Battery and electric device

Abstract

The utility model relates to a battery and a power utilization device, the battery comprises a battery monomer (100) and a box body assembly (200), the box body assembly (200) comprises: a bottom plate (1), in which a first chamber (10) for a cooling medium to flow is arranged; the battery pack comprises a bottom plate (1) and a containing groove (2), the containing groove (2) is formed in the bottom plate (1), the containing groove (2) and the bottom plate (1) are integrally formed, a containing cavity defined by the containing groove (2) is configured to contain the battery monomers (100), a second cavity (20) surrounding the containing cavity in the circumferential direction is formed in the side wall of the containing groove (2), and a cooling medium is arranged in the second cavity (20) which is communicated with the first cavity (10). The reliability of the battery can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] Batteries are widely used in energy storage devices and power equipment for new energy electric vehicles, and are of great significance in solving human environmental pollution and energy crises.

[0003] The current heat dissipation structure of the battery requires water-cooling plates to be installed between adjacent battery cells. Coolant flows through the inside of the water-cooling plates, and these water-cooling plates must be connected at both ends. Not only is the assembly cumbersome, but there is also a high risk of coolant leakage. Utility Model Content

[0004] An object of the present disclosure is to improve the reliability of batteries.

[0005] According to a first aspect of the present disclosure, a battery is proposed, including a battery cell and a box assembly, the battery cell is arranged in the box assembly, the box assembly includes: a bottom plate, in which a first chamber for cooling medium to flow is provided; and a receiving groove, which is arranged on the bottom plate and formed integrally with the bottom plate, the receiving cavity formed by the receiving groove is configured to receive the battery cell, and a second cavity surrounding the receiving cavity in a circumferential direction is provided in the side wall of the receiving groove, and a cooling medium is provided in the second cavity and is connected to the first cavity.

[0006] The battery of this embodiment has a base plate and a receiving tank formed in one piece, which can realize the integration of the liquid cooling structure and the box body. The wall of the receiving tank also serves as a liquid cooling plate, which can not only simplify the assembly process and reduce the manufacturing cost, but also reduce the risk of leakage of the cooling medium, thereby improving the reliability of the battery; the box body assembly can realize the functions of cooling, anti-collision and protection of the battery cell; the alternating flow of the cooling medium in the first chamber and the second chamber has high cooling efficiency for the battery cell, can maintain the operating temperature of the battery cell within a safe range, improve the operating stability and life of the battery cell, thereby improving the reliability and stability of the battery, and is more suitable for application scenarios with high requirements for thermal management, such as electric vehicles and energy storage systems.

[0007] In some embodiments, both the battery cells and the receiving slots are provided in plurality, and the plurality of battery cells and the plurality of receiving slots are provided in one-to-one correspondence.

[0008] The multiple battery cells and multiple receiving slots of this embodiment are arranged in a one-to-one correspondence, which can ensure that each battery cell can obtain better protection and cooling effects, and help prevent the spread of local overheating or local faults.

[0009] In some embodiments, the outer contour of the battery cell is adapted to the shape of the receiving cavity.

[0010] This embodiment can reduce unnecessary gaps between the battery cell and the side walls and bottom walls of the receiving groove by adapting the outer contour of the battery cell to the shape of the receiving groove, which not only helps to improve the structural stability but also improves the heat exchange effect.

[0011] In some embodiments, the receiving groove and the bottom plate are integrally formed by injection molding.

[0012] The receiving groove and the bottom plate of this embodiment are integrally formed by injection molding, which can maintain good sealing, better prevent leakage of the cooling medium, and improve the reliability of the battery.

[0013] In some embodiments, there are multiple battery cells and multiple accommodating grooves, which are arranged in a rectangular array. Adjacent accommodating grooves along a first direction share a second side wall extending along a second direction, and adjacent accommodating grooves along the second direction share a first side wall extending along the first direction, and the second direction is perpendicular to the first direction.

[0014] The first side wall and the second side wall of this embodiment form a grid structure, which can improve the structural strength of the box assembly and increase the arrangement density of the battery cells.

