Cold plate assembly, battery module, energy storage device and electric equipment

Abstract

According to the cold plate assembly, the battery module, the energy storage device and the electric equipment, the cold plate assembly comprises a first cold plate and an end plate, the first cold plate is suitable for abutting against a battery cell of the energy storage device, the end plate is fixedly connected with the first cold plate, and the end plate is suitable for being relatively fixed with a box body of the energy storage device. The first cold plate is suitable for abutting against the battery cell of the energy storage device, and the end plate is suitable for being relatively fixed with the box body of the energy storage device, so that the first cold plate and the end plate can be simultaneously installed into the box body, a space for connecting and fixing the first cold plate and the end plate does not need to be arranged in the box body, and the volume utilization rate of the energy storage device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment manufacturing, and in particular to a cold plate assembly, a battery module, an energy storage device and electrical equipment. Background Art

[0002] Energy storage devices are a common type of new energy storage equipment. They convert electrical energy into chemical energy for storage through chemical batteries, and convert chemical energy into electrical energy for release when needed. Energy storage devices in the prior art have the problem of low volume utilization. Utility Model Content

[0003] The utility model aims to provide a cold plate assembly, a battery module, an energy storage device and an electrical device, so as to solve the problem of low volume utilization of the energy storage device in the prior art.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a cold plate assembly, comprising: a first cold plate, adapted to abut against a battery cell of an energy storage device; an end plate, connected and fixed to the first cold plate, adapted to be relatively fixed to a box of the energy storage device.

[0006] In one embodiment, the first cold plate includes a plate body, the plate body is provided with a flow channel, a first opening and a second opening, the first opening and the second opening are both connected to the flow channel, and the flow channel is bent and extended.

[0007] In one embodiment, the plate body includes a first area and a second area, the first area and the second area are arranged in sequence, the flow channel passes through the first area and the second area, and the arrangement density of the flow channel in the second area is greater than the arrangement density of the flow channel in the first area.

[0008] In one embodiment, the plate body also includes a third area, the third area is arranged on a side of the second area away from the first area, the flow channel passes through the third area, and the arrangement density of the flow channel in the second area is greater than the arrangement density of the flow channel in the third area.

[0009] In one embodiment, the first opening and the second opening are both opened on the same side of the plate body.

[0010] In one embodiment, the first cold plate further includes a first plug connector and a second plug connector, the first plug connector and the second plug connector are both connected to the plate body, the first plug connector is connected to the first opening, and the second plug connector is connected to the second opening.

[0011] In one embodiment, the first cold plate and the end plate are an integrated structure.

[0012] In the second aspect, the utility model also provides a battery module, comprising a plurality of battery cells and the cold plate assembly described in each embodiment of the first aspect, the plurality of battery cells are arranged sequentially in a first direction, the cold plate assembly is connected to the outermost sides of the plurality of battery cells, the first cold plate of the cold plate assembly abuts against the battery cells, and the end plate of the cold plate assembly is suitable for being relatively fixed to the box body of an energy storage device.

[0013] In one embodiment, the first cold plate abuts against a large surface of the battery cell.

[0014] In one embodiment, the battery module further includes a second cold plate, the second cold plate abuts against opposite surfaces of any two adjacent battery cells, and the second cold plate has the same structure as the first cold plate.

[0015] In a third aspect, the utility model further provides an energy storage device, comprising a box, a circulation assembly and the battery module described in each embodiment of the second aspect, the box having a accommodating cavity, the battery module being accommodated in the accommodating cavity, the end plate of the cold plate assembly of the battery module being relatively fixed to the box, the circulation assembly being connected to the first cold plate of the cold plate assembly and the second cold plate of the battery module; or, the energy storage device comprises a box and the cold plate assembly described in each embodiment of the first aspect, the end plate of the cold plate assembly being relatively fixed to the box.

[0016] In one embodiment, the first opening and the second opening of the first cold plate, and the first opening and the second opening of the second cold plate are disposed on the same side of the battery module, and the first opening and the second opening are both connected to the circulation assembly.

[0017] In one embodiment, the first opening of the first cold plate and the first opening of the second cold plate are disposed opposite to each other in a first direction, and the second opening of the first cold plate and the second opening of the second cold plate are disposed opposite to each other in the first direction.

[0018] In one embodiment, among any two adjacent first openings, one of the first openings is suitable for inputting cooling medium, and the other first opening is suitable for outputting cooling medium.

