CN218731160U - Battery core and soft package battery - Google Patents
Battery core and soft package battery Download PDFInfo
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- CN218731160U CN218731160U CN202222830619.8U CN202222830619U CN218731160U CN 218731160 U CN218731160 U CN 218731160U CN 202222830619 U CN202222830619 U CN 202222830619U CN 218731160 U CN218731160 U CN 218731160U
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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
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Abstract
The utility model provides an electric core and a soft package battery, wherein a positive pole lug of the electric core is connected with a negative pole lug through an external short circuit structure, and the external short circuit structure comprises a first conductive piece connected with the positive pole lug and a second conductive piece connected with the negative pole lug; the first conductive piece and the second conductive piece are connected through an insulating polymer layer, and after the insulating polymer layer is melted and dripped, the first conductive piece and the second conductive piece are lapped through the action of gravity to form electric connection; the battery short circuit accident in the battery is changed into an external short circuit by arranging the external short circuit structure, so that the thermal runaway speed of the battery is slowed down, and the safety of the battery is improved.
Description
Technical Field
The utility model belongs to the technical field of secondary battery, a electric core and laminate polymer battery are related to.
Background
Secondary batteries, especially lithium ion batteries, are widely used in the fields of consumer electronics, new energy vehicles, energy storage, and the like, due to their advantages of high energy density, long cycle life, and the like. With the popularization of new energy products, the safety performance of batteries is widely concerned, and in the use or test process of common batteries, short circuit in the batteries can be caused due to the impact action of external force or the penetration of foreign matters, so that the risk of fire and explosion is increased, and personal injury accidents are easily caused; therefore, improving the safety of the battery in the above scenario is a problem that is focused and urgently needs to be solved in the industry.
CN114203955A discloses an electric core and a battery, the electric core includes a pole piece and a phase change medium, wherein the pole piece includes a current collector, the current collector includes a paste coating area and a hollow foil area, and a tab is disposed in the hollow foil area and extends toward the edge of the current collector to protrude out of the current collector; the phase change medium is positioned on the surface of one side, away from the current collector, of the lug, and/or the phase change medium is positioned on the surface of one side, away from the lug, of the current collector; when the phase change medium is heated to reach the deformation temperature, the phase change medium breaks the connection between the tab and the current collector. The utility model discloses a set up the phase change medium on the pole piece, when the outer short circuit of battery reaches the deformation temperature of phase change medium, the phase change medium breaks off the connection between utmost point ear and the current collector, makes utmost point ear and current collector be discontinuous state, cuts off the route, prevents the electric core rapid heat production, avoids the battery to take place the thermal runaway, has promoted the security of battery.
CN108598355A discloses a secondary battery connecting sheet, which includes a pole connecting section, a pole lug connecting section, an external short circuit connecting section, a first bending section, a second bending section and an overcurrent fusing protection part; the overcurrent fusing protection part is of a fuse hole, a fuse cavity, an easily-fusible strip or an easily-fusible piece structure. When the battery is in short circuit, the whole circuit generates a large current instantly, so that high-temperature fusing is firstly generated at the part, and the function of protecting the circuit is achieved.
CN103151489A discloses a hard-shell power battery, which is provided with a cell protection frame, and comprises a support plate and non-conductive supports installed at two sides of the support plate, wherein a bare cell is accommodated in an accommodating area enclosed by the support plate and the supports of the cell protection frame, the bare cell and the cell protection frame are installed in a conductive shell together, a main body of the support plate is made of a conductive material, and the conductive material of the support plate is electrically connected with a pole tab of the bare cell; the conductive shell is electrically connected with the other pole lug of the naked electric core; the support is provided with a through groove at the corner connected with the support plate, and when the conductive shell deforms, the conductive shell is contacted with the conductive material at the through groove to enable the battery to be in short circuit. The utility model discloses a do not additionally increase mechanical device in power battery, but through seting up the wearing groove on the support, when making power battery pressurized lead to the casing to warp, the casing contacts and realizes the outer short circuit of power battery with the conducting material who wears groove department, releases electric core energy and reduces self voltage, has promoted the security when power battery receives the extrusion greatly.
