CN213366741U - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
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- CN213366741U CN213366741U CN202022424949.8U CN202022424949U CN213366741U CN 213366741 U CN213366741 U CN 213366741U CN 202022424949 U CN202022424949 U CN 202022424949U CN 213366741 U CN213366741 U CN 213366741U
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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 present disclosure provides a battery including a protection circuit board and a plurality of cells. Each battery cell comprises a positive tab and a negative tab, and the positive tabs and the negative tabs of the plurality of battery cells are respectively electrically connected with the protection circuit board and form a series connection battery core group; the protection circuit board comprises a hard board part and a shunt part, wherein the shunt part comprises a first part, a second part and a third part, the second part electrically connects the first part with the third part, the third part is electrically connected with the hard board part, the first part is directly electrically connected with the positive pole or the negative pole of the serial electric core group, or the first part is electrically connected with the positive pole or the negative pole of the serial electric core group through the hard board part. The design of reposition of redundant personnel portion has reduced the electric current and has been in the stack of hardboard portion has reduced effectively the temperature rise of hardboard portion.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a battery.
Background
At present, along with the development of the quick charging technology, the current carried by the protection circuit board of the battery is larger and larger, in order to improve the charging speed of the battery, the prior art generally adopts the double connectors to charge, but the inflow current and the outflow current of the two connectors can be converged at the hard board part of the protection circuit board, so that the temperature of the hard board part is superposed, the temperature rise of the protection circuit board is intensified, and the overall safety of the battery is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, it is an object of the present disclosure to provide a battery capable of reducing at least part of the current on the hard plate portion, reducing the temperature rise of the protection circuit board.
In order to achieve the above object, in some embodiments, a battery includes a protection circuit board and a plurality of battery cells, each battery cell includes a positive tab and a negative tab, and the positive tab and the negative tab of the plurality of battery cells are respectively electrically connected with the protection circuit board and form a series battery core group; the protection circuit board comprises a hard board part and a shunt part, wherein the shunt part comprises a first part, a second part and a third part, the second part electrically connects the first part with the third part, the third part is electrically connected with the hard board part, the first part is electrically connected with the positive pole or the negative pole of the serial electric core group, or the first part is electrically connected with the positive pole or the negative pole of the serial electric core group through the hard board part.
In some embodiments, the hard plate portion comprises a positive terminal adjacent to the positive pole of the series connected set of electrical cores and a negative terminal adjacent to the negative pole of the series connected set of electrical cores, and the hard plate portion is further provided with a protection switch disposed at either the positive or negative terminal of the hard plate portion.
In some embodiments, the protection switches are arranged as at least one and are all located at the positive end of the hard board part, and the first part of the shunt part is electrically connected to the negative electrode of the serial electric core group; or the first part of the shunt part is electrically connected to the positive end of the hard board part and is electrically connected to the positive electrode of the series electric core group through the protection switch.
In some embodiments, the protection switch is disposed as at least one and located at the positive end of the hard board portion, the shunt portions are disposed as two, a first portion of one of the two shunt portions is electrically connected to the positive end of the protection circuit board and is electrically connected to the positive electrode of the serial electric core assembly through the protection switch, and a first portion of the other of the two shunt portions is electrically connected to the negative electrode of the serial electric core assembly.
In some embodiments, the protection switches are arranged to be at least one and are all positioned at the negative end of the hard board part, and the first part of the shunt part is electrically connected with the positive electrode of the serial electric core group; or the first part of the shunt part is electrically connected to the negative end of the hard board part and is electrically connected to the negative electrode of the serial electric core group through the protection switch.
In some embodiments, the protection switch is disposed as at least one and located at the negative end of the hard board portion, the shunt portions are disposed as two, a first portion of one of the shunt portions is electrically connected to the positive electrode of the serial electric core set, and a first portion of the other shunt portion is disposed at the negative end of the protection circuit board and is electrically connected to the negative electrode of the serial electric core set through the protection switch.
In some embodiments, the protection switches are provided in plurality and at least one protection switch is respectively arranged on the positive end and the negative end of the hard board part, and the first part of the shunt part is arranged on the positive end of the protection circuit board and is electrically connected to the positive electrode of the series electric core group through the protection switch; or the first part of the shunt part is arranged at the negative end of the protection circuit board and is electrically connected with the negative electrode of the series electric core group through the protection switch.
