CN217934070U

CN217934070U - Battery structure

Info

Publication number: CN217934070U
Application number: CN202221918966.XU
Authority: CN
Inventors: 王坤利
Original assignee: Shenzhen Dongfang Xinyuan New Energy Co ltd
Current assignee: Shenzhen Dongfang Xinyuan New Energy Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-29
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to the field of battery structures, in particular to a battery shell and a detachable battery core group arranged in the battery shell, wherein the battery core group comprises more than two parallel battery cores or more than two battery cores connected in series; the positive end of the battery case is provided with a first nickel strap, and the negative end of the battery case is provided with a second nickel strap; under the state that the electric core group is assembled in the battery shell, the positive pole of the electric core group is connected with the first nickel strap, and the negative pole of the electric core group is connected with the second nickel strap. The battery shell is designed, the battery core groups are arranged in the battery shell, and a user can set the number of the battery cores in the battery shell according to needs; through setting up a large amount of electric cores in the battery case, realize the low-cost large capacity battery of assembling out a new pattern, avoided the direct use of a large amount of single batteries, and then avoided assembling the numerous and diverse of a large amount of batteries and installing the local disorder of battery.

Description

Battery structure

Technical Field

The utility model relates to a battery structure field particularly, relates to a battery structure.

Background

Different batteries have different types, for example, batteries with different types such as No. 2, no. 5, SC, F, 1865 and 2170; in life, different batteries are correspondingly used according to different requirements; however, in some cases, a large number of batteries with larger size or capacity are needed to meet the use requirement, for example, in order to achieve a breakthrough of ten thousand lumens of battery power supply of a flashlight, batteries with larger capacity are needed to be used, and if the existing batteries with small capacity are combined, the required power supply capacity cannot be achieved; the installation can satisfy a large amount of batteries of needs, will make the assembly too loaded with trivial details again, and can make the place of assembling the battery too in disorder. It is well known that battery cells of various common size types have a large market demand, and therefore the cost of a single-cell battery is low because the cost investment is already allocated to be extremely thin at an early stage.

When a large-capacity or large-size battery is just appeared, the whole industrial chain is not established, the cost for directly producing the battery is extremely high, the actual market demand quantity is smaller, the cost for separately producing the battery in the early stage is very high due to insufficient demand, therefore, the market supply problem of the product in the transition stage before the mature industrial chain is formed needs to be considered, but the prior art has no corresponding solution.

For the above reasons, the prior art is still insufficient and needs to be developed further.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a battery structure to solve the problem that a new large capacity battery can not be assembled at low cost.

The utility model aims at realizing through the following technical scheme:

the utility model provides a pair of battery structure, include: the battery comprises a battery shell and a detachable battery core group arranged in the battery shell, wherein the battery core group comprises more than two parallel battery cores or more than two battery cores connected in series; the positive end of the battery case is provided with a first nickel strap, and the negative end of the battery case is provided with a second nickel strap; under the state that the electric core group is assembled in the battery shell, the positive pole of the electric core group is connected with the first nickel strap, and the negative pole of the electric core group is connected with the second nickel strap.

Optionally, the battery case includes a cap tip and a case with an opening at one end, and the cap tip covers the opening of the case.

Optionally, the cap tip is rotatably disposed at one end of the opening of the housing, and is covered on the housing by rotating the cap tip.

Optionally, the shell is provided with a first fastening structure, and the cap tip is provided with a second fastening structure matched with the first fastening structure.

Optionally, the side of the battery case is provided with an opening for installing the battery core group, and the opening on the side of the battery case is covered by the cover plate.

Optionally, the cover plate is rotatably disposed on the side of the battery case.

Optionally, the side of the battery case is provided with a third fastening structure, and the cover plate is provided with a fourth fastening structure which is fastened in cooperation with the third fastening structure.

Optionally, the battery structure further comprises an inner cylinder made of a conductive material, and the electric core group is arranged in the inner cylinder; the bottom surface of the negative end in the battery case is provided with a first buckle structure, the bottom surface of the outer side of the inner barrel is provided with a second buckle structure, and the inner barrel is stably arranged in the battery case by being connected with the second buckle structure through the first buckle structure in a buckle mode.