The scheme can effectively improve the safety of the battery, but no matter a temperature-sensitive phase change deformation component is added, the structural design of multi-region and fusing protection is carried out on the connecting sheet, or a protective frame and other devices are additionally arranged, so that the structure is relatively complex and high in cost, and large-scale production and application are not facilitated; therefore, a new technical scheme which is simple and easy to implement is needed, the safety of the battery is effectively improved, the cost is reduced, and the battery is suitable for large-scale production and application.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an electric core and a soft package battery, wherein a positive electrode tab of the electric core is connected with a negative electrode tab through an external short circuit structure, and the external short circuit structure comprises a first conductive piece connected with the positive electrode tab and a second conductive piece connected with the negative electrode tab; the first conductive piece and the second conductive piece are connected through an insulating polymer layer, and after the insulating polymer layer is melted and dripped, the first conductive piece and the second conductive piece are lapped through the action of gravity to form electric connection; the battery short circuit accident in the battery is changed into an external short circuit by arranging the external short circuit structure, so that the thermal runaway speed of the battery is slowed down, and the safety of the battery is improved.
To achieve the purpose, the utility model adopts the following technical proposal:
in a first aspect, the utility model provides an electrical core, which comprises a positive pole piece provided with a positive pole tab, a negative pole piece provided with a negative pole tab, and an isolating film arranged between the positive pole piece and the negative pole piece;
the positive electrode lug is connected with the negative electrode lug through an external short circuit structure, and the external short circuit structure comprises a first conductive piece connected with the positive electrode lug and a second conductive piece connected with the negative electrode lug; the first conductive piece and the second conductive piece are connected through an insulating polymer layer, and after the insulating polymer layer is melted and drips, the first conductive piece and the second conductive piece are overlapped under the action of gravity to form electric connection.
The utility model aims to provide a through set up the outer short circuit structure that has "switch" effect between anodal utmost point ear and negative pole utmost point ear for when the short circuit causes thermal runaway including electric core, can trigger this outer short circuit structure, make it form the route and make electric connection between anodal utmost point ear and the negative pole utmost point ear, cause outer short circuit. The realization of "switch" function is realized through setting up high temperature melting's insulating high-molecular layer in outer short circuit structure, and the battery intensification that the interior short circuit arouses can melt insulating high-molecular layer, and at this moment, has lost the isolation of insulating high-molecular layer between first electrically conductive piece and the second electrically conductive piece, and through the action of gravity overlap joint together, forms outer short circuit. When electric core changed into outer short circuit by interior short circuit accident, it was too high too fast to effectively avoid battery temperature to heat up, has effectively slowed down thermal runaway's speed, promptly, the utility model discloses a set up simple and easy, low cost's outer short circuit structure has improved the security performance of electric core effectively.
The following is a preferred embodiment of the present invention, but is not intended to limit the scope of the invention. Through following technical scheme, can reach and realize better the utility model discloses a technical purpose and beneficial effect.
As a preferred technical solution of the present invention, one end of the first conductive member contacts with the positive electrode tab, and the other end extends toward a direction close to the negative electrode tab; one end of the second conductive piece is in contact with the negative electrode tab, and the other end of the second conductive piece extends towards the direction close to the positive electrode tab;
the first conductive piece and the second conductive piece are crossed and overlapped between the anode tab and the cathode tab, so that the first conductive piece is provided with a first overlapping area, the second conductive piece is provided with a second overlapping area, and the first overlapping area is connected with the second overlapping area through the insulating polymer layer;
after the insulating polymer layer is melted, the first conductive piece is contacted with the second conductive piece, so that the first lap joint area is lapped with the second lap joint area to form electric connection.
