implementation, see [link to relevant documentation]. Figure 2 The first liquid cooling plate 21 may include a liquid cooling plate body 211 and two connecting plates 212.

[0073] The liquid cooling plate body 211 is connected to the first side A to achieve heat exchange and cooling between the liquid cooling plate body and the first side A.

[0074] The two connecting plates 212 are respectively connected to both ends of the liquid cooling plate body 211, and the two connecting plates 212 are respectively connected to the surfaces of different end plates 3 that are away from the battery module 1.

[0075] See Figure 2 The connecting plate 212 is located on the side of the liquid cooling plate body 211 near the end plate 3. The angle between the plane of the connecting plate 212 and the plane of the liquid cooling plate body 211 is less than 180 degrees. This is equivalent to the connecting plate 212 bending from the liquid cooling plate body 211 to the outside of the end plate 3 and connecting with the end plate 3. This bending connection structure between the surfaces can enhance the connection strength between the first liquid cooling plate 21 and the end plate 3, thereby enhancing the fixing strength of the ring structure formed by the first liquid cooling plate 21 and the end plate 3 to the battery module 1, and thus enhancing the overall strength of the energy storage battery pack.

[0076] There are various ways to connect the connecting plate 212 and the end plate 3. For example, they can be bolted together, or the connecting plate 212 can be welded to the surface of the end plate 3 furthest from the battery module 1. See [reference needed]. Figure 2 The surface of the end plate 3 away from the battery module 1 has a connecting surface D. The connecting plate 212 can be welded to the connecting surface D. The welding connection can make the fixed connection between the connecting plate 212 and the end plate 3 more stable, thereby improving the connection strength between the first liquid cooling plate 21 and the end plate 3.

[0077] In one possible implementation, see Figure 2 The first liquid cooling plate 21 has a liquid cooling channel 213, in which water or coolant can flow, thereby achieving heat exchange and cooling between the liquid cooling channel 213 and the battery module 1.

[0078] The liquid cooling channel 213 has an inlet 2131 and an outlet 2132. The inlet 2131 and the outlet 2132 are both located on a connecting plate 212 of the first liquid cooling plate 21. The connecting plates 212 where the inlets 2131 and outlets 2132 of the two first liquid cooling plates 21 are located are all connected to the same end plate 3.

[0079] The inlet 2131 of one of the first liquid cooling plates 21 is connected to the outlet 2132 of the other first liquid cooling plate 21, thereby realizing the connection between the liquid cooling channels 213 of the two first liquid cooling plates 21.

[0080] See Figure 1 and Figure 2 The energy storage battery pack also includes a connecting pipe 4, which is located on the side of the end plate 3 away from the battery module 1, and the two ends of the connecting pipe 4 are respectively connected to two first liquid cooling plates 21.

[0081] In this way, the battery module 1 is surrounded and fixed by the two end plates 3 and the two first liquid cooling plates 21, and the two first liquid cooling plates 21 are connected by the connecting pipe 4, so that the two structures do not interfere with each other.

[0082] When the first liquid cooling plate 21 has a liquid cooling channel 213, the two ends of the connecting pipe 4 are respectively connected to the water inlet 2131 of one first liquid cooling plate 21 and the water outlet 2132 of the other first liquid cooling plate 21, thereby realizing the connection between the two first liquid cooling plates 21 through the connecting pipe 4.

[0083] In this way, the remaining outlet 2132 of one of the first liquid cooling plates 21 and the remaining inlet 2131 of the other first liquid cooling plate 21 can be connected to the outlet pipe and the inlet pipe respectively. In this way, the coolant flows from the inlet pipe into the first side A of the battery module 1 in one of the first liquid cooling plates 21 for heat exchange, and then flows into the other first liquid cooling plate 21 through the connecting pipe 4 to exchange heat on the other first side A of the battery module 1. Finally, it flows out through the outlet pipe, thus realizing the cooling cycle.

[0084] In this way, the inlets 2131 and outlets 2132 of the two first liquid cooling plates 21 are located on the same side of the energy storage battery pack, which makes it easier for the two first liquid cooling plates 21 to be connected, reduces the length of the connecting pipe 4, and thus reduces the space occupied.

[0085] By installing the inlet 2131 and outlet 2132 of the two first liquid cooling plates 21 on the same side, the inlet and outlet pipes are also placed on the same side of the energy storage battery pack, making full use of the space and reducing the occupation of excess space.

[0086] In one possible implementation, the liquid cooling channel 213 can have a U-shaped structure, see [reference needed]. Figure 2 In this way, the inlet 2131 and the outlet 2132 can be located on the same connecting plate 212, and the liquid cooling channel 213 can also extend the length of the heat exchange path between itself and the first side A through the U-shaped structure, thereby improving the heat exchange efficiency of each cycle.

[0087] See Figure 2 The liquid cooling channel 213 may have a U-shaped structure, or it may have multiple U-shaped structures to form an S-shaped structure. The design can be made according to the actual situation, and the present disclosure does not limit this.

[0088] In one possible implementation, see Figure 2 and Figure 5 The energy storage battery pack also includes an insulating plate 5, which is located between the end plate 3 and the battery module 1, and is connected to the end plate 3 and the battery module 1 respectively.

[0089] Insulation is provided between the battery module 1 and the end plate 3 by using the insulating plate 5, which can improve the safety of the energy storage battery pack during operation, especially when the end plate 3 is made of metal, which can ensure the safety of the energy storage battery pack.