In some embodiments, the protection switches are provided in plurality, at least one protection switch is respectively arranged on the positive end and the negative end of the hard board part, the shunt parts are provided in two, a first part of one of the two shunt parts is arranged on the positive end of the protection circuit board and is electrically connected to the positive electrode of the serial electric core set through the corresponding protection switch, and a first part of the other of the two shunt parts is arranged on the negative end of the protection circuit board and is electrically connected to the negative electrode of the serial electric core set through the corresponding protection switch.
In some embodiments, the protection circuit board further includes two flexible board portions electrically connected to both ends of the hard board portion, each of the flexible board portions is provided with a connector, and the third portion is electrically connected to a connector of an adjacent flexible board portion via the hard board portion.
In some embodiments, the flexible board portion includes a first board and a second board spaced apart from the first board in a board thickness direction, and both sides of the first board and the second board in the board thickness direction are coated with heat dissipation coatings, respectively.
The beneficial effects of this disclosure are as follows: in the battery according to the present disclosure, the first part of the shunt part is electrically connected to the positive electrode or the negative electrode of the serial electric core group directly or via the hard plate part, and the third part is electrically connected to the hard plate part, so that the shunt part can draw out at least part of the current of the hard plate part, the superposition of the current on the hard plate part is reduced, the temperature rise of the hard plate part is effectively reduced, and the overall safety performance of the battery is improved.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of a battery according to the present disclosure, wherein arrows represent flow paths of current.
Fig. 2 is a schematic diagram of a second embodiment of a battery according to the present disclosure.
Fig. 3 is a schematic diagram of a third embodiment of a battery according to the present disclosure.
Fig. 4 is a schematic diagram of a fourth embodiment of a battery according to the present disclosure.
Fig. 5 is a schematic diagram of a fifth embodiment of a battery according to the present disclosure.
Fig. 6 is a schematic diagram of a sixth embodiment of a battery according to the present disclosure.
Fig. 7 is a schematic diagram of a seventh embodiment of a battery according to the present disclosure.
Fig. 8 is a schematic diagram of an eighth embodiment of a battery according to the present disclosure.
Fig. 9 is a schematic diagram of a ninth embodiment of a battery according to the present disclosure.
Fig. 10 is a schematic view of a soft plate portion of a battery according to the present disclosure.
Wherein the reference numerals are as follows:
1 protective circuit board 13 shunt part
11 first part of hard plate part 131
111 second part of protection switch 132
112 positive terminal 133 third section
113 negative terminal 2 series electric core group
12 flexible board part 21 electric core
Positive tab of 121 connector E1
122 first plate E2 negative tab
123 second plate 22 positive electrode
C heat dissipation coating 23 cathode
Detailed Description
The accompanying drawings illustrate embodiments of the present disclosure and it is to be understood that the disclosed embodiments are merely examples that can be embodied in various forms, and therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure.
In the description of the present disclosure, unless otherwise indicated, the terms "first," "second," and "third," etc. are used for descriptive and component identification purposes only and are not to be construed as being of relative importance and having a relationship to one another.
The battery according to the present disclosure includes a protection circuit board 1 and a plurality of battery cells 21.
The protection circuit board 1 includes a hard board portion 11 and a shunt portion 13.
The shunt portion 13 includes a first portion 131, a second portion 132, and a third portion 133, the second portion 132 electrically connecting the first portion 131 with the third portion 133, and the third portion 133 electrically connected to the hard plate portion 11. Preferably, the third portion 133 is electrically connected to an end of the hard plate portion 11 away from the first portion 131 in the extending direction of the hard plate portion 11. In an embodiment, the first portion 131 and the third portion 133 of the shunt part 13 may be nickel sheets, the second portion 132 may be a metal sheet electrically connecting the first portion 131 and the third portion 133, and the second portion 132 is electrically connected to the first portion 131 and the third portion 133 by welding; or the first, second and third portions 131, 132 and 133 are provided in the form of integrally formed nickel sheets; of course, without being limited thereto, the first portion 131, the second portion 132, and the third portion 133 of the flow dividing portion 13 may be provided in the form of a flexible board integrally formed with the hard board portion 11, but such a design in the form of a flexible board is costly as compared with the form of a welded connection. In the battery of the present disclosure, preferably, the shunt part 13 is foldable toward the hard plate part 11 to reduce the overall size of the protection circuit board 1, and when the second part 132 of the shunt part 13 is a metal sheet, an insulating film (e.g., an insulating adhesive paper) is further adhered to both sides of the metal sheet in the thickness direction, and the insulating film is provided to maintain insulation between the folded shunt part 13 and the hard plate part 11 in the thickness direction; of course, the shunt part 13 is not limited to this, and may be designed according to the use of the battery without being folded as shown in fig. 1 to 9.
In one embodiment, the protection circuit board 1 further includes two flexible board portions 12, the two flexible board portions 12 are electrically connected to two ends of the hard board portion 11, and each flexible board portion 12 is provided with a connector 121, and the connector 121 is used for electrically connecting with an external charging device or an electric device. The third portion 133 of the shunt portion 13 is electrically connected to the connector 121 of the adjacent flexible board portion 12 via the hard board portion 11. In one embodiment, the shunt part 13 and the two flexible board parts 12 may be integrally formed with the hard board part 11, that is, the protection circuit board 1 is provided in the form of a rigid-flex board, but the shunt part and the two flexible board parts may be formed separately and electrically connected together by soldering.
In one embodiment, as shown in fig. 10, the flexible board portion 12 includes a first board 122 and a second board 123 spaced apart from the first board 122 in the board thickness direction, and both sides of the first board 122 and the second board 123 in the board thickness direction are coated with heat dissipation platesAnd (7) coating C. Note that, in the known design, the flexible board portion is provided as a single-layer structure, and both sides of the flexible board portion of the single-layer structure in the board thickness direction are coated with the heat dissipation coating, whereas the total board thickness (sum of the board thicknesses of the first board 122 and the second board 123) of the first board 122 and the second board 123 of the present disclosure is in accordance with the thickness of the flexible board portion of the single-layer structure in the known design, and the total thickness of the heat dissipation coating C is equal to the total thickness of the heat dissipation coating of the flexible board portion of the single-layer structure in the known design. The calorific value formula of the material is Q ═ I2RT, the current of the flexible board portion of the known design is the same as the current of the flexible board portion 12 of the present disclosure, and the thickness of the two heat dissipation coatings of the known art is equal to the thickness of the four heat dissipation coatings of the present disclosure, and thus the heat Q generated by the flexible board portion 12 of the known design is equal to the heat Q generated by the flexible board portion 12 of the present disclosure, but the heat dissipation area of the four heat dissipation coatings C of the flexible board portion 12 of the present disclosure is twice as large as that of the two heat dissipation coatings of the known art, and thus the design of the four heat dissipation coatings C of the present disclosure can effectively cool the flexible board portion 12, and the overall safety of the battery is improved.
As shown in fig. 1 to 9, the tandem electric core group 2 includes a plurality of electric cells 21, each electric cell 21 includes a positive tab E1 and a negative tab E2, the positive tabs E1 and the negative tabs E2 of the plurality of electric cells 21 are electrically connected to the protection circuit board 1 respectively and form the tandem electric core group, wherein the positive tab E1 of one electric cell 21 serves as the positive electrode 22 of the tandem electric core group 2, and the negative tab E2 of another electric cell 21 serves as the negative electrode 23 of the tandem electric core group 2. The broken line in the drawing indicates a flow path of the series current of the plurality of battery cells 21 in the case where the series electric core group 2 is charged. In one embodiment, the series electric core group 2 includes two electric cores 21 connected in series, and the positive tab E1 and the negative tab E2 of the two electric cores 21 are electrically connected to the protection circuit board 1 respectively and form a series circuit.
The first portion 131 of the shunt part 13 is electrically connected to the positive electrode 22 or the negative electrode 23 of the serial electric core group 2 directly, or the first portion 131 is electrically connected to the positive electrode 22 or the negative electrode 23 of the serial electric core group 2 via the hard plate part 11.
In the battery according to the present disclosure, the first portion 131 of the shunt part 13 is electrically connected to the positive electrode 22 or the negative electrode 23 of the serial electric core group 2 directly or via the hard plate part 11, and the third portion 133 is electrically connected to the hard plate part 11, so that the shunt part 13 can draw out at least part of the electric current of the hard plate part 11, reduce the superposition of the electric current on the hard plate part 11, effectively reduce the temperature rise of the hard plate part 11, and thus improve the overall safety performance of the battery. In one embodiment, the impedance of the shunt part 13 is less than 10m Ω.
