CN219779100U - End plate assembly, battery module, battery and power utilization device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to an end plate assembly, a battery module, a battery and an electric device. The end plate assembly comprises an output electrode base and an end plate, and the output electrode base comprises an elastic connecting part; the end plate is provided with a clamping groove along a first direction, and the elastic connecting part is in interference fit in the clamping groove and is limited along the first direction, a second direction and a third direction; the clamping groove is larger than the end plate in the second direction in size along the first direction. According to the end plate assembly, the elastic connecting part is arranged on the output electrode base, the clamping groove is formed in the end plate along the first direction, and the elastic connecting part is in interference fit with the clamping groove, so that the clamping groove is larger in size in the first direction, the contact area between the elastic connecting part and the clamping groove is increased, the friction force on the elastic connecting part is enhanced, and the falling probability of the output electrode base from the end plate is reduced.

Description

End plate assembly, battery module, battery and power utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to an end plate assembly, a battery module, a battery and an electric device.

Background

This section provides merely background information related to the present disclosure and is not necessarily prior art.

The end plate assembly typically includes an end plate for compressing the plurality of battery cells and an output plate mount mounted to the end plate for connecting the output plate tabs and providing insulation protection for the output plate tabs.

When the output pole base in the prior art is fixed on the end plate, a groove is usually formed in the thickness direction of the end plate, and a part of the output pole base is inserted into the groove to realize the installation of the output pole base, however, the output pole base is easy to fall off from the end plate.

Disclosure of Invention

In view of the above problems, the utility model provides an end plate assembly, a battery module, a battery and an electric device, which solve the problem that the end plate assembly in the prior art easily causes the output electrode base to drop from the end plate.

The first aspect of the present utility model provides an end plate assembly fixed on a battery module, the end plate assembly including an output electrode base and an end plate, the output electrode base including an elastic connection portion; the end plate is provided with a clamping groove which extends from the end surface of the end plate along a first direction, and the elastic connecting part is in interference fit in the clamping groove and is limited along the first direction, a second direction and a third direction;

the first direction, the second direction and the third direction are intersected in pairs, and the first direction is the height direction of the end plate.

According to the end plate assembly, the elastic connecting part is arranged on the output electrode base, the clamping groove is formed in the end plate along the first direction, and the elastic connecting part is in interference fit with the clamping groove, so that the clamping groove is larger in size in the first direction, the contact area between the elastic connecting part and the clamping groove is increased, the friction force on the elastic connecting part is enhanced, and the falling probability of the output electrode base from the end plate is reduced.

In some embodiments of the utility model, the clamping groove is cylindrical in the first direction. According to the embodiment of the utility model, the clamping groove is arranged to be cylindrical along the first direction, so that the clamping groove is convenient to process, and the elastic connecting part is easy to insert into the clamping groove.

In some embodiments of the utility model, the dimension of the clamping groove along the first direction is greater than the dimension of the end plate along the second direction; the first direction, the second direction and the third direction are perpendicular to each other. According to the embodiment of the utility model, the dimension of the clamping groove along the first direction is larger than that of the end plate along the second direction by limiting the dimension of the clamping groove along the first direction, so that the dimension of the clamping groove along the first direction is larger, the contact area of the elastic connecting part and the clamping groove is larger, the friction force on the elastic connecting part is enhanced, and the falling probability of the output electrode base from the end plate is reduced.

In some embodiments of the utility model, the elastic connection portion has a truncated cone-shaped structure or a cylindrical structure, and both the truncated cone-shaped structure and the cylindrical structure extend along the first direction. According to the embodiment of the utility model, the elastic connecting parts are configured to extend in the circular truncated cone-shaped structure or the cylindrical structure along the first direction, so that the elastic connecting parts are convenient to process and are easy to cooperate with the clamping grooves, and the elastic connecting parts are convenient to assemble into the clamping grooves.

In some embodiments of the utility model, the small rounded ends of the frustoconical structures are disposed toward the end plates. According to the embodiment of the utility model, the small round end of the round table-shaped structure is arranged towards the direction of the end plate, so that the elastic connecting part can be conveniently assembled into the clamping groove.

