Battery and electric device

Abstract

The utility model provides a battery and an electric device. The battery comprises a base, a cover body and a battery cell, the base comprises a body and a protruding part arranged on the body in a protruding mode, and a containing part is formed on the protruding part; the cover body is arranged on the body, a containing cavity is formed in the cover body, the protruding part extends into the containing cavity, and the radial size of the cover body is decreased in the direction away from the base; and at least part of the battery cell is arranged in the accommodating part. The base and the cover body are assembled together to form the shell of the battery, the battery cell is supported on the base, and the cover body is inversely buckled on the base, so that the battery cell is shielded and protected; the radial size of the cover body is set to be smaller in the direction far away from the base, and one end, far away from the base, of the battery can be controlled, so that the risk that the top of the battery interferes with other structures on the power utilization device can be reduced when the battery is loaded on the power utilization device.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0002] In batteries (such as battery packs) provided by related technologies, the battery cells are housed in a cylindrical casing, and a cover is placed on the casing to seal the battery cells inside, thereby protecting them. However, in order to facilitate the installation of the battery cells and reduce the manufacturing difficulty of the casing, the casing is usually designed with an flared structure. Correspondingly, the size of the matching cover also needs to be increased, resulting in an excessively large top size of the battery. When the battery is installed on an electrical device, it is easy to interfere with other structures on the device. Utility Model Content

[0003] Embodiments of this application provide a battery and an electrical device that can improve the technical problem of an excessively large top size of the battery.

[0004] In a first aspect, embodiments of this application provide a battery, comprising:

[0005] A base, the base including a body and a protrusion protruding from the body, the protrusion having a receiving portion formed thereon;

[0006] A cover is disposed on the body, and a cavity is formed on the cover. The protrusion extends into the cavity, and the radial dimension of the cover decreases in the direction away from the base.

[0007] A battery cell, at least a portion of which is disposed within the receiving portion.

[0008] In one embodiment, the protrusion has a top surface facing away from the body and two oppositely disposed end surfaces, the end surfaces extending from the body to the top surface; the receiving portion is open on at least one of the end surfaces to form a first opening, the first opening being at least partially exposed outside the body, and the battery cell has a terminal post corresponding to the first opening.

[0009] In one embodiment, the battery further includes a battery management system module electrically connected to the terminal post and fixed to the base.

[0010] In one embodiment, the battery cell further includes a first explosion-proof valve, which corresponds to the first opening.

[0011] In one embodiment, the receiving portion is a first receiving groove, which is openly disposed on the top surface of the protrusion to form a second opening.

[0012] In one embodiment, the first receiving groove extends into the body, the portion of the body near the first opening is formed as a first stop, and the first stop engages with the battery cell stop.

[0013] In one embodiment, a portion of the battery cell is housed in the first receiving slot; the battery also includes a bracket disposed above the protrusion and covering the second opening, the bracket having a second receiving slot corresponding to the first receiving slot, and another portion of the battery cell being housed in the second receiving slot.

[0014] In one embodiment, the bracket is disposed on the top surface.

[0015] In one embodiment, a first connecting structure is provided on the base, and a second connecting structure is provided on the bracket, wherein the first connecting structure is connected to the second connecting structure.

[0016] In one embodiment, the first connecting structure is disposed on the protrusion.

[0017] In one embodiment, the first connecting structure is snapped into the second connecting structure.

[0018] In one embodiment, the protrusion further has a side surface connected to the end face and extending from the body to the top surface. The first connecting structure includes a first protrusion protruding on the side surface, and the second connecting structure includes a spring sheet disposed on the bracket and a second protrusion disposed on the spring sheet. The spring sheet is configured to extend to correspond to the side surface and such that the second protrusion engages with the first protrusion.

[0019] In one embodiment, the first protrusion has a first stop surface and a first guide slope, the first stop surface being connected to the side surface and being away from the top surface, and the first guide slope extending obliquely towards the base in a direction away from the side surface; the second protrusion has a second stop surface and a second guide slope, the second stop surface being used to stop and engage with the first stop surface, and the second guide slope being used to guide and engage with the first guide slope.

[0020] In one embodiment, the battery further includes a battery management system module electrically connected to the terminal post and fixed to the side of the bracket opposite to the battery cell.

[0021] In one embodiment, the battery further includes a first busbar disposed on the bracket, and the terminal post is electrically connected to the battery management system module through the first busbar.

[0022] In one embodiment, the battery further includes a first adhesive layer disposed on the inner surface of the first receiving groove, and the first adhesive layer bonds the battery cell to the protrusion.

[0023] In one embodiment, the battery further includes a second adhesive layer disposed on the inner surface of the second receiving groove, and the second adhesive layer bonds the cell to the bracket.

[0024] In one embodiment, the receiving portion is a receiving hole extending along a first direction, the first direction being the direction from one end face to the other end face.

[0025] In one embodiment, the receiving hole is a through hole or a blind hole.

[0026] In one embodiment, the minimum distance between the edge of the receiving hole and the body is greater than or equal to 0.

[0027] In one embodiment, the battery further includes a battery management system module electrically connected to the terminal post and fixed to the top surface.

[0028] In one embodiment, the battery further includes a first busbar disposed on the top surface, and the terminal post is electrically connected to the battery management system module through the first busbar.

[0029] In one embodiment, the battery further includes a first adhesive layer disposed on the inner surface of the receiving hole, and the first adhesive layer bonds the cell to the protrusion.

[0030] In one embodiment, an annular groove is formed on the body surrounding the protrusion, and a plug-in portion is formed on the cover, the plug-in portion being inserted into the annular groove.

[0031] In one embodiment, the battery further includes a seal disposed within the annular groove and located between the insertion portion and the body.

[0032] In one embodiment, the base further includes a mounting portion disposed on the body and spaced apart from the protrusion.

[0033] In one embodiment, the mounting portion includes a first plate, a second plate, and a third plate. The first plate extends outward from the side of the body. The second plate and the third plate are spaced apart on the side surface of the first plate near the cover. A portion of the second plate and a portion of the third plate extend to the surface of the body. A first slot and a second slot are formed on the cover. The first slot and the second slot are respectively inserted into the second plate and the third plate.

[0034] In one embodiment, the first plate is provided with mounting through holes.

[0035] In one embodiment, the portion of the battery cell located within the receiving portion is adapted to the receiving portion; and / or, the battery cell is fixedly disposed within the receiving portion.

[0036] In one embodiment, the body is flat; and / or, the protrusion is higher than the body.

[0037] In one embodiment, the radial dimension of the cavity decreases in the direction away from the base.

[0038] In one embodiment, the angle between the inner wall of the cavity and the plane of the base is 88° to 89°.

[0039] In one embodiment, the cover is provided with a second explosion-proof valve that communicates with the cavity.

[0040] In one embodiment, the battery cell is cylindrical.

[0041] In one embodiment, the battery is a battery pack.

[0042] In one embodiment, the battery pack is a low-voltage battery pack, and the output voltage of the low-voltage battery pack is less than or equal to 48V.

[0043] In one embodiment, the low-voltage battery pack is a startup battery pack.

[0044] Secondly, embodiments of this application provide an electrical device including the battery described above.

