CN115548542A

CN115548542A - Battery end cover assembly, battery pack and electric equipment

Info

Publication number: CN115548542A
Application number: CN202211399261.6A
Authority: CN
Inventors: 胡岳霖
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2022-12-30
Anticipated expiration: 2042-11-09
Also published as: CN115548542B

Abstract

The application discloses battery end cover subassembly, battery package and consumer relates to battery packaging technical field. The battery end cap assembly includes: apron, upset piece, sealing washer and installed part. The apron has notes liquid hole and first connecting portion, and the inner wall of annotating the liquid hole is close to the outside one end of battery and is provided with first recess. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The turnover piece is matched with the liquid injection hole, the sealing ring is sleeved in the second groove, and when liquid injection is not needed, the turnover piece seals and closes the liquid injection hole; when liquid needs to be injected, external force is applied to the edge of the turnover piece to enable the turnover piece to be turned over, and the liquid injection hole is opened. First connecting portion are connected with the second connecting portion for the installed part is connected in the apron and is covered the one end of locating the upset piece near the battery outside. By adopting the design, the sealing structure of the battery end cover can be detached, and secondary supplementary liquid injection can be realized by pressing.

Description

Battery end cover assembly, battery pack and electric equipment

Technical Field

The application relates to the technical field of battery packaging, in particular to a battery end cover assembly, a battery pack and electric equipment.

Background

The battery usually needs to guarantee sufficient electrolyte and just can normally work, and the notes liquid mouth of electrolyte sets up on the battery end cover usually, and inside the battery was annotated to the electrolyte accessible notes liquid mouth, need adopt the sealing member to seal on annotating the liquid mouth after annotating the liquid completion, and usable laser welding will annotate the liquid mouth and seal up, ensures that the weeping phenomenon can not take place in the battery use.

In the service life of the battery, the electrolyte is lost due to repeated charging and discharging processes, the service performance of the battery is reduced, and the normal continuous operation of the battery can be ensured only by replenishing the electrolyte in the battery. In the prior art, most of the processes are that the liquid injection hole part is welded after the electrolyte is injected, so that the seal cannot be disassembled, the electrolyte cannot be supplemented in time, and the service life and the utilization rate of the battery are influenced.

Disclosure of Invention

It is a primary object of the present application to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery end cap assembly and a battery with a detachable sealing structure, which facilitates the secondary liquid injection of the battery.

In order to achieve the purpose, the following technical scheme is adopted in the application:

according to one aspect of the application, a battery end cap assembly is provided that includes a cover plate, a flip member, a seal ring, and a mounting member. The cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The turnover piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove, and when liquid injection is not needed, the turnover piece seals and closes the liquid injection hole; when liquid needs to be injected, external force is applied to the edge of the turnover piece to enable the turnover piece to turn over and open the liquid injection hole. The first connecting portion is connected with the second connecting portion, so that the mounting piece is connected to the cover plate and covers one end, close to the outside of the battery, of the turnover piece.

The application provides a battery end cover subassembly locates the upset piece through the sealing washer cover, wholly sets up in the first recess in apron notes liquid hole for when needs annotate liquid to the battery, only need press the upset piece after open notes liquid hole and can be in order to realize annotating the liquid. When needs are sealed, upset piece and sealing washer and the sealed cooperation of annotating the first recess in liquid hole, and the installed part lid establishes protection upset piece. Can realize not needing the welding to seal to sealed can dismantle, be convenient for annotate the secondary of battery. Particularly, when the price of the electrolyte fluctuates, the secondary liquid injection can be performed on the battery with the battery end cover assembly when the price of the electrolyte is relatively low, so that the electrolyte is supplemented, and the use cost of the battery is integrally reduced.

According to one embodiment of the application, the apron includes the body and set up in the body is close to the outside boss of battery, annotate the liquid hole and run through the body with the boss, first connecting portion set up in the periphery of boss.

In this application, through set up the boss on the apron body, can provide certain connection support for the connection of installed part to the setting of boss can make the installation operation more convenient.

According to one embodiment of the present application, the mounting member has a cavity at an end thereof close to the inside of the battery, and the second connecting portion is provided at an inner wall of the cavity, the cavity accommodating the boss.

