CN214068852U - Coupling assembling and battery module - Google Patents
Coupling assembling and battery module Download PDFInfo
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- CN214068852U CN214068852U CN202023352064.8U CN202023352064U CN214068852U CN 214068852 U CN214068852 U CN 214068852U CN 202023352064 U CN202023352064 U CN 202023352064U CN 214068852 U CN214068852 U CN 214068852U
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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 utility model discloses a connecting assembly and a battery module, wherein, one connecting assembly comprises a first conductive piece, the first end of which is welded with the positive pole ear of one battery unit, and the second end of which extends out of the gap; a second conductive member, a first end of which is welded to a negative electrode tab of another adjacent battery cell, and a second end of which extends out of the gap; and the third conductive piece is arranged outside the gap and is welded with the second end of the first conductive piece and the second end of the second conductive piece. The utility model provides a problem that the anodal utmost point ear of one of them battery unit and the negative pole utmost point ear interval undersize of another adjacent battery unit are difficult to establish ties.
Description
Technical Field
The utility model relates to a battery manufacturing technical field, in particular to coupling assembling and battery module.
Background
In a battery module, a bus bar with a U-shaped structure is generally adopted to connect positive electrode tabs or negative electrode tabs of two battery units in parallel by welding, when a plurality of battery units are required to be connected in series, the space occupied by the battery module is saved and the energy density of the battery module is improved, so that the energy of the battery module is increased in a limited space, the space between two adjacent battery units is usually reduced to the greatest extent, and the bus bar with the U-shaped structure cannot be directly welded on the positive electrode tabs and the negative electrode tabs between the two adjacent battery units because the space between the two adjacent battery units is too small; on the other hand, since the positive electrode tab and the negative electrode tab of the battery cell have limited strength, if the positive electrode tab of one battery cell and the negative electrode tab of another adjacent battery cell are directly welded together, the connection reliability of the positive electrode tab of one battery cell and the negative electrode tab of another adjacent battery cell is greatly reduced. Therefore, it is necessary to provide a positive electrode tab of one of the battery cells and a negative electrode tab of another adjacent battery cell, which can be connected in series with an excessively small pitch.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a connecting assembly and a battery module capable of solving the problem that the distance between the positive electrode tab of one battery cell and the negative electrode tab of the other adjacent battery cell is too small to be connected in series.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a coupling assembling for two adjacent battery unit of series connection, two be formed with the clearance between the battery unit, battery unit is provided with anodal utmost point ear and negative pole utmost point ear with one side, one of them battery unit's anodal utmost point ear and adjacent another battery unit's negative pole utmost point ear orientation the clearance sets up, its characterized in that, coupling assembling includes: a first conductive member having a first end welded to a positive electrode tab of one of the battery cells and a second end extending out of the gap; a second conductive member, a first end of which is welded to a negative electrode tab of another adjacent battery cell, and a second end of which extends out of the gap; and the third conductive piece is arranged outside the gap and is welded with the second end of the first conductive piece and the second end of the second conductive piece.
As an optimized scheme of the utility model, first electrically conductive piece is including the first curb plate and the second curb plate that are connected, first curb plate and one of them the welding of the anodal utmost point ear of battery unit, the second curb plate by first curb plate is bent and is formed, the second curb plate stretch out to outside the clearance to with the welding of the third electrically conductive piece.
As a preferred embodiment of the present invention, the second side plate is welded to the third conductive member.
The utility model also provides a battery module, including a plurality of battery cells and any one of above-mentioned scheme coupling assembling, it is a plurality of the battery cell arranges side by side, adjacent two be formed with the clearance between the battery cell, battery cell is provided with anodal utmost point ear and negative pole utmost point ear with one side, one of them battery cell's anodal utmost point ear and adjacent another battery cell's negative pole utmost point ear orientation the clearance sets up.
As a preferred aspect of the present invention, the battery unit includes at least three, the connecting assembly includes at least two, every the connecting assembly is used for connecting adjacent two in series the battery unit.
As a preferred aspect of the present invention, the battery module further includes a blocking member, the blocking member is disposed between two adjacent connecting assemblies to block direct contact between two adjacent connecting assemblies.