As the preferred technical scheme of the utility model, set up first overlap joint district between the second overlap joint district the contained angle between insulating high molecular layer and the horizontal plane is less than 90, for example 15, 30, 45, 60, 70, 80 etc..
As the utility model discloses preferred technical scheme, first overlap joint district reaches the surface in second overlap joint district all is provided with the barb structure, the highly being less than of barb structure half of the thickness on insulating high polymer layer.
In order to accelerate the melting speed of the insulating polymer layer during the internal short circuit, the surfaces of the first bridging region and the second bridging region are preferably formed with surface structures with certain roughness, such as barb structures, so that the contact with the insulating polymer layer is increased by increasing the specific surface area, and the heat transfer is accelerated; however, it should be ensured that the respective surface structures of the first overlap region and the second overlap region do not contact themselves and directly cause an external short circuit, and therefore the respective thicknesses need to be at least less than half of the thickness of the insulating polymer layer.
In a preferred embodiment of the present invention, the insulating polymer layer is converted into a fluid when the melting point of the insulating polymer layer is 130 to 170 ℃ and/or 130 to 170 ℃, for example, 130 ℃, 135 ℃, 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃ or 170 ℃, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range of values are also applicable.
In a preferred embodiment of the present invention, the thickness of the insulating polymer layer is 0.5 to 1.5mm, for example, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range of values are also applicable.
Insulating macromolecular layer can carry out reasonable selection according to the use scene of battery, and the insulating macromolecular layer through selecting different melting point temperature is with the threshold value of control outer short circuit structure "switch" effect, the utility model discloses through exploring the discovery, the effect that triggers "switch" formation outer short circuit when short circuit leads to electric core or battery to heat up to 130 ~ 170 ℃ including is best, and is best to the protection effect of electric core and battery.
In order to make the insulating polymer layer drip quickly after melting, the thickness of the insulating polymer layer should not be too thick, and the thickness of the insulating polymer layer should be reduced as much as possible under the condition that the first conductive piece and the second conductive piece are effectively insulated when the insulating polymer layer is used at normal temperature, so that the first conductive piece and the second conductive piece can move and overlap.
Insulating macromolecular layer self has the cohesiveness because can realize with the first electrically conductive piece and the firm bonding that the second is electrically conductive, insulating macromolecular layer specifically can select one arbitrary or two kinds at least above-mentioned materials in polyvinylidene fluoride layer, polytetrafluoroethylene layer, polypropylene layer, polyethylene layer, polyvinyl chloride layer, ABS resin layer, methacrylic acid resin layer, polyamide layer, polyester layer, polyacetal layer, SBR layer, acrylic acid butadiene rubber layer or polybutadiene rubber layer, polyvinyl chloride, the polychloropropene polymer to superpose mutually and be in the same place and the composite bed that forms.
As a preferred technical solution of the present invention, the first conductive member is a first metal sheet, and the second conductive member is a second metal sheet; the first metal sheet and the second metal sheet are both independently selected from a copper sheet or an aluminum sheet.
In a second aspect, the utility model provides a laminate polymer battery, include laminate polymer housing and be located laminate polymer housing interior if first aspect electric core.
As the utility model discloses preferred technical scheme, first electrically conductive piece the second electrically conductive piece with anodal utmost point ear reaches negative pole utmost point ear all is located same one side of soft packet of shell.
As the utility model discloses preferred technical scheme, soft packet of shell is the plastic-aluminum membrane.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up the outer short circuit structure that has "switch" effect between anodal utmost point ear and negative pole utmost point ear for when the short circuit causes the thermal runaway including electric core, melt the insulating high score sublayer in the outer short circuit structure, realize the electric connection between anodal utmost point ear and the negative pole utmost point ear, make the interior short circuit change into outer short circuit, and then effectively avoid battery temperature to heat up too fast, effectively slowed down the speed of thermal runaway, the utility model discloses a set up simple and easy, low cost's outer short circuit structure has improved the security performance of electric core and battery effectively.