[0045] The beneficial effects of the embodiments of this application are as follows:

[0046] In the battery provided in this application embodiment, the battery casing is formed by assembling a base and a cover together. The cover has a cavity, and the base includes a body and a protrusion. A receiving portion is formed on the protrusion protruding from the body to accommodate the battery cell, thus supporting and limiting the cell. The cover is inverted and placed on the upper body of the base, covering the protrusion and the battery cell within the cavity, thereby shielding and protecting the cell. Furthermore, the cover is configured such that its radial dimension decreases along the direction away from the base, and the size of the end of the battery away from the base, i.e., the top, can also be controlled. This reduces the risk of interference between the top of the battery and other structures on the electrical device when the battery is mounted on it. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a three-dimensional schematic diagram of a battery provided in an embodiment of this application. Figure 1 ;

[0049] Figure 2 This is a schematic diagram of the exploded structure of a battery provided in an embodiment of this application. Figure 1 ;

[0050] Figure 3 This is a three-dimensional schematic diagram of a battery provided in an embodiment of this application. Figure 2 The cover is omitted from the diagram at least.

[0051] Figure 4 This is a schematic diagram of the exploded structure of a battery provided in an embodiment of this application. Figure 2 The cover is omitted from the diagram at least.

[0052] Figure 5 This is a schematic diagram of the exploded structure of a battery provided in an embodiment of this application. Figure 3 The cover is omitted from the diagram at least.

[0053] Figure 6 This is a schematic diagram of the exploded structure of a battery provided in an embodiment of this application. Figure 4 The cover is omitted from the diagram at least.

[0054] Figure 7 This is a three-dimensional schematic diagram of a battery provided in an embodiment of this application. Figure 3 The top of the cover in the picture has been cut off to show the internal structure of the cover;

[0055] Figure 8 yes Figure 7 Enlarged view of section A;

[0056] Figure 9 This is a top view of a battery provided in an embodiment of this application;

[0057] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure along the BB direction;

[0058] Figure 11 yes Figure 10 Enlarged view of section C;

[0059] Figure 12 yes Figure 10 Enlarged view of section D;

[0060] Figure 13 yes Figure 10 Enlarged view of section E in the middle;

[0061] Figure 14 This is an assembly structure diagram of the base and battery management system module in another battery provided by an embodiment of this application;

[0062] Figure 15 This is another assembly structure diagram of the base and bracket in a battery provided by an embodiment of this application;

[0063] Figure 16 yes Figure 15 Enlarged portion H Figure 1 ;

[0064] Figure 17 yes Figure 15 Enlarged portion H Figure 2 The second connection structure is omitted in the diagram;

[0065] Figure 18 yes Figure 15 Enlarged portion H Figure 3 The first connection structure is omitted in the diagram;

[0066] Figure 19 This is a schematic diagram of the structure of the electrical device provided in the embodiments of this application.

[0067] Explanation of reference numerals in the attached figures:

[0068] 100. Battery;

[0069] 110. Base;

[0070] 111. Body; 1111. First stop; 1112. Annular groove;

[0071] 112. Protrusion; 1121. Top surface; 1122. End face; 1123. Side surface;

[0072] 113. Receiving section; 1131. First opening; 1132. Second opening; 113a. First receiving groove; 113b. Receiving hole;

[0073] 114. Mounting section; 1141. First plate; 1142. Second plate; 1143. Third plate; 1144. Mounting through hole;

[0074] 120. Cover; 121. Cavity; 122. Insertion part; 123. First slot; 124. Second slot;

[0075] 130. Battery cell; 131. Terminal post; 132. First explosion-proof valve;

[0076] 140. Support; 141. Second receiving slot;

[0077] 150. First connecting structure; 151. First protrusion; 1511. First stop surface; 1512. First guide slope;

[0078] 160. Second connecting structure; 161. Spring piece; 162. Second protrusion; 1621. Second stop surface; 1622. Second guide slope;

[0079] 171. Battery Management System Module; 172. First Busbar; 173. Second Busbar;

[0080] 181. First adhesive layer; 182. Second adhesive layer;

[0081] 191. Sealing components;

[0082] 192. Second explosion-proof valve;

[0083] 200. Electrical appliances. Detailed Implementation

[0084] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0085] Furthermore, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operation, specifically the directions shown in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0086] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0087] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0088] The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0089] In the description of the embodiments of this application, the words "example" or "for example" are used to indicate exemplification, illustration, or description. Any embodiment or design described as "example" or "for example" in the embodiments of this application is not to be construed as being more preferred or having more advantages than another embodiment or design. The use of the words "example" or "for example" is intended to present relative concepts in a clear manner.

[0090] To facilitate understanding of the present application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: spline curves without arrows indicate solid parts, that is, parts with solid structures; spline curves with arrows indicate virtual parts, that is, parts without solid structures.

[0091] Firstly, please see Figures 1 to 18This application provides a battery 100, which includes a base 110, a cover 120, and a battery cell 130. The base 110 includes a body 111 and a protrusion 112 extending from the body 111, with a receiving portion 113 formed on the protrusion 112. The cover 120 is disposed on the body 111, and a cavity 121 is formed on the cover 120, with the protrusion 112 extending into the cavity 121. The radial dimension of the cover 120 decreases in the direction away from the base 110. At least a portion of the battery cell 130 is disposed within the receiving portion 113.

[0092] Battery 100 refers to a device that converts chemical energy into electrical energy. Battery 100 can take different forms; for example, it can be a battery pack.

[0093] The base 110 in the battery 100 can be used to support the battery cell 130. The material of the base 110 includes, but is not limited to, at least one of metal and plastic.

[0094] Specifically, the base 110 includes a body 111 and a protrusion 112. The protrusion 112 is disposed on the body 111 and protrudes beyond the surface of the body 111. As an example, the body 111 and the protrusion 112 are integrally formed, the protrusion 112 protrudes beyond one side surface of the body 111, and the body 111 extends outward relative to the edge of the protrusion 112. A receiving portion 113 is formed on the protrusion 112 for receiving the battery cell 130. It is understood that when the battery cell 130 is received in the receiving portion 113, the battery cell 130 will at least partially protrude beyond the surface of the body 111.

[0095] The cover 120 in the battery 100 is used to cooperate with the base 110 to protect the battery cell 130 located in the receiving portion 113. Specifically, a cavity 121 is formed on the cover 120, the cover 120 is disposed on the body 111, and a protrusion 112 is confined within the cover 120 and extends into the cavity 121. That is, the cover 120 is upside down disposed on the body 111, so that the battery cell 130 located in the receiving portion 113 on the protrusion 112 is also naturally located in the cavity 121, thereby covering and protecting the battery cell 130.

[0096] Along the direction away from the base 110, the radial dimension of the cover 120 decreases, meaning the area defined by the radial cross-sectional outline of the cover 120 decreases. The radial dimension of the cover 120 can decrease linearly or non-linearly along the direction away from the base 110. As an example, the cover 120 is formed by a bottom wall and four side walls, with at least one of the side walls inclined relative to the bottom wall.

