CN112787043A - Battery module and electric device - Google Patents
Battery module and electric device Download PDFInfo
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- CN112787043A CN112787043A CN202110126792.7A CN202110126792A CN112787043A CN 112787043 A CN112787043 A CN 112787043A CN 202110126792 A CN202110126792 A CN 202110126792A CN 112787043 A CN112787043 A CN 112787043A
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- circuit board
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- sheet body
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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 present disclosure provides a battery module and a power consumption device. The battery module comprises a plurality of battery cells, a circuit board, conductive pieces and insulating pieces, wherein each battery cell comprises lugs with opposite polarities, each insulating piece comprises a first sheet body, each conductive piece comprises a fixing portion and a lug connecting portion, the fixing portions are embedded in the first sheet bodies, the plurality of battery cells are connected in series to form a series connection path, two lugs at two ends of the series connection path are connected to the circuit board, and two lugs adjacent to and located in different battery cells in the series connection path are connected to the lug connecting portions. The electric device comprises the battery module. Under the condition that a plurality of electric cores establish ties and form the series connection route, compare with the condition that does not adopt electrically conductive, can reduce the quantity at the position that the utmost point ear of a plurality of electric cores is direct to be connected with the circuit board electricity when forming current circulation route, reduce generating heat of circuit board, reduce the space on the outstanding direct and circuit board electricity shared circuit board of utmost point ear, and then make electronic components's on the circuit board cloth spare space sufficient.
Description
Technical Field
The disclosure relates to the field of batteries, in particular to a battery module and an electric device.
Background
In the battery module of the series connection that adopts laminate polymer core, the utmost point ear of every electric core welds respectively on the PCB board to the utmost point ear that makes a plurality of electric cores passes through the PCB board and realizes current circulation route, and this results in the PCB board to bear the electric current position of process many, and the phenomenon of generating heat is serious, makes electronic components's on the PCB board cloth spare space not enough.
Disclosure of Invention
In view of the problems of the background art, an object of the present disclosure is to provide a battery module and an electric device that can solve the problems of a large number of current receiving portions and insufficient space of a PCB due to a large number of welding portions between the PCB and tabs at least when a plurality of cells form a current flow path.
In order to achieve the above object, in some embodiments, the present disclosure provides a battery module, which includes a plurality of battery cells, a circuit board, a conductive piece and an insulating piece, each of the battery cells includes tabs with opposite polarities, the insulating piece includes a first sheet, the conductive piece includes a fixing portion and a tab connecting portion, the fixing portion is embedded in the first sheet, the plurality of battery cells are connected in series to form a series connection path, two tabs at two ends of the series connection path are connected to the circuit board, and two tabs adjacent to and located in different battery cells in the series connection path are connected to the tab connecting portion.
In some embodiments, the tab connection part of the conductive member is embedded in the first sheet body, and the tab electrically connected to the tab connection part is embedded in the first sheet body; or the tab connecting part of the conductive part is exposed out of the first sheet body of the insulating part, and the tab electrically connected with the tab connecting part is electrically connected with the tab connecting part of the conductive part from the outside of the first sheet body.
In some embodiments, the tab of the plurality of cells in series electrically connected to the circuit board is electrically connected to the circuit board from outside the first sheet of the insulator.
In some embodiments, the first sheet of the insulator has a positioning recess, and the tab of the plurality of cells connected in series electrically connected to the circuit board surrounds the first sheet and passes through the positioning recess.
In some embodiments, the tab portion electrically connected to the circuit board in the plurality of cells connected in series is embedded in the first sheet of the insulating member and is partially exposed out of the first sheet of the insulating member and is electrically connected to the circuit board.
In some embodiments, the conductive member has a positioning notch, and the tab electrically connected to the circuit board in the plurality of cells connected in series surrounds the conductive member at a distance from the conductive member and passes through the positioning notch.
