CN107394713B - High-voltage junction box with shielding meeting IP67 - Google Patents
High-voltage junction box with shielding meeting IP67 Download PDFInfo
- Publication number
- CN107394713B CN107394713B CN201710854488.8A CN201710854488A CN107394713B CN 107394713 B CN107394713 B CN 107394713B CN 201710854488 A CN201710854488 A CN 201710854488A CN 107394713 B CN107394713 B CN 107394713B
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- China
- Prior art keywords
- sealing gasket
- cover
- base
- shielding
- plastic
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- 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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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cable Accessories (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to the technical field of lithium ion battery shells, in particular to a high-voltage wiring box with shielding meeting IP67, which comprises an upper cover component and a base component; the upper cover assembly comprises an upper metal cover, an upper plastic cover, an upper sealing gasket and an upper shielding ring; the upper sealing gasket is embedded into the upper plastic cover, the upper plastic cover is fixed in the upper metal cover, and the upper shielding ring is embedded into the upper metal cover; the base assembly comprises a lower plastic base, a lower metal base, a lower sealing gasket and a lower shielding ring; the lower sealing gasket is embedded into the lower plastic base, the lower plastic base is fixed in the lower metal base, and the lower shielding ring is embedded and installed on the lower metal base; the upper metal cover and the lower metal base are connected and fixed together through fixing bolts. The invention aims at the reliable connection mode of the high-voltage line electric connection technology, has simple process, low cost and reliable structure, and improves the reliability and the safety of the battery system.
Description
Technical Field
The invention relates to the technical field of lithium ion battery shells, in particular to a high-voltage wiring box with shielding meeting IP 67.
Background
In the electric vehicle industry, pure electric power and hybrid power put higher and higher requirements on a high-voltage connection end at a power battery system, and shielding and IP level protection of a high-voltage junction box become difficult problems to be overcome in the industry. At present, connectors or fixing seats for connecting high-voltage power lines in the new energy automobile power battery industry are exposed, so that the connectors are poor in waterproof and dustproof effects, electromagnetic interference is easy to generate, and potential safety hazards are brought to normal operation of other parts. The prior art discloses an electric motor car high voltage distribution box, its structure is: the box body with the sealing cover is internally provided with a high-voltage safety sheet, a direct-current contactor, a relay, a pre-charging resistor and a low-voltage safety sheet; the direct current contactor is provided with a high-voltage input terminal, a high-voltage output terminal, a low-voltage input terminal and a low-voltage output terminal; the high voltage rupture disc comprises an input connector for connecting an external high voltage cable and an output connector for coupling with a high voltage input terminal of a dc contactor. The disadvantages of this patent are as follows: the whole sealing performance is poor, water and dust easily enter the shell from the position of the wiring terminal, and the protection grade of IP67 is not achieved; external electromagnetic interference cannot be prevented.
Disclosure of Invention
The invention aims to overcome the defects of the technology and provide the high-voltage junction box with the shielding meeting IP67, so that the protection level is improved and the electromagnetic interference is prevented.
The invention adopts the following technical scheme to realize the aim:
a high voltage junction box with shielding meeting IP67, characterized in that: comprises an upper cover component, a base component, a total positive and negative copper bar and a shielding power line; the upper cover assembly comprises an upper metal cover, an upper plastic cover, an upper sealing gasket and an upper shielding ring; the base assembly comprises a lower plastic base, a lower metal base, a lower sealing gasket and a lower shielding ring; the middle parts of the upper sealing gasket and the lower sealing gasket are respectively provided with a through hole for the passage of a shielding power line, one side of the upper sealing gasket and one side of the lower sealing gasket are parallel planes, the other side of the upper sealing gasket and the lower sealing gasket are provided with semicircular arcs which are sunken outwards, the semicircular arcs are tightly matched with the surface of the shielding power line, the upper sealing gasket is embedded into the upper plastic cover, and the upper plastic cover is fixed in the upper metal cover; the lower sealing gasket is embedded into a lower plastic base, the lower plastic base is fixed in a lower metal base, a hexagonal groove for fixing a hexagonal bolt is formed in the lower plastic base, and a strip-shaped hole for enabling the total positive and negative copper bars to pass through is formed in one side of the hexagonal groove; the upper part and the lower part of the total positive and negative copper bars are provided with connecting holes, the lower parts of the total positive and negative copper bars are inserted into the strip-shaped holes, the bottom of a hexagonal bolt is arranged in the hexagonal groove, the upper part of the hexagonal bolt penetrates through the connecting holes on the upper parts of the total positive and negative copper bars, and one end of the shielding power line is fixed with the total positive and negative copper bars through a flange nut; the upper shielding ring and the lower shielding ring are symmetrically semicircular, are respectively embedded into one ends of the upper metal cover and the lower metal cover, and are tightly matched around the shielding power line after being buckled; the upper metal cover and the lower metal base are connected and fixed together through fixing bolts.
