CN113097654A - Battery module - Google Patents
Battery module Download PDFInfo
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- CN113097654A CN113097654A CN202110347125.1A CN202110347125A CN113097654A CN 113097654 A CN113097654 A CN 113097654A CN 202110347125 A CN202110347125 A CN 202110347125A CN 113097654 A CN113097654 A CN 113097654A
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- tab
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a battery module, which comprises a plurality of battery core assemblies and a busbar, wherein each battery core assembly comprises a battery cell unit, a positive terminal and a negative terminal, a plurality of conductive pieces of the busbar are arranged at intervals to form a plurality of first avoidance positions, the busbar accommodates at least one of the positive terminal and the negative terminal through the first avoidance positions, and at least one of the positive terminal and the negative terminal is electrically connected with an extension part. Therefore, the bus bar is more conveniently fixed between the positive electrode end and the negative electrode end without using a model tool, the production cost of the battery module is reduced, and the production efficiency of the battery module is improved.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery module.
Background
To realize the modular production of assembled battery assembly and improve the production efficiency, the problem of welding the electrode lugs of the battery core must be solved. In the prior art, tabs of a plurality of battery cells in an assembled battery usually need to extend out of tab holes of a busbar, and then the plurality of battery cells need to be connected in series and parallel. However, the tab typically requires more mold tooling to pass through the tab hole. When the number of the electric cores is large, the production efficiency is low and the production cost is high.
Disclosure of Invention
The embodiment of the invention aims to provide a battery module, which solves the problems that a bus bar is complex to install and the short circuit risk is high in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a battery module, including:
the battery cell module comprises a plurality of battery cell assemblies, and each battery cell assembly comprises a battery cell unit, a positive terminal and a negative terminal;
the busbar, the busbar set up in the first side of electricity core module, the busbar includes main part and a plurality of electrically conductive piece, a plurality of electrically conductive piece are in set up side by side in the main part, and the extension of first side department of main part is formed with a plurality of extensions, arbitrary adjacent two be formed with the first position of dodging between the extension, the first position of dodging is used for acceping the positive terminal with at least one of negative pole end, the positive terminal with at least one of negative pole end with the extension electricity is connected.
Optionally, the plurality of extension portions are arranged side by side along a first direction, and the plurality of cell assemblies are stacked along the first direction.
Optionally, the main body is formed by connecting a plurality of connecting plates side by side, two adjacent connecting plates are detachably fixed to each other, and the plurality of conductive pieces are correspondingly arranged on the plurality of connecting plates one to one.
Optionally, the first end of the connecting plate is bent to form a bent portion, the bent portion includes the first side, the plurality of connecting plates are detachably fixed along a second direction, and the second direction is perpendicular to the first direction.
Optionally, the electric core assembly includes a first sub-side surface, the positive terminal and the negative terminal are both located on the first sub-side surface, and the first side surface includes the first sub-side surface.
Optionally, the positive terminal includes a tab lead and a first electrode plate, and the negative terminal includes a tab lead and a second electrode plate;
the first electrode plate and the second electrode plate are arranged oppositely, or the first electrode plate and the second electrode plate are arranged side by side.
Optionally, the cell assembly further includes a support frame, the support frame is used for fixing the cell units, and the support frames of the plurality of cell assemblies are connected in a stacked manner;
the supporting frame comprises the first sub-side face, the first sub-side face comprises a second avoidance position, and the second avoidance position is used for accommodating the positive terminal and the negative terminal.
Optionally, one of a buckle and a clamping groove is arranged on the support frame, the other of the buckle and the clamping groove is arranged on the first side, and the busbar and the battery cell module are fixedly connected through the buckle and the clamping groove.
