CN213026355U - Battery end cover and battery pack with same - Google Patents

Abstract

The utility model discloses a battery end cover and have its battery package, wherein, battery end cover includes: lid and stiffening rib. The two opposite sides of the cover body are inwards bent to form a first protection portion and a second protection portion, the first protection portion and the second protection portion are arranged in an axisymmetric mode by using the center line of the cover body, an accommodating cavity is formed among the first protection portion, the second protection portion and the cover body, the reinforcing rib extends perpendicular to the surface of the cover body, the reinforcing rib is arranged in the accommodating cavity, one end of the reinforcing rib is connected with the cover body, and the end face, far away from one side of the cover body, of the reinforcing rib is flush with the end faces of the first protection portion and the second protection portion. The utility model discloses battery end cover forms through interconnect between first protection portion, second protection portion and the lid and holds the chamber, holds the chamber and is used for holding electric core group, plays the effect of protection electric core group, and the stiffening rib still can reduce the area of contact between battery end cover and the electric core group when increasing battery end cover structural strength, makes the produced heat of electric core group in time effluvium.

Description

Battery end cover and battery pack with same

Technical Field

The utility model belongs to the technical field of the battery production, specifically a battery end cover and have its battery package.

Background

The power battery becomes the first choice of the power element of the electric automobile due to the advantages of high energy density, long cycle life, environmental protection and the like. Particularly, the soft package battery has the advantages of good safety performance, light weight, flexible design and the like, and the taste of the power battery manufacturers is obtained.

Among the prior art, in order to prolong laminate polymer battery's life, improve the security of battery, often set up the battery end cover at laminate polymer battery's tip to play the effect of protection laminate polymer battery, avoid laminate polymer battery impaired and influence its normal use.

But current battery end cover often is that the direct lid is established at laminate polymer battery's both ends, leads to the area of contact between battery end cover and the laminate polymer battery great for laminate polymer battery produced heat can not scatter fast, in time in the course of the work, and then has reduced laminate polymer battery's life.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery end cover, battery end cover structural strength is high and heat dispersion is good, has solved among the prior art technical problem that battery end cover structural strength is low, the radiating effect is poor.

The utility model discloses still aim at providing a battery package that has above-mentioned battery end cover.

According to the utility model discloses battery end cover, include: the two opposite sides of the cover body are bent outwards in an inclined mode to form a first protection part and a second protection part, and the first protection part and the second protection part are arranged in an axisymmetric mode by the center line of the cover body; an accommodating cavity is formed among the first protection part, the second protection part and the cover body; the reinforcing rib extends perpendicular to the surface of the cover body, the reinforcing rib is arranged in the accommodating cavity, one end of the reinforcing rib is connected with the cover body, and the end face of one side, away from the cover body, of the reinforcing rib is flush with the end faces of the first protection portion and the second protection portion.

According to the utility model discloses battery end cover, through setting up the first protection portion and the second protection portion of inwards buckling, can make battery end cover have higher scratch resistance performance, and reduce battery end cover's area occupation, improve battery end cover's practicality, the stiffening rib is laid on the lid surface, the stiffening rib is used for strengthening battery end cover's structural strength, connect battery end cover on electric core group, battery end cover is used for protecting electric core group, improve electric core group's security, and the stiffening rib still is used for reducing the area of contact between battery end cover and the electric core group, improve battery end cover's heat dispersion. The battery end cover of this application, structural strength is high, heat dispersion is good and occupy smallly.

According to the utility model discloses a battery end cover, first protection portion with second protection portion follows the lid edge orientation the direction of holding outside the chamber is level and smooth arc and extends, the tip of first protection portion with the tip of second protection portion all is keeping away from each other the straight extension in the direction and is forming straight section, the place face of straight section with the place face parallel and level of stiffening rib.

Optionally, the battery end cover still includes third protection portion and fourth protection portion, the third protection portion with the both ends of fourth protection portion are all connected first protection portion with the second protection portion, the third protection portion is connected the upper portion of lid, the fourth protection portion is connected the lower part of lid, first protection portion the second protection portion the third protection portion the fourth protection portion with enclose between the lid and become hold the chamber, it keeps away from to hold the chamber one side of lid is opened.