[0097] Cell 130, also known as a battery cell, is the basic unit for converting chemical energy into electrical energy. Optionally, cell 130 is a rechargeable cell, which can realize the interconversion of chemical energy and electrical energy.

[0098] The battery 100 may contain one or more cells 130. The protrusion 112 may contain one or more receiving portions 113. A single receiving portion 113 may be used to receive one or more cells 130. Furthermore, the cell 130 may be entirely housed within the receiving portion 113, or only partially housed within it.

[0099] In the battery 100 provided in this embodiment, the outer casing of the battery 100 is formed by assembling a base 110 and a cover 120 together. The cover 120 has a cavity 121. The base 110 includes a body 111 and a protrusion 112. A receiving portion 113 is formed on the protrusion 112 protruding from the body 111 to accommodate the battery cell 130, thereby supporting and limiting the battery cell 130. The cover 120 is inverted on the upper body 111 of the base 110, covering the protrusion 112 and the battery cell 130 within the cavity 121, thus shielding and protecting the battery cell 130. Furthermore, the cover 120 is configured such that its radial dimension decreases along the direction away from the base 110, and the size of the end of the battery 100 away from the base 110, i.e., the top, can also be controlled. This reduces the risk of interference between the top of the battery 100 and other structures on the electrical device when the battery 100 is mounted on it.

[0100] In some implementations, please refer to Figures 2 to 14 The protrusion 112 has a top surface 1121 facing away from the body 111 and two opposing end surfaces 1122, wherein the end surfaces 1122 extend from the body 111 to the top surface 1121. The receiving portion 113 is open on at least one end surface 1122 to form a first opening 1131, the first opening 1131 being at least partially exposed outside the body 111. The battery cell 130 has a terminal post 131 corresponding to the first opening 1131.

[0101] The protrusion 112 has at least one top surface 1121 and two end surfaces 1122. The top surface 1121 is the side surface of the protrusion 112 that faces away from the body 111. The two end surfaces 1122 are two opposing surfaces on the protrusion 112, and both end surfaces 1122 extend from the body 111 to the top surface 1121. It should be noted that the two end surfaces 1122 are positioned opposite each other on the protrusion 112, but they can be parallel or non-parallel. Optionally, the two end surfaces 1122 are parallel to each other. As an example, the protrusion 112 is a cube, and the two end surfaces 1222 are connected to opposite sides of the top surface 1121.

[0102] The receiving portion 113 is open on at least one end face 1122 to form a first opening 1131. That is, at least one end face 1122 of the protrusion 112 has a first opening 1131 communicating with the interior of the receiving portion 113. For example, the first opening 1131 communicating with the interior of the receiving portion 113 may be on one end face 1122, or it may be on both end faces 1122. The opening 1131 allows the receiving portion 113 to be either a groove or a hole. The first opening 1131 is at least partially exposed outside the body 111, meaning the body 111 does not completely cover the first opening 1131, allowing direct communication between the first opening 1131 and the environment outside the base 110. Optionally, the protrusion 112 is higher than the body 111, so that the first opening 1131 on the end face 1122 of the protrusion 112 will also be higher than the body 111, and the body 111 will not easily block the first opening 1131.

[0103] The battery cell 130 has a terminal 131, which is a structure on the battery cell 130 used to electrically connect the internal charged components of the battery cell 130 to external electrical components (such as the battery management system module 171). Typically, at least a portion of the terminal 131 is exposed on the outer surface of the battery cell 130. The terminal 131 corresponds to a first opening 1131, meaning the battery cell 130 is horizontally mounted on the base 110. This can be achieved by extending the terminal 131 out of the receiving portion 113 through the first opening 1131, thus exposing the terminal 131 outside the base 100; or, although the terminal 131 does not extend out of the receiving portion 113, a portion of the external electrical component can be inserted into the receiving portion 113 and connected to the terminal 131 through the first opening 1131. Regardless of the method, the terminal 131 can be electrically connected to the external electrical component of the battery cell 130 through the first opening 1131.

[0104] The above configuration allows for bottom-up assembly of the battery 100. Specifically, during battery assembly, the battery cell 130 is first inserted into the receiving portion 113 of the base 110, with the terminal post 131 on the cell 130 corresponding to the first opening 1131. The terminal post 131 is then electrically connected to the external electrical components of the cell 130 through the first opening 1131. Finally, the cover 120 is placed upside down on the base 110 to protect the cell 130. During this assembly process, after the cell 130 is inserted into the receiving portion 113, whether during the electrical connection process between the cell 130 and the external electrical components or during the covering process, the cell 130 remains supported on the base 110 and essentially stationary relative to it. This eliminates the need for repeated flipping of the cell 130, reducing the probability of mechanical damage and improving the production yield of the battery 100.

[0105] Furthermore, during the bottom-up assembly process of the aforementioned battery 100, the assembly quality can be progressively inspected, further improving the production yield of the battery 100. In the assembly of other batteries, the difficulty of inspecting the cells after they enter the casing typically increases, and the accuracy of the inspection decreases.

[0106] In some implementations, please refer to Figure 2 , Figure 3 and Figure 14 The battery 100 also includes a battery management system module 171, which is electrically connected to the terminal post 131 and fixed on the base 110.

[0107] The battery management system (BMS) module 171 is electrically connected to the battery cell 130 to manage the battery cell 130, enabling the battery cell 130 to operate safely and efficiently, and extending the lifespan of the battery 100. As an example, the battery management system module 171 includes a BMS board.

[0108] The battery management system (BMS) module 171 is electrically connected to the battery cell 130, specifically by connecting the BMS module 171 to the terminal 131. As an example, the BMS module 171 can be connected to the battery cell 130 via a conductor (e.g., an aluminum busbar), thereby enabling circuit conduction.

[0109] The battery management system module 171 is also fixed to the base 110. The battery management system module 171 can be directly fixed to the base 110, or the battery management system module 171 can be indirectly fixed to the base 110 through other components.

[0110] Since the battery management system module 171 is electrically connected to the battery cell 130, and both are mounted on the base 110, their relative positions remain essentially unchanged after electrical connection during battery assembly. This helps ensure the stability of the connection points between the battery management system module 171 and the battery cell 130, reducing the risk of electrical connection failure. Furthermore, compared to mounting the battery management system module 171 on the cover 120, this arrangement also facilitates battery disassembly, reducing the difficulty of battery maintenance or repair.

[0111] In some implementations, please refer to Figures 3 to 6 The battery cell 130 also has a first explosion-proof valve 132, which corresponds to the first opening 1131. That is to say, the first opening 1131 can also be used to avoid the first explosion-proof valve 132. In this way, when the battery cell 130 experiences thermal runaway, the high-temperature fluid ejected from the battery cell 130 can enter the cavity 121 through the first opening 1131 and further utilize the cover 120 for heat transfer.

[0112] In some implementations, please refer to Figures 2 to 6 The receiving portion 113 is a first receiving groove 113a, which is openly provided on the top surface 1121 of the protrusion 112 to form a second opening 1132.

[0113] In other words, the receiving part 113 is specifically a first receiving groove 113a. The first receiving groove 113a has a first opening 1131 and a second opening 1132. In this way, the battery cell 130 can be placed into the first receiving groove 113a through the first opening 1131 or through the second opening 1132, thereby making the assembly method of the battery cell 130 more flexible.

