Battery module and battery

Abstract

The utility model relates to a battery and a battery module, the battery module comprises a single-row battery cell and a cooling plate, and the single-row battery cell comprises a plurality of battery cell monomers arranged in parallel, an end plate and a middle support plate end plate. And the end plates and the middle supporting plate are fixedly connected with the cooling plates on the two sides of the single-row battery cells, so that stable and reliable support is formed between the cooling plates and the single-row battery cells. Moreover, the middle supporting plate supports the single-row battery cells from the middle position, so that the strength of the single-row battery cells can be improved. Therefore, the structural strength of the battery module is relatively high, and the structural strength of the battery can be improved. Each single-row battery cell is accommodated in the accommodating space formed by the two adjacent cooling plates, so that the cooling plates are distributed on the two sides of each single-row battery cell, and each battery cell monomer can be in heat conduction fit with the cooling plates. Even if the battery cell monomer is positioned in the middle of the battery module, the battery cell monomer can exchange heat with the cooling plate, so that the generated heat can be quickly conducted to the cooling plate.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a battery module and a battery. Background Art

[0002] As new energy vehicles become more popular, the increase in battery capacity has a greater impact on product competitiveness. Batteries with larger capacity need to pack more cells and have larger sizes. As the size increases, the structural strength of the battery will decrease to a certain extent, resulting in low reliability. Utility Model Content

[0003] Based on this, it is necessary to provide a battery module and a battery that can improve the structural strength of the battery in order to address the above-mentioned problems.

[0004] A battery module, comprising:

[0005] A single-row battery cell comprises a plurality of battery cells arranged in parallel, an end plate for clamping the plurality of battery cells, and a middle support plate distributed between the plurality of battery cells; and

[0006] A cooling plate, wherein a plurality of the cooling plates are arranged at intervals and a receiving space is formed between two adjacent cooling plates, and the plurality of cooling plates form at least two receiving spaces;

[0007] Among them, each of the accommodating spaces accommodates a single-row battery cell, each of the single-row battery cells is thermally coordinated with the cooling plates on both sides, and the end plate and the middle support plate of each single-row battery cell are fixedly connected to the cooling plates on both sides of the single-row battery cell.

[0008] In one of the embodiments, a rivet hole is opened at a position corresponding to each of the cooling plates and the end plate and the middle support plate, and the cooling plate is riveted and fixed to the end plate and the middle support plate by inserting rivets into the rivet holes.

[0009] In one of the embodiments, at least two middle support plates are distributed between the plurality of battery cells, and the distance between two adjacent middle support plates is 400 mm to 800 mm.

[0010] In one embodiment, the distance between two adjacent cooling plates is 148 mm to 300 mm.

[0011] In one embodiment, each of the cooling plates includes a water inlet pipe and a water outlet pipe connected to the cooling channel, and the water inlet pipe and the water outlet pipe are located at the same end in the longitudinal direction of the cooling plate.

[0012] In one embodiment, the cooling plate includes a cooling cover plate, a flow channel plate and a reinforcing plate. A stamping groove is stamped on one side of the flow channel plate, and a convex rib is formed at a position corresponding to the stamping groove on the other side. The cooling cover plate is covered on the side of the flow channel plate where the stamping groove is formed, and cooperates with the stamping groove to form a cooling flow channel. The reinforcing plate is attached to the side of the flow channel plate where the convex rib is formed and forms a avoidance position for the convex rib.

[0013] In one of the embodiments, the stamping area where the stamping groove and the convex rib are located is located in the middle of the flow channel plate, and the reinforcing plate is annular and extends along the circumference of the stamping area.

[0014] In one embodiment, the thickness of the reinforcing plate is not less than the height of the rib.

[0015] In one of the embodiments, each of the cooling plates is provided with rivet holes at positions corresponding to the end plates and the middle support plate, and the rivet holes are distributed in the area where the reinforcing plate is located.

[0016] A battery comprises a bottom shell, an upper cover and a battery module as described in any one of the above preferred embodiments, wherein the upper cover cooperates with the bottom shell to form a receiving cavity, and the battery module is received in the receiving cavity.