Drawings
Fig. 1 is a schematic structural diagram of an electrical core according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an electrical core according to embodiment 2 of the present invention;
the battery comprises a battery core 1, a positive electrode tab 2, a negative electrode tab 3, a first conductive piece 4, a second conductive piece 5 and an insulating polymer layer 6.
Detailed Description
In order to make the technical solution, objects and advantages of the present invention clearer, the present invention is described in further detail below with reference to specific embodiments and accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. For the electrical and communication fields, either a wired connection or a wireless connection is possible. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.
Example 1
The embodiment provides an electric core and a soft package battery containing the same, wherein the soft package battery comprises a soft package shell and an electric core positioned in the soft package shell, a structural schematic diagram of the electric core is shown in fig. 1, and as can be seen from the diagram, the electric core 1 comprises a positive pole piece provided with a positive pole tab 2, a negative pole piece provided with a negative pole tab 3, and an isolating film arranged between the positive pole piece and the negative pole piece;
the positive electrode tab 2 is connected with the negative electrode tab 3 through an external short circuit structure, and the external short circuit structure comprises a first conductive piece 4 connected with the positive electrode tab 2 and a second conductive piece 5 connected with the negative electrode tab 3; one end of the first conductive piece 4 is in contact with the positive electrode tab 2, and the other end extends towards the direction close to the negative electrode tab 3; one end of the second conductive piece 5 is in contact with the negative electrode tab 3, and the other end extends towards the direction close to the positive electrode tab 2; the first conductive piece 4 and the second conductive piece 5 are intersected and overlapped between the positive electrode tab 2 and the negative electrode tab 3, so that the first conductive piece is provided with a first overlapping area, the second conductive piece is provided with a second overlapping area, and the first overlapping area and the second overlapping area are connected through an insulating high polymer layer 6;
the first lap joint region, the second lap joint region and the insulating polymer layer 6 are all parallel to a horizontal plane; the insulating polymer layer 6 is a polypropylene layer, the melting point is 190 ℃, and the thickness is 0.5mm; the first conductive piece 4 is an aluminum metal sheet, and the second conductive piece 5 is a copper metal sheet;
the soft package shell is an aluminum plastic film, and electrolyte is also poured into the battery core 1 of the soft package battery; the first conductive piece 4, the second conductive piece 5, the positive electrode tab 2 and the negative electrode tab 3 are all positioned on the same side of the soft package shell;
after the insulating polymer layer 6 is melted and dripped, the first conductive piece 4 can be in lap joint with the second conductive piece 5 in the first lap joint area and the second lap joint area through the action of gravity to form electric connection, so that the electric core 1 and the soft package battery containing the electric core 1 form an external short circuit.
