Battery module, output pole assembly, battery and electric equipment

Abstract

The utility model discloses a battery module, an output pole assembly, a battery and electric equipment, the battery module comprises an end plate, a bearing part and a limiting structure, and the bearing part is inserted into the end plate along a first direction; the limiting structure comprises at least two limiting faces oppositely arranged in the second direction, and the limiting faces are arranged on one of the bearing piece and the end plate and are in interference fit with the other one of the bearing piece and the end plate. Wherein an included angle is formed between the second direction and the first direction. According to the technical scheme provided by the embodiment of the invention, the possibility that the bearing part shakes relative to the end plate can be reduced, and the structural stability of the battery module is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module, an output electrode assembly, a battery and an electrical device. Background Art

[0002] The battery module is usually provided with a carrier and an end plate, but the connection between the carrier and the end plate in the related art is not stable enough, which causes the carrier to shake or tilt relative to the end plate. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a battery module, an output pole assembly, a battery and an electrical device.

[0004] The first aspect of the present application provides a battery module, including an end plate, a carrier and a limiting structure, wherein the carrier is plugged into the end plate along a first direction; the limiting structure includes at least two limiting surfaces arranged relatively along a second direction, the limiting surfaces are arranged on one of the carrier and the end plate, and are interference fit with the other of the carrier and the end plate; wherein the second direction is arranged at an angle to the first direction.

[0005] In the technical solution provided in the embodiment of the present application, the end plate can be arranged on one side of the battery module, the carrier can be used to carry the output pole of the battery module, and the carrier can be plugged into the end plate along the first direction, so as to fix the output pole relative to the end of the battery module. On this basis, the battery module also includes a limiting structure, the limiting structure includes at least two limiting surfaces arranged relatively along the second direction, the limiting surface is arranged in one of the carrier and the end plate, and is interference fit with the other of the carrier and the end plate. Since at least two limiting surfaces are arranged relatively, the forces on the two limiting surfaces are opposite, and the second direction and the first direction are arranged at an angle, that is, the force direction borne by the limiting surface is different from the direction in which the carrier is plugged into the end plate, so that the limiting surface is interference fit with the other of the carrier and the end plate. The interference fit can increase the connection stability between the carrier and the end plate, and effectively reduce the possibility of the carrier shaking relative to the end plate. Compared with the solution in the related art that lacks effective support between the bearing member and the end plate, a limiting structure is provided in the present application. The limiting structure enables the bearing member and the end plate to fit closely through two relatively arranged limiting surfaces, so as to reduce the possibility of the bearing member shaking relative to the end plate and improve the connection stability of the bearing member.

[0006] In some embodiments of the present application, the limiting structure includes a limiting portion, the limiting portion is connected to the bearing member; wherein at least two limiting surfaces are opposite surfaces of the limiting portion; or, there are at least two limiting portions, at least two limiting portions are respectively arranged on opposite sides of the bearing member, and the limiting surface is located on the side of the limiting portion away from the bearing member. Here, at least two limiting surfaces are arranged on opposite surfaces of the same limiting portion, and the structure is more compact and easy to install; at least two limiting surfaces are respectively arranged on different limiting portions, so that the bearing member is also used to provide support force, and the structural strength is higher.

[0007] In some embodiments of the present application, at least two limiting surfaces in the limiting structure are parallel to each other, or at least two limiting surfaces in the limiting structure are arranged at an angle. Here, at least two limiting surfaces are arranged parallel to each other, the structure is relatively simple, and it is convenient to assemble the bearing member and the end plate; when at least two limiting surfaces are arranged at an angle, support in more directions can be provided to further reduce the possibility of relative shaking between the bearing member and the end plate.

[0008] In some embodiments of the present application, the limiting structure includes a plurality of limiting parts, and the plurality of limiting parts are arranged at intervals along the first direction. Here, by providing a plurality of limiting parts arranged at intervals, the limiting structure can provide effective limiting for the bearing member and the end plate while reducing the size of the limiting structure and saving materials, so as to reduce the possibility of the bearing member shaking relative to the end plate.

[0009] In some embodiments of the present application, the end plate is provided with a limiting groove corresponding to the limiting portion, and the limiting portion is connected in the limiting groove along the first direction. Here, by providing the limiting groove, the limiting portion can be accommodated in the limiting groove, which is more convenient for the matching and limiting of the limiting structure.

[0010] In some embodiments of the present application, the end plate further includes a shielding portion, which blocks the end of the limiting groove away from the limiting portion. Here, since the end plate is provided with a shielding portion to block the end of the limiting groove, on the one hand, it can provide positioning for the limiting portion, and on the other hand, it can improve the sealing of the battery module.

[0011] In some embodiments of the present application, the limiting portion and / or the limiting groove is provided with a guiding slope, and the guiding slope is provided at an angle with the first direction. Here, by providing the guiding slope on at least one of the limiting portion and the limiting groove, since the guiding slope is provided at an angle with the first direction, when the bearing member is plugged into the end plate, the guiding slope can guide the limiting portion to quickly enter the corresponding limiting groove, making the assembly of the bearing member and the end plate more convenient.

[0012] In some embodiments of the present application, at least one limiting surface on the limiting part is connected to a guiding inclined surface, or guiding inclined surfaces are respectively provided on opposite sides of the limiting part. Here, the guiding inclined surface can be provided on one side or multiple sides of the limiting part, and the guiding inclined surface is connected to one limiting surface of the limiting part, which has a relatively simple structure. The guiding inclined surfaces are respectively provided on opposite sides of the limiting part, which is more conducive to guiding the assembly of the bearing member and the end plate.

