CN112701341B - Battery and electronic equipment - Google Patents

Battery and electronic equipment Download PDF

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Publication number
CN112701341B
CN112701341B CN202011584269.0A CN202011584269A CN112701341B CN 112701341 B CN112701341 B CN 112701341B CN 202011584269 A CN202011584269 A CN 202011584269A CN 112701341 B CN112701341 B CN 112701341B
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China
Prior art keywords
battery
sealing
shell
crimping
side wall
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CN202011584269.0A
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CN112701341A (en
Inventor
童焰
陈志勇
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Guangdong Mic Power New Energy Co Ltd
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Guangdong Mic Power New Energy Co Ltd
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Priority to CN202011584269.0A priority Critical patent/CN112701341B/en
Publication of CN112701341A publication Critical patent/CN112701341A/en
Priority to PCT/CN2021/139721 priority patent/WO2022143263A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H01M10/0427—Button cells
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The present disclosure relates to a battery and an electronic apparatus. The battery includes: a first housing and a second housing; a part of the second shell is arranged inside the first shell, and a first sealing part is arranged between the first shell and the part of the second shell; a second sealing part is arranged on the outer side wall of the second shell, a gap is formed between the second sealing part and the first sealing part, a conductive part is arranged on the gap, and the conductive part is electrically connected with the second shell at the gap; the first case is provided with a crimping portion, an end portion of at least a part of the crimping portion abuts against the second sealing portion in a first state of the battery, and the crimping portion is arranged to be electrically connectable to the conductive portion in a second state of the battery.

Description

Battery and electronic equipment
Technical Field
The present disclosure relates to the field of battery technologies, and more particularly, to a battery and an electronic device.
Background
Button cells are generally large in diameter and thin in thickness. Button cell on the current market, the battery is inside can form the high pressure when button cell is inside unusual, under high-pressure state, the battery can explode, carries out the pressure release to this kind of condition at present through pressure release modes such as adopting the relief valve and prevents the battery explosion, nevertheless the battery after this kind of pressure release mode still has the electric energy, and the battery still can continuously discharge, and the battery still has safe risk.
Disclosure of Invention
An object of the present disclosure is to provide a battery and an electronic apparatus.
According to a first aspect of the present disclosure, a battery is provided. The battery includes: a first housing and a second housing;
a part of the second shell is arranged inside the first shell, and a first sealing part is arranged between the first shell and the part of the second shell;
a second sealing part is arranged on the outer side wall of the second shell, a gap is formed between the second sealing part and the first sealing part, a conductive part is arranged on the gap, and the conductive part is electrically connected with the second shell at the gap;
the first case is provided with a crimping portion, at least a part of which abuts against the second sealing portion when the battery is in a first state, and the crimping portion is arranged so as to be electrically connectable to the conductive portion when the battery is in a second state.
Optionally, the crimping portion is disposed around the second housing, and the crimping portion and the second sealing portion are abutted to form a sealed cavity.
Optionally, the crimping portion includes a first crimping portion and a second crimping portion connected to the first crimping portion, the first crimping portion abuts against the second sealing portion, and one end of the second crimping portion close to the second sealing portion is a free end.
Optionally, the side wall of the second casing is an annular side wall, the annular side wall includes a first side wall portion and a second side wall portion, the diameter size of the second side wall portion is larger than that of the first side wall portion, and the first side wall portion and the second side wall portion are connected through a transition section.
Optionally, two opposite ends of the first and second sealing portions and the transition section constitute the gap.
Optionally, an extension portion is formed on a side of the first sealing portion away from the second sealing portion, and the extension portion is located between an end portion of the second housing and the bottom wall of the first housing.
Optionally, the conductive part adopts a thermistor.
Optionally, the battery includes a first tab and a second tab, the first tab is electrically connected to the first housing, and the second tab is electrically connected to the second housing.
Optionally, the first tab is welded to the first housing, and the second tab is welded to the second housing.
According to a second aspect of the present disclosure, there is provided an electronic device comprising the battery of the first aspect.