Optionally, in a direction from the surface of the cover body to the surface of the straight section, the size of the longitudinal cross-sectional profile of the cell end cap parallel to the cover body gradually increases.

Optionally, the end surface of the third protecting part is not lower than the surface where the straight section is located, and the end surface of the fourth protecting part is not lower than the surface where the straight section is located; when the terminal surface of third protection portion with the terminal surface of fourth protection portion all is higher than when straight section is located, just the terminal surface of third protection portion with the terminal surface parallel and level of fourth protection portion, third protection portion respectively with straight section forms first ka tai, fourth protection portion respectively with straight section forms the second ka tai.

Optionally, a plurality of heat dissipation holes are formed in the cover body and communicated with the accommodating cavity.

Optionally, a plurality of mounting holes are symmetrically formed in the cover body, and clamping jaws are arranged in the mounting holes outwards in the direction away from the accommodating cavity.

Optionally, the battery end cap further comprises a support rib, the support rib is arranged to intersect with the reinforcing rib, and two ends of the support rib are respectively connected to the first protection portion and the second protection portion.

Optionally, the reinforcing rib includes a plurality of reinforcing ribs, the plurality of reinforcing ribs are arranged in parallel, each reinforcing rib extends along the upper end and the lower end of the cover body, and the end face of the support rib is not higher than the end face of the reinforcing rib.

According to the utility model discloses battery package, include: the battery pack comprises at least one battery cell; the two battery end covers are the battery end covers, the two battery end covers are respectively connected to two opposite ends of the electric core group, and at least part of the electric core group is arranged in the accommodating cavity.

According to the utility model discloses battery pack, through connecting the relative both ends at electric core group respectively with aforementioned battery end cover, battery end cover is used for protecting electric core group's safety, and at the in-process of electric core group work, and battery end cover can effectively distribute away the heat that electric core group produced fast, effectively prolongs electric core group's life. The battery pack has the advantages of good heat dissipation effect and long service life.

Additional aspects and advantages of the invention will be set forth in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a battery end cap according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a battery end cap at another angle according to an embodiment of the present invention.

Reference numerals:

100. a battery end cap;

1. a cover body;

2. heat dissipation holes;

21. a first heat dissipation hole; 22. a second heat dissipation hole; 23. a third heat dissipation hole;

3a, a first protection part; 31. a first straight section;

3b, a second protection part; 32. a second straight section;

3c, a third protection part;

3d, a fourth protection part;

4. reinforcing ribs;

5. a first chuck table;

6. a second chuck table;

7. mounting holes; 71. a claw;

8. and a support rib.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The battery end cap 100 of the embodiments of the present invention is described below with reference to the accompanying drawings.

According to the utility model discloses a battery end cover 100, as shown in fig. 1, include: a cover body 1 and reinforcing ribs 4.

As shown in fig. 1, opposite sides of the cover 1 are bent obliquely outward to form a first protection portion 3a and a second protection portion 3b, the first protection portion 3a and the second protection portion 3b are arranged in axial symmetry with a center line of the cover 1, and a receiving cavity is formed between the first protection portion 3a, the second protection portion 3b and the cover 1.

The reinforcing rib 4 extends perpendicularly to the surface of the cover body 1, the reinforcing rib 4 is arranged in the accommodating cavity, one end of the reinforcing rib 4 is connected with the cover body 1, and the end face of one side of the reinforcing rib 4, which is far away from the cover body 1, is flush with the end faces of the first protection part 3a and the second protection part 3 b.

According to the structure, the accommodating cavity of the battery end cover 100 provided by the embodiment of the invention is used for accommodating the battery cell, the battery cell is arranged in the accommodating cavity, on one hand, the accommodating cavity can play a role in protecting the battery cell, and when the battery pack is impacted, the accommodating cavity collapses and absorbs energy, and partial impact force is absorbed by using the strength and rigidity of the accommodating cavity, so that the damage of the impact force to the battery cell is reduced; on the other hand, hold the chamber and provide installation space for electric core to the biggest shift position of electric core has been restricted, and other positions that the electric core group dislocation moved to car aircraft bonnet when preventing that battery end cover 100 from receiving the striking improve the electric core group and hold the stability of intracavity.

