CN113224427A - PCB type battery cover plate, preparation method thereof and battery with PCB type battery cover plate - Google Patents
PCB type battery cover plate, preparation method thereof and battery with PCB type battery cover plate Download PDFInfo
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- CN113224427A CN113224427A CN202010071300.4A CN202010071300A CN113224427A CN 113224427 A CN113224427 A CN 113224427A CN 202010071300 A CN202010071300 A CN 202010071300A CN 113224427 A CN113224427 A CN 113224427A
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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
Abstract
The invention provides a PCB type battery cover plate, a preparation method thereof and a battery with the same, wherein the preparation method comprises the following steps: s1, providing a cover plate body, and arranging an insulating layer on the cover plate body; s2, arranging a circuit layer on the insulating layer, and processing at least one part of the middle part of the circuit layer to form a fusing part, wherein the cross sectional area of the fusing part is smaller than that of the two side parts of the fusing part on the circuit layer or the melting point of the fusing part is lower than that of the two side parts; and S3, arranging a protective layer on the circuit layer and the insulating layer. According to the preparation method provided by the embodiment of the invention, the cross sectional area of the fusing part is set to be smaller than the cross sectional areas of the two sides, or the melting point of the fusing part is smaller than the melting points of the two sides, so that the circuit layer has double functions of conducting under a normal condition and fusing under a large current condition, and the prepared PCB battery cover plate is small in thickness and meets the size requirement of a miniature battery.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a PCB type battery cover plate, a preparation method of the PCB type battery cover plate and a battery with the PCB type battery cover plate.
Background
At present, the PCB type battery cover plate is not widely applied, and one reason is that the existing PCB type battery cover plate does not have a fusing function, is difficult to automatically fuse under the condition of high current, and is difficult to ensure the safety.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
In view of this, the present invention provides a PCB-type battery cover plate, a method for manufacturing the PCB-type battery cover plate, and a battery having the PCB-type battery cover plate.
The preparation method of the PCB type battery cover plate according to the embodiment of the first aspect of the invention comprises the following steps: s1, providing a cover plate body, and arranging an insulating layer on the cover plate body; s2, arranging a circuit layer on the insulating layer, and processing at least one part of the middle part of the circuit layer to form a fusing part, wherein the cross-sectional area of the fusing part is smaller than that of the parts, located on two sides of the fusing part, of the circuit layer or the melting point of the fusing part is lower than that of the parts located on two sides of the fusing part; and S3, arranging a protective layer on the circuit layer and the insulating layer.
According to the preparation method of the PCB type battery cover plate, the fusing part is processed on the circuit layer, the cross section area of the fusing part is set to be smaller than the cross section areas of the two sides, or the melting point of the fusing part is smaller than the melting points of the two sides, so that the circuit layer has double functions of conducting under a normal condition and fusing under a large current condition, the thickness of the prepared PCB battery cover plate is small, the size requirement of a miniature battery is met, in addition, the preparation method is simple and feasible, and large-scale batch production is facilitated.
The preparation method of the PCB type battery cover plate according to the embodiment of the invention can also have the following additional technical characteristics:
according to an embodiment of the invention, the insulating layer and the circuit layer are laminated on the cover plate body.
According to an embodiment of the present invention, in step S2, the circuit layer includes: an electrode terminal formed in a circular or polygonal shape, the electrode terminal being exposed to the protective layer; and the fusing strip is formed into a long strip shape, one end of the fusing strip is connected with the electrode terminal, and the fusing part is arranged on the fusing strip.
According to one embodiment of the invention, the fuse strip comprises: a first segment, one end of which is connected to the electrode terminal and the other end of which is formed as a first tapered breakpoint that gradually decreases in width from one end to the other end; the second segment is formed into a long strip shape, one end of the second segment is formed into a second conical breaking point opposite to the first conical breaking point in the direction, and the fusing part is arranged between the first segment and the second segment to connect the first conical breaking point and the second conical breaking point.
According to an embodiment of the present invention, the first segment, the second segment and the fusing part are integrally formed, and a cross-sectional area of the fusing part is smaller than or equal to a surface area of an end of the first taper break point or the second taper break point.