Preferably, two sides of the upper plastic cover and the lower plastic cover are respectively provided with a buckle, and the buckles are matched with clamping grooves respectively correspondingly arranged on the upper metal cover and the lower metal cover.
Preferably, the upper shielding ring and the lower shielding ring are respectively composed of a semicircular ring body made of 0.3mm phosphor copper, the two ends of the semicircular ring body are respectively provided with a back-off which is used for being fixed with the upper metal cover and the lower metal cover, the back of the semicircular ring body is inwards sunken to form an arc-shaped bulge, and a plurality of strip-shaped grooves are formed in the middle of the arc-shaped bulge at intervals.
Preferably, positioning protrusions are respectively arranged around the upper seal and the lower seal, and the positioning protrusions respectively penetrate through positioning holes on the upper plastic cover and the lower plastic cover to be fixed with the upper plastic cover and the lower plastic cover.
Preferably, the upper and lower gaskets are made of silica gel and treated with teflon.
Preferably, the lower metal base and the box body mounting surface are adhered with sealing gaskets, and the sealing gaskets are medium-hardness foaming silica gel.
Preferably, the lower metal base needs to be integrally sprayed with plastic, and the contact surface of the lower metal base and the box body is coated with an anti-corrosion conductive paint layer. The invention has the beneficial effects that 1) the technical scheme has ingenious overall design and compact structure, and the sealing gaskets are additionally arranged on the inner side of the box cover and the lower sealing gasket, so that the waterproof grade of the junction box is improved, and the IP67 grade can be achieved. 2) The shielding effect of the junction box is greatly improved compared with the prior art, the L-shaped total positive and negative copper bars are adopted as the wire clamps for fixing the cables and are fixed in the corresponding lower plastic covers, so that the connection strength between the total positive and negative copper bars and the shielding power line can be greatly increased, the cutting sealing performance is very good, the movement is convenient, the replacement is convenient, and the junction box is economical and practical; 3) The technical scheme improves the reliability of normal operation of the equipment; 4) The technical scheme eliminates major personal safety hazards; 5) The technical scheme has lower cost and is convenient for further popularization and application.
Drawings
FIG. 1 is a schematic diagram of a general assembly explosion of the present invention;
FIG. 2 is a schematic view of a shield ring of the present invention;
FIG. 3 is a schematic diagram of the general positive and negative copper bar assembly of the present invention;
FIG. 4 is a schematic view of an assembled cover assembly of the present invention;
FIG. 5 is a front view of the base assembly of the present invention;
FIG. 6 is a schematic view of an assembled base assembly of the present invention.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings and preferred embodiments. As shown in fig. 1, a high-voltage cable box with shielding meeting IP67 comprises an upper cover assembly, a base assembly, a total positive and negative copper bar 9 and a shielding power line 4; the upper cover assembly comprises an upper metal cover 1, an upper plastic cover 2, an upper sealing gasket 3 and an upper shielding ring; the base assembly comprises a lower plastic base 6, a lower metal base 7, a lower gasket 11 and a lower shielding ring 5.
As shown in fig. 4, the middle parts of the upper sealing pad and the lower sealing pad are respectively provided with a through hole 14 for shielding the power line, one sides of the upper sealing pad and the lower sealing pad are parallel planes, the other sides of the upper sealing pad and the lower sealing pad are provided with semicircular arcs 15 which are sunken outwards, the upper sealing pad and the lower sealing pad are made of silica gel and are treated by teflon, so that the upper sealing pad and the lower sealing pad are not bonded when being contacted at the same time. The upper sealing gasket and the lower sealing gasket are contacted, and the compression amount of the sealing gasket is ensured through the bulge on the corresponding boss of the plastic part, so that the whole sealing effect of the junction box is further ensured. The semi-circular arc is tightly matched with the surface of the shielding power line, the upper sealing gasket is embedded into the upper plastic cover, the upper plastic cover is fixed in the upper metal cover, specifically, the two sides of the upper plastic cover and the lower plastic cover are respectively provided with a buckle 19, and the buckle is matched with clamping grooves respectively correspondingly arranged on the upper metal cover and the lower metal cover. Positioning protrusions 23 are respectively arranged around the upper seal and the lower seal, and penetrate through positioning holes on the upper plastic cover and the lower plastic cover respectively to be fixed with the upper plastic cover and the lower plastic cover. The lower metal base is provided with a boss corresponding to the boss, is provided with an opening and tapping hole, is internally embedded with a steel wire threaded sleeve, and ensures the connection strength when the upper cover and the lower cover are connected.