The hard plate portion 11 includes a positive terminal 112 adjacent to the positive electrode 22 of the serial electric core set 2 and a negative terminal 113 adjacent to the negative electrode 23 of the serial electric core set 2. The hard board portion 11 is further provided with a protection switch 111, and the protection switch 111 is provided at a plus terminal 112 or a minus terminal 113 of the hard board portion 11.
In the battery according to the present disclosure, the protection switch 111 has a plurality of arrangements, and correspondingly, the shunt part 13 has a plurality of arrangements, and the various arrangements of the shunt part 13 will be described in detail below, and in the following embodiments, the current will be described by taking the charging of the series electric core assembly 2 as an example.
In the three embodiments shown in fig. 1 to 3, the protection switch 111 is provided as at least one and is located at the positive end 112 of the hard board portion 11. Specifically, the protection switches 111 are provided in two.
In the first embodiment, as shown in fig. 1, the first portion 131 of the shunt part 13 is directly electrically connected to the negative electrode 23 of the serial electric core group 2. In this embodiment, the positive current introduced by the connector 121 near the positive terminal 112 flows into the positive electrode 22 of the serial electric core set 2 via the corresponding flexible board portion 12, hard board portion 11 and two protection switches 111, and then flows out from the negative electrode 23 of the serial electric core set 2, and the negative current flows out is introduced to the current dividing portion 13 via the first portion 131 electrically connected to the negative electrode 23, and then flows back to the hard board portion 11 via the third portion 133 of the current dividing portion 13, and then flows back to the connector 121 near the positive terminal 112; and the positive current introduced by the connector 121 close to the negative terminal 113 flows into the positive electrode 22 of the serial electric core assembly 2 through the corresponding soft plate part 12, hard plate part 11 and two protection switches 111, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing negative current flows back to the connector 121 close to the negative terminal 113 directly through the corresponding part of the hard plate part 11, soft plate part 12. In this embodiment, the shunt part 13 draws out the negative current of the connector 121 close to the positive terminal 112, avoiding the superposition of part of the negative current on the hard board part 11, effectively reducing the temperature rise of the hard board part 11.
In the second embodiment, as shown in fig. 2, unlike the first embodiment, the first portion 131 of the shunt part 13 is electrically connected to the positive terminal 112 of the hard board part 11 and to the positive electrode 22 of the serial electric core group 2 via the protection switch 111. In this embodiment, the positive current introduced by the connector 121 close to the positive terminal 112 flows into the positive electrode 22 of the serial electric core set 2 via the corresponding flexible board portion 12, hard board portion 11 and two protection switches 111, and then flows out from the negative electrode 23 of the serial electric core set 2, and the flowing negative current flows back from the hard board portion 11 to the connector 121 close to the positive terminal 112; and the positive current introduced by the connector 121 close to the negative terminal 113 flows into the positive electrode 22 of the serial electric core assembly 2 through the corresponding soft plate part 12, hard plate part 11, shunt part 13 and two protection switches 111, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing out negative current flows back to the connector 121 close to the negative terminal 113 directly through the corresponding part of hard plate part 11, the corresponding soft plate part 12. In this embodiment, the shunt portion 13 draws out the positive current of the connector 121 near the negative terminal 113, avoiding the superposition of part of the positive current on the hard board portion 11, effectively reducing the temperature rise of the hard board portion 11.
In the third embodiment, as shown in fig. 3, the shunt parts 13 are provided in two, the first part 131 of one of the two shunt parts 13 is electrically connected to the positive terminal 112 of the protection circuit board 1 and to the positive electrode 22 of the serial electric core group 2 via the protection switch 111, and the first part 131 of the other is electrically connected to the negative electrode 23 of the serial electric core group 2. In this embodiment, one of the shunt portions 13 draws out the positive current of the connector 121 near the negative terminal 113, avoiding the superposition of part of the positive current on the hard plate portion 11; the other shunt part 13 leads out the negative current of the connector 121 close to the positive terminal 112, so that the superposition of partial negative current on the hard board part 11 is avoided, and compared with the arrangement of one shunt part 13, the two shunt parts 13 can further reduce the superposition of current on the hard board part 11, and further reduce the temperature rise of the hard board part 11; in addition, the width of the hard plate portion 11 can be further reduced, space can be saved, and the capacity of the battery can be increased.