[0017] The battery module and battery, the end plate and the middle support plate are fixedly connected to the cooling plates on both sides of the single-row battery cells, so that a stable and reliable support is formed between the cooling plate and the single-row battery cells. Moreover, the middle support plate provides support for the single-row battery cells from the middle position, thereby improving the strength of the single-row battery cells. Therefore, the structural strength of the battery module is relatively high, and the structural strength of the battery can be improved. Since each single-row battery cell is accommodated in the accommodation space formed by two adjacent cooling plates, cooling plates are distributed on both sides of each single-row battery cell, thereby ensuring that each battery cell can achieve thermal coordination with the cooling plate. Even the battery cell located in the middle position of the battery module can exchange heat with the cooling plate to quickly transfer the generated heat to the cooling plate, so the heat dissipation performance of the battery is also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a battery in a preferred embodiment of the utility model;

[0020] Figure 2 for Figure 1 An exploded view of a battery module in the battery shown;

[0021] Figure 3 for Figure 2 The assembly diagram of the battery module shown;

[0022] Figure 4 for Figure 3 Schematic diagram of assembly of water cooling plate and end plate in the battery module shown;

[0023] Figure 5 for Figure 3 A cross-sectional view of the battery module shown;

[0024] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the battery module shown. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] The utility model discloses an electric device and a battery, wherein the electric device comprises the battery and can be provided with electric energy by the battery. The battery can be used alone or multiple batteries can be connected in parallel, in series or in combination of parallel and series to form a larger battery pack for use.

[0032] The above-mentioned electrical devices can be vehicles, ships, spacecraft, electric toys, electric tools, energy storage equipment, amusement equipment, elevators and lifting equipment, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include aircraft, rockets, space shuttles and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys or electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.; energy storage equipment can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be carousels, jumping machines, etc.

[0033] This application does not impose any special restrictions on the above-mentioned power-consuming device. For new energy vehicles, the above-mentioned battery can be used as a driving power source, thereby replacing fossil fuels to provide driving power.

[0034] See also Figure 1 The battery 10 in the preferred embodiment of the present invention includes a bottom shell 100 , an upper cover 200 and a battery module 300 .

[0035] The bottom shell 100 is usually a hollow structure with an opening on one side, and its outer contour can be rectangular, circular or other shapes that are compatible with the battery compartment of the electrical device. The upper cover 200 is covered on the bottom shell 100, and a receiving cavity for accommodating the battery module 300 is formed between the upper cover 200 and the bottom shell 100. The upper cover 200 can also be a hollow structure with an opening on one side, and the upper cover 200 and the open side of the bottom shell 100 are arranged opposite to each other, so as to form a closed cavity structure between the two. Specifically, the upper cover 200 and the bottom shell 100 can be matched by bolt connection, clamping, riveting and welding.

[0036] Since the size of the battery 10 used for new energy is relatively large, the size of the bottom shell 100 and the upper cover 200 is also relatively large. In order to improve the overall structural strength of the battery 10, the bottom wall of the bottom shell 100 is provided with a crossbeam 110 and a longitudinal beam 120 to strengthen the structural strength of the bottom shell 100. Specifically, the crossbeam 110 and the longitudinal beam 120 are arranged substantially perpendicular to each other, and can be fixed to the bottom wall of the bottom shell 100 by welding, or can be integrally formed with the bottom wall of the bottom shell 100.

[0037] The battery module 300 is a core component of the battery 10, and is used to store and release electrical energy. One or more battery modules 300 may be provided, and in order to obtain a larger battery capacity, a plurality of battery modules 300 are generally provided in the battery 10. For example, in this embodiment, two battery modules 300 are provided, and the two battery modules 300 are accommodated in the accommodation cavity and arranged side by side along the extension direction of the crossbeam 110.

[0038] See also Figure 2 and Figure 3 The battery module 300 in the preferred embodiment of the present invention includes a single-row battery cell 310 and a cooling plate 320 .

[0039] The single-row battery cell 310 includes a plurality of battery cells 311 arranged in parallel, and the battery cell 311 may be a lithium-ion battery, and its shape may be a cylinder or a cuboid. The battery cell 311 in this embodiment is a cuboid lithium-ion battery, and the large surfaces of the plurality of battery cells 311 are arranged in sequence. Furthermore, each single-row battery cell 310 also includes end plates 312 located at both ends in the length direction and a middle support plate 313 distributed between the plurality of battery cells 311. The plurality of battery cells 311 are distributed between the end plates 312 at both ends, and the middle support plate 313 cooperates with the end plates 312 at both ends to clamp the plurality of battery cells 311. The number of the middle support plates 313 may be only one, or more than two may be provided. The middle support plate 313 can provide support for each single-row battery cell 310 from the middle position, thereby being able to improve the stability of the battery module 300 to a certain extent.