[0015] In some embodiments, the projection of the first chamber in a plane perpendicular to the third direction is a first projection area, the projections of the plurality of receiving grooves in the plane all fall within the first projection area, and the third direction is perpendicular to the first direction and the second direction.

[0016] This embodiment ensures that the bottom surface of the battery cell is cooled by the cooling medium in the first chamber by making the projections of the multiple receiving grooves in the plane all fall within the first projection area, thereby improving the cooling effect of the battery cell.

[0017] In some embodiments, the positive terminal and the negative terminal of the battery cell are both higher than the opening of the top surface of the receiving groove.

[0018] This embodiment can simplify the electrical connection between the battery cell and the external circuit by arranging the positive and negative terminals at a position higher than the opening of the top surface of the receiving groove, thereby simplifying the battery assembly process and reducing the risk of connection errors.

[0019] In some embodiments, the box assembly further includes: a cooling mechanism, which is disposed on a side of the bottom plate away from the receiving groove, and the cooling mechanism is configured to cool the cooling medium in the first chamber.

[0020] The cooling mechanism of this embodiment is arranged on the side of the bottom plate away from the receiving groove, which can optimize the space utilization of the battery; the cooling mechanism can cool the cooling medium in the first chamber to ensure that the cooling medium can be quickly cooled down, thereby improving the heat exchange efficiency; the cooling medium after cooling in the first chamber will also exchange heat with the cooling medium in the second chamber, further improving the cooling effect of the box assembly on the battery cell, thereby improving the stability of the battery performance.

[0021] In some embodiments, the cooling mechanism includes an air cooling component.

[0022] This embodiment generates airflow through the air cooling component to exchange heat with the cooling medium in the first chamber, which can ensure that the cooling medium is cooled quickly, thereby improving the heat exchange efficiency; it can improve the cooling effect of the box assembly on the battery cell while reducing the cooling cost, thereby improving the stability of the battery performance.

[0023] In some embodiments, the cooling mechanism includes a mounting plate and multiple air-cooling components. The mounting plate is provided with an inner cavity and an air outlet is provided on a side close to the base plate. Multiple air-cooling components are arranged in the inner cavity at intervals, and the air-cooling components include air-cooling blades.

[0024] The cooling mechanism of this embodiment is arranged in the form of a combination of a mounting plate and a plurality of built-in air-cooling components, which can improve the cooling efficiency of the cooling mechanism; the air outlet is located on the side of the mounting plate close to the base plate, which can ensure that the cooling air is blown directly to the base plate, thereby reducing the temperature of the cooling medium in the first chamber and achieving efficient heat exchange; the plurality of air-cooling components are arranged at intervals, which can prevent local overheating.

[0025] In some embodiments, a plurality of air-cooling components are arranged in a rectangular array in the inner cavity.

[0026] The multiple air-cooling components of this embodiment are arranged in the inner cavity in a rectangular array, which can further improve the cooling efficiency of the cooling mechanism, indirectly improve the cooling effect of the box assembly on the battery cells, and further improve the stability of the battery performance.

[0027] In some embodiments, the bottom plate protrudes from the outermost receiving groove, and the cooling mechanism is connected to at least the protruding portion of the bottom plate.

[0028] The bottom plate of this embodiment protrudes from the outermost receiving groove, which can provide a stable installation platform for the installation of the cooling mechanism, thereby optimizing the spatial layout of the battery.

[0029] According to a second aspect of the present disclosure, an electrical device is provided, comprising the battery of the above embodiment.

[0030] The electrical device of this embodiment has a simple battery assembly process, low manufacturing cost, low risk of cooling medium leakage, high battery reliability and stability, and the battery temperature is stabilized at a low level, which can meet the thermal management requirements of the electrical device, while reducing the production cost of the electrical device and improving the stability and safety of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0032] Figure 1 Schematic diagram of the structure of some embodiments of the battery disclosed herein.

[0033] Figure 2 1 is a front view of some embodiments of the battery disclosed herein.

[0034] Figure 3 for Figure 2 Schematic diagram of the AA section.

[0035] Figure 4 for Figure 2 Schematic diagram of BB cross section.

[0036] Figure 5 FIG. 1 is a side view of some embodiments of the battery disclosed herein from a first perspective.

[0037] Figure 6 FIG. 4 is a side view of some embodiments of the battery disclosed herein from a second perspective.

[0038] Figure 7 It is a schematic structural diagram of some embodiments of the box assembly of the battery disclosed in the present invention.

[0039] Figure 8 Schematic diagrams of the structures of other embodiments of the box assembly of the battery disclosed in the present invention. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0041] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0043] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0045] Based on the above-mentioned embodiments of the present disclosure, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0046] First, if Figures 1 to 8 As shown, the present disclosure proposes a battery, including a battery cell 100 and a box assembly 200, the box assembly 200 includes: a base plate 1, in which a first chamber 10 for cooling medium to flow is provided; and a receiving groove 2, which is provided on the base plate 1 and formed integrally with the base plate 1, the receiving cavity formed by the receiving groove 2 is configured to receive the battery cell 100, and a second chamber 20 circumferentially surrounding the receiving cavity is provided in the side wall of the receiving groove 2, and a cooling medium is provided in the second chamber 20 and is connected to the first chamber 10.

[0047] Specifically, the receiving tank 2 is used to accommodate the battery cell 100, the first chamber 10 is located in the bottom area of ​​the battery cell 100, and the second chamber 20 surrounds the battery cell 100, which can achieve sufficient heat dissipation of the battery cell 100 through the cooling medium. The heat emitted by the battery cell 100 is transferred to the bottom plate 1 or the wall of the receiving tank 2, and then the heat is absorbed by the built-in cooling medium, which can improve the heat exchange efficiency. The battery cell 100 is also called a battery cell.

[0048] Specifically, the first chamber 10 is connected to the second chamber 20 , that is, the box assembly 200 forms a through cavity on the side and bottom of the battery cell 100 , which provides a larger flow space for the cooling medium and makes the temperature of the cooling medium more uniform.

[0049] Specifically, the receiving tank 2 and the base plate 1 are formed integrally, which can reduce the risk of liquid leakage caused by the connection of the liquid cooling plate, and can reduce the assembly process of the liquid cooling plate, solving the problem of complex assembly of the liquid cooling plate.

[0050] Optionally, one or more battery cells 100 may be provided in one receiving groove 2. Optionally, the receiving groove 2 may be in any shape that matches the outer wall of the battery cell 100, such as a rectangular parallelepiped or a columnar shape.

[0051] In the battery of this embodiment, the base plate 1 and the receiving tank 2 are formed in one piece, which can realize the integration of the liquid cooling structure and the box body. The wall of the receiving tank 2 also serves as a liquid cooling plate, which can not only simplify the assembly process and reduce the manufacturing cost, but also reduce the risk of leakage of the cooling medium, thereby improving the reliability of the battery; the box assembly 200 can realize the functions of cooling, anti-collision and protection of the battery cell 100; the alternating flow of the cooling medium in the first chamber 10 and the second chamber 20 has high cooling efficiency for the battery cell 100, can maintain the operating temperature of the battery cell 100 within a safe range, improve the operating stability and life of the battery cell 100, thereby improving the reliability and stability of the battery, and is more suitable for application scenarios with high requirements for thermal management, such as electric vehicles and energy storage systems.

[0052] In the disclosed embodiments, the battery cell 100 may be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., but the embodiments of the present application are not limited thereto.

[0053] In some embodiments, the battery cell 100 further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The present disclosure has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0054] In some embodiments, Figures 1 to 8As shown, both the battery cells 100 and the receiving slots 2 are provided in plurality, and the plurality of battery cells 100 and the plurality of receiving slots 2 are provided in one-to-one correspondence.

[0055] Specifically, the independent receiving slot 2 can provide physical isolation for each battery cell 100. Even if a battery cell 100 fails or has thermal runaway, the impact on other battery cells 100 can be reduced, thereby reducing the risk of serious accidents of the entire battery.