[0019] In a fourth aspect, the utility model further provides an electrical equipment, comprising the energy storage device described in the various embodiments of the third aspect; or, the electrical equipment comprises the battery module described in the various embodiments of the second aspect; or, the electrical equipment comprises the cold plate assembly described in the various embodiments of the first aspect.

[0020] By setting the first cold plate and the end plate to be connected and fixed, the first cold plate is suitable for abutting against the battery cell of the energy storage device, and the end plate is suitable for being relatively fixed to the box body of the energy storage device, so that the first cold plate and the end plate can be installed into the box body at the same time, and there is no need to set a space in the box body for connecting and fixing the first cold plate and the end plate, thereby improving the volume utilization rate of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a structural diagram of a cold plate assembly of an embodiment;

[0023] Figure 2 is a cross-sectional view of a first cold plate of an embodiment;

[0024] Figure 3 is a structural diagram of a battery module of an embodiment;

[0025] Figure 4 is a structural diagram of a second cold plate in an embodiment.

[0026] Description of reference numerals:

[0027] 1000-battery module;

[0028] 100-cold plate assembly;

[0029] 10-first cold plate, 11-plate body, 111-first area, 112-second area, 113-third area, 114-first surface, 115-third surface, 116-fifth surface, 12-flow channel, 121-first flow channel, 122-second flow channel, 13-first opening, 14-second opening, 15-first plug connector, 16-second plug connector;

[0030] 20-end plate;

[0031] 200-battery core, 201-pole core, 202-pole ear, 203-narrow surface;

[0032] 300-second cold plate;

[0033] X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] Please refer to Figure 1 The utility model provides a cold plate assembly 100, including a first cold plate 10 and an end plate 20, wherein the first cold plate 10 is suitable for abutting against a battery cell 200 of an energy storage device, and the end plate 20 is connected and fixed to the first cold plate 10, and the end plate 20 is suitable for being relatively fixed to a box body (not shown) of the energy storage device.

[0039] Optionally, the first cold plate 10 is in contact with the pole core 201 of the battery cell 200 and is insulated from the pole ear 202 of the battery cell 200. Optionally, the first cold plate 10 may use a liquid cooling medium (not shown) to cool the battery cell 200, which may specifically be silicone oil, castor oil, water, and ethylene glycol aqueous solution, etc., without limitation. Optionally, the first cold plate 10 may also use a gaseous cooling medium, which may specifically be air, carbon dioxide, helium, nitrogen, argon, and Freon, etc., without limitation. Optionally, the first cold plate 10 may also use a cooling medium of a solid phase change material, which may specifically be polyethylene glycol, polyethylene, polyamide, sodium sulfate, and calcium chloride, etc., without limitation.

[0040] Optionally, the end plate 20 may contact the inner wall surface of the box body to fix the battery cell, or may contact an adjustment mechanism (not shown) disposed on the inner wall surface of the box body, without limitation.

[0041] Optionally, the first cold plate 10 and the end plate 20 may be an integrated structure, or they may be connected and fixed by means of snap connection, screw connection, riveting, magnetic attraction, welding, etc., and after being connected and fixed, they are installed into the box body and are relatively fixed in contact with the battery cell 200 and the box body. Optionally, the first cold plate 10 may be made of a material that meets the requirements of structural strength, good thermal conductivity and high temperature resistance, specifically aluminum alloy, copper alloy, stainless steel and titanium alloy, etc., without limitation. Optionally, the material of the end plate 20 is similar to that of the first cold plate 10, which can be used for reference only and will not be described in detail.

[0042] By setting the first cold plate 10 and the end plate 20 to be connected, the first cold plate 10 is suitable for abutting against the battery cell 200 of the energy storage device, and the end plate 20 is suitable for being relatively fixed to the box of the energy storage device, so that the first cold plate 10 and the end plate 20 can be installed into the box at the same time, and there is no need to set a space in the box for connecting and fixing the first cold plate 10 and the end plate 20, thereby improving the volume utilization of the energy storage device.

[0043] Please refer to Figure 2 The first cold plate 10 includes a plate body 11 , the plate body 11 is provided with a flow channel 12 , a first opening 13 and a second opening 14 , the first opening 13 and the second opening 14 are both connected to the flow channel 12 , and the flow channel 12 is bent and extended.

