CN214177810U - Floating BDU connection structure - Google Patents
Floating BDU connection structure Download PDFInfo
- Publication number
- CN214177810U CN214177810U CN202120352861.1U CN202120352861U CN214177810U CN 214177810 U CN214177810 U CN 214177810U CN 202120352861 U CN202120352861 U CN 202120352861U CN 214177810 U CN214177810 U CN 214177810U
- Authority
- CN
- China
- Prior art keywords
- bdu
- bms
- nut
- copper bar
- groove structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052802 copper Inorganic materials 0.000 claims abstract description 44
- 239000010949 copper Substances 0.000 claims abstract description 44
- 125000003003 spiro group Chemical group 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Images
Classifications
-
- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a floating type BDU connecting structure, which is used for fixing a BDU and a BMS and is characterized in that the BDU connecting structure comprises a BMS fixing plate, a connecting copper bar component and a fastening bolt, wherein the BMS is fixed on the BMS fixing plate, a groove structure is arranged on the BMS fixing plate, a nut capable of floating up and down is arranged in the groove structure, the fastening bolt sequentially passes through the connecting copper bar component and the BDU and is fixed with the nut in a screwed manner, the diameter of an inscribed circle of the groove structure is smaller than the diameter of an circumscribed circle of the nut and larger than the diameter of an inscribed circle of the nut, and the nut is nested in the groove structure; by using the BDU connecting structure, the BDU welding point is not subjected to pulling force caused by fixed torsion, so that the purpose of protecting the BMS is achieved, and the final yield of the lithium battery is improved.
Description
Technical Field
The utility model relates to a lithium cell preparation technical field especially relates to a floating BDU connection structure.
Background
Lithium battery system is very extensive in the application of automotive industry, and the system all can be equipped with BMS usually, and the general welding of BDU is on BMS, and during circuit connection, the direct overhanging part with BDU of connection copper bar is connected. When turning round fixedly, because the nut is fixed, very easily make BDU receive the packing force to make the welding point pulled, nevertheless BMS can not bear great external force as accurate part, and the stress of turning round surely will make car BMS atress great, causes final lithium cell yield to hang down.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a floating BDU connection structure, BDU welding point do not receive the power of dragging that surely turns round and lead to realize protecting BMS's purpose, improved the final yield of lithium cell.
The utility model provides a floating BDU connection structure for it is fixed with BDU and BMS, including BMS fixed plate, connection copper bar subassembly, fastening bolt, on BMS was fixed in the BMS fixed plate, set up groove structure on the BMS fixed plate, but be provided with the nut that fluctuates among the groove structure, fastening bolt passes connection copper bar subassembly, BDU and nut spiro union in proper order and fixes.
Further, the diameter of the inscribed circle of the groove structure is smaller than that of the circumscribed circle of the nut and larger than that of the inscribed circle of the nut, and the nut is nested in the groove structure.
Further, connect copper bar subassembly includes first connection copper bar, second connection copper bar, and groove structure is two, and one of them fastening bolt passes first connection copper bar, BDU in proper order and fixes with the nut spiro union in one of them groove structure, and another fastening bolt passes second connection copper bar, BDU in proper order and fixes with the nut spiro union in another groove structure.
Furthermore, an insulating rib is arranged between the two groove structures, and the first connecting copper bar and the second connecting copper bar are respectively arranged on two sides of the insulating rib.
Further, BMS fixed plate, groove structure, insulating muscle integrated into one piece.
Further, the BMS is fixed to the BMS fixing plate by the tapping screw.
The utility model provides a pair of floating BDU connection structure's advantage lies in: according to the floating type BDU connecting structure provided by the utility model, the nut gradually rises from the bottom of the groove structure along with the rotation of the fastening bolt, and the BDU welding point does not receive the pulling force caused by the fixed torsion in the whole process, so that the purpose of protecting the BMS is realized; the setting of insulating muscle for creepage distance between first connecting copper bar and the second connecting copper bar grow, has guaranteed electric safety.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the BDU fixedly coupled to the BMS by fastening bolts;
fig. 3 is a schematic structural view of an insulating rib on a BMS fixing plate;
fig. 4 is a schematic top view of the present invention;
the device comprises 1-BDU, 2-BMS, 3-connecting copper bar assemblies, 4-fastening bolts, 5-groove structures, 6-nuts, 7-insulating ribs, 8-self-tapping screws, 9-BMS fixing plates, 31-first connecting copper bars and 32-second connecting copper bars.
Detailed Description
The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.
As shown in fig. 1 to 4, the utility model provides a floating BDU connection structure for it is fixed with BDU1 and BMS2, including BMS fixed plate 9, connect copper bar subassembly 3, fastening bolt 4, on BMS2 was fixed in BMS fixed plate 9, seted up groove structure 5 on the BMS fixed plate 9, be provided with nut 6 that can fluctuate in the groove structure 5, fastening bolt 4 passes connection copper bar subassembly 3, BDU1 in proper order and fixes with nut 6 spiro union.
The nut 6 can fluctuate by the arrangement of groove structure 5, and along with fastening bolt 4's rotation, nut 6 rises gradually from groove structure 5 bottom, and until laminating with BDU1, whole in-process, BDU1 welding point do not receive the pulling force that the fixed torsion led to realize protection BMS 2's purpose.