In some embodiments of the utility model, the surface of the frustoconical or cylindrical structure is provided with grooves, the grooves being spaced apart along the axial direction of the frustoconical or cylindrical structure. According to the embodiment of the utility model, the grooves are formed in the surface of the circular truncated cone-shaped structure or the cylindrical structure and are arranged at intervals along the axial direction of the circular truncated cone-shaped structure or the cylindrical structure, so that the friction force between the elastic connecting part and the clamping groove can be increased, and the elastic connecting part is not easy to fall off from the clamping groove.

In some embodiments of the present utility model, a protrusion is formed between two adjacent grooves, and a cross section of the protrusion along the first direction is isosceles trapezoid or rectangle. According to the embodiment of the utility model, the protrusions are formed between two adjacent grooves, and the cross section of each protrusion along the first direction is isosceles trapezoid or rectangle, so that the surfaces of the clamping groove and the circular truncated cone-shaped structure have a certain contact surface, the friction force on the circular truncated cone-shaped structure is enhanced, and the elastic connecting part is not easy to fall off from the clamping groove.

In some embodiments of the utility model, the hypotenuse of the isosceles trapezoid is greater than or equal to 2mm, or the side length of the rectangle along the first direction is greater than or equal to 2mm. According to the embodiment of the utility model, the inclined side of the isosceles trapezoid is limited to be larger than or equal to 2mm, or the side length of the rectangle along the first direction is limited to be larger than or equal to 2mm, so that the clamping groove has a certain contact surface with the surface of the circular truncated cone-shaped structure or the surface of the cylindrical structure, the friction force on the circular truncated cone-shaped structure or the cylindrical structure is enhanced, and the elastic connecting part is not easy to fall off from the clamping groove.

In some embodiments of the utility model, the smallest dimension of the longer base of the isosceles trapezoid is 1 to 5mm greater than the inner diameter of the snap groove, or the side length of the rectangle along the third direction is 1 to 5mm greater than the inner diameter of the snap groove. According to the embodiment of the utility model, the minimum size of the bottom edge of the isosceles trapezoid is limited to be 1-5 mm larger than the inner diameter of the clamping groove, or the side length of the rectangle along the third direction is limited to be 1-5 mm larger than the inner diameter of the clamping groove, so that the clamping groove has a certain compression amount on the elastic connecting part, the elastic connection is in interference fit in the clamping groove, and the friction force of the clamping groove on the elastic connecting part is increased.

In some embodiments of the present utility model, the elastic connection portion has a dimension H1 along the first direction, and the clamping groove has a dimension H2 along the first direction; h1 is greater than or equal to h2×0.5. According to the embodiment of the utility model, the dimension of the elastic connecting part along the first direction is defined as H1, and the dimension of the H1 along the first direction is greater than or equal to 0.5 times of the dimension of the clamping groove along the first direction, so that the friction surface between the elastic connecting part and the clamping groove can be increased, and the friction force of the clamping groove on the elastic connecting part is enhanced.

In some embodiments of the utility model, the elastic connection is an ethylene propylene diene monomer rubber. According to the embodiment of the utility model, the elastic connecting part is arranged as the ethylene propylene diene monomer rubber piece, so that the elasticity of the ethylene propylene diene monomer rubber can be fully utilized, the elastic connecting part is easier to insert into the clamping groove, and the elastic connecting part is not easy to fall off from the clamping groove.

A second aspect of the present utility model proposes a battery module including the end plate assembly mentioned in the above embodiments.

A third aspect of the present utility model provides a battery, including a housing and a battery module disposed in the housing.

A fourth aspect of the present utility model provides an electricity consumption device comprising an electricity consumption body and a battery for supplying electricity to the electricity consumption body.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the utility model;

FIG. 2 is a schematic illustration of the structure of an endplate assembly according to some embodiments of the utility model;

FIG. 3 is a schematic view of the end plate assembly shown in FIG. 2 at a second view angle;

FIG. 4 is a schematic cross-sectional view of A-A shown in FIG. 3;

FIG. 5 is a schematic view of the structure of the output pole mount shown in FIG. 2 (with a low voltage connector);

fig. 6 is another structural schematic diagram of the output pole mount shown in fig. 2 (including a low voltage connector).

