CN211929658U - Battery with a battery cell - Google Patents

Battery with a battery cell Download PDF

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Publication number
CN211929658U
CN211929658U CN202020770072.5U CN202020770072U CN211929658U CN 211929658 U CN211929658 U CN 211929658U CN 202020770072 U CN202020770072 U CN 202020770072U CN 211929658 U CN211929658 U CN 211929658U
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China
Prior art keywords
battery
tab
cell body
support
sheet
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CN202020770072.5U
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Chinese (zh)
Inventor
许德胜
王永旺
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Zhuhai Cosmx Battery Co Ltd
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Zhuhai Cosmx Battery Co Ltd
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Priority to CN202020770072.5U priority Critical patent/CN211929658U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The utility model provides a battery, which comprises a shell and an electric core, wherein the shell comprises a first end cover and a second end cover which are arranged oppositely; the battery cell comprises a battery cell body, a positive electrode lug, a negative electrode lug and a support piece, wherein the battery cell body comprises a first side and a second side which are opposite to each other; the support member may support the positive electrode tab in close contact with the first end cap, and the negative electrode tab in close contact with the second end cap. The pole ear of the battery cell is not required to be connected with the shell, and the pole ear and the shell can be closely attached and contacted through the support of the support piece, so that the process flow of battery assembly is simplified.