One technical effect of the present disclosure is to provide a battery including a second sealing part and a first sealing part, a gap being formed between the first sealing part and the second sealing part, and a conductive part being disposed on the gap; a curling part is arranged on the first shell of the battery, and the end part of at least part of the curling part is abutted to the second sealing part when the battery is in the first state, so that the conditions of short circuit and the like of the battery are avoided, and the use safety of the battery is not influenced; under the second state of the battery, high voltage is formed inside the battery, an interaction force is generated between the first shell and the second shell along the axial direction of the battery cell, the end part of the crimping part can be electrically connected with the conductive part under the interaction force, the first shell, the conductive part and the second shell can form a closed loop, rapid discharge is realized through the conductive part, and instantaneous overheating caused by short-time large current and the safety of the battery are prevented from being influenced.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a battery according to the present disclosure.
Fig. 2 shows an exploded view of the cell of the present disclosure.
Fig. 3 is a first structural sectional view of the battery of the present disclosure.
Fig. 4 shows a structural cross-sectional view of a battery of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to an embodiment of the present disclosure, a battery is provided. For example, the battery may be a button battery.
Referring to fig. 1 to 4, the battery includes: a first housing 1 and a second housing 2.
A part of the second housing 2 is disposed inside the first housing 1, and a first seal portion 3a is disposed between the first housing 1 and the part of the second housing 2.
A second sealing portion 3b is arranged on the outer side wall of the second housing 2, a gap 10 is formed between the second sealing portion 3b and the first sealing portion 3a, a conductive portion is arranged at the gap 10, and the conductive portion is electrically connected with the second housing 2 at the gap.
The first case 1 is provided with a crimping portion 11, and in a first state of the battery, at least a part of the crimping portion 11 is in contact with the second sealing portion 3b, and in a second state of the battery, the crimping portion 11 is disposed so as to be electrically connectable to the conductive portion.
Specifically, the battery includes a first case 1 and a second case 2, the first case 1 being configured as a first pole of the battery, the second case 2 being configured as a second pole of the battery, for example, the first pole being a positive pole of the battery, the second pole being a negative pole of the battery.
In the embodiment of the present disclosure, a part of the second housing 2 is embedded inside the first housing 1, wherein a first sealing portion 3a is disposed between the first housing 1 and a part of the second housing 2, and the first sealing portion 3a plays a role in insulation and sealing, so as to prevent the inner side wall of the first housing 1 from contacting with a part of the outer side wall of the second housing 2 to cause a battery short circuit, which affects the normal use of the battery. The first sealing portion 3a is fixed between the first housing 1 and a part of the second housing 2 by an insulating paste, for example.
The outer side wall of the second housing 2 is provided with a second sealing portion 3b, a gap 10 is formed between the second sealing portion 3b and the first sealing portion 3a, for example, opposite ends of the first sealing portion 3a and the second sealing portion 3b are not contacted and connected, so as to expose a partial area of the outer side wall of the second housing 2. Wherein the conductive part is arranged at the gap 10 formed by the first sealing part 3a and the second sealing part 3b, for example, the exposed partial area of the outer side wall of the second housing 2 is provided with the conductive part, and the conductive part is electrically connected with the second housing, namely, the conductive part is connected with the second pole of the battery.
In alternative embodiments, the first sealing portion 3a and the second sealing portion 3b may be integrally provided or the first sealing portion 3a and the second sealing portion 3b may be separately provided.
When the first seal portion 3a and the second seal portion 3b are integrally provided to constitute one seal member, the first seal portion 3a and the second seal portion 3b are provided as a whole on the second housing 2, wherein a part of the one seal member constituted by the first seal portion 3a and the second seal portion 3b is hollowed out to form a gap between the first seal portion 3a and the second seal portion 3b, and a conductive portion is provided at the gap.
When the first sealing portion 3a and the second sealing portion 3b are provided on the second housing 2 as separate members, respectively, the first sealing portion 3a and the second sealing portion 3b are provided to face each other with a gap between their facing ends, and a conductive portion is provided at the gap.
The first case 1 is provided with a crimping portion 11, and as shown in fig. 2 to 4, the first case 1 is formed with an open end at which the crimping portion is formed, and the crimping portion 11 extends in the axial direction close to the first case 1 so that the crimping portion 11 of the first case 1 abuts against the second sealing portion 3b in the first state of the battery.
In the first state of the battery, it can be understood that: the battery is in a normal use state, namely the battery is in a normal charging and discharging process. When the battery is in the first state, the end of the crimping portion 11 of the first case 1 abuts against the second sealing portion 3b, that is, the first case 1 and the second case 2 are insulated by the first sealing portion 3a and the second sealing portion 3b, the first pole of the battery and the second pole of the battery are not directly electrically connected, the battery is not in a short-circuited state, and the safety of the battery in use is ensured.