Wherein, BMS2 is fixed on BMS fixed plate 9 through self-tapping screw (8).
Therefore, in order to realize the up-and-down floating of the nut 6, the diameter of the inscribed circle of the groove structure 5 is smaller than the diameter of the circumscribed circle of the nut 6 and larger than the diameter of the inscribed circle of the nut 6, and the nut 6 is nested in the groove structure 5, so that the phenomenon that the nut 6 slips and cannot be screwed down cannot occur in the rotating process of the fastening bolt 4, and the nut 6 can only move up and down along the opening direction of the groove structure 5 under the action of stress.
In this embodiment, connect copper bar subassembly 3 including first connection copper bar 31, second connection copper bar 32, groove structure 5 is two, and one of them fastening bolt 4 passes first connection copper bar 31, BDU1 in proper order and fixes with the nut 6 spiro union in one of them groove structure 5, and another fastening bolt 4 passes second connection copper bar 32 in proper order, BDU1 and fixes with the nut 6 spiro union in another groove structure 5.
The first connecting copper bar 31 and the second connecting copper bar 32 can respectively lead out a positive terminal and a negative terminal to complete the operations such as power supply of the vehicle-mounted electrical appliance structural component, an insulating rib 7 is arranged between the two groove structures 5 in order to ensure the electrical safety between the first connecting copper bar 31 and the second connecting copper bar 32, and the first connecting copper bar 31 and the second connecting copper bar 32 are respectively arranged on two sides of the insulating rib 7. The arrangement of the insulating ribs 7 enables the creepage distance between the first connecting copper bar 31 and the second connecting copper bar 32 to be increased, and the electrical safety is guaranteed.
In this embodiment, the BMS fixing plate 9, the groove structure 5, and the insulating rib 7 are integrally formed to improve the connection stability of the entire BDU connection structure.
The working process is as follows: during the installation, put into groove structure 5 with nut 6 earlier, then with BMS2 with the fastening of self-tapping nail 8 on BMS fixed plate 9, then place first connecting copper bar 31, turn round the mode through deciding with fastening bolt 4 and first connecting copper bar 31, BDU1, nut 6 and be connected. In the fastening process, the diameter of the inscribed circle of the groove structure 5 is larger than that of the inscribed circle of the nut 6 and smaller than that of the circumscribed circle of the nut 6, so that the phenomenon that the nut 6 slips and cannot be screwed down can be avoided. As the tightening bolt 4 is rotated, the nut 6 gradually rises from the bottom of the groove structure 5 until it engages the BDU1, as shown in fig. 2. In the whole process, the welding point of the BDU1 is not subjected to the pulling force caused by the fixed torsion, so that the purpose of protecting the BMS2 is achieved. Likewise, the connection operation of the first connection copper bar 32 may be performed to complete the stable connection between the BDU1 and the BMS 2.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a floating BDU connection structure for it is fixed with BMS (2) BDU (1), a serial communication port, including BMS fixed plate (9), connect copper bar subassembly (3), fastening bolt (4), BMS (2) are fixed in on BMS fixed plate (9), seted up groove structure (5) on BMS fixed plate (9), but be provided with nut (6) that fluctuate in groove structure (5), fastening bolt (4) pass in proper order and connect copper bar subassembly (3), BDU (1) and nut (6) spiro union is fixed.
2. A floating BDU connecting structure according to claim 1, characterized in that said groove structure (5) has an inscribed circle diameter smaller than the circumscribed circle diameter of the nut (6) and larger than the inscribed circle diameter of the nut (6), the nut (6) being nestingly arranged in the groove structure (5).
3. The floating BDU connecting structure according to claim 2, characterized in that the connecting copper bar assembly (3) comprises a first connecting copper bar (31) and a second connecting copper bar (32), the number of the groove structures (5) is two, one fastening bolt (4) passes through the first connecting copper bar (31) and the BDU (1) in sequence and is fixed with the nut (6) in one groove structure (5) in a screwed mode, and the other fastening bolt (4) passes through the second connecting copper bar (32) and the BDU (1) in sequence and is fixed with the nut (6) in the other groove structure (5) in a screwed mode.
4. A floating BDU connecting structure according to claim 3, characterized in that an insulating rib (7) is arranged between the two groove structures (5), and the first connecting copper bar (31) and the second connecting copper bar (32) are respectively arranged at two sides of the insulating rib (7).
5. A floating BDU connecting structure according to claim 4, characterized in that the BMS fixing plate (9), the groove structure (5) and the insulating ribs (7) are integrally formed.
6. A floating BDU connecting structure according to any of the claims 1-5 characterized in that the BMS (2) is fixed on the BMS fixing plate (9) by self tapping screws (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352861.1U CN214177810U (en) | 2021-02-05 | 2021-02-05 | Floating BDU connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352861.1U CN214177810U (en) | 2021-02-05 | 2021-02-05 | Floating BDU connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214177810U true CN214177810U (en) | 2021-09-10 |
Family
ID=77594727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120352861.1U Active CN214177810U (en) | 2021-02-05 | 2021-02-05 | Floating BDU connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214177810U (en) |
-
2021
- 2021-02-05 CN CN202120352861.1U patent/CN214177810U/en active Active
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