[0090] There can be two insulating plates 5, each of which is located between a different end plate 3 and the battery module 1, thereby providing insulation between both end plates 3 and the battery module 1.

[0091] The material of the insulating board 5 can be any reasonable insulating material, such as PC (Polycarbonate), etc., and this disclosure does not limit it.

[0092] In one possible implementation, see Figure 7 The battery module 1 may include multiple battery cells 11, and at least two sides of each battery cell 11 are connected to different liquid cooling plates 2.

[0093] This allows each cell 11 to have at least two sides that can directly exchange heat with the liquid cooling plate 2, thereby increasing the heat exchange area between each cell 11 and the liquid cooling plate 2 and further improving the heat dissipation effect of the energy storage battery pack.

[0094] In another possible implementation, if more cells 11 are needed to increase the capacity of the battery module 1, or if the overall shape of the battery module 1 needs to be adjusted, at least one side of each cell 11 can be connected to the liquid cooling plate 2 as required. The specific arrangement of the multiple cells 11 is not limited in this embodiment.

[0095] In one possible implementation, the energy storage battery pack also includes an insulating thermally conductive adhesive (not shown) located between the liquid cooling plate 2 and the battery module 1, and connected to both the liquid cooling plate 2 and the battery module 1.

[0096] On the one hand, the insulating thermally conductive adhesive can be used to fix the liquid cooling plate 2 to the side of the battery module 1. On the other hand, the insulating thermally conductive adhesive has an insulating effect, which can insulate the battery module 1 from the liquid cooling plate 2, thereby improving the safety of the energy storage battery pack during operation.

[0097] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0098] This disclosure provides an energy storage battery pack in which multiple liquid cooling plates 2 are respectively connected to different sides of the battery module 1, thereby increasing the heat exchange area between the liquid cooling plates 2 and the battery module 1, thus improving the heat dissipation effect of the battery module 1, and further improving the heat dissipation effect of the energy storage battery pack.

[0099] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An energy storage battery pack, characterized by, The energy storage battery pack includes a battery module (1) and multiple liquid cooling plates (2); The plurality of liquid cooling plates (2) are respectively connected to different sides of the battery module (1), and at least two of the plurality of liquid cooling plates (2) are connected to each other.

2. The energy storage battery pack of claim 1, wherein, The plurality of liquid cooling plates (2) includes two first liquid cooling plates (21); The two first liquid cooling plates (21) are respectively connected to the two opposite first sides (A) of the battery module (1), and the two first liquid cooling plates (21) are connected in communication.

3. The energy storage battery pack of claim 2, wherein, The energy storage battery pack also includes two end plates (3); The two end plates (3) are respectively connected to the two opposite second sides (B) of the battery module (1), and each end plate (3) is respectively connected to the two first liquid cooling plates (21).

4. The energy storage battery pack of claim 3, wherein, The first liquid cooling plate (21) includes a liquid cooling plate body (211) and two connecting plates (212); The liquid cooling plate body (211) is connected to the first side surface (A); The two connecting plates (212) are respectively connected to both ends of the liquid cooling plate body (211), and the two connecting plates (212) are respectively connected to the surfaces of different end plates (3) that are away from the battery module (1).

5. The energy storage battery pack of claim 4, wherein, The connecting plate (212) is welded to the surface of the end plate (3) away from the battery module (1).

6. The energy storage battery pack of claim 4, wherein, The first liquid cooling plate (21) has a liquid cooling channel (213), the liquid cooling channel (213) has an inlet (2131) and an outlet (2132), the inlet (2131) and the outlet (2132) are both located on a connecting plate (212) of the first liquid cooling plate (21); The connecting plate (212) where the inlet (2131) and outlet (2132) of the two first liquid cooling plates (21) are located is connected to the same end plate (3).

7. The energy storage battery pack of claim 6, wherein, The liquid cooling channel (213) has a U-shaped structure.

8. The energy storage battery pack of any of claims 3-7, wherein, The energy storage battery pack also includes connecting pipes (4); The connecting pipe (4) is located on the side of the end plate (3) away from the battery module (1), and the two ends of the connecting pipe (4) are respectively connected to the two first liquid cooling plates (21).

9. The energy storage battery pack of any of claims 3-7, wherein, The end plate (3) has a reinforcing rib (31) on the side away from the battery module (1).

10. The energy storage battery pack of any of claims 3-7, wherein, The energy storage battery pack also includes an insulating plate (5); The insulating plate (5) is located between the end plate (3) and the battery module (1), and is connected to the end plate (3) and the battery module (1) respectively.

11. The energy storage battery pack of any of claims 2-7, wherein, The plurality of liquid cooling plates (2) also includes a second liquid cooling plate; The second liquid cooling plate is connected to the third side (C) of the battery module (1).

12. The energy storage battery pack of any one of claims 1-7, wherein, The battery module (1) includes multiple cells (11), and at least two sides of each cell (11) are connected to different liquid cooling plates (2).

13. The energy storage battery pack of any one of claims 1-7, wherein, The energy storage battery pack also includes insulating and thermally conductive adhesive; The insulating thermally conductive adhesive is located between the liquid cooling plate (2) and the battery module (1), and is connected to the liquid cooling plate (2) and the battery module (1) respectively.

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