In this application, set up the cavity and can hold the boss towards the position of boss at the installed part to can realize mutually supporting between the inner wall of cavity and the outer wall of boss and connect, be favorable to the installed part to be fixed in the apron steadily firmly, the reinforcing is to the guard action of upset piece.

According to one embodiment of the present application, the battery end cap assembly further includes a gasket sleeved on the boss and located between the mounting member and the body of the cover plate.

In this application, set up the gasket between the body of apron and installed part, can realize can be connected inseparabler between installed part and the apron, play better sealed effect.

According to one embodiment of the application, the mounting member compresses the gasket to achieve the sealing connection with the cover plate, and the compression rate of the gasket is 25% -40%.

In the present application, the degree of sealing between the installation member and the cover plate can be controlled by controlling the compression rate of the gasket. And the gasket is not easy to damage, so that the service life of the battery end cover assembly can be prolonged and the cost can be reduced on the premise of ensuring good sealing performance.

According to one embodiment of the present application, the height H1 of the boss, the compressed thickness W1 of the gasket, and the depth S1 of the cavity satisfy: s1+ W1 is more than or equal to H1.

In this application, the thickness after the gasket compression and the height of the degree of depth sum more than or equal to boss of cavity can not be interfered by the boss and hinder when can realizing the installed part installation, further guarantees the sealed effect between installed part and the apron.

According to one of the embodiments of the application, the apron still includes the heavy platform hole, heavy platform hole intercommunication set up in annotate liquid hole be close to the outside one side of battery, first connecting portion set up in the lateral wall of heavy platform hole.

In this application, set up the heavy platform hole of being connected with annotating the liquid hole at the apron, first connecting portion set up in the lateral wall in heavy platform hole, can realize that the installed part passes through first connecting portion and connects in the apron to need not set up the boss at the apron, can save installation space, and save the material of apron.

According to one embodiment of the present application, the battery end cap assembly further includes a spacer block disposed within the countertop hole and between the mounting member and the bottom wall of the countertop hole.

In this application, set up the cushion between the diapire of installed part and heavy platform hole, can realize the sealing connection of installed part and apron.

According to one embodiment of the application, the diameter of the cushion block is larger than the diameter of the liquid injection hole and smaller than the diameter of the counter sink hole.

In this application, the cushion diameter is greater than the diameter of annotating the liquid hole, can realize that the cushion covers on the sealed upset piece of annotating the liquid hole, can play the effect of protection upset piece to can also realize the sealed between cushion and the upset piece.

According to one embodiment of the application, the mounting piece compresses the cushion block to achieve the sealing connection with the cover plate, and the compression rate of the cushion block is 25% -40%.

In this application, the degree of sealing between the flip and the cover plate can be controlled by controlling the compression ratio of the cushion block. And the cushion block is not easy to damage, so that the service life of the battery end cover assembly can be prolonged and the cost can be reduced on the premise of ensuring good sealing performance.

According to one of the embodiments of the present application, the reverse member has a shaft extending in a radial direction, and the reverse member is connected to the first recess of the pour hole through the shaft.

In this application, set up the back shaft at the both ends of the diameter direction of upset piece for connect the inside of annotating the liquid hole, can realize that the upset piece sets up on annotating the liquid hole more steadily firmly, and can realize that upset piece upset in-process is stable safety.

According to one of the embodiments of this application, first recess is in annotate liquid hole's radial direction has the arc inner wall, and the cover is located behind the second recess, the external diameter of sealing washer is greater than the diameter of two tip of arc inner wall is less than the maximum diameter of arc inner wall.

In this application, be the arc inner wall with first recess design, the resistance is less when can making upset piece upset to the arc inner wall also can realize good sealed effect, after the second recess of upset piece is located to the sealing washer cover, the external diameter of sealing washer is greater than the diameter of two tip of arc inner wall is less than during the maximum diameter of arc inner wall, can realize that sealing washer and upset piece keep annotating the first recess in liquid hole, and the power of exerting force to upset piece during the upset can not make upset piece fall into annotate the liquid hole to can realize better sealed.

According to one embodiment of the application, the first groove is in interference fit with the sealing ring, and the interference magnitude of the first groove and the sealing ring is 0.15-0.25mm.