When the battery is in the first state, the conductive part is only electrically connected with the second shell, and a closed loop is not formed, so that no current passes between the second shell and the conductive part, and the battery is prevented from leaking electricity in the use process of the battery.
In the second state of the battery, it can be understood that: the case where the internal pressure of the battery increases, wherein the case where the internal pressure of the battery increases may be caused to include: the battery is in an environment of high temperature or high pressure during the detection process.
Under the condition that the internal pressure of the battery is increased, the first shell 1 and the second shell 2 of the battery generate mutual repulsion acting force under the action of the internal pressure, the internal pressure pushes the second shell 2 to move upwards, the internal pressure pushes the first shell 1 to move downwards, namely, the second sealing part 3b and the crimping part 11 move backwards (the movement directions of the two parts are opposite and far away from each other), the end part of the crimping part 11 can be in a contact-free state with the second sealing part 3b, the crimping part 11 can be in electric contact with a conductive part arranged at the gap 10, one side of the conductive part is electrically connected with the second shell 2, the other side of the conductive part is electrically connected with the first shell 1, the conductive part (an external load), the second shell 2 and the first shell 1 form a closed loop, the electric energy in the battery is released through the conductive part, and the situation that the battery passes through the battery due to the overlarge internal pressure is avoided, so that the battery instantaneously heats.
At present, the battery is decompressed through parts such as a decompression valve to prevent explosion of the battery, but after the battery is decompressed through parts such as a hydraulic valve, electric energy still exists in the battery, the battery still can be discharged through the contact of the first pole of the battery and the second pole of the battery, and the safety risk still exists in the battery.
The battery comprises a second sealing part and a first sealing part, wherein a gap is formed between the first sealing part and the second sealing part, and a conductive part is arranged on the gap; a curling part is arranged on the first shell of the battery, and the end part of at least part of the curling part is abutted to the second sealing part when the battery is in the first state, so that the conditions of short circuit and the like of the battery are avoided, and the use safety of the battery is not influenced; under the second state of the battery, high voltage is formed inside the battery, an interaction force is generated between the first shell and the second shell along the axial direction of the battery cell, the end part of the crimping part can be electrically connected with the conductive part under the interaction force, the first shell, the conductive part and the second shell can form a closed loop, rapid discharge is realized through the conductive part, and the phenomenon that the battery is instantaneously overheated due to short-time heavy current caused by contact discharge between the first pole of the battery and the second pole of the battery, and the safety of the battery is influenced is avoided.
The battery comprises a second sealing part and a first sealing part, a gap is formed between the first sealing part and the second sealing part, when the battery is in a second state, high pressure is formed inside the battery, the first shell and the second shell generate interaction force along the axial direction of the battery cell, the gap can be connected with the external environment when the end part of the crimping part moves to be electrically connected with the conductive part, the pressure relief of the battery is realized through the gap, and the explosion and other conditions of the battery are prevented.
Alternatively, referring to fig. 3, the crimping portions 11 are disposed around the second housing 2, and the crimping portions 11 are abutted against the second sealing portion 3b to form a sealed cavity.
For example, the second sealing portion 3b is sleeved on the outer side of the second housing 2, part of the second housing 2 is disposed on the inner side of the first housing 1, the end portion of the flange portion 11 of the first housing 1 is abutted to the second sealing portion 3b, and the flange portion 11, the gap 10, and two opposite end portions of the first sealing portion 3a and the second sealing portion 3b enclose to form a sealed cavity.
When the battery is in the first state, the crimping part 11 of the first shell 1 is abutted to the second sealing part 3b, so that the first shell 1 is prevented from being in direct contact with the second shell 2, and the battery is prevented from being short-circuited.
In the preferred embodiment, the end of the crimping portion 11 abuts against the lower end section of the second sealing portion 3b in the height direction of the battery, so that the end of the crimping portion 11 is separated from the second sealing portion 3b in the second state of the battery, and the end of the crimping portion 11 is electrically connected to the conductive portion provided at the gap 10.
Alternatively, as shown in fig. 4, the crimping portion 11 includes a first crimping portion 11a and a second crimping portion 11b connected to the first crimping portion 11a, the first crimping portion 11a abuts against the second sealing portion 3b, and one end of the second crimping portion 11b close to the second sealing portion 3b is a free end.