The reinforcing ribs 4 are arranged in the accommodating cavities, and the reinforcing ribs 4 are used for reinforcing the structural strength of the battery end cover 100 and ensuring that the battery end cover 100 cannot be extruded and deformed after being extruded by external force. And through setting up the terminal surface with stiffening rib 4 and the terminal surface of first protection portion 3a, second protection portion 3b parallel and level, stiffening rib 4 can play the effect of restriction electric core group position, makes electric core group can not directly laminate on the internal surface of lid 1, reduces the area of contact between battery end cover 100 and the electric core group, improves the heat dispersion of battery package, and then prolongs the life of electric core group.

It can be understood that, the battery end cover 100 of the present application can effectively protect the electric core assembly, reduce the damage of the impact on the electric core assembly, prolong the service life of the electric core assembly, and increase the heat dissipation performance of the electric core assembly.

Optionally, the battery end cap 100 is made of thermoplastic plastic formed by Polycarbonate (Polycarbonate) and polypropylene fine (ABS) alloy, so that the cap body 1 has the characteristics of easy machine-shaping, high-temperature corrosion resistance and high impact strength, and the light weight of the battery end cap 100 can be realized.

In some embodiments of the present invention, the first protection portion 3a and the second protection portion 3b extend from the edge of the cover body 1 in a smooth arc shape toward the direction outside the accommodating cavity. The first protection part 3a and the second protection part 3b which are formed by bending can reduce the whole area of the battery end cover 100 and reduce the occupied space of the battery end cover 100, and the first protection part 3a and the second protection part 3b which are formed by bending inwards can enable two ends of the cover body 1 to form flaring openings, so that the range of a containing cavity enclosed among the first protection part 3a, the second protection part 3b and the cover body 1 is increased, the cover body 1 has higher scratch resistance, the service life of the battery end cover 100 is effectively prolonged, and the use cost of the battery end cover 100 is reduced; on the other hand, the outer surfaces of the first protection part 3a and the second protection part 3b are arc-shaped, so that the battery end cover 100 has high scratch resistance, and the service life of the battery end cover 100 is further prolonged.

Alternatively, the end of the first protector portion 3a and the end of the second protector portion 3b each extend straight in a direction away from each other to form a straight section, and the plane of the straight section is flush with the plane of the reinforcing rib 4.

For convenience of description, the straight section on the first protection part 3a is referred to as a first straight section 31, the straight section on the second protection part 3b is referred to as a second straight section 32, the plane where the first straight section 31 is located and the plane where the second straight section 32 is located are coplanar, the electric core group is placed in the accommodating cavity, one end of the electric core group can be abutted to the first straight section 31 and the second straight section 32 respectively to play a role in fixing the electric core group, the stability of the electric core group in the battery end cover 100 is ensured, the plane where the straight section is located and the plane where the reinforcing rib 4 is located are arranged to be flush, the plane where the reinforcing rib 4 is located can be abutted to one end of the electric core group on one hand, and the stability of the electric core group in the battery end cover 100 is further improved; on the other hand, the reinforcing ribs 4 can also reduce the contact area between the electric core group and the cover body 1, and improve the heat dissipation performance of the electric core group.

In some embodiments of the present invention, as shown in fig. 1, the battery end cover 100 further includes a third protection portion 3c and a fourth protection portion 3d, the first protection portion 3a and the second protection portion 3b are connected to both ends of the third protection portion 3c and the fourth protection portion 3d, the third protection portion 3c is connected to the upper portion of the cover 1, the fourth protection portion 3d is connected to the lower portion of the cover 1, a containing cavity is enclosed between the first protection portion 3a, the second protection portion 3b, the third protection portion 3c, the fourth protection portion 3d and the cover 1, and one side of the containing cavity far from the cover 1 is open. Conveniently lay the electric core group to for arranging of electric core group provides sufficient space, when the battery package received the striking, first protection part 3a, second protection part 3b, third protection part 3c, fourth protection part 3d and the usable intensity and the rigidity of lid 1 self absorbed partial impact, and then reduced the destruction of impact to electric core group, improve the security of electric core group in holding the intracavity.