[0044] Optionally, the flow channel 12 includes a first flow channel 121 and a second flow channel 122, one end of the first flow channel 121 is connected to the first opening 13, and the other end is connected to the second flow channel 122, and the second flow channel 122 is connected to the second opening 14. The first flow channel 121 and the second flow channel 122 are both bent and extended, and are arranged in parallel and spaced at any position of the plate body 11, thereby improving the temperature uniformity of the first cold plate 10 and ensuring the stability of the heat dissipation capacity of the first cold plate 10. Optionally, the first flow channel 121 and the second flow channel 122 are bounded by the middle length of the flow channel 12, or by any position of the flow channel 12 such as a third, a fourth, or a fifth division, without limitation.

[0045] Optionally, in the orthographic projection in the extension direction of the flow channel 12, the contour of the flow channel 12 can be circular, rectangular, triangular, elliptical, etc., without limitation. Optionally, the plate body 11 can form the flow channel 12 by stamping, welding, inflation, bottom plate buried copper tube, etc., without limitation. Optionally, the inner wall surfaces of the first opening 13 and the second opening 14 are both provided with internal threads (not shown) to facilitate connection and fixation with an external pipe (not shown).

[0046] The first cold plate 10 includes a plate body 11, the plate body 11 is provided with a flow channel 12, a first opening 13 and a second opening 14, the first opening 13 and the second opening 14 are both connected to the flow channel 12, and the flow channel 12 is bent and extended, so that the cooling medium can pass through the first opening 13 or the second opening 14 through the flow channel 12 to dissipate heat for the battery cell 200, and at the same time, the bending and extension of the flow channel 12 increases the contact area between the flow channel 12 and the battery cell 200, thereby further improving the heat dissipation capacity of the first cold plate 10.

[0047] Please refer to Figure 2 The plate body 11 includes a first area 111 and a second area 112, which are arranged in sequence. The flow channel 12 passes through the first area 111 and the second area 112, and the arrangement density of the flow channel 12 in the second area 112 is greater than the arrangement density of the flow channel 12 in the first area 111.

[0048] Optionally, the second area 112 corresponds to the middle of the plate body 11 in the third direction Z, and the first area 111 corresponds to the end of the plate body 11 in the third direction Z.

[0049] Optionally, the arrangement density of the flow channel 12 in the first region 111 refers to the ratio of the projected area of ​​the portion of the flow channel 12 in the first region 111 to the projected area of ​​the first region 111. Optionally, the arrangement density of the flow channel 12 in the second region 112 refers to the ratio of the projected area of ​​the portion of the flow channel 12 in the second region 112 to the projected area of ​​the second region 112.

[0050] In the prior art, the cold plate assembly 100 is usually arranged at the bottom of the battery cell 200 to reduce the length of the energy storage device. However, the heat generated in the middle of the battery cell 200 is greater than that in other positions, resulting in poor cooling effect of the cold plate assembly 100 .

[0051] The plate body 11 includes a first area 111 and a second area 112, the first area 111 and the second area 112 are arranged in sequence, the flow channel 12 passes through the first area 111 and the second area 112, and the arrangement density of the flow channel 12 in the second area 112 is greater than the arrangement density of the flow channel 12 in the first area 111, so that the heat dissipation performance of the first cold plate 10 is concentrated on the middle position of the battery cell 200, so that when the heat generated in the middle of the battery cell 200 is relatively large, the first cold plate 10 can dissipate heat for the battery cell 200 in time.

[0052] Please refer to Figure 2 The plate body 11 also includes a third area 113 , which is disposed on a side of the second area 112 away from the first area 111 , through which the flow channel 12 passes, and an arrangement density of the flow channel 12 in the second area 112 is greater than an arrangement density of the flow channel 12 in the third area 113 .

[0053] Optionally, the third region 113 corresponds to the end of the plate 11 away from the first region 111 in the third direction Z. Optionally, the arrangement density of the flow channel 12 in the third region 113 refers to the ratio of the projection area of ​​the portion of the flow channel 12 in the third region 113 to the projection area of ​​the third region 113 .

[0054] By setting the plate body 11 to also include a third area 113, the third area 113 is arranged on a side of the second area 112 away from the first area 111, the flow channel 12 passes through the third area 113, and the arrangement density of the flow channel 12 in the second area 112 is greater than the arrangement density of the flow channel 12 in the third area 113, so that the heat dissipation performance of the first cold plate 10 is concentrated on the middle position of the battery cell 200, so that when the heat generated in the middle of the battery cell 200 is relatively large, the first cold plate 10 can dissipate heat for the battery cell 200 in time.