[0114] In some implementations, please refer to Figure 6 The first receiving groove 113a extends into the body 111, and the part of the body 111 near the first opening 1131 is formed as the first stop part 1111 and cooperates with the stop of the battery cell 130.

[0115] In the above technical solution, the depth of the first receiving groove 113a is greater than the thickness of the protrusion 112, and the length of the first receiving groove 113a is less than the length of the body 111. The portion of the body 111 near the first opening 1131 is higher than the bottom point of the first receiving groove 113a, and this higher portion forms the sidewall of the first receiving groove 113a. Furthermore, this sidewall acts as a first stop 1111, which cooperates with the stop of the battery cell 130, thereby limiting the displacement of the battery cell 130 in the length direction, making the position of the battery cell 130 in the first receiving groove 113a more stable, and reducing the risk of the battery cell 130 shaking.

[0116] As an example, the battery cell 130 is laid horizontally in the first receiving groove 113a, and the inner surface of the first stop portion 1111 abuts against the end face of the battery cell 130.

[0117] In some implementations, please refer to Figures 2 to 4 A portion of the battery cell 130 is housed in the first receiving groove 113a; the battery 100 also includes a bracket 140, which is disposed above the protrusion 112 and covers the second opening 1132. A second receiving groove 141 corresponding to the first receiving groove 113a is formed on the bracket 140, and another portion of the battery cell 130 is housed in the second receiving groove 141.

[0118] In this configuration, the volume of the first receiving groove 113a is smaller than the volume of the battery cell 130. A portion of the battery cell 130 (e.g., one-third, one-half, or two-thirds) is housed within the first receiving groove 113a, while another portion of the battery cell 130 is exposed outside the first receiving groove 113a. To address this, the battery 100 is further provided with a support 140, on which a second receiving groove 141 is formed. The portion of the battery cell 130 located outside the first receiving groove 113a is housed within the second receiving groove 141.

[0119] The bracket 140 is positioned above the protrusion 112, meaning the bracket 140 is located on the side where the top surface 1121 of the protrusion 112 is located. Simultaneously, the bracket 140 covers the second opening 1132, thus protecting the battery cell 130. Furthermore, when the depth of the first receiving groove 113a is less than or equal to half the thickness or radius of the battery cell 130, the bracket 140 can also reduce the risk of the battery cell 130 slipping out of the first receiving groove 113a through the second opening 1132.

[0120] Optionally, the cavity formed by the first receiving groove 113a and the second receiving groove 141 is adapted to the outer contour of the battery cell 130, so as to better limit the battery cell 130.

[0121] Additionally, it should be noted that the bracket 140 is positioned above the protrusion 112. The bracket 140 can be directly supported on the protrusion 112, or the bracket 140 can be suspended relative to the protrusion 112. For example, the bracket 140 can be fixed on the cover 120 or fixed on the battery cell 130.

[0122] In some implementations, please refer to Figure 3 The bracket 140 is disposed on the top surface 1121. That is, the bracket 140 is disposed on the protrusion 112, and the gap between the bracket 140 and the protrusion 112 is minimized. On the one hand, the protrusion 112 can support the bracket 140, improving its stability; on the other hand, it can better protect the battery cell 130. During the assembly of the battery 100, the bracket 140 can be placed on the protrusion 112 after the battery cell 130 is placed in the first receiving slot 113a. The bracket 140 can further protect the battery cell 130 during subsequent assembly.

[0123] The bracket 140 is set on the top surface 1121. The bracket 140 can be simply erected on the top surface 1121, or the bracket 140 can be connected to the top surface 1121, such as by bonding or welding.

[0124] In some implementations, please refer to Figures 15 to 18 The base 110 is provided with a first connecting structure 150, and the bracket 140 is provided with a second connecting structure 160. The first connecting structure 150 and the second connecting structure 160 are connected.

[0125] In the above technical solution, the bracket 140 is indirectly connected to the base 110 through the first connecting structure 150 and the second connecting structure 160, which reduces the risk of the bracket 140 moving arbitrarily relative to the base 110, thereby better protecting and limiting the battery cell 130.

[0126] As mentioned above, the base 110 includes a body 111 and a protrusion 112. The first connecting structure 150 is disposed on the base 110, which may be disposed on the body 111 or on the protrusion 112.

[0127] The connection method between the first connecting structure 150 and the second connecting structure 160 is not limited here; it can be a snap-fit, interference fit, magnetic connection, or threaded connection.

[0128] In some implementations, please refer to Figure 15The first connecting structure 150 is disposed on the protrusion 112. In this way, the bracket 140 can be indirectly connected to the protrusion 112 through the first connecting structure 150 and the second connecting structure 160. Compared with the body 111, the protrusion 112 is closer to the bracket 140, so the size of the first connecting structure 150 can be effectively controlled, thereby controlling the size of the battery 100.

[0129] In some implementations, please refer to Figure 15 The first connecting structure 150 and the second connecting structure 160 are snapped together. Compared with other connecting methods, snap-fit ​​not only has high connection reliability, but also simplifies assembly.

[0130] In some implementations, please refer to Figure 16 The protrusion 112 also has a side surface 1123 that is connected to the end face 1122 and extends from the body 111 to the top face 1121. The first connecting structure 150 includes a first protrusion 151 protruding on the side surface 1123. The second connecting structure 160 includes a spring piece 161 disposed on the bracket 140 and a second protrusion 162 disposed on the spring piece 161. The spring piece 161 is configured to extend to correspond to the side surface 1123 and to engage the second protrusion 162 with the first protrusion 151.

[0131] Specifically, the protrusion 112 also has a side surface 1123. The side surface 1123, the top surface 1121, and the end surface 1122 are all outer surfaces of the protrusion 112, that is, the surfaces of the protrusion 112 located outside the receiving portion 113. The side surface 1123 is connected to both the top surface 1121 and the end surface 1122. The side surface 1123 may have one side connected to one end surface 1122, or both sides may be connected to both end surfaces 1122 respectively. The side surface 1123 extends from the body 111 to the top surface 1121 to achieve connection with the top surface 1121.

[0132] The first connecting structure 150 includes a first protrusion 151, which is disposed on the protrusion 112. Specifically, the first protrusion 151 is disposed on the side surface 1123 and protrudes from the side surface 1123.

[0133] The second connecting structure 160 includes a spring piece 161 and a second protrusion 162, the second protrusion 162 being disposed on the spring piece 161, and the spring piece 161 being disposed on the bracket 140. The spring piece 161 is configured to extend to the side 1123 of the protrusion 112, thereby causing the second protrusion 162 on the spring piece 161 to engage with the first protrusion 151.

