CN210607352U - Electrical isolation device and battery module thereof - Google Patents
Electrical isolation device and battery module thereof Download PDFInfo
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- CN210607352U CN210607352U CN201921321743.3U CN201921321743U CN210607352U CN 210607352 U CN210607352 U CN 210607352U CN 201921321743 U CN201921321743 U CN 201921321743U CN 210607352 U CN210607352 U CN 210607352U
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- electrical isolation
- energy
- battery module
- energy absorption
- absorbing member
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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 provides an electrical isolation device and a battery module thereof, wherein the electrical isolation device comprises a plurality of electrical isolation plates and one or more energy absorption areas, and an energy absorption area is arranged between two adjacent electrical isolation plates; the energy absorption area is at least provided with a first energy absorption piece, the first energy absorption piece is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation plates to generate corresponding deformation, and two adjacent electric isolation plates are connected through the first energy absorption piece. The utility model has the advantages that: the splitting of a traditional whole block of electric isolation plate is divided into a plurality of blocks, an energy absorbing piece is arranged between the electric isolation plate and the energy absorbing piece, and tolerance generated when the battery module is assembled is absorbed through the energy absorbing piece, so that the tolerance generated when the battery module is assembled by the electric isolation device can be effectively absorbed, and the connecting piece on the electric isolation plate can be accurately connected with the lug on the module body.
Description
Technical Field
The utility model relates to a battery field, in particular to electrical isolation device and battery module thereof.
Background
The electrical isolation device in the battery module is generally a whole plate, and most of the forming processes are integrally formed, but in the battery module, because the thicknesses of the battery cells are not consistent, and the assembly process is not necessarily very accurate, certain manufacturing tolerances exist. Therefore when electric core quantity is more in battery module, this tolerance accumulation grow, and the deviation appears easily in the assembly of electrical isolation board and electric core to lead to connection piece and the unsafe problem of electric core utmost point ear connection.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electrical isolation device and battery module thereof aims at solving and leads to connection piece and the unsafe problem of electricity core utmost point ear connection because of the tolerance is big.
The utility model provides an electrical isolation device for the equipment battery module, include: the battery module comprises a plurality of electric isolation plates and one or more energy absorption areas, wherein one energy absorption area is arranged between every two adjacent electric isolation plates and is used for absorbing tolerance generated when the battery module is assembled by the electric isolation device;
the energy absorption area is at least provided with a first energy absorption piece, two adjacent electric isolation plates are connected through the first energy absorption piece, and the first energy absorption assembly is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation plates to generate corresponding deformation.
Furthermore, a wiring groove is further formed in the electrical isolation plate and is arranged on one side of the electrical isolation plate and used for fixing the wiring harness in the battery module.
Furthermore, one or more connecting sheet mounting frames for mounting connecting sheets are arranged on the electric isolation plates, and the first energy absorbing piece is connected with the connecting sheet mounting frames at the tail ends of the two adjacent electric isolation plates.
Furthermore, the energy absorption area is also provided with a second energy absorption piece, the second energy absorption piece is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation board and generates corresponding deformation, the second energy absorption piece is arranged opposite to the first energy absorption piece and is also connected with the connecting piece mounting frame at the tail end of the electric isolation board, and the second energy absorption piece and the first energy absorption piece are arranged in a hollow mode.
Further, the electrical isolation plate comprises an end plate, the end plate is arranged on the outer side, a plurality of buckles are arranged on the end plate, and the plurality of buckles are used for fixing the electrical isolation plate.
Furthermore, the energy absorption area is also provided with a third energy absorption piece, the third energy absorption piece is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation board to generate corresponding deformation, and is connected with the outer edges of the end plates of two adjacent electric isolation boards, and the third energy absorption piece and the first energy absorption piece are arranged in a hollow mode.
Furthermore, an energy absorption groove is further formed in the electrical isolation plate and is arranged between every two adjacent connecting sheet mounting frames.
Further, one or more energy absorption areas and a plurality of electric isolation plates are integrally formed.
Furthermore, the material of the electric isolation device is plastic.
The utility model also provides a battery module, include: the battery module comprises a battery module body and two electrical isolation devices, wherein the two electrical isolation devices are oppositely arranged and respectively buckled above a positive electrode lug and a negative electrode lug of the battery module body, and are respectively in contact connection with the positive electrode lug and the negative electrode lug.