In some embodiments, each cell has a main body portion having first and second opposite end surfaces and two opposite side surfaces, each tab has a longitudinal direction and a transverse direction perpendicular to the longitudinal direction, each tab includes side surfaces on opposite sides of the transverse direction, a plurality of tabs are arranged side by side with the side surfaces facing the side surfaces, each tab extends outward from the first end surface of the main body portion along the longitudinal direction, and the two side surfaces are respectively adjacent to and face two side surfaces of the plurality of tabs arranged side by side; the battery comprises a plurality of battery cores, a plurality of battery cores and a plurality of battery modules, wherein the battery cores are arranged side by side from side to side, and all tabs of the batteries are positioned on the same side of the battery cores; the first sheet body of the insulating part is vertically arranged on the first end face of the corresponding battery cell.
In some embodiments, the insulating member further includes a second sheet intersecting with the first sheet and abutting against the first end face of the corresponding cell, and the circuit board stands on the second sheet in parallel with the first sheet.
In some embodiments, each cell is formed with an encapsulation portion extending outward from the first end face at the first end face, and each tab extends from the encapsulation portion; the corners of the packaging parts of the adjacent cells at the first end face are folded on the first end face; the bottom of the second sheet body opposite to the first end face of the battery cell is provided with an avoiding concave part, and the avoiding concave part accommodates the part, folded on the first end face, of the packaging part of the adjacent battery cell.
In some embodiments, the present disclosure provides an electric device including the battery module.
The beneficial effects of this disclosure are as follows: under the condition that a plurality of electric cores establish ties and form the series connection route, connect in the circuit board through two utmost point ears that are in series connection route both ends, two utmost point ears that adjacent and lie in different electric cores in the series connection route connect in utmost point ear connecting portion, realize the electric current circulation route from this, compare with the condition that does not adopt electrically conductive, can reduce the quantity at the position that the utmost point ear of a plurality of electric cores is directly connected with the circuit board electricity when forming the electric current circulation route, can reduce generating heat of circuit board, can reduce the direct space on the shared circuit board of being connected with the circuit board electricity of utmost point ear, and then make electronic components's on the.
Drawings
Fig. 1 is an assembled perspective view of a battery module according to an embodiment of the present disclosure.
Fig. 2 is a perspective view of fig. 1 from another angle.
Fig. 3 is a partially exploded perspective view of fig. 1.
Fig. 4 is a partially exploded perspective view of fig. 3 from another angle.
Fig. 5 is a further exploded perspective view based on fig. 3.
Fig. 6 is an exploded perspective view of fig. 5 from another angle.
Fig. 7 is a further exploded perspective view based on fig. 5.
Fig. 8 is an exploded perspective view of fig. 7 from another angle.
Fig. 9 is an exploded view of a plurality of cells of fig. 1.
Fig. 10 is a perspective view of a conductive member of the battery module of fig. 1.
Fig. 11 is an assembled perspective view of a conductive member and an insulating member according to another embodiment, in which the conductive member of fig. 10 is employed.
Fig. 12 is an assembled perspective view of the conductive member and the insulating member of fig. 11 with the battery cell and the pads shown but the circuit board not shown for clarity.
Fig. 13 is a plan view of fig. 12 as viewed from a first end face of the cell.
Fig. 14 is an assembled perspective view of a conductive member and an insulating member according to still another embodiment, in which a circuit board connection portion is not bent onto the insulating member.
Fig. 15 is a perspective view of fig. 14 from another angle.
Fig. 16 is an exploded perspective view of fig. 14.
Fig. 17 is an assembled perspective view of a conductive member and an insulating member according to still another embodiment of the present disclosure.
Fig. 18 is a schematic diagram of an example of an electric device employing a battery module according to the present disclosure.
Wherein the reference numerals are as follows:
100 battery module 3 conductive member
1 cell 31 holding part
11 utmost point ear 32 utmost point ear connection portion
111 side surface 33 circuit board connecting part
L longitudinal 34 positioning notch
T-transverse 4 insulation
12 body portion 41 first sheet
121 first end surface 411 positioning recess
122 second end face 412 fenestration
123 first surface 42 second sheet
124 second surface 421 avoiding the recess
125 side 5 pad
13 electric device for packaging part 200
2 Circuit Board
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," "third," and the like are used for descriptive and component identification purposes only and are not to be construed as relative importance and relationship to each other.