[0013] In some embodiments of the present application, the bearing member includes a connecting portion and a bearing portion, the connecting portion is plugged into the end plate, the bearing portion protrudes from the end plate, and the limiting direction of the limiting surface is set at an angle to the protruding direction of the bearing portion. Here, the bearing member is plugged into the end portion through the connecting portion, and the bearing portion protrudes from the end plate to facilitate the connection of the output pole, and the limiting direction of the limiting surface is set at an angle to the protruding direction of the bearing portion, which can effectively reduce the possibility of shaking caused by the protrusion of the bearing portion.

[0014] In some embodiments of the present application, the carrier includes a clamping portion, which is arranged on at least one side of the carrier along a third direction, the clamping portion is clamped to the end plate, the limiting structure is connected to the clamping portion, or the limiting structure is arranged on the side of the carrier where the clamping portion is arranged; wherein the third direction is arranged at an angle to the limiting direction of the limiting surface. Here, a clamping portion is also arranged on the carrier, which is clamped to the end plate through the clamping portion to improve the connection stability between the carrier and the end plate. The limiting structure and the clamping portion can be arranged on the same or different sides of the carrier. When arranged on the same side, the structure is more compact, and when arranged on different sides, the force on the carrier is more dispersed.

[0015] In some embodiments of the present application, the limiting structure is arranged on the side of the carrier where the clamping portion is arranged, and the limiting structure and the clamping portion are spaced apart. Here, the limiting structure and the clamping portion are arranged on the same side of the carrier, the structure is more compact, and the two are spaced apart, which makes it easier to arrange the limiting structure and makes the force on the carrier more dispersed.

[0016] In some embodiments of the present application, there are multiple limiting structures, and the multiple limiting structures are symmetrically distributed on opposite sides of the bearing member. Here, by setting multiple limiting structures, on the one hand, more limiting can be provided to further improve the connection stability between the bearing member and the end plate, and on the other hand, the limiting structures set on the opposite sides of the bearing member make the force on the bearing member more balanced.

[0017] In some embodiments of the present application, the limiting structure also includes an elastic portion, which is connected to one of the end plate and the supporting member, and elastically abuts against the other of the end plate and the supporting member along a fourth direction, and the elastic portion can be elastically deformed at least along the fourth direction; wherein the fourth direction is set at an angle to the first direction.

[0018] The second aspect of the present application provides an output pole assembly, including a carrier and a limiting structure, wherein the carrier is plugged into the end plate of the battery module along a first direction; the limiting structure is arranged on the carrier, and the limiting structure includes at least two limiting surfaces arranged relatively along a second direction, and the limiting surfaces are interference fit with the end plate; wherein the second direction is arranged at an angle to the first direction.

[0019] In the technical solution of the embodiment of the present application, the output pole assembly includes a carrier and a limiting structure. The carrier can be plugged into the end plate of the battery module along a first direction. The limiting structure enables the carrier and the end plate to fit tightly through two relatively arranged limiting surfaces, so as to reduce the possibility of the carrier shaking relative to the end plate and improve the connection stability of the carrier.

[0020] A third aspect of the present application provides a battery, comprising a conductive member and at least one battery module of the first aspect, wherein the battery module comprises an output pole, the output pole is arranged on a carrier, and the conductive member is used to electrically connect the output pole of at least one battery module.

[0021] In the technical solution of the embodiment of the present application, since the battery includes the battery module of the first aspect, it has the same technical effect, that is, a limiting structure is provided in the present application, and the limiting structure enables the support member and the end plate to fit closely through two relatively arranged limiting surfaces, so as to reduce the possibility of the support member shaking relative to the end plate and improve the connection stability of the support member.

[0022] A fourth aspect of the present application provides an electrical device, comprising the electrical device and the battery of the third aspect, wherein the conductive element of the battery is electrically connected to the electrical device.

[0023] In the technical solution of the embodiment of the present application, since the electrical equipment includes the battery of the third aspect, it has the same technical effect, that is, a limiting structure is provided in the present application, and the limiting structure enables the support member and the end plate to fit closely through two relatively arranged limiting surfaces, so as to reduce the possibility of the support member shaking relative to the end plate and improve the connection stability of the support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 It is a schematic diagram of the exploded structure of the bearing member and the end plate;

[0026] Figure 2 is a schematic diagram of the connection structure between the bearing member and the end plate;

[0027] Figure 3A schematic diagram of a partial explosion structure of a battery module provided in an embodiment of the present application;

[0028] Figure 4 Provided in the embodiments of this application Figure 3 A local enlarged schematic diagram of the middle A;

[0029] Figure 5 A schematic diagram of the connection between the carrier and the end plate in the battery module provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of a limiting portion in a battery module provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the internal structure of a battery module provided in an embodiment of the present application;

[0032] Figure 8 Provided in the embodiments of this application Figure 7 A partial enlarged schematic diagram of point B in the middle;

[0033] Fig. 9 A schematic diagram of the structure of a battery module provided in an embodiment of the present application;

[0034] Fig.10 A schematic diagram of the structure of the elastic part in the battery module provided in an embodiment of the present application;

[0035] Fig.11 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0036] Fig.12 A schematic diagram of the structure of an electrical device provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1-end plate; 11-connecting groove; 12-shielding part; 2-carrying member; 21-connecting part; 22-carrying part; 23-clamping part; 3-limiting structure; 31-limiting surface; 32-limiting part; 33-limiting groove; 34-guiding slope; 35-elastic part; 4-housing; 5-output pole; 6-battery cell; 7-box; 8-conductive member; 9-electrical appliance; x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION

[0039] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0041] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0047] Below, this application is described in detail.