According to an embodiment of the present invention, the fuse strip forms the first tapered breaking point, the second tapered breaking point, and the fuse portion by laser etching, electroplating, or vapor deposition.
According to an embodiment of the present invention, the fusing part is formed by connecting the first taper break point and the second taper break point by an alloy having a melting point lower than that of the first segment and the second segment.
According to one embodiment of the invention, the alloy is a tin alloy or a bismuth alloy.
According to an embodiment of the invention, the cover plate body is provided with a channel penetrating along a thickness direction of the cover plate body, the fusing strip is provided with a plurality of connecting parts electrically connected with the other side of the cover plate body through the channel, the fusing part is arranged at one end adjacent to the fusing strip and connected with the electrode terminal, and the connecting parts are arranged at one side of the fusing part far away from the electrode terminal at intervals along a length direction of the fusing strip.
The PCB-type battery cover plate according to an embodiment of the second aspect of the present invention includes: a cover plate body; the insulating layer is arranged on one side surface of the cover plate body and covers at least one part of the cover plate body; the circuit layer is arranged on the insulating layer, at least one part of the middle part of the circuit layer is formed into a fusing part, and the cross sectional area of the fusing part is smaller than that of the parts, located on two sides of the fusing part, of the circuit layer or the melting point of the fusing part is lower than that of the parts located on the two sides of the fusing part; a protective layer disposed on at least a portion of an outer surface of the circuit layer and the insulating layer.
According to an embodiment of the invention, the insulating layer and the circuit layer are laminated on the cover plate body.
According to one embodiment of the invention, the circuit layer comprises: an electrode terminal formed in a circular or polygonal shape, the electrode terminal being exposed to the protective layer; and the fusing strip is formed into a long strip shape, one end of the fusing strip is connected with the electrode terminal, and the fusing part is arranged on the fusing strip.
According to one embodiment of the invention, the fuse strip comprises: a first segment, one end of which is connected to the electrode terminal and the other end of which is formed as a first tapered breakpoint that gradually decreases in width from one end to the other end; the second segment is formed into a long strip shape, one end of the second segment is formed into a second conical breaking point opposite to the first conical breaking point in the direction, and the fusing part is arranged between the first segment and the second segment to connect the first conical breaking point and the second conical breaking point.
According to an embodiment of the present invention, the first segment, the second segment and the fusing part are integrally formed, and a cross-sectional area of the fusing part is smaller than or equal to a surface area of an end of the first taper break point or the second taper break point.
According to an embodiment of the present invention, the fuse strip forms the first tapered breaking point, the second tapered breaking point, and the fuse portion by laser etching, electroplating, or vapor deposition.
According to an embodiment of the present invention, the fusing part is formed by connecting the first taper break point and the second taper break point by an alloy having a melting point lower than that of the first segment and the second segment.
According to one embodiment of the invention, the alloy is a tin alloy or a bismuth alloy.
According to an embodiment of the invention, the cover plate body is provided with a channel penetrating along a thickness direction of the cover plate body, the fusing strip is provided with a plurality of connecting parts electrically connected with the other side of the cover plate body through the channel, the fusing part is arranged at one end adjacent to the fusing strip and connected with the electrode terminal, and the connecting parts are arranged at one side of the fusing part far away from the electrode terminal at intervals along a length direction of the fusing strip.
The battery according to the third aspect of the embodiment of the invention comprises the PCB type battery cover plate of any one of the above embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a method of manufacturing a PCB-type battery cover plate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit layer of a PCB-type battery cover plate according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a circuit layer of a PCB-type battery cover plate according to another embodiment of the present invention;
reference numerals:
a PCB type battery cover plate 100;
a cover plate body 10;
a circuit layer 20; an electrode terminal 21; a fusing strip 22; a first segment 221; a second segment 222; the fusing part 223.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
First, a method for manufacturing a PCB type battery cover plate according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the method for preparing a PCB type battery cover plate according to an embodiment of the present invention includes the steps of:
s1, providing a cover plate body, and arranging an insulating layer on the cover plate body;
s2, arranging a circuit layer on the insulating layer, and processing at least one part of the middle part of the circuit layer to form a fusing part, wherein the cross-sectional area of the fusing part is smaller than that of the parts, located on two sides of the fusing part, of the circuit layer or the melting point of the fusing part is lower than that of the parts located on two sides of the fusing part;
and S3, arranging a protective layer on the circuit layer and the insulating layer.
In other words, the specific preparation process of the preparation method of the PCB type battery cover plate according to the embodiment of the present invention may be as follows:
1) the PCB type whole board manufacturing is similar to the existing double-sided conduction board process and comprises the steps of substrate prefabrication, insulating layer/circuit layer assembly, drilling, resin hole filling, drilling, electroless copper plating, resin hole filling, electroless copper plating, circuit etching (including a melting point), nickel plating and the like;
2) coating a protective layer, namely coating an insulating layer, a circuit layer and the like by using solder resist ink;
3) and (4) part processing and forming, including part stripping, step forming, shaping and the like.
Compared with the traditional preparation method of the PCB battery cover plate, the method has the advantages that after the circuit layer is assembled to the insulating layer, the circuit layer is processed, the fusing part is formed on the circuit layer, the cross section area of the fusing part is smaller than that of the two sides, or the melting point of the fusing part is smaller than that of the two sides, and the fusing part is I-Q2The RT heating principle achieves the purpose of line fusing by setting corresponding parameters.
Specifically, when the cross-sectional area of the fusing part is smaller than that of the two sides, according to the condition that R is rho L/S (wherein rho represents the resistivity of the resistor and is determined by the property of the resistor, L represents the length of the resistor, and S represents the cross-sectional area of the resistor), a smaller cross-sectional area S is set to set a proper line resistor, and when the loop current is abnormally increased, abnormally large heat is generated to abnormally increase the temperature of the fusing part so as to fuse the circuit of the fusing part.
When the melting point of the fusing part is smaller than the melting points of the two sides, the conducting circuit (whole or local) is made by selecting the conducting material with the proper melting point temperature, and when the circuit current abnormally increases and the temperature abnormally rises to the melting point of the low-melting-point alloy, or the temperature of the product per se rises to the melting point of the alloy, the circuit layer is wholly or locally fused.
It should be noted that the insulating layer and the circuit layer may be disposed on one side of the cover plate body, or both sides of the cover plate body, and each circuit layer may be disposed with a fuse portion, or only one of the circuit layers may be disposed with a fuse portion. This structure can carry out reasonable regulation according to battery apron's user demand.
Therefore, according to the preparation method of the PCB type battery cover plate provided by the embodiment of the invention, the cross section area of the fusing part is set to be smaller than the cross section areas of the two sides by processing the fusing part on the circuit layer, or the melting point of the fusing part is smaller than the melting points of the two sides, so that the circuit layer has double functions of conduction under a normal condition and fusing under a large current condition, the prepared PCB cover plate is small in thickness, the size requirement of a miniature battery is met, and in addition, the preparation method is simple and feasible, and is convenient for large-scale batch production.
According to an embodiment of the invention, the insulating layer and the circuit layer are laminated on the cover plate body. Therefore, the method can quickly realize the assembly of the circuit layer and the insulating layer, and can facilitate the subsequent processing of the circuit layer to form the fusing part.
As shown in fig. 2 and 3, in some embodiments of the present invention, in step S2, the circuit layer 20 includes: electrode terminals 21 and a fuse strip 22.
Specifically, the electrode terminal 21 is formed in a circular or polygonal shape, the electrode terminal 21 is exposed to the protective layer, the fusing bar 22 is formed in a long shape, one end of the fusing bar 22 is connected to the electrode terminal 21, and the fusing portion 223 is provided on the fusing bar 22. From this, through setting circuit layer 20 to electrode terminal 21 and fusing strip 22 two parts, when the encapsulation, electrode terminal 21 exposes and conducts electricity, and the protective layer can cover fusing strip 22, not only guarantees circuit layer 20's electric conductivity, and design fusing function that banding fusing strip 22 can be better moreover, and it is more convenient to prepare.
Alternatively, in accordance with one embodiment of the present invention, the fuse strip 22 includes: a first segment 221 and a second segment 222.
Specifically, one end of the first segment 221 is connected to the electrode terminal 21, the other end of the first segment 221 is formed as a first tapered breakpoint whose width gradually decreases from one end to the other end, the second segment 222 is formed in a long shape, one end of the second segment 222 is formed as a second tapered breakpoint facing the first tapered breakpoint, and the fusing part 223 is disposed between the first segment 221 and the second segment 222 to connect the first tapered breakpoint and the second tapered breakpoint. Therefore, the first segment 221 and the second segment 222 are connected by the fusing part 223 only needing to be connected with the conical breaking point with the smaller sectional area through the conical breaking points arranged at the opposite ends of the first segment 221 and the second segment 222, so that the first segment 221 and the second segment 222 can be fused in time under the condition of large current more easily, and the use safety is ensured.
In some embodiments of the present invention, the first segment 221, the second segment 222 and the fusing part 223 are integrally formed, and a cross-sectional area of the fusing part 223 is smaller than or equal to a surface area of an end of the first taper break point or the second taper break point. Preferably, the fusing stripe 22 is formed with a first taper breaking point, a second taper breaking point and a fusing part 223 by laser etching, electroplating or vapor deposition.
That is, in the present embodiment, the fuse strip 22 is a metal member formed integrally, and the circuit layer 20 may be formed integrally with the electrode terminal 21, after the circuit layer 20 is assembled with the insulating layer on the cover body 10, the fuse portion 223 may be formed on the fuse strip 22 by means of PCB cover line etching (secondary etching using laser), electroplating, physical/chemical vapor deposition, etc., a smaller cross-sectional area S is set to set a suitable line resistance, and when the loop current is abnormally increased, an abnormally large amount of heat is generated to abnormally increase the temperature of the fuse portion, so as to achieve the melting point of the metal to fuse the circuit.
In other embodiments of the present invention, the fusing part 223 is formed by connecting the first taper break point and the second taper break point by an alloy having a melting point lower than that of the first segment 221 and the second segment 222. Optionally, the alloy is a tin alloy or a bismuth alloy.
In other words, in the present embodiment, the first segment 221 and the second segment 222 of the fuse strip 22 are respectively assembled with the insulating layer onto the cap body 10, and then the first segment 221 and the second segment 222 are communicated by an alloy having a melting point lower than that of the first segment 221 and the second segment 222, forming the fuse portion 223. Thus, when the circuit current abnormally increases and the temperature abnormally rises to the melting point of the low-melting-point alloy, or when the temperature of the product itself rises to the melting point of the alloy, the circuit layer is wholly or partially fused.
According to an embodiment of the present invention, the cap body 10 is provided with a through channel penetrating in a thickness direction thereof, the fuse strip 22 is provided with a plurality of connection portions electrically connected to the other side of the cap body 10 through the through channel, the fuse portion 223 is provided adjacent to an end of the fuse strip 22 connected to the electrode terminal 21, and the plurality of connection portions are provided at a side of the fuse portion 223 distant from the electrode terminal 23 at intervals in a length direction of the fuse strip 22.
That is, the fusing bar 22 may be provided with a plurality of connecting parts electrically connected to the other side of the cap body 10, and the fusing parts 223 are provided at positions of the fusing bar 22 where all the connecting parts are electrically connected to the electrode terminals 21, so that when any one of the connecting parts fuses the fusing parts 223 due to a large current, all the connecting parts are disconnected from the electrode terminals 21, thereby ensuring the safety of the battery. In addition, when a large current is applied to the circuit layer 20, the fusing part 223 approaches the electrode terminal 21, so that current can be rapidly induced and fused, thereby further improving the safety of the battery.
In summary, the method for manufacturing the PCB-type battery cover plate according to the embodiment of the present invention has a compact structure, and the circuit layer 20 has dual functions of conducting under normal conditions and fusing under abnormal conditions by providing the small-section fusing structure of the circuit layer 20 or selecting the fusing structure of the low-melting-point alloy, and the minimum height of the finished product is less than 0.5mm, so the method is particularly suitable for the micro-battery with the cover plate and the case welded structure. The structure, the material and the manufacturing process of the product are compatible with the prior art, and the product is convenient for large-scale mass production.
The PCB-type battery cover plate 100 according to an embodiment of the present invention includes: a cover plate body 10, an insulating layer, a circuit layer 20 and a protective layer.
Specifically, an insulating layer is provided on one side surface of the cap body 10 and covers at least a portion of the cap body 10, the circuit layer 20 is provided on the insulating layer, at least a portion of a middle portion of the circuit layer 20 is formed as a fusing part 223, a cross-sectional area of the fusing part 223 is smaller than a cross-sectional area of a portion of the circuit layer 20 located on both sides of the fusing part 223 or a melting point of the fusing part 223 is lower than melting points of the portions on both sides, and a protective layer is provided on at least a portion of outer surfaces of the circuit layer 20 and the insulating layer.
The detailed structure and the corresponding technical effects of the PCB type battery cover plate 100 according to the embodiment of the present invention have been described in detail in the above embodiments, and thus are not described again.
In addition, the battery according to the embodiment of the present invention includes the PCB type battery cover 100 according to the above-mentioned embodiment, and since the PCB type battery cover 100 according to the above-mentioned embodiment of the present invention has the above-mentioned technical effects, the battery according to the embodiment of the present invention also has the corresponding technical effects, i.e., the battery cover is small in size and high in safety.
Other structures of the battery according to the embodiment of the present invention, such as the case, etc., are understood and easily implemented by those skilled in the art, and thus will not be described in detail.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (19)
1. A preparation method of a PCB type battery cover plate is characterized by comprising the following steps:
s1, providing a cover plate body, and arranging an insulating layer on the cover plate body;
s2, arranging a circuit layer on the insulating layer, and processing at least one part of the middle part of the circuit layer to form a fusing part, wherein the cross-sectional area of the fusing part is smaller than that of the parts, located on two sides of the fusing part, of the circuit layer or the melting point of the fusing part is lower than that of the parts located on two sides of the fusing part;
and S3, arranging a protective layer on the circuit layer and the insulating layer.
2. The method of claim 1, wherein the insulating layer and the circuit layer are laminated on the cover body.
3. The method of claim 1, wherein in step S2, the circuit layer comprises:
an electrode terminal formed in a circular or polygonal shape, the electrode terminal being exposed to the protective layer;
and the fusing strip is formed into a long strip shape, one end of the fusing strip is connected with the electrode terminal, and the fusing part is arranged on the fusing strip.
4. The method of claim 3, wherein the fusing strip comprises:
a first segment, one end of which is connected to the electrode terminal and the other end of which is formed as a first tapered breakpoint that gradually decreases in width from one end to the other end;
the second segment is formed into a long strip shape, one end of the second segment is formed into a second conical breaking point opposite to the first conical breaking point in the direction, and the fusing part is arranged between the first segment and the second segment to connect the first conical breaking point and the second conical breaking point.
5. The method of claim 4, wherein the first segment, the second segment and the fuse portion are integrally formed, and a cross-sectional area of the fuse portion is smaller than or equal to a surface area of an end of the first tapered breakpoint or the second tapered breakpoint.
6. The method of claim 5, wherein the fuse strip forms the first tapered break point, the second tapered break point, and the fuse portion by laser etching, electroplating, or vapor deposition.
7. The method of claim 4, wherein the fuse portion is formed by connecting the first tapered break point and the second tapered break point by an alloy having a lower melting point than the first segment and the second segment.
8. The method of claim 7, wherein the alloy is a tin alloy or a bismuth alloy.
9. The method as claimed in any one of claims 3 to 8, wherein the cap body is provided with a passage penetrating through the cap body in a thickness direction thereof, the fuse strip is provided with a plurality of connecting portions electrically connected to the other side of the cap body through the passage, the fuse portion is provided adjacent to an end of the fuse strip connected to the electrode terminal, and the plurality of connecting portions are provided at a side of the fuse portion away from the electrode terminal at intervals in a length direction of the fuse strip.
10. A PCB-type battery cover plate, comprising:
a cover plate body;
the insulating layer is arranged on one side surface of the cover plate body and covers at least one part of the cover plate body;
the circuit layer is arranged on the insulating layer, at least one part of the middle part of the circuit layer is formed into a fusing part, and the cross sectional area of the fusing part is smaller than that of the parts, located on two sides of the fusing part, of the circuit layer or the melting point of the fusing part is lower than that of the parts located on the two sides of the fusing part;
a protective layer disposed on at least a portion of an outer surface of the circuit layer and the insulating layer.
11. The PCB-type battery cover plate of claim 10, wherein the insulating layer and the circuit layer are laminated on the cover plate body.
12. The PCB-type battery cover plate of claim 10, wherein the circuit layer comprises:
an electrode terminal formed in a circular or polygonal shape, the electrode terminal being exposed to the protective layer;
and the fusing strip is formed into a long strip shape, one end of the fusing strip is connected with the electrode terminal, and the fusing part is arranged on the fusing strip.
13. The PCB-type battery cover plate of claim 12, wherein the fusing tape comprises:
a first segment, one end of which is connected to the electrode terminal and the other end of which is formed as a first tapered breakpoint that gradually decreases in width from one end to the other end;
the second segment is formed into a long strip shape, one end of the second segment is formed into a second conical breaking point opposite to the first conical breaking point in the direction, and the fusing part is arranged between the first segment and the second segment to connect the first conical breaking point and the second conical breaking point.
14. The PCB-type battery cover plate of claim 13, wherein the first segment and the second segment are integrally formed with the fusing part, and the cross-sectional area of the fusing part is smaller than or equal to the surface area of the end of the first conical breaking point or the second conical breaking point.
15. The PCB-type battery cover plate of claim 14, wherein the fusing tape forms the first tapered breaking point, the second tapered breaking point and the fusing part by laser etching, electroplating or vapor deposition.
16. The PCB-type battery cover plate of claim 13, wherein the fusing part is formed by connecting the first taper breaking point and the second taper breaking point through an alloy having a melting point lower than that of the first segment and the second segment.
17. The PCB-type battery cover plate of claim 16, wherein the alloy is a tin alloy or a bismuth alloy.
18. The PCB-type battery cover plate according to any one of claims 12 to 17, wherein the cover plate body is provided with a channel penetrating in a thickness direction thereof, the fuse strip is provided with a plurality of connection portions electrically connected to the other side of the cover plate body through the channel, the fuse portion is provided adjacent to one end of the fuse strip connected to the electrode terminal, and the plurality of connection portions are provided at a side of the fuse portion away from the electrode terminal at intervals in a length direction of the fuse strip.
19. A battery comprising the PCB-type battery cover plate of any one of claims 10-18.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010071300.4A CN113224427A (en) | 2020-01-21 | 2020-01-21 | PCB type battery cover plate, preparation method thereof and battery with PCB type battery cover plate |
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| CN202010071300.4A CN113224427A (en) | 2020-01-21 | 2020-01-21 | PCB type battery cover plate, preparation method thereof and battery with PCB type battery cover plate |
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| CN113224427A true CN113224427A (en) | 2021-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023108329A1 (en) * | 2021-12-13 | 2023-06-22 | Inventus Power, Inc. | Battery pack |
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| CN110379952A (en) * | 2019-07-24 | 2019-10-25 | 苏州炬鸿通讯电脑科技有限公司 | A kind of cover board structure of lithium battery of included safety protection structure |
| CN211700343U (en) * | 2020-01-21 | 2020-10-16 | 常州微宙电子科技有限公司 | PCB type battery cover plate and battery with same |
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| CN110299503A (en) * | 2019-07-29 | 2019-10-01 | 常州瑞德丰精密技术有限公司 | The battery cap of external fusing structure |
| CN211700343U (en) * | 2020-01-21 | 2020-10-16 | 常州微宙电子科技有限公司 | PCB type battery cover plate and battery with same |
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| WO2023108329A1 (en) * | 2021-12-13 | 2023-06-22 | Inventus Power, Inc. | Battery pack |
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