A battery module and a battery assembly

Abstract

The application discloses a battery module and a battery assembly. The battery module comprises a battery cell, an inter-battery cell support and an upper cover inter-battery cell support. The upper cover is provided with an inlet channel and an outlet channel. The cooling flow channel, the inlet channel and the outlet channel are combined to form a cooling structure for cooling the battery cell. The battery module disclosed in the application is provided with the cooling structure on the inter-battery cell support. The cooling flow channel of the inter-battery cell support can simultaneously cool the battery cells located on both sides of the inter-battery cell support, so that the purpose of heat management and heat runaway suppression of the battery module is achieved, and the heat management and heat runaway management capability of the battery module is effectively improved.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a battery module and battery assembly. Background Technology

[0002] Soft-pack cells are cells encapsulated using an aluminum-plastic composite film. Battery modules composed of soft-pack cells are assembled by applying grouping force through end plates and side plates. The end plates and side plates are fastened and compacted by steel strips to ensure that the soft-pack cells are in a compressed state.

[0003] The presence of filler material between the pouch cells in a battery module makes it difficult to arrange cooling facilities, thus limiting the improvement of the battery module's cooling performance and thermal runaway protection capabilities. Utility Model Content

[0004] This application proposes a battery module to solve the problem of difficulty in arranging cooling facilities between the pouch cells of a battery module, thereby improving the cooling performance and thermal runaway protection capability of the battery module. This application also proposes a battery assembly having the above-mentioned battery module.

[0005] To achieve the above objectives, this application provides a battery module, comprising: battery cells arranged side-by-side along a first direction; a cell-to-cell support member located between two adjacent battery cells, the cell-to-cell support member including a cooling channel, the cooling channel including an inlet and an outlet; and a top cover located on the top of the battery module, including a liquid inlet channel and a liquid outlet channel, the liquid inlet channel including an inlet and the liquid outlet channel including an outlet, the liquid inlet channel being used to connect to the inlet of the cooling channel of the two adjacent cell-to-cell support members, the liquid outlet channel being used to connect to the outlet of the cooling channel of the two adjacent cell-to-cell support members, the liquid inlet channel and the liquid outlet channel being arranged in a second direction; the second direction is perpendicular to the first direction, and the second direction and the first direction are parallel to the plane of the top cover.

[0006] Optionally, in the above battery module, the top cover includes a top plate and a channel plate, the top plate and the channel plate are stacked along a third direction, the third direction is perpendicular to the plane where the top cover is located; the top plate includes the liquid inlet and the liquid outlet through the top plate; the channel plate includes a first channel groove and a second channel groove through the channel plate, the first channel groove and the liquid inlet form the liquid inlet channel, and the second channel groove and the liquid outlet form the liquid outlet channel.

[0007] Optionally, in the above-mentioned battery module, the channel plate is a sealed structural adhesive plate.

[0008] Optionally, in the above-mentioned battery module, the inlet of the cooling channel is located in the middle of the cooling channel along the second direction, and the outlet of the cooling channel is located at both ends of the cooling channel along the second direction.

[0009] Optionally, in the above-mentioned battery module, the cell support includes a U-shaped plate, a first baffle, and a second baffle; the two side plates of the U-shaped plate correspond to the two sides of the cell along the second direction, and the projections of the liquid inlet and the liquid outlet along the third direction are located within the projection of the open end of the U-shaped plate along the third direction; the first baffle is connected to the bottom plate of the U-shaped plate, and the second baffle is arranged on both sides of the first baffle in the second direction, the second baffle is located between the first baffle and the side plate, and the second baffle is connected to the top cover; the inlet is formed between the two second baffles, and the outlet is formed between the second baffle and the side plate, the first baffle is located in the middle of the inlet along the second direction, and the first baffle is used to divert the coolant.

[0010] Optionally, in the above-mentioned battery module, the inter-cell support is at least one of plastic, closed-cell foam, and thermally conductive adhesive.

[0011] Optionally, in the above-mentioned battery module, the battery cell is a pouch cell; the battery cell is a solid-state cell or a liquid-state cell.

[0012] Secondly, this solution discloses a battery assembly, including a battery module and a liquid supply component; the battery module is the battery module described in any of the above solutions; the liquid supply component is used to provide coolant, and the liquid supply component is connected to the liquid inlet and liquid outlet of the battery module.

