CN218498223U

CN218498223U - Battery with a battery cell

Info

Publication number: CN218498223U
Application number: CN202221657672.6U
Authority: CN
Inventors: 邹伟华; 傅永生
Original assignee: Shenzhen Xtar Electronics Co ltd
Current assignee: Shenzhen Xtar Electronics Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-02-17
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to a battery manufacturing field, especially a battery, the battery includes: the battery comprises a shell, a battery cell, a positive electrode, a negative electrode, a heat-resistant interlayer and a heat-shrinkable sleeve; the battery cell is arranged in the shell, and the positive electrode and the negative electrode are respectively connected with the battery cell; one end of the shell is provided with a rolling groove so that the battery cell is fixed in the shell; the heat-resistant interlayer is sleeved on the shell, the heat-shrinkable sleeve is sleeved on the heat-resistant interlayer, and the heat-resistant interlayer covers the rolling groove. The problem of appearance defects caused by shrinkage of the heat-shrinkable tubing at the rolling groove is solved through shielding of the heat-resistant interlayer on the rolling groove and the supporting effect of the heat-resistant interlayer on the heat-shrinkable tubing.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery manufacturing field, especially a battery.

Background

The battery is used as an energy storage device, is closely related to the life of people, and can not be used when the battery is small as a remote controller or when the battery is large as an electric new energy automobile. With the continuous development of scientific technology, the existing battery types and related brands are not sufficient.

At present, cylindrical batteries on the market have a circle of grooves on a battery shell close to one end of a battery anode due to the limitation of processes such as processing and manufacturing. Because the relevant information of the battery is required to be marked for batteries of different types and categories, a coating layer is sleeved on the steel shell of the battery.

The wrapping layer on the steel shell of the battery can be sunken and contracted towards the inside of the groove, so that the appearance of the whole battery is not attractive, and certain appearance defects exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a battery, solved the parcel layer ingeniously and can sunken shrink the appearance defects problem that produces inside the recess.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model discloses a battery, battery includes: the battery comprises a shell, a battery cell, a positive electrode, a negative electrode, a heat-resistant interlayer and a heat-shrinkable sleeve; the battery cell is arranged in the shell, and the positive electrode and the negative electrode are respectively connected with the battery cell; one end of the shell is provided with a rolling groove so that the battery cell is fixed in the shell; the heat-resistant interlayer is sleeved on the shell, the heat-shrinkable sleeve is sleeved on the heat-resistant interlayer, and the heat-resistant interlayer covers the rolling groove.

Optionally, the battery further comprises a PCB board, a positive connector and a negative connector; one end of the heat-resistant interlayer extends out of the extension part from one end of the shell, and the extension part encloses an installation cavity; a battery protection circuit is arranged on the PCB, and the PCB is arranged in the mounting cavity; the positive electrode connecting piece is electrically connected with the PCB and the positive electrode respectively, and the negative electrode connecting piece is electrically connected with the PCB and the negative electrode respectively.

Optionally, the thickness of the extension is greater than the thickness of the rest of the heat resistant barrier layer except for the extension.

Optionally, the battery further comprises a PCB board support; the PCB board support is arranged in the mounting cavity, and the PCB board is arranged on the PCB board support.

Optionally, the battery further comprises a positive electrode cap, and the positive electrode cap is arranged on the PCB and electrically connected with the positive electrode connecting piece through the PCB.

Optionally, the heat shrinkage bush extends from the extension side wall to the PCB and covers the PCB; the heat-shrinkable sleeve part corresponding to the PCB is provided with a hole, and the positive electrode cap is positioned in the hole.

Optionally, the battery further comprises a separation blade, the separation blade is arranged between the PCB and the heat-resistant separation layer, and the separation blade is used for shielding and protecting the PCB.

Optionally, the housing may be electrically conductive, the negative connector is connected to the housing, and the housing is electrically connected to the negative electrode.

Optionally, a mounting groove is provided on the PCB support, and the PCB is mounted in the mounting groove.

Optionally, an avoiding opening is further formed in the PCB support, and the negative electrode connecting piece penetrates through the avoiding opening to be electrically connected with the PCB.

The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses increased the heat-resisting interlayer of one deck between battery case and heat shrinkable sleeve, through the heat-resisting interlayer to the rolling groove shelter from with heat-resisting interlayer to heat shrinkable sleeve's supporting role, solved because of the appearance defect problem that heat shrinkable sleeve leads to in rolling groove department shrink.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic diagram of a battery structure provided by the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural view of an installation cavity provided by the present invention;

fig. 4 is a schematic structural view of a PCB board support provided by the present invention;

fig. 5 is the utility model provides a pair of PCB board support structure schematic diagram

Fig. 6 is a schematic structural view of a spacer according to the present invention;

fig. 7 is a schematic structural view of a spacer according to the present invention.

In the figure: 110-shell, 111-rolling groove, 120-battery core, 130-anode, 140-cathode, 150-heat-resistant interlayer, 160-heat-shrinkable sleeve, 170-PCB, 171-installation groove, 172-avoidance opening, 180-PCB support, 190-anode connecting piece, 200-cathode connecting piece, 210-anode cap and 220-separation piece.

Detailed Description

Due to the limitation of processes such as processing and manufacturing, a circle of groove is formed in a battery shell close to one end of a battery anode. Because the related information of the batteries of different types and categories needs to be marked, a coating layer is sleeved on the steel shell of the battery.

The event the utility model provides a battery has increased the heat-resisting interlayer of one deck between battery housing and heat shrinkable tube, through the heat-resisting interlayer to the rolling groove shelter from with heat-resisting interlayer to heat shrinkable tube's supporting role, solved because of the appearance defect problem that heat shrinkable tube leads to in rolling groove department's shrink.

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of a battery structure provided by the present invention, fig. 2 is a schematic diagram of a portion a in fig. 1 in a partially enlarged manner, and fig. 3 is a schematic diagram of an installation cavity provided by the present invention; the battery includes: the battery comprises a shell 110, a battery cell 120, a positive electrode 130, a negative electrode 140, a heat-resistant interlayer 150 and a heat-shrinkable sleeve 160; the battery cell 120 is disposed in the casing 110, and the positive electrode 130 and the negative electrode 140 are respectively connected to the battery cell 120; one end of the casing 110 is provided with a rolling groove 111 so as to fix the battery cell 120 in the casing 110; the heat-resistant interlayer 150 is sleeved on the shell 110, the heat-shrinkable sleeve 160 is sleeved on the heat-resistant interlayer 150, and the heat-resistant interlayer 150 covers the rolling groove 111.

The heat-resistant interlayer 150 shields the rolling groove 111 on the shell 110, and at the heat-shrinkable processing temperature of the heat-shrinkable sleeve 160, the heat-resistant interlayer 150 cannot shrink due to heating, so that the heat-shrinkable sleeve 160 can be supported, the problem that the heat-shrinkable sleeve 160 shrinks along with the inward sinking of the rolling groove 111 is avoided, and the problem of appearance defects of the battery is avoided.

In an alternative embodiment, the battery further comprises a PCB board 170, a positive connector 190 and a negative connector 200; one end of the heat resistant interlayer 150 extends out of an extension part 151 from one end of the shell 110, and the extension part 151 encloses a mounting cavity; a battery protection circuit is arranged on the PCB 170, and the PCB 170 is arranged in the mounting cavity; the positive electrode connecting member 190 is electrically connected to the PCB 170 and the positive electrode 130, respectively, and the negative electrode connecting member 200 is electrically connected to the PCB 170 and the negative electrode 140, respectively.

The positive electrode connector 190 and the negative electrode connector 200 may be nickel tapes, copper-nickel alloys, or the like. The materials of the positive electrode connection member 190 and the negative electrode connection member 200 are not particularly limited in the embodiments of the present application.

The battery protection circuit arranged on the PCB 170 can protect the charging and discharging process of the battery and prevent the overcharge, overcurrent, overdischarge and short circuit of the battery; the safety of the battery in the using process can be improved.

Specifically, the thickness of the extension 151 may be greater than the thickness of the remaining portion of the heat resistant interlayer 150 except for the extension 151, so that the wall strength of the extension 151 is enhanced, and the internal structure of the battery can be protected to a certain extent.

Further, referring to fig. 1, fig. 4 and fig. 5 are schematic structural diagrams of a PCB board support provided by the present invention. The battery further includes a PCB bracket 180, the PCB bracket 180 is mounted in the mounting cavity, and the PCB 170 is mounted on the PCB bracket 180.

Specifically, the PCB bracket 180 is provided with a mounting groove 181, and the PCB board 180 is seated in the mounting groove 181; the PCB support 180 is further provided with an avoiding opening 182, and the negative electrode connector 200 passes through the avoiding opening 182 to be electrically connected with the PCB 170. The installation of the installation groove 181 can enable the installation of the PCB to be more stable and convenient; the provision of the relief opening 182 facilitates the connection between the negative connector 200 and the PCB 170.