Optionally, the battery cell unit includes a plurality of battery cells, and the plurality of battery cells are connected in series or in parallel to form the positive terminal and the negative terminal;
the plurality of battery cells comprise a first battery cell and a second battery cell which are adjacent, a first positive electrode lug and a first negative electrode lug are arranged on the second sub-side surface of the first battery cell, and a second positive electrode lug and a second negative electrode lug are arranged on the third sub-side surface of the second battery cell;
at least one of the first positive tab and the first negative tab is fixedly welded with at least one of the second positive tab and the second negative tab, and the first battery cell and the second battery cell are connected in series or in parallel through the first positive tab, the first negative tab, the second positive tab and the second negative tab.
Optionally, the first battery cell and the second battery cell are arranged side by side, and the second sub-side surface and the third sub-side surface are arranged oppositely.
One of the above technical solutions has the following advantages or beneficial effects:
the embodiment of the invention provides a battery module, which comprises a plurality of battery core assemblies and a busbar, wherein each battery core assembly comprises a battery cell unit, a positive end and a negative end, a plurality of conductive pieces of the busbar are arranged at intervals to form a plurality of first avoidance positions, the first avoidance positions are used for accommodating at least one of the positive end and the negative end, and at least one of the positive end and the negative end is electrically connected with an extension part. The busbar passes through first dodge the position and accept the positive terminal and the negative pole end of battery module group, first dodge a position side opening, it is right when the busbar is installed, the positive terminal with the negative pole end stretches into more easily first dodge the position, and need not to use model instrument, has not only reduced the cost of production of battery module still makes the equipment of battery module is more simple and convenient, has improved the yield efficiency of battery module.
Drawings
Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bus bar according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electric core assembly according to an embodiment of the present invention;
fig. 5 is a second schematic structural diagram of an electrical core assembly according to an embodiment of the present invention;
fig. 6 is an exploded view of an electric core assembly according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides a battery module, including:
a cell module including a plurality of cell assemblies 100, each cell assembly 100 including a cell unit 150, a positive terminal, and a negative terminal;
In the embodiment of the present invention, as shown in fig. 1, a plurality of core assemblies 100 constitute the cell module, each core assembly 100 includes a positive terminal and a negative terminal, where the positive terminal and the negative terminal can be understood as output electrodes of the core assembly 100, and are final output electrodes based on a series-parallel relationship of cells inside the core assembly 100, and can also be referred to as tabs of the core assembly 100. The positive terminal is the output positive pole of the cell assembly 100, and the negative terminal is the output negative pole of the cell assembly 100.
The bus bar 200 is designed as the structure shown in fig. 2, the extending portions of the conductive pieces 210 are distributed on the first side of the main body of the bus bar 200 in a toothed manner, and then any two adjacent extending portions can be formed with a first avoiding portion 220, and the first avoiding portion 220 can accommodate at least one of the positive terminal and the negative terminal, so that the positive terminal and the negative terminal can be electrically connected with the extending portions.
It should be noted that the serial-parallel relationship between the plurality of core assemblies 100 can be adjusted by the bus bar 200, which can be determined according to practical situations, and the embodiment of the present invention is not limited herein.
Based on the above-described structure of the battery module, when the bus bar 200 is mounted, the position of the first avoidance portion 220 on the bus bar 200 may be correspondingly determined based on the position of the output electrode of each cell assembly 100, so that the extension portion is in contact with and electrically connected to at least one of the positive terminal or the negative terminal. The fixing between the bus bar 200 and the output electrode can be rapidly completed without using a model tool, so that the production cost of the battery module is reduced, the assembly of the battery module is simpler and more convenient, and the production efficiency of the battery module is improved.
It should be noted that the cell unit may include one or more cells, and the number of the cells may be determined according to an actual situation, and the embodiment of the present invention is not limited herein.
Optionally, the plurality of extension portions are arranged side by side along a first direction, and the plurality of cell assemblies are stacked along the first direction.
Wherein the first direction may be understood as the a-a direction as shown in fig. 2 and 3.