The reference numerals are as follows:

1. a vehicle; 2. a battery; 3. a controller; 4. a motor;

100. an end plate assembly;

10. an output electrode base; 11. an elastic connection part; 112. a groove; 113. a protrusion; 1131. a beveled edge; 114. a notch; 12. a mounting frame;

20. an end plate; 21. a clamping groove;

30. a low voltage connector;

200. a circuit board;

300. and an output electrode connecting sheet.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Currently, the more widely the battery is used in view of the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the battery application field, the market demand thereof is also continuously expanding.

The battery according to the embodiment of the utility model can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the use of the battery. A power supply system including the battery cell, the battery, and the like according to the present utility model, which constitute the power utilization device, may be used.

The battery typically includes an end plate assembly that includes an output pole base and an end plate. The mode of connection between output pole base and the end plate sets up the joint groove at the thickness direction of end plate, sets up elastic fixation portion on output pole base, with elastic fixation portion interference fit in the joint inslot, however, because the end plate is less in the size of thickness direction, the condition that elastic connection portion drops from the joint inslot appears easily.

In order to solve the above-mentioned problems, the applicant proposes a technical solution of the present utility model, in which the clamping groove is disposed along the height direction of the end plate from the end surface of the end plate, so that the dimension of the clamping groove along the height direction of the end plate can be increased, thereby increasing the contact area between the elastic connection portion and the clamping groove, increasing the friction force to the elastic connection portion, and reducing the probability of falling off of the elastic connection portion.

The electric equipment using the battery as the power supply in the embodiment of the utility model can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

It should be understood that the technical solution described in the embodiments of the present utility model is not limited to the above-described battery and electric device, but may be applied to all batteries including a case and electric devices using the battery.

Taking the vehicle as an example, the vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or an extended range vehicle. The interior of the vehicle is provided with a battery, which may be provided at the bottom or at the head or at the tail of the vehicle. The battery may be used for power supply of the vehicle, for example, the battery may be used as an operating power source of the vehicle. The vehicle may also include a controller and a motor, the controller being configured to control the battery to power the motor, for example, for operating power requirements during start-up, navigation, and travel of the vehicle.

The battery can be used as an operating power supply of the vehicle and also can be used as a driving power supply of the vehicle to supply driving power for the vehicle instead of or in part of fuel oil or natural gas.

Fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present utility model. As shown in fig. 1, the interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the utility model, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

An embodiment of the present utility model proposes an end plate assembly 100 fixed to a battery module, as shown in fig. 1, the end plate assembly 100 including an output electrode base 10 and an end plate 20, the output electrode base 10 including an elastic connection part 11; the end plate 20 is provided with a clamping groove 21, the clamping groove 21 extends from the end surface of the end plate 20 along a first direction, and the elastic connecting part 11 is in interference fit in the clamping groove 21 and is limited along the first direction, a second direction and a third direction; the first direction, the second direction and the third direction intersect each other, and the first direction is the height direction of the end plate 20.

The first direction here is the X-X direction, i.e. the height direction of the end plate 20, the second direction here is the Y-Y direction, i.e. the thickness direction of the end plate 20, and the third direction here is the Z-Z direction, i.e. the length direction of the end plate 20.

The output terminal mount 10 is generally disposed on the end plate 20 of the battery module to fix the output terminal connection tab 300 and provide insulation protection for the output terminal connection tab 300. The end plate 20 herein refers to a portion of the frame structure of the battery module, which is located at the end of the arrangement direction of the plurality of battery cells, for restricting the movement of the battery cells in the thickness direction of the end plate 20, which is the second direction.

The term "two-by-two intersection" as used herein refers to a condition that any two of the first direction, the second direction and the third direction have a certain included angle, for example, the included angle is 85 degrees or 90 degrees, where two-by-two intersection is perpendicular.