Example 2
The embodiment provides an electric core and a soft package battery containing the same, wherein the soft package battery comprises a soft package shell and an electric core positioned in the soft package shell, a structural schematic diagram of the electric core is shown in fig. 2, and as can be seen from the diagram, the electric core 1 comprises a positive pole piece provided with a positive pole tab 2, a negative pole piece provided with a negative pole tab 3, and an isolating film arranged between the positive pole piece and the negative pole piece;
the positive electrode tab 2 is connected with the negative electrode tab 3 through an external short circuit structure, and the external short circuit structure comprises a first conductive piece 4 connected with the positive electrode tab 2 and a second conductive piece 5 connected with the negative electrode tab 3; one end of the first conductive piece 4 is in contact with the positive electrode tab 2, and the other end extends towards the direction close to the negative electrode tab 3; one end of the second conductive piece 5 is in contact with the negative electrode tab 3, and the other end extends towards the direction close to the positive electrode tab 2; the first conductive piece 4 and the second conductive piece 5 are intersected and overlapped between the positive electrode tab 2 and the negative electrode tab 3, so that the first conductive piece is provided with a first overlapping area, the second conductive piece is provided with a second overlapping area, and the first overlapping area and the second overlapping area are connected through an insulating high polymer layer 6;
the first lap joint area, the second lap joint area and the insulating polymer layer form an included angle of 45 degrees with the horizontal plane; the insulating polymer layer 6 is a polyethylene layer, the melting point is 110 ℃, and the thickness is 1mm; the first conductive piece 4 is an aluminum sheet metal, and the second conductive piece 5 is an aluminum sheet metal;
the soft package shell is an aluminum plastic film, and electrolyte is also poured into the battery core 1 of the soft package battery; the first conductive piece 4, the second conductive piece 5, the positive electrode tab 2 and the negative electrode tab 3 are all positioned on the same side of the soft package shell;
after the insulating polymer layer 6 is melted and dripped, the first conductive piece 4 can be in lap joint with the second conductive piece 5 in the first lap joint area and the second lap joint area through the action of gravity to form electric connection, so that the electric core 1 and the soft package battery containing the electric core 1 form an external short circuit.
Example 3
The embodiment provides an electric core and a soft package battery containing the same, wherein the soft package battery comprises a soft package shell and an electric core positioned in the soft package shell, the electric core comprises a positive pole piece provided with a positive pole tab, a negative pole piece provided with a negative pole tab and an isolating film arranged between the positive pole piece and the negative pole piece;
the positive electrode lug is connected with the negative electrode lug through an external short circuit structure, and the external short circuit structure comprises a first conductive piece connected with the positive electrode lug and a second conductive piece connected with the negative electrode lug; one end of the first conductive piece is in contact with the positive electrode tab, and the other end of the first conductive piece extends towards the direction close to the negative electrode tab; one end of the second conductive piece is in contact with the negative electrode tab, and the other end of the second conductive piece extends towards the direction close to the positive electrode tab; the first conductive piece and the second conductive piece are crossed and overlapped between the anode tab and the cathode tab, so that the first conductive piece is provided with a first overlapping area, the second conductive piece is provided with a second overlapping area, and the first overlapping area is connected with the second overlapping area through an insulating high polymer layer;
the first lap joint area, the second lap joint area and the insulating polymer layer form an included angle of 65 degrees with the horizontal plane; the insulating polymer layer is made of polychloropropene, the melting point is 165 ℃, and the thickness is 1.5mm; barb structures are arranged on the surfaces of the first overlapping area and the second overlapping area, and the height of each barb structure is 0.25mm; the first conductive piece is a copper metal sheet, and the second conductive piece is a copper metal sheet;
the soft package shell is an aluminum plastic film, and an electrolyte is also poured into the battery cell of the soft package battery; the first conductive piece, the second conductive piece, the positive electrode lug and the negative electrode lug are all positioned on the same side of the soft package shell;
after the insulating polymer layer is melted and dripped, the first conductive piece can be in lap joint with the second conductive piece in the first lap joint area and the second lap joint area through the action of gravity to form electric connection, so that the battery cell and the soft package battery containing the battery cell form an external short circuit.
Comparative example 1
The cell comprises a positive pole piece provided with a positive pole tab, a negative pole piece provided with a negative pole tab and an isolating film arranged between the positive pole piece and the negative pole piece; the soft package shell is an aluminum plastic film, and an electrolyte is also poured into the battery cell of the soft package battery; the positive pole utmost point ear reaches negative pole utmost point ear all is located same one side of soft packet of shell.
The pouch batteries obtained in examples and comparative examples were subjected to a heating test: and (3) placing the charged soft package battery in a temperature box, heating the soft package battery from room temperature to a test temperature at a speed of 5 ℃/min, keeping the temperature constant, continuously observing and monitoring the temperature rise of the battery, and stopping heating after testing for 30 min.