[0040] There are multiple cooling plates 320, and the multiple cooling plates 320 are arranged at intervals and form a containing space (not shown) between two adjacent cooling plates 320. More specifically, the multiple cooling plates 320 form at least two containing spaces, that is, there are at least three cooling plates 320. Each battery module 300 generally includes a plurality of single-row battery cells 310, and the number of single-row battery cells 310 is consistent with the number of containing spaces. For example, in the present embodiment, three cooling plates 320 are provided and two containing spaces are formed, and two single-row battery cells 310 are also provided.

[0041] Obviously, for a cell module 300 in which the number of cells 310 in a single row is greater than two, the number of cooling plates 320 included therein is greater than three. More specifically, in this embodiment, the spacing between two adjacent cooling plates 320 is 148 mm to 300 mm.

[0042] The cooling plate 320 is provided with a cooling channel inside, through which the coolant can flow. The cooling plate 320 is in the shape of an elongated strip, which is consistent with the extension direction of the single-row battery cell 310. Each accommodation space accommodates a single-row battery cell 310 that is thermally coordinated with the cooling plates 320 on both sides. Thermal coordination means that heat exchange can be performed between the single-row battery cell 310 and the cooling plate 320. The single-row battery cell 310 and the cooling plate 320 can be directly in contact to achieve thermal coordination, or can be thermally coordinated with the cooling plate 320 through thermal conductive components such as thermal conductive glue.

[0043] In order to improve the heat exchange efficiency between the single-row battery cells 310 and the cooling plate 320 , specifically in the present embodiment, a thermal conductive adhesive (not shown) is filled between each single-row battery cell 310 and the cooling plate 320 .

[0044] It can be seen that cooling plates 320 are distributed on both sides of each single-row battery cell 310, thereby ensuring that each battery cell 311 can achieve thermal coordination with the cooling plate 320. Even the battery cell 311 located in the middle of the battery module 300 can exchange heat with the cooling plate 320 to quickly conduct the generated heat to the cooling plate 320. By providing the cooling plate 320 in the battery module 300, the heat dissipation performance of the battery module 300 can be improved, and by cooperating with the thermal management system of the battery 10, the heat dissipation performance of the battery 10 can be significantly improved.

[0045] Specifically, in this embodiment, each cooling plate 320 includes a water inlet pipe and a water outlet pipe connected to the cooling channel, and the water inlet pipe and the water outlet pipe are located at the same end of the longitudinal direction of the cooling plate 320. The water inlet pipe allows the coolant to enter the cooling channel, and the coolant that has absorbed the heat flows out of the cooling channel through the water outlet pipe. In this cycle, the heat can be taken away from the battery module 300. Moreover, the water inlet pipe and the water outlet pipe are arranged at the same end of the cooling plate 320, which is conducive to saving space.

[0046] Since the battery module 300 includes a plurality of single-row cells 310 and is supported by the middle support plate 313, the length of the single-row cells 310 can be set longer, that is, the number of parallel cell monomers 311 in each single-row cell 310 can be greater. Normally, the length of the battery module 300 can exceed 590 mm. Therefore, the number of cell monomers 311 in each battery module 300 is relatively large, so the number of battery modules 300 required when the battery 10 is grouped is relatively small, thereby improving the grouping efficiency. Moreover, two adjacent single-row cells 310 in the battery module 300 can share a cooling plate 320 for cooling, so the number of cooling plates 320 can be reduced compared to a module including only one single-row cell 310, thereby also improving the space utilization rate in the battery 10.

[0047] In addition, since the battery module 300 includes a plurality of single-row cells 310, which are relatively large in size, the structural strength will decrease to a certain extent compared to the modules with smaller sizes. In order to avoid this problem, the end plate 312 and the middle support plate 313 of each single-row cell 310 are fixedly connected to the cooling plates 320 on both sides of the single-row cell 310. In this way, the cooling plate 320 will form an integral support structure with the end plate 312 and the middle support plate 313, so that a stable and reliable support is formed between the cooling plate 320 and the single-row cell 310. While achieving cooling, the cooling plate 320 can also play a good limiting role for each single-row cell 310. Moreover, the middle support plate 313 provides support for the single-row cell 310 from the middle position, thereby improving the strength of the single-row cell 310. Therefore, the overall structural strength of the battery module 300 can be improved, solving the problem of poor structural strength of large-sized modules in the whole package.