In the description of the present invention, features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

Optionally, the first protection portion 3a, the second protection portion 3b, the third protection portion 3c, the fourth protection portion 3d and the cover body 1 form the battery end cover 100 by an integrated forming process, and the integrated forming process can ensure that the battery end cover 100 does not need to perform machining such as welding, polishing and grinding on the first protection portion 3a, the second protection portion 3b, the third protection portion 3c, the fourth protection portion 3d and the cover body 1 in an early stage in an assembling process, so that the assembling process is effectively simplified, and the assembling efficiency of the battery end cover 100 is improved.

Alternatively, the dimension of the longitudinal cross-sectional profile of the cell end cap 100 parallel to the cover body 1 increases gradually from the surface of the cover body 1 to the surface of the straight section. The gradually increasing longitudinal sectional profile dimension can completely embed the battery core pack in the battery end cover 100 and adapt to the installation of the battery core pack with a slight machining tolerance, thereby improving the adaptability of the battery end cover 100.

Alternatively, the end surface of the third protecting portion 3c is not lower than the plane of the straight section, and the end surface of the fourth protecting portion 3d is not lower than the plane of the straight section. That is to say, the terminal surface of third protection part 3c is higher than or equal to straight section place face, and the terminal surface of fourth protection part 3d is higher than or equal to straight section place face, and third protection part 3c is used for protecting the upper end of electric core group, and fourth protection part 3d is used for protecting the lower extreme of electric core group, and then realizes omnidirectional protection electric core group, improves the security of electric core group, prolongs the life of electric core group.

Optionally, when the end surface of the third protecting portion 3c and the end surface of the fourth protecting portion 3d are both higher than the plane of the straight section, and the end surfaces of the third protecting portion 3c and the fourth protecting portion 3d are flush, the third protecting portion 3c and the straight section respectively form a first locking platform 5, and the fourth protecting portion 3d and the straight section respectively form a second locking platform 6. The joint is on the upper and lower both sides face of electric core group between first calorie of platform 5 and the second calorie of platform 6, receives the exogenic action when battery end cover 100, and the electric core group of placing can not take place to rock in its battery end cover 100, improves the stability of battery package.

In some embodiments of the present invention, as shown in fig. 2, a plurality of heat dissipation holes 2 are disposed on the cover body 1, and the heat dissipation holes 2 are communicated with the accommodating cavity. On one hand, the heat dissipation holes 2 can timely dissipate heat generated by the electric core group in the working process, so that thermal runaway of the electric core group caused by heat accumulation is avoided, and the safety performance of the electric core group is improved; on the other hand, the weight of the cover body 1 is reduced, and when the cover body 1 is connected to the electric core group, the weight of the battery pack is effectively reduced.

Optionally, the interval sets up between two adjacent louvres 2, still can guarantee battery end cover 100's intensity when guaranteeing that the heat of electric core group can effectively radiate, and battery end cover 100 connects and can play the guard action to electric core group on electric core group, effectively prolongs the life of electric core group, guarantees the safe in utilization of battery package.

Optionally, the arrangement density of the plurality of heat dissipation holes 2 in the middle of the cover 1 is greater than the arrangement density of the plurality of heat dissipation holes 2 on the upper and lower sides of the cover 1, and the total flow area of the heat dissipation holes 2 arranged in the middle of the cover 1 is greater than the total flow area of the heat dissipation holes 2 arranged on the upper and lower sides of the cover 1. A plurality of louvres 2 at middle part can distribute away the heat of concentrating on 1 middle part of lid fast, realize the quick heat dissipation of electric core group to make the electric core group can quick charge-discharge, increase the charge-discharge number of times of electric core group, prolong the life of electric core group.