In the application, the first groove is in interference fit with the sealing ring, the interference magnitude is 0.15-0.25mm, the first groove and the sealing ring can be sealed, and electrolyte is prevented from leaking; and the sealing is not too tight and is difficult to disassemble.

According to one embodiment of the application, the second groove has a rectilinear outer wall in the radial direction of the turn-over piece, the diameter of the rectilinear outer wall being greater than the inner diameter of the sealing ring.

In this application, set the second recess to the rectangular channel, have the linear type outer wall in the radial direction of upset piece, can make the cooperation of upset piece and sealing washer inseparabler, can make the sealing washer firmly block when upset piece and establish in the second recess of upset piece.

According to one embodiment of the application, the second groove is in interference fit with the sealing ring, and the interference magnitude of the second groove and the sealing ring is 0.3-0.45mm.

In the application, the interference magnitude of the second groove and the sealing ring is set to be 0.3-0.45mm, the sealing ring can be tightly fitted with the turnover part, the sealing ring is firmly clamped in the second groove of the turnover part when the turnover part is turned over, and the sealing ring cannot be influenced by the acting force between the sealing ring and the first groove of the liquid injection hole.

According to one embodiment of the application, one end of the mounting member near the outside of the battery is provided with a cross groove, a straight groove or a polygonal groove.

In this application, set up cross recess, straight line groove, circular slot or polygon groove at the outside one end of installed part, can be convenient for anchor clamps snatch, rotate the installed part.

According to another aspect of the present application, a battery is provided, which includes a housing, a battery core assembly disposed in the housing, and a battery end cap assembly connected to the housing, wherein the battery end cap assembly includes the above-mentioned battery end cap assembly.

According to a third aspect of the present application, there is provided a battery pack comprising a battery pack, wherein the battery pack comprises the above-described battery.

According to a fourth aspect of the present application, there is provided an electric device including the battery pack described above.

The application provides a battery, the battery end cover subassembly more than adopting can realize sealed dismantling, has realized simple to operate, sealing performance is good, can be convenient for prevent the battery weeping when annotating the secondary of battery.

According to the technical scheme, the battery end cover assembly has the advantages and positive effects that:

the application provides a battery end cover subassembly, including apron, upset piece, sealing washer and installed part. The cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The turnover part is matched with the liquid injection hole, the sealing ring sleeve is arranged on the second groove of the turnover part, the turnover part and the sealing ring are integrally matched with the first groove of the liquid injection hole, the turnover part is arranged in the first groove of the liquid injection hole through the sealing ring sleeve, and the turnover part is integrally arranged in the first groove of the liquid injection hole in the cover plate, so that when a battery needs to be injected with liquid, the turnover part is only required to be pressed and turned over, and then the liquid injection hole is opened, and the liquid injection can be realized. When sealing is needed, the turnover piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole. The turnover piece seals and closes the liquid injection hole; when liquid is injected, external force is applied to the edge of the turnover piece, so that the turnover piece is turned over, and the liquid injection hole is opened. The first connecting portion is connected with the second connecting portion, so that the mounting member is connected to the cover plate and covers one end of the turnover member close to the outside of the battery. The installed part can be connected in the apron through interconnect complex first connecting portion and second connecting portion, and the protection upset piece is established to the lid. The battery end cover assembly realizes that the battery end cover assembly does not need welding to seal, is sealed and detachable, can realize opening of the liquid injection hole by pressing, is convenient for injecting liquid into the secondary of the battery, and is simple and convenient to operate.

The battery that this application provided, including the casing, set up the electric core subassembly in the casing and connect in the battery end cover subassembly of casing, the battery end cover subassembly includes foretell battery end cover subassembly, and easy and simple to handle when the secondary annotates liquid to can not lead to the fact destruction to seal structure, still can keep good sealed effect after annotating the liquid.

Drawings

Various objects, features and advantages of the present application will become more apparent from the following detailed description of preferred embodiments thereof, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the application and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

fig. 1 is a schematic structural view of a cell end cap assembly of the present application.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a top view of the assembled battery end cap assembly of fig. 2.

Fig. 4 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 3.

Fig. 5 is a front view of the cover plate of fig. 1.

Fig. 6 is a sectional view B-B of fig. 5.