[0056] The multiple battery cells 100 and the multiple receiving slots 2 of this embodiment are arranged in a one-to-one correspondence, which can ensure that each battery cell 100 can obtain better protection and cooling effects, and help prevent the spread of local overheating or local failures.

[0057] In some embodiments, Figures 1 to 8 As shown, the outer contour of the battery cell 100 is adapted to the shape of the receiving cavity.

[0058] This embodiment can reduce unnecessary gaps between the battery cell 100 and the side walls and bottom walls of the receiving groove by adapting the outer contour of the battery cell 100 to the shape of the receiving groove, which not only helps to improve the structural stability, but also improves the heat exchange effect.

[0059] In some embodiments, the receiving groove 2 and the bottom plate 1 are integrally formed by injection molding.

[0060] The receiving groove 2 and the bottom plate 1 of this embodiment are integrally formed by injection molding, which can maintain good sealing, better prevent leakage of the cooling medium, and improve the reliability of the battery.

[0061] In some embodiments, Figures 1 to 4 As shown, there are multiple battery cells 100 and multiple receiving grooves 2, which are arranged in a rectangular array. The receiving grooves 2 adjacent to each other along the first direction x share a second side wall 22 extending along the second direction y, and the receiving grooves 2 adjacent to each other along the second direction y share a first side wall 21 extending along the first direction x, and the second direction y is perpendicular to the first direction x.

[0062] The first side wall 21 and the second side wall 22 of this embodiment form a grid structure, which can improve the structural strength of the box assembly 200 and increase the arrangement density of the battery cells 100 .

[0063] In some embodiments, the projection of the first chamber 10 in a plane perpendicular to the third direction z is a first projection area, and the projections of multiple receiving grooves 2 in the plane all fall within the first projection area. The third direction z is perpendicular to the first direction x and the second direction y.

[0064] Specifically, the plane perpendicular to the third direction z may be a horizontal plane.

[0065] This embodiment ensures that the bottom surface of the battery cell 100 is cooled by the cooling medium in the first chamber 10 by making the projections of the multiple receiving grooves 2 in the plane all fall within the first projection area, thereby improving the cooling effect of the battery cell 100 .

[0066] In some embodiments, Figures 1 to 8 As shown, the positive terminal and the negative terminal of the battery cell 100 are both higher than the opening of the top surface of the receiving groove 2 .

[0067] Specifically, the positive terminals and negative terminals of the plurality of battery cells 100 have a uniform height standard, which is beneficial to standardized production.

[0068] This embodiment can simplify the electrical connection between the battery cell 100 and the external circuit by arranging the positive and negative terminals at a position higher than the top opening of the receiving groove 2, thereby simplifying the battery assembly process and reducing the risk of connection errors.

[0069] In some embodiments, Figure 8 As shown, the box assembly 200 further includes: a cooling mechanism 3 , which is disposed on a side of the bottom plate 1 away from the receiving groove 2 , and the cooling mechanism 3 is configured to cool the cooling medium in the first chamber 10 .

[0070] Specifically, the cooling mechanism 3 is integrated into the box structure of the box assembly 200 .

[0071] Optionally, the cooling mechanism 3 may include any cooling component such as an air cooling component, a liquid cooling component or an air conditioning cooling component.

[0072] The cooling mechanism 3 of this embodiment is arranged on the side of the bottom plate 1 away from the receiving groove 2, which can optimize the space utilization of the battery; the cooling mechanism 3 can cool the cooling medium in the first chamber 10 to ensure that the cooling medium can be quickly cooled down, thereby improving the heat exchange efficiency; the cooling medium in the first chamber 10 after cooling down will also exchange heat with the cooling medium in the second chamber 20, further improving the cooling effect of the box assembly 200 on the battery cell 100, thereby improving the stability of the battery performance.

[0073] In some embodiments, the cooling mechanism 3 includes an air cooling component.

[0074] Specifically, the air cooling component is integrated into the box structure of the box assembly 200, which can not affect the portability of the battery.