In the present disclosure, expressions of directions such as up, down, left, right, front, rear, and the like, which are used for explaining the configuration and action of each member of the battery module, are not absolute but relative, and are appropriate when each member of the battery module is in the posture shown in the drawings, but should be variably interpreted according to the change of the posture when the posture of each member of the battery module is changed.
Referring to fig. 1 to 17, in some embodiments, a battery module 100 includes a plurality of battery cells 1, a circuit board 2, a conductive member 3, and an insulating member 4.
Each cell 1 includes tabs 11 of opposite polarity. The insulator 4 includes a first blade 41. The conductive piece 3 includes a fixing portion 31 and a tab connecting portion 32, the fixing portion 31 is embedded in the first sheet 41, the plurality of battery cells 1 are connected in series to form a series connection path, two tabs 11 at two ends of the series connection path are connected to the circuit board 2, and two tabs 11 adjacent to and located in different battery cells 1 in the series connection path are connected to the tab connecting portion 32.
In the case where a plurality of battery cells 1 are connected in series to form a series path, the two tabs 11 located at both ends of the series path are connected to the circuit board 2 (i.e., an internal circuit (not shown) of the circuit board 2), the two tabs 11 adjacent to and located in different battery cells 1 in the series path are connected to the tab connecting portion 32, therefore, the current circulation path is realized, compared with the situation that the conductive piece is not adopted, the number of the parts of the lug 11 of the plurality of electric cores 1 which are directly and electrically connected with the circuit board 2 when the current circulation path is formed can be reduced, the heat generation of the circuit board 2 can be reduced, the occupied space of the lug 11 which is directly and electrically connected with the circuit board 2 on the circuit board 2 can be reduced, and the piece distributing space of the electronic components on the circuit board 2 is sufficient, under the condition that the electronic components of the circuit board 2 are kept the same, the size of the circuit board 2 can be reduced, and the energy density of the battery module 100 is improved; the holding part 31 of the conductive piece 3 is embedded in the first sheet body 41, and the insulating piece 4 (usually made of plastic) is lighter than the conductive piece 3 (usually made of metal, such as copper or aluminum), so that the conductive piece 3 is thinned as much as possible under the condition of ensuring excessive current, the overall weight and volume of the conductive piece 3 and the insulating piece 4 are reduced compared with the condition of simply using the conductive piece, and the energy density of the battery module 100 is improved; through the setting of insulating part 4, the structural strength of electrically conductive 3 has been improved to when receiving external vibration, keep the stability of the route that a plurality of electric core 1 electricity connect formation, and then ensure battery module 100's job stabilization nature.
In fig. 1, 2 and 12, two battery cells 11 are shown, wherein two adjacent tabs 11 of two battery cells 1 have opposite polarities and are electrically connected to a circuit board. Of course, the number of the battery cells 1 is not limited to this, and any number may be arranged according to the actual capacity requirement. Through the setting of insulating part 4, can be applicable to a plurality of electrically conductive pieces 3 (for example more than two electric core 1 in the picture electric core 1 of quantity realize establishing ties, two adjacent electric cores adopt an electrically conductive piece 3) and set up in same insulating part 4, improved a plurality of electrically conductive piece 3's overall structure intensity and integrated level. In some embodiments, referring to fig. 1 to 8, the tab connection part 32 of the conductive member 3 is embedded in the first sheet 41, and the tab 11 electrically connected to the tab connection part 32 is embedded in the first sheet 41. In this case, the conductive member 3 and the associated tab 11 are electrically connected (e.g., welded) first, and then the insulating member 4 is injection-molded such that the tab connection portion 32 of the conductive member 3 and the associated electrically connected tab 11 are embedded in the first sheet body 41. In this way, the material of the first sheet body 41 surrounds and holds the tab connecting portion 32 of the conductive member 3 and the electrical connection portion of the associated tab 11, and the resistance of the electrical connection portion against external impact is improved.