According to the end plate assembly 100 disclosed by the utility model, the elastic connecting part 11 is arranged on the output electrode base 10, the groove 21 is clamped on the end plate 20, the clamping groove 21 extends from the end surface of the end plate 20 along the first direction, and the elastic connecting part 11 is in interference fit in the clamping groove 21, so that the clamping groove 21 is large in size along the first direction, the contact area between the elastic connecting part 11 and the clamping groove 21 is increased, the friction force on the elastic connecting part 11 is enhanced, and the probability that the output electrode base 10 falls off from the end plate 20 is reduced.

In general, the dimension of the end plate 20 in the thickness direction is the smallest, and the dimension in the height direction is larger than the dimension of the end plate 20 in the thickness direction, so that the contact area between the clamping groove 21 and the elastic connection portion 11 in the present utility model is larger, thereby reducing the probability of falling off of the elastic connection portion 11.

In some embodiments of the present utility model, as shown in fig. 4, the clamping groove 21 is cylindrical in the first direction. The locking groove 21 may be a blind groove or a through groove, and is mainly used for inserting the elastic connection portion 11 into the locking groove 21 to fix the elastic connection portion 11. In addition, in the embodiment of the present utility model, by providing the clamping groove 21 in the cylindrical shape along the first direction, the clamping groove 21 is conveniently processed, and the elastic connection portion 11 is easily inserted into the clamping groove 21.

In some embodiments of the present utility model, the dimensions of the clamping groove 21 along the first direction are greater than the dimensions of the end plate 20 along the second direction; the first direction, the second direction and the third direction are perpendicular to each other. That is, the depth of the clamping groove 21 is greater than the dimension of the end plate 20 along the second direction, so that a larger area can be provided between the elastic connection portion 11 and the clamping groove 21, and the friction force to the elastic connection portion 11 is increased.

According to the embodiment of the utility model, the dimension of the clamping groove 21 along the first direction is larger than the dimension of the end plate 20 along the second direction by limiting the dimension of the clamping groove 21 along the first direction, so that the contact area between the elastic connecting part 11 and the clamping groove 21 is larger, the friction force to the elastic connecting part 11 is enhanced, and the falling probability of the output electrode base 10 from the end plate 20 is reduced.

In some embodiments of the present utility model, the elastic connection portion 11 has a truncated cone-shaped structure or a cylindrical structure, and both the truncated cone-shaped structure and the cylindrical structure extend along the first direction. The elastic connection part 11 may have a cylindrical structure or a truncated cone structure, and all or part of the side surface is placed in the clamping groove 21, so that the contact area with the clamping groove 21 may be increased. In addition, the embodiment of the present utility model facilitates the processing of the elastic connection portion 11 by configuring the elastic connection portion 11 to each extend in the first direction in a circular truncated cone-shaped structure or a cylindrical structure, and facilitates the fitting of the elastic connection portion 11 into the clamping groove 21 by being easily engaged with the clamping groove 21.

It will be appreciated that, for ease of insertion of the frustoconical structure into the clamping groove 21, the small rounded ends of the frustoconical structure are disposed toward the end plate 20. That is, in the embodiment of the present utility model, the small round end of the truncated cone-shaped structure is disposed toward the end plate 20, so that the elastic connection portion 11 can be conveniently assembled into the clamping groove 21.

In some embodiments of the present utility model, as shown in fig. 4, 5 and 6, the surface of the truncated cone-shaped structure or the cylindrical structure is provided with grooves 112, and the grooves 112 are spaced apart along the axial direction of the truncated cone-shaped structure or the cylindrical structure. The surface referred to herein mainly refers to the side of the truncated cone-shaped structure or the cylindrical structure, and is the portion that contacts the catching groove 21. The grooves 112 may be annular or spiral.

According to the embodiment of the utility model, the grooves 112 are formed in the surface of the truncated cone-shaped structure or the cylindrical structure, and the grooves 112 are formed at intervals along the axial direction of the truncated cone-shaped structure or the cylindrical structure, so that the friction force between the elastic connecting part 11 and the clamping groove 21 can be increased, and the elastic connecting part 11 is not easy to fall off from the clamping groove 21.

In some embodiments of the present utility model, as shown in fig. 4, 5 and 6, a protrusion 113 is formed between two adjacent grooves 112, and a cross section of the protrusion 113 along the first direction is isosceles trapezoid or rectangle. Wherein, when the elastic connection portion 11 is of a truncated cone-shaped structure, the cross section of the protrusion 113 along the first direction is an isosceles trapezoid, and when the elastic connection portion 11 is of a cylindrical structure, the cross section of the protrusion 113 along the first direction is a rectangle.