[0048] Batteries are increasingly used in life and industry. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, and aerospace and other fields. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0049] In order to provide support for the components outside the battery module, refer to Figure 1 , Figure 2 and Fig. 9 The battery module usually includes an end plate 1 and a carrier 2. The carrier 2 is connected to the end plate 1 by plugging or the like. In order to facilitate the connection between the carrier 2 and the end plate 1, the limit between the two is relatively loose. However, the carrier 2 needs to carry components such as the output pole 5, and is prone to shaking or tilting under the action of gravity, thereby affecting components such as the output pole 5 carried thereon.

[0050] In view of the problems existing in the above-mentioned related technologies, this application proposes a battery module. Figure 3 , Figure 4 and Figure 5 The battery module includes an end plate 1, a carrier 2 and a limiting structure 3, wherein the carrier 2 is plugged into the end plate 1 along a first direction x; the limiting structure 3 includes at least two limiting surfaces 31 arranged opposite to each other along a second direction y, wherein the limiting surface 31 is arranged on one of the carrier 2 and the end plate 1, and is interference fit with the other of the carrier 2 and the end plate 1; wherein the second direction y is arranged at an angle to the first direction x.

[0051] In the present application, refer to Figure 7 and Fig. 9 The battery module may further include a shell 4, the shell 4 and the end plate 1 enclose a cavity to accommodate the battery cell 6, the end plate 1 can be arranged on one side of the shell 4, the end plate 1 can be arranged on one side of the shell 4 along the length direction, or on one side of the shell 4 along the width direction or the height direction. The end plate 1 can be round, square, etc., and the embodiment of the present application is not limited to this.

[0052] In an embodiment of the present application, the carrier 2 can be used to support the output pole 5 of the battery module, and the output pole 5 is electrically connected to the battery cell 6 in the shell 4. Alternatively, the carrier 2 is used to support other components on the outside of the battery module. The carrier 2 can be a block structure, a plate structure, a rod structure, etc.

[0053] For example, the carrier 2 is approximately a square plate-shaped structure, and the carrier 2 is used to support the output pole 5. The output pole 5 can be clamped on the carrier 2, or the output pole 5 is connected to the carrier 2 by bonding, welding, fastener connection, etc. Since the output pole 5 needs to be conductive, the carrier 2 can be made of insulating materials such as plastic, and the output pole 5 is connected to the carrier 2 by fasteners such as screws.

[0054] In the embodiment of the present application, the supporting member 2 is plugged into the end plate 1, specifically, a connecting hole or a connecting groove 11 is provided on the end plate 1, the central axis of the connecting hole is set along the first direction x, and the sliding direction of the connecting groove 11 is set along the first direction x, and the supporting member 2 can be connected to the connecting hole or the connecting groove 11 along the first direction x, and the inner wall of the connecting hole or the connecting groove 11 provides a limit for the supporting member 2, wherein the first direction x can be a direction perpendicular to the end plate 1, or a direction parallel to the end plate 1.

[0055] In the embodiment of the present application, the limiting structure 3 can be the outer surface of the supporting member 2 and the inner surface of the end plate 1. The limiting structure 3 can also be a protrusion or groove arranged on the supporting member 2, or, the limiting structure 3 can be a protrusion or groove arranged on the end plate 1.

[0056] In the embodiment of the present application, the limiting structure 3 may include at least two limiting surfaces 31, wherein two limiting surfaces 31 are relatively arranged along the second direction y as a group to form an interference fit structure, and multiple limiting surfaces 31 may form multiple interference fit structures. The limiting surface 31 may be arranged on the bearing member 2 so as to have an interference fit with the end plate 1, or the limiting surface 31 may be arranged on the end plate 1 so as to have an interference fit with the bearing member 2. The limiting surface 31 may be a plane or a curved surface, or the limiting surface 31 may include a plane portion and a curved surface portion.

[0057] Taking the limit surface 31 set on the carrier 2 as an example, the interference fit between the limit surface 31 and the end plate 1 is that the distance between the two relatively set limit surfaces 31 is greater than the distance between the two contact surfaces of the end plate 1 in contact with it, so that the limit surface 31 can be interference fit with the corresponding contact surface to achieve a tight connection between the two.

[0058] In the embodiment of the present application, the angle between the second direction y and the first direction x can be an obtuse angle, a right angle or an acute angle. For example, the second direction y is set at a right angle to the first direction x, that is, the second direction y is any direction perpendicular to the first direction x. For example, the first direction x is set perpendicular to the end plate 1, and the second direction y can be the length direction or width direction of the end plate 1.

[0059] In the battery module provided in the embodiment of the present application, the end plate 1 is arranged on one side of the battery module, and the output pole 5 of the battery module is arranged on the carrier 2 and supported by the carrier 2. The carrier 2 can be inserted into the end plate 1 along the first direction x, so as to fix the output pole 5 relative to the end of the battery module.