In some embodiments, referring to fig. 10 to 17, the tab connection portion 32 of the conductive member 3 is exposed from the first sheet 41 of the insulating member 4, and the tab 11 electrically connected to the tab connection portion 32 is electrically connected to the tab connection portion 32 of the conductive member 3 from the outside of the first sheet 41. In this case, the conductive member 3 and the insulating member 4 are first assembled or integrally molded (for example, by injection molding) such that the tab connection portion 32 of the conductive member 3 is exposed from the first sheet 41 of the insulating member 4, and then the tab 11 of the relevant battery cell 1 is electrically connected to the tab connection portion 32 of the conductive member 3. By adopting the mode, the quality of the electric connection between the lug 11 of the relevant electric core 1 and the lug connecting part 32 of the conductive piece 3 can be visually monitored, the operation quality is improved, and compared with the aforesaid situation that the lug 11 is firstly electrically connected with the lug connecting part 32 of the conductive piece 3 and then the insulation piece 4 is injection molded, the influence of injection molding pressure and injection molding temperature on the part of the lug 11 electrically connected with the lug connecting part 32 of the conductive piece 3 in the injection molding process of the insulation piece 4 is avoided.
In some embodiments, referring to fig. 11, 14 and 16, the tab connecting portion 32 of the conductive member 3 is exposed to the first sheet member 41 of the insulating member 4 through the window 412 of the first sheet member 41. In other embodiments, referring to fig. 17, the first sheet body 41 does not need to be provided with a window, and the tab connection portion 32 of the conductive member 3 directly extends from the first sheet body 41 of the insulating member 4, so that the tab connection portion 32 of the conductive member 3 is exposed from the first sheet body 41 of the insulating member 4.
In the case of a plurality of battery cells 1 connected in series, referring to fig. 1 to 4, in some embodiments, the tab 11 electrically connected to the circuit board 2 in the plurality of battery cells 1 connected in series is partially embedded in the first sheet 41 of the insulating member 4 and partially exposed from the first sheet 41 of the insulating member 4 and electrically connected to the circuit board 2. In this case, the tab 11 electrically connecting the conductive member 3 and the circuit board 2 is disposed at a distance, and then the insulating member 4 is molded by injection molding such that the tab 11 electrically connecting the circuit board 2 is partially embedded in the first sheet 41 of the insulating member 4 and partially exposed from the first sheet 41 of the insulating member 4, and the portion of the tab 11 electrically connecting the circuit board 2 exposed from the first sheet 41 of the insulating member 4 is used for electrical connection with the circuit board 2. In this way, the material of the first sheet body 41 surrounds and holds a portion of the tab 11 electrically connected to the circuit board 2, improving the resistance of the tab 11 electrically connected to the circuit board 2 against external impact. In order to improve positioning accuracy and operation efficiency, in some embodiments, referring to fig. 7 and 8, the conductive member 3 has a positioning notch 34, and the tab 11 electrically connected to the circuit board 2 in the plurality of cells 1 connected in series surrounds the conductive member 3 at a distance from the conductive member 3 and passes through the positioning notch 34.
In the case where a plurality of battery cells 1 are connected in series, referring to fig. 12, in some embodiments, the tab 11 electrically connected to the circuit board 2 in the plurality of battery cells 1 connected in series is electrically connected to the circuit board 2 from outside the first sheet body 41 of the insulator 4. The same applies to the configurations of the insulating member 4 and the conductive member 3 shown in fig. 14 to 17. By adopting the mode, the quality of the electric connection between the lug 11 of the relevant electric core 1 and the circuit board 2 can be visually monitored, the operation quality is improved, compared with the aforesaid spaced arrangement of the lug 11 and the conductive piece 3 before injection molding of the insulating piece 4, the influence of injection molding pressure and injection molding temperature on the spaced relative position of the lug 11 electrically connected with the circuit board 2 and the conductive piece 3 in the injection molding process of the insulating piece 4 is avoided, and the risk of accidental connection between the lug 11 electrically connected with the circuit board 2 and the conductive piece 3 in the injection molding process of the insulating piece 4 is reduced. In order to improve positioning accuracy and operation efficiency, in some embodiments, referring to fig. 11, 12, 14 to 17, the first sheet 41 of the insulator 4 has a positioning recess 411, and the tab 11 electrically connected to the circuit board 2 in the plurality of battery cells 1 connected in series surrounds the first sheet 41 and passes through the positioning recess 411.