Further, the battery further includes a positive electrode cap 210, and the positive electrode cap 210 is disposed on the PCB 170 and electrically connected to the positive electrode connection member 190 through the PCB 170.

Further, the heat shrink tubing 160 extends from the sidewall of the extension 151 to the PCB 170, and covers the PCB 170; the portion of heat shrink 160 corresponding to PCB 170 is perforated with a positive cap 210 positioned in the opening. The covering of the heat shrinkable tube 160 makes the appearance of the battery more beautiful and protects the extension 151 and the PCB 170.

Further, fig. 6 and fig. 7 are schematic structural views of a spacer according to the present invention; as can be seen from fig. 1, 6 and 7, the battery further includes a barrier sheet 220, the barrier sheet 220 is disposed between the PCB 170 and the heat-resistant barrier layer 160, and the barrier sheet 220 is used for shielding and protecting the PCB 170 from exposing the PCB 170 from the opening of the heat shrinkage bush 160.

The separation blocking sheet 220 reduces the contact between the PCB 170 and the outside, and relieves the problems of oxidization, scratch and the like of the PCB 170, so that the service life of the PCB 170 can be prolonged; in addition, when the heat-shrinkable tube 160 fails to completely cover the gap of the positive electrode cap 210 due to a process problem, the separation blade 220 can effectively shield the inside of the battery, so that the appearance of the battery is more attractive.

Further, the case 110 may be conductive, the negative electrode connector 190 is connected to the case 110, and the case 110 is electrically connected to the negative electrode 140.

The thickness of the heat resistant barrier layer 150 may be as small as possible; the effect of the thickness of the heat resistant separator layer 150 on the overall size of the battery can be reduced while ensuring that the heat resistant separator layer 150 can perform its corresponding function. However, the thickness of the heat resistant barrier layer 150 is not particularly limited in the embodiments of the present application.

In addition, it should be noted that the material of the heat-resistant interlayer 150 may be common metal materials such as copper foil, aluminum foil, etc., and has the characteristics of long service life, easy processing and operation, low cost, etc., so as to facilitate popularization and application in actual production.

The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Within the scope of the technical idea of the present invention, various modifications and alterations can be made, and any person skilled in the art can make modifications, amendments or equivalent replacements according to the above description, all belonging to the protection scope of the present invention.

Claims

1. A battery, comprising: the battery comprises a shell, a battery cell, a positive electrode, a negative electrode, a heat-resistant interlayer and a heat-shrinkable sleeve; the battery cell is arranged in the shell, and the positive electrode and the negative electrode are respectively connected with the battery cell; one end of the shell is provided with a rolling groove so as to fix the battery cell in the shell; the heat-resistant interlayer is sleeved on the shell, the heat-shrinkable sleeve is sleeved on the heat-resistant interlayer, and the heat-resistant interlayer covers the rolling groove.

2. The battery of claim 1, further comprising a PCB board, a positive connector and a negative connector; one end of the heat-resistant interlayer extends out of the extension part from one end of the shell, and the extension part encloses an installation cavity; a battery protection circuit is arranged on the PCB, and the PCB is arranged in the mounting cavity; the positive connecting piece is respectively and electrically connected with the PCB and the positive pole, and the negative connecting piece is respectively and electrically connected with the PCB and the negative pole.

3. The battery of claim 2, wherein the extension has a thickness greater than a thickness of a remaining portion of the heat resistant barrier layer other than the extension.

4. The battery of claim 2, further comprising a PCB board bracket mounted in the mounting cavity, the PCB board being mounted on the PCB board bracket.

5. The battery of claim 2, further comprising a positive electrode cap disposed on the PCB and electrically connected to the positive electrode connector through the PCB.

6. The battery of claim 5, wherein the heat shrink sleeve extends from the extension sidewall to the PCB and covers the PCB; the heat-shrinkable sleeve part corresponding to the PCB is provided with a hole, and the positive electrode cap is positioned in the hole.

7. The battery of claim 5, further comprising a barrier sheet disposed between the PCB board and the heat resistant barrier layer, the barrier sheet for shielding and protecting the PCB board.

8. The battery of claim 4, wherein the case is electrically conductive, the negative connector is connected to the case, and the case is electrically connected to the negative electrode.

9. The battery of claim 4, wherein the PCB bracket is provided with a mounting groove, and the PCB is disposed in the mounting groove.

10. The battery of claim 8, wherein the PCB support is further provided with an avoiding opening, and the negative connecting member passes through the avoiding opening to be electrically connected with the PCB.