[0013] Optionally, in the above battery assembly, the liquid supply component includes a coolant tank, a pump, a first valve, a second valve, and an accumulator; the coolant tank is connected to the inlet of the pump, the first valve is provided at the outlet of the pump, the first valve is used to connect the pump to the accumulator or the liquid inlet, the accumulator is provided with a pressure sensor, the pressure sensor is used to detect the pressure of the accumulator; the accumulator is connected to the liquid inlet through the second valve; the coolant tank is connected to the liquid outlet.

[0014] Optionally, in the battery assembly described above, a heat exchanger is provided between the outlet and the coolant tank, and the heat exchanger is used to cool the coolant.

[0015] This application provides a battery module including battery cells, inter-cell support members, and a top cover. The inter-cell support members have cooling channels, and the top cover has liquid inlet and liquid outlet channels. The cooling channels, liquid inlet and liquid outlet channels combine to form a cooling structure for cooling the battery cells. The battery module disclosed in this solution has a cooling structure arranged on the inter-cell support member. The cooling channels of the inter-cell support member can simultaneously cool the battery cells located on both sides of the inter-cell support member, achieving the purpose of thermal management of the battery module and suppressing thermal runaway, effectively improving the thermal management and thermal runaway management capabilities of the battery module.

[0016] This application also discloses a battery assembly, including a battery module and a coolant supply assembly. The coolant supply assembly is used to supply coolant to the battery module. The battery module is the battery module disclosed in any of the above-described solutions. Since the battery module has the above-described technical effects, the battery assembly having the battery module also has the same technical effects, and will not be described in detail here. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0018] Figure 1 This is a schematic diagram of the battery module provided in the embodiments of this application;

[0019] Figure 2 This is a top view of the battery module provided in the embodiments of this application;

[0020] Figure 3 yes Figure 2 Sectional view along AA;

[0021] Figure 4 This is a schematic diagram of the structure of the battery module (without a top plate) provided in the embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the liquid supply assembly provided in the embodiments of this application.

[0023] in:

[0024] 1-Battery cell; 2-Cell support; 21-Cooling channel; 211-Inlet; 212-Outlet; 22-U-shaped plate; 23-First baffle; 24-Second baffle; 3-Top cover; 31-Liquid inlet; 32-Liquid outlet; 33-Top plate; 34-Channel plate; 341-First channel groove; 342-Second channel groove; 4-Liquid supply assembly; 41-Coolant tank; 42-Pump; 43-First valve; 44-Second valve; 45-Accumulator; 46-Heat exchanger; 47-Oil suction filter; 48-Filter; 49-Pressure sensor; 5-End plate; 6-Side plate; 7-Insulating end plate. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0026] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0027] It should be understood that the terms "system," "apparatus," "unit," and / or "module" used in this application are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0028] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0029] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0030] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] A battery module consists of battery cells and a frame structure. The frame structure provides mechanical support and protection for the battery cells, such as... Figure 1 As shown, the frame structure includes end plate 5, side plate 6, top cover 3, and base frame.

[0032] The battery module includes multiple cells, which are arranged side by side along a first direction. Inter-cell support members are provided between two adjacent cells, and the inter-cell support members are arranged at intervals along the first direction.

[0033] A frame structure surrounds the overall structure consisting of the battery cell and its supporting components. End plates are arranged opposite each other in a first direction, and side plates are arranged opposite each other in a second direction. The side plates and end plates are connected and combined to form a frame structure surrounding the battery cell. The end plates and side plates are fixed by steel strips to protect the circumference of the battery cell. The first and second directions are perpendicular and parallel to the plane of the top cover.

[0034] The top cover and the bottom frame are located at the top and bottom of the frame structure formed by the end plates and side plates, respectively, to protect and support the top and bottom of the battery cell.

[0035] In one aspect, this application discloses a battery module. The battery module includes a battery cell 1, a cell support member 2, and a top cover 3.

[0036] The battery module includes multiple battery cells 1, which are arranged side by side along a first direction;

[0037] The inter-cell support 2 is located between two adjacent cells 1, and multiple inter-cell support 2 are also arranged side by side along the first direction. The function of the inter-cell support 2 is to buffer the expansion and contraction of the cells 1 during charging and discharging, as well as to achieve insulation and heat insulation.

[0038] The top cover 3 is located on top of the battery cell 1.

[0039] Optionally, cell 1 is a pouch cell, or cell 1 is a solid-state cell or a liquid-state cell.

[0040] The battery cell 1 module disclosed in this solution has a cooling channel 21 set in the support member 2 between the battery cells, and an inlet channel and an outlet channel set in the upper cover 3. The cooling channel 21, the inlet channel and the outlet channel are combined to form a cooling structure for cooling the battery cell 1.