[0134] For example, see Figure 15Referring to the orientation shown in the figure, a pair of symmetrically arranged second connecting structures 160 are respectively provided on the left and right sides of the bracket 140. Similarly, a pair of symmetrically arranged first connecting structures 150 are respectively provided on the opposite sides 1123 of the protrusion 112. The minimum distance between the two second connecting structures 160 is slightly smaller than the maximum distance between the two first connecting structures 150. Please continue to see Figure 16 With reference to the orientation shown in the figure: the first protrusion 151 is integrally disposed on the side 1123 of the protrusion 112; the spring piece 161 is integrally disposed on the bottom surface of the bracket 140 and extends downward, and the second protrusion 162 protrudes from the inner surface of the spring piece 161. During the installation of the bracket 140, by pushing the bracket 140 towards the protrusion 112, the first protrusion 151 and the second protrusion 162 abut against each other, and the spring piece 161 elastically deforms outward until the first protrusion 151 and the second protrusion 162 separate, the spring piece 161 returns to its original position, and the first protrusion 151 and the second protrusion 162 engage, thereby realizing the snap-fit ​​connection between the first connecting structure 150 and the second connecting structure 160.

[0135] Optionally, the cross-section of the first protrusion 151 can be triangular or semi-circular; similarly, the cross-section of the second protrusion 162 can be triangular or semi-circular.

[0136] In some implementations, please refer to Figure 17 and Figure 18 The first protrusion 151 has a first stop surface 1511 and a first guide slope 1512. The first stop surface 1511 is connected to the side surface 1123 and is away from the top surface 1121. In the direction away from the side surface 1123, the first guide slope 1512 extends obliquely towards the base 110. The second protrusion 162 has a second stop surface 1621 and a second guide slope 1622. The second stop surface 1621 is used to stop and cooperate with the first stop surface 1511, and the second guide slope 1622 is used to guide and cooperate with the first guide slope 1512.

[0137] During the installation of bracket 140, when the first protrusion 151 abuts against the second protrusion 162, the first guide slope 1512 on the first protrusion 151 can guide and cooperate with the second guide slope 1622 on the second protrusion 162 and guide the second protrusion 162 to move downward and outward. Then the spring piece 161 elastically deforms outward until the first guide slope 1512 and the second guide slope 1622 separate. The spring piece 161 resets, the second protrusion 162 moves inward, and the second stop surface 1621 on the second protrusion 162 cooperates with the first stop surface 1511 on the first protrusion 151 to prevent the first protrusion 151 from separating from the second protrusion 162, thereby achieving the snap-fit.

[0138] It can be seen that the first guide slope 1512 and the second guide slope 1622 can guide the first protrusion 151 and the second protrusion 162 to engage together, thereby reducing the difficulty of connection.

[0139] In another embodiment, the specific snap-fit ​​methods of the first connecting structure 150 and the second connecting structure 160 may differ. As an example, the first connecting structure 150 includes a protruding plate disposed on and protruding from the side surface 1123, with a through-hole provided on the protruding plate. The second connecting structure 160 includes a guide rod and an elastic protruding ring, the elastic protruding ring being sleeved and fixed on the outer surface of the guide rod. During the installation of the bracket 140, by pushing the bracket 140 towards the protrusion 112, the guide rod drives the elastic protruding ring to extend into the snap-hole, the elastic protruding ring deforms until it passes through the snap-hole, the elastic protruding ring resets and prevents the guide rod from retracting.

[0140] In some implementations, please refer to Figure 3 The battery 100 also includes a battery management system module 171, which is electrically connected to the terminal post 131 and fixed on the side of the bracket 140 away from the cell 130.

[0141] In the above scheme, the battery management system module 171 is fixed by the bracket 140. When the bracket 140 is connected and fixed to the base 110, the battery management system module 171 is indirectly fixed to the base 110 through the bracket 140.

[0142] By fixing the battery management system module 171 to the bracket 140, which is close to the battery cell 130, it is easy to connect the battery management system module 171 to the terminal post 131.

[0143] In some implementations, please refer to Figure 3 The battery 100 also includes a first busbar 172, which is mounted on the bracket 140. The terminal post 131 is electrically connected to the battery management system module 171 through the first busbar 172.

[0144] The first busbar 172 is a conductor, and it conducts current by connecting to the terminal 131 and the battery management system module 171 respectively. The bracket 140 also supports the first busbar 172, and the first busbar 172 and the bracket 140 form an integrated busbar (CCS).

[0145] Optionally, the first busbar 172 is a copper busbar or an aluminum busbar.

[0146] In some implementations, please refer to Figure 3 The battery 100 contains multiple cells 130, and the battery 100 also includes a second busbar 173, through which different cells 130 can be electrically connected.

[0147] In some implementations, please refer to Figure 10 and Figure 13 The battery 100 also includes a first adhesive layer 181, which is disposed on the inner surface of the first receiving groove 113a and bonds the battery cell 130 and the protrusion 112.

[0148] The first adhesive layer 181 is disposed in the first receiving groove 113a and located between the battery cell 130 and the protrusion 112. The opposite sides of the first adhesive layer 181 are respectively bonded to the battery cell 130 and the protrusion 112. In this way, the battery cell 130 and the base 110 can also be fixedly connected through the first adhesive layer 181.

[0149] As an example, the first adhesive layer 181 is a structural adhesive layer formed by the curing of glue.

[0150] In some implementations, please refer to Figure 10 and Figure 11 The battery 100 also includes a second adhesive layer 182, which is disposed on the inner surface of the second receiving groove 141 and bonds the battery cell 130 to the bracket 140.

[0151] The second adhesive layer 182 is disposed in the second receiving groove 141 and located between the battery cell 130 and the bracket 140. The opposite sides of the second adhesive layer 182 are bonded to the battery cell 130 and the bracket 140 respectively. In this way, the battery cell 130 and the bracket 140 can be fixedly connected through the second adhesive layer 182.

[0152] As an example, the second adhesive layer 182 is a structural adhesive layer formed by the curing of glue.

[0153] In some embodiments, the assembly process of the battery 100 includes: placing a base 110 with the protrusion 112 of the base 110 facing upwards; placing a battery cell 130 in a first receiving groove 113a on the protrusion 112, wherein the first receiving groove 113a is filled with glue, and the glue cures to form a first adhesive layer 181; and placing a bracket 140 on the protrusion 112 such that the battery cell 130 is partially housed in a second receiving groove 141 on the bracket 140, wherein the second receiving groove 141 is coated with glue. After the water and glue cure, a second adhesive layer 182 is formed. A first busbar 172 is fixed to the bracket 140 and connected to the battery cell 130. A battery management system module 171 is fixed to the bracket 140 and connected to the first busbar 172. Finally, the cover 10 is inverted onto the base 110, with the protrusion 112, battery cell 130, bracket 140, first busbar 172, and battery management system module 171 all covered by the cover 10. It can be seen that during the assembly of the battery 10, by fixing different components layer by layer, the connection between different components in the battery 10 becomes more stable and reliable. Furthermore, the installation effect can be immediately checked after each layer of components is installed, which is beneficial for controlling the assembly effect of the battery 10 and thus ensuring the performance of the battery 10.

[0154] In some implementations, please refer to Figure 14 The receiving portion 113 is a receiving hole 113b extending along a first direction, which is the direction from one end face 1122 to the other end face 1122.

[0155] In other words, the receiving portion 113 is specifically a receiving hole 113b, which has a continuous sidewall in the circumferential direction. Therefore, the receiving portion 113 typically only has a first opening 1131. When placing the battery cell 130, the battery cell 130 can be placed into the receiving hole 113b through the first opening 1131. The sidewall of the receiving hole 113b can protect and limit the battery cell 130, eliminating the need for an additional support 140, thus simplifying the structure of the battery 100.