Optionally, as shown in fig. 2, the heat dissipation holes 2 in the middle region of the cover 1 form a group and are marked as first heat dissipation holes 21, the heat dissipation holes 2 in the two side regions of the cover 1 are two groups and are respectively marked as second heat dissipation holes 22 and third heat dissipation holes 23, the distance between two adjacent first heat dissipation holes 21 is smaller than the distance between the first heat dissipation hole 21 and the nearest second heat dissipation hole 22, and the distance between adjacent first heat dissipation holes 21 is smaller than the distance between the first heat dissipation hole 21 and the nearest third heat dissipation hole 23. The structural strength of the cover body 1 can be increased while ensuring the effective heat dissipation in the middle of the electric core group, so that the battery end cover 100 can effectively protect the electric core group and improve the safety of the electric core group.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Optionally, the cross-sectional shape of the heat dissipation hole 2 is one or more of a circular hole, an elliptical hole, a square hole and a star-shaped hole. The heat dissipation holes 2 with different cross-sectional shapes form different shapes and different sizes of flow areas, and technicians can select to arrange the heat dissipation holes 2 with different cross-sectional shapes on the cover body 1 according to the shape and the size of the electric core group and the working environment of the battery pack.

Advantageously, the cross-sectional shape of the heat dissipation hole 2 is a square hole, and the square here is a rectangle. The interval between two adjacent louvres 2 of increase that cross sectional shape is the louvre 2 of quad slit can maximize is under the prerequisite of guaranteeing 1 structural strength of lid for the heat that the electric core group produced distributes away in time, ensures that the heat can not gather in the inside of lid 1.

In some embodiments of the present invention, as shown in fig. 2, the cover body 1 is symmetrically provided with a plurality of mounting holes 7, and the plurality of mounting holes 7 are provided with claws 71 facing outward in a direction away from the accommodating cavity. Can connect battery end cover 100 on the environmental part of vehicle through jack catch 71, guarantee that the relative position relation of battery end cover 100 in the vehicle is stable, at the in-process that the car was gone or is rocked, battery end cover 100 can not rock for the vehicle, that is the electric core group can not rock for the vehicle, and then improves the stability of electric core group.

Alternatively, the mounting holes 7 include two, and the two mounting holes 7 are arranged axisymmetrically with respect to the center line of the cover body 1. Each mounting hole 7 is provided with a claw 71 which is distributed outwards towards the direction far away from the containing cavity, and the battery end cover 100 is stably connected to the environmental component of the vehicle through the two claws 71, so that the stability of the battery end cover 100 is further improved.

In some embodiments of the present invention, as shown in fig. 1, the battery end cap 100 further includes a supporting rib 8, the supporting rib 8 is arranged to intersect with the reinforcing rib 4, and both ends of the supporting rib 8 are respectively connected to the first protection portion 3a and the second protection portion 3 b. The support ribs 8 further enhance the structural strength of the battery end cap 100, and ensure that the battery end cap 100 is not extruded and deformed after being extruded by external force.

Alternatively, the support rib 8 includes a plurality of support ribs 8, the plurality of support ribs 8 are arranged in parallel, and both ends of each support rib 8 are respectively connected to the first protection portion 3a and the second protection portion 3 b. The structural strength of the lid body 1 is further enhanced.

Optionally, the plurality of supporting ribs 8 are arranged in a staggered manner with the heat dissipation holes 2, so that the supporting ribs 8 are ensured not to interfere with the heat dissipation of the electric core pack.

In some embodiments of the present invention, as shown in fig. 1, the reinforcing rib 4 includes a plurality of reinforcing ribs 4, the plurality of reinforcing ribs 4 are arranged in parallel, and each reinforcing rib 4 extends along the upper and lower ends of the cover body 1. Many stiffening ribs 4 can further strengthen the structural strength of lid 1, and place electric core group in holding the intracavity, and the one end butt of electric core group is in the one end of many stiffening ribs 4, increases the electric core group and is holding the stability of intracavity.

Alternatively, the end faces of the support ribs 8 are not higher than the end faces of the reinforcing ribs 4. That is, the end face of the supporting rib 8 is lower than or equal to the end face of the reinforcing rib 4, when the end face of the supporting rib 8 is equal to the end face of the reinforcing rib 4, that is, the end face of the supporting rib 8 is flush with the end face of the reinforcing rib 4, the electric core group is placed in the accommodating cavity, and one end of the electric core group abuts against the end faces of the plurality of reinforcing ribs 4 and the plurality of supporting ribs 8, so that the stability of the electric core group in the accommodating cavity is improved.