[0041] Specifically, the cooling channel 21 of the inter-cell support 2 includes an inlet 211 and an outlet 212; the liquid inlet channel is used to connect the inlets 211 of the cooling channels 21 of two adjacent inter-cell support 2, and the liquid outlet channel is used to connect the outlets 212 of the cooling channels 21 of two adjacent inter-cell support 2. The liquid inlet channel includes an inlet 31, and the liquid outlet channel includes an outlet 32.

[0042] The coolant enters the inlet channel through the inlet port 31, then enters the cooling channel 21 of the multiple cell support members 2 connected to the inlet channel, and then enters the outlet channel through the outlet 212 of the cooling channel 21, and finally is discharged through the outlet port 32.

[0043] The inter-cell support 2 is parallel to the cell 1, and the large surface of the inter-cell support 2 is in contact with the large surface of the cell 1. The coolant in the cooling channel 21 of the inter-cell support 2 cools the large surface of the cell 1. The battery module disclosed in this solution has a cooling structure arranged on the inter-cell support 2. The cooling channel 21 of the inter-cell support 2 can simultaneously cool the cells 1 located on both sides of the inter-cell support 2, thereby achieving the purpose of thermal management of the battery module and suppressing thermal runaway, effectively improving the thermal management and thermal runaway management capabilities of the battery module.

[0044] Optionally, the liquid inlet 31 and the liquid outlet 32 ​​are provided through the upper cover 3. The liquid inlet channel and the liquid outlet channel are located on the side of the upper cover 3 facing the battery cell 1. Optionally, the liquid inlet channel and the liquid outlet channel are channel grooves opened on the side of the upper cover 3 facing the battery cell 1. The liquid inlet channel corresponds to the position of the inlet 211 of the cooling channel 21, and the liquid outlet channel corresponds to the position of the outlet 212 of the cooling channel 21.

[0045] Optionally, the inlet channel and the outlet channel extend in a direction parallel to the first direction, and the inlet channel and the outlet channel are arranged side by side in the second direction.

[0046] The inlet and outlet channels are not connected to each other; after the upper cover 3 is attached to the battery cell 1, the part of the upper cover 3 without the inlet and outlet channels is sealed with the battery cell 1 to prevent the coolant from flowing arbitrarily between the upper cover 3 and the battery cell 1, and to ensure the circulation of the coolant in the inlet channel, cooling channel 21 and outlet channel, thereby improving the cooling effect on the battery cell 1.

[0047] In this design, both the inlet and outlet channels are located on the upper cover 3. The coolant flows downward through the inlet channel of the upper cover 3, passes through the cooling channel 21, and then flows upward back to the upper cover 3. The flow of coolant in the cooling channel 21 requires a certain pressure, which can act on the battery cell 1 and provide support for it.

[0048] Continue reading Figure 2 , Figure 3 and Figure 4 The top cover 3 includes a top plate 33 and a channel plate 34, which are stacked along a third direction, and the channel plate 34 is located between the top plate 33 and the battery cell 1.

[0049] Specifically, the top plate 33 includes an inlet 31 and an outlet 32 ​​that penetrate the top plate 33;

[0050] The channel plate 34 includes a first channel groove 341 and a second channel groove 342. The first channel groove 341 and the second channel groove 342 penetrate the channel plate 34 along a third direction. The length of the first channel groove 341 and the second channel groove 342 along the first direction is at least equal to the overall length of the plurality of battery cells 1 and the plurality of battery cell support members 2. The first channel groove 341 corresponds to and is connected to the liquid inlet 31 and the liquid outlet 211, forming a liquid inlet channel. The second channel groove 342 corresponds to and is connected to the liquid outlet 32 ​​and the liquid outlet 212, forming a liquid outlet channel.

[0051] The liquid inlet 31 and the liquid outlet 32 ​​can be located at one end of the top plate 33 along the first direction, or they can be located at both ends of the top plate 33 along the second direction.

[0052] In some embodiments, the channel plate 34 is fixedly connected to the top plate 33. Optionally, the channel plate 34 and the top plate 33 are glued together, or the channel plate 34 and the top plate 33 are integrally formed, or the channel plate 34 and the top plate 33 are connected by other methods that can achieve a sealed connection between the channel plate 34 and the top plate 33, all of which are within the scope of protection of this application. The side of the top plate 33 connected to the channel plate 34 is a plane.