[0075] Optionally, the air cooling component may be a fan or an air cooling blade, etc. Optionally, one or more air cooling components may be provided, for example, multiple air cooling components may be provided, and the multiple air cooling components may be arranged in a rectangular array.

[0076] This embodiment generates airflow through the air cooling component to exchange heat with the cooling medium in the first chamber 10, which can ensure that the cooling medium is quickly cooled, thereby improving the heat exchange efficiency; it can improve the cooling effect of the box assembly 200 on the battery cell 100 while reducing the cooling cost, thereby improving the stability of the battery performance.

[0077] In some embodiments, Figure 8 As shown, the cooling mechanism 3 includes a mounting plate 30 and a plurality of air-cooling components 31. The mounting plate 30 is provided with an inner cavity and an air outlet is provided on a side close to the base plate 1. The plurality of air-cooling components 31 are arranged at intervals in the inner cavity, and the air-cooling components 31 include air-cooling blades.

[0078] Optionally, each air-cooling component 31 includes a group of air-cooling blades.

[0079] The cooling mechanism 3 of this embodiment is arranged in a combination of a mounting plate 30 and a plurality of built-in air-cooling components 31, which can improve the cooling efficiency of the cooling mechanism 3; the air outlet is located on the side of the mounting plate 30 close to the base plate 1, which can ensure that the cooling air is blown directly to the base plate 1, thereby reducing the temperature of the cooling medium in the first chamber 10 and achieving efficient heat exchange; the plurality of air-cooling components 31 are arranged at intervals, which can prevent local overheating.

[0080] In some embodiments, a plurality of air-cooling components 31 are arranged in the inner cavity in a rectangular array.

[0081] Optionally, the number of the air-cooling components 31 and the number of the containing slots 2 may be inconsistent or consistent, for example, a plurality of air-cooling components 31 and a plurality of containing slots 2 are arranged in a one-to-one correspondence.

[0082] The multiple air-cooling components 31 of this embodiment are arranged in the inner cavity in a rectangular array, which can further improve the cooling efficiency of the cooling mechanism 3, indirectly improve the cooling effect of the box assembly 200 on the battery cell 100, and further improve the stability of the battery performance.

[0083] In some embodiments, Figure 8 As shown, the bottom plate 1 protrudes from the receiving groove 2 located at the outermost side, and the cooling mechanism 3 is connected to at least the protruding portion of the bottom plate 1 .

[0084] Specifically, a first projection area of ​​the receiving groove 2 in a plane perpendicular to the third direction z is smaller than a second projection area of ​​the bottom plate 1 in a plane perpendicular to the third direction z.

[0085] Optionally, the projection areas of the base plate 1 and the cooling mechanism 3 in a plane perpendicular to the third direction z are the same.

[0086] The bottom plate 1 of this embodiment protrudes from the outermost receiving groove 2, which can provide a stable installation platform for the installation of the cooling mechanism 3, thereby optimizing the spatial layout of the battery.

[0087] In some specific embodiments, Figure 1 and Figure 2 As shown, there are multiple battery cells 100 and multiple receiving slots 2, and the multiple battery cells 100 and the multiple receiving slots 2 are arranged in a one-to-one correspondence. There are multiple battery cells 100 and multiple receiving slots 2, and the multiple receiving slots 2 are arranged in a rectangular array. The adjacent receiving slots 2 along the first direction x share the second side wall 22 extending along the second direction y, and the adjacent receiving slots 2 along the second direction y share the first side wall 21 extending along the first direction x, and the second direction y is perpendicular to the first direction x.

[0088] The grid-structured receiving groove 2 of this embodiment is formed integrally with the bottom plate 1, so that the box assembly 200 takes into account both structural strength and manufacturing cost, and can improve the sealing to reduce the leakage points of the cooling medium and improve the stability of the battery; the side wall of the grid-structured receiving groove 2 serves as a supporting and protective structure, and the cooling medium in its second chamber 20 can surround the battery cell 100, thereby improving the thermal stability of the battery during operation.

[0089] Secondly, the present disclosure also provides an electrical device, comprising the battery of the above embodiment.