[0156] In some implementations, please refer to Figure 14 The receiving hole 113b is either a through hole or a blind hole.

[0157] The receiving hole 113b extends from one end face 1122 of the protrusion 112 into the protrusion 112 along a first direction. When the receiving hole 113b does not extend to the other end face 1122 of the protrusion 112, the receiving hole 113b is a blind hole, and the depth of the receiving hole 113b is less than the dimension of the protrusion 112 in the first direction. When the receiving hole 113b extends to the other end face 1122 of the protrusion 112, the receiving hole 113b is a through hole, and the depth of the receiving hole 113b is equal to the dimension of the protrusion 112 in the first direction.

[0158] When the receiving hole 113b is a blind hole, the battery cell 130 can be better protected and limited. In addition, the battery cell 130 can be bonded to the inner wall of the receiving hole 113b by injecting glue into the blind hole and curing the glue, thereby improving the fixation effect between the battery cell 130 and the base 110.

[0159] When the receiving hole 113b is a through hole, that is, the receiving hole 113b has two first openings 1131, the battery cell 130 is placed in the through hole, and the terminals 131 can be led out from both ends of the battery cell 130, which enriches the way the battery cell 130 is electrically connected to electrical components outside the battery cell; in addition, the first explosion-proof valve 132 can be set at both ends of the battery cell 130 to reduce the risk of the battery cell 130 exploding due to thermal runaway.

[0160] In some implementations, please refer to Figure 14 The minimum distance between the edge of the receiving hole 113b and the body 111 is greater than or equal to 0. Since the first opening 1131 not only serves to avoid the pole post 131 and the first explosion-proof valve 132, but also acts as an installation inlet for the battery cell 130 to extend into the receiving hole 113b, increasing the minimum distance between the edge of the receiving hole 113b and the body 111 raises the position of the first opening 1131, reducing the risk of interference between the body 111 and the battery cell 130, and making the process of the battery cell 130 extending into the receiving hole 113b smoother. As an example, the minimum distance between the edge of the receiving hole 113b and the body 111 is 0, 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm.

[0161] In some embodiments, the battery 100 also includes a battery management system module 171, which is electrically connected to the terminal post 131 and fixed on the top surface 1121.

[0162] In the above solution, the battery management system module 171 is directly fixed to the base 110 by being fixed to the top surface 1121 of the protrusion 112. Since the battery cell 130 is fixed in the receiving hole 113b on the protrusion 112, and the battery management system module 171 is fixed to the outer surface of the protrusion 112, the battery management system module 171 and the battery cell 130 are fixed on the same component, making the electrical connection between them more stable and reliable.

[0163] In some embodiments, the battery 100 further includes a first busbar 172 disposed on the top surface 1121, and the terminal post 131 is electrically connected to the battery management system module 171 through the first busbar 172.

[0164] The first busbar 172 is a conductor, and it conducts current by connecting to the terminal 131 and the battery management system module 171 respectively. In this case, the protrusion 112 also serves to support the first busbar 172, thereby fixing the battery management system module 171, the battery cell 130, and the first busbar 172 on the same component, making the electrical connection between the three more stable and reliable.

[0165] In some embodiments, the battery 100 further includes a first adhesive layer 181, which is disposed on the inner surface of the receiving hole 113b and bonds the battery cell 130 to the protrusion 112.

[0166] The first adhesive layer 181 is disposed in the receiving hole 113b and located between the battery cell 130 and the protrusion 112. The opposite sides of the first adhesive layer 181 are bonded to the battery cell 130 and the protrusion 112 respectively. In this way, the battery cell 130 and the base 110 can also be fixedly connected through the first adhesive layer 181.

[0167] As an example, the first adhesive layer 181 is a structural adhesive layer formed by the curing of glue.

[0168] In some embodiments, the assembly process of the battery 100 includes: placing a base 110, wherein a receiving hole 113b is provided on a protrusion 112 of the base 110; inserting a battery cell 130 into the receiving hole 113b; fixing a first busbar 172 on the top surface 1123 of the protrusion 112 and connecting the first busbar 172 to the battery cell 130; fixing a battery management system module 171 on the top surface 1123 of the protrusion 112 and connecting the battery management system module 171 to the first busbar 172; and finally inverting the cover 10 onto the base 110, with the protrusion 112, battery cell 130, first busbar 172, and battery management system module 171 all covered by the cover 10. Compared to the previous method, this battery 10 omits the bracket 140, making the assembly process of the battery 100 simpler, and the electrical connection between the battery cell 130, first busbar 172, and battery management system module 171 is more stable and reliable.

[0169] In some implementations, please refer to Figure 10 and Figure 12 The main body 111 has an annular groove 1112 surrounding the protrusion 112, and the cover 120 has an insertion part 122, which is inserted into the annular groove 1112.

[0170] An annular groove 1112 is formed on the main body 111, and the annular groove 1112 is located around the protrusion 112. Correspondingly, an insertion part 122 is formed on the cover 120. The insertion part 122 is inserted into the annular groove 1112 of the base 110 as part of the cover 120, thereby enabling the cover 120 to be installed together with the base plate 110. By setting the annular groove 1112 to cooperate with the insertion part 122, the cover 120 can be positioned, reducing the difficulty of aligning the cover 120 with the base plate 110. Since the annular groove 1112 surrounds the protrusion 112, when the insertion part 122 of the cover 120 is inserted into the annular groove 1112, the protrusion 112 is also simultaneously covered inside the cover 120.

[0171] As an example, the insertion part 122 is a ring reinforcement.

[0172] In some implementations, please refer to Figure 12 The battery 100 also includes a seal 191, which is disposed in the annular groove 1112 and located between the plug portion 122 and the body 111.

[0173] By providing a seal 191 in the annular groove 1112, the seal 191 is located between the plug-in part 122 and the groove wall of the annular groove 1112, i.e. the body 111. The seal 191 can seal the gap between the plug-in part 122 and the body 111, reducing the risk of external substances entering the cavity 121 of the cover 120 and improving the safety of the battery cell 130 in the cavity 121.

[0174] As one example, the seal 191 is a silicone ring, which is clamped between the insertion portion 122 and the body 111. As another example, the seal 191 is a sealant layer formed by the curing of adhesive.

[0175] In some implementations, please refer to Figures 7 to 8 The base 110 also includes a mounting part 114, which is disposed on the body 111 and spaced apart from the protrusion 112.

[0176] Mounting part 114 is mainly used to connect to a device that carries battery 100, such as electrical device 200. As an example, battery 100 is mounted on the vehicle body, and mounting part 114 is connected to the vehicle body.

[0177] The mounting portion 114 is provided on the body 111, but the mounting portion 114 is spaced apart from the protrusion 112. The remaining space between the mounting portion 114 and the protrusion 112 can be used to install the cover 120. The cover 120 usually separates the protrusion 112 from at least part of the mounting portion 114. The protrusion 112 is covered by the cover 120, while the mounting portion 114 is at least partially exposed outside the cover 120.