[0053] In other embodiments, the channel plate 34 is fixedly connected to the end plate. For example... Figure 4 As shown, an insulating end plate 7 is included between the end plate and the cell 1, and a channel plate 34 is fixedly connected to the insulating end plate 7. Optionally, the channel plate 34 and the insulating end plate 7 are bonded together, or the channel plate 34 and the insulating end plate 7 are integrally formed, or the channel plate 34 and the insulating end plate 7 are connected by other methods that can achieve a sealed connection between the channel plate 34 and the insulating end plate, all of which are within the scope of protection of this application.

[0054] In some embodiments, the channel plate 34 is a sealing structure adhesive plate.

[0055] The channel plate 34 is not limited to the sealing structure adhesive plate, but can also be a plate structure made of other materials, all of which are within the scope of protection of this application.

[0056] Continue reading Figure 3 The cooling channel 21 includes one inlet 211 and two outlets 212. The inlet 211 is located in the middle of the cooling channel 21 along the second direction, and the two outlets 212 are located at both ends of the cooling channel 21 along the second direction. Alternatively, the inlet 211 and the two outlets 212 are arranged along the second direction, with the inlet 211 located between the two outlets 212 and the two outlets 212 located at both ends of the cooling channel 21. Correspondingly, the top plate 33 includes one liquid inlet 31 and two liquid outlets 32, one liquid inlet channel and two liquid outlet channels. Optionally, the width of the liquid inlet channel along the second direction is greater than the width of the liquid outlet channels.

[0057] The coolant enters the inlet 211 of the cooling channel 21 through the inlet 31, flows through the middle of the cooling channel 21 to both ends of the cooling channel 21, and finally enters the outlet channel corresponding to and connected to the outlet 212, and is discharged through the outlet 32.

[0058] In this cooling method, the coolant flows from the middle of the cooling channel to both ends, shortening the flow path and time of the coolant within the cooling channel, thus improving the cooling efficiency of cell 1.

[0059] In other embodiments, the cooling channel 21 includes an inlet 211 and an outlet 212, located at opposite ends of the cooling channel 21 along a second direction. Correspondingly, the top plate 33 includes a liquid inlet 31 and an liquid outlet 32, a liquid inlet channel and a liquid outlet channel, wherein the width of the liquid inlet channel along the second direction is equal to or greater than the width of the liquid outlet channel.

[0060] In this cooling method, the coolant flows from one end of the cooling channel to the other end, resulting in a simple flow path that ensures effective cooling of cell 1.

[0061] In some embodiments, the cooling channel 21 can be directly formed within the inter-cell support 2. The coolant exchanges heat with the cell 1 through the inter-cell support 2.

[0062] In other embodiments, the inter-cell support 2 has a hollow structure, which, together with the cell 1, forms a cooling channel 21. The coolant directly contacts the cell 1, carrying away the heat from the cell 1.

[0063] In an embodiment where the cell 1 support has a hollow structure, the cooling channel 21 can be partially opened in the cell support 2 and the other part located between the hollow structure and the cell 1.

[0064] Continue reading Figure 3 This is an embodiment where the inter-cell support member 2 has a hollow structure. The inter-cell support member 2 includes a U-shaped plate 22, a first baffle 23, and a second baffle 24.

[0065] The U-shaped plate 22 includes a base plate and two side plates, which are located at both ends of the base plate along a second direction. Both the base plate and the side plates of the U-shaped plate 22 are attached to the battery cell 1. The projections of the liquid inlet 31 and the liquid outlet 32 ​​along a third direction are located at the projections of the open end of the U-shaped plate 22 along a third direction, that is, the liquid inlet 31 and the liquid outlet 32 ​​are located inside the open end of the U-shaped plate 22, and a space for the flow of coolant is formed inside the U-shaped plate 22.

[0066] The first baffle 23 is connected to the bottom plate of the U-shaped plate 22, and the first baffle 23 corresponds to the liquid inlet channel; the second baffle 24 is connected to the top cover 3, and in the second direction, the second baffle 24 is located on both sides of the first baffle 23, and the second baffle 24 is located between the first baffle 23 and the side plate.

[0067] An inlet 211 of a cooling channel 21 is formed between the two second baffles 24, and an outlet 212 of the cooling channel 21 is formed between the second baffles 24 and the side plate.

[0068] The first baffle 23 diverts the coolant entering through the inlet 211 to both sides of the first baffle 23. After passing through the flow channel between the first baffle 23 and the second baffle 24, the coolant enters the flow channel between the second baffle 24 and the side plate, and finally enters the liquid outlet channel through the outlet 212.