Optionally, the battery case is a cylinder.

Optionally, the open end of the housing is provided with a sealing ring.

The utility model discloses an among the battery structure, include: the battery comprises a battery shell and a detachable battery core group arranged in the battery shell, wherein the battery core group comprises more than two parallel battery cores or more than two battery cores connected in series; the positive end of the battery case is provided with a first nickel strap, and the negative end of the battery case is provided with a second nickel strap; under the state that the electric core group is assembled in the battery shell, the positive pole of the electric core group is connected with the first nickel strap, and the negative pole of the electric core group is connected with the second nickel strap. The battery case is designed, the battery core group is arranged in the battery case, and a user can set the number of the battery cores in the battery case according to needs; through setting up a large amount of electric cores in the battery case, realize the low-cost large capacity battery product of assembling out a new pattern, avoided the direct use of a large amount of single batteries, and then avoided assembling the numerous and diverse and installation battery local in a large number of batteries in disorder.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a structural diagram of the battery structure of the present invention;

fig. 2 is a cross-sectional view of the battery structure of the present invention;

fig. 3 is a top view of the battery structure of the present invention;

fig. 4 is another plan view of the battery structure of the present invention.

Wherein the reference numbers are: 1-battery shell, 2-shell, 3-cap tip, 4-electric core group, 5-electric core, 6-first nickel strap, 7-second nickel strap and 8-inner barrel.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a battery structure according to an embodiment of the present invention includes: the battery comprises a battery shell 1 and a detachable battery core group 4 arranged in the battery shell 1, wherein the battery core group 4 comprises more than two parallel battery cores 5 or more than two battery cores 5 connected in series; a first nickel strap 6 is arranged at the positive electrode end of the battery case 1, and a second nickel strap 7 is arranged at the negative electrode end of the battery case 1; in the state that the electric core group 4 is installed in the battery case 1, the positive pole of the electric core group 4 is connected with the first nickel strap 6, and the negative pole of the electric core group 4 is connected with the second nickel strap 7. The battery case 1 is designed, the battery cell group 4 is arranged in the battery case 1, and a user can set the number of the battery cells 5 in the battery case 1 according to needs; through setting up a large amount of electric cores 5 in battery case 1, realize the low-cost large capacity battery of assembling out a new pattern, avoided the direct use of a large amount of single batteries, and then avoided assembling the numerous and diverse of a large amount of batteries and installing the local disorder of battery.

In addition, if a single battery with a large capacity that can meet the use requirement is directly produced, the production cost becomes high and it is technically difficult; since it is usual to produce products whose technology is mature, either technically or cost-wise, is a preferred option; therefore, a battery product is needed, which can meet the capacitance required by use, can lower the production cost and has no technical problem; the battery cells 5 produced by the prior art are arranged in the shell 2, so that the requirement of electric capacity can be met, the cost is low by using the battery cells 5 produced by the prior art, and the technical problem is not difficult; therefore, the battery structure of the application can meet the requirements of users to a great extent.

In addition, the plurality of battery cells 5 arranged in the battery case 1 may be arranged in parallel with each other, or may be arranged in series; the arrangement of the plurality of battery cores 5 enables the whole battery core group 4 to release higher voltage so as to meet the use requirement of a user on a large-capacity battery.

In some embodiments, in order to install the battery cells 5 or the battery cell groups 4 in the battery case 1, the battery case 1 is configured to include a cap tip 3 and a case 2 with an opening at one end, and the cap tip 3 covers the opening of the case 2; the battery core 5 or the battery core group 4 can be arranged in the battery shell 1 from one end of the opening of the shell 2, and then the opening of the shell 2 is covered by the cap tip 3 for sealing; in addition, in order to guarantee the sealing effect between the cap tip 3 and the shell 2, a sealing ring (not marked in the figure) is arranged at the opening of the shell 2, the sealing performance between the cap tip 3 and the shell 2 is improved due to the arrangement of the sealing ring, and the protection effect on the battery cell 5 can be achieved by effectively preventing moisture in the air from entering the shell 2.