In some embodiments, the conductive member 3 further includes a circuit board connection portion 33, and the circuit board connection portion 33 is exposed from the first sheet 41 and electrically connected (e.g., via the pad 5, see fig. 12 and 13) to an internal circuit (not shown) of the circuit board 2. The circuit board connection portion 33 is used for voltage acquisition. Of course, the voltage collection may be performed without using the circuit board connection portion 33 (i.e., omitting the circuit board connection portion 33) instead of using a separate collection line.
The size of the circuit board connection portion 33 is smaller than that of the portion of the tab 11 connected to the circuit board 2, thereby saving material usage and space occupation.
In order to adapt the battery module 100 to a large capacity and a thin profile, in some embodiments, referring to fig. 1 to 9, 12, and 13, the plurality of battery cells 1 are arranged side by side. Specifically, each of the battery cells 1 has a body portion 12, the body portion 12 has first and second opposite end surfaces 121 and 122 and two opposite side surfaces 125, and each of the tabs 11 has a longitudinal direction L and a transverse direction T perpendicular to the longitudinal direction L (see fig. 9). Each tab 11 includes side surfaces 111 on opposite sides in the transverse direction T, and a plurality of tabs 11 are arranged side by side with the side surfaces 111 to the side surfaces 111. Each tab 11 extends outward from the first end surface 121 of the main body 12 in the longitudinal direction L (i.e., the longitudinal direction L of each tab is the extending direction of the tab 11), and two side surfaces 125 are respectively adjacent to and face two side surfaces 111 of the plurality of tabs 11 arranged side by side; the plurality of battery cells 1 are arranged side by side with the side 125 opposite to the side 125, and all tabs 11 of the plurality of batteries are located on the same side of the plurality of battery cells 1; the first sheet 41 of the insulating member 4 is vertically disposed on the first end surface 121 of the corresponding battery cell 1.
Through a plurality of electric cores 1 with side 125 to side 125 side by side, all utmost point ears 11 of a plurality of batteries are located same one side of a plurality of electric cores 1 and first lamellar body 41 of insulating part 4 is established immediately on corresponding first terminal surface 121 of electric core 1, not only make battery module 100 be applicable to large capacity and slimming, but also can make full use of the space of the first terminal surface 121 department with one side of a plurality of electric cores 1, the space utilization rate has been improved, and then the energy density of battery module 100 has been improved. It should be noted that although in the drawings, the plurality of cells 1 are arranged in a row in a side-by-side arrangement, in order to improve capacity, such a row may be arranged in two rows in a direction perpendicular to the single row arrangement direction, and the two rows may share the insulating member 4. The opposing first and second surfaces 123, 124 are surrounded by the first and second end faces 121, 122 and the two side faces 125 from four sides, so that the six faces of the battery cell 1 form a hexahedral shape.
The plurality of tabs 11 are arranged side by side from the side surface 111 to the side surface 111, so that the one-dimensional size range of the first end surface 121 of each cell 1 is effectively utilized, and the tabs 11 of each cell 1 are prevented from interfering with each other in the process of electrically connecting the tabs 11 with the circuit board 2 or the conductive piece 3, and the convenience of operation and the working efficiency are improved. In the drawings, the number of the tabs 11 of each of the battery cells 1 is one, but the present invention is not limited to this, and it is necessary to increase the number of the positive electrode tabs and/or the negative electrode tabs and to process a plurality of positive electrode tabs and a plurality of negative electrode tabs, for example, to stack them into one positive electrode assembly and one negative electrode assembly, and to perform corresponding electrical connection, depending on the actual situation. Furthermore, the battery cell 1 may be a battery cell of a lithium ion battery, but is also applicable to any other battery cell of a secondary battery, such as a battery cell of a sodium ion battery, and a battery cell of a potassium ion battery.