As a preferred aspect of the present invention, the battery unit comprises a first battery cell and a second battery cell, a first positive electrode lug and a first negative electrode lug are respectively arranged on two sides of the first battery cell, a second positive electrode lug and a second negative electrode lug are respectively arranged on two sides of the second battery cell, a first positive tab of the first cell and a second negative tab of the second cell are located on a first side of the battery unit, the first negative electrode tab of the first cell and the second positive electrode tab of the second cell are located on a second side of the battery unit, a second positive electrode tab of the second cell is connected with a first negative electrode tab of the first cell, the first battery cell and the second battery cell are connected in series, a first positive electrode lug of the first battery cell forms a positive electrode lug of the battery unit, and a second negative electrode lug of the second battery cell forms a negative electrode lug of the battery unit.
As an optimized scheme of the utility model, battery unit still includes the fourth electrically conductive piece, the fourth electrically conductive both ends respectively with the second anodal utmost point ear of second electric core with the first negative pole utmost point ear of first electric core is connected, in order to realize first electric core with the series connection of second electric core.
As an optimized scheme of the utility model, the positive pole utmost point ear is the form utmost point ear of buckling, and \ or the negative pole utmost point ear is the form utmost point ear of buckling.
As an optimized scheme of the utility model, the battery unit still includes the mounting bracket, the mounting bracket is used for fixing first electric core with the second electric core.
The utility model has the advantages that: compared with the prior art, because anodal utmost point ear and the negative pole utmost point ear in the clearance are difficult to establish ties, process the utility model discloses a first electrically conductive piece of coupling assembling stretches out the clearance between two battery units with the second electrically conductive piece for with the first electrically conductive piece of anodal utmost point ear welded of one of them battery unit and with the second electrically conductive piece of the negative pole utmost point ear welded of another adjacent battery unit weld the welding space grow that electrically conductive, be convenient for first electrically conductive piece and second electrically conductive piece and the third outside the clearance electrically conductive piece is connected, the problem that anodal utmost point ear of one of them battery unit and another adjacent battery unit's negative pole utmost point ear interval undersize is difficult to establish ties has been solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of series connection between battery cells according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure shown in A of FIG. 1;
fig. 3 is a schematic structural diagram illustrating the welding of the positive electrode tab of the battery unit according to an embodiment of the present invention;
FIG. 4 is a schematic top view of FIG. 3;
FIG. 5 is a schematic structural view of the first bending member in an embodiment of the present invention
Fig. 6 is an exploded view of a battery cell according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
fig. 8 is a schematic view of the structure shown in B of fig. 6.
Wherein, in the figures, the respective reference numerals:
1-a battery cell; 11-a first cell; 111-positive electrode tab; 12-a second cell; 121-negative pole tab; 13-a fourth conductive member; 14-a mounting frame; 141-a first positioning portion; 142-a barrier; 15-heat conducting fins;
2-connecting the components; 21-a first conductive member; 211-a first side panel; 212-a second side panel; 22-a second electrically conductive member; 23-a third conductive member; 24-a second location portion;
and 3, a signal acquisition part.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, the connection assembly 2 in an embodiment of the present invention is used for connecting two adjacent battery units 1 in series, a gap is formed between the two battery units 1, a positive electrode tab 111 and a negative electrode tab 121 are disposed on the same side of the battery units 1, the positive electrode tab 111 of one battery unit 1 and the negative electrode tab 121 of another adjacent battery unit 1 are disposed toward the gap, the connection assembly 2 includes a first conductive member 21, a second conductive member 22 and a third conductive member 23, a first end of the first conductive member 21 is welded to the positive electrode tab 111 of one battery unit 1, and a second end of the first conductive member 21 extends out of the gap; a first end of the second conductive member 22 is welded with the negative electrode tab 121 of another adjacent battery unit 1, and a second end of the second conductive member 22 extends out of the gap; the third conductive member 23 is disposed outside the gap and is welded to the second end of the first conductive member 21 and the second end of the second conductive member 22.