[0055] Please refer to Figure 1 , the first opening 13 and the second opening 14 are both opened on the same side of the plate body 11. Exemplarily, the plate body 11 includes a first surface 114 and a second surface (not shown) opposite to each other in the third direction Z, and the first opening 13 and the second opening 14 are both opened on the first surface 114. Optionally, the first opening 13 and the second opening 14 can be both arranged at one end of the first surface 114 in the second direction Y, or can be respectively arranged at two ends of the first surface 114 that are far away from each other in the second direction Y, without limitation.

[0056] Optionally, the first opening 13 and the second opening 14 are both opened on the second surface, without limitation. Optionally, the first opening 13 may also be opened on the first surface 114, and the second opening 14 may be opened on the second surface, or the first opening 13 may also be opened on the second surface, and the second opening 14 may be opened on the first surface 114, without limitation.

[0057] Optionally, the plate body 11 also includes a third surface 115 and a fourth surface (not shown) opposite to each other in the second direction Y, and a fifth surface 116 and a sixth surface (not shown) opposite to each other in the first direction X. The first opening 13 and the second opening 14 can be both arranged on any of the above-mentioned surfaces, or can be respectively arranged on different of the above-mentioned surfaces, without limitation.

[0058] By arranging the first opening 13 and the second opening 14 to be opened on the same side of the plate body 11 , the first opening 13 and the second opening 14 can be conveniently connected in series or in parallel, and the arrangement of the first cold plate 10 is also convenient.

[0059] Please refer to Figure 2The first cold plate 10 further includes a first plug connector 15 and a second plug connector 16, both of which are connected to the plate body 11, the first plug connector 15 is connected to the first opening 13, and the second plug connector 16 is connected to the second opening 14. The first plug connector 15 and the second plug connector 16 are both used to connect to a device for conveying a cooling medium.

[0060] Optionally, the first plug connector 15 and the plate body 11 may be an integral structure, or may be connected and fixed by screwing, clamping, riveting, welding, etc., without limitation. Optionally, the second plug connector 16 and the plate body 11 may be an integral structure, or may be connected and fixed by screwing, clamping, riveting, welding, etc., without limitation.

[0061] Optionally, the first plug connector 15 may be made of a material that meets structural strength, high temperature resistance and corrosion resistance, specifically aluminum alloy, copper alloy, stainless steel, titanium alloy and plastic, etc., without limitation. Optionally, the material of the second plug connector 16 is similar to that of the first plug connector 15, which can be used as a reference and will not be described in detail.

[0062] By setting the first plug connector 15 and the second plug connector 16, the first plug connector 15 and the second plug connector 16 are both connected to the plate body 11, the first plug connector 15 is connected to the first opening 13, and the second plug connector 16 is connected to the second opening 14, so that the first opening 13 and the second opening 14 are easy to connect with the device for conveying the cooling medium, which facilitates the arrangement of the first cold plate 10.

[0063] Please refer to Figure 1 The first cold plate 10 and the end plate 20 are an integrated structure. Optionally, the first cold plate 10 and the end plate 20 can be integrally formed by stamping, injection molding, three-dimensional printing, welding, etc., without limitation.

[0064] By setting the first cold plate 10 and the end plate 20 as an integrated structure, the first cold plate 10 and the end plate 20 can be processed and formed before being assembled into the aforementioned box, so that they can be installed into the box at the same time without additional welding and fixing, thereby speeding up the production speed and improving the volume utilization rate of the energy storage device.

[0065] Please refer to Figure 3 The utility model also provides a battery module 1000, comprising a plurality of battery cells 200 and a cold plate assembly 100 in an embodiment of the utility model, wherein the plurality of battery cells 200 are sequentially arranged in a first direction X, the cold plate assembly 100 is connected to the outermost sides of the plurality of battery cells 200, the first cold plate 10 of the cold plate assembly 100 abuts against the battery cell 200, and the end plate 20 of the cold plate assembly 100 is suitable for being relatively fixed to the box body of the energy storage device.