In some embodiments, in order to facilitate the connection between the cap tip 3 and the housing 2, the cap tip 3 is rotatably disposed at one end of the opening of the housing 2, and is covered on the housing 2 by the rotation of the cap tip 3; by the arrangement, the cap tip 3 does not need to be completely detached, so that the cap tip 3 is prevented from being lost, and the cap tip 3 is conveniently covered on the shell 2; after the electric core group 4 is arranged in the shell 2, a user only needs to cover the cap tip 3 on the opening of the shell 2; in order to stably cover the cap tip 3 on the shell 2, a first fastening structure is arranged on the shell 2, and a second fastening structure matched with the first fastening structure is arranged on the cap tip 3; the cap tip 3 is firmly connected with the shell 2 through the fastening of the first fastening structure and the second fastening structure; the first fastening structure and the second fastening structure can be the matching of a micro screw and a screw hole, and the first fastening structure and the second fastening structure can also be the pasting of a glue layer.

In some embodiments, in order to facilitate the installation of the battery cells 5 or the battery core groups 4 in the battery case 1, the battery core groups 4 may also be installed in the battery case 1 through opening openings formed in the side edges of the battery case 1, and then the openings in the side edges of the battery case 1 are covered by using cover plates; in this way, the battery case 1 does not need to be provided with the cap tip 3 and the case 2, but the battery cell is installed from the side surface of the battery case 1, which is beneficial to replacing or assembling the battery cell 5 in a space with a lower height.

In some embodiments, a cover plate is provided to be rotatably fitted on the side of the battery case 1, the cover plate opening or closing the battery case 1 by rotation; this kind of setting mode also is favorable to making things convenient for the assembly of electric core 5, need not be after the assembly battery, closes the lid with solitary apron again on the opening of battery case 1 side, and the user only need rotate the apron and can close the opening of battery case 1 side, makes things convenient for packing into of electric core 5.

Specifically, a third fastening structure is provided on the side edge of the battery case 1, and a fourth fastening structure that is fastened in cooperation with the third fastening structure is provided on the lid plate; the third fastening structure and the fourth fastening structure are fastened by rotating the cover plate, so that the cover plate can stably cover the battery case 1; the third fastening structure and the fourth fastening structure can be correspondingly arranged into a screw and a screw hole, and the screw is inserted into the screw hole for fastening; in addition, the third fastening structure can be a buckle structure, the fourth fastening structure can be a clamping hole structure, the buckle structure is clamped into the clamping hole for fastening, and the cover plate can be opened by pressing the buckle structure again; in addition, in some embodiments, a spring structure is provided between the cover plate and the battery case 1, the spring structure stretches the cover plate, and when pressure is applied to the cover plate, the cover plate is buckled into the battery case 1; when the buckle structure is pressed, the buckle structure is separated from the clamping hole structure, and the elastic inertia force of the spring structure acts on the cover plate instantly to open the cover plate.

In some embodiments, too many cells 5 need not be disposed in the battery case 1, for example, the battery case 1 is configured to accommodate seven cells 5, but only four cells 5 are actually required; at this time, an inner cylinder 8 for placing the battery cells 5 may be provided, and the size of the inner cylinder 8 is just capable of placing four battery cells 5; therefore, the battery cell 5 is placed in the inner cylinder 8 first, and then the inner cylinder 8 is installed in the battery case 1; in order to avoid shaking caused by the fact that the inner cylinder 8 is smaller than the cavity in the battery case 1, a first buckle structure is arranged on the inner ground on one side of the negative end of the battery case 1, a second buckle structure is arranged on the bottom surface of the outer side of the inner cylinder 8, and when the inner cylinder 8 is installed in the battery case 1, the second buckle structure can buckle the first buckle structure, so that the inner cylinder 8 is stably installed in the battery case 1; the inner cylinder 8 may be square or cylindrical as required, as shown in fig. 4.