In order to improve the structural stability, in some embodiments, referring to fig. 1 to 8, 11 to 12, and 13 to 17, the insulating member 4 further includes a second blade 42, the second blade 42 intersects with the first blade 41 and abuts against the first end surface 121 of the corresponding battery cell 1, and the circuit board 2 stands on the second blade 42 in parallel with the first blade 41. The second sheet 42 is L-shaped perpendicular to the first sheet 41. As described above, since the tab connection portion 32 of the conductive member 3 is electrically connected to the associated tab 11 and the circuit board connection portion 33 of the conductive member 3 is electrically connected to the internal circuit of the circuit board 2, the size of the circuit board 2 can be reduced compared to the case where no conductive member is used, and the circuit board 2 stands on the second sheet member 42 in parallel with the first sheet member 41, which not only makes full use of the space at the first end surface 121, but also provides structural support for the circuit board 2, so that the circuit board 2 is more resistant to external impact force (e.g., vibration) transmitted from the main body portion 12 of the electric core 1, and the working stability of the circuit board 2 is improved.
In the case that the tab 11 is electrically connected to the circuit board 2, the battery cell 1 belongs to a soft package battery cell (or a bag-type battery cell), and a metal plastic film (such as an aluminum plastic film, a steel plastic film, a copper plastic film, etc.) is generally used to form a packaging shell. As shown in fig. 6, 8, 9 and 12, each of the battery cells 1 is formed with a sealing portion 13 extending outward from the first end face 121 at the first end face 121, and each of the tabs 11 extends from the sealing portion 13. To facilitate placing the insulator 4 at the first end faces 121 of a plurality of cells 1 arranged side by side, the corners of the encapsulation 13 of adjacent cells 1 at the first end faces 121 are folded over the first end faces 121. Accordingly, as shown in fig. 11, 14 to 17, the bottom of the second sheet 42 opposite to the first end surface 121 of the battery cell 1 is provided with a relief recess 421, and the relief recess 421 accommodates a portion of the sealing portion 13 of the adjacent battery cell 1 folded on the first end surface 121. In addition, the adoption of the avoiding concave portion 421 enables the shape of the insulating member 4 to form a curved portion, which increases the structural strength of the insulating member 4, improves the external impact resistance of the insulating member 4, further improves the external impact resistance of the tab 11 arranged at the insulating member 4, and improves the stability of the electric connection part of the tab 11.
In some embodiments, the circuit board 2 is a flexible circuit board, and the flexibility of the flexible circuit board can improve the buffering capacity of the electric connection portion of the circuit board 2 and the associated tab 11 against external impact, thereby protecting the working stability of the electric connection portion.
In some embodiments, the material of the insulating member 4 combines insulation with good thermal conductivity, thereby improving heat dissipation capability for heat transferred via the conductive member 3. The material can be selected from composite phase change material of CN111793471A published in 10, 20 and 2020, and can also be selected from heat dissipation plastic.
Fig. 18 shows an example of an electric device 200 to which the battery module 100 of the present disclosure is applied. The electric device 200 is suitable for various terminal devices using a battery, such as electronic or electric devices or energy storage devices. The electronic or electric device may be a device used in a sea, road, or air environment, such as a mobile phone, a portable device, a notebook computer, a battery car, an electric car, a ship, a spacecraft, an electric toy, and an electric tool. Similarly, the energy storage device can also be used in a sea, road or air environment. Due to the advantages of high capacity and thinness, the battery module 100 of the present disclosure is particularly suitable for mobile phones and tablet computers.
The above detailed description describes exemplary embodiments, but is not intended to limit the combinations explicitly disclosed herein. Thus, unless otherwise specified, various features disclosed herein can be combined together to form a number of additional combinations that are not shown for the sake of brevity.