[0069] The hollow area of ​​the inter-cell support component 2 disclosed in this solution is large enough, which correspondingly increases the contact area between the coolant and the large surface of the cell 1, resulting in a good cooling effect on the cell 1.

[0070] Heat exchange also occurs between the coolant and the inter-cell support 2. Specifically, the inter-cell support 2 absorbs heat from the cell 1, while the coolant absorbs heat from the inter-cell support 2.

[0071] Optionally, a flow guiding structure consisting of multiple sets of first baffles 23 and second baffles 24 is arranged between the first baffle 23 and the side plate.

[0072] Secondly, this application also discloses a battery assembly, including a battery module and a liquid supply component 4.

[0073] The liquid supply assembly 4 is used to supply coolant to the battery module.

[0074] The battery module is any of the battery modules disclosed in the above solutions. Since the battery module has the above-mentioned technical effects, the battery assembly with the battery module also has the same technical effects, which will not be described in detail here.

[0075] In some embodiments, such as Figure 5 As shown, the liquid supply assembly 4 includes an accumulator 45, a coolant tank 41, a pump 42, a first valve 43, and a second valve 44.

[0076] The coolant tank 41 is connected to the inlet of the pump 42. The outlet 212 of the pump 42 is equipped with a first valve 43. The first valve 43 is used to control the connection between the pump 42 and the accumulator 45 or the inlet 31. A pressure sensor 49 is provided between the first valve 43 and the accumulator 45 to detect the pressure of the accumulator 45. The accumulator 45 is connected to the inlet 31 through a second valve 44. The coolant tank 41 is connected to the outlet 32.

[0077] Optionally, the coolant is pressurized oil.

[0078] The liquid supply component 4 is used to maintain and replenish the cooling hydraulic pressure in the battery cell 1, and to maintain the clamping force of the battery cell 1 under normal conditions, ensuring the reliable operation of the solid soft-pack battery cell. When maintaining pressure, the liquid supply component 4 does not require the pump 42 to work continuously, which is energy-saving and environmentally friendly.

[0079] The large surface of the pouch battery needs to be supported at all times. In the embodiment where the hollowed-out area of ​​the inter-cell support 2 and the cell 1 form a cooling channel 21, the cooling channel 21 needs to be filled with coolant. The coolant filling the cooling channel has a certain pressure. The coolant and the inter-cell support 2 work together to compress and support the large surface of the cell 1, meeting the special pressure requirements of scenarios such as solid-state cells. At this time, after the pressure of the coolant in the cooling channel 21 reaches the pressure required to compress and support the large surface of the cell 1, the liquid supply component 4 stops supplying coolant to the cooling channel 21, and the pressure is maintained.

[0080] Specifically, when the large surface of cell 1 requires pressurized coolant, the second valve 44 opens, and the accumulator 45 provides pressurized coolant to the battery module, providing squeezing and supporting pressure to the large surface of cell 1.

[0081] When the liquid pressure in the accumulator 45 is lower than the lower threshold, the first valve 43 opens, and the coolant in the coolant tank 41 is supplied to the accumulator 45 through the pump 42 to replenish the accumulator 45 and rebuild its pressure.

[0082] When the pressure sensor detects that the pressure in the accumulator 45 has reached the upper limit of the threshold, the replenishment of liquid is stopped.

[0083] When cell 1 needs cooling or when cell 1 experiences thermal runaway, the first valve 43 opens and the second valve 44 closes. The coolant in the coolant tank 41 is supplied to the battery module through the pump 42. The coolant cools cell 1, thus achieving thermal management of cell 1 and emergency cooling when cell 1 runs away.

[0084] Optionally, a heat exchanger 46 is provided between the outlet 32 ​​and the coolant tank 41. The heat exchanger 46 is used to cool the coolant and remove heat from the battery assembly to ensure that the battery cell 1 is always kept at a suitable temperature.

[0085] To reduce the entry of impurities into the cooling structure formed by the combination of cooling channel 21, inlet channel and outlet channel, optionally, an oil suction filter element 47 is installed on the connecting pipeline between the coolant tank 41 and the pump 42. The oil suction filter element 47 is a coarse filter element, which prevents the pump from sucking in large mechanical impurities and protects the pump. A filter 48 (pressure pipeline filter or high-pressure filter) is installed between the pump 42 and the first valve 43 to finely filter the coolant supplied to the accumulator or battery cell and protect the downstream devices of the pump.