[0090] The electrical device of this embodiment has a simple battery assembly process, low manufacturing cost, low risk of cooling medium leakage, high battery reliability and stability, and the battery temperature is stabilized at a low level, which can meet the thermal management requirements of the electrical device, while reducing the production cost of the electrical device and improving the stability and safety of the electrical device.

[0091] The battery of the embodiment of the present disclosure can be applied to various types of electrical devices using batteries. The electrical devices can be mobile phones, portable devices, laptop computers, battery cars, electric cars, ships, spacecraft, electric toys and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and 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. The embodiments of the present disclosure do not impose any special restrictions on the above-mentioned electrical devices. The battery can be used to power electrical devices such as vehicles, for example, to provide power for vehicle control or power for driving.

[0092] The above is a detailed introduction to a battery provided by the present disclosure. Specific embodiments are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and core idea of ​​the present disclosure. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. A battery, characterized in that: It comprises a battery cell (100) and a box assembly (200), wherein the box assembly (200) comprises: A bottom plate (1) having a first chamber (10) therein for the flow of a cooling medium; and A receiving groove (2) is provided on the bottom plate (1) and is formed integrally with the bottom plate (1); a receiving cavity enclosed by the receiving groove (2) is configured to receive the battery cell (100); a second cavity (20) surrounding the receiving cavity in a circumferential direction is provided in the side wall of the receiving groove (2); a cooling medium is provided in the second cavity (20) and is connected to the first cavity (10).

2. The battery according to claim 1, characterized in that A plurality of the battery cells (100) and a plurality of the containing grooves (2) are provided, and the plurality of battery cells (100) and the plurality of containing grooves (2) are arranged in a one-to-one correspondence.

3. The battery according to claim 1, characterized in that The outer contour of the battery cell (100) is adapted to the shape of the accommodating cavity.

4. The battery according to claim 1, characterized in that The containing groove (2) and the bottom plate (1) are integrally formed by injection molding.

5. The battery according to claim 1, characterized in that The battery cell (100) and the receiving groove (2) are both provided in plurality, and the plurality of receiving grooves (2) are arranged in a rectangular array, the receiving grooves (2) adjacent along a first direction (x) share a second side wall (22) extending along a second direction (y), and the receiving grooves (2) adjacent along the second direction (y) share a first side wall (21) extending along the first direction (x), and the second direction (y) is perpendicular to the first direction (x).

6. The battery according to claim 5, characterized in that The projection of the first chamber (10) in a plane perpendicular to a third direction (z) is a first projection area, and the projections of the plurality of accommodating grooves (2) in the plane all fall within the first projection area, and the third direction (z) is perpendicular to the first direction (x) and the second direction (y).

7. The battery according to claim 1, characterized in that The positive terminal and the negative terminal of the battery cell (100) are both higher than the opening of the top surface of the accommodation groove (2).

8. The battery according to any one of claims 1 to 7, characterized in that: The box assembly (200) further includes: A cooling mechanism (3) is provided on a side of the bottom plate (1) away from the containing groove (2), and the cooling mechanism (3) is configured to cool the cooling medium in the first chamber (10).

9. The battery according to claim 8, characterized in that The cooling mechanism (3) comprises an air cooling component (31).

10. The battery according to claim 9, characterized in that The cooling mechanism (3) comprises a mounting plate (30) and a plurality of air-cooling components (31); an inner cavity is provided in the mounting plate (30) and an air outlet is provided on a side close to the base plate (1); the plurality of air-cooling components (31) are arranged at intervals in the inner cavity; the air-cooling components (31) comprise air-cooling blades.

11. The battery according to claim 10, characterized in that A plurality of air cooling components (31) are arranged in the inner cavity in a rectangular array.

12. The battery according to claim 8, characterized in that The bottom plate (1) protrudes from the accommodating groove (2) located at the outermost side, and the cooling mechanism (3) is connected to at least the protruding portion of the bottom plate (1).

13. An electrical device, characterized in that: A battery comprising any one of claims 1 to 12.

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