[0048] In order to improve the supporting effect of the middle support plate 313 , specifically in the present embodiment, at least two middle support plates 313 are distributed between the plurality of battery cells 311 , and the distance between two adjacent middle support plates 313 is 400 mm to 800 mm.

[0049] Please also read Figure 4 Specifically in this embodiment, a rivet hole 302 is opened at a position corresponding to each cooling plate 320 and the end plate 312 and the middle support plate 313, and the cooling plate 320 is riveted and fixed to the end plate 312 and the middle support plate 313 by inserting a rivet 330 into the rivet hole 302.

[0050] By applying high pressure, the rivet 330 is plastically deformed and generates a certain friction resistance, thereby forming a strong connection. The pressure riveting connection method can improve the tensile strength and fatigue strength of the material, thereby ensuring the reliability and safety of the connection. Specifically, the cooling plate 320 and each end plate 312 can be fixed by multiple rivets 330, and correspondingly, multiple rivet holes 302 can be set at the corresponding positions of the cooling plate 320 and the end plate 312, and the multiple rivet holes 302 can be arranged at intervals along the height direction of the cooling plate 320.

[0051] Please also read Figure 5 and Figure 6 In this embodiment, the cooling plate 320 includes a cooling cover plate 321 , a flow channel plate 322 and a reinforcing plate 323 .

[0052] The shapes of the cooling cover plate 321 and the flow channel plate 322 are roughly the same, and both are metal plates. Specifically in the present embodiment, the cooling cover plate 321 and the flow channel plate 322 are both aluminum plates. The texture of the aluminum plate is relatively soft, so it is convenient to form a cooling channel by stamping. A stamping groove 3221 is stamped on one side of the flow channel plate 322, and a convex rib 3222 is formed at a position corresponding to the stamping groove 3221 on the other side. The stamping groove 3221 and the convex rib 3222 are formed simultaneously by stamping, and the stamping groove 3221 is formed on the concave side of the flow channel plate 322, and the convex rib 3222 is formed on the convex side. The stamping groove 3221 can be in an S-shape, a U-shape, or the like.

[0053] The cooling cover plate 321 is covered on one side of the flow channel plate 322 where the stamping groove 3221 is formed, and cooperates with the stamping groove 3221 to form a cooling flow channel (not marked in the figure). The cooling cover plate 321 can cover the stamping groove 3221, thereby closing the stamping groove 3221 to form a cooling flow channel. The coolant can flow in the cooling flow channel, thereby achieving cooling. Specifically in this embodiment, the cooling cover plate 321 is welded to the flow channel plate 322 by brazing. In this way, the cooling cover plate 321 is more firmly connected to the flow channel plate 322, and no additional operations such as punching are required.

[0054] The reinforcing plate 323 is attached to the side of the flow channel plate 322 where the convex rib 3222 is formed and forms a clearance for the convex rib 3222. The reinforcing plate 323 can be connected to the flow channel plate 322 by bonding, welding, etc. Specifically, in this embodiment, the reinforcing plate 323 is bonded to the surface of the flow channel plate 322. The bonding method does not significantly increase the thickness of the cooling plate 320, which is conducive to improving the space utilization. Moreover, the bonding method is simpler than the welding process.

[0055] The reinforcing plate 323 can play a supporting and limiting role. When the cooling plate 320 is squeezed, the reinforcing plate 323 can prevent the rib 3222 from being over-extruded and sinking inwards and causing damage to the cooling channel. Specifically in this embodiment, the thickness of the reinforcing plate 323 is not less than the height of the rib 3222. In other words, the surface of the reinforcing plate 323 can be flush with the top of the rib 3222 or slightly higher than the top of the rib 3222. In this way, the reinforcing plate 323 can effectively suspend the rib 3222, and the protection effect of the rib 3222 is better.

[0056] It should be noted that the rivet holes 302 on the cooling plate 320 need to avoid the cooling channel to prevent leakage in the cooling channel. Specifically in this embodiment, the rivet holes 302 are distributed in the area where the reinforcing plate 323 is located. In this way, while the rivet holes 302 avoid the cooling channel, the reinforcing plate 323 can also play a structural reinforcement role in the opening area where the rivet holes 302 are located, thereby avoiding the structural strength of the cooling plate 320 from decreasing due to the opening.