Description

Battery with a battery cell
Technical Field
The utility model relates to a lithium ion battery technical field especially relates to a battery.
Background
With the advancement and development of science and technology, miniaturized products such as wearable electronic devices have higher requirements for the size of batteries.
The battery assembly needs to conduct the battery core inside the battery with the external shell, so that the normal work of the battery is realized. In the prior art, the connection is realized by welding the lug of the battery core and the external shell of the battery, and the operation is difficult and the processing technology is complex for the lithium ion battery with small size.
Therefore, the existing battery structure has the problem of complex processing technology.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a battery has solved the more complicated problem of current battery structure processing technology.
In order to achieve the above object, an embodiment of the present invention provides a battery, including:
electric core and casing, wherein:
the shell comprises a first end cover and a second end cover which are oppositely arranged; the battery cell comprises a battery cell body, a positive electrode lug, a negative electrode lug and a support piece, wherein the battery cell body comprises a first side and a second side which are opposite to each other; the support member may support the positive electrode tab in close contact with the first end cap, and may support the negative electrode tab in close contact with the second end cap.
Optionally, the support member is a support sleeve, and the support sleeve is sleeved on the periphery of the battery cell body.
Optionally, the support sleeve is formed with a first flanging part and a second flanging part which are oppositely arranged, the first flanging part can support the positive electrode tab to be in close contact with the first end cover, and the second flanging part can support the negative electrode tab to be in close contact with the second end cover.
Optionally, the support sleeve is an elastic support sleeve, and the elastic support sleeve can generate an elastic support force along the axial direction of the elastic support sleeve.
Optionally, the positive electrode tab includes a first conductive sheet and a first handle portion, the first handle portion is connected to the positive electrode sheet of the cell body, the first conductive sheet is located at the first side, the negative electrode tab includes a second conductive sheet and a second handle portion, the second handle portion is connected to the negative electrode sheet of the cell body, and the second conductive sheet is located at the second side;
the support member may support the first conductive sheet in close contact with the first end cap, and may support the second conductive sheet in close contact with the second end cap.
Optionally, the first handle portion is welded to the positive plate, and the second handle portion is welded to the negative plate.
Optionally, the battery cell body is formed by laminating a positive plate, a negative plate and a diaphragm sheet and then winding the positive plate, the negative plate and the diaphragm sheet, and the diaphragm sheet is located between the positive plate and the negative plate.
Optionally, the separator sheet includes a first separator sheet and a second separator sheet, the first separator sheet is located on the inner side of the positive electrode sheet or the outer side of the negative electrode sheet, and the second separator sheet is located between the positive electrode sheet and the negative electrode sheet.
Optionally, the battery cell body includes a first end and a second end that are relatively far away from each other, the first end is located inside the wound battery cell body, the second end is located outside the wound battery cell body, and the second end is fixed by a fixing adhesive tape.
Optionally, conductive glue is arranged between the first end cover and the positive electrode tab, and conductive glue is arranged between the second end cover and the negative electrode tab.
One of the above technical solutions has the following advantages or beneficial effects:
the embodiment of the utility model provides a battery, including casing and electric core, the casing includes relative first end cover and second end cover that sets up; the battery cell comprises a battery cell body, a positive electrode lug, a negative electrode lug and a support piece, wherein the battery cell body comprises a first side and a second side which are opposite to each other; the support member may support the positive electrode tab in close contact with the first end cap, and the negative electrode tab in close contact with the second end cap. The pole ear of the battery cell is not required to be connected with the shell, and the pole ear and the shell can be closely attached and contacted through the support of the support piece, so that the process flow of battery assembly is simplified.
Drawings
Fig. 1 is one of schematic structural diagrams of a battery cell according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a battery cell according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a positive plate of a battery according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a negative plate of a battery according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a local enlargement of a battery cell body of a battery provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides a battery, including a battery cell 100 and a casing, wherein:
the housing includes oppositely disposed first 210 and second 220 end caps; the battery cell 100 includes a battery cell body 110, a positive tab 120, a negative tab 130, and a support member 140, where the battery cell body 110 includes a first side and a second side opposite to each other, the positive tab 120 is located on the first side, and the negative tab 130 is located on the second side; the support 140 may support the positive electrode tab 120 in close contact with the first end cap 210 and the negative electrode tab 130 in close contact with the second end cap 220.
The housing is made of a metal conductive material, such as an aluminum-manganese alloy, and the supporting member 140 is made of an insulating material, and may be a rubber sleeve, without any limitation. And is not limited herein.
In the embodiment of the present invention, as shown in fig. 1, the positive tab 120 is led out from the positive plate of the battery cell body 110; and as shown in fig. 2, a negative tab 130 is led out from the negative plate of the cell body 110. In the battery assembly, as shown in fig. 3, the positive electrode tab 120 and the negative electrode tab 130 may be folded toward the cell body 110 and then may be inserted into the case. In this way, the support member 140 may support the positive electrode tab 120 to be in close contact with the first end cap 210 of the casing 200, and the support member 140 may support the negative electrode tab 130 to be in close contact with the second end cap 220 of the casing, thereby achieving electrical conduction between the tabs of the battery cell 100 and the casing.
Compare and be connected the utmost point ear of electric core and casing among the prior art, the embodiment of the utility model provides a battery, accessible support piece 140's support makes electric core 100's utmost point ear and casing contact of closely laminating, realizes the electric conductance between utmost point ear and the casing and leads to. Meanwhile, the internal resistance of the battery can be reduced by reducing welding, and the performance of the battery is improved.
Optionally, the supporting member 140 is a supporting sleeve, and the supporting sleeve is sleeved on the periphery of the battery cell body 110.
In this embodiment, the supporting member 140 of the supporting sleeve structure may be directly sleeved on the periphery of the battery cell body 110, the insulating material of the supporting sleeve may protect the battery cell body 110, the outer side of the battery cell body 110 may not contact with the casing, the short circuit risk of the battery is reduced, and the manufacturing process of the battery is simplified.
Further, as shown in fig. 1 and 2, the support sleeve is formed with a first burring part 141 and a second burring part 142 which are oppositely disposed, the first burring part 141 may support the positive electrode tab 120 to be in close contact with the first end cap 210, and the second burring part 142 may support the negative electrode tab 130 to be in close contact with the second end cap 220.
In this embodiment, the support sleeve is formed with a first flange portion 141 and a second flange portion 142 which are oppositely disposed, as shown in fig. 4, the positive electrode tab 120 is located between the first flange portion 141 and the first end cap 210, and the negative electrode tab 130 is located between the second flange portion 142 and the second end cap 220. The first flanging portion 141 can support the positive electrode tab 120 to be in close contact with the first end cap 210, and can prevent the positive electrode tab 120 from being in close contact with the negative electrode plate in the cell body 110, and similarly, the second flanging portion 142 can support the negative electrode tab 130 to be in close contact with the second end cap 220, and can prevent the negative electrode tab 130 from being in close contact with the positive electrode plate in the cell body 110, thereby reducing the risk of battery short circuit.
Furthermore, the supporting sleeve is an elastic supporting sleeve which can generate elastic supporting force along the axial direction of the elastic supporting sleeve. Under the supporting force, the positive electrode tab 120 can be tightly attached to the first end cap 210, and the negative electrode tab 130 can be tightly attached to the second end cap 220, so that the stability of the conductivity of the battery is further improved.
Optionally, as shown in fig. 4, the positive tab 120 includes a first conducting strip 121 and a first handle portion 122, the first handle portion 122 is connected to the positive tab of the cell body 110, the first conducting strip 121 is located at the first side, as shown in fig. 5, the negative tab 130 includes a second conducting strip 131 and a second handle portion 132, the second handle portion 132 is connected to the negative tab of the cell body 110, and the second conducting strip 131 is located at the second side;
the supporter 140 may support the first conductive sheet 121 in close contact with the first cap 210, and may support the second conductive sheet 131 in close contact with the second cap 220.
In this embodiment, when the battery is assembled, as shown in fig. 3, the first conductive sheet 121 may be bent along its connection with the first handle 122, and the second conductive sheet 131 may be folded along its connection with the second handle 132 and then inserted into the case. In this way, the support member 140 may support the first conductive sheet 121 to be in close contact with the first end cap 210, and the support member 140 may support the second conductive sheet 131 to be in close contact with the second end cap 220, so that electrical conduction between the tab of the battery cell 100 and the casing is achieved.
In this embodiment, the contact area between the first conductive sheet 121 and the second conductive sheet 131 in sheet form and the first end cap 210 and the second end cap 220 is large, and the stability of the conductive performance of the battery is further improved. In addition, the design of the first and second handle portions 122 and 132 facilitates the connection of the positive tab 120 with the positive plate and the connection of the negative tab 130 with the negative plate; moreover, the handle structure can further support the conductive sheets, and meanwhile, the first handle portion 122 has a support height that can further prevent the first conductive sheet 121 from contacting the negative electrode sheet in the cell body 110, and the second handle portion 132 has a support height that can further prevent the second conductive sheet 131 from contacting the positive electrode sheet in the cell body 110.
Further, the first handle portion 122 is welded to the positive electrode tab, and the second handle portion 132 is welded to the negative electrode tab. Welding may improve the stability of the connection between the first handle portion 122 and the positive electrode tab, and the second handle portion 132 and the negative electrode tab.
Optionally, as shown in fig. 6, the cell body 110 is formed by laminating and winding a positive plate 111, a negative plate 112, and a separator plate 113, where the separator plate 113 is located between the positive plate 111 and the negative plate 112.
The diaphragm sheet 113 is a layer of diaphragm made of insulating material, and can isolate the positive plate 111 from the negative plate 112 to prevent short circuit of the battery, and at the same time, ions in the battery electrolyte can freely pass between the positive and negative plates to realize charging and discharging of the battery.
In this embodiment, the cell body 110 is formed by laminating and winding a positive electrode sheet 111, a negative electrode sheet 112, and a separator sheet 113. Specifically, the positive electrode sheet 111, the separator sheet 113, and the negative electrode sheet 112 may be stacked in this order from inside to outside and wound to form the cell body 110, or the negative electrode sheet 112, the separator sheet 113, and the positive electrode sheet 111 may be stacked in this order from inside to outside and wound to form the cell body 110. When the volume of the battery is constant, the battery cell body 110 formed by winding can improve the capacity of the battery and the safety of the battery.
Further, the separator 113 includes a first separator 1131 and a second separator 1132, the first separator 1131 is located on the inner side of the positive electrode tab 111 or the outer side of the negative electrode tab 112, and the second separator 1132 is located between the positive electrode tab 111 and the negative electrode tab 112.
In this embodiment, the positive electrode tab 111, the diaphragm tab 113, and the negative electrode tab 112 are sequentially stacked from inside to outside, and are wound to form the electric core body 110, the first diaphragm tab 1131 is located inside the positive electrode tab 111, as shown in fig. 6, the first diaphragm tab 1131 may also be located outside the negative electrode tab 112 (not shown in the figure), and in addition, the second diaphragm tab 1132 located between the positive electrode tab 111 and the negative electrode tab 112 is provided, compared with the diaphragm tab arranged between each adjacent set of positive electrode tab and negative electrode tab after winding, the two layers of diaphragm tabs can ensure that there is a diaphragm insulation between the adjacent positive electrode tab and negative electrode tab, thereby simplifying the manufacturing process of the electric core body 110, and also reducing the manufacturing cost of the battery.