Fig. 7 is a front view of the seal ring of fig. 1.

Fig. 8 is a cross-sectional view C-C of fig. 7.

Fig. 9 is a front view of the mount of fig. 1.

Fig. 10 is a cross-sectional view taken along line D-D of fig. 9.

Fig. 11 is a front view of the flipper of fig. 1.

Fig. 12 is a top view of fig. 11.

Fig. 13 is a front view of the gasket of fig. 1.

Fig. 14 is a cross-sectional view E-E of fig. 13.

Fig. 15 is a schematic diagram of the assembled cell of the cell end cap assembly of fig. 1.

Fig. 16 is a schematic structural view of a second embodiment of the cell end cap assembly of the present application.

Fig. 17 is a front view of fig. 16.

Fig. 18 is a top view of the assembled battery end cap assembly of fig. 17.

Fig. 19 is a sectional view F-F of fig. 18.

Fig. 20 is a front view of the cover plate of fig. 16.

Fig. 21 is a sectional view taken along line G-G of fig. 20.

FIG. 22 is a front view of the mount of FIG. 16

Fig. 23 is a cross-sectional view taken along line P-P of fig. 22.

Fig. 24 is a schematic diagram of the assembled cell of the cell end cap assembly of fig. 16.

The reference numerals are explained below:

10. a battery end cap assembly;

11. a cover plate;

111. a liquid injection hole;

112. a first connection portion;

113. a first groove;

1131. an arc-shaped inner wall;

114. a body;

115. a boss;

116. sinking a platform hole;

12. a turnover piece;

121. a second groove;

13. a seal ring;

131. a first elastic member;

132. a second elastic member;

14. a mounting member;

141. a second connecting portion;

142. a cavity;

143. a cross groove;

15. a gasket;

16. cushion blocks;

20. a housing;

30. an electrical core assembly;

100. a battery;

w1, the thickness of the gasket after compression;

s1, depth of a cavity;

H1. the height of the boss;

d1. the inner diameter of the seal ring;

d2. the outer diameter of the seal ring;

D1. the maximum diameter of the arcuate inner wall;

D2. diameter of the straight outer wall.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application are described in detail below in the specification. As will be realized, the application is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the invention, and the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

In the following description of various exemplary embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration various exemplary structures, systems, and steps in which aspects of the application may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present application. When introducing elements/components/etc. described and/or illustrated herein, the terms "first," "second," and "third," etc. are used to indicate the presence of one or more elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1 to 14, the battery end cap assembly 10 of the present application includes a cap plate 11, a flip member 12, a sealing ring 13, and a mounting member 14. The cover plate 11 has a pour hole 111 and a first connecting portion 112, and a first recess 113 is provided at one end of the inner wall of the pour hole 111 near the outside of the battery. The flip 12 has a second groove 121 along the outer circumference. The seal ring 13 has elasticity. The mount 14 has a second connecting portion 141. The turning part 12 is matched with the liquid injection hole 111, the sealing ring 13 is sleeved on the second groove 121, and when liquid injection is not needed, the turning part 12 seals and closes the liquid injection hole 111; when liquid injection is needed, external force is applied to the edge of the turnover part 12 to turn over the turnover part 12, and the liquid injection hole 111 is opened. The first connection part 112 is connected to the second connection part 141 such that the mounting part 14 is connected to the cap plate 11 and covers an end of the folder 12 near the outside of the battery.

The application provides a battery end cover subassembly locates the upset piece through the sealing washer cover, wholly sets up in the first recess in apron notes liquid hole for when needs annotate liquid to the battery, only need press the upset piece after open notes liquid hole and can be in order to realize annotating the liquid. When needs are sealed, upset piece and sealing washer and the sealed cooperation of annotating the first recess in liquid hole, and the protection upset piece is established to installed part lid. Can realize not needing the welding to seal to sealed can dismantle, be convenient for annotate the secondary of battery.

The first connecting portion and the second connecting portion may be screwed or snapped, so long as the mounting member is connected to the cover plate.

In the present embodiment, the cover plate 11 includes a body 114 and a boss 115 provided on the body 114 and near the outside of the battery, the liquid injection hole 111 penetrates the body 114 and the boss 115, and the first connection portion 112 is provided on the outer periphery of the boss 115. Set up the boss on the apron body, can provide certain connection support for the connection of installed part to the setting of boss can make the installation operation more convenient.

