CN112582690A - Flexible circuit board, die-cut substrate, and battery device - Google Patents
Flexible circuit board, die-cut substrate, and battery device Download PDFInfo
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- CN112582690A CN112582690A CN201910936566.8A CN201910936566A CN112582690A CN 112582690 A CN112582690 A CN 112582690A CN 201910936566 A CN201910936566 A CN 201910936566A CN 112582690 A CN112582690 A CN 112582690A
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- edge
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- circuit board
- flexible circuit
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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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- Microelectronics & Electronic Packaging (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a flexible circuit board, a die-cut base material and a battery device, wherein the flexible circuit board is suitable for being connected between a battery management system and a plurality of battery cores and comprises a circuit substrate, the circuit substrate comprises a body part and a plurality of acquisition parts, the body part and the acquisition parts are integrally die-cut, the acquisition parts are arranged around the body part at intervals, and a connector suitable for being electrically connected with the battery management system is arranged on the body part; one end of each acquisition part is connected with the edge of the body part, the other end of each acquisition part is used for being connected with the battery cell, and the acquisition parts are used for enabling the connectors to acquire preset parameters of the battery cells. The flexible circuit board disclosed by the invention is low in cost and simple in processing procedure.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a flexible circuit board, a punching substrate and a battery device.
Background
In the related art, a flexible circuit board is adopted in a power battery pack to acquire the voltage of a battery core in the power battery pack. However, when the flexible circuit board collects voltage, the flexible circuit board is connected with the battery cell by adopting the nickel sheet terminal to ensure reliable connection, namely, two ends of the nickel sheet terminal are respectively connected with the flexible circuit board and the battery cell; because the nickel piece belongs to the noble metal for the cost of nickel piece itself is higher, and need process into required nickel piece shape, leads to the processing cost higher, and for guaranteeing that the connection of nickel piece terminal and flexible circuit board is reliable, still need paste another layer protection film simultaneously, and generally be equipped with a plurality of flexible circuit boards in the power battery package, make the cost of whole power battery package higher.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the flexible circuit board which is low in cost and simple in processing procedure.
The invention also provides a die-cut substrate of the circuit substrate with the flexible circuit board.
The invention also provides a battery device with the flexible circuit board.
The flexible circuit board comprises a circuit substrate, wherein the circuit substrate comprises a body part and a plurality of acquisition parts, the body part is integrally punched and cut, the acquisition parts are arranged around the body part at intervals, and a connector suitable for being electrically connected with the battery management system is arranged on the body part; one end of each acquisition part is connected with the edge of the body part, the other end of each acquisition part is used for being connected with the battery cell, and the acquisition parts are used for enabling the connectors to acquire preset parameters of the battery cells.
According to the flexible circuit board provided by the invention, the circuit substrate which is integrally punched is arranged, so that the processing procedure of the flexible circuit board can be simplified, and the cost of the flexible circuit board is effectively reduced.
In some embodiments, at least one of the acquisition portions extends along a straight line, and/or at least one of the acquisition portions extends along a fold line.
In some embodiments, at least two of the plurality of acquisition portions differ in shape.
In some embodiments, the edge of the body portion includes four sub-edges connected end to end, at least two of the sub-edges having the collecting portion formed thereon.
In some embodiments, the four sub-edges include two first sub-edges and two second sub-edges, the two first sub-edges are disposed opposite to each other, the two second sub-edges are disposed opposite to each other, the length of the first sub-edge is greater than that of the second sub-edge, each first sub-edge is connected to a plurality of the collecting portions, and each second sub-edge is connected to at least one collecting portion.
In some embodiments, the edge of the body portion is formed with a groove extending therethrough.
A die-cut substrate according to a second aspect of the present invention includes: the flexible printed circuit board comprises a board material, wherein at least two circuit substrates of the flexible printed circuit board according to the first aspect of the invention are arranged on the board material.
According to the die-cut substrate provided by the invention, the circuit substrate of the first aspect is arranged, so that the plate can be more effectively and reasonably utilized, and the cost of the circuit substrate is reduced.