In the three embodiments shown in fig. 4 to 6, the protection switches 111 are provided as at least one and are all located at the negative terminal 113 of the hard board portion 11. Specifically, the protection switches 111 are provided in two.
In the fourth embodiment, as shown in fig. 4, the first portion 131 of the shunt part 13 is electrically connected to the positive electrode 22 of the serial electric core group 2. In this embodiment, the positive current introduced by the connector 121 close to the positive terminal 112 flows into the positive electrode 22 of the serial electric core set 2 through the corresponding flexible board part 12 and hard board part 11, and then flows out from the negative electrode 23 of the serial electric core set 2, and the flowing negative current flows back to the connector 121 close to the positive terminal 112 through the two protection switches 111 and hard board part 11; and the positive current introduced by the connector 121 close to the negative terminal 113 is introduced into the current dividing part 13 via the flexible board part 12 and the third part 133 electrically connected with the hard board part 11, then flows into the positive electrode 22 of the serial electric core assembly 2 via the first part 131, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing-out negative current directly flows back to the connector 121 close to the negative terminal 113 via the two protection switches 111, the corresponding part of the hard board part 11 and the corresponding flexible board part 12. In this embodiment, the shunt portion 13 draws out the positive current of the connector 121 near the negative terminal 113, reducing the superposition of part of the positive current on the hard board portion 11, reducing the temperature rise of the hard board portion 11.
In the fifth embodiment, as shown in fig. 5, the first portion 131 of the shunt part 13 is electrically connected to the negative terminal 113 of the hard plate part 11 and to the negative electrode 23 of the serial electric core group 2 via the protection switch 111. In this embodiment, the positive current introduced by the connector 121 near the positive terminal 112 flows into the positive electrode 22 of the serial electric core pack 2 via the corresponding flexible board portion 12 and hard board portion 11, and then flows out from the negative electrode 23 of the serial electric core pack 2, and the negative current flowing out is introduced into the shunt portion 13 via the two protection switches 111, the first portion 131 electrically connected to the hard board portion 11, and then flows back to the hard board portion 11 via the third portion 133 of the shunt portion 13, and then flows back to the connector 121 near the positive terminal 112; and the positive current introduced by the connector 121 close to the negative terminal 113 flows into the positive electrode 22 of the serial electric core assembly 2 through the corresponding soft plate part 12 and hard plate part 11, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing negative current flows back to the connector 121 close to the negative terminal 113 directly through the two protection switches 111, the corresponding part of the hard plate part 11 and the soft plate part 12. In this embodiment, the negative current of the connector 121 near the positive terminal 112 is introduced to the shunt part 13 via the first part 131 electrically connected to the hard plate part 11, reducing the superposition of part of the negative current on the hard plate part 11, reducing the temperature rise of the hard plate part 11.
In the sixth embodiment, as shown in fig. 6, the shunt parts 13 are provided in two, the first part 131 of one of the two shunt parts 13 is electrically connected to the positive electrode 22 of the serial electric core group 2, and the first part 131 of the other one is provided to the negative terminal 113 of the protection circuit board 1 and is electrically connected to the negative electrode 23 of the serial electric core group 2 via the protection switch 111. In this embodiment, one of the shunt portions 13 draws out the positive current of the connector 121 near the negative terminal 113, avoiding the superposition of part of the positive current on the hard plate portion 11; the other shunt part 13 leads out the negative current of the connector 121 close to the positive terminal 112, so that the superposition of partial negative current on the hard board part 11 is avoided, and compared with the arrangement of one shunt part 13, the two shunt parts 13 can further reduce the superposition of current on the hard board part 11, and further reduce the temperature rise of the hard board part 11; in addition, the width of the hard plate portion 11 can be further reduced, space can be saved, and the capacity of the battery can be increased.
In the three embodiments shown in fig. 7 to 9, the protection switch 111 is provided in plurality and at least one protection switch 111 is arranged at each of the positive terminal 112 and the negative terminal 113 of the hard board portion 11. In this embodiment, the positive terminal 112 and the negative terminal 113 of the hard board portion 11 are respectively provided with one protection switch 111.
In the seventh embodiment, as shown in fig. 7, the first portion 131 of the shunt part 13 is provided to the positive terminal 112 of the protection circuit board 1 and is electrically connected to the positive electrode 22 of the serial electric core group 2 via the protection switch 111. In this embodiment, the positive current introduced by the connector 121 close to the positive terminal 112 flows into the positive electrode 22 of the serial electric core assembly 2 via the flexible board part 12, the hard board part 11 and the corresponding protection switch 111, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing negative current flows back into the connector 121 close to the positive terminal 112 via the corresponding protection switch 111 and the hard board part 11; and the positive current introduced by the connector 121 close to the negative terminal 113 is introduced into the current dividing part 13 through the flexible board part 12 and the third part 133 electrically connected with the hard board part 11, then flows into the positive electrode 22 of the serial electric core assembly 2 through the first part 131 and the corresponding protection switch 111, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing-out negative current directly flows back to the connector 121 close to the negative terminal 113 through the corresponding one protection switch 111, the hard board part 11 and the flexible board part 12. In this embodiment, the shunt portion 13 draws out the positive current of the connector 121 near the negative terminal 113, reducing the superposition of part of the positive current on the hard board portion 11, reducing the temperature rise of the hard board portion 11.
In the eighth embodiment, as shown in fig. 8, the first portion 131 of the shunt part 13 is provided at the negative terminal 113 of the protection circuit board 1 and is electrically connected to the negative electrode 23 of the serial electric core group 2 via the protection switch 111. In this embodiment, the positive current introduced by the connector 121 near the positive terminal 112 flows into the positive electrode 22 of the serial electric core group 2 via the corresponding soft plate portion 12, hard plate portion 11 and corresponding protection switch 111, and then flows out from the negative electrode 23 of the serial electric core group 2, and the negative current flowing out is introduced into the current dividing portion 13 via the corresponding protection switch 111, the first portion 131 electrically connected to the hard plate portion 11, and then flows back to the connector 121 near the positive terminal 112 via the corresponding portion of the hard plate portion 11, soft plate portion 12; and the positive current introduced by the connector 121 close to the negative terminal 113 flows into the positive electrode 22 of the serial electric core assembly 2 through the flexible board part 12, the hard board part 11 and the corresponding protection switch 111, and then flows out from the negative electrode 23 of the serial electric core assembly 2, and the flowing-out negative current flows back to the connector 121 close to the negative terminal 113 directly through the corresponding protection switch 111, the corresponding part of the hard board part 11 and the flexible board part 12. In this embodiment, the shunt part 13 draws out the negative current of the connector 121 near the positive terminal 112, reducing the superposition of part of the negative current on the hard panel part 11, reducing the temperature rise of the hard panel part 11.
In the ninth embodiment, as shown in fig. 9, the shunt parts 13 are provided in two, the first part 131 of one of the two shunt parts 13 is provided at the positive terminal 112 of the protection circuit board 1 and is electrically connected to the positive electrode 22 of the serial electric core group 2 via the corresponding protection switch 111, and the first part 131 of the other is provided at the negative terminal 113 of the protection circuit board 1 and is electrically connected to the negative electrode 23 of the serial electric core group 2 via the corresponding protection switch 111. In this embodiment, one of the shunt portions 13 draws out the positive current of the connector 121 near the negative terminal 113, avoiding the superposition of part of the positive current on the hard plate portion 11; the other shunt part 13 leads out the negative current of the connector 121 close to the positive terminal 112, so that the superposition of partial negative current on the hard board part 11 is avoided, and compared with the arrangement of one shunt part 13, the two shunt parts 13 can further reduce the superposition of current on the hard board part 11, and further reduce the temperature rise of the hard board part 11; in addition, the width of the hard plate portion 11 can be further reduced, space can be saved, and the capacity of the battery can be increased.
It should be noted that, in all the embodiments described above, the third portion 133 is electrically connected to the hard board portion 11, and preferably, the third portion 133 is electrically connected to one end of the hard board portion 11 away from the first portion 131, and the area of the shunt portion 13 across the hard board portion 11 is larger as the third portion 133 is closer to the end of the hard board portion 11 away from the first portion 131, the shorter the path through which the current drawn via the shunt portion 13 flows in the hard board portion 11 is, so that the temperature rise of the hard board portion 11 can be further reduced.