As shown in fig. 1, 5 and 6, the lower gasket is embedded in a lower plastic base, the lower plastic base is fixed in a lower metal base, a hexagonal groove 16 for fixing a hexagonal bolt 10 is arranged in the lower plastic base, and a strip-shaped hole 17 for passing through total positive and negative copper bars is arranged at one side of the hexagonal groove; the total positive and negative copper bars 9 are fixed in the high-voltage wiring box through hexagonal bolts 10 and flange nuts 12 and copper noses of the power lines 4, and hexagonal grooves of the hexagonal bolts. The shape of the total positive and negative copper bars is L-shaped, the upper parts and the lower parts of the total positive and negative copper bars are provided with connecting holes 18, the lower parts of the total positive and negative copper bars are inserted into the strip-shaped holes, the bottoms of the hexagonal bolts are arranged in the hexagonal grooves, the upper parts of the hexagonal bolts penetrate through the connecting holes on the upper parts of the total positive and negative copper bars, and one end of the shielding power line is fixed with the total positive and negative copper bars through the flange nuts 12.
As shown in fig. 1 and 2, the upper shielding ring and the lower shielding ring are symmetrically semicircular, and are respectively embedded at one ends of the upper metal cover and the lower metal cover, and the upper shielding ring and the lower shielding ring are tightly matched around the shielding power line after the upper metal cover and the lower metal cover are buckled; the upper metal cover and the lower metal base are connected and fixed together through a fixing bolt 13. The upper shielding ring and the lower shielding ring are respectively composed of a semicircular ring body made of 0.3mm phosphor copper, two ends of the semicircular ring body are respectively provided with a back-off 20 used for being fixed with an upper metal cover and a lower metal cover, the back of the semicircular ring body is inwards sunken to form an arc-shaped bulge 21, and a plurality of strip-shaped grooves 22 are formed in the middle of the arc-shaped bulge at intervals. The two shielding rings are clamped at the grooves of the upper metal shell and the lower metal shell, the planes of the two shielding rings are contacted, and the protruding parts of the shielding rings are contacted with the power line shielding layer to form a shielding metal shell of the junction box.
In the invention, a sealing gasket 8 is attached to the mounting surfaces of the lower metal base and the box body, and the sealing gasket is medium-hardness foaming silica gel. The lower metal base needs to be integrally sprayed with plastic, and the contact surface of the lower metal base and the box body is coated with an anti-corrosion conductive paint layer. The sealing gasket is not covered with a bulge, the bulge is contacted with the corresponding part of the box body, the shielding effect of the whole battery box is ensured, and the purpose of preventing electromagnetic interference is achieved.
In the invention, the plastic parts and the insulating materials at the outer edges of the metal upper cover and the metal base are covered, the anti-corrosion conductive paint is required to be coated, and the outer edges of the upper shell and the lower shell are ensured to be contacted after the anti-corrosion conductive paint is installed; the lower plastic base is embedded with a nut, and the contact part of the lower plastic base and the box body is locked and fixed through a bolt. The thickness of the material at the contact part of the upper sealing gasket and the power line insulating layer can be adjusted, and the power line insulating layer is suitable for shielding power lines with different wire diameters.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A high voltage junction box with shielding meeting IP67, characterized in that: comprises an upper cover component, a base component, a total positive and negative copper bar and a shielding power line; the upper cover assembly comprises an upper metal cover, an upper plastic cover, an upper sealing gasket and an upper shielding ring; the base assembly comprises a lower plastic base, a lower metal base, a lower sealing gasket and a lower shielding ring; the middle parts of the upper sealing gasket and the lower sealing gasket are respectively provided with a through hole for the passage of a shielding power line, one side of the upper sealing gasket and one side of the lower sealing gasket are parallel planes, the other side of the upper sealing gasket and the lower sealing gasket are provided with semicircular arcs which are sunken outwards, the semicircular arcs are tightly matched with the surface of the shielding power line, the upper sealing gasket is embedded into the upper plastic cover, and the upper plastic cover is fixed in the upper metal cover; the lower sealing gasket is embedded into a lower plastic base, the lower plastic base is fixed in a lower metal base, a hexagonal groove for fixing a hexagonal bolt is formed in the lower plastic base, and a strip-shaped hole for enabling the total positive and negative copper bars to pass through is formed in one side of the hexagonal groove; the upper part and the lower part of the total positive and negative copper bars are provided with connecting holes, the lower parts of the total positive and negative copper bars are inserted into the strip-shaped holes, the bottom of a hexagonal bolt is arranged in the hexagonal groove, the upper part of the hexagonal bolt penetrates through the connecting holes on the upper parts of the total positive and negative copper bars, and one end of the shielding power line is fixed with the total positive and negative copper bars through a flange nut; the upper shielding ring and the lower shielding ring are symmetrically semicircular, are respectively embedded into one ends of the upper metal cover and the lower metal cover, and are tightly matched around the shielding power line after being buckled; the upper metal cover and the lower metal base are connected and fixed together through fixing bolts; the upper shielding ring and the lower shielding ring are respectively composed of a semicircular ring body made of 0.3mm phosphor copper, two ends of the semicircular ring body are respectively provided with a back-off buckle for being fixed with the upper metal cover and the lower metal cover, the back of the semicircular ring body is inwards sunken to form an arc-shaped bulge, and a plurality of strip-shaped grooves are formed in the middle of the arc-shaped bulge at intervals; the part of the sealing gasket which is not covered is provided with a bulge, and the bulge ensures to be contacted with the corresponding part of the box body.
2. The shielded high voltage cable box satisfying IP67 according to claim 1, wherein: the two sides of the upper plastic cover and the lower plastic cover are respectively provided with a buckle, and the buckles are matched with clamping grooves respectively correspondingly arranged on the upper metal cover and the lower metal cover.
3. The shielded high voltage cable box satisfying IP67 according to claim 1, wherein: positioning protrusions are respectively arranged around the upper sealing gasket and the lower sealing gasket, and penetrate through positioning holes in the upper plastic cover and the lower plastic cover respectively to be fixed with the upper plastic cover and the lower plastic cover.
4. The shielded high voltage cable box according to claim 3, wherein IP67 is satisfied by: the upper sealing gasket and the lower sealing gasket are made of silica gel and are treated by teflon.
5. The shielded high voltage cable box satisfying IP67 according to claim 1, wherein: the lower metal base is adhered with a sealing gasket on the mounting surface of the box body, and the sealing gasket is made of medium-hardness foaming silica gel.
6. The shielded high voltage cable box satisfying IP67 according to claim 1, wherein: the lower metal base needs to be integrally sprayed with plastic, and the contact surface of the lower metal base and the box body is coated with an anti-corrosion conductive paint layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854488.8A CN107394713B (en) | 2017-09-20 | 2017-09-20 | High-voltage junction box with shielding meeting IP67 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710854488.8A CN107394713B (en) | 2017-09-20 | 2017-09-20 | High-voltage junction box with shielding meeting IP67 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107394713A CN107394713A (en) | 2017-11-24 |
| CN107394713B true CN107394713B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710854488.8A Active CN107394713B (en) | 2017-09-20 | 2017-09-20 | High-voltage junction box with shielding meeting IP67 |
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| Country | Link |
|---|---|
| CN (1) | CN107394713B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901764A (en) * | 2017-12-19 | 2018-04-13 | 深圳乔合里科技股份有限公司 | The convenient high-voltage connecting wire box installed and dismantled and its assembly and disassembly methods |
| CN108923158B (en) * | 2018-08-21 | 2023-08-11 | 上海航天科工电器研究院有限公司 | OT terminal junction box capable of rapidly uncovering |
| CN111244849A (en) * | 2020-03-27 | 2020-06-05 | 上海犇臣科贸有限公司 | Cable system sealing structure |
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| CN107069340A (en) * | 2017-06-13 | 2017-08-18 | 郑州德睿航联电子技术有限公司 | A kind of air plug shielding construction and the air plug device using the air plug shielding construction |
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|---|---|---|---|---|
| CN1168015A (en) * | 1996-03-20 | 1997-12-17 | Rxs电缆装备有限公司 | Wire or cable terminal box |
| CN1209665A (en) * | 1997-08-01 | 1999-03-03 | 莫列斯公司 | Shield electric-connector with locking mechanism |
| CN201590631U (en) * | 2009-07-31 | 2010-09-22 | 刘绍东 | Photovoltaic cell junction box made of magnesium aluminum alloy |
| CN101913328A (en) * | 2010-07-29 | 2010-12-15 | 重庆长安汽车股份有限公司 | Wiring box of drive motor controller of pure electric vehicle |
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| Publication number | Publication date |
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| CN107394713A (en) | 2017-11-24 |
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Effective date of registration: 20220119 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Applicant after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 Tianjin Xiqing District Binhai new and high technology Industrial Development Zone Huayuan Technology Park (outside the ring) Hai Tai Nan Road No. 38. Applicant before: LISHEN POWER BATTERY SYSTEMS Co.,Ltd. |
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