Claims (10)
1. A battery module comprises a plurality of battery cores, a circuit board, a conductive member and an insulating member,
each cell comprises lugs with opposite polarities,
the insulating piece comprises a first sheet body,
the conductive piece comprises a fixing part and a tab connecting part, the fixing part is embedded in the first sheet body,
a plurality of electric cores are connected in series to form a series connection path, wherein two tabs at two ends of the series connection path are connected to the circuit board, and two tabs adjacent to and located on different electric cores in the series connection path are connected to the tab connection portion.
2. The battery module according to claim 1,
a tab connecting part of the conductive piece is embedded in the first sheet body, and a tab electrically connected with the tab connecting part is embedded in the first sheet body; or
The tab connecting part of the conductive part is exposed out of the first sheet body of the insulating part, and a tab electrically connected with the tab connecting part is electrically connected with the tab connecting part of the conductive part from the outside of the first sheet body.
3. The battery module of claim 1, wherein the tab of the plurality of cells in series electrically connected to the circuit board is electrically connected to the circuit board from outside the first sheet of the insulator.
4. The battery module according to claim 3,
the first sheet body of the insulating part is provided with a positioning concave part, and tabs electrically connected with a circuit board in a plurality of battery cells connected in series encircle the first sheet body and penetrate through the positioning concave part.
5. The battery module according to claim 1,
the tab part electrically connected with the circuit board in the plurality of cells connected in series is embedded in the first sheet body of the insulating part, and part of the tab part is exposed out of the first sheet body of the insulating part and is electrically connected with the circuit board.
6. The battery module according to claim 5,
the conductive piece is provided with a positioning gap, and the tab electrically connected with the circuit board in the plurality of battery cells connected in series surrounds the conductive piece at a distance from the conductive piece and penetrates through the positioning gap.
7. The battery module according to claim 1,
each battery cell is provided with a main body part, the main body part is provided with a first end face and a second end face which are opposite and two side faces which are opposite,
each tab having a longitudinal direction and a transverse direction perpendicular to the longitudinal direction, each tab including side surfaces on opposite sides of the transverse direction, a plurality of tabs being juxtaposed side by side with the side surfaces facing the side surfaces, each tab extending longitudinally outwardly from the first end surface of the body portion,
the two side surfaces are respectively adjacent to and face two side surfaces in the plurality of lugs in parallel;
the battery comprises a plurality of battery cores, a plurality of battery cores and a plurality of battery modules, wherein the battery cores are arranged side by side from side to side, and all tabs of the batteries are positioned on the same side of the battery cores;
the first sheet body of the insulating part is vertically arranged on the first end face of the corresponding battery cell.
8. The battery module according to claim 7,
the insulating part further comprises a second sheet body, the second sheet body is intersected with the first sheet body and attached to the first end face of the corresponding battery cell, and the circuit board and the first sheet body stand on the second sheet body in parallel.
9. The battery module according to claim 8,
each battery cell is provided with a packaging part extending outwards from the first end surface at the first end surface, and each tab extends out of the packaging part;
the corners of the packaging parts of the adjacent cells at the first end face are folded on the first end face;
the bottom of the second sheet body opposite to the first end face of the battery cell is provided with an avoiding concave part, and the avoiding concave part accommodates the part, folded on the first end face, of the packaging part of the adjacent battery cell.
10. An electric device comprising the battery module according to any one of claims 1 to 9.
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| CN202110126792.7A CN112787043B (en) | 2021-01-29 | 2021-01-29 | Battery module and electric device |
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| CN202110126792.7A CN112787043B (en) | 2021-01-29 | 2021-01-29 | Battery module and electric device |
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| CN112787043A true CN112787043A (en) | 2021-05-11 |
| CN112787043B CN112787043B (en) | 2022-11-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094244A (en) * | 2021-11-22 | 2022-02-25 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
| CN114639904A (en) * | 2022-03-31 | 2022-06-17 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
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| CN114094244A (en) * | 2021-11-22 | 2022-02-25 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
| CN114639904A (en) * | 2022-03-31 | 2022-06-17 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
| CN114639904B (en) * | 2022-03-31 | 2024-03-15 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
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| CN112787043B (en) | 2022-11-08 |
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