An electric vehicle battery electrode connection device

Abstract

The present invention discloses an electric vehicle battery electrode connection device, which belongs to the field of electrical connection technology, and includes a limiting sleeve, a locking cap, a gasket and a cover. The limiting sleeve is arranged on a bolt, and the bolt is threadedly matched with a threaded seat on a battery electrode; the locking cap is threadedly matched with the limiting sleeve; the gasket is covered on the threaded seat, and a first sealing ring is arranged between the gasket and the battery; a second sealing ring is arranged between the cover and the gasket, and a third sealing ring is arranged between the flange and the cover. The present invention is provided with a limiting sleeve, a locking cap, a gasket and a cover, and the gasket can cover the threaded seat of the battery electrode. When the bolt is locked on the threaded seat, the bolt can make the limiting sleeve press the wire core of the wire to complete the connection between the wire and the electrode, and the wire can extend from between the gasket and the cover, the locking cap is sealed with the cover through the third sealing ring, the cover is sealed with the gasket through the second sealing ring, and the gasket is sealed with the battery through the first sealing ring, and finally the sealing of the connection between the wire and the electrode is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connection, and in particular to an electric vehicle battery electrode connection device. Background Art

[0002] The battery of an electric vehicle is an important part of an electric vehicle. At present, conventional electric tricycles generally use lead-acid batteries, and multiple lead-acid batteries are connected in series to form a battery pack. The electrode of a conventional lead-acid battery is generally a threaded seat, which can be installed on the threaded seat using a small bolt, and then the wire core at one end of the wire is wrapped around the bolt, and finally the bolt is tightened to achieve the connection between the wire and the electrode.

[0003] The disadvantages of the above connection method are: the connection between the electrode and the wire core is exposed, and external moisture and dust may invade the connection, causing circuit failure or short circuit; the exposed electrodes and wires are also susceptible to corrosion and oxidation, increasing resistance and voltage drop, and increasing energy consumption; the exposed electrodes and wire connections may touch other metal parts on the electric vehicle, causing discharge or leakage. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, an object of the present invention is to provide an electric vehicle battery electrode connection device that can seal and protect the connection between the electrode and the wire.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an electric vehicle battery electrode connection device, comprising:

[0006] A limiting sleeve, wherein the limiting sleeve is arranged on the bolt, and the bolt is threadably matched with the threaded seat on the battery electrode;

[0007] A locking cap, the locking cap is threadedly matched with the limiting sleeve, and a convex edge is fixed on the locking cap;

[0008] A gasket, the gasket is covered on the threaded seat, a first arc groove is formed on the gasket, and a first sealing ring is provided between the gasket and the battery;

[0009] A cover, the cover is arranged on the cushion sleeve, a second arc groove corresponding to the first arc groove is formed on the cover, a clearance hole for the locking cap to pass through is formed on the cover, a second sealing ring is arranged between the cover and the cushion sleeve, and a third sealing ring is arranged between the flange and the cover;

[0010] The wire passes between the first arc groove and the second arc groove, and one end of the wire core is wound around the bolt; when the bolt is locked on the threaded seat, the limiting sleeve presses the wire core against the threaded seat; when the locking cap is locked on the limiting sleeve, the locking cap presses the cover onto the cushion sleeve, and the cushion sleeve is pressed onto the battery.

[0011] Preferably, a cylindrical body is provided on the second sealing ring, the cylindrical body is located between the first circular arc groove and the second circular arc groove, and the wire passes through the cylindrical body.

[0012] Preferably, a first extrusion portion is provided on the inner side wall of the cushion cover, and a first driving groove is provided in the first extrusion portion;

[0013] A second extrusion portion is provided on the inner side wall of the cover, and a second driving groove is provided in the second extrusion portion;

[0014] The cylindrical body is abutted with two half rings;

[0015] When the distance between the cover and the cushion sleeve is reduced, the first driving groove cooperates with the second driving groove to squeeze the two half rings so that the half rings clamp the cylindrical body.

[0016] Preferably, a first limiting plate and a second limiting plate are fixed to the first extrusion portion and the second extrusion portion respectively, and the first limiting plate and the second limiting plate are used to prevent the half ring from escaping from the first driving groove and the second driving groove.

[0017] Preferably, a locking plate is fixed inside the cover, and two abutting plates distributed on both sides of the locking plate are fixed inside the gasket, and the wire passes through between the abutting plates and the locking plates; when the cover is pressed against the gasket, the locking plate cooperates with the two abutting plates to bend the wire and press it against the wire.