In this embodiment, the mounting member 14 has a cavity 142 at an end thereof adjacent to the interior of the battery, and the second connecting portion 141 is disposed on an inner wall of the cavity 142, the cavity 142 receiving the boss 115. Set up the cavity and can hold the boss towards the position of boss at the installed part to can realize that can mutually support between the inner wall of cavity and the outer wall of boss and be connected, be favorable to the installed part to be fixed in the apron steadily.

In this embodiment, the battery end cap assembly 10 further includes a gasket 15, and the gasket 15 is sleeved on the boss 115 and located between the mounting member 14 and the body 114 of the cover plate 11. Set up the gasket between the body of apron and installed part, can realize can be connected inseparabler between installed part and the apron, play better sealed effect.

In this embodiment, the mounting member 14 compresses the gasket 15 to achieve a sealing connection with the cover plate 11, and the compression rate of the gasket 15 is 25% -40%. The degree of sealing between the mounting member and the cover plate can be controlled by controlling the compression rate of the gasket. The gasket is not easy to damage on the premise of ensuring good sealing performance.

In this embodiment, the height H1 of the boss, the thickness W1 of the compressed gasket, and the depth S1 of the cavity satisfy: s1+ W1 is more than or equal to H1. The thickness after the gasket compression and the degree of depth sum more than or equal to the height of boss of cavity can not interfered by the boss when can realizing the installed part installation and hinder, further guarantee the sealed effect between installed part and the apron.

As shown in fig. 15, the present application further provides a battery 100, wherein the battery 100 includes a housing 20, a cell assembly 30 disposed in the housing 20, and a battery end cap assembly 10 connected to the housing 20, the housing 20 has an accommodating cavity and an opening for communicating the accommodating cavity with an external space, the cell assembly 30 is located in the accommodating cavity and is fixedly connected to the bottom of the housing 20, the battery end cap assembly 10 is fixedly connected to the housing 20 and seals the opening of the housing 20, and the battery end cap assembly 10 is further connected to the cell assembly 30.

The battery end cap assembly 10 is as described in the above embodiments, and in combination with the above battery end cap assembly 10, due to the detachable seal, the electrolyte can be supplemented to the battery 100 in the following process, so that the secondary use of the battery 100 is facilitated.

In some other embodiments, as shown in fig. 16 to 23, the cover plate 11 includes a counter sink hole 116, the counter sink hole 116 is disposed in communication with a side of the liquid injection hole 111 close to the outside of the battery, and the first connecting portion 112 is disposed on a side wall of the counter sink hole 116. Set up at the apron and annotate the heavy platform hole that the liquid jogged joint, first connecting portion set up in the lateral wall in heavy platform hole, can realize that the installed part passes through first connecting portion and connects in the apron to need not set up the boss at the apron, can save installation space, and save the material of apron.

In this embodiment, the cell end cap assembly 10 further includes a spacer 16, the spacer 16 being disposed within the countertop aperture 116 and between the mounting member 14 and the bottom wall of the countertop aperture 116. The setting of cushion can realize the sealing connection of installed part and apron.

In this embodiment, the diameter of the spacer 16 is larger than the diameter of the pour hole 111 and smaller than the diameter of the counter sink hole 116. The cushion block can be covered on the turnover part of the sealed liquid injection hole, the effect of protecting the turnover part can be achieved, and sealing between the cushion block and the turnover part can also be achieved.

In this embodiment, the mounting member 14 compresses the spacer 16 to achieve a sealing connection with the cover plate 11, and the compression ratio of the spacer 16 is 25% -40%. The compression ratio through the control cushion can realize guaranteeing under the not fragile condition of cushion, can control the sealed degree between upset piece and the apron, prolongs battery end cover assembly's life, reduce cost.

In other embodiments, the pouring member 12 has a radially extending shaft, by which the pouring member 12 is connected to the first recess 113 of the pouring opening 111. The shaft that radially extends through setting up on the upset piece comes to set up the upset piece on annotating the liquid hole, and is more stable when can realizing the upset of upset piece, and whole structure is more firm, uses reliably.