[0057] Furthermore, in this embodiment, the stamping area where the stamping groove 3221 and the convex rib 3222 are located is located in the middle of the flow channel plate 322, and the reinforcing plate 323 is annular and extends along the circumference of the stamping area. It can be seen that a hollow portion (not marked in the figure) is formed in the middle of the reinforcing plate 323, and the convex rib 3222 is located in the hollow portion. Since the annular reinforcing plate 323 can provide uniform support, and the convex rib 3222 is located within the range of the reinforcing plate 323. Therefore, the protective effect of the reinforcing plate 323 on the convex rib 3222 is further improved.

[0058] The battery 10 and the battery module 300, the end plate 312 and the middle support plate 313 are fixedly connected to the cooling plates 320 on both sides of the single-row battery cell 310, so that a stable and reliable support is formed between the cooling plates 320 and the single-row battery cell 310. Moreover, the middle support plate 313 provides support to the single-row battery cell 310 from the middle position, thereby improving the strength of the single-row battery cell 310. Therefore, the structural strength of the battery module 300 is relatively high, which can improve the structural strength of the battery 10. Since each single-row battery cell 310 is accommodated in the accommodation space formed by two adjacent cooling plates 320, cooling plates 320 are distributed on both sides of each single-row battery cell 310, thereby ensuring that each battery cell 311 can achieve thermal coordination with the cooling plate 320. Even the battery cell 311 located in the middle position of the battery module 300 can exchange heat with the cooling plate 320, thereby quickly conducting the generated heat to the cooling plate 320, so the heat dissipation performance of the battery 10 is also better.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A battery module, characterized in that: include: A single-row battery cell comprises a plurality of battery cells arranged in parallel, an end plate for clamping the plurality of battery cells, and a middle support plate distributed between the plurality of battery cells; and A cooling plate, wherein a plurality of the cooling plates are arranged at intervals and a receiving space is formed between two adjacent cooling plates, and the plurality of cooling plates form at least two receiving spaces; Among them, each of the accommodating spaces accommodates a single-row battery cell, each of the single-row battery cells is thermally coordinated with the cooling plates on both sides, and the end plate and the middle support plate of each single-row battery cell are fixedly connected to the cooling plates on both sides of the single-row battery cell.

2. The battery module according to claim 1, characterized in that: A rivet hole is provided at a position corresponding to each of the cooling plates and the end plate and the middle support plate, and the cooling plate is riveted and fixed to the end plate and the middle support plate by means of rivets inserted into the rivet holes.

3. The battery module according to claim 1, characterized in that: At least two of the middle support plates are distributed between the plurality of battery cells, and the distance between two adjacent middle support plates is 400 mm to 800 mm.

4. The battery module according to claim 1, characterized in that: The distance between two adjacent cooling plates is 148 mm to 300 mm.

5. The battery module according to claim 1, characterized in that: Each of the cooling plates comprises a water inlet pipe and a water outlet pipe which are connected with the cooling channel, and the water inlet pipe and the water outlet pipe are located at the same end in the longitudinal direction of the cooling plate.

6. The battery module according to any one of claims 1 to 5, characterized in that: The cooling plate includes a cooling cover plate, a flow channel plate and a reinforcing plate. A stamping groove is stamped on one side of the flow channel plate, and a convex rib is formed at a position corresponding to the stamping groove on the other side. The cooling cover plate is covered on the side of the flow channel plate where the stamping groove is formed, and cooperates with the stamping groove to form a cooling flow channel. The reinforcing plate is attached to the side of the flow channel plate where the convex rib is formed and forms a avoidance position for the convex rib.

7. The battery module according to claim 6, characterized in that: The stamping area where the stamping groove and the convex rib are located is located in the middle of the flow channel plate, and the reinforcing plate is annular and extends along the circumference of the stamping area.

8. The battery module according to claim 6, characterized in that: The thickness of the reinforcing plate is not less than the height of the rib.

9. The battery module according to claim 6, characterized in that: Each cooling plate is provided with rivet holes at positions corresponding to the end plates and the middle support plate, and the rivet holes are distributed in the area where the reinforcing plate is located.

10. A battery, characterized in that: It comprises a bottom shell, an upper cover and a battery module as claimed in any one of claims 1 to 9, wherein the upper cover cooperates with the bottom shell to form a receiving cavity, and the battery module is received in the receiving cavity.

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