[0018] Preferably, the locking plate is twisted, a wire passing groove is provided on the locking plate, and a groove wall of the wire passing groove is spiral.

[0019] Preferably, a plurality of guide sleeves are fixed on the inner wall of the cushion sleeve, and a plurality of guide posts which are respectively slidably matched with the plurality of guide sleeves are fixed on the inner wall of the cover.

[0020] Preferably, a limiting groove is provided at the bottom of the cushion sleeve, and a convex ridge cooperating with the limiting groove is provided on the first sealing ring.

[0021] The beneficial effects of the present invention are:

[0022] The present invention is provided with a gasket and a cover, the gasket can cover the threaded seat of the battery electrode, when the bolt is locked on the threaded seat, the bolt can make the limiting sleeve press the wire core of the wire to complete the connection between the wire and the electrode, and the wire can extend from between the gasket and the cover, the locking cap is threadedly installed on the limiting sleeve, and when the locking cap is locked on the limiting sleeve, the convex edge on the locking cap can press the third sealing ring against the edge of the clearance hole, and at the same time can also provide pressure to press the cover against the gasket and force to press the gasket against the battery, so that the first sealing ring, the second sealing ring and the third sealing ring play a sealing role, and realize the sealing of the connection between the wire and the electrode; the limiting sleeve, the locking cap, the cover and the gasket are all made of plastic, so the connection between the wire and the electrode can be isolated from the outside world to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a conventional lead-acid battery.

[0025] Figure 2 It is a schematic diagram of the practical application effect of the present invention.

[0026] Figure 3 A three-dimensional diagram of an electric vehicle battery electrode connection device provided in an embodiment of the present invention.

[0027] Figure 4 It is a top view of the present invention.

[0028] Figure 5 for Figure 4 Cross-sectional view at AA in the middle.

[0029] Figure 6 It is the front view of the present invention.

[0030] Figure 7 for Figure 6 Cross-sectional view at the middle BB.

[0031] Figure 8 for Figure 6 Cross-sectional view at CC.

[0032] Fig. 9 It is a three-dimensional diagram of the locking plate and the abutting plate of the present invention.

[0033] Description of reference numerals:

[0034] 1. Limit sleeve, 2. Bolt, 3. Threaded seat, 4. Locking cap, 5. Convex edge, 6. Washer, 7. First arc groove, 8. First sealing ring, 9. Cover, 10. Second arc groove, 11. Make way hole, 12. Second sealing ring, 13. Third sealing ring, 14. Wire, 15. Wire core, 16. Cylindrical body, 17. First extrusion part, 18. First drive groove, 19. Second extrusion part, 20. Second drive groove, 21. Half ring, 22. First limit plate, 23. Second limit plate, 24. Locking plate, 25. Abutment plate, 26. Wire groove, 27. Guide sleeve, 28. Guide column, 29. Limit groove, 30. Convex ridge. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figures 1 to 9 As shown, the first embodiment of the present invention provides an electric vehicle battery electrode connection device, which can seal the connection between the electrode and the wire 14, thereby improving safety. Figures 3 to 5 As shown, the present invention specifically includes a limiting sleeve 1, a locking cap 4, a gasket 6 and a cover 9, wherein the limiting sleeve 1 can be sleeved on the bolt 2, the limiting sleeve 1 is larger at the top and smaller at the bottom, and can be against the head of the bolt 2; the electrode of the battery is a metal threaded seat 3, and the bolt 2 can be threadedly installed on the threaded seat 3. After the wire core 15 at one end of the wire 14 is wound into a circle, the bolt 2 is passed through the wire core 15, and when the bolt 2 is locked on the threaded seat 3, the limiting sleeve 1 can press the wire core 15 against the threaded seat 3 to achieve the connection between the wire 14 and the electrode.

[0038] In order to seal the connection between the wire 14 and the electrode, the gasket 6 designed in the present invention can be covered on the threaded seat 3, and the wire 14 extends out of the gasket 6 from the top of the gasket 6. A circle of limiting grooves 29 are provided at the bottom of the gasket 6, and a first sealing ring 8 is placed on the limiting groove 29. The first sealing ring 8 is provided with a convex ridge 30 that cooperates with the limiting groove 29. When the gasket 6 presses the battery downward, the first sealing ring 8 can seal the contact gap between the lower end edge of the gasket 6 and the battery, and the cooperation between the convex ridge 30 and the limiting groove 29 further prevents the displacement of the first sealing ring 8 and facilitates positioning.