[0066] Optionally, the cold plate assembly 100 may be connected to one side or both sides of the plurality of battery cells 200 in the first direction X, without limitation. Optionally, the cold plate assembly 100 may also be connected to one side or both sides of the plurality of battery cells 200 in the second direction Y, or may also be connected to one side or both sides of the plurality of battery cells 200 in the third direction Z, without limitation.

[0067] Optionally, the battery cell 200 includes a pole core 201 and a pole ear 202, the pole ear 202 is connected to the pole core 201, and the cold plate assembly 100 in the embodiment of the utility model abuts against the pole core 201. Optionally, the battery cell 200 can be a lithium iron phosphate battery cell 200, a ternary NCM (Ni, Co, Mn) battery cell 200, a lithium manganate battery cell 200, a lithium titanate battery cell 200, etc., without limitation.

[0068] The battery module 1000 provided by the utility model adopts multiple battery cells 200 and the cold plate assembly 100 in the embodiment of the utility model. The multiple battery cells 200 are arranged in sequence in the first direction X, the cold plate assembly 100 is connected to the outermost sides of the multiple battery cells 200, the first cold plate 10 of the cold plate assembly 100 is in contact with the battery cell 200, and the end plate 20 of the cold plate assembly 100 is suitable for being relatively fixed to the box body of the energy storage device, thereby realizing the storage and release of electric energy, and at the same time, the volume utilization rate of the energy storage device is high.

[0069] Please refer to Figure 3 , the first cold plate 10 is in contact with the large surface (not shown) of the battery cell 200. Optionally, the large surface refers to the surface with the largest area of ​​the aforementioned pole core 201. Optionally, the narrow surface of the battery cell 200 may also be provided with the first cold plate 10, and the narrow surface 203 refers to the surface of the pole core 201 that is not connected to the pole lug 202 and has an area smaller than the large surface.

[0070] By arranging the first cold plate 10 to abut against the large surface of the battery cell 200 , the contact area between the first cold plate 10 and the battery cell 200 is maximized, thereby improving the heat dissipation effect of the first cold plate 10 on the battery cell 200 .

[0071] Please refer to Figure 3 and Figure 4 The battery module 1000 further includes a second cold plate 300 , which abuts against opposite surfaces of any two adjacent battery cells 200 , and the second cold plate 300 has the same structure as the first cold plate 10 .

[0072] Optional, please refer to Figure 3 There are multiple second cold plates 300, and the multiple second cold plates 300 are respectively arranged between any two adjacent battery cells 200. Optionally, the second cold plate 300 abuts against a large surface of the battery cell 200.

[0073] By providing the second cold plate 300, the second cold plate 300 abuts against the opposite surfaces of any two adjacent battery cells 200. The second cold plate 300 has the same structure as the first cold plate 10, so that at least two large surfaces of each battery cell 200 can dissipate heat, thereby improving the heat dissipation capacity of the battery module 1000 and ensuring the stability and safety of the battery module 1000.

[0074] Please refer to Figure 3 The present invention further provides an energy storage device, comprising a box (not shown), a circulation assembly (not shown) and a battery module 1000 as in the embodiment of the present invention, the box having a receiving cavity, the battery module 1000 being received in the receiving cavity, the end plate 20 of the cold plate assembly 100 of the battery module 1000 being fixed relative to the box, the circulation assembly being connected to the first cold plate 10 of the cold plate assembly 100 and the second cold plate 300 of the battery module 1000, or the energy storage device comprising a box and the cold plate assembly 100 in the embodiment of the present invention, the end plate 20 of the cold plate assembly 100 being fixed relative to the box.

[0075] Optionally, the box body may be made of a material that meets the requirements of structural strength, corrosion resistance and ease of processing, specifically aluminum alloy, iron alloy and fiberglass, etc., without limitation. Optionally, the circulation component is used to transport cooling medium to the cold plate assembly 100 and the second cold plate 300 .

[0076] Optionally, the energy storage device further includes a control system (not shown), the battery module 1000 is electrically connected to the control system, and the control system is used to control the charging and discharging of the battery module 1000 and monitor the status information of the battery module 1000. Optionally, the control system sends the status information of the battery module 1000 to the management personnel so that the management personnel can manage the energy storage device.