In some embodiments, the plurality of circuit substrates on the plate include a first circuit substrate and a second circuit substrate which are adjacently disposed, one side edge of the first circuit substrate close to the second circuit substrate is a first edge, one side edge of the second circuit substrate close to the first circuit substrate is a second edge, the first edge and the second edge are both provided with a plurality of collecting portions, and each collecting portion on the first edge extends into a position between every two adjacent collecting portions on the second edge.
A battery device according to a third aspect of the invention includes: the flexible circuit board comprises a plurality of battery cores and the flexible circuit board according to the first aspect of the invention, wherein two adjacent battery cores are connected through a connecting sheet, and the other end of the collecting part is connected to the connecting sheet.
According to the battery device, the cost of the battery device is effectively reduced by adopting the flexible circuit board.
In some embodiments, the other end of the acquisition portion is welded to the connecting tab.
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
FIG. 1 is a schematic diagram of a flexible circuit board according to one embodiment of the present invention;
FIG. 2 is a schematic view of a die cut substrate according to one embodiment of the invention;
fig. 3 is a schematic connection diagram of a battery device according to an embodiment of the present invention.
Reference numerals:
a battery device 300; an electric core 201; a connecting piece 202; a second connecting hole 2020; a battery management system 203;
punching the substrate 200; a sheet material 101; a first circuit substrate 102; a second circuit substrate 103;
a first edge 1021; a second edge 1031;
a flexible circuit board 100;
a circuit board 1;
a body portion 11; a recess 110;
an edge 111; a sub-edge 1110; a first sub-edge 1111; a second sub-edge 1112;
a collecting section 12; a first connection hole 120; a first end 121; a second end 122;
a connector 2.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
The flexible circuit board 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 3, according to the flexible circuit board 100 of the embodiment of the present invention, the flexible circuit board 100 is suitable for being connected between the battery management system 203 and the plurality of battery cells 201, and then the battery management system 203 may obtain signals such as voltages of the plurality of battery cells 201 through the flexible circuit board 100, so that the battery management system 203 monitors the plurality of battery cells 201, for example, the battery management system 203 may monitor whether charging and discharging of the plurality of battery cells 201 are normal, and ensure that the plurality of battery cells 201 operate normally and reliably.
The flexible circuit board 100 includes a circuit substrate 1,
as shown in fig. 1 and 3, the flexible circuit board 100 includes a circuit substrate 1, where the circuit substrate 1 includes a main body 11 and a plurality of collecting parts 12, the plurality of collecting parts 12 are disposed around the main body 11 at intervals, one end of each collecting part 12 is connected to an edge 111 of the main body 11, and the other end of each collecting part 12 is used to connect to a battery cell 201, for example, the collecting part 12 may have a first end 121 and a second end 122 disposed opposite to each other, the first end 121 may be connected to the edge 111 of the main body 11, and the second end 122 may be connected to the battery cell 201.
The connector 2 is disposed on the body 11, the connector 2 may be connected to a plurality of collecting units 12 through the body 11, since the collecting units 12 are connected to the battery cells 201, the collecting units 12 are configured to enable the connector 2 to obtain predetermined parameters of the battery cells 201, such as voltage and/or temperature signals, and the connector 2 is adapted to be electrically connected to the battery management system 203, the connector 2 may transmit the predetermined parameters of the battery cells 201 obtained through the collecting units 12 to the battery management system 203, so as to ensure that the battery management system 203 monitors the plurality of battery cells 201.
The term "circuit board 1 includes the body 11 and the plurality of collectors 12" punched integrally, means that the body 11 and the plurality of collectors 12 are punched integrally, that is, the body 11 and the plurality of collectors 12 are punched integrally, and the body 11 and the plurality of collectors 12 can be formed as an integral punching part, for example, the body 11 and the plurality of collectors 12 can be punched at one time by a punching mold to be directly processed into a desired shape, thereby facilitating the processing of the circuit board 1, facilitating the reduction of the processing steps of the circuit board 1, and improving the processing efficiency. Here, the circuit substrate 1 may be connected between the battery management system 203 and the plurality of battery cells 201, and the battery management system 203 may obtain signals of predetermined parameters, such as voltage and/or temperature, of the plurality of battery cells 201 through the circuit substrate 1.
It should be noted that "a plurality of collecting parts 12 are disposed around the body part 11 at intervals" may include the following cases: the plurality of collecting parts 12 may be arranged at intervals around the body part 11 for a full turn, or the plurality of collecting parts 12 may be arranged at intervals around the body part 11 for less than a full turn, for example, the plurality of collecting parts 12 may be arranged at intervals around the body part 11 for a half turn, but is not limited thereto.
Therefore, according to the flexible circuit board 100 of the embodiment of the present invention, compared to the conventional technology, the flexible circuit board is connected to the battery cell 201 by using the nickel terminal, the body portion 11 and the plurality of collecting portions 12 of the circuit board 1 in the present application are integrally punched, so that the collecting portion 12 of the circuit board 1 is connected to the battery cell 201, and the body portion 11 of the circuit board 1 is suitable for being connected to the battery management system 203, on the premise that the flexible circuit board 100 can collect the predetermined parameter of the battery cell 201, the nickel terminal is not required to be additionally arranged, an SMT (surface mount technology) procedure of mounting the nickel terminal on the body portion 11 can be omitted, a procedure of covering a protective film on the nickel terminal to enhance the bonding force between the nickel terminal and the body portion 11 is omitted, thereby simplifying the processing procedure of the circuit board 1, further simplifying the processing procedure of the flexible circuit board 100, and improving the processing efficiency of the flexible circuit board, the lead time of the flexible circuit board 100 is accelerated, and the cost of the nickel sheet terminal is saved, so that the cost of the flexible circuit board 100 is effectively reduced.
In addition, the flexible circuit board 100 in the present application does not need to add extra circuit materials such as copper foil materials in the processing process, can set a required shape before the main body portion 11 and the plurality of collecting portions 12 are punched, and can obtain an integrated punched piece formed by the corresponding main body portion 11 and the plurality of collecting portions 12 after punching is completed by adopting a corresponding punching shape mold, so that the processing is convenient and the processing efficiency is high.
Alternatively, the circuit area of the circuit substrate 1 may be made of copper foil, and the circuit area of the body portion 11 and the circuit area of the collecting portion 12 may be both made of copper foil, so that the circuit substrate 1 has good ductility and is convenient for mounting the flexible circuit board 100; but not limited thereto, for example, an aluminum foil may be used for the wiring region of the circuit substrate 1.
In some embodiments of the present invention, as shown in fig. 1-3, at least one collecting portion 12 extends in a straight line, for example, at least one collecting portion 12 extends in a straight line from the edge 111 of the body portion 11, and then one of the plurality of collecting portions 12 extends in a straight line, or at least two of the plurality of collecting portions 12 extend in a straight line, then the number of collecting portions 12 extending in a straight line may be less than or equal to the total number of collecting portions 12. From this, collection portion 12 simple structure, the die-cut of being convenient for, and the structure of being convenient for simplify die-cut mould is favorable to reducing the processing degree of difficulty of die-cut mould, reduces the cost of die-cut mould.
Wherein when the number of the acquisition parts 12 extending along the straight line is less than the total number of the acquisition parts 12, the remaining acquisition parts 12 extend along the non-straight line. It can be understood that, when at least two of the plurality of collecting portions 12 extend along a straight line, the extending directions of the at least two collecting portions 12 extending along the straight line may be parallel or non-parallel, that is, the at least two collecting portions 12 extending along the straight line may extend along the same straight line direction or extend along different straight line directions, so that the plurality of collecting portions 12 are flexibly disposed, the diversified design of the flexible circuit board 100 is realized, the flexible circuit board 100 may better satisfy the differentiation requirements in practical applications, and the flexible circuit board 100 may be suitable for the battery devices 300 of different models.
In the description of the present invention, "a plurality" means two or more.