The utility model has the advantages that: the splitting of a traditional whole block of electric isolation plate is divided into a plurality of blocks, an energy absorbing piece is arranged between the electric isolation plate and the energy absorbing piece, and tolerance generated when the battery module is assembled is absorbed through the energy absorbing piece, so that the tolerance generated when the battery module is assembled by the electric isolation device can be effectively absorbed, and the connecting piece on the electric isolation plate can be accurately connected with the lug on the module body.
Drawings
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an electrical isolation device (including a connecting sheet) according to an embodiment of the present invention;
fig. 4 is an exploded view of an electrical isolation device (including connecting tabs) according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an electrical isolation device (without connecting pieces) according to an embodiment of the present invention;
fig. 6 is an enlarged schematic view at a of fig. 5.
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 up, down, left, right, front, back, etc.) in the embodiments 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 also changed accordingly, and the connection may be a direct connection or an indirect connection.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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, 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.
Referring to fig. 1-6, the present invention provides an electrical isolation device for assembling a battery module, including: the battery module comprises a plurality of electrical isolation plates 12 and one or more energy absorption areas, wherein one energy absorption area is arranged between every two adjacent electrical isolation plates 12 and is used for tolerance generated when the battery module is assembled by the electrical isolation device; the energy absorption area is at least provided with a first energy absorption piece 151, the first energy absorption piece 151 is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation board to generate corresponding deformation, and two adjacent electric isolation boards 12 are connected through the first energy absorption piece 151.
Referring to fig. 1 and 3 in detail, when assembling the battery module, because the tab 21 on the battery cell is not necessarily completely aligned with the connecting plate 13 on the electrical isolation plate 12, and there is a certain tolerance, when the number of the battery cells is large, the accumulated tolerance is large enough, so that the tab 21 on the battery cell cannot be aligned with the subsequent connecting plate 13, therefore, the present application splits the traditional whole electrical isolation plate 12 into a plurality of pieces, and sets the energy absorbing member therebetween, and absorbs the tolerance generated when assembling the battery module through the energy absorbing member, thereby effectively weakening the influence of the battery cell and the electrical isolation plate 12 with a certain tolerance, and enabling the connecting plate 13 on the electrical isolation plate 12 to be accurately connected with the tab 21 on the module body. For better tolerance absorption, an energy absorption region may be provided at intervals in the length direction of the electrical isolation device, and the generated tolerance is absorbed in stages, that is, the length of the electrical isolation boards 12 is limited, and an energy absorption region is provided between the electrical isolation boards 12. As shown in fig. 6, the energy absorbing region at least comprises a first energy absorbing member 151, the first energy absorbing member 151 has a buffer structure that is compressed or stretched along the length direction of the electrical isolation board and deforms accordingly, as shown in fig. 6, the first energy absorbing member 151 is an arc of a concave structure, and the arc is arranged outwards. It should be noted that the concave structure of the first energy absorbing member 151 may be inwardly curved, or may be concave structures with other shapes, such as a broken line type, a wave type, etc., and fig. 6 merely provides an example, and is not only a concave structure with an inwardly curved surface.
In this embodiment, the electrical isolation board 12 is further provided with a wiring groove, and the wiring groove is arranged on one side of the electrical isolation board 12 and used for fixing a wiring harness in the battery module. Referring to fig. 1-3 in detail, corresponding wire slots are disposed at the inner sides of the two electrical isolation plates 12 near the middle portion, and a buckle for fixing wires is further disposed at the upper side of the two electrical isolation plates 12, so that each connection sheet 13 can be conveniently connected to the battery management unit. It should be noted that the routing grooves may also be arranged on the outer side of the electrical isolation board 12 away from the middle, or one electrical isolation device 1 may be arranged on the outer side and the other on the inner side, which may be arranged according to the actual situation, and fig. 1-3 only provide a preferred embodiment because the arrangement on the inner side may avoid occupying most of the space.
In this embodiment, one or more connecting sheet mounting frames are disposed on the electrical isolation board 12, and the first energy-absorbing member 151 is connected to the connecting sheet mounting frames at the ends of two adjacent electrical isolation boards 12, and the connecting sheet mounting frames are used for mounting connecting sheets. The connecting sheets are installed through the connecting sheet installing frame, so that the positions of the connecting sheets on the electric isolation plate 12 can be relatively fixed, and the connecting sheet installing frame can effectively ensure the insulativity of two adjacent connecting sheets.