[0077] The energy storage device provided by the utility model adopts a box, a circulation component and a battery module 1000 as in the embodiment of the utility model, the box has a accommodating cavity, the battery module 1000 is accommodated in the accommodating cavity, the end plate 20 of the cold plate assembly 100 of the battery module 1000 is relatively fixed to the box, the circulation component is connected to the first cold plate 10 of the cold plate assembly 100 and the second cold plate 300 of the battery module 1000, or the energy storage device includes a box and the cold plate assembly 100 in the embodiment of the utility model, the end plate 20 of the cold plate assembly 100 is relatively fixed to the box, thereby protecting the battery module 1000 and preventing the battery module 1000 from being damaged by external factors, and at the same time, the volume utilization rate of the energy storage device is high.

[0078] Please refer to Figure 3, the first opening 13 and the second opening 14 of the first cold plate 10, and the first opening 13 and the second opening 14 of the second cold plate 300 are both arranged on the same side of the battery module 1000, and the first opening 13 and the second opening 14 are both connected to the circulation assembly. Optionally, the first opening 13 and the second opening 14 of the first cold plate 10, and the first opening 13 and the second opening 14 of the second cold plate 300 are both arranged on one side of the battery module 1000 in the third direction Z. Optionally, the first opening 13 and the second opening 14 of the first cold plate 10, and the first opening 13 and the second opening 14 of the second cold plate 300 are both arranged at the same end of the battery module 1000 in the second direction Y.

[0079] By arranging the first opening 13 and the second opening 14 of the first cold plate 10, and the first opening 13 and the second opening 14 of the second cold plate 300 are all arranged on the same side of the battery module 1000, the first opening 13 and the second opening 14 are both connected to the circulation component, so that the circulation component only needs to be arranged on one side of the battery module 1000, which is convenient for connecting with the first cold plate 10 and the second cold plate 300, thereby improving the assembly speed of the energy storage device and making the layout space of the energy storage device more compact.

[0080] Please refer to Figure 3 , the first opening 13 of the first cold plate 10 and the first opening 13 of the second cold plate 300 are arranged opposite to each other in the first direction X, and the second opening 14 of the first cold plate 10 and the second opening 14 of the second cold plate 300 are arranged opposite to each other in the first direction X. Optionally, there are two first cold plates 10, there are multiple second cold plates 300, the two first cold plates 10 are respectively arranged on both sides of the battery module 1000 in the first direction X, the first openings 13 of the two first cold plates 10 and the first openings 13 of the multiple first cold plates 10 are arranged opposite to each other in the first direction X, and the second openings 14 of the two first cold plates 10 and the second openings 14 of the multiple first cold plates 10 are arranged opposite to each other in the first direction X.

[0081] By arranging the first opening 13 of the first cold plate 10 and the first opening 13 of the second cold plate 300 to be opposite to each other in the first direction X, and the second opening 14 of the first cold plate 10 and the second opening 14 of the second cold plate 300 to be opposite to each other in the first direction X, the circulation components only need to be arranged at the first opening 13 and the second opening 14, so that the arrangement space of the energy storage device is more compact.

[0082] Please refer to Figure 3 , any two adjacent first openings 13, one of which is suitable for inputting cooling medium, and the other first opening 13 is suitable for outputting cooling medium. Optionally, two second openings 14 corresponding to the aforementioned two adjacent first openings 13, one of which is suitable for outputting cooling medium, and the other second opening 14 is suitable for inputting cooling medium.

[0083] By setting any two adjacent first openings 13, one of the first openings 13 is suitable for inputting cooling medium, and the other first opening 13 is suitable for outputting cooling medium, so that the cooling medium output from the flow channel 12 and the cooling medium input into the flow channel 12 are staggered at the first opening 13 and the second opening 14, thereby improving the temperature uniformity of the battery module 1000 and ensuring the stability of the heat dissipation capacity of the battery module 1000.

[0084] Please refer to Figure 3 , an electrical equipment (not shown), including an electrical device (not shown) and the energy storage device in the embodiment of the utility model, the energy storage device is suitable for supplying power to the electrical device, or, the electrical equipment includes the electrical device and the battery module 1000 in the embodiment of the utility model, or, the electrical equipment includes the electrical device and the cold plate assembly 100 in the embodiment of the utility model.

[0085] Optionally, the electrical device may be a vehicle, a household appliance, a commercial appliance, an industrial appliance, etc., without limitation. The energy storage device in the embodiment of the utility model realizes the storage of electrical energy and supplies power to the electrical device by converting between chemical energy and electrical energy. The energy storage device in the embodiment of the utility model may be a power battery, a household energy storage battery, a commercial energy storage battery, an industrial energy storage battery, etc., without limitation.