It should be noted that, inner cylinders 8 with different sizes may be provided for placing different numbers of battery cells 5; when the required number of the battery cells 5 is large, selecting a large inner cylinder 8 for placing the required number of the battery cells 5; the inner cylinder 8 is made of a conductive material, or the bottom of the inner cylinder 8 is made of a non-conductive material, or an opening structure is arranged at the bottom of the inner cylinder 8, so that the negative level of the battery cell 5 in the inner cylinder 8 can be communicated with the second nickel strap 7; for example, fig. 3 shows a cell group 4 composed of two cells 5, and fig. 4 shows a cell group 4 composed of four cells 5.

In some embodiments, the battery case 1 is a cylinder, and the cylindrical battery case 1 has no water caltrops, so that the use is convenient.

The structure of the battery of the present application is explained below by way of specific examples:

46800 lithium cell, according to the diameter of the cell 46mm, the height 80mm, the last "0" stands for the cylindrical battery; the battery can improve the monomer energy by 5 times, the charge-discharge power by 6 times and the endurance mileage by 16 percent; compared with the existing lithium battery, the lithium battery has the advantages of lower cost, higher energy density and higher upper limit of charge and discharge power; based on the calculation, the energy density of 46800 lithium batteries is about 283Wh/kg (the energy density of battery weight = battery capacity × discharge plateau voltage/weight, the basic unit is Wh/kg); considering other technical improvements, the total capacity of the 46800 cell can reach 30Ah; the energy density should be up to 300Wh/kg.

As a new technology, the technology for directly producing 46800 lithium batteries in China is not mature, and the cost of single-grain assembly is high; but in the current market, the battery has the use requirement; therefore, the battery structure of the present application can be used to meet and meet transitional adaptation market demands, and when the later single-grain production cost is reduced to a sufficiently low level, for example, lower than the cost of the assembled battery of the present application, the processing and manufacturing mode of the single-grain battery can be adopted instead.

In this example, a 46800 cell size housing was used; namely, the battery shell 1 is set to the specification of 46800 battery, then two 21700 battery cores are arranged in the shell 2, and then the cap tip 3 is covered on the shell 2, so that the assembly of the 21700 battery cores is completed; after two 21700 electric cores are assembled, a complete battery product is formed, the electric quantity capable of being released is larger than that of a single 21700 electric core, and the use requirement of a user on large electric quantity can be met.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A battery structure, comprising: the battery pack comprises more than two parallel battery cells or more than two battery cells connected in series; the positive end of the battery case is provided with a first nickel strap, and the negative end of the battery case is provided with a second nickel strap; and under the state that the battery core assembly is arranged in the battery shell, the positive pole of the battery core assembly is connected with the first nickel strap, and the negative pole of the battery core assembly is connected with the second nickel strap.

2. The battery structure according to claim 1, wherein said battery case comprises a cap tip and a case having an opening at one end, said cap tip covering said opening of said case.

3. The battery structure of claim 2, wherein said cap tip is rotatably disposed at an open end of said housing and is adapted to be closed on said housing by rotation of said cap tip.

4. The battery structure of claim 3, wherein the housing is provided with a first fastening structure and the cap tip is provided with a second fastening structure that mates with the first fastening structure.

5. The battery structure of claim 1, wherein the side of the battery case is opened with an opening for installing the battery core pack, and the opening on the side of the battery case is covered by a cover plate.

6. The battery structure according to claim 5, wherein the cap plate is rotatably provided on the side of the battery case.

7. The battery structure according to claim 6, wherein the side of the battery case is provided with a third fastening structure, and the cover plate is provided with a fourth fastening structure which is fastened with the third fastening structure.

8. The battery structure of claim 3, further comprising an inner barrel of electrically conductive material, said battery pack being disposed within said inner barrel; the bottom surface of the negative end in the battery case is provided with a first buckle structure, the bottom surface of the outer side of the inner cylinder is provided with a second buckle structure, and the inner cylinder is stably arranged in the battery case through the buckle connection of the first buckle structure and the second buckle structure.

9. The battery structure according to claim 1, characterized in that the battery case is a cylinder.

10. The battery structure of claim 3, wherein the open end of the housing is provided with a sealing ring.