[0060] On this basis, the battery module also includes a limiting structure 3, which includes at least two limiting surfaces 31 relatively arranged along the second direction y, and the limiting surface 31 is arranged on one of the carrier 2 and the end plate 1, and is interference fit with the other one of the carrier 2 and the end plate 1. Since at least two relatively arranged limiting surfaces 31 are provided, the forces on the two limiting surfaces 31 are opposite, and the second direction y and the first direction x are arranged at an angle, that is, the force direction borne by the limiting surface 31 is different from the direction in which the carrier 2 is inserted into the end plate 1, so that the limiting surface 31 is interference fit with the other one of the carrier 2 and the end plate 1. The interference fit can increase the connection stability between the carrier 2 and the end plate 1, and effectively reduce the possibility of the carrier 2 shaking relative to the end plate 1.

[0061] Compared with the solution in the related art that lacks effective support between the supporting member 2 and the end plate 1, a limiting structure 3 is provided in the present application. The limiting structure 3 enables the supporting member 2 and the end plate 1 to fit closely through two relatively arranged limiting surfaces 31, so as to reduce the possibility of the supporting member 2 shaking relative to the end plate 1 and improve the connection stability of the supporting member 2.

[0062] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, the limiting structure 3 includes a limiting portion 32, the limiting portion 32 is connected to the supporting member 2, and the limiting surface 31 is arranged on the limiting portion 32. By setting the limiting portion 32, a groove or a protrusion can be formed on the supporting member 2 so as to set more limiting surfaces 31.

[0063] In the embodiment of the present application, the limiting portion 32 has a variety of possible structures. For example, the limiting portion 32 is a columnar structure, a block structure, a plate structure, etc., and its cross-sectional shape can be semicircular, square, elliptical, triangular, etc. Figure 4 In a possible embodiment of the present application, the limiting portion 32 is a square strip structure.

[0064] On this basis, there are many possible settings for the limiting surface 31. At least two limiting surfaces 31 are opposite surfaces of the limiting portion 32, that is, two opposite surfaces of a limiting portion 32 are respectively the limiting surfaces 31, and a group of limiting surfaces 31 can form an interference fit structure.

[0065] Alternatively, there are at least two limiting portions 32, and at least two limiting portions 32 are respectively arranged on opposite sides of the supporting member 2, and the limiting surface 31 is located on the side of the limiting portion 32 away from the supporting member 2, that is, only one limiting surface 31 is arranged on each limiting portion 32, and the limiting surfaces 31 on the two limiting portions 32 form an interference fit structure.

[0066] In the battery module provided in the embodiment of the present application, at least two limiting surfaces 31 are arranged on the opposite surfaces of the same limiting portion 32, and the structure is more compact and easy to install; at least two limiting surfaces 31 are respectively arranged on different limiting portions 32, so that the supporting member 2 is also used to provide supporting force, and the structural strength is higher.

[0067] Reference Figure 4 In some possible embodiments of the present application, at least two limiting surfaces 31 in the limiting structure 3 are parallel to each other, or at least two limiting surfaces 31 in the limiting structure 3 are arranged at an angle.

[0068] In the embodiment of the present application, at least two limiting surfaces 31 are parallel to or set at an angle to each other. The two limiting surfaces 31 in the same group may be parallel to or set at an angle to each other, or the limiting surfaces 31 in different groups may be parallel to or set at an angle to each other.

[0069] In the embodiment of the present application, the two limiting surfaces 31 may be arranged at an angle of acute angle, right angle or obtuse angle. In order to facilitate the assembly of the bearing member 2 and the end plate 1, for example, the two limiting surfaces 31 in the same group are parallel to each other, the limiting surfaces 31 in different groups are arranged on adjacent sides of the bearing member 2, and the limiting surfaces 31 in different groups are arranged at an angle to provide more directions of limitation.

[0070] The battery module provided in the embodiment of the present application has at least two limiting surfaces 31 arranged parallel to each other, and has a relatively simple structure, which is convenient for the assembly of the support member 2 and the end plate 1; when at least two limiting surfaces 31 are arranged at an angle, support in more directions can be provided to further reduce the possibility of relative shaking between the support member 2 and the end plate 1.

[0071] Reference Figure 6In some possible embodiments of the present application, the limiting structure 3 includes a plurality of limiting portions 32, and the plurality of limiting portions 32 are arranged at intervals along the first direction x.

[0072] In the embodiment of the present application, the spaced arrangement means that there is a gap between two limiting portions 32, and the multiple limiting portions 32 are spaced apart along the first direction x. Specifically, the multiple limiting portions 32 are arranged in sequence along the first direction x, and there is a gap between adjacent limiting portions 32. The gaps between the multiple adjacent limiting portions 32 may be the same or different.

[0073] For example, two limiting portions 32 are provided on one side of the supporting member 2 along the first direction x, and the two limiting portions 32 are respectively provided close to the two side edges of the supporting member 2, and the two side surfaces of the limiting portions 32 along the second direction y are both limiting surfaces 31. In this way, the distance between the two supporting members 2 is longer, which can provide more stable support and limitation.

[0074] The battery module provided in the embodiment of the present application is provided with a plurality of spaced apart limiting portions 32, so that the limiting structure 3 can provide effective limiting for the supporting member 2 and the end plate 1 while reducing the size of the limiting structure 3 and saving materials, so as to reduce the possibility of the supporting member 2 shaking relative to the end plate 1.