In the above embodiment, referring to fig. 6 and 8, the first groove 113 has an arc-shaped inner wall 1131 in the radial direction of the liquid filling hole 111, and the outer diameter D2 of the sealing ring 13 after being sleeved in the second groove 121 is larger than the diameter of the two end portions of the arc-shaped inner wall 1131 and smaller than the maximum diameter D1 of the arc-shaped inner wall 1131. Be the arc inner wall with first recess design, the resistance is less when can making upset piece upset to the arc inner wall also can realize good sealed effect, and the external diameter behind the second recess is located to the sealing washer cover is greater than the diameter of two tip of arc inner wall, is less than the maximum diameter of arc inner wall, can realize that the upset of upset piece is stable and sealed better.

In the above embodiment, the first groove 113 is in interference fit with the sealing ring 13, and the interference between the first groove 113 and the sealing ring 13 is 0.15-0.25mm. The interference fit means that the first groove and the sealing ring can be squeezed to compress the sealing ring, and the interference magnitude means the size of the sealing ring which is compressed after being installed. The first groove is in interference fit with the sealing ring, the interference magnitude is 0.15-0.25mm, the first groove and the sealing ring can be sealed, and electrolyte is prevented from leaking; and the sealing is not too tight and is difficult to disassemble. The interference may be 0.18mm, 0.2mm, 0.22mm, etc.

In the above embodiment, as can be seen in fig. 8 and 11, the second groove 121 has a rectilinear outer wall in the radial direction of the flip 12, the diameter D2 of which is greater than the inner diameter D1 of the sealing ring 13. Set the second recess to the rectangular channel, have the linear type outer wall in the radial direction of upset piece, can make the cooperation of upset piece and sealing washer inseparabler, can make the sealing washer firmly block when the upset piece and establish in the second recess of upset piece.

In the above embodiment, the second groove 121 is in interference fit with the sealing ring 13, and the interference between the second groove 121 and the sealing ring 13 is 0.3-0.45mm. The interference magnitude of the second groove and the sealing ring is set to be 0.3-0.45mm, the sealing ring can be tightly fitted with the turnover part, the sealing ring is firmly clamped in the second groove of the turnover part when the turnover part is turned over, and the sealing ring cannot be influenced by the acting force between the sealing ring and the first groove of the liquid injection hole. The interference may be 0.33mm, 0.38mm, 0.42mm, etc.

In the above-described embodiment, the end of the mounting member 14 near the outside of the battery is provided with a cross groove, a straight groove, or a polygonal groove. Be convenient for anchor clamps snatch, rotate the installed part.

In the above embodiment, the sealing ring may be made of rubber, which can prevent the sealing ring from rubbing against the liquid injection hole wall of the metal to generate metal chips, thereby preventing the metal chips from falling into the electrolyte to cause short circuit. The gasket 15 and the spacer 16 may be made of rubber, and further may be made of silicone.

As shown in fig. 24, the present application further provides a battery 100, wherein the battery 100 includes a housing 20, a cell assembly 30 disposed in the housing 20, and a battery end cap assembly 10 connected to the housing 20, the housing 20 has an accommodating cavity and an opening communicating the accommodating cavity with an external space, the cell assembly 30 is located in the accommodating cavity and is fixedly connected to the bottom of the housing 20, the battery end cap assembly 10 is fixedly connected to the housing 20 and seals the opening of the housing 20, and the battery end cap assembly 10 is further connected to the cell assembly 30.

The present application also provides a battery pack including a battery pack, wherein the battery pack includes the battery shown in fig. 10.

The application also provides an electric device, which adopts the battery pack. The electric equipment may take various forms, for example, a mobile phone, a portable device, a notebook computer, a battery car, a ship, a spacecraft, an electric toy, an electric power tool, and the like, for example, the spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, and the like, the electric toy includes a stationary or mobile electric toy, for example, a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the electric power tool includes a metal cutting electric tool, an abrasive electric tool, an assembly electric tool, and an electric tool for railways, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an electric impact drill, a concrete vibrator, and an electric planer.

It should be noted herein that the cell end cap assemblies shown in the drawings and described in this specification are only a few examples of the wide variety of cell end cap assemblies that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any of the details or any of the components of the cell end cap assembly shown in the drawings or described in this specification.