In the heating test, the soft package batteries obtained in the examples 1, 2 and 3 generate external short circuits at the test temperatures of 200 ℃, 130 ℃ and 170 ℃ respectively, the heating rate is rapidly reduced, and the thermal runaway temperature is over 230 ℃; and the soft package battery obtained in the comparative example 1 is subjected to thermal runaway when the temperature reaches the use limit of the battery. Can find out from above, the utility model discloses a set up outer short circuit structure and make short circuit accident change outer short circuit in the battery into, and then slow down the speed of battery thermal runaway, effectively improve the battery security.
The present invention is described in detail with reference to the above embodiments, but the present invention is not limited to the above detailed structural features, i.e. the present invention can be implemented only by relying on the above detailed structural features. It should be clear to those skilled in the art that any modifications to the present invention, to the equivalent replacement of selected parts and the addition of auxiliary parts, the selection of specific modes, etc., all fall within the scope of protection and disclosure of the present invention.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. An electric core is characterized by comprising a positive pole piece provided with a positive pole lug (2), a negative pole piece provided with a negative pole lug (3) and an isolating film arranged between the positive pole piece and the negative pole piece;
the positive electrode lug (2) is connected with the negative electrode lug (3) through an external short circuit structure, and the external short circuit structure comprises a first conductive piece (4) connected with the positive electrode lug (2) and a second conductive piece (5) connected with the negative electrode lug (3); the first conductive piece (4) is connected with the second conductive piece (5) through the insulating polymer layer (6), and after the insulating polymer layer (6) is melted and drips, the first conductive piece (4) is connected with the second conductive piece (5) in an overlapping mode through the action of gravity to form electric connection.
2. The cell of claim 1, wherein the first conductive member (4) and the second conductive member (5) meet and overlap between the positive electrode tab (2) and the negative electrode tab (3), such that the first conductive member (4) has a first overlapping region and the second conductive member (5) has a second overlapping region, and the first overlapping region and the second overlapping region are connected through the insulating polymer layer (6).
3. The cell of claim 2, wherein the insulating polymer layer (6) disposed between the first and second lap joint regions has an angle of less than 90 ° with respect to the horizontal.
4. The cell of claim 2, wherein the surfaces of the first and second lap zones are each provided with a barb structure having a height smaller than half the thickness of the insulating polymer layer (6).
5. The electrical core according to claim 1, characterized in that the insulating polymer layer (6) has a melting point of 130 to 170 ℃ and/or that the insulating polymer layer (6) is converted into a fluid at 130 to 170 ℃.
6. The electrical core according to claim 1, wherein the thickness of the insulating polymer layer (6) is 0.5 to 1.5mm.
7. The electrical core of claim 1, wherein the first electrically conductive member (4) is a first metal sheet and the second electrically conductive member (5) is a second metal sheet; the first metal sheet and the second metal sheet are both independently selected from a copper sheet or an aluminum sheet.
8. A pouch battery, characterized by comprising a pouch casing and the battery cell (1) according to any of claims 1-7 located inside the pouch casing.
9. The pouch battery according to claim 8, wherein the first conductive member (4), the second conductive member (5) and the positive electrode tab (2) and the negative electrode tab (3) are all located on the same side of the pouch case.
10. The pouch cell according to claim 8 or 9, characterized in that the pouch case is an aluminum plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222830619.8U CN218731160U (en) | 2022-10-26 | 2022-10-26 | Battery core and soft package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222830619.8U CN218731160U (en) | 2022-10-26 | 2022-10-26 | Battery core and soft package battery |
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| Publication Number | Publication Date |
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| CN218731160U true CN218731160U (en) | 2023-03-24 |
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| CN202222830619.8U Active CN218731160U (en) | 2022-10-26 | 2022-10-26 | Battery core and soft package battery |
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| CN (1) | CN218731160U (en) |
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- 2022-10-26 CN CN202222830619.8U patent/CN218731160U/en active Active
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