[0075] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, the end plate 1 is provided with a limiting groove 33 corresponding to the limiting portion 32, and the limiting portion 32 is connected in the limiting groove 33 along the first direction x.

[0076] In the embodiment of the present application, the cross-section of the limiting groove 33 may have a variety of possible shapes, and its cross-section shape may be semicircular, square, elliptical, triangular, etc. It is understandable that the cross-section shape of the limiting groove 33 should be compatible with the cross-section shape of the limiting portion 32, and the limiting portion 32 can be interference-fitted with the corresponding limiting groove 33 to achieve the limiting of the bearing member 2 and the end plate 1.

[0077] Reference Figure 3 , Figure 4 and Figure 5 In a possible embodiment of the present application, the cross-sections of the limiting groove 33 and the limiting portion 32 are both square, the limiting portion 32 can enter and exit the corresponding limiting groove 33 along the first direction x, and the radial dimension of the limiting portion 32 is slightly larger than the radial dimension of the limiting groove 33 within the tolerance range, and when the limiting portion 32 is connected to the corresponding limiting groove 33, the outer surface of the limiting portion 32 and the inner surface of the limiting groove 33 are interference fit.

[0078] In the embodiment of the present application, the size of the limiting portion 32 is affected by the structural strength and the size of the limiting groove 33. When the size of the limiting portion 32 along the second direction y is larger, that is, the distance between the two limiting surfaces 31 is larger, the structural strength is better, but the size of the corresponding limiting groove 33 will increase, and the structural strength of the end plate 1 will be adversely affected. In order to make the limiting portion 32 and the end plate 1 have good structural strength, the size of the limiting portion 32 along the second direction y can be selected in the range of 3 mm to 8 mm. For example, the size of the limiting portion 32 along the second direction y can be 3 mm, 5 mm, 8 mm, etc.

[0079] It should be noted that the setting of this size is also related to the size of the carrier 2. When the size of the carrier 2 is small, the size of the limiting portion 32 along the second direction y may also be less than 3 mm. When the size of the carrier 2 is large, the size of the limiting portion 32 along the second direction y may also be greater than 8 mm.

[0080] The battery module provided in the embodiment of the present application is provided with a limiting groove 33 so that the limiting portion 32 can be accommodated in the limiting groove 33, which makes it easier for the limiting structure 3 to cooperate and limit.

[0081] Reference Figure 4 In some possible embodiments of the present application, the end plate 1 further includes a shielding portion 12 , which blocks an end of the limiting groove 33 away from the limiting portion 32 .

[0082] In an embodiment of the present application, the shielding portion 12 can be formed by the end plate 1, that is, the end of the limiting groove 33 away from the limiting portion 32 along the first direction x does not penetrate the end plate 1, thereby shielding the end of the limiting groove 33. Alternatively, the shielding portion 12 is a component that can be disassembled relative to the main part of the end plate 1, such as a dust plug.

[0083] In the battery module provided in the embodiment of the present application, since the end plate 1 is provided with a blocking portion 12 to block the end of the limiting groove 33, on the one hand, it can provide positioning for the limiting portion 32, and on the other hand, it can improve the sealing of the battery module.

[0084] Reference Figure 4 and Figure 6 In some possible embodiments of the present application, the limiting portion 32 and / or the limiting groove 33 is provided with a guiding inclined surface 34, and the guiding inclined surface 34 is arranged at an angle with the first direction x.

[0085] In the embodiment of the present application, the angle between the guide slope 34 and the first direction x can be an acute angle or an obtuse angle. When the guide slope 34 is set on the limiting portion 32, the guide slope 34 is inclined toward the central axis of the limiting portion 32 along the direction close to the limiting groove 33; when the guide slope 34 is set on the limiting groove 33, the guide slope 34 is inclined away from the central axis of the limiting groove 33 along the direction close to the limiting portion 32.

[0086] In the embodiment of the present application, the guiding bevel 34 can be arranged on the limiting portion 32. By setting the guiding bevel 34, the size of the end of the limiting portion 32 close to the limiting groove 33 is gradually reduced, and the surface of the limiting portion 32 is conical or trapezoidal, so as to facilitate guiding the limiting portion 32 into the limiting groove 33; the guiding bevel 34 can also be arranged on the limiting groove 33, that is, the size of the limiting groove 33 close to one end of the limiting portion 32 is gradually increased, and the limiting groove 33 is a flared structure, so as to facilitate guiding the limiting portion 32 into the limiting groove 33; or, the guiding bevel 34 is respectively arranged on the limiting portion 32 and the limiting groove 33 to further improve the convenience of operation.

[0087] The battery module provided in the embodiment of the present application is provided with a guiding bevel 34 on at least one of the limiting portion 32 and the limiting groove 33. Since the guiding bevel 34 is arranged at an angle with the first direction x, when the supporting member 2 is inserted into the end plate 1, the guiding bevel 34 can guide the limiting portion 32 to quickly enter the corresponding limiting groove 33, thereby facilitating the assembly of the supporting member 2 and the end plate 1.

[0088] Reference Figure 4 and Figure 6 In some possible embodiments of the present application, at least one limiting surface 31 on the limiting portion 32 is connected to a guiding inclined surface 34 , or guiding inclined surfaces 34 are respectively provided on opposite sides of the limiting portion 32 .