The foregoing is a detailed description of several exemplary embodiments of the cell end cap assembly set forth herein, which is described below as an example of the use of the cell end cap assembly set forth herein.

With reference to fig. 1 to 15, the application proposes a use process of the battery end cap assembly, which is as follows: the sealing ring is arranged in the second groove of the turnover piece and then integrally arranged in the first groove of the liquid injection hole, the battery is in a state that liquid injection is not needed at the moment, and the liquid injection hole is sealed integrally by the turnover piece and the sealing ring. Afterwards, the gasket is sleeved outside the boss of the cover plate, the first connecting part (internal thread) of the mounting part is connected to the first connecting part (external thread) of the cover plate, and the compression ratio of the mounting part to the gasket can be adjusted through threaded connection.

When liquid is annotated to needs carrying out the secondary, take off the installed part, then exert external force to the edge of upset piece and press, upset piece upset is annotated the liquid hole and is opened, can carry out the secondary to the battery and annotate the liquid.

With reference to fig. 16 to 24, the application proposes a use process of the battery end cap assembly, which is as follows: install the sealing washer in the second recess of upset piece, then wholly install in the first recess of annotating the liquid hole, the battery is in the state that need not annotate the liquid this moment, and upset piece and sealing washer are whole sealed annotate the liquid hole. Afterwards, the cushion block is installed in a counter bore of the cover plate to cover the turnover part, the first connecting part (external thread) of the installing part is connected to the first connecting part (internal thread) of the cover plate, and the adjustment of the installing part on the compression ratio of the gasket can be realized through threaded connection.

When liquid is annotated to needs carrying out the secondary, take off installed part and cushion in proper order, then exert external force to the edge of upset piece and press, upset piece upset is annotated the liquid hole and is opened, can carry out the secondary to the battery and annotate the liquid.

Through the use of the battery end cover subassembly of the aforesaid this application, can reach the battery end cover subassembly of this application, through setting up installed part and upset piece, can make the sealed of battery end cover can dismantle, sealed respond well and can realize that the secondary of battery annotates liquid.

In conclusion, the battery end cover assembly that this application provided, including apron, upset piece, sealing washer and installed part. The apron has notes liquid hole and first connecting portion, and the one end that is close to the battery outside on annotating the inner wall in liquid hole is provided with first recess. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The second recess of upset piece is located to the sealing washer cover, and the upset piece cooperatees through the first recess of sealing washer with annotating the liquid hole, locates the upset piece through the sealing washer cover, wholly sets up in the first recess in liquid hole is annotated to the apron for when needs annotate liquid to the battery, only need press the upset piece and open after the upset and annotate the liquid hole and can be in order to realize annotating the liquid. When sealing is needed, the turnover piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole. The liquid injection hole is sealed and closed by the turnover piece; when liquid is injected to needs, external force is applied to the edge of the turnover part, so that the turnover part is turned over, and the liquid injection hole is opened. First connecting portion are connected with the second connecting portion for the installed part is connected in the apron and is covered the one end of locating the upset piece near the battery outside. The installed part can be connected in the apron through interconnect complex first connecting portion and second connecting portion, and the protection upset piece is established to the lid. The battery end cover assembly realizes sealing and dismounting, can realize opening of the liquid injection hole by pressing, and is convenient for secondary liquid injection of a battery.

The battery that this application provided, including foretell battery end cover subassembly, sealed respond well, can supply electrolyte, realize the secondary of battery and use to easy and simple to handle need not destroy battery end cover subassembly.

Exemplary embodiments of the cell end cap assembly and cell set forth herein are described and/or illustrated in detail above. The embodiments of the present application are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc.

Embodiments of the present application are not limited to the specific embodiments described herein, but rather, components of each embodiment may be utilized independently and separately from other components described herein. Each component of one embodiment can also be used in combination with other components of other embodiments. In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description herein, reference to the term "one embodiment," "some embodiments," "other embodiments," or the like, means 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 embodiments of the application. 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.

In embodiments, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the examples can be understood by those of ordinary skill in the art according to specific situations.

The above description is only a preferred embodiment of the claimed embodiments and is not intended to limit the claimed embodiments, and various modifications and changes may be made to the claimed embodiments by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the applied embodiment shall be included in the protection scope of the applied embodiment.