[0178] In other words, in the above scheme, the base 110 is used not only to support the battery cell 130, but also to connect and fix it to the device that supports the battery 100. In this way, the position of the base 110 can be further defined, thereby better supporting the battery cell 130 and reducing the risk of battery cell 130 failure during battery 100 use.

[0179] The number of mounting parts 114 on the base 110 can be one or more. As an example, there are four mounting parts 114, which are distributed in pairs on both sides of the main body 111.

[0180] In some implementations, please refer to Figure 8 The mounting part 114 includes a first plate 1141, a second plate 1142 and a third plate 1143. The first plate 1141 extends outward from the side of the body 111. The second plate 1142 and the third plate 1143 are spaced apart on the side surface of the first plate 1141 near the cover 120 and partially extend to the surface of the body 111. The cover 120 has a first slot 123 and a second slot 124 that are respectively inserted and engaged with the second plate 1142 and the third plate 1143.

[0181] The mounting section 114 is U-shaped, with a first plate 1141 serving as the base plate, and a second plate 1142 and a third plate 1143 serving as side plates. The first plate 1141 is connected to the main body 111 and extends outward from the side of the main body 111. The second plate 1142 and the third plate 1143 are spaced apart on the same side surface of the first plate 1141, specifically on the side surface of the first plate 1141 closest to the cover 120. A portion of the second plate 1142 further extends to the surface of the main body 111, and a portion of the third plate 1143 also further extends to the surface of the main body 111. In other words, the second plate 1142 is connected to both the first plate 1141 and the main body 111, and the third plate 1143 is also connected to both the first plate 1141 and the main body 111. The cover 120 has a first slot 123 and a second slot 124. When the cover 120 is placed on the body 111, the first slot 123 is used to avoid the second plate 1142 and to be inserted into the second plate 1142. The second slot 124 is used to avoid the third plate 1143 and to be inserted into the third plate 1143.

[0182] The above configuration not only makes the connection between the mounting part 114 and the body 111 more reliable, but also allows a portion of the mounting part 114 to extend into the cover 120. This helps to reduce the size of the mounting part 114 protruding from the body 111 while ensuring the performance of the mounting part 114, thereby controlling the size of the base 110.

[0183] In some implementations, please refer to Figure 8The first plate 1141 is provided with a mounting through hole 1144. The mounting through hole 1144 is used to connect and fix the mounting part 114 to the device carrying the battery 100. As an example, the mounting through hole 1144 is a smooth hole or a threaded hole.

[0184] In some embodiments, the battery cell 130 is fixedly disposed within the receiving portion 113. That is, the battery cell 130 cannot move arbitrarily within the receiving portion 113. By fixing the battery cell 130, the risk of damage caused by movement of the battery cell 130 can be reduced. As an example, the battery cell 130 can be fixedly disposed within the receiving portion 113 by bonding or interference fit.

[0185] In some implementations, please refer to Figure 2 The portion of the battery cell 130 located within the receiving portion 113 is adapted to the receiving portion 113. This arrangement also allows for further positioning using the receiving portion 113.

[0186] In some implementations, please refer to Figure 3 The main body 111 is flat. In this way, the protrusion 112 protrudes from the main body 111, and the protrusion 112 is higher than the main body 111, which can better expose the first opening 1131.

[0187] In some implementations, please refer to Figure 10 The radial dimension of the cavity 121 decreases in the direction away from the base 110.

[0188] The above configuration allows for a larger opening in the cavity 121. This facilitates the covering of the cover 120 over the protrusion 112 during assembly and also makes the manufacturing of the cover 120 easier, especially when the cover 120 is a plastic part, as it facilitates demolding.

[0189] In some implementations, please refer to Figure 2 The cover 120 is cap-shaped, and its radial dimension decreases in the direction away from the base 110. This design helps to control the volume of the battery 100.

[0190] In some implementations, please refer to Figure 10 The angle between the inner wall of the cavity 121 and the plane of the base 110 is 88° to 89°. That is, the inner wall of the cavity 121 extends slightly outward, which can form a draft angle of 1° to 2°, which is beneficial for demolding the cover 120 during manufacturing. Optionally, the cover 120 is a plastic part.

[0191] In some implementations, please refer to Figure 2A second explosion-proof valve 192, which communicates with the cavity 121, is provided on the cover 120. The second explosion-proof valve 192 is located on the cover 120 and communicates with the cavity 121 on the cover 120. In this way, when the cell 130 experiences thermal runaway and causes a sharp increase in pressure in the cavity 121, the battery 100 can continue to release the explosion through the second explosion-proof valve 192.

[0192] In some implementations, please refer to Figure 2 The battery cell 130 is cylindrical. The cylindrical battery cell 130 exhibits better resistance to expansion during cycling, allowing for better compatibility with the structure of the base 110. Of course, in other embodiments, the battery cell 130 can also be square, hexagonal prism, etc. When the battery cell 130 is cylindrical, the receiving portion 113 is adapted to the battery cell 130; when the receiving portion 113 is a first receiving groove 113a, the radial cross-section of the first receiving groove 113a is semi-circular; when the receiving portion 113 is a receiving hole 113b, the radial cross-section of the receiving hole 113b is circular.

[0193] In some implementations, please refer to Figure 1 Battery 100 is a battery pack.

[0194] In some implementations, the battery pack is a low-voltage battery pack with an output voltage less than or equal to 48V. For example, battery 100 can be a 12V low-voltage battery pack, a 24V low-voltage battery pack, or a 48V low-voltage battery pack.

[0195] In some implementations, the low-voltage battery pack is a starter battery pack. A starter battery pack, also known as a starting power supply, is a power source used to provide initial power to a device or system to start it up. As an example, a starter battery pack includes an automotive starter power supply.

[0196] Secondly, please see Figure 19 This application embodiment also provides an electrical device 200, which includes the battery 100 as described above.

[0197] The power device 200 includes the battery 100 described above, and the power device 200 has all the beneficial effects of the battery 100 described above, which will not be repeated here.

[0198] It should be noted that the electrical device 200 includes, but is not limited to, at least one of a vehicle and a processing tool. For example, a vehicle includes a vehicle, an aircraft, etc.; a processing tool includes an electric drill, an electric screwdriver, etc.

[0199] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery (100) characterized in that, include: The base (110) includes a body (111) and a protrusion (112) protruding from the body (111), and a receiving portion (113) is formed on the protrusion (112); A cover (120) is disposed on the body (111), and a cavity (121) is formed on the cover (120). The protrusion (112) extends into the cavity (121), and the radial dimension of the cover (120) decreases in the direction away from the base (110). A battery cell (130), at least a portion of which is disposed within the receiving portion (113).

2. The battery (100) according to claim 1, characterized in that The protrusion (112) has a top surface (1121) facing away from the body (111) and two opposite end surfaces (1122), the end surfaces (1122) extending from the body (111) to the top surface (1121); the receiving portion (113) is open on at least one of the end surfaces (1122) to form a first opening (1131), the first opening (1131) being at least partially exposed outside the body (111), and the battery cell (130) has a terminal (131) corresponding to the first opening (1131).