[0086] The inter-cell support 2 can be at least one of plastic, closed-cell foam, and thermally conductive adhesive.

[0087] The battery assembly disclosed in this solution is applicable not only to liquid pouch cells but also to solid pouch cells, solving the problem of difficult layout of cooling facilities for pouch cells and improving the thermal management and thermal runaway suppression capabilities of pouch batteries.

[0088] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A battery module, characterized in that, include: Battery cells (1) are arranged side by side along the first direction; Cell support (2) is located between two adjacent cells (1). Cell support (2) includes a cooling channel (21) and the cooling channel (21) includes an inlet (211) and an outlet (212). The top cover (3) is located on the top of the battery module and includes an inlet channel and an outlet channel. The inlet channel includes an inlet (31) and the outlet channel includes an outlet (32). The inlet channel is used to connect the inlet (211) of the cooling channel (21) of the adjacent two cell support members (2). The outlet channel is used to connect the outlet (212) of the cooling channel (21) of the adjacent two cell support members (2). The inlet channel and the outlet channel are arranged in the second direction. The second direction is perpendicular to the first direction, and the second direction and the first direction are parallel to the plane in which the upper cover (3) is located.

2. The battery module according to claim 1, characterized in that, The top cover (3) includes a top plate (33) and a channel plate (34), the top plate (33) and the channel plate (34) are stacked along a third direction, the third direction is perpendicular to the plane where the top cover (3) is located; The top plate (33) includes the liquid inlet (31) and the liquid outlet (32) that are opened through the top plate (33). The channel plate (34) includes a first channel groove (341) and a second channel groove (342) that are opened through the channel plate (34). The first channel groove (341) and the liquid inlet (31) form the liquid inlet channel, and the second channel groove (342) and the liquid outlet (32) form the liquid outlet channel.

3. The battery module according to claim 2, characterized in that, The channel plate (34) is a sealed structural adhesive plate.

4. The battery module according to claim 1, characterized in that, The inlet (211) of the cooling channel (21) is located in the middle of the cooling channel (21) along the second direction, and the outlet (212) of the cooling channel (21) is located at both ends of the cooling channel along the second direction.

5. The battery module according to claim 4, characterized in that, The cell support (2) includes a U-shaped plate (22), a first baffle (23), and a second baffle (24); The two side plates of the U-shaped plate (22) correspond to the two sides of the battery cell (1) along the second direction, and the projection of the liquid inlet (31) and the liquid outlet (32) along the third direction is located within the projection of the open end of the U-shaped plate (22) along the third direction; The first baffle (23) is connected to the bottom plate of the U-shaped plate (22), and the second baffle (24) is provided on both sides of the first baffle (23) in the second direction. The second baffle (24) is located between the first baffle (23) and the side plate, and the second baffle (24) is connected to the top cover (3). The inlet (211) is formed between the two second baffles (24), and the outlet (212) is formed between the second baffle (24) and the side plate. The first baffle (23) is located in the middle of the inlet (211) along the second direction and is used to divert the coolant.

6. The battery module according to claim 1, characterized in that, The inter-cell support (2) is at least one of plastic, closed-cell foam and thermally conductive adhesive.

7. The battery module according to claim 1, characterized in that, The battery cell (1) is a pouch cell; The battery cell (1) is a solid-state battery cell or a liquid-state battery cell.

8. A battery assembly, characterized in that, Including battery modules and liquid supply components (4); The battery module is the battery module according to any one of claims 1-7; The liquid supply assembly (4) is used to supply coolant, and the liquid supply assembly (4) is connected to the liquid inlet (31) and liquid outlet (32) of the battery module.

9. The battery assembly according to claim 8, characterized in that, The liquid supply assembly (4) includes a coolant tank (41), a pump (42), a first valve (43), a second valve (44), and an accumulator (45). The coolant tank (41) is connected to the inlet of the pump (42), and the outlet (212) of the pump (42) is provided with the first valve (43). The first valve (43) is used to connect the pump (42) to the accumulator (45) or the liquid inlet (31). The accumulator (45) is provided with a pressure sensor (49), which is used to detect the pressure of the accumulator (45). The accumulator (45) is connected to the liquid inlet (31) through the second valve (44); The coolant tank (41) is connected to the outlet (32).

10. The battery assembly according to claim 9, characterized in that, A heat exchanger (46) is provided between the outlet (32) and the coolant tank (41), and the heat exchanger (46) is used to cool the coolant.

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