Claims (10)
1. A battery comprises a protection circuit board and a plurality of battery cores, and is characterized in that,
each battery cell comprises a positive tab and a negative tab, and the positive tabs and the negative tabs of the plurality of battery cells are respectively electrically connected with the protection circuit board and form a series connection battery core group;
the protection circuit board includes a hard board portion and a shunt portion,
the shunt portion includes a first portion, a second portion that electrically connects the first portion with the third portion, and a third portion that is electrically connected to the hard plate portion,
the first part is electrically connected to the positive electrode or the negative electrode of the serial electric core group, or the first part is electrically connected to the positive electrode or the negative electrode of the serial electric core group through the hard board part.
2. The battery according to claim 1,
the hard plate part comprises a positive terminal close to the positive electrode of the serial electric core group and a negative terminal close to the negative electrode of the serial electric core group,
the hard board part is further provided with a protection switch, and the protection switch is arranged at the positive end or the negative end of the hard board part.
3. The battery of claim 2, wherein the protection switches are provided as at least one and are each located at the positive end of the hard plate portion,
the first part of the shunt part is electrically connected to the negative electrode of the serial electric core group;
or
The first part of the shunt part is electrically connected to the positive end of the hard board part and is electrically connected to the positive electrode of the series electric core group through the protection switch.
4. The battery of claim 2, wherein the protection switches are provided as at least one and are each located at the positive end of the hard plate portion,
the shunt parts are arranged in two, the first part of one of the two shunt parts is electrically connected to the positive end of the protective circuit board and is electrically connected to the anode of the series electric core group through the protective switch,
the first part of the other one is electrically connected to the negative electrode of the serial electric core group.
5. The battery of claim 2, wherein the protection switches are provided as at least one and are each located at a negative end of the hard plate portion,
the first part of the shunt part is electrically connected to the positive electrode of the serial electric core group;
or
The first part of the shunt part is electrically connected to the negative end of the hard board part and is electrically connected to the negative electrode of the series electric core group through the protection switch.
6. The battery of claim 2, wherein the protection switches are provided as at least one and are each located at a negative end of the hard plate portion,
the number of the shunt parts is two, the first part of one of the two shunt parts is electrically connected with the anode of the serial electric core group,
the first part of the other one is arranged at the negative end of the protection circuit board and is electrically connected with the negative electrode of the serial electric core group through the protection switch.
7. The battery according to claim 2, wherein the protection switch is provided in plurality and at least one of the protection switches is arranged at each of positive and negative terminals of the hard plate portion,
the first part of the shunt part is arranged at the positive end of the protective circuit board and is electrically connected to the positive electrode of the series electric core group through the protective switch;
or
The first part of the shunt part is arranged at the negative end of the protection circuit board and is electrically connected with the negative electrode of the series electric core group through the protection switch.
8. The battery according to claim 2,
the protection switch is provided in plurality, at least one protection switch is arranged at the positive end and the negative end of the hard board part respectively,
the number of the shunt parts is two, the first part of one of the two shunt parts is arranged at the positive end of the protective circuit board and is electrically connected with the anode of the series electric core group through the corresponding protective switch,
the first part of the other one is arranged at the negative end of the protection circuit board and is electrically connected with the negative electrode of the serial electric core group through the corresponding protection switch.
9. The battery according to claim 1, wherein the protection circuit board further includes two flexible board portions electrically connected to both ends of the hard board portion, each of the flexible board portions being provided with a connector, and the third portion being electrically connected to a connector of an adjacent flexible board portion via the hard board portion.
10. The battery according to claim 9, wherein the flexible plate portion includes a first plate and a second plate spaced from the first plate in a plate thickness direction, and both sides of the first plate and the second plate in the plate thickness direction are coated with heat dissipation coatings, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022424949.8U CN213366741U (en) | 2020-10-27 | 2020-10-27 | Battery with a battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022424949.8U CN213366741U (en) | 2020-10-27 | 2020-10-27 | Battery with a battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213366741U true CN213366741U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022424949.8U Active CN213366741U (en) | 2020-10-27 | 2020-10-27 | Battery with a battery cell |
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| Country | Link |
|---|---|
| CN (1) | CN213366741U (en) |
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