Compared with the prior art, the connecting assembly 2 of the present invention has the first end of the first conductive member 21 welded to the positive electrode tab 111 of one of the battery units 1, and the second end of the first conductive member 21 extending out of the gap between the two battery units 1; a first end of the second conductive member 22 is welded with the negative electrode tab 121 of another adjacent battery unit 1, and a second end of the second conductive member 22 extends out of the gap between the two battery units 1; the third conductive member 23 is disposed outside the gap between the two battery cells 1 and welded to the second end of the first conductive member 21 and the second end of the second conductive member 22, so that the current of one battery cell 1 flows into the other adjacent battery cell 1 through the first conductive member 21, the third conductive member 23 and the second conductive member 22 in sequence, thereby achieving the series connection between the two battery cells 1. The positive electrode tab 111 of one battery unit 1 and the negative electrode tab 121 of the other adjacent battery unit 1 are arranged towards the gap between the two battery units 1, the positive electrode tab 111 and the negative electrode tab 121 in the gap are not easy to be connected in series, and extend out to the gap between the two battery units 1 through the first conductive piece 21 and the second conductive piece 22, so that the welding space between the first conductive piece 21 welded with the positive electrode tab 111 of one battery unit 1 and the welding space between the second conductive piece 22 welded with the negative electrode tab 121 of the other adjacent battery unit 1 are increased, the first conductive piece 21 and the second conductive piece 22 are convenient to be connected with the third conductive piece 23 outside the gap, and the problem that the distance between the positive electrode tab 111 of one battery unit 1 and the negative electrode tab 121 of the other adjacent battery unit 1 is not easy to be connected in series due to undersize is solved.
Preferably, the welding is laser welding. The laser welding mode improves the fastness of first conductive piece 21 and anodal utmost point ear 111, and the laser welding mode improves the fastness of second conductive piece 22 and negative pole utmost point ear 121, and the laser welding mode improves the fastness of third conductive piece 23 and first conductive piece 21 and second conductive piece 22 to guarantee the series stability of two adjacent battery unit 1.
As shown in fig. 4 and 5, in another embodiment of the present invention, the first conductive member 21 includes a first side plate 211 and a second side plate 212 connected to each other, the first side plate 211 is welded to the positive electrode tab 111 of one of the battery cells 1, the second side plate 212 is formed by bending the first side plate 211, and the second side plate 212 extends out of the gap and is welded to the third conductive member 23.
Specifically, the first side plate 211 of the first conductive piece 21 is welded to the positive electrode tab 111 of one of the battery cells 1, and the second side plate 212 formed by bending the first side plate 211 extends out of the gap between the two battery cells 1 and is welded to the third conductive piece 23, so that the current of the positive electrode tab 111 flows through the first conductive piece 21 and the third conductive piece 23. The second side plate 212 formed by bending the first side plate 211 is beneficial to enlarging the welding area of the first conductive piece 21 and the third conductive piece 23, so that the first conductive piece 21 and the third conductive piece 23 are welded firmly.
Correspondingly, the second conductive piece 22 includes a first side plate 211 and a second side plate 212 which are connected, the first side plate 211 is welded with the negative electrode tab 121 of another battery unit 1, the second side plate 212 is formed by bending the first side plate 211, and the second side plate 212 protrudes out of the gap and is welded with the third conductive piece 23. The first side plate 211 of the second conductive piece 22 is welded to the negative electrode tab 121 of another battery unit 1, and the second side plate 212 formed by bending the first side plate 211 extends out of the gap between the two battery units 1 and is welded to the third conductive piece 23, so that the current of the negative electrode tab 121 flows through the second conductive piece 22 and the third conductive piece 23. The second side plate 212 formed by bending the first side plate 211 is beneficial to enlarging the welding area of the second conductive piece 22 and the third conductive piece 23, so that the second conductive piece 22 and the third conductive piece 23 are welded firmly.
Preferably, the first conductive member 21 and the second conductive member 22 are L-shaped aluminum members. The aluminum has small density, and also has excellent conductive performance and excellent ductility.