For example, the end of the second crimping portion 11b close to the second sealing portion 3b is a free end, and the end of the second crimping portion 11b close to the second sealing portion 3b is not connected to any member, and the end of the second crimping portion 11b close to the second sealing portion 3b is not in contact with the second sealing portion 3b and is not connected to the second case 2 regardless of whether the battery is in the first state or the second state.
The cavity enclosed by the end parts of the crimping part 11, the gap 10 and the second sealing part 3b which are oppositely arranged is always communicated with the external environment, when the battery is in the first state or in the second state, the cavity communicated with the external environment is convenient for realizing the pressure relief of the battery, and the conditions that the internal pressure of the battery is too high to cause the explosion of the battery and the like are avoided.
Alternatively, as shown in fig. 2 to 4, the sidewall of the second casing 2 is an annular sidewall, the annular sidewall includes a first sidewall 21 and a second sidewall 22, the diameter of the second sidewall 22 is larger than that of the first sidewall 21, and the first sidewall 21 and the second sidewall 22 are connected by a transition section 23.
Further, the two opposite ends of the first sealing portion 3a and the second sealing portion 3b and the transition section 23 constitute the gap 10.
In alternative embodiments, the first sealing portion 3a and the second sealing portion 3b may be integrally provided or the first sealing portion 3a and the second sealing portion 3b may be separately provided.
When the first seal portion 3a and the second seal portion 3b are integrally provided to constitute one seal, the first seal portion 3a and the second seal portion 3b are provided as a whole on the second housing 2, wherein a part of the one seal constituted by the first seal portion 3a and the second seal portion 3b is hollowed out to expose the transition section 23.
When the first seal portion 3a and the second seal portion 3b are provided on the second housing 2 as separate members, respectively, with the first seal portion 3a and the second seal portion 3b being provided oppositely and with a gap between the ends thereof opposite to each other, the transition section 23 is exposed through the gap.
The second housing 2 comprises a side wall and a bottom connected to the side wall, wherein the side wall is an annular side wall, the side wall close to the bottom and directly connected to the bottom is a first side wall 21, the side wall far away from the bottom is a second side wall 22, and the first side wall 21 and the second side wall 22 are connected by a transition section 23.
In the battery assembly, the first side wall 21 is completely embedded inside the first case 1, the first sealing portion 3a covers the second side wall 22, the second sealing portion 3b covers part of the first side wall 21, the first case 1 is curled from the lower end of the transition section 23 to form the curled portion 11, and at least part of the curled portion 11 abuts against the second sealing portion 3b in the first state of the battery.
In the present example, the conductive portion is provided on the transition section 23, and in the second state of the battery, the end portion of the crimping portion 11 can be directly electrically connected to the conductive portion provided on the transition section 23, for example, the structure of the conductive portion matches the structure of the transition section 23, and the end portion of the crimping portion 11 is in contact with and electrically connected to the conductive portion provided on the transition section 23, so that the end portion of the crimping portion 11 is prevented from slipping off the transition section 23, and the reliability of the electrical connection between the end portion of the crimping portion 11 and the conductive portion is ensured.
Optionally, an extension portion 31 is formed on a side of the first sealing portion 3a away from the second sealing portion 3b, and the extension portion 31 is located between an end portion of the second housing 2 and a bottom wall of the first housing 1.
For example, the first sealing portion 3a is formed with an extension portion 31, as shown in fig. 3B, the extension portion 31 covers the end of the second casing 2, that is, the end of the second casing 2 and the bottom wall of the first casing 1 press the extension portion 31, so as to prevent the first casing 1 and the second casing 2 from directly contacting to cause a short circuit of the battery, improve the sealing performance of the whole battery, and avoid liquid leakage.
Referring to fig. 3a, when the battery is in the first state, the crimping portion 11 abuts against the second sealing portion 3b, which in this embodiment avoids the first case 1 and the second case 2 from directly contacting to cause a short circuit of the battery, and simultaneously improves the overall sealing performance of the battery and avoids leakage.
Optionally, the conductive part adopts a thermistor.
For example, the conductive part is disposed at the gap by using a conductive adhesive, and before the conductive part is disposed, in order to improve the connection reliability between the conductive part and the second housing 2, a local area of the second housing 2 is subjected to laser etching or laser ablation. Wherein the local region is formed with the void.
The conductive part can be a negative temperature coefficient part or a positive temperature coefficient part, wherein the negative temperature system part can be an NTC thermistor or a carbonaceous resistor (prepared by pressing a mixture of carbon black, resin, clay and the like and then carrying out heat treatment); wherein the positive temperature coefficient component may be, for example, a PTC thermistor.