[0039] The upper edge of the gasket 6 is also provided with a circle of grooves, and a second sealing ring 12 is arranged on the groove. A first arc groove 7 is provided on the gasket 6, and a cylindrical body 16 is provided on the second sealing ring 12. The cylindrical body 16 and the second sealing ring 12 are integrally formed, and the cylindrical body 16 can also be deformed under pressure. The cylindrical body 16 is located on the first arc groove 7, and the wire 14 passes through the cylindrical body 16. A cover 9 is arranged above the gasket 6, and the top of the cover 9 is closed and the lower end is open. Four guide sleeves 27 are fixed in the gasket 6, and four guide columns 28 are fixed on the inner wall of the cover 9. The four guide columns 28 correspond to the four guide sleeves 27 respectively, and the guide sleeves 27 and the guide columns 28 are slidably matched. At the same time, a second arc groove 10 corresponding to the first arc groove 7 is provided on the cover 9. Align the guide column 28 with the guide sleeve 27, and then press the cover 9 toward the gasket sleeve 6. The lower edge of the cover 9 can compress the second sealing ring 12, and the second arc groove 10 cooperates with the first arc groove 7 to compress the cylindrical body 16, thereby achieving sealing between the cover 9 and the gasket sleeve 6 and sealing between the wire 14 and the cylindrical body 16.

[0040] In order to allow the cover 9 to press the cushion cover 6, Figure 5 As shown, the present invention has a clearance hole 11 on the cover 9, and the locking cap 4 can pass through the clearance hole 11 and cooperate with the limiting sleeve 1 threadedly. At the same time, a circle of convex edge 5 is fixed on the outer wall of the locking cap 4, and the diameter of the convex edge 5 is larger than the diameter of the clearance hole 11. A third sealing ring 13 is sleeved on the locking cap 4 between the convex edge 5 and the cover 9. When the locking cap 4 is locked with the limiting sleeve 1, the convex edge 5 can press the third sealing ring 13 against the edge of the clearance hole 11, and can also provide pressure to press the cover 9 to the cushion sleeve 6, and force to press the cushion sleeve 6 to the battery, so that the first sealing ring 8, the second sealing ring 12 and the third sealing ring 13 play a sealing role, and realize the sealing of the connection between the wire 14 and the electrode; the limiting sleeve 1, the locking cap 4, the cover 9 and the cushion sleeve 6 are all plastic parts, so the connection between the wire 14 and the electrode can be isolated from the outside world to avoid leakage.

[0041] Embodiment 2:

[0042] On the basis of the first embodiment, when the cover 9 is pressed against the cushion sleeve 6, the first arc groove 7 and the second arc groove 10 can only press the cylindrical body 16 from the upper and lower directions, and there is a possibility that the cylindrical body 16 is not pressed tightly at the gap between the first arc groove 7 and the second arc groove 10. Therefore, if Figures 5 to 8 As shown, the present invention has a first extrusion portion 17 fixed on the inner side wall of the cushion sleeve 6, a first driving groove 18 is provided in the first extrusion portion 17, and a first limiting plate 22 is provided on the side of the first extrusion portion 17 away from the inner wall of the cushion sleeve 6. Figure 8As shown, the first driving groove 18 is V-shaped as a whole. In the present invention, a second extrusion portion 19 is fixed on the inner side wall of the cover 9, a second driving groove 20 is formed in the second extrusion portion 19, a second limiting plate 23 is provided on the side of the second extrusion portion 19 away from the inner wall of the cover 9, and the second driving groove 20 is also V-shaped.

[0043] like Figure 8 As shown, there is a half ring 21 on each of the left and right sides of the cylindrical body 16, and the upper and lower ends of the two half rings 21 are respectively located in the first driving groove 18 and the second driving groove 20. When the cover 9 is pressed against the cushion sleeve 6, the first driving groove 18 cooperates with the second driving groove 20 to squeeze the two half rings 21, so that the two half rings 21 tighten the cylindrical body 16 from the left and right sides of the cylindrical body 16. Through the above arrangement, the two half rings 21 can tighten the cylindrical body 16 from the left and right sides, and the first arc groove 7 and the second arc groove 10 can tighten the cylindrical body 16 from the upper and lower sides, thereby improving the sealing between the cylindrical body 16 and the wire 14.

[0044] Combination Figure 7 and Figure 8 It can be seen that the first limiting plate 22 and the second limiting plate 23 can limit the movement of the half ring 21 to prevent the half ring 21 from being separated from the first driving groove 18 and the second driving groove 20 .

[0045] Embodiment three:

[0046] On the basis of the first and second embodiments, the present invention further proposes a third embodiment. In this embodiment, in order to improve the stability of the connection between the wire 14 and the electrode, as shown in FIG. Figure 5 and Fig. 9 As shown, the present invention has a locking plate 24 fixed on the inner wall of the cover 9, and two abutting plates 25 distributed on both sides of the locking plate 24 are fixed in the cushion sleeve 6. Figure 5 As shown, the wire 14 passes between the abutting plate 25 and the locking plate 24. When the cover 9 moves toward the cushion sleeve 6, the locking plate 24 gradually bends the wire 14. When the cover 9 abuts against the cushion sleeve 6, the locking plate 24 cooperates with the two abutting plates 25 to abut the wire 14.

[0047] like Fig. 9 As shown, the locking plate 24 of the present invention is twisted, and a wire groove 26 is provided on the locking plate 24, and the wire 14 can pass through the wire groove 26. The wire groove 26 is twisted with the locking plate 24, so the groove wall of the wire groove 26 is also spiral. When the cover 9 moves toward the cushion sleeve 6, the locking plate 24 moves accordingly. While the locking plate 24 presses the wire 14 downward, the spiral groove wall can drive the wire 14 to twist a certain angle, increase the resistance of the wire 14 to be drawn out, thereby preventing the wire core 15 from loosening or disengaging from the threaded seat 3 due to vibration or other reasons.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electric vehicle battery electrode connection device, characterized in that: include: A limiting sleeve, which is arranged on the bolt, and the bolt is threadedly matched with the threaded seat on the battery electrode; A locking cap, which is threadedly matched with the limiting sleeve, and a convex edge is fixed on the locking cap; A gasket, which is covered on the threaded seat, has a first arc groove, and a first sealing ring is provided between the gasket and the battery; A cover, the cover is arranged on the cushion sleeve, a second arc groove corresponding to the first arc groove is provided on the cover, a clearance hole for the locking cap to pass through is provided on the cover, a second sealing ring is provided between the cover and the cushion sleeve, and a third sealing ring is provided between the flange and the cover; The wire passes through between the first arc groove and the second arc groove, and one end of the wire core is wound around the bolt; when the bolt is locked on the threaded seat, the limiting sleeve presses the wire core against the threaded seat; when the locking cap is locked on the limiting sleeve, the locking cap presses the cover onto the cushion sleeve, and the cushion sleeve presses onto the battery; The second sealing ring is provided with a cylindrical body, the cylindrical body is located between the first arc groove and the second arc groove, and the wire passes through the cylindrical body; A first extrusion portion is provided on the inner side wall of the cushion cover, and a first driving groove is provided in the first extrusion portion; A second extrusion portion is provided on the inner side wall of the cover, and a second driving groove is provided in the second extrusion portion; the first driving groove and the second driving groove are both V-shaped as a whole; There are two half rings abutting against the cylindrical body; When the distance between the cover and the cushion sleeve is reduced, the first driving groove cooperates with the second driving groove to squeeze the two half rings so that the half rings clamp the cylindrical body; A locking plate is fixed inside the cover, and two abutting plates distributed on both sides of the locking plate are fixed inside the cushion sleeve. The wire passes between the abutting plates and the locking plates; when the cover abuts against the cushion sleeve, the locking plate cooperates with the two abutting plates to bend and tighten the wire.

2. An electric vehicle battery electrode connection device as claimed in claim 1, characterized in that: A first limiting plate and a second limiting plate are fixed to the first extrusion portion and the second extrusion portion, respectively. The first limiting plate and the second limiting plate are used to prevent the half ring from escaping from the first driving groove and the second driving groove.

3. An electric vehicle battery electrode connection device as claimed in claim 1, characterized in that: The locking plate is twisted, a wire passing groove is arranged on the locking plate, and the groove wall of the wire passing groove is spiral.

4. An electric vehicle battery electrode connection device as claimed in claim 1, characterized in that: A plurality of guide sleeves are fixed on the inner wall of the cushion sleeve, and a plurality of guide posts which are respectively slidably matched with the plurality of guide sleeves are fixed on the inner wall of the cover.

5. The electric vehicle battery electrode connection device according to claim 1, characterized in that: A limiting groove is arranged at the bottom of the cushion sleeve, and a convex ridge cooperating with the limiting groove is arranged on the first sealing ring.

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