In some embodiments of the present invention, as shown in fig. 1 and 2, at least one acquisition portion 12 extends along a fold line, for example at least one acquisition portion 12 extends from the edge 111 of the body portion 11 along a fold line, then one of the plurality of acquisition portions 12 extends along a fold line, or at least two of the plurality of acquisition portions 12 extend along a fold line, then the number of acquisition portions 12 extending along a fold line may be less than or equal to the total number of acquisition portions 12. Therefore, the deformability of the pickup portion 12 can be further improved, and even if there is an error in the mounting of the pickup portion 12 in the process of mounting the circuit board 1, the mounting of the pickup portion 12 can be completed, which is advantageous for improving the error-adaptive capability of the flexible circuit board 100.
Wherein when the number of the collecting sections 12 extending along the folding line is less than the total number of the collecting sections 12, the remaining collecting sections 12 extend along the non-folding line. It can be understood that, when at least two of the plurality of collecting portions 12 extend along the folding line, the extending directions of the at least two collecting portions 12 extending along the folding line may be parallel or non-parallel, that is, the at least two collecting portions 12 extending along the folding line may extend along the same folding line direction or extend along different folding line directions, so that the plurality of collecting portions 12 are flexibly disposed, the diversified design of the flexible circuit board 100 is also realized, the flexible circuit board 100 can better meet the differentiation requirements in practical application, and the flexible circuit board 100 can be suitable for the battery devices 300 of different models.
It should be noted that the "broken line" may refer to a zigzag connection line formed by connecting a plurality of line segments in sequence, and the extending directions of at least two of the plurality of line segments are arranged in a non-parallel manner.
It is understood that at least one acquisition portion 12 of the plurality of acquisition portions 12 may also extend along a straight line and at least one acquisition portion 12 may extend along a fold line, as shown in fig. 1 and 2; but is not limited thereto. Of course, the collecting parts 12 may also extend along other linear shapes, for example, at least one collecting part 12 may also extend along a smooth curve, so as to further realize diversified designs of the flexible circuit board 100, and the flexible circuit board 100 may be suitable for battery devices 300 of different models.
In some embodiments of the present invention, as shown in fig. 1 and fig. 2, at least two of the plurality of collecting parts 12 have different shapes, that is, the shapes of the plurality of collecting parts 12 are not completely the same, so that the design flexibility of the plurality of collecting parts 12 can be improved, and the flexible circuit board 100 can be designed in a diversified manner. For example, in the example of fig. 1 and 2, at least one of the plurality of collecting parts 12 may extend along a straight line, and at least one of the plurality of collecting parts 12 may extend along a folding line, the shape of the collecting part 12 extending along the straight line is different from that of the collecting part 12 extending along the folding line, which enriches the design of the flexible circuit board 100; for another example, the plurality of collecting portions 12 all extend along a folding line, and the extending directions of the folding lines of at least two of the plurality of collecting portions 12 are different, so that the shapes of the at least two collecting portions 12 are also different, and the design of the flexible circuit board 100 can be enriched as well; for example, if at least one of the plurality of collecting parts 12 may be formed in a rectangular shape and at least one of the plurality of collecting parts 12 may be formed in an oblong shape, the shape of the collecting part 12 formed in the rectangular shape is different from the shape of the collecting part 12 formed in the oblong shape.
Alternatively, in the example of fig. 1 to 3, the collecting part 12 may be formed in a long strip shape, for example, the collecting part 12 may be formed in a rectangular shape, an oblong shape, or the like, so that the plurality of collecting parts 12 connect the body part 11 with the plurality of battery cells 201, so that the circuit substrate 1 has good practicability. Of course, the collecting part 12 may be formed in other shapes without being limited thereto.
In some embodiments of the present invention, as shown in fig. 1, the edge 111 of the body portion 11 includes four sub-edges 1110 connected end to end in sequence, for example, the edge 111 of the body portion 11 may be formed into a quadrilateral shape, and the collecting portions 12 are formed on at least two of the sub-edges 1110, which is beneficial to realize the distributed arrangement of the plurality of collecting portions 12, and avoid the connection interference caused by the concentrated arrangement of the plurality of collecting portions 12, so that the flexible circuit board 100 meets the actual requirement, and the flexible circuit board 100 is more practical. Wherein each sub-edge 1110 may extend along a straight line or a curved line.
It is understood that "at least two of the sub-edges 1110 have the harvesting portion 12 formed thereon" may include the following cases: two of the four sub-edges 1110 have the gathers 12 formed thereon (as shown in fig. 3), or three of the four sub-edges 1110 have the gathers 12 formed thereon, or four sub-edges 1110 have the gathers 12 formed thereon (as shown in fig. 1 and 2). When the collecting portion 12 is formed on two of the four sub-edges 1110, the two sub-edges 1110 may be disposed oppositely (as shown in fig. 3) or disposed adjacently. It is understood that the number of the corresponding collecting parts 12 on each sub-edge 1110 connected with the collecting part 12 may be one or more; the number of corresponding collecting elements 12 on the plurality of sub-edges 1110 to which the collecting elements 12 are connected may or may not be equal.
Optionally, in the example of fig. 1, the four sub-edges 1110 include two first sub-edges 1111 and two second sub-edges 1112, the two first sub-edges 1111 are disposed opposite to each other, the two second sub-edges 1112 are disposed opposite to each other, the length of the first sub-edges 1111 is greater than that of the second sub-edges 1112, for example, the body portion 11 may be formed substantially in a long strip shape. Each first sub-edge 1111 is connected with a plurality of collecting parts 12, the collecting parts 12 on the first sub-edge 1111 can be arranged at intervals along the extending direction of the first sub-edge 1111, each second sub-edge 1112 is connected with at least one collecting part 12, and each second sub-edge 1112 is connected with one or more collecting parts 12; when a plurality of collecting parts 12 are connected to the second sub-edge 1112, the plurality of collecting parts 12 on the second sub-edge 1112 may be arranged at intervals along the extending direction of the second sub-edge 1112. From this, body portion 11 simple structure has made things convenient for the arrangement of collection portion 12, is favorable to simplifying the structure of circuit substrate 1, and the die-cut shaping of being convenient for, and is favorable to simplifying the structure of die-cut mould.
The number of the collecting units 12 connected to the two first sub-edges 1111 may be equal or different, and the number of the collecting units 12 connected to the two second sub-edges 1112 may be equal or different.
It will be appreciated that, since the length of the first sub-edge 1111 is greater than the length of the second sub-edge 1112, the number of the collecting parts 12 connected to the first sub-edge 1111 may be greater than the number of the collecting parts 12 connected to the second sub-edge 1112 to further facilitate the distributed arrangement of the plurality of collecting parts 12, but is not limited thereto, for example, the number of the collecting parts 12 connected to the first sub-edge 1111 may also be equal to the number of the collecting parts 12 connected to the second sub-edge 1112.
Of course, the arrangement of the gathers 12 on the four sub-edges 1110 is not limited thereto.
In some embodiments of the present invention, as shown in fig. 1, a groove 110 penetrating the edge 111 is formed at the edge 111 of the body part 11, and the groove 110 may be formed by recessing a portion of the edge 111, and the groove 110 may penetrate surfaces of both sides of the thickness of the body part 11 in the thickness direction of the body part 11. Therefore, the deformation capacity of the body part 11 can be further improved by arranging the groove 110, so that the body part 11 can effectively avoid the damage of the body part 11 caused by manufacturing errors, installation errors, temperature differences, expansion of the battery cell 201 and the like, and the use reliability of the circuit substrate 1 is improved; meanwhile, during the installation of the flexible circuit board 100, the groove 110 may be utilized to achieve the rapid positioning of the flexible circuit board 100.
It is understood that there may be one or more grooves 110, when there are a plurality of grooves 110, the plurality of grooves 110 may be spaced along the extending direction of the edge 111, and the shape of the plurality of grooves 110 may be the same or different. The shape of the groove 110 may be set according to practical applications, for example, the groove 110 may be formed as a U-shaped groove, but is not limited thereto.
The die-cut substrate 200 according to the embodiment of the second aspect of the present invention includes a plate 101, at least two circuit substrates 1 are disposed on the plate 101, and the circuit substrates 1 are arranged on the plate 101 at intervals. Wherein the circuit substrate 1 is the circuit substrate 1 of the flexible circuit board 100 according to the above-mentioned first aspect of the present invention.
For example, in the example of fig. 2, two circuit substrates 1 may be disposed on the plate material 101, the two circuit substrates 1 are arranged on the plate material 101 at intervals, and after the plate material 101 is formed, the two circuit substrates 1 may be respectively punched out by using a punching die so as to respectively punch out the outer shapes of the two circuit substrates 1; for example, the main body 11 and the plurality of collecting portions 12 of the two circuit boards 1 may be punched out after the plate member 101 is molded. Of course, three or more circuit boards 1 may be further provided on the plate 101.
According to the die-cut substrate 200 of the embodiment of the invention, the circuit substrate 1 is adopted, so that the plate 101 is more effectively and reasonably utilized, and the cost of the circuit substrate 1 is reduced.
Optionally, in the example of fig. 2, the plurality of circuit substrates 1 on the plate material 101 include a first circuit substrate 102 and a second circuit substrate 103 which are adjacently disposed, a side edge 111 of the first circuit substrate 102 close to the second circuit substrate 103 is a first edge 1021, a side edge 111 of the second circuit substrate 103 close to the first circuit substrate 102 is a second edge 1031, and a plurality of collecting parts 12 are disposed on each of the first edge 1021 and the second edge 1031, wherein each collecting part 12 on the first edge 1021 extends between every two adjacent collecting parts 12 on the second edge 1031, so that the collecting parts 12 on the first circuit substrate 102 and the second circuit substrate 103 close to each other are relatively spaced apart, so that the first circuit substrate 102 and the second circuit substrate 103 are reasonably laid out, and the plate material 101 is conveniently and effectively utilized, and the utilization rate of the plate material 101 is improved.
Of course, if the collecting parts 12 on the other edges of the first circuit substrate 102 extend toward the second circuit substrate 103, the collecting parts 12 may also extend between two adjacent collecting parts 12 on the second edge 1031, and it is only necessary to ensure that each collecting part 12 on the first circuit substrate 102 is spaced apart from each collecting part 12 on the second circuit substrate 103.
For example, in the example of fig. 2, the plate material 101 may be formed in a rectangular structure, the length of the plate material 101 in the left-right direction may be 388mm, the width of the plate material 101 in the up-down direction may be 250mm, two circuit substrates 1 are provided on the plate material 101, the two circuit substrates 1 may be arranged at intervals up and down, and each collecting portion 12 on the upper side edge of the lower circuit substrate 1 may extend between two adjacent collecting portions 12 on the lower side edge of the upper circuit substrate 1, so that the collecting portions 12 of the two circuit substrates 1 are arranged at intervals.
It is to be understood that the plurality of circuit boards 1 on the plate member 101 may have the same or different outer shapes.
According to the battery device 300 of the embodiment of the third aspect of the present invention, the battery device comprises a plurality of battery cells 201 and a flexible circuit board 100, two adjacent battery cells 201 are connected through a connection piece 202, and the other end of the collecting part 12 is connected to the connection piece 202, so that the connection between the collecting part 12 and the battery cells 201 is facilitated, and the connection reliability between the collecting part 12 and the motor is facilitated. The connecting piece 202 may be a Busbar (Busbar) on the battery cell 201.
According to the battery device 300 of the embodiment of the invention, the cost of the battery device 300 is effectively reduced by adopting the flexible circuit board 100.
Here, the battery device 300 may include a plurality of flexible circuit boards 100, the shapes of the plurality of flexible circuit boards 100 may be the same or different, and the structures of the plurality of flexible circuit boards 100 may be the same or different.
It is understood that the battery device 300 of the present invention may be applied to a vehicle, and in this case, the battery device 300 may be used as a power battery pack of the vehicle; but is not limited thereto.
Optionally, in the example of fig. 3, the other end of the acquisition portion 12 is welded to the connection sheet 202, so that reliable connection between the acquisition portion 12 and the connection sheet 202 is ensured, and the connector 2 on the body portion 11 can timely and reliably acquire the voltage signal of the battery cell 201; for example, the other end of the pickup portion 12 and the connection piece 202 may be connected by laser welding. Of course, the other end of the collecting portion 12 and the connecting piece 202 may be connected in other manners, not limited to welding, and for example, the one end of the collecting portion 12 and the connecting piece 202 may be connected by fastening with a screw connector such as a bolt.
Other constructions and operations of the battery device 300 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
The flexible circuit board 100 according to an embodiment of the present invention is described in detail in two specific embodiments with reference to fig. 1 to 3. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
Example one
In the present embodiment, as shown in fig. 1 and 2, the flexible circuit board 100 is adapted to be connected between a BATTERY management system (i.e., BMS MANAGEMENT SYSTEM)203 and a plurality of BATTERY cells 201, and two adjacent BATTERY cells 201 of the plurality of BATTERY cells 201 are connected by a connection tab 202, and the flexible circuit board 100 is adapted to be connected between the connection tab 202 and the BATTERY management system 203. The flexible circuit board 100 is a low voltage FPC.
As shown in fig. 1, the flexible circuit board 100 includes a circuit substrate 1, where the circuit substrate 1 includes a main body 11 and a collecting part 12 that are integrally punched, the main body 11 is provided with a connector 2, the connector 2 may be connected to the collecting part 12 through the main body 11, and the collecting part 12 is configured to enable the connector 2 to obtain a voltage signal of the battery cell 201; the number of the collecting parts 12 is nine, the nine collecting parts 12 are arranged around the body part 11 at intervals, each collecting part 12 is provided with a first end 121 and a second section 122 which are arranged oppositely, the first end 121 is connected with the edge 111 of the body part 11, and the second end 122 is connected with the corresponding connecting piece 202 in a welding way; the connecting piece 202 has a first connecting hole 2020 formed thereon, the second end 122 has a second connecting hole 120 formed thereon, and the connecting piece is inserted through the first connecting hole 2020 and the second connecting hole 120 to further fasten and connect the collecting part 12 to the connecting piece 202. Wherein, the connecting piece can be selected as a rivet and the like.
The first connecting holes 2020 in the connecting piece 202 may be multiple, and the multiple connecting holes 2020 may be sequentially spaced apart along the extending direction of the edge of the connecting piece 202, so that the first connecting hole 2020 may be selected to be right aligned with the second connecting hole 120 according to the position of the corresponding collecting part 12, which is convenient for improving the universality of the connecting piece 202.
As shown in fig. 1, the edge 111 of the body portion 11 includes four sub-edges 1110 connected end to end in sequence, so that the edge 111 of the body portion 11 is formed into a quadrangle, and the four sub-edges 1110 are connected with the collecting portions 12; the four sub-edges 1110 include two first sub-edges 1111 and two second sub-edges 1112, the two first sub-edges 1111 are disposed opposite to each other up and down, the two second sub-edges 1112 are disposed opposite to each other left and right, and the length of the first sub-edges 1111 is greater than that of the second sub-edges 1112, so that the body portion 11 may be formed in a substantially elongated configuration.
The upper first sub-edge 1111 is connected with three collecting parts 12, the lower first sub-edge 1111 is connected with two collecting parts 12, and the collecting parts 12 connected with the two first sub-edges 1111 extend along a straight line; two collecting parts 12 are respectively connected to the left second sub-edge 1112 and the right second sub-edge 1112, and at least one of the collecting parts 12 connected to the two second sub-edges 1112 extends along a straight line and at least one extends along a folding line.
As shown in fig. 1, a groove 110 is formed on an edge 111 of the main body 11, and the groove 110 may be formed by recessing a part of the edge 111, so as to further improve the deformability of the main body 11, so that the main body 11 may effectively avoid damage to the main body 11 caused by manufacturing errors, installation errors, temperature differences, and the like, and improve the use reliability of the circuit board 1; meanwhile, during the installation of the flexible circuit board 100, the groove 110 may be utilized to achieve the rapid positioning of the flexible circuit board 100. Among them, the groove 110 may be one or more.
According to the flexible circuit board 100 of the embodiment of the invention, the processing procedure of the circuit substrate 1 is simplified, so that the processing procedure of the flexible circuit board 100 is simplified, the delivery time of the flexible circuit board 100 is shortened, the cost of a nickel sheet terminal is saved, the cost of the flexible circuit board 100 is effectively reduced, and the cost of the flexible circuit board 100 can be reduced by about 30%.
Example two
As shown in fig. 3, the present embodiment has substantially the same structure as the first embodiment, wherein the same reference numerals are used for the same components, except that: the number of the collecting parts 12 is five, each collecting part 12 extends along a straight line, and the five collecting parts 12 are all connected to the first sub-edge 1111, wherein three collecting parts 12 are connected to the first sub-edge 1111 at the upper side, and the other two collecting parts 12 are connected to the first sub-edge 1111 at the lower side.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, 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 specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 (10)
1. A flexible circuit board is characterized in that the flexible circuit board is suitable for being connected between a battery management system and a plurality of battery cores and comprises a circuit substrate, the circuit substrate comprises a body part and a plurality of acquisition parts, the body part is integrally punched and cut, the acquisition parts are arranged around the body part at intervals, and a connector suitable for being electrically connected with the battery management system is arranged on the body part; one end of each acquisition part is connected with the edge of the body part, the other end of each acquisition part is used for being connected with an electric core, and the acquisition parts are used for enabling the connectors to acquire preset parameters of the electric cores.
2. The flexible circuit board of claim 1, wherein at least one of the pick-ups extends along a straight line and/or at least one of the pick-ups extends along a fold line.
3. The flexible circuit board according to claim 1, wherein at least two of the plurality of the pickup portions are different in shape.
4. The flexible circuit board of claim 1, wherein the edge of the body portion includes four sub-edges connected end to end, at least two of the sub-edges having the capture portion formed thereon.
5. The flexible circuit board of claim 4, wherein the four sub-edges include two first sub-edges and two second sub-edges, the two first sub-edges are disposed opposite to each other, the two second sub-edges are disposed opposite to each other, the length of the first sub-edges is greater than that of the second sub-edges, each of the first sub-edges is connected with a plurality of the collecting portions, and each of the second sub-edges is connected with at least one of the collecting portions.
6. The flexible circuit board according to any one of claims 1 to 5, wherein the edge of the body portion is formed with a groove penetrating the edge.
7. A die-cut substrate, comprising:
-a sheet material provided with at least two circuit substrates according to any one of claims 1-6.
8. The die-cut substrate according to claim 7, wherein the plurality of circuit substrates on the sheet material include a first circuit substrate and a second circuit substrate which are adjacently disposed, a side edge of the first circuit substrate close to the second circuit substrate is a first edge, a side edge of the second circuit substrate close to the first circuit substrate is a second edge, and the first edge and the second edge are both provided with a plurality of the collecting portions, wherein each of the collecting portions on the first edge extends between every two adjacent collecting portions on the second edge.
9. A battery device, comprising: a plurality of cells and the flexible circuit board of any one of claims 1-6, adjacent two of the cells being connected by a connecting tab, the other end of the collecting section being connected to the connecting tab.
10. The battery device according to claim 9, wherein the other end of the collecting portion is welded to the connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936566.8A CN112582690A (en) | 2019-09-29 | 2019-09-29 | Flexible circuit board, die-cut substrate, and battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936566.8A CN112582690A (en) | 2019-09-29 | 2019-09-29 | Flexible circuit board, die-cut substrate, and battery device |
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| CN112582690A true CN112582690A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910936566.8A Pending CN112582690A (en) | 2019-09-29 | 2019-09-29 | Flexible circuit board, die-cut substrate, and battery device |
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| CN113097589A (en) * | 2021-03-31 | 2021-07-09 | 广东工业大学 | Battery device based on information acquisition keysets |
| CN114284623A (en) * | 2021-12-30 | 2022-04-05 | 上海摩软通讯技术有限公司 | Adjustable battery pack |
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Application publication date: 20210330 |