In this embodiment, the direction of the extension parts of the bus bar 200 is the same as the direction of the stacked electric core assembly 100, when the bus bar 200 is installed, the extension parts can be placed along the B-B direction, and the distance between the conductive piece 210 of the bus bar 200 and the positive terminal and the negative terminal of the electric core assembly 100 is relatively short and staggered, so that the conductive piece 210 and the positive terminal and the negative terminal are more conveniently fixed.
Further, optionally, the main body is formed by connecting a plurality of connecting plates side by side, two adjacent connecting plates are detachably fixed to each other, and the plurality of conductive pieces are correspondingly arranged on the plurality of connecting plates one to one.
In this embodiment, as shown in fig. 2, the bus bar 200 is formed by splicing a plurality of connecting plates side by side, the number of the connecting plates may be determined according to the number of the electric core assemblies 100, and one of the connecting plates is provided with one conductive member 210. When the battery module needs to install additional or dismantle electric core subassembly 100, what busbar 200 can correspond installs additional or dismantles the connecting plate for busbar 200's dismouting is more nimble, can satisfy the demand of the electric core subassembly 100 of different quantity.
In this embodiment, as shown in fig. 2, the first ends of the connecting plates are bent to form bent portions, the bent portions include the first side edges, and the connecting plates are detachably fixed along a second direction, which is perpendicular to the first direction.
Wherein said second direction may be understood as the B-B direction as shown in fig. 2.
In this implementation form, the first end of the connecting plate is bent to form a bent portion, so that the bent portion of the connecting portion and the other portions except the bent portion form a certain angle, the bent portion extends along the B-B direction, and the other portions except the bent portion extend along the a-a direction, so that the busbar 200 is finally collected on at least one end surface of the electrical core module, and the adjustment of the series-parallel connection relationship between the electrical core assemblies 100 is more conveniently completed.
Optionally, the electric core assembly includes a first sub-side surface, the positive terminal and the negative terminal are both located on the first sub-side surface, and the first side surface includes the first sub-side surface.
In this embodiment, as shown in fig. 3, the output electrodes of each cell assembly 100 face the uniform side of the cell modules and are arranged regularly. Such an arrangement can correspond to the arrangement of the conductive members 210 of the bus bar 200, more facilitating the installation of the bus bar 200, and more facilitating the fixation of the positive and negative terminals to the conductive members 210.
Optionally, as shown in fig. 4, the positive terminal includes a tab lead and a first electrode tab 110, and the negative terminal includes a tab lead and a second electrode tab 120;
the first electrode sheet 110 and the second electrode sheet 120 are disposed at intervals, opposite to each other, or the first electrode sheet 110 and the second electrode sheet 120 are disposed at intervals side by side.
In the present embodiment, the first electrode sheet 110 is connected to a tab lead to form the positive electrode terminal, and the second electrode sheet 120 is connected to a tab lead to form the negative electrode terminal. The first and second electrode sheets 110 and 120 may be directly contact-connected with the extension portion, thereby making the installation of the bus bar 200 more convenient.
In a specific implementation form, as shown in fig. 4, the first electrode sheet 110 and the second electrode sheet 120 are arranged side by side at intervals, and the first electrode sheet 110 and the second electrode sheet 120 are insulated and do not interfere with each other, so that the risk of short circuit of the electric core assembly 100 is reduced.
In another implementation form, as shown in fig. 5, the first electrode plate 110 and the second electrode plate 120 are spaced apart from each other to reduce the number of positions for disposing the electrode plates on the electric core assembly 100, thereby simplifying the structure of the electric core assembly 100. It is understood that the size and structure of the first electrode sheet 110 and the second electrode sheet 120 may be determined according to specific situations, and the embodiment of the present invention is not limited herein.
Optionally, as shown in fig. 6, the cell assembly 100 further includes a support frame 130, the support frame 130 is used for fixing the cell units 150, and the support frames 130 of the plurality of cell assemblies 100 are connected in a stacked manner;
the support frame 130 includes a second avoidance position for accommodating the positive terminal and the negative terminal.