3. The battery (100) according to claim 2, characterized in that The battery (100) also includes a battery management system module (171), which is electrically connected to the terminal (131) and is fixed on the base (110).

4. The battery (100) according to claim 2, characterized in that The battery cell (130) also has a first explosion-proof valve (132), which corresponds to the first opening (1131).

5. The battery (100) according to claim 2, characterized in that, The receiving portion (113) is a first receiving groove (113a), which is openly provided on the top surface (1121) of the protrusion (112) to form a second opening (1132).

6. The battery (100) according to claim 5, characterized in that The first receiving groove (113a) extends into the body (111), and the portion of the body (111) near the first opening (1131) is formed as a first stop (1111), and the first stop (1111) cooperates with the stop of the battery cell (130).

7. The battery (100) according to claim 5, characterized in that A portion of the battery cell (130) is housed in the first receiving groove (113a); the battery (100) also includes a bracket (140), which is disposed above the protrusion (112) and covers the second opening (1132). A second receiving groove (141) corresponding to the first receiving groove (113a) is formed on the bracket (140), and another portion of the battery cell (130) is housed in the second receiving groove (141).

8. The battery (100) according to claim 7, characterized in that The bracket (140) is disposed on the top surface (1121).

9. The battery (100) according to claim 8, characterized in that The base (110) is provided with a first connecting structure (150), and the bracket (140) is provided with a second connecting structure (160). The first connecting structure (150) is connected to the second connecting structure (160).

10. The battery (100) according to claim 9, characterized in that The first connecting structure (150) is disposed on the protrusion (112).

11. The battery (100) according to claim 10, characterized in that The first connecting structure (150) is snapped into the second connecting structure (160).

12. The battery (100) according to claim 11, characterized in that The protrusion (112) also has a side surface (1123), which is connected to the end face (1122) and extends from the body (111) to the top surface (1121). The first connecting structure (150) includes a first protrusion (151) protruding on the side surface (1123). The second connecting structure (160) includes a spring piece (161) disposed on the bracket (140) and a second protrusion (162) disposed on the spring piece (161). The spring piece (161) is configured to extend to correspond to the side surface (1123) and such that the second protrusion (162) engages with the first protrusion (151).

13. The battery (100) according to claim 12, characterized in that The first protrusion (151) has a first stop surface (1511) and a first guide slope (1512). The first stop surface (1511) is connected to the side surface (1123) and is located away from the top surface (1121). In the direction away from the side surface (1123), the first guide slope (1512) extends obliquely toward the base (110). The second protrusion (162) has a second stop surface (1621) and a second guide slope (1622). The second stop surface (1621) is used to stop and cooperate with the first stop surface (1511), and the second guide slope (1622) is used to guide and cooperate with the first guide slope (1512).

14. The battery (100) of claim 7, wherein, The battery (100) also includes a battery management system module (171), which is electrically connected to the terminal (131) and is fixed on the side of the bracket (140) away from the cell (130).

15. The battery (100) according to claim 14, characterized in that The battery (100) further includes a first busbar (172), which is disposed on the bracket (140), and the terminal (131) is electrically connected to the battery management system module (171) through the first busbar (172).

16. The battery (100) of claim 7, wherein, The battery (100) further includes a first adhesive layer (181), which is disposed on the inner surface of the first receiving groove (113a) and the first adhesive layer (181) bonds the cell (130) to the protrusion (112).

17. The battery (100) according to claim 16, characterized in that The battery (100) further includes a second adhesive layer (182), which is disposed on the inner surface of the second receiving groove (141) and the second adhesive layer (182) bonds the cell (130) to the bracket (140).

18. The battery (100) of claim 2, wherein, The receiving portion (113) is a receiving hole (113b) extending along a first direction, which is the direction from one end face (1122) to the other end face (1122).

19. The battery (100) according to claim 18, characterized in that The receiving hole (113b) is a through hole or a blind hole.

20. The battery (100) of claim 18, wherein, The minimum distance between the edge of the receiving hole (113b) and the body (111) is greater than or equal to 0.

21. The battery (100) of claim 18, wherein, The battery (100) also includes a battery management system module (171), which is electrically connected to the terminal (131) and is fixed on the top surface (1121).

22. The battery (100) according to claim 21, characterized in that The battery (100) further includes a first busbar (172), which is disposed on the top surface (1121), and the terminal (131) is electrically connected to the battery management system module (171) through the first busbar (172).

23. The battery (100) of claim 18, wherein, The battery (100) further includes a first adhesive layer (181), which is disposed on the inner surface of the receiving hole (113b) and the first adhesive layer (181) bonds the cell (130) to the protrusion (112).

24. The battery (100) according to any one of claims 1 to 23, characterized in that The body (111) has an annular groove (1112) surrounding the protrusion (112), and the cover (120) has a plug (122) inserted into the annular groove (1112).

25. The battery (100) of claim 24, characterized in that, The battery (100) further includes a seal (191) disposed in the annular groove (1112) and located between the plug portion (122) and the body (111).

26. The battery (100) according to any one of claims 1 to 23, characterized in that The base (110) further includes a mounting portion (114), which is disposed on the body (111) and is spaced apart from the protrusion (112).

27. The battery (100) according to claim 26, characterized by The mounting portion (114) includes a first plate (1141), a second plate (1142), and a third plate (1143). The first plate (1141) extends outward from the side of the body (111). The second plate (1142) and the third plate (1143) are spaced apart on the side surface of the first plate (1141) near the cover (120). A portion of the second plate (1142) and a portion of the third plate (1143) also extend to the surface of the body (111). A first slot (123) and a second slot (124) are formed on the cover (120). The first slot (123) and the second slot (124) are respectively inserted into the second plate (1142) and the third plate (1143).

28. The battery (100) according to claim 27, characterized by The first plate (1141) is provided with a mounting through hole (1144).

29. The battery (100) according to any one of claims 1 to 23, characterized in that The portion of the battery cell (130) located within the receiving portion (113) is adapted to the receiving portion (113); and / or, the battery cell (130) is fixedly disposed within the receiving portion (113).

30. The battery (100) according to any one of claims 1 to 23, characterized in that The body (111) is flat plate shaped; and / or, the protruding part (112) is higher than the body (111).

31. The battery (100) according to any one of claims 1 to 22, characterized in that The radial dimension of the accommodating cavity (121) decreases in a direction away from the base (110).

32. The battery (100) according to claim 31, characterized by The included angle between the inner side wall surface of the accommodating cavity (121) and the plane where the base (110) is located is 88°-89°.

33. The battery (100) according to any one of claims 1 to 23, characterized by A second explosion-proof valve (192) in communication with the accommodating cavity (121) is arranged on the cover (120).

34. The battery (100) according to any one of claims 1 to 23, characterized by The electric core (130) is cylindrical.

35. The battery (100) according to any one of claims 1 to 23, characterized by The battery (100) is a battery pack.

36. The battery (100) of claim 35, wherein, The battery pack is a low-voltage battery pack, and the output voltage of the low-voltage battery pack is less than or equal to 48V.

37. The battery (100) according to claim 36, characterized by The low-voltage battery pack is a starting battery pack.

38. An electrical device (200) comprising: The battery (100) according to any one of claims 1-37 is included.

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