As shown in fig. 3 and 4, in another embodiment of the present invention, the second side plate 212 is welded to the third conductive member 23.
Specifically, the second side plate 212 of the first conductive member 21 is entirely welded to the third conductive member 23, so that the first conductive member 21 is welded to the third conductive member 23, and the welding of the first conductive member 21 and the third conductive member 23 is firm.
Accordingly, the second side plate 212 of the second conductive member 22 is completely welded to the third conductive member 23, so that the second conductive member 22 is welded to the third conductive member 23, and the welding between the second conductive member 22 and the third conductive member 23 is firm.
Preferably, the third conductive member 23 is made of aluminum and has a plate-like structure. The aluminum has small density, and also has excellent conductive performance and excellent ductility; the sheet structure is a plane, which is beneficial to being connected with other battery components.
As shown in fig. 7 and 8, the battery module in another embodiment of the present invention includes a plurality of battery units 1 and the connecting assembly 2 of any one of the above embodiments, the plurality of battery units 1 are arranged side by side, a gap is formed between two adjacent battery units 1, the same side of the battery unit 1 is provided with a positive electrode tab 111 and a negative electrode tab 121, and the positive electrode tab 111 of one battery unit 1 and the negative electrode tab 121 of another adjacent battery unit 1 are arranged toward the gap.
Specifically, a plurality of battery units 1 are arranged side by side, a gap is formed between two adjacent battery units 1, the same side of the plurality of battery units 1 is provided with a positive electrode tab 111 and a negative electrode tab 121, the positive electrode tab 111 of one battery unit 1 and the negative electrode tab 121 of the other adjacent battery unit 1 are arranged towards the gap, and the connecting assembly 2 is connected with the two adjacent battery units 1 in series. A first end of a first conductive piece 21 of the connecting assembly 2 is welded with a positive electrode tab 111 of one battery unit 1 of two adjacent battery units 1, and a second end of the first conductive piece 21 of the connecting assembly 2 extends out of a gap between the two adjacent battery units 1; a first end of the second conductive member 22 of the connecting assembly 2 is welded with the negative electrode tab 121 of the other battery unit 1 of the two adjacent battery units 1, and a second end of the second conductive member 22 of the connecting assembly 2 extends out of the gap between the two adjacent battery units 1; the third conductive member 23 of the connecting assembly 2 is disposed outside the gap between two adjacent battery units 1 and is welded to the second end of the first conductive member 21 of the connecting assembly 2 and the second end of the second conductive member 22 of the connecting assembly 2, so that the current of one battery unit 1 of two adjacent battery units 1 sequentially flows into the other battery unit 1 through the first conductive member 21, the third conductive member 23 and the second conductive member 22, thereby realizing the series connection between two adjacent battery units 1 and further realizing the series connection of a plurality of battery units 1.
As shown in fig. 7 and 8, in another embodiment of the present invention, the number of the battery units 1 is at least three, the number of the connecting assemblies 2 is at least two, and each connecting assembly 2 is used for connecting two adjacent battery units 1 in series.
Specifically, the number of the battery units 1 in the battery module is at least three, the number of the connecting assemblies 2 is at least two, and each connecting assembly 2 is used for connecting two adjacent battery units 1 in series, so that the series connection of the plurality of battery units 1 is realized.
As shown in fig. 6 and 8, in another embodiment of the present invention, the battery module further includes a blocking member 142, and the blocking member 142 is disposed between two adjacent connecting members 2 to block direct contact between the two adjacent connecting members 2.
Specifically, in order to prevent the direct contact between two adjacent connecting assemblies 2 from causing the short circuit of the battery module, a barrier member 142 is disposed between two adjacent connecting assemblies 2, and the barrier member 142 has an insulating property, and blocks the direct contact between two adjacent connecting assemblies 2, thereby preventing the short circuit of the battery module.