[0086] The electrical equipment adopts an electrical device and an energy storage device in an embodiment of the utility model, the energy storage device is suitable for supplying power to the electrical device, or the electrical equipment includes the electrical device and the battery module 1000 in an embodiment of the utility model, or the electrical equipment includes the electrical device and the cold plate assembly 100 in an embodiment of the utility model, thereby realizing the storage and output of electrical energy. At the same time, the cold plate assembly 100 can dissipate heat for the energy storage device, and the volume utilization rate of the energy storage device is high.

[0087] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described 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 cannot be understood as a limitation on the present invention.

[0088] What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A cold plate assembly, characterized in that: include: A first cold plate, adapted to abut against a battery cell of the energy storage device; The end plate is connected and fixed to the first cold plate, and the end plate is suitable for being fixed relative to the box body of the energy storage device.

2. The cold plate assembly according to claim 1, characterized in that The first cold plate includes a plate body, the plate body is provided with a flow channel, a first opening and a second opening, the first opening and the second opening are both communicated with the flow channel, and the flow channel is bent and extended.

3. The cold plate assembly according to claim 2, characterized in that The plate body includes a first area and a second area, the first area and the second area are arranged in sequence, the flow channel passes through the first area and the second area, and the arrangement density of the flow channel in the second area is greater than the arrangement density of the flow channel in the first area.

4. The cold plate assembly according to claim 3, characterized in that The plate body further includes a third region, which is disposed on a side of the second region away from the first region, through which the flow channels pass, and wherein an arrangement density of the flow channels in the second region is greater than an arrangement density of the flow channels in the third region.

5. The cold plate assembly according to claim 2, characterized in that The first opening and the second opening are both opened on the same side of the plate body.

6. The cold plate assembly according to claim 2, characterized in that The first cold plate further includes a first plug connector and a second plug connector, wherein the first plug connector and the second plug connector are both connected to the plate body, the first plug connector is in communication with the first opening, and the second plug connector is in communication with the second opening.

7. The cold plate assembly according to claim 1, characterized in that The first cold plate and the end plate are an integrated structure.

8. A battery module, characterized in that: It comprises a plurality of battery cells and a cold plate assembly as described in any one of claims 1 to 7, wherein the plurality of battery cells are arranged in sequence in a first direction, the cold plate assembly is connected to the outermost sides of the plurality of battery cells, the first cold plate of the cold plate assembly abuts against the battery cells, and the end plate of the cold plate assembly is suitable for being fixed relative to a box body of an energy storage device.

9. The battery module according to claim 8, characterized in that: The first cold plate abuts against a large surface of the battery cell.

10. The battery module according to claim 8, characterized in that: The battery module further includes a second cold plate, the second cold plate abuts against opposite surfaces of any two adjacent battery cells, and the second cold plate has the same structure as the first cold plate.

11. An energy storage device, characterized in that: The invention comprises a box, a circulation assembly and a battery module as claimed in any one of claims 8 to 10, wherein the box has a receiving cavity, the battery module is received in the receiving cavity, the end plate of the cold plate assembly of the battery module is relatively fixed to the box, and the circulation assembly is connected to the first cold plate of the cold plate assembly and the second cold plate of the battery module; Alternatively, the energy storage device comprises a box body and a cold plate assembly as described in any one of claims 1 to 7, and an end plate of the cold plate assembly is relatively fixed to the box body.

12. The energy storage device according to claim 11, characterized in that: The first opening and the second opening of the first cold plate, and the first opening and the second opening of the second cold plate are all arranged on the same side of the battery module, and the first opening and the second opening are both communicated with the circulation assembly.

13. The energy storage device according to claim 12, characterized in that: The first opening of the first cold plate and the first opening of the second cold plate are arranged opposite to each other in a first direction, and the second opening of the first cold plate and the second opening of the second cold plate are arranged opposite to each other in the first direction.

14. The energy storage device according to claim 13, characterized in that: Among any two adjacent first openings, one of the first openings is suitable for inputting cooling medium, and the other first opening is suitable for outputting cooling medium.

15. An electrical equipment, characterized in that: comprising an energy storage device as claimed in any one of claims 11 to 14; Alternatively, the electrical equipment comprises a battery module as claimed in any one of claims 8 to 10; Alternatively, the electrical equipment includes the cold plate assembly according to any one of claims 1-7.

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