It can be understood that, when the negative electrode sheet, the separator sheet, and the positive electrode sheet are sequentially stacked from inside to outside and wound to form the electrical core body 110, the first separator sheet may be located inside the negative electrode sheet or outside the positive electrode sheet, and the second separator sheet located between the positive electrode sheet and the negative electrode sheet may be added to achieve the same technical effects, which is not described herein again.
Further, as shown in fig. 1, the cell body 110 includes a first end and a second end that are relatively far away from each other, the first end is located inside the wound cell body 110, the second end is located outside the wound cell body 110, and the second end is fixed by the fixing adhesive tape 300.
In this embodiment, the winding-formed battery cell body 110 includes a first end located at the center of the battery cell body 110, and a second end located at the outer side of the battery cell body 110. As shown in fig. 1, fixing the second end of the battery cell body 110 by the fixing adhesive tape 300 can maintain the winding shape of the battery cell body 110, and improve the stability of the battery structure.
It can be understood that, since the cell body 110 is formed by laminating and winding the positive electrode sheet 111, the negative electrode sheet 112 and the separator sheet 113, the first end herein also refers to the first end of the positive electrode sheet 111, the first end of the negative electrode sheet 112 and the first end of the separator sheet 113; similarly, the second end herein also refers to the second end of the positive electrode tab 111, the second end of the negative electrode tab 112, and the second end of the separator tab 113.
Optionally, conductive glue is disposed between the first end cap 210 and the positive electrode tab 120, and conductive glue is disposed between the second end cap 220 and the negative electrode tab 130.
In this embodiment, on the basis of the contact and attachment of the first end cap 210 and the positive electrode tab 120 and the contact and attachment of the second end cap 220 and the negative electrode tab 130, the first end cap 210 and the positive electrode tab 120 and the second end cap 220 and the negative electrode tab 130 are bonded by using the conductive glue, so that the conductivity between the tabs of the battery cell 100 and the casing is further improved, and the performance of the battery is further improved.
To sum up, the embodiment of the present invention provides a battery, including electric core 100 and casing, wherein: the housing includes oppositely disposed first 210 and second 220 end caps; the battery cell 100 includes a battery cell body 110, a positive tab 120, a negative tab 130, and a support member 140, where the battery cell body 110 includes a first side and a second side opposite to each other, the positive tab 120 is located on the first side, and the negative tab 130 is located on the second side; the support 140 may support the positive electrode tab 120 in close contact with the first end cap 210 and the negative electrode tab 130 in close contact with the second end cap 220. The tab of the battery cell 100 and the casing do not need to be connected, and the tab and the casing can be closely attached and contacted through the support of the support member 140, so that the process flow of battery assembly is simplified.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A battery, comprising a cell and a housing, wherein:
the shell comprises a first end cover and a second end cover which are oppositely arranged; the battery cell comprises a battery cell body, a positive electrode lug, a negative electrode lug and a support piece, wherein the battery cell body comprises a first side and a second side which are opposite to each other; the support member may support the positive electrode tab in close contact with the first end cap, and may support the negative electrode tab in close contact with the second end cap.
2. The battery of claim 1, wherein the supporting member is a supporting sleeve, and the supporting sleeve is sleeved on the periphery of the cell body.
3. The battery of claim 2, wherein the support sleeve is formed with first and second opposing crimping portions, the first crimping portion supporting the positive electrode tab in close contact with the first end cap, and the second crimping portion supporting the negative electrode tab in close contact with the second end cap.
4. The battery according to claim 3, wherein the support sleeve is an elastic support sleeve that generates an elastic support force in an axial direction thereof.
5. The battery of claim 1, wherein the positive tab comprises a first conductive sheet and a first handle portion, the first handle portion is connected to the positive tab of the cell body, the first conductive sheet is located at the first side, the negative tab comprises a second conductive sheet and a second handle portion, the second handle portion is connected to the negative tab of the cell body, and the second conductive sheet is located at the second side;
the support member may support the first conductive sheet in close contact with the first end cap, and may support the second conductive sheet in close contact with the second end cap.
6. The battery of claim 5, wherein the first shank portion is welded to the positive tab and the second shank portion is welded to the negative tab.
7. The battery of claim 1, wherein the cell body is formed by laminating and winding a positive plate, a negative plate and a separator plate, and the separator plate is located between the positive plate and the negative plate.
8. The battery according to claim 7, wherein the separator sheet includes a first separator sheet and a second separator sheet, the first separator sheet being located on an inner side of the positive electrode sheet or an outer side of the negative electrode sheet, the second separator sheet being located between the positive electrode sheet and the negative electrode sheet.
9. The battery of claim 7, wherein the cell body comprises a first end and a second end that are relatively far away, the first end is located inside the wound cell body, the second end is located outside the wound cell body, and the second end is fixed by a fixing adhesive tape.
10. The battery of claim 1, wherein a conductive glue is disposed between the first end cap and the positive tab, and a conductive glue is disposed between the second end cap and the negative tab.
CN202020770072.5U 2020-05-11 2020-05-11 Battery with a battery cell Active CN211929658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020770072.5U CN211929658U (en) 2020-05-11 2020-05-11 Battery with a battery cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020770072.5U CN211929658U (en) 2020-05-11 2020-05-11 Battery with a battery cell

Publications (1)

Publication Number Publication Date
CN211929658U true CN211929658U (en) 2020-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020770072.5U Active CN211929658U (en) 2020-05-11 2020-05-11 Battery with a battery cell

Country Status (1)

Country Link
CN (1) CN211929658U (en)

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