Advantageously, the end surfaces of the supporting ribs 8 are lower than the end surfaces of the reinforcing ribs 4, so that the contact area between the electric core pack and the battery end cover 100 is reduced, the heat dissipation performance of the battery end cover 100 is improved, and the service life of the electric core pack is prolonged.

The following describes a battery pack according to an embodiment of the present invention.

According to the utility model discloses battery package, include: a battery pack and two battery end caps 100.

Wherein, the electric core group includes at least one electric core.

The two battery end covers 100 are the battery end covers 100, the two battery end covers 100 are respectively connected to two opposite ends of the electric core group, and at least part of the electric core group is arranged in the accommodating cavity.

According to the structure, the utility model discloses the battery package, through connecting two battery end covers 100 respectively at the relative both ends of electric core group, the battery end cover 100 at both ends is used for the safety of protection electric core group respectively, improve the security of battery package, and at the in-process of electric core group work, the battery end cover 100 at both ends can give off the produced heat of electric core group simultaneously, be favorable to the timely heat dissipation of electric core group, guarantee that the heat can not gather, avoid the heat to gather to lead to electric core group thermal runaway, effectively prolong the life of electric core group.

Optionally, one battery cell is a single soft package battery.

Alternatively, the electric core group can be a plurality of soft package batteries connected in series or in parallel.

The specific structure of the battery end cap 100 and the battery pack according to the embodiment of the present invention will be described with reference to the drawings. The embodiments of the present invention may be all embodiments combined by the foregoing technical solutions, and are not limited to the following specific embodiments.

Example 1

A battery end cap 100, as shown in fig. 1, comprising: a cover body 1 and reinforcing ribs 4.

As shown in fig. 1, opposite sides of the cover 1 are bent obliquely outward to form a first protection portion 3a and a second protection portion 3b, the first protection portion 3a and the second protection portion 3b are arranged in axial symmetry with a center line of the cover 1, and a receiving cavity is formed between the first protection portion 3a, the second protection portion 3b and the cover 1.

The reinforcing rib 4 extends perpendicularly to the surface of the cover body 1, the reinforcing rib 4 is arranged in the accommodating cavity, one end of the reinforcing rib 4 is connected with the cover body 1, and the end face of one side of the reinforcing rib 4, which is far away from the cover body 1, is flush with the end faces of the first protection part 3a and the second protection part 3 b.

Example 2

Different from embodiment 1, in the battery end cover 100, on the basis of embodiment 1, the first protection part 3a and the second protection part 3b extend in a smooth arc shape from the edge of the cover body 1 to the direction outside the accommodating cavity, the end part of the first protection part 3a and the end part of the second protection part 3b both extend straightly in the direction away from each other to form a straight section, and the plane of the straight section is flush with the plane of the reinforcing rib 4.

Example 3

Different from embodiment 2, in embodiment 2, as shown in fig. 1, the battery end cap 100 further includes a third protection portion 3c and a fourth protection portion 3d, both ends of the third protection portion 3c and the fourth protection portion 3d are connected to the first protection portion 3a and the second protection portion 3b, the third protection portion 3c is connected to the upper portion of the cover body 1, the fourth protection portion 3d is connected to the lower portion of the cover body 1, a containing cavity is defined by the first protection portion 3a, the second protection portion 3b, the third protection portion 3c, the fourth protection portion 3d and the cover body 1, and one side of the containing cavity, which is far away from the cover body 1, is open.

When the terminal surface of third protection portion 3c and the terminal surface of fourth protection portion 3d all are higher than when straight section is located, and the terminal surface of third protection portion 3c and the terminal surface parallel and level of fourth protection portion 3d, third protection portion 3c forms first ka tai 5 with straight section respectively, and fourth protection portion 3d forms second ka tai 6 with straight section respectively.

Example 4

A battery end cap 100 is different from embodiment 1 in that, in embodiment 1, as shown in fig. 2, a plurality of heat dissipation holes 2 are provided on a cap body 1, and the heat dissipation holes 2 communicate with a housing cavity.

As shown in fig. 2, two mounting holes 7 are symmetrically formed in the cover body 1, and claws 71 are disposed in the two mounting holes 7 and face outward away from the accommodating cavity.