Claims

1. A battery end cap assembly, comprising: the method comprises the following steps:

the cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole;

the turnover piece is provided with a second groove along the periphery;

the sealing ring has elasticity;

a mounting member having a second connecting portion;

the turnover piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove, and when liquid injection is not needed, the turnover piece seals and closes the liquid injection hole; when liquid needs to be injected, external force is applied to the edge of the turnover piece to enable the turnover piece to turn over, and the liquid injection hole is opened;

the first connecting portion is connected with the second connecting portion, so that the mounting piece is connected to the cover plate and covers one end, close to the outside of the battery, of the turnover piece.

2. The battery end cap assembly of claim 1, wherein: the cover plate comprises a body and a boss arranged on the body and close to the outside of the battery, the liquid injection hole penetrates through the body and the boss, and the first connecting portion is arranged on the periphery of the boss.

3. The battery end cap assembly of claim 2, wherein: the mounting part is close to one end of the inside of the battery is provided with a cavity, the second connecting part is arranged on the inner wall of the cavity, and the boss is accommodated in the cavity.

4. The battery end cap assembly of claim 2, wherein: the battery end cover assembly further comprises a gasket, and the gasket is sleeved on the boss and located between the mounting piece and the body of the cover plate.

5. The battery end cap assembly of claim 4, wherein: the mounting piece compresses the gasket to realize the sealing connection with the cover plate, and the compression rate of the gasket is 25% -40%.

6. The battery end cap assembly of claim 5, wherein: the height H1 of boss, thickness W1 after the gasket compression, and the degree of depth S1 of cavity satisfy: s1+ W1 is more than or equal to H1.

7. The battery end cap assembly of claim 1, wherein: the cover plate further comprises a counter sink hole, the counter sink hole is communicated with one side, close to the outside of the battery, of the liquid injection hole, and the first connecting portion is arranged on the side wall of the counter sink hole.

8. The battery end cap assembly of claim 7, wherein: the battery end cover assembly further comprises a cushion block, wherein the cushion block is arranged in the counter sink hole and is positioned between the mounting piece and the bottom wall of the counter sink hole.

9. The battery end cap assembly of claim 8, wherein: the diameter of the cushion block is larger than that of the liquid injection hole and smaller than that of the counter sink hole.

10. The battery end cap assembly of claim 8, wherein: the mounting piece compresses the cushion block to achieve sealing connection with the cover plate, and the compression rate of the cushion block is 25% -40%.

11. The battery end cap assembly of claim 1, wherein: the turning piece is provided with a shaft extending along the radial direction, and the turning piece is connected with the first groove of the liquid injection hole through the shaft.

12. The battery end cap assembly of any one of claims 1-11, wherein: the first groove is provided with an arc-shaped inner wall in the radial direction of the liquid injection hole, and after the second groove is sleeved with the first groove, the outer diameter of the sealing ring is larger than the diameters of the two end parts of the arc-shaped inner wall and smaller than the maximum diameter of the arc-shaped inner wall.

13. The battery end cap assembly of any one of claims 1-11, wherein: the first groove is in interference fit with the sealing ring, and the interference magnitude of the first groove and the sealing ring is 0.15-0.25mm.

14. The battery end cap assembly of any one of claims 1-11, wherein: the second groove is provided with a linear outer wall in the radial direction of the turnover piece, and the diameter of the linear outer wall is larger than the inner diameter of the sealing ring.

15. The battery end cap assembly of any one of claims 1-11, wherein: the second groove is in interference fit with the sealing ring, and the interference magnitude of the second groove and the sealing ring is 0.3-0.45mm.

16. The battery end cap assembly of any of claims 1-11, wherein the end of the mounting member adjacent the exterior of the battery is provided with a cross-slot, a straight slot, a circular slot, or a polygonal slot.

17. A battery comprising a housing, a cell assembly disposed within the housing, and a battery end cap assembly attached to the housing, wherein the battery end cap assembly comprises the battery end cap assembly of any of claims 1-11.

18. A battery pack comprising a battery pack, wherein the battery pack comprises the battery of claim 17.

19. An electrical device comprising the battery pack of claim 18.