The form of the conductive portion is not particularly limited in this example as long as the conductive portion can be electrically connected to the first case 1 and the second case 2, respectively, and can consume electric energy inside the battery in the second state of the battery.
Alternatively, as shown in fig. 2 to 3, the battery includes a first tab 41a and a second tab 41b, the first tab 41a is electrically connected to the first case 11, and the second tab 41b is electrically connected to the second case 2.
Further, the first tab 41a is welded to the first case 11, and the second tab 41b is welded to the second case 2.
For example, a winding core 4 is arranged in the battery, the winding core 4 comprises a first tab 41a, and a first insulating part 5a is arranged between the winding core body and the first tab 41a, so that the conditions of short circuit and the like in the battery are avoided; the first tab 41a is electrically connected to the first case 1 by resistance welding or laser welding.
The winding core 4 comprises a second tab 41b, and a second insulating part 5b is arranged between the winding core body and the second tab 41b, so that the conditions of short circuit and the like in the battery are avoided; the second tab 41b is electrically connected to the second case 2 by resistance welding or laser welding.
According to a second aspect of the present disclosure, there is provided an electronic device comprising the battery of the first aspect. For example, an electronic apparatus includes an apparatus main body, and a battery that supplies power to the electronic apparatus is provided inside the apparatus main body to be electrically connected to the electronic apparatus. For example, the electronic device may be a headset, a watch, etc.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (10)

1. A battery, comprising: a first housing (1) and a second housing (2);
a part of the second shell (2) is arranged inside the first shell (1), and a first sealing part (3a) is arranged between the first shell (1) and the part of the second shell (2);
a second sealing part (3b) is arranged on the outer side wall of the second shell (2), a transition section (23) is formed on the second shell (2), a gap (10) is formed between the second sealing part (3b) and the first sealing part (3a), the gap (10) exposes the transition section (23), and a conductive part is arranged on the transition section (23) and is electrically connected with the transition section (23);
the first shell (1) is provided with a crimping part (11), the battery has a first state and a second state, and the first state is that the battery is in a normal use state; the second state is a state in which the internal pressure of the battery is increased;
at least a part of the crimping portion (11) abuts against the second sealing portion (3b) in the first state of the battery;
the crimping portion (11) is configured to be electrically connectable with the conductive portion in the second state of the battery.
2. The battery according to claim 1, wherein the crimping portions (11) are provided around the second case (2), and the crimping portions (11) are abutted against the second sealing portion (3b) to form a sealed cavity.
3. The battery according to claim 1, wherein the crimping portion (11) comprises a first crimping portion (11a) and a second crimping portion (11b) connected to the first crimping portion (11a), the first crimping portion (11a) abuts against the second sealing portion (3b), and an end of the second crimping portion (11b) adjacent to the second sealing portion (3b) is a free end.
4. The battery according to claim 1, characterized in that the side wall of the second case (2) is an annular side wall comprising a first side wall portion (21) and a second side wall portion (22), the second side wall portion (22) having a diameter dimension greater than the diameter dimension of the first side wall portion (21), the first side wall portion (21) and the second side wall portion (22) being connected by the transition section (23).
5. The battery according to claim 4, wherein the transition section (23) and two opposite ends of the first and second sealing portions (3a, 3b) constitute the gap (10).
6. The battery according to claim 1, wherein an extension portion (31) is formed on a side of the first sealing portion (3a) remote from the second sealing portion (3b), the extension portion (31) being located between an end portion of the second case (2) and a bottom wall of the first case (1).
7. The battery of claim 1, wherein the conductive portion is a thermistor.
8. The battery according to claim 1, characterized in that the battery comprises a first tab (41a) and a second tab (41b), the first tab (41a) being electrically connected with the first case (1) and the second tab (41b) being electrically connected with the second case (2).
9. The battery according to claim 8, wherein the first tab (41a) is welded to the first case (1) and the second tab (41b) is welded to the second case (2).
10. An electronic device comprising a battery according to any one of claims 1-9.
CN202011584269.0A 2020-12-28 2020-12-28 Battery and electronic equipment Active CN112701341B (en)

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CN202011584269.0A CN112701341B (en) 2020-12-28 2020-12-28 Battery and electronic equipment
PCT/CN2021/139721 WO2022143263A1 (en) 2020-12-28 2021-12-20 Battery and electronic device

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