According to the embodiment of the utility model, the protrusions 113 are formed between two adjacent grooves 112, and the cross section of each protrusion 113 along the first direction is isosceles trapezoid or rectangle, so that the surfaces of the clamping groove 21 and the circular truncated cone-shaped structure have a certain contact surface, the friction force on the circular truncated cone-shaped structure is enhanced, and the elastic connecting part 11 is not easy to fall off from the clamping groove 21.

In some embodiments of the present utility model, as shown in fig. 4, the dimension H of the hypotenuse 1131 of the isosceles trapezoid is greater than or equal to 2mm, or the side length of the rectangle along the first direction is greater than or equal to 2mm.

According to the embodiment of the utility model, the dimension H of the bevel edge 1131 of the isosceles trapezoid is larger than or equal to 2mm, or the side length of the rectangle along the first direction is larger than or equal to 2mm, so that the clamping groove 21 and the surface of the truncated cone-shaped structure or the surface of the cylindrical structure have a certain contact surface, the friction force on the truncated cone-shaped structure or the cylindrical structure is enhanced, and the elastic connecting part 11 is not easy to fall off from the clamping groove 21.

In some embodiments of the utility model, the smallest dimension L of the longer base of the isosceles trapezoid is 1 to 5mm, such as 3mm or 4mm, greater than the inner diameter D of the clamping groove 21, and the side length of the rectangle in the third direction is 1 to 5mm, such as 3mm or 4mm, greater than the inner diameter of the clamping groove 21.

According to the embodiment of the utility model, the minimum size of the longer bottom edge of the isosceles trapezoid is limited to be 1-5 mm larger than the inner diameter of the clamping groove 21, or the side length of the rectangle along the third direction is 1-5 mm larger than the inner diameter of the clamping groove 21, so that the clamping groove 21 has a certain compression amount on the elastic connecting part 11, the elastic connecting part 11 is in interference fit in the clamping groove 21, and the friction force of the clamping groove 21 on the elastic connecting part 11 is increased.

The longer base of the isosceles trapezoid referred to herein is the upper base of the isosceles trapezoid.

In some embodiments of the present utility model, as shown in fig. 4, the dimension of the elastic connection portion 11 along the first direction is H1, and the dimension of the clamping groove 21 along the first direction is H2; h1 is greater than or equal to h2×0.5.

In the embodiment of the utility model, by limiting the dimension of the elastic connection portion 11 along the first direction to be H1, where H1 is greater than or equal to 0.5 times the dimension of the clamping groove 21 along the first direction to be H2, the friction surface between the elastic connection portion 11 and the clamping groove 21 can be increased, and the friction force of the clamping groove 21 to the elastic connection portion 11 can be enhanced. The dimension H1 of the elastic connection portion 11 along the first direction may be the same as the dimension H2 of the clamping groove 21 along the first direction, so that the elastic connection portion 11 and the clamping groove 21 have the largest contact area, the clamping groove 21 can form a pressing force on the elastic connection portion 11, a friction force on the elastic connection portion 11 along the first direction is formed, and the probability of falling off of the elastic connection portion 11 is reduced.

In some embodiments of the utility model, the elastic connection 11 is an ethylene propylene diene monomer rubber. According to the embodiment of the utility model, the elastic connecting part 11 is arranged as the ethylene propylene diene monomer rubber piece, so that the elasticity of the ethylene propylene diene monomer rubber can be fully utilized, the elastic connecting part 11 is easier to insert into the clamping groove 21, and the elastic connecting part 11 is not easy to fall off from the clamping groove 21.

It will be appreciated that other elastic components may be used for the elastic connection 11, and this is not illustrated here.

Alternatively, as shown in fig. 5 and 6, the elastic connection portion 11 is provided with the slits 114, the number of the slits 114 is one or more, and when the number of the slits 114 is one, the slits 114 are directly formed on the elastic connection portion 11 and extend in the axial direction of the elastic connection portion 11. When the number of the slits 114 is two or more, the slits 114 are arranged at intervals along the circumferential direction of the elastic connection portion 11. The purpose of providing the notch 114 here is to facilitate the insertion of the elastic connection portion 11 into the clamping groove 21, reducing the difficulty of assembly. Of course, the notch 114 may not be provided in order to increase the friction force between the elastic connection portion 11 and the engagement groove 21.

Optionally, the number of the elastic connection parts 11 is one or more, and correspondingly, the same number of the clamping grooves 21 are arranged on the end plate 20, so that the extrusion force on the elastic connection parts 11 can be improved, and the probability that the elastic connection parts 11 fall off from the clamping grooves 21 is reduced.

Optionally, as shown in fig. 5 and 6, the output electrode base 10 further includes a mounting frame 12, and the mounting frame 12 is disposed above the elastic connection portion 11 for mounting the output electrode connection piece 300. The mounting bracket 12 here is a component for mounting the output terminal connection piece 300.

According to the end plate assembly in the embodiment of the utility model, the output electrode base 10 can be conveniently installed on the end plate 20, the clamping groove 21 can be processed in an extrusion process, and a numerical control machine tool is not required to be adopted for processing the end plate 20, so that the processing process of the end plate 20 is simplified.

A second aspect of the present utility model proposes a battery module including the end plate assembly 100 mentioned in the above embodiment. The battery module further includes a circuit board 200 and a low voltage connector 30, which are common components in battery modules and will not be described herein.

A third aspect of the present utility model provides a battery, including a case (not shown) and a battery module, wherein the battery module is disposed in the case.

A fourth aspect of the present utility model provides an electricity consumption device comprising an electricity consumption body and a battery for supplying electricity to the electricity consumption body.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. An end plate assembly fixed to a battery module, the end plate assembly comprising:

the output electrode base comprises an elastic connecting part; and

the end plate is provided with a clamping groove, and the clamping groove extends from the end face of the end plate along a first direction;

the elastic connecting part is in interference fit in the clamping groove and is limited along the first direction, the second direction and the third direction;

the first direction, the second direction and the third direction are intersected in pairs, and the first direction is the height direction of the end plate.

2. The endplate assembly of claim 1 wherein said clamping groove is cylindrical in said first direction.

3. The endplate assembly of claim 1 wherein a dimension of the snap groove along the first direction is greater than a dimension of the endplate along the second direction;

the first direction, the second direction and the third direction are perpendicular to each other.

4. The endplate assembly of claim 1 wherein the resilient connection is a frustoconical or cylindrical structure and both the frustoconical and the cylindrical structure extend in the first direction.

5. The endplate assembly of claim 4 wherein the rounded small end of the frustoconical structure is disposed toward the endplate.

6. An end plate assembly according to claim 4 or 5, wherein the surface of the frustoconical or cylindrical structure is provided with grooves spaced axially along the frustoconical or cylindrical structure.

7. The endplate assembly of claim 6, wherein a projection is formed between two adjacent grooves, the projection having an isosceles trapezoid or rectangle in cross-section along the first direction.

8. The endplate assembly of claim 7, wherein the hypotenuse of the isosceles trapezoid is greater than or equal to 2mm, or the side length of the rectangle along the first direction is greater than or equal to 2mm.

9. The endplate assembly of claim 7, wherein the smallest dimension of the longer base of the isosceles trapezoid is 1 to 5mm greater than the inner diameter of the clamping groove, or the rectangular shape has a side length along the third direction that is 1 to 5mm greater than the inner diameter of the clamping groove.

10. The endplate assembly of claim 1 wherein the resilient connection has a dimension H1 along the first direction and the snap groove has a dimension H2 along the first direction;

h1 is greater than or equal to h2×0.5.

11. The endplate assembly of claim 1 wherein said resilient connection is an ethylene propylene diene monomer rubber member.

12. A battery module comprising the end plate assembly of any one of claims 1-11.

13. A battery, comprising:

a housing; and

the battery module of claim 12, disposed within the housing.

14. An electrical device, comprising:

an electricity consumption main body;

and a battery as claimed in claim 13 for powering the power consuming body.