In this embodiment, the supporting frame 130 is made of an insulating material, and the battery cell unit 150 can be supported and the position of the battery cell in the battery cell unit 150 can be fixed by the supporting frame 130, so that a gap exists between adjacent battery cells, and short circuit is avoided. In addition, the support frame 130 is provided with a second avoidance position, and the second avoidance position can enable the positive terminal and the negative terminal to extend out of the support frame 130, so that the positive terminal and the negative terminal are connected with the bus bar 200 conveniently.
In a specific implementation, the fixing connection manner between the battery cell unit 150 and the supporting frame 130 may be specifically determined according to the structure of the supporting frame 130, and the number and arrangement manner of the battery cells in the battery cell unit 150. For example, the supporting frame 130 may be a frame body with a hollow middle part, and the cell unit 150 may be clamped in the supporting frame 130; alternatively, the support frame 130 may be a non-hollow frame, and the cell unit 150 may be bonded to the support frame 130.
In one implementation form, one of a buckle or a slot is disposed on the supporting frame 130, the other of the buckle or the slot is disposed on the first side, and the bus bar 200 and the battery cell module are fixedly connected through the buckle and the slot.
In one implementation form, as shown in fig. 1, the battery module further includes two end plates 300, the cell module further includes a second side and a third side, which are opposite to each other, the second side and the third side are both adjacent to the first side and perpendicular to the stacking direction of the cell assembly 100, one of the two end plates 300 is disposed on the second side, and the other of the two end plates 300 is disposed on the third side. The end plates 300 may protect the cell units 150 exposed on both end surfaces.
Optionally, as shown in fig. 4, the cell unit 150 includes a plurality of cells, and the plurality of cells are connected in series or in parallel to form the positive terminal and the negative terminal;
the plurality of battery cells comprise a first battery cell 101 and a second battery cell 102 which are adjacent to each other, a second sub-side surface of the first battery cell 101 is provided with a first positive tab 1011 and a first negative tab 1012, and a third sub-side surface of the second battery cell 102 is provided with a second positive tab 1021 and a second negative tab 1022;
at least one of the first positive tab 1011 and the first negative tab 1012 is welded and fixed with at least one of the second positive tab 1021 and the second negative tab 1022, and the first cell 101 and the second cell 102 are connected in series or in parallel through the first positive tab 1011, the first negative tab 1012, the second positive tab 1021 and the second negative tab 1022.
It should be noted that fig. 4 is only an example of one positional relationship between the first battery cell 101 and the first battery cell 102 in a specific embodiment, and a specific implementation form of the positional relationship between the first battery cell 101 and the first battery cell 102 may be determined according to an actual situation, and the embodiment of the present invention is not limited herein.
In this embodiment, the first battery cell 101 includes a first tab pair, which is a first positive tab 1011 and a first negative tab 1012, and the second battery cell 102 includes a second tab pair, which is a second positive tab 1021 and a second negative tab 1022. Any adjacent first battery cell 101 and first battery cell 102 are connected in series or in parallel through the first positive tab 1011, the first negative tab 1012, the second positive tab 1021 and the second negative tab 1022, so that a plurality of battery cells are connected in series and/or in parallel to form a whole. The connection relationship between the first battery cell 101 and the second battery cell 102 may include at least five of the following cases:
in the first case, the first positive tab 1011 and the second positive tab 1021 are welded and fixed, and the first negative tab 1012 and the second negative tab 1022 are not welded and fixed. In this case, the first cell 101 and the first cell 102 are connected in parallel.
In the second case, the first positive tab 1011 and the second negative tab 1022 are welded and fixed, and the first negative tab 1012 and the second positive tab 1021 are not welded and fixed. In this case, the first cell 101 and the first cell 102 are connected in series.