[0089] In the embodiment of the present application, one or more guide slopes 34 can be set on the limiting portion 32, and multiple guide slopes 34 can be set on different sides of the limiting portion 32. It can be understood that the guide slope 34 needs to be connected to the limiting surface 31 on the corresponding side, and the two can be an acute angle transition, an obtuse angle transition or a rounded angle transition, wherein the guide slope 34 can be a plane or a curved surface, and the embodiment of the present application does not limit this.

[0090] In the battery module provided in the embodiment of the present application, the guiding slope 34 can be arranged on one side or multiple sides of the limiting portion 32. The guiding slope 34 is connected to one limiting surface 31 of the limiting portion 32. The structure is relatively simple. The guiding slopes 34 are respectively arranged on the opposite sides of the limiting portion 32, which is more conducive to guiding the assembly of the carrier 2 and the end plate 1.

[0091] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, the supporting member 2 includes a connecting portion 21 and a supporting portion 22, the connecting portion 21 is plugged into the end plate 1, the supporting portion 22 protrudes from the end plate 1, and the limiting direction of the limiting surface 31 is set at an angle to the protruding direction of the supporting portion 22.

[0092] In the embodiment of the present application, the connecting portion 21 is used to be snapped into the connecting groove 11 formed by the end plate 1. The outer contour of the connecting portion 21 should be compatible with the inner contour of the connecting groove 11. For example, the contours of both are roughly square. In order to reduce the weight of the connecting portion 21, weight-reducing holes can be set on the connecting portion 21.

[0093] In an embodiment of the present application, the bearing portion 22 can be used to carry the output pole 5. The bearing portion 22 can be a square plate-like structure. The dimension of the bearing portion 22 along the first direction x is greater than the dimension of the end plate 1 along the first direction x. Therefore, when the bearing member 2 is plugged into the end plate 1, at least part of the bearing portion 22 will be located on the outside of the end plate 1, that is, protruding from the end plate 1. This part is easily affected by gravity and the like, and thus is skewed relative to the end plate 1.

[0094] In the embodiment of the present application, the limiting direction of the limiting surface 31 refers to the normal direction of the limiting surface 31. For example, when the limiting surface 31 is a plane parallel to the first direction x, the limiting direction is perpendicular to the first direction x and perpendicular to the limiting surface 31. The protruding direction of the bearing portion 22 is the normal direction of the protruding surface of the bearing portion 22 on the end plate 1. For example, the bearing portion 22 protrudes from the end in the first direction x.

[0095] On this basis, the angle between the limiting direction of the limiting surface 31 and the protruding direction of the bearing portion 22 can be an acute angle, an obtuse angle or a right angle. It can be understood that when the limiting direction of the limiting surface 31 is perpendicular to the protruding direction of the bearing portion 22, the supporting force provided to the bearing portion 22 is the largest. Therefore, the limiting surface 31 can be set parallel to the protruding direction of the bearing portion 22.

[0096] In the battery module provided in the embodiment of the present application, the carrier 2 is inserted into the end through the connecting portion 21, and the carrier portion 22 protrudes from the end plate 1 to facilitate the connection of the output pole 5, and the limiting direction of the limiting surface 31 is set at an angle to the protruding direction of the carrier portion 22, which can effectively reduce the possibility of shaking caused by the protrusion of the carrier portion 22.

[0097] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, the carrier 2 includes a clamping portion 23, the clamping portion 23 is arranged on at least one side of the carrier 2 along the third direction z, the clamping portion 23 is clamped to the end plate 1, the limiting structure 3 is connected to the clamping portion 23, or the limiting structure 3 is arranged on the side of the carrier 2 where the clamping portion 23 is arranged; wherein the third direction z is arranged at an angle to the limiting direction of the limiting surface 31.

[0098] In the embodiment of the present application, the third direction z and the limiting direction of the limiting surface 31 may form an acute angle, a right angle, or an obtuse angle. For example, the third direction z and the limiting direction of the limiting surface 31 form a right angle. In addition, the third direction z and the second direction y may be parallel or may be set at an angle. Optionally, the third direction z, the second direction y, and the first direction x are perpendicular to each other.

[0099] In the embodiment of the present application, the clamping portion 23 can be a clamping protrusion or an elastic buckle. The clamping portion 23 can limit the carrier 2 relative to the end plate 1 along the first direction x. The clamping portion 23 can also limit the carrier 2 relative to the end plate 1 along the second direction y and / or the third direction z. The embodiment of the present application does not impose any restrictions on this.

[0100] In the battery module provided in the embodiment of the present application, a clamping portion 23 is further provided on the carrier 2, which is clamped to the end plate 1 through the clamping portion 23 to improve the connection stability between the carrier 2 and the end plate 1. The limiting structure 3 and the clamping portion 23 can be arranged on the same or different sides of the carrier 2. When arranged on the same side, the structure is more compact, and when arranged on different sides, the force on the carrier 2 is more dispersed.

[0101] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, the limiting structure 3 is disposed on a side of the carrier 2 where the clamping portion 23 is disposed, and the limiting structure 3 and the clamping portion 23 are spaced apart.

[0102] For example, the limiting structure 3 is arranged on both sides of the carrier 2 along the third direction z, and the clamping portion 23 is also arranged on both sides of the carrier 2 along the third direction z, wherein the limiting structure 3 may include a plurality of limiting portions 32, and the clamping portion 23 may also be multiple, and the multiple clamping portions 23 and the multiple limiting portions 32 may be alternately arranged along the second direction y.