Example 5

One difference from embodiment 1 is that, in addition to embodiment 1, the battery end cap 100 further includes a support rib 8, the support rib 8 is arranged to intersect with the reinforcing rib 4, and both ends of the support rib 8 are respectively connected to the first protection portion 3a and the second protection portion 3 b.

The two reinforcing ribs 4 are arranged in parallel, each reinforcing rib 4 extends along the upper end and the lower end of the cover body 1, and the end face of the support rib 8 is not higher than the end face of the reinforcing rib 4.

Example 6

A battery pack, comprising: a battery pack and two battery end caps 100.

Wherein, the electric core group includes at least one electric core.

The two battery end covers 100 are the battery end covers 100 in embodiment 1, the two battery end covers 100 are respectively connected to two opposite ends of the electric core group, and at least part of the electric core group is arranged in the accommodating cavity.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Two support ribs 8 are shown in fig. 1 for illustrative purposes, but it is obvious to those skilled in the art after reading the above technical solutions that the solution can be applied to three or more support ribs 8, which also falls within the protection scope of the present invention.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery end cap, comprising:

the two opposite sides of the cover body are bent outwards in an inclined mode to form a first protection part and a second protection part, and the first protection part and the second protection part are arranged in an axisymmetric mode by the center line of the cover body; an accommodating cavity is formed among the first protection part, the second protection part and the cover body;

the reinforcing rib extends perpendicular to the surface of the cover body, the reinforcing rib is arranged in the accommodating cavity, one end of the reinforcing rib is connected with the cover body, and the end face of one side, away from the cover body, of the reinforcing rib is flush with the end faces of the first protection portion and the second protection portion.

2. The battery end cap of claim 1, wherein the first and second protection portions extend from the edge of the cover body in a smooth arc shape toward the outside of the receiving cavity, and wherein the end portions of the first and second protection portions each extend straight in a direction away from each other to form a straight section, and wherein the plane of the straight section is flush with the plane of the reinforcing rib.

3. The battery end cover according to claim 2, further comprising a third protection portion and a fourth protection portion, wherein both ends of the third protection portion and the fourth protection portion are connected to the first protection portion and the second protection portion, the third protection portion is connected to the upper portion of the cover body, the fourth protection portion is connected to the lower portion of the cover body, the accommodating cavity is defined by the first protection portion, the second protection portion, the third protection portion, the fourth protection portion and the cover body, and one side of the accommodating cavity, which is far away from the cover body, is open.

4. The battery end cap of claim 3, wherein a longitudinal cross-sectional profile of the battery end cap parallel to the cover increases in size in a direction from the face of the cover to the face of the straight section.

5. The battery end cap of claim 3, wherein the end face of the third protection portion is not lower than the plane of the flat section, and the end face of the fourth protection portion is not lower than the plane of the flat section;

when the terminal surface of third protection portion with the terminal surface of fourth protection portion all is higher than when straight section is located, just the terminal surface of third protection portion with the terminal surface parallel and level of fourth protection portion, third protection portion respectively with straight section forms first ka tai, fourth protection portion respectively with straight section forms the second ka tai.

6. The battery end cap of any one of claims 1-5, wherein the cover has a plurality of heat dissipation holes therein, the heat dissipation holes communicating with the receiving cavity.

7. The battery end cover according to any one of claims 1-5, wherein a plurality of mounting holes are symmetrically formed in the cover body, and claws are arranged in the plurality of mounting holes and face outwards away from the accommodating cavity.

8. The battery end cap of any one of claims 1-5, further comprising a support rib disposed across the reinforcing rib, and both ends of the support rib are connected to the first and second protection parts, respectively.

9. The battery end cap of claim 8, wherein the reinforcing ribs comprise a plurality of reinforcing ribs arranged in parallel, each of the reinforcing ribs extending along upper and lower ends of the cover, and end faces of the support ribs are not higher than end faces of the reinforcing ribs.

10. A battery pack, comprising:

the battery pack comprises at least one battery cell;

two battery end covers according to any one of claims 1-9, the two battery end covers are respectively connected to two opposite ends of the electric core group, and at least part of the electric core group is arranged in the accommodating cavity.

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