In the third case, the first negative tab 1012 and the second negative tab 1022 are welded and fixed, and the first positive tab 1011 and the second positive tab 1021 are not welded and fixed. In this case, the first cell 101 and the first cell 102 are connected in parallel.
In the fourth case, the first negative tab 1012 and the second positive tab 1021 are welded and fixed, and the first positive tab 1011 and the second negative tab 1022 are not welded and fixed. In this case, the first cell 101 and the first cell 102 are connected in series.
In the fifth case, the first positive tab 1011 and the second positive tab 1021 are welded and fixed, and the first negative tab 1012 and the second negative tab 1022 are welded and fixed. In this case, the first cell 101 and the first cell 102 are connected in parallel.
In one implementation form, the first cell 101 and the second cell 102 are arranged side by side, and the second sub-side is arranged opposite to the third sub-side.
In this implementation form, as shown in fig. 4, the first battery cell 101 and the first battery cell 102 are arranged side by side, and the second sub-side face and the third sub-side face are arranged opposite to each other, so that the first tab pair and the second tab pair are also arranged opposite to each other. Like this, improved the welding first utmost point ear to with the simple operation degree of second utmost point ear pair, and first utmost point ear to with the stability of being connected of second utmost point ear pair.
Further, in a specific implementation form, the first positive tab 1011 is disposed opposite to any one of the second positive tab 1021 and the second negative tab 1022; the first negative tab 1012 is disposed opposite the other of the second positive tab 1021 and the second negative tab 1022.
In this implementation form, two situations may be specifically included:
in the first case, the first positive tab 1011 is disposed opposite the second positive tab 1021, and the first negative tab 1012 is disposed opposite the second negative tab 1022. When the first positive tab 1011 and the second positive tab 1021 are welded and fixed, it can be considered that the first end of the first cell 101 is connected in parallel with the first end of the first cell 102; in the case where the first negative electrode tab 1012 and the second negative electrode tab 1022 are welded and fixed, the second end of the first battery cell 101 and the second end of the first battery cell 102 may be considered to be in parallel. Further, when the cell unit 150 only includes the first cell 101 and the first cell 102, the first positive tab 1011 and the second positive tab 1021 are welded and fixed to form the positive terminal; the first negative tab 1012 and the second negative tab 1022 are welded and fixed to form the negative terminal.
In the second case, the first positive tab 1011 is disposed opposite the second negative tab 1022, and the first negative tab 1012 is disposed opposite the second positive tab 1021. When the first positive tab 1011 and the second negative tab 1022 are welded and fixed, the first end of the first battery cell 101 and the first end of the first battery cell 102 may be considered to be connected in series. Further, when the cell unit 150 includes only the first cell 101 and the first cell 102, the second positive tab 1021 forms the positive terminal, and the first negative tab 1012 forms the negative terminal.
In the case where the first negative electrode tab 1012 is welded and fixed to the second positive electrode tab 1021, the second end of the first cell 101 and the second end of the first cell 102 may be considered to be connected in series. Further, when the cell unit 150 includes only the first cell 101 and the first cell 102, the first positive tab 1011 forms the positive terminal, and the second negative tab 1022 forms the negative terminal.
In this concrete implementation form, can realize the series connection or parallelly connected between the adjacent electric core through the connection between the relative utmost point ear that sets up, further improved carry out welded simple operation degree and the connection stability between the utmost point ear.
In this embodiment, based on the adjacent setting of first electric core 101 and second electric core 102, it is a plurality of when series connection or parallel relation is realized to electric core, only need with adjacent electric core the utmost point ear to welding fixed can, the equipment of electric core subassembly 100 is more simple and convenient, and need not to use busbar or copper bar in electric core subassembly 100, has reduced electric core subassembly 100's cost of manufacture.
In this embodiment, the positive electrode terminal may be formed by the positive electrode tab of any one of the battery cells, or may be formed by the positive electrode tabs of a plurality of the battery cells connected in parallel.
In the first case, the positive terminal is formed by the positive tab of any one of the battery cells, which is electrically connected to the first electrode tab 110.
In the second case, the positive terminal is formed by connecting the positive tabs of a plurality of the battery cells in parallel, that is, the positive tabs of a plurality of adjacent battery cells are welded and fixed to form the positive terminal, and the positive terminal is electrically connected to the first electrode plate 110.
In a third case, the positive terminal is formed by connecting the positive tabs of a plurality of the battery cells in parallel, that is, the positive tabs of the adjacent battery cells are electrically connected to the first electrode sheet 110 respectively.
The negative electrode terminal may be formed by the negative electrode tab of any one of the battery cells, or may be formed by connecting a plurality of negative electrode tabs of the battery cells in parallel.
In the first case, the negative electrode terminal is formed by the negative electrode tab of any one of the battery cells, and the negative electrode tab is electrically connected to the second electrode tab 120.
In the second case, the negative electrode terminal is formed by connecting the negative electrode tabs of a plurality of the battery cells in parallel, that is, the negative electrode tabs of a plurality of adjacent battery cells are welded and fixed to form the negative electrode terminal, and the negative electrode terminal is electrically connected to the second electrode plate 120.
In a third case, the negative electrode terminal is formed by connecting the negative electrode tabs of a plurality of the battery cells in parallel, that is, the negative electrode tabs of adjacent battery cells are electrically connected to the second electrode sheet 120 respectively.
Optionally, as shown in fig. 1, the battery module further includes:
the signal acquisition module 400 is arranged on any one side surface of the cell module, and the signal acquisition module 400 is connected with the cell in each cell assembly 100 and is used for acquiring at least one of a voltage signal and a temperature signal of the cell;
as shown in fig. 5 and 6, the cell assembly 100 further includes at least one signal collecting unit 140, an input end of the signal collecting unit 140 is connected to the cell, and an output end of the signal collecting unit 140 is connected to the signal collecting module 400.
In a specific embodiment, as shown in fig. 6, the battery core assembly 100 may further include a buffer 160, where the buffer 160 may be disposed between the battery cell unit 150 and the supporting frame 130 to reduce the interaction between the battery cell unit 150 and the supporting frame 130, protect the battery cell unit 150, and reserve an expansion space for the battery cell unit 150 when the battery cell unit 150 expands due to heat generated by operation, so as to reduce the risk of expansion and even explosion of the battery module due to high temperature. The buffer member 160 may also be disposed between two adjacent battery cells, and is not limited herein. The buffer 160 may be made of foam or other materials, which is not limited herein.
In a specific embodiment, as shown in fig. 6, the electric core assembly 100 may further include a heat dissipation member 170, and the heat dissipation member 170 may help dissipate heat from the electric core assembly, thereby reducing the risk of expansion and even explosion of the battery module due to high temperature.
In summary, in the battery module provided in the embodiment of the present invention, the battery module includes a plurality of battery cell assemblies and a bus bar, each of the battery cell assemblies includes a battery cell, a positive terminal and a negative terminal, a plurality of conductive pieces of the bus bar are arranged at intervals to form a plurality of first avoiding positions, the first avoiding positions are used for accommodating at least one of the positive terminal and the negative terminal, and at least one of the positive terminal and the negative terminal is electrically connected to the extending portion. The busbar passes through first dodge the position and accept the positive terminal and the negative pole end of battery module group, first dodge a position side opening, it is right when the busbar is installed, the positive terminal with the negative pole end stretches into more easily first dodge the position, and need not to use model instrument, has not only reduced the cost of production of battery module still makes the equipment of battery module is more simple and convenient, has improved the yield efficiency of battery module.
It should be noted that, various optional implementations described in the embodiments of the present invention may be implemented in combination with each other or implemented separately, and the embodiments of the present invention are not limited thereto.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" 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 otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiments described above are described with reference to the drawings, and various other forms and embodiments are possible without departing from the principle of the present invention, and therefore, the present invention should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of components may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, components, and/or groups thereof. Unless otherwise indicated, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A battery module, comprising:
the battery cell module comprises a plurality of battery cell assemblies, and each battery cell assembly comprises a battery cell unit, a positive terminal and a negative terminal;
the busbar, the busbar set up in the first side of electricity core module, the busbar includes main part and a plurality of electrically conductive piece, a plurality of electrically conductive piece are in set up side by side in the main part, and the extension of first side department of main part is formed with a plurality of extensions, arbitrary adjacent two be formed with the first position of dodging between the extension, the first position of dodging is used for acceping the positive terminal with at least one of negative pole end, the positive terminal with at least one of negative pole end with the extension electricity is connected.
2. The battery module according to claim 1, wherein the plurality of extensions are arranged side by side in a first direction, and the plurality of cell assemblies are stacked in the first direction.
3. The battery module as set forth in claim 2, wherein the main body is formed by connecting a plurality of connecting plates side by side, two adjacent connecting plates are detachably fixed to each other, and the plurality of conductive members are correspondingly disposed on the plurality of connecting plates.
4. The battery module according to claim 3, wherein the first ends of the connecting plates are bent to form bent portions, the bent portions include the first side edges, the connecting plates are detachably fixed along a second direction, and the second direction is perpendicular to the first direction.
5. The battery module according to any one of claims 1 to 4, wherein the cell assembly comprises a first sub-side, the positive terminal and the negative terminal are both located at the first sub-side, and the first side comprises the first sub-side.
6. The battery module according to claim 5, wherein the positive terminal comprises a tab lead and a first electrode tab, and the negative terminal comprises a tab lead and a second electrode tab;
the first electrode plate and the second electrode plate are arranged at intervals back to back, or the first electrode plate and the second electrode plate are arranged at intervals side by side.
7. The battery module according to claim 5, wherein the cell assembly further comprises a support frame for fixing the cell units, and the support frames of the plurality of cell assemblies are connected in a stacked manner;
the support frame comprises a second avoidance position, and the second avoidance position is used for accommodating the positive terminal and the negative terminal.
8. The battery module according to claim 7, wherein the support frame is provided with one of a buckle and a slot, the first side is provided with the other of a buckle and a slot, and the bus bar and the cell module are fixedly connected through the buckle and the slot.
9. The battery module according to claim 5, wherein the cell unit comprises a plurality of cells, and the cells are connected in series or in parallel to form the positive terminal and the negative terminal;
the plurality of battery cells comprise a first battery cell and a second battery cell which are adjacent, a first positive electrode lug and a first negative electrode lug are arranged on the second sub-side surface of the first battery cell, and a second positive electrode lug and a second negative electrode lug are arranged on the third sub-side surface of the second battery cell;
at least one of the first positive tab and the first negative tab is fixedly welded with at least one of the second positive tab and the second negative tab, and the first battery cell and the second battery cell are connected in series or in parallel through the first positive tab, the first negative tab, the second positive tab and the second negative tab.
10. The battery module of claim 9, wherein the first cell and the second cell are arranged side by side, and the second sub-side is opposite to the third sub-side.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114006059A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Battery module and battery pack with same |
| CN114188671A (en) * | 2021-12-03 | 2022-03-15 | 广汽埃安新能源汽车有限公司 | Busbar installation mistake proofing frock |
| CN114361725A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
| CN114361727A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Square shell battery module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114361725A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
| CN114361727A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Square shell battery module |
| CN114361725B (en) * | 2021-07-15 | 2023-08-22 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
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| CN114006059A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Battery module and battery pack with same |
| CN114188671A (en) * | 2021-12-03 | 2022-03-15 | 广汽埃安新能源汽车有限公司 | Busbar installation mistake proofing frock |
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| CN113097654B (en) | 2023-05-26 |
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