[0103] In the battery module provided in the embodiment of the present application, the limiting structure 3 and the clamping portion 23 are arranged on the same side of the carrier 2, the structure is more compact, and the two are arranged at a distance, which is more convenient for the arrangement of the limiting structure 3 and makes the force of the carrier 2 more dispersed.

[0104] Reference Figure 3 , Figure 4 and Figure 5 In some possible embodiments of the present application, there are multiple limiting structures 3, and the multiple limiting structures 3 are symmetrically distributed on opposite sides of the supporting member 2.

[0105] In an embodiment of the present application, multiple limiting structures 3 can limit the supporting member 2 along different directions. For example, some limiting structures 3 limit the supporting member 2 and the end plate 1 along the third direction z, and another part of the limiting structures 3 limits the supporting member 2 and the end plate 1 along the direction perpendicular to the third direction z.

[0106] In an embodiment of the present application, multiple limiting structures 3 are symmetrically distributed on opposite sides of the supporting member 2. The multiple limiting structures 3 can be divided into two groups, and the two groups of limiting structures 3 are respectively arranged on opposite sides of the supporting member 2; or, each two of the multiple limiting structures 3 form a group, and the two limiting structures 3 in each group are respectively arranged on opposite sides of the supporting member 2.

[0107] The battery module provided in the embodiment of the present application can, by setting a plurality of limiting structures 3, on the one hand, provide more limits to further improve the connection stability between the carrier 2 and the end plate 1; on the other hand, the limiting structures 3 arranged on the opposite side of the carrier 2 make the force on the carrier 2 more balanced.

[0108] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 In a possible embodiment of the present application, limiting portions 32 are respectively provided on both sides of the support member 2 along the third direction z, and a limiting groove 33 is provided in the connecting groove 11 of the end plate 1 at a position corresponding to the limiting portion 32. The two surfaces of the limiting portion 32 along the second direction y are limiting surfaces 31, and a guiding slope 34 is provided at one end of the limiting surface 31 close to the limiting groove 33. During the process of the support member 2 being inserted into the end plate 1, the limiting portion 32 can quickly enter the limiting groove 33 under the guidance of the guiding slope 34. Since the limiting portion 32 and the limiting groove 33 are interference fit, the connection between the two is relatively tight, providing a supporting force between the support member 2 and the end plate 1 along the second direction y to limit the shaking or skewing of the support member 2 relative to the end plate 1.

[0109] Reference Fig.10 In some possible embodiments of the present application, the limiting structure 3 also includes an elastic portion 35, which is connected to one of the end plate 1 and the supporting member 2, and elastically abuts against the other of the end plate 1 and the supporting member 2 along a fourth direction, and the elastic portion 35 can be elastically deformed at least along the fourth direction; wherein the fourth direction is set at an angle to the first direction x.

[0110] In the embodiment of the present application, the elastic part 35 can be made of a material that can generate elastic deformation, such as metal, plastic, rubber, etc. Taking the solution that the elastic part 35 is connected to the bearing member 2 and abuts against the end plate 1 as an example, the end plate 1 has an abutting surface abutted by the elastic part 35. When the bearing member 2 is plugged into the end plate 1, the elastic part 35 elastically deforms away from the abutting surface in the fourth direction, so that the elastic part 35 generates an elastic force. Under the action of the elastic force, the elastic part 35 has a tendency to move toward the abutting surface, so as to closely abut on the end plate 1 along the fourth direction.

[0111] In the embodiment of the present application, the fourth direction may be at an acute angle, a right angle, or an obtuse angle with the first direction x. For example, the fourth direction is at a right angle with the first direction x. In addition, the fourth direction may be parallel to the second direction y, or the fourth direction may be parallel to the third direction z. The embodiment of the present application does not limit this, that is, the elastic portion 35 and the limiting surface 31 may limit the bearing member 2 and the end plate 1 along the same or different directions.

[0112] Reference Figure 7 , Figure 8 and Fig. 9 The battery module further includes an output pole 5 and at least one battery cell 6 , wherein the at least one battery cell 6 is disposed in the housing 4 , the output pole 5 is electrically connected to the battery cell 6 , and the output pole 5 is disposed on the carrier 2 .

[0113] In an embodiment of the present application, the shell 4 is used to accommodate battery cells 6, temperature control components, etc. At least one battery cell 6 is stacked in the shell 4, and the battery cells 6 are electrically connected in series or in parallel, and finally electrically connected to the output pole 5 of the battery module.

[0114] In the embodiment of the present application, it can 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 metal hydride battery, a nickel cadmium battery, a lead-acid battery, etc.; the battery cell 6 can be a cylindrical battery cell 6, a prismatic battery cell 6, a soft-pack battery cell 6 or a battery cell 6 of other shapes, and the prismatic battery cell 6 includes a square shell battery cell 6, a blade-shaped battery cell 6, and a polygonal prismatic battery. The polygonal prismatic battery is, for example, a hexagonal prismatic battery, etc., which is not limited in the embodiment of the present application.

[0115] It should be noted that the output pole 5 is a component for transmitting electric energy between the battery cell 6 and the conductive equipment outside the battery module. The output pole 5 does not limit the actual flow direction of the current. During the electric energy transmission process, the current can flow to the battery cell 6 or flow out of the battery cell 6.

[0116] Reference Figure 6 The embodiment of the present application also provides an output pole assembly, which includes a carrier 2 and a limiting structure 3, wherein the carrier 2 is plugged into the end plate 1 of the battery module along a first direction x; the limiting structure 3 is arranged on the carrier 2, and the limiting structure 3 includes at least two limiting surfaces 31 arranged opposite to each other along a second direction y, and the limiting surfaces 31 are interference fit with the end plate 1; wherein the second direction y is arranged at an angle to the first direction x.

[0117] Reference Fig.11 The embodiment of the present application further provides a battery, which includes a conductive member 8 and at least one battery module of the embodiment of the present application, and the conductive member 8 is used to electrically connect the output pole 5 of at least one battery module.

[0118] In addition, the battery may also include a box body 7, which may be rectangular and used to accommodate a battery module. There may be multiple battery modules, which are stacked in the box body 7, and the output poles 5 of the battery modules are electrically connected in parallel and / or in series through a conductive member 8.

[0119] Reference Fig.12 The embodiment of the present application further provides an electrical device, which includes an electrical device 9 and a battery according to the embodiment of the present application, wherein a conductive member 8 of the battery is electrically connected to the electrical device 9.

[0120] In the embodiments of the present application, the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0121] For example, the electrical device is an electric car, the electrical appliances 9 may be a drive motor, a control component, an onboard air conditioner, an onboard entertainment system, etc. in the electric car, and the battery is arranged on the bottom side of the vehicle body.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery module, characterized in that: include: End plate; A bearing member, plugged into the end plate along a first direction; The limiting structure comprises at least two limiting surfaces arranged opposite to each other along the second direction, wherein the limiting surface is arranged on one of the bearing member and the end plate and is interference-fitted with the other of the bearing member and the end plate; Wherein, the second direction is arranged at an angle with the first direction.

2. The battery module according to claim 1, characterized in that: The limiting structure comprises a limiting portion, and the limiting portion is connected to the bearing member; Wherein, at least two of the limiting surfaces are opposite surfaces of the limiting portion; or, There are at least two limiting parts, and at least two limiting parts are respectively arranged on two opposite sides of the supporting member, and the limiting surface is located on a side of the limiting part away from the supporting member.

3. The battery module according to claim 2, characterized in that: At least two of the limiting surfaces in the limiting structure are parallel to each other, or at least two of the limiting surfaces in the limiting structure are arranged at an angle.

4. The battery module according to claim 2, characterized in that: The limiting structure includes a plurality of limiting portions, and the plurality of limiting portions are arranged at intervals along the first direction.

5. The battery module according to claim 2, characterized in that: The end plate is provided with a limiting groove corresponding to the limiting portion, and the limiting portion is connected in the limiting groove along the first direction.

6. The battery module according to claim 5, characterized in that: The end plate further comprises a shielding portion, and the shielding portion blocks an end of the limiting groove away from the limiting portion.

7. The battery module according to claim 5, characterized in that: The limiting portion and / or the limiting groove is provided with a guiding inclined surface, and the guiding inclined surface is arranged at an angle with the first direction.

8. The battery module according to claim 7, characterized in that: At least one of the limiting surfaces on the limiting portion is connected to the guiding inclined surface, or the guiding inclined surfaces are respectively arranged on two opposite sides of the limiting portion.

9. The battery module according to any one of claims 1 to 8, characterized in that: The bearing member comprises a connecting portion and a bearing portion, the connecting portion is plugged into the end plate, the bearing portion protrudes from the end plate, and the limiting direction of the limiting surface is arranged at an angle to the protruding direction of the bearing portion.

10. The battery module according to any one of claims 1 to 8, characterized in that: The carrier includes a clamping portion, the clamping portion is arranged on at least one side of the carrier along the third direction, the clamping portion is clamped to the end plate, the limiting structure is connected to the clamping portion, or the limiting structure is arranged on a side of the carrier where the clamping portion is arranged; Wherein, the third direction is arranged at an angle with the limiting direction of the limiting surface.

11. The battery module according to claim 10, characterized in that: The limiting structure is arranged on a side of the carrier where the clamping portion is arranged, and the limiting structure and the clamping portion are spaced apart.

12. The battery module according to any one of claims 1 to 8, characterized in that: There are multiple limiting structures, and the multiple limiting structures are symmetrically distributed on two opposite sides of the bearing component.

13. The battery module according to any one of claims 1 to 8, characterized in that: The limiting structure further includes an elastic portion, the elastic portion is connected to one of the end plate and the bearing member, and elastically abuts against the other of the end plate and the bearing member along a fourth direction, and the elastic portion can be elastically deformed at least along the fourth direction; Wherein, the fourth direction is arranged at an angle with the first direction.

14. An output pole component, characterized in that: include: A carrier, used for being plugged into an end plate of a battery module along a first direction; A limiting structure, arranged on the bearing member, the limiting structure comprising at least two limiting surfaces arranged opposite to each other along the second direction, the limiting surfaces being used for interference fit with the end plate; Wherein, the second direction is arranged at an angle with the first direction.

15. A battery, characterized in that: include: At least one battery module according to any one of claims 1 to 13, comprising an output pole, wherein the output pole is arranged on the carrier; A conductive member is used to electrically connect the output pole of at least one of the battery modules.

16. An electrical equipment, characterized in that: include: An electrical appliance and a battery as claimed in claim 15, wherein the conductive member of the battery is electrically connected to the electrical appliance.

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