As shown in fig. 6, in another embodiment of the present invention, the battery unit 1 further includes a first battery cell 11 and a second battery cell 12, wherein both sides of the first battery cell 11 are respectively provided with a first positive electrode tab 111 and a first negative electrode tab 121, both sides of the second battery cell 12 are respectively provided with a second positive electrode tab 111 and a second negative electrode tab 121, the first positive electrode tab 111 of the first battery cell 11 and the second negative electrode tab 121 of the second battery cell 12 are located on a first side of the battery unit 1, the first negative electrode tab 121 of the first battery cell 11 and the second positive electrode tab 111 of the second battery cell 12 are located on a second side of the battery unit 1, the second positive electrode tab 111 of the second battery cell 12 is connected with the first negative electrode tab 121 of the first battery cell 11, so as to realize the series connection of the first cell 11 and the second cell 12, the first positive electrode tab 111 of the first cell 11 constitutes the positive electrode tab 111 of the battery unit 1, and the second negative electrode tab 121 of the second cell 12 constitutes the negative electrode tab 121 of the battery unit 1.
Specifically, a first positive electrode tab 111 of the first cell 11 and a second negative electrode tab 121 of the second cell 12 are located on a first side of the battery unit 1, the first positive electrode tab 111 of the first cell 11 constitutes a positive electrode tab 111 of the battery unit 1, and the second negative electrode tab 121 of the second cell 12 constitutes a negative electrode tab 121 of the battery unit 1. The second positive tab 111 of the second cell 12 and the first negative tab 121 of the first cell 11 are located on the second side of the battery unit 1, and the second positive tab 111 of the second cell 12 is connected with the first negative tab 121 of the first cell 11, so that the first cell 11 and the second cell 12 are connected in series to form a battery unit 1 with the positive tab 111 and the negative tab 121 on the same side.
As shown in fig. 6, in another embodiment of the present invention, the battery unit 1 further includes a fourth conductive piece 13, and both ends of the fourth conductive piece 13 are respectively connected to the second positive electrode tab 111 of the second cell 12 and the first negative electrode tab 121 of the first cell 11, so as to realize the series connection of the first cell 11 and the second cell 12.
Specifically, the fourth conductive component 13 is connected to the second positive tab 111 of the second cell 12 and the first negative tab 121 of the first cell 11 on the same side of the battery unit 1, so as to implement series connection of the first cell 11 and the second cell 12, and implement series connection of the first cell 11 and the second cell 12 in the battery unit 1.
Preferably, the fourth conductive component 13 includes a bottom plate, a third side plate and a fourth side plate, which are connected to each other, the third side plate is formed by bending the bottom plate, the fourth side plate is formed by bending the bottom plate, the third side plate is connected to the negative electrode tab 121 of the first electrical core 11, and the fourth side plate is connected to the positive electrode tab 111 of the second electrical core 12. The third side plate formed by bending the bottom plate increases the connection area with the negative electrode tab 121 of the first cell 11, and is favorable for the fourth conductive piece 13 to be firmly connected with the negative electrode tab 121 of the first cell 11. The fourth side plate formed by bending the bottom plate increases the connection area with the positive electrode tab 111 of the second cell 12, and is favorable for the fourth conductive element 13 to be firmly connected with the positive electrode tab 111 of the second cell 12.
Preferably, the fourth conductive member 13 is a U-shaped aluminum member. The aluminum has small density, and also has excellent conductive performance and excellent ductility.
As shown in fig. 4 and 6, in another embodiment of the present invention, the positive electrode tab 111 is a bent tab, and/or the negative electrode tab 121 is a bent tab.
Specifically, when the positive electrode tab 111 is a non-bending tab, the non-bending tab is connected to the connecting assembly 2 under a stress between the connecting point and the inside of the first cell 11, so that the non-bending tab easily falls off from the connecting point and the inside of the first cell 11 is damaged; and when anodal utmost point ear 111 was described utmost point ear for buckling, the atress that described utmost point ear of buckling and coupling assembling 2 are connected was inside tie point, bending point and first electric core 11, and the atress that described utmost point ear of buckling will be connected with coupling assembling 2 disperses, has reduced the atress at tie point and first electric core 11 insidely to make the form utmost point ear of buckling be difficult to drop from the tie point, thereby the form utmost point ear of buckling is firm with coupling assembling 2 welding.