Referring to fig. 5 to 6, in this embodiment, a second energy absorbing member 152 is further disposed in the energy absorbing region, the second energy absorbing member 152 has a buffer structure that is compressed or stretched along the length direction of the electrical isolation board to deform correspondingly, the second energy absorbing member 152 is disposed opposite to the first energy absorbing member 151 and is also connected to the connecting sheet mounting frame at the end of two adjacent electrical isolation boards 12, and the second energy absorbing member 152 and the first energy absorbing member 151 are disposed in a hollow manner. Referring to fig. 6, the second energy absorbing member 152 is a wave-shaped structure, and the first energy absorbing member 151, the second energy absorbing member 152 and the connecting sheet at the ends of the two adjacent electrical isolation plates 12 are enclosed to form a hollow frame structure, so that the energy absorbing performance of the energy absorbing region is ensured, and the position stability of the two adjacent electrical isolation plates 12 is also ensured.
In this embodiment, the electrical isolation board 12 includes an end plate, the end plate is disposed on the outer side, and the end plate is provided with a plurality of fasteners, and the plurality of fasteners are used for fixing the electrical isolation board 12. Referring to fig. 5, the end plate 122 is provided to connect other portions of the electrical isolation plate 12 and fix the electrical isolation plate to the battery module, and may serve as a protective insulator for connecting plates provided inside the battery module. In a preferred embodiment, as shown in fig. 4, mounting holes 14 are further formed at both ends of the electrical isolation device 1, and the electrical isolation device is firmly fixed to the battery module body 2 by the cooperation of the mounting holes 14 and bolts.
In this embodiment, the energy-absorbing region is further provided with a third energy-absorbing member 153, the third energy-absorbing member 153 has a buffer structure that is compressed or stretched along the length direction of the electrical isolation board to generate corresponding deformation, and is connected to the outer edges of the end plates of two adjacent electrical isolation boards 12, the third energy-absorbing member 153 and the first energy-absorbing member 151 are disposed in a hollow manner, and in a specific embodiment, the first energy-absorbing member 151, the second energy-absorbing member 152 and the third energy-absorbing member 153 are disposed in a hollow manner between every two. Referring to fig. 6 in detail, the buffer structure of the third energy-absorbing member 153 is a concave structure, and the third energy-absorbing member 153 is disposed to ensure the continuity between the end plates of the electrical isolation board 12 and the energy-absorbing property in the energy-absorbing region.
Referring to fig. 5, in this embodiment, the electrical isolation board 12 is further provided with an energy absorption groove, and the energy absorption groove is disposed between two adjacent connecting sheet mounting frames. In order to better absorb the tolerance and avoid the tolerance from being too large to be absorbed completely at the energy absorbing part, an energy absorbing groove 123 is arranged at two adjacent connecting sheets 13, so that the tolerance is further reduced.
Referring to FIG. 6, in a preferred embodiment, one or more energy absorbing regions are integrally formed with a plurality of electrical isolation plates 12. Namely, the first energy absorbing element 151, the second energy absorbing element 152 and the third energy absorbing element 153 are integrally formed with the electrical isolation board 12, so that the connection strength is ensured, and the electrical isolation device is convenient to produce.
In this embodiment, the material of the electrical isolation plate 12 is plastic. Because the plastic material has a certain energy absorption effect, the plastic material is preferably selected, and the production cost can be effectively saved. Specifically, the type of plastic material may be PC (polycarbonate), PP (polypropylene), PC + ABS (terpolymer of three monomers of acrylonitrile, butadiene, and styrene), and the like.
The utility model provides a battery module, include: the battery module comprises a battery module body and two electrical isolation devices, wherein the two electrical isolation devices are oppositely arranged and respectively buckled above a positive electrode lug and a negative electrode lug of the battery module body, and are respectively in contact connection with the positive electrode lug and the negative electrode lug. Referring to fig. 1, two electrical isolation devices 1 are provided and respectively fastened to the tabs 21 at two ends of the battery cell, so that a certain space is reserved in the middle of the battery cell, and an exhaust duct can be provided for exhausting the battery cell at this position without considering the problem that the two ends of the battery cell are in contact with the tabs 21 of the battery cell.
In this embodiment, the battery module further includes a wire harness 11, and the wire harness 11 is fixed in the wiring duct and is connected to the connecting sheet 13. The wiring harness 11 is located in the wiring duct, and is convenient for connecting the battery management unit and the connecting sheet 13. It should be noted that, referring to fig. 2 in detail, the wire harness 11 in fig. 2 includes a plurality of wires, each wire corresponds to one connection piece 13, and the connection piece 13 corresponds to a single-pole tab 21 of two cells (a positive tab 21 or a negative tab 21 of two cells), which indicates that the battery management unit can control the on and off of the two cells. Further, the connecting sheet 13 may also be configured to correspond to the tab 21 of three or more battery cells, and each wire may also correspond to a plurality of connecting sheets 13, which may be configured according to practical situations and are all included in the protection scope of the present application.
In this embodiment, referring to fig. 1 to 2, the battery further includes a power management unit 3, where the power management unit 3 is connected to the wires in the wire harness 11, and controls each battery cell to discharge.
Referring to fig. 1, in this embodiment, still include a plurality of mounting grooves that set up electric core in the resistance module body 2, be provided with the baffle between the mounting groove, the both ends of battery module body are provided with the end plate, and the side is provided with the curb plate, constitutes electric core module body 2 through end plate, curb plate, mounting groove and the electric core that sets up in inside.
The utility model has the advantages that: the traditional whole block of electrical isolation plate 12 is split into a plurality of blocks, an energy absorbing piece is arranged between the blocks, and tolerance generated when the battery module is assembled is absorbed through the energy absorbing piece, so that tolerance generated when the battery module is assembled by an electrical isolation device can be absorbed, and the connecting sheet 13 on the electrical isolation plate 12 can be accurately connected with the lug 21 on the module body.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An electrical isolation device for assembling a battery module, comprising: the battery module comprises a plurality of electric isolation plates and one or more energy absorption areas, wherein one energy absorption area is arranged between every two adjacent electric isolation plates and is used for absorbing tolerance generated when the battery module is assembled by the electric isolation device;
the energy absorption area is at least provided with a first energy absorption piece, two adjacent electric isolation plates are connected through the first energy absorption piece, and the first energy absorption piece is provided with a buffer structure which is compressed or stretched along the length direction of the electric isolation plates to generate corresponding deformation.
2. The electrical isolation device as claimed in claim 1, wherein a wiring groove is further formed on the electrical isolation plate, and the wiring groove is disposed at one side of the electrical isolation plate and used for fixing the wiring harness in the battery module.
3. The electrical isolation device of claim 1, wherein the electrical isolation plates are provided with one or more tab mounting frames for mounting tabs, and the first energy absorbing member is connected to the tab mounting frame at the end of two adjacent electrical isolation plates.
4. The electrical isolation device according to claim 3, wherein the energy-absorbing region is further provided with a second energy-absorbing member, the second energy-absorbing member has a buffer structure which is compressed or stretched along the length direction of the electrical isolation board and deforms accordingly, the second energy-absorbing member is arranged opposite to the first energy-absorbing member and is also connected with the connecting piece mounting frames at the ends of two adjacent electrical isolation boards, and the second energy-absorbing member and the first energy-absorbing member are arranged in a hollow manner.
5. The electrical isolation apparatus of claim 1, wherein the electrical isolation plate comprises an end plate disposed on an outer side, the end plate having a plurality of snaps disposed thereon, the plurality of snaps configured to secure the electrical isolation plate.
6. The electrical isolation device of claim 5, wherein the energy absorbing region is further provided with a third energy absorbing member, the third energy absorbing member has a buffer structure which is compressed or stretched along the length direction of the electrical isolation board and deforms correspondingly, and is connected with the outer edges of the end plates of two adjacent electrical isolation boards, and the third energy absorbing member and the first energy absorbing member are arranged in a hollow manner.
7. The electrical isolation device of claim 3, wherein the electrical isolation plate is further provided with an energy absorption groove, and the energy absorption groove is arranged between two adjacent connecting sheet mounting frames.
8. An electrical isolation device as claimed in any of claims 1 to 7, wherein one or more of the energy absorption regions are provided integrally with a plurality of electrical isolation plates.
9. An electrical isolation device as claimed in claim 1, wherein the material from which the electrical isolation device is constructed is a plastics material.
10. A battery module, comprising: the battery module comprises a battery module body and two electrical isolation devices as claimed in any one of claims 1 to 9, wherein the two electrical isolation devices are oppositely arranged and respectively buckled above a positive electrode lug and a negative electrode lug of the battery module body and are respectively in contact connection with the positive electrode lug and the negative electrode lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921321743.3U CN210607352U (en) | 2019-08-14 | 2019-08-14 | Electrical isolation device and battery module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921321743.3U CN210607352U (en) | 2019-08-14 | 2019-08-14 | Electrical isolation device and battery module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210607352U true CN210607352U (en) | 2020-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921321743.3U Active CN210607352U (en) | 2019-08-14 | 2019-08-14 | Electrical isolation device and battery module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210607352U (en) |
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2019
- 2019-08-14 CN CN201921321743.3U patent/CN210607352U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
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: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |