CN220963960U - Shielding structure of high-voltage interface of power battery - Google Patents
Shielding structure of high-voltage interface of power battery Download PDFInfo
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- CN220963960U CN220963960U CN202322418506.1U CN202322418506U CN220963960U CN 220963960 U CN220963960 U CN 220963960U CN 202322418506 U CN202322418506 U CN 202322418506U CN 220963960 U CN220963960 U CN 220963960U
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- shielding
- ring
- power
- contact surface
- voltage interface
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- 238000010030 laminating Methods 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000002788 crimping Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Insulating Bodies (AREA)
Abstract
The utility model relates to the field of shielding of equipment on an electric field, in particular to a shielding structure of a high-voltage interface of a power battery. The utility model provides a power battery high pressure interface shielding structure, including the threading mouth that is used for supplying the power pencil to penetrate, have the shielding contact surface in the threading mouth, shielding structure still includes the shielding ring and with the pencil shielding layer laminating contact's of power pencil shielding clamping ring, the shielding ring is in the relative fixed connection in axial, in the axial direction sliding fit between shielding ring and the shielding contact surface in order to withdraw from the threading mouth together with the shielding clamping ring when extracting the power pencil, the shielding ring is connected with shielding clamping ring electricity and the equal electricity of shielding contact surface is connected and is formed the equipotential body, the problem that the power terminal contacted the shielding ring easily when having solved prior art and pulled out the power pencil causes the short circuit.
Description
Technical Field
The utility model relates to the field of shielding of equipment on an electric field, in particular to a shielding structure of a high-voltage interface of a power battery.
Background
Along with the development of new energy electric automobiles of lithium ion batteries, the consumption of the power high-voltage connector is more and more, the power high-voltage connector is used as an interface between power equipment, and has the functions of electric power connection and electromagnetic shielding, so that the performance of the power high-voltage connector interface is related to the reliability of normal operation of products.
At present, high-voltage electric connection between a battery pack and a high-voltage electric box is realized through crimping of a high-voltage wire harness power terminal and a high-voltage terminal of a connector. The threading opening of the power connector is provided with a shielding ring, the threading opening of the power connector is in interference fit with the shielding ring, and the shielding ring is provided with a shielding convex claw; the power wire harness comprises a power conductor, a wire harness shielding layer and a shielding compression ring in compression joint with the wire harness shielding layer. When the power wire harness is used, the power wire harness is sent into the threading opening of the power connector, so that the power terminal of the power wire harness is contacted with the high-voltage terminal of the power connector, and a power loop is formed; meanwhile, the shielding ring is connected with the shielding pressing ring through the shielding convex claw, and the shielding ring is electrically connected with the shielding contact surface in the threading opening, so that a complete conductive loop is formed. When the power wire harness is pulled out, the high-voltage wire harness power terminal is separated from the high-voltage terminal of the power connector, but the shielding ring is kept in an original state because the shielding ring is in interference fit with the threading opening of the power connector. When the power wire harness is pulled out, the power terminal is extremely easy to contact with the shielding convex claw of the shielding ring.
When the battery pack is in insulation failure, because the disassembly tool does not perform insulation treatment or the MSD on the battery pack is not pulled out, short circuit can be caused when a metal tool is used during disassembly or a high-voltage wire harness is pulled out, and the phenomenon of hurting people or damaging equipment can occur.
Disclosure of utility model
The utility model aims to provide a shielding structure of a high-voltage interface of a power battery, which is used for solving the problem that a power terminal is easy to contact a shielding ring to cause short circuit when a power wire harness is pulled out in the prior art.
The utility model provides a shielding structure of power battery high voltage interface, including the threading mouth that is used for supplying the power pencil to penetrate, have the shielding contact surface in the threading mouth, shielding structure still includes the shielding ring and the shielding clamping ring of the pencil shielding layer laminating contact with the power pencil, the shielding ring is in the relative fixed connection in axial with the shielding clamping ring, sliding fit in axial between shielding ring and the shielding contact surface is in order to withdraw from the threading mouth together with the shielding clamping ring when extracting the power pencil, the shielding ring is connected with the shielding clamping ring electricity and the equal electricity of shielding contact surface is connected and is formed the equipotential body.
The utility model improves the prior art, and specifically: through the connection of the shielding ring and the shielding clamping ring relatively fixed in the axial direction, when the power wire harness is pulled out, the shielding ring can follow the shielding clamping ring to withdraw from the threading opening, so that the movable space reserved for the power terminal can be greatly increased, the power terminal is not easy to contact with the shielding contact surface, short circuit is caused, and the problem that the power terminal is easy to contact with the shielding ring to cause short circuit when the power wire harness is pulled out in the prior art is solved.
Further, the shielding ring comprises an annular structure, an internal thread is arranged in the annular structure, the shielding pressing ring comprises a press-connection section which is in press-connection contact with a wire harness shielding layer of the power wire harness, a thread section is further connected to the press-connection section, an external thread matched with the internal thread of the annular structure of the shielding ring is arranged on the thread section, and the shielding pressing ring and the shielding ring are relatively fixed in the axial direction through threads.
The advantages are that: the screw thread is adopted because the screw thread is convenient to manufacture, has high reliability, is not easy to be disconnected and the like, and forms an equipotential body.
Further, elastic claws are arranged on the annular structure of the shielding ring and are connected with the crimping section of the shielding pressing ring by extrusion, so that the shielding ring and the shielding pressing ring form an equipotential body.
The advantages are that: the formation of the equipotential body can be better ensured by the cooperation of the electrical contact of the spring claw with the crimping section and the threaded section.
Further, the spring claw faces one side of the outlet end of the power connector.
The advantages are that: the elastic claw is arranged on one side of the annular structure of the shielding ring, which faces the shielding compression ring, and the thread section is arranged on one side of the compression section, which is close to the shielding ring, so that the power wire harness can be assembled more easily.
Further, an insulating guide strip extending along the axial direction is arranged on the shielding contact surface, a guide groove matched with the insulating guide strip is formed in the annular structure of the shielding ring, the shielding ring and the shielding contact surface are guided to slide along the axial direction through the matching of the insulating guide strip and the guide groove, and the groove edge of the guide groove is connected with the shielding contact surface between two adjacent insulating guide strips, so that the shielding ring and the shielding contact surface are electrically connected.
The advantages are that: when the shielding ring and the shielding contact surface slide relatively in the axial direction through the matching of the insulating guide strip and the guide groove, the matching of the insulating guide strip and the guide groove can also limit the shielding ring to prevent the shielding ring from rotating to cause the shielding ring to be separated from the shielding compression ring, so that the possibility of contact between the power terminal and the shielding contact surface is reduced and the possibility of short circuit is reduced when the power wire harness is pulled out.
Further, the insulating guide strips are uniformly distributed on the shielding contact surface in the circumferential direction.
The advantages are that: the even distribution of the insulated guide strips may make the electrical connection more stable, while the area of the exposed shield contact surface may be reduced to reduce the likelihood of contact with the power terminals.
Further, the adjacent spacing between the insulated guide bars is less than the thickness of the power terminals.
The advantages are that: because the adjacent distance between the insulating guide strips is smaller than the thickness of the power terminal, the possibility of contact between the power terminal and the shielding contact surface is avoided, and the occurrence of short circuit is avoided.
Further, the insulating guide bar is provided with at least six.
The advantages are that: the arrangement of more than six insulating guide strips can reduce the possibility of the contact between the power terminal and the shielding contact surface as far as possible on the premise of ensuring electric connection.
Further, the crimp segment is a regular polygon.
The advantages are that: the regular polygon crimp segment can be better matched with the claw, and the reliability of electric connection is improved.
Drawings
Fig. 1 is: the first embodiment of the shielding structure of the high-voltage interface of the power battery has a structure schematic diagram of a threading port;
Fig. 2 is: the first embodiment of the shielding ring of the shielding structure of the high-voltage interface of the power battery is a structural schematic diagram;
Fig. 3 is: a power harness structure schematic diagram of a first embodiment of a shielding structure of a high-voltage interface of a power battery of the utility model;
fig. 4 is: a cross-sectional view of a first embodiment of a shielding structure for a high voltage interface of a power battery according to the present utility model is shown.
In the figure: 1. a shielding ring; 101. a guide groove; 102. a claw; 2. a shielding press ring; 201. a threaded section; 202. a crimping section; 3. a power terminal; 4. insulating guide strips.
Detailed Description
The features and capabilities of the present utility model are described in further detail below in connection with the examples.
An embodiment of a shielding structure of a high-voltage interface of a power battery of the utility model is as follows:
As shown in fig. 1-4, the utility model ensures that the power terminal 3 can not contact the shielding ring 1 when the power wire harness is pulled out of the threading opening by fixedly connecting the shielding ring 1 and the shielding pressing ring 2 in the axial direction through threads while forming an equipotential body through the electric connection of the shielding contact surface, the shielding ring 1 and the shielding pressing ring 2. And because the shielding ring 1 is pulled out of the threading opening, the movable range of the power terminal 3 is enlarged, so that the contact with the shielding contact surface is difficult, and the insulating guide strip 4 is further arranged on the shielding contact surface, the possibility that the power terminal 3 contacts with a conductive piece is greatly reduced, the occurrence of the condition of short circuit is basically avoided, and the problem that the power terminal 3 is easy to contact with the shielding ring 1 to cause short circuit when a power wire harness is pulled out in the prior art is solved.
As shown in fig. 1-4, the shielding press ring 2 is in contact with a harness shielding layer of a power harness, and the shielding press ring 2 includes a press-connection section 202, and the press-connection section 202 is in a regular hexagon shape. The shield compression ring 2 further comprises a threaded section 201, the threaded section 201 being arranged on the side of the crimp section 202 facing the shield ring 1.
The shielding contact surface in the threading opening is provided with insulating guide strips 4 which are uniformly distributed along the axial direction, and the number of the insulating guide strips is eight. In other embodiments, the number of the insulating guide strips 4 can be seven or nine, and of course, preferably, not less than six insulating guide strips are required, and the adjacent spacing between the insulating guide strips is ensured to be smaller than the thickness of the power terminal, so that the occurrence of short circuit caused by contact between the power terminal and the shielding contact surface due to overlarge exposed area of the shielding contact surface is avoided. The threading opening can be an inner hole of an independent tubular part, the tubular part is assembled on the power connector, and the threading opening can also be a wiring opening formed by the power connector for assembling a threading hole of the power wire harness. The shielding ring 1 is arranged in the threading opening, the shielding ring 1 comprises an annular structure, and a guide groove 101 matched with the insulating guide strip 4 is formed in the annular structure. An internal thread matching the external thread of the thread section 201 is provided in the annular structure of the shielding ring 1. The shielding ring 1 is provided with spring fingers 102 at the position of the guide groove 101, the spring fingers 102 extending in a direction facing away from the power connector terminals.
In use, the thread segments 201 are screwed together with the annular structure of the shielding ring 1. The provision of the threaded section 201 on the side of the crimp section 202 facing the shielding ring 1 makes the connection easier, the threaded section 201 being provided with an external thread. The fixed connection of the shielding ring 1 and the shielding pressing ring 2 is realized through threads, because the threads are convenient to manufacture and the reliability of electric connection is high. The spring fingers 102 simultaneously compress the crimp segments 202. The spring claw 102 can ensure the reliability of the electric connection between the shielding ring 1 and the shielding pressing ring 2, and avoid the situation that the electric connection is disconnected and the equipotential body fails. While providing crimp segments 202 in a regular hexagonal shape may better mate with jaws 102 and may also increase the reliability of the electrical connection. Of course, in other embodiments, the crimp segment 202 may be a regular octagon or a regular pentagon, which may be selected according to practical situations, but not too much, too much will be approximately circular, so that the claw 102 may slide to cause the electrical connection to fail; and not too little, to prevent the jaws 102 from making edge contact with the crimp segments 202 to affect the reliability of the electrical connection. The guide groove 101 of the shielding ring 1 is aligned with the insulating guide strip 4 on the shielding contact surface in the threading hole, the shielding ring 1 is pushed into the threading hole, the groove edge of the guide groove 101 of the shielding ring 1 is contacted with the shielding contact surface between the insulating strips 4, the electric connection of the shielding pressing ring 2, the shielding ring 1 and the shielding contact surface is realized, and the shielding pressing ring 2, the shielding ring 1 and the shielding contact surface form an equipotential body. The shielding ring 1 and the shielding contact surface can slide relatively in the axial direction through the matching of the insulating guide strip 4 and the guide groove 101, and meanwhile, the shielding ring 1 can be limited through the matching of the insulating guide strip 4 and the guide groove 101, so that the shielding ring 1 and the shielding compression ring 2 are prevented from being separated due to the rotation of the shielding ring 1. And the adjacent distance between the insulating guide strips 4 is smaller than the thickness of the power terminal, so that the contact between the power terminal 3 and the shielding contact surface is thoroughly avoided, and the possibility of short circuit caused by the contact between the power terminal 3 and the shielding contact surface when the power wire harness is pulled out is ensured. And then the power terminal 3 is sent into the threading opening and is in power connection with the wiring end of the power connector.
When the power wire harness is pulled out, as the shielding ring 1 and the shielding pressing ring 2 are locked through threads, and the shielding ring 1 and the shielding contact surface are assembled in a sliding manner, the shielding ring 1 can withdraw from the threading hole along with the shielding pressing ring 2, and as the shielding ring 1 withdraws from the threading hole, the movable range of the power terminal 3 is enlarged, the contact position with the shielding contact surface is difficult to meet, the insulating guide strips 4 are further arranged on the shielding contact surface, the adjacent distance between the insulating guide strips 4 is smaller than the thickness of the power terminal, the possibility that the power terminal 3 contacts with a conductive piece is thoroughly avoided, the occurrence of the condition that the conductive terminal 3 contacts with the conductive piece to cause short circuit is thoroughly solved, and the problem that the power terminal 3 contacts with the shielding ring 1 easily when the power wire harness is pulled out in the prior art is solved.
The second embodiment of the high-voltage interface shielding structure of the power battery of the utility model is as follows: the difference between this embodiment and the first embodiment is that: one of the shielding compression ring and the shielding ring is provided with a claw, the other is provided with a clamping groove matched with the claw, and the two are in relatively fixed connection in the axial direction through the cooperation of the claw and the clamping groove after the two are assembled by the strong plug bush.
Embodiment III of the high-voltage interface shielding structure of the power battery of the utility model: the difference between this embodiment and the first embodiment is that: the shielding ring is of a tubular structure, one end of the tubular structure is provided with an internal thread, the side wall of the tubular structure is stamped with an inward protruding inner convex claw, and the inner convex claw is in contact with the compaction section.
The fourth embodiment of the shielding structure of the high-voltage interface of the power battery of the utility model is: the difference between this embodiment and the first embodiment is that: the spring fingers extend along a side of the terminals facing the power connector.
The fifth embodiment of the shielding structure of the high-voltage interface of the power battery of the utility model is that: the difference between this embodiment and the first embodiment is that: the insulating guide strip is provided with only one and covers half of the shield contact surface.
The sixth embodiment of the shielding structure of the high-voltage interface of the power battery of the utility model is: the difference between this embodiment and the first embodiment is that: the shielding ring and the shielding pressing ring are matched with the annular structure only through the threaded section to form the equipotential body.
Embodiment seven of the shielding structure of the high-voltage interface of the power battery of the utility model: the difference between this embodiment and the first embodiment is that: the shielding ring is in direct contact with the shielding contact surface, and an insulating guide strip is omitted.
The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a shielding structure of power battery high voltage interface, includes the threading mouth that is used for supplying the power pencil to penetrate, has the shielding contact surface in the threading mouth, shielding structure still includes shielding ring (1) and with the shielding clamping ring (2) of the pencil shielding layer laminating contact of power pencil, its characterized in that: the shielding ring (1) is connected with the shielding pressing ring (2) relatively fixedly in the axial direction, the shielding ring (1) is in sliding fit with the shielding contact surface in the axial direction so that when the power wire harness is pulled out, the shielding ring (1) withdraws from the threading opening along with the shielding pressing ring (2), and the shielding ring (1) is electrically connected with the shielding pressing ring (2) and the shielding contact surface is electrically connected to form an equipotential body.
2. The shielding structure of a high voltage interface of a power battery according to claim 1, wherein: the shielding ring (1) comprises an annular structure, an internal thread is arranged in the annular structure, the shielding pressing ring (2) comprises a crimping section (202) which is in contact with a wire harness shielding layer of the power wire harness in a laminating mode, a threaded section is further connected to the crimping section (202), an external thread matched with the internal thread of the annular structure of the shielding ring (1) is arranged on the threaded section, and the shielding pressing ring (2) and the shielding ring (1) are fixed relatively in the axial direction through threads.
3. The shielding structure of the high-voltage interface of the power battery according to claim 2, wherein: the annular structure of the shielding ring (1) is provided with elastic claws (102), and the elastic claws (102) are connected to extrude the compression joint section (202) of the shielding press ring (2) to enable the shielding ring (1) and the shielding press ring (2) to form an equipotential body.
4. A shielding structure for a high voltage interface of a power battery according to claim 3, wherein: the spring claw (102) faces one side of the outlet end of the power connector.
5. The shielding structure of a high voltage interface of a power battery according to any one of claims 2 to 4, wherein: the shielding contact surface is provided with an insulating guide strip (4) extending along the axial direction, a guide groove (101) matched with the insulating guide strip (4) is formed in the annular structure of the shielding ring (1), the shielding ring (1) and the shielding contact surface are guided to slide in the axial direction through the matching of the insulating guide strip (4) and the guide groove (101), and the groove edge of the guide groove (101) is connected with the shielding contact surface between two adjacent insulating guide strips (4), so that the shielding ring (1) and the shielding contact surface are electrically connected.
6. The power cell high voltage interface shielding structure of claim 5, wherein: the insulating guide strips (4) are uniformly distributed on the shielding contact surface in the circumferential direction.
7. The power cell high voltage interface shielding structure of claim 6, wherein: the adjacent distance between the insulating guide strips (4) is smaller than the thickness of the power terminal.
8. The power cell high voltage interface shielding structure of claim 6, wherein: the insulation guide strips (4) are at least provided with six.
9. The shielding structure of the high-voltage interface of the power battery according to claim 2, wherein: the crimping section (202) is a regular polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322418506.1U CN220963960U (en) | 2023-09-06 | 2023-09-06 | Shielding structure of high-voltage interface of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322418506.1U CN220963960U (en) | 2023-09-06 | 2023-09-06 | Shielding structure of high-voltage interface of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220963960U true CN220963960U (en) | 2024-05-14 |
Family
ID=90982565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322418506.1U Active CN220963960U (en) | 2023-09-06 | 2023-09-06 | Shielding structure of high-voltage interface of power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220963960U (en) |
-
2023
- 2023-09-06 CN CN202322418506.1U patent/CN220963960U/en active Active
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