Correspondingly, negative pole utmost point ear 121 also describes utmost point ear for buckling, and the atress that the utmost point ear of buckling and coupling assembling 2 are connected is inside tie point, bending point and second electric core 12, and the atress that the utmost point ear of buckling will be connected with coupling assembling 2 disperses, has reduced the atress inside tie point and second electric core 12 to make the utmost point ear of buckling be difficult to drop from the tie point, thereby the utmost point ear of buckling and coupling assembling 2 firm in welding. The bent tab improves the connection reliability and safety performance of the tab.
In another embodiment of the present invention, as shown in fig. 6, the battery unit 1 further comprises a mounting frame 14, wherein the mounting frame 14 is used for fixing the first battery cell 11 and the second battery cell 12.
Specifically, in the mounting bracket 14, the first battery cell 11 and the second battery cell 12 are placed, the first positive electrode tab 111 of the first battery cell 11 and the second negative electrode tab 121 of the second battery cell 12 are located on the first side of the mounting bracket 14, the first negative electrode tab 121 of the first battery cell 11 and the second positive electrode tab 111 of the second battery cell 12 are located on the second side of the mounting bracket 14, the first battery cell 11 and the second battery cell 12 are fixed by the mounting bracket 14, the first battery cell 11 and the second battery cell 12 are prevented from being subjected to relative displacement caused by external vibration, the mounting bracket 14 not only improves the structural strength of the battery unit 1, but also facilitates the connection between the positive electrode tab 111 and the negative electrode tab 121 on the battery unit 1 and the connecting assembly 2.
Preferably, as shown in fig. 6, the mounting frame 14 is provided with a first positioning portion 141, the connecting assembly 2 is provided with a second positioning portion 24, and the first positioning portion 141 and the second positioning portion 24 are matched to fix the mounting frame 14 and the connecting assembly 2.
The first positioning portion 141 includes a protrusion or a through hole, and the second positioning portion 24 includes a through hole corresponding to the protrusion or a protrusion corresponding to the through hole, which cooperate to fix the mounting bracket 14 to the connecting assembly 2.
Specifically, the protruding through-hole cooperation with coupling assembling 2 on the mounting bracket 14, perhaps protruding through-hole cooperation with coupling assembling 2 edge on the mounting bracket 14 to make fixed coupling assembling 2's position, make things convenient for coupling assembling 2 to aim at anodal utmost point ear 111 or the negative pole utmost point ear 121 that mounting bracket 14 stretched out and be connected, so that coupling assembling 2 and anodal utmost point ear 111 or negative pole utmost point ear 121 weld firmly.
Preferably, the mounting frame 14 is a plastic frame, which has a certain structural strength and insulation property, and is convenient for manufacturing the shape of the mounting frame 14.
As shown in fig. 6, the battery unit 1 includes a thermally conductive sheet 15, the thermally conductive sheet 15 is disposed between the first battery cell 11 and the second battery cell 12, and the thermally conductive sheet 15 is configured to conduct heat away from the first battery cell 11 and the second battery cell 12.
Specifically, the thermal conductive sheet 15 is located between the first cell 11 and the second cell 12, and the thermal conductive sheet 15 conducts heat of the first cell 11 and the second cell 12, so as to dissipate heat of the first cell 11 and the second cell 12.
Preferably, the heat conductive sheet 15 is a heat conductive aluminum sheet. The battery unit 1 further comprises a heat conducting glue, and the heat conducting glue is coated between the heat conducting strip 15 and the first electric core 11 due to the fact that gaps can exist between the heat conducting strip 15 and the first electric core 11 and between the heat conducting strip 15 and the second electric core 12, so that the first electric core 11 is attached to the heat conducting strip 15, and the heat conducting efficiency of the first electric core 11 and the heat conducting strip 15 is improved; the coating of heat-conducting glue is between conducting strip 15 and second electricity core 12 for second electricity core 12 and the laminating of conducting strip 15 improve second electricity core 12 and 15 heat conduction efficiency of conducting strip, thereby realize the heat dissipation of first electricity core 11 and second electricity core 12.
Preferably, the battery module further comprises a signal acquisition part 3, the signal acquisition part 3 is connected with the plurality of battery units 1 which are connected in series, and the signal acquisition part 3 is used for acquiring the voltage of each battery unit 1.
Specifically, as shown in fig. 7 and 8, due to the use of the connection structure of the plurality of battery units 1 and the connection assembly 2, it is ensured that the connection surfaces of the signal acquisition member 3 and the plurality of battery units 1 are the same plane, that is, the signal acquisition member 3 and the third conductive member 23 in the connection assembly 2 are the same plane, which facilitates the welding of the signal acquisition member 3 on the plurality of battery units 1 connected in series, so that the signal acquisition member 3 acquires the voltages of the plurality of battery units 1.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. The utility model provides a coupling assembling for two adjacent battery unit of series connection, two be formed with the clearance between the battery unit, battery unit is provided with anodal utmost point ear and negative pole utmost point ear with one side, one of them battery unit's anodal utmost point ear and adjacent another battery unit's negative pole utmost point ear orientation the clearance sets up, its characterized in that, coupling assembling includes:
a first conductive member having a first end welded to a positive electrode tab of one of the battery cells and a second end extending out of the gap;
a second conductive member, a first end of which is welded to a negative electrode tab of another adjacent battery cell, and a second end of which extends out of the gap; and
and the third conductive piece is arranged outside the gap and is welded with the second end of the first conductive piece and the second end of the second conductive piece.
2. The connecting assembly according to claim 1, wherein the first conductive member includes a first side plate and a second side plate connected to each other, the first side plate is welded to a positive electrode tab of one of the battery cells, the second side plate is formed by bending the first side plate, and the second side plate protrudes out of the gap and is welded to a third conductive member.
3. The connection assembly of claim 2, wherein the second side plate is entirely welded to the third electrically-conductive member.
4. The battery module is characterized by comprising a plurality of battery units and the connecting assembly according to any one of claims 1 to 3, wherein the battery units are arranged side by side, a gap is formed between every two adjacent battery units, a positive electrode lug and a negative electrode lug are arranged on the same side of each battery unit, one of the positive electrode lugs and the other adjacent positive electrode lug of each battery unit face towards the gap.
5. The battery module as set forth in claim 4, wherein the number of the battery cells is at least three, and the connecting members include at least two, each for connecting two adjacent battery cells in series.
6. The battery module according to claim 5, further comprising a barrier member disposed between two adjacent connecting members to block direct contact between the two adjacent connecting members.
7. The battery module of claim 4, wherein the battery unit comprises a first cell and a second cell, a first positive electrode lug and a first negative electrode lug are respectively arranged on two sides of the first battery cell, a second positive electrode lug and a second negative electrode lug are respectively arranged on two sides of the second battery cell, a first positive tab of the first cell and a second negative tab of the second cell are located on a first side of the battery unit, the first negative electrode tab of the first cell and the second positive electrode tab of the second cell are located on a second side of the battery unit, a second positive electrode tab of the second cell is connected with a first negative electrode tab of the first cell, the first battery cell and the second battery cell are connected in series, a first positive electrode lug of the first battery cell forms a positive electrode lug of the battery unit, and a second negative electrode lug of the second battery cell forms a negative electrode lug of the battery unit.
8. The battery module of claim 7, wherein the battery unit further comprises a fourth conductive element, and two ends of the fourth conductive element are respectively connected to the second positive electrode tab of the second cell and the first negative electrode tab of the first cell, so as to connect the first cell and the second cell in series.
9. The battery module as claimed in claim 4, wherein the positive electrode tab is a bent tab and/or the negative electrode tab is a bent tab.
10. The battery module of claim 7, wherein the battery unit further comprises a mounting bracket configured to secure the first cell and the second cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023352064.8U CN214068852U (en) | 2020-12-31 | 2020-12-31 | Coupling assembling and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023352064.8U CN214068852U (en) | 2020-12-31 | 2020-12-31 | Coupling assembling and battery module |
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| CN214068852U true CN214068852U (en) | 2021-08-27 |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 xinwanda, No.18, Tangjia South Road, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |