Short circuit prevention structure of battery terminal

Abstract

The utility model relates to the technical field of batteries, in particular to a battery terminal short circuit prevention structure which comprises a shell provided with a battery structure, a top cover arranged at the top of the shell, terminal posts symmetrically arranged on the top cover, protective cylinders arranged above the terminal posts, connecting wires arranged above wiring holes, and connecting bolts arranged at the bottom of the connecting wires and corresponding to the wiring holes. A sealing rubber ring sleeves the outer wall, close to the bottom, of the protective cylinder; a sealing sleeve is arranged at the top of the protective cylinder; according to the short circuit prevention structure of the battery terminal, the top cover is combined with the shell, so that the internal battery structure is protected and matched, the bottom of the wiring terminal post is electrically connected with the battery structure through a wire, then a connecting bolt with a connecting wire penetrates through a sealing sleeve, the sealing sleeve is fixedly bonded with the top of a protective cylinder, and the connecting bolt is in threaded connection with a wiring hole; combined installation of the connecting wire and the terminal post is achieved, the protective cylinder is in threaded connection with the top cover, and under cooperation of the sealing rubber ring, the sealing performance of the protective cylinder is improved, and the influence that water drops erode the terminal post is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a short - circuit prevention structure for battery terminals. Background Art

[0002] Although lead - acid batteries have lower energy and shorter deep - cycle life compared with lithium batteries, nickel - metal hydride batteries, etc., due to the advantages of small self - discharge, excellent high - and low - temperature performance, mature production and recycling technologies, and low price, positive and negative terminals are provided on the battery to facilitate wire connection and cooperation.

[0003] The utility model with the publication number CN205828521U discloses a short - circuit prevention structure for side - out terminals of a storage battery, which includes a terminal and a middle cover. The terminal is formed by connecting a copper sheet and a copper column in a "J" shape. One end of the partition wall of the middle cover is provided with a pole - column welding groove and a copper - column placement groove. The inner end of the copper sheet is placed in the pole - column welding groove to connect with the pole column. The outer end of the copper sheet crosses the partition wall and is connected with the horizontally - placed copper column placed in the copper - column placement groove. Part of the copper sheet is exposed on the upper surface of the middle cover. Protective bosses are provided on the middle cover on both sides of the copper sheet exposed on the upper surface of the middle cover. A protective cover is provided between the protective bosses, and the protective cover covers the exposed copper sheet.

[0004] The above - mentioned technical solution optimizes the battery and battery - box assembly structure, facilitates the installation of battery connecting wires by vehicle manufacturers, has strong processability, meets the installation requirements of different customers, and prevents the possibility of short - circuit between the positive and negative terminals of this structure, avoiding risks. However, the positive and negative terminals are in long - term contact with the outside air, which is easy to be moist and erode the terminals. Terminal corrosion affects long - term use and is prone to short - circuit and danger. Content of the Utility Model

[0005] The purpose of the utility model is to provide a short - circuit prevention structure for battery terminals to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution:

[0007] A short - circuit prevention structure for battery terminals includes a housing containing a battery structure. A top cover is provided on the top of the housing. Wiring terminal posts are symmetrically provided on the top cover. Protective cylinders are provided above the wiring terminal posts. A wiring hole is opened at the center of the top of the wiring terminal post. A connecting wire is provided above the wiring hole. A connecting bolt is provided at the corresponding position of the bottom of the connecting wire and the wiring hole. External threads are provided on the outer wall of the protective cylinder near the bottom. Threaded grooves are provided on the upper surface of the top cover at the positions of the wiring terminal posts. A sealing rubber ring is sleeved on the outer wall of the protective cylinder near the bottom. A slot is opened on the upper surface of the top cover corresponding to the bottom of the sealing rubber ring. A sealing sleeve is provided on the top of the protective cylinder.

[0008] Further, the width of the outer wall of the top cover is adapted to the width of the outer wall of the housing, and the bottom of the top cover is fixedly connected to the top of the housing by screws

[0009] In the present utility model, under the screw fixed connection, it helps the stable combined installation and cooperation of the housing and the top cover.

[0010] Specifically, the bottom of the terminal post is electrically connected to the battery structure inside the housing through a wire.

[0011] In the present utility model, the bottom of the terminal post is electrically connected to the battery structure, which increases the stability of the overall installation.

[0012] Secondly, the outer diameter of the protective cylinder is adapted to the inner diameter of the threaded groove, and the protective cylinder is threadedly connected to the threaded groove through an external thread.

[0013] In the present utility model, the outer wall of the protective cylinder is all provided with an external thread, and the external thread is in threaded cooperation with the threaded groove, which helps the tight installation and cooperation of the protective cylinder and the top cover.

[0014] Furthermore, the sealing sleeve is in a frustum shape, the sealing sleeve is tightly inserted and fitted with the top of the protective cylinder, and the inner wall of the bottom end of the sealing sleeve is tightly attached to and adhesively fixed to the outer wall of the protective cylinder.

[0015] In the present utility model, the sealing sleeve is installed and fitted with the top of the protective cylinder to achieve the sealing fit of the top of the protective cylinder, reducing the entry of water droplets in the external environment into the interior and contacting the terminal post to cause erosion effects.

[0016] It should be noted that the bottom diameter of the connecting bolt is adapted to the inner diameter of the wiring hole, the connecting bolt is threadedly connected to the wiring hole, the bottom of the connecting wire is welded and fixed to the top of the connecting bolt, the connecting wire passes through the middle of the sealing sleeve, and the sealing sleeve is adhesively fixed to the outer wall of the connecting wire.

[0017] In the present utility model, the connecting bolt is threadedly connected to the wiring hole, which is convenient for combined installation and cooperation. The connecting wire passes through the sealing sleeve, increasing the stability of the combination with the protective cylinder.

[0018] Furthermore, the inner ring of the sealing rubber ring is adhesively fixed to the outer wall of the protective cylinder, and the bottom of the sealing rubber ring is inserted and adhesively fixed to the slot.

[0019] In the present utility model, the sealing rubber ring is made of epoxy resin material, and the installation of the sealing rubber ring increases the sealing stability of the protective cylinder and the top cover, reducing the entry of external water droplets from the connection between the protective cylinder and the top cover into the interior and avoiding the erosion effect on the terminal post.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. The utility model realizes the protection and cooperation of the internal battery structure by setting the combination of the top cover and the outer shell. The bottom of the terminal post is electrically connected to the battery structure through a wire. Then, the connecting bolt with a connecting wire passes through the sealing sleeve, and the sealing sleeve is adhesively fixed to the top of the protective cylinder. The connecting bolt is threadedly connected to the wiring hole, realizing the combined installation of the connecting wire and the terminal post. The protective cylinder is threadedly connected to the top cover, and with the cooperation of the sealing rubber ring, the sealing performance of the protective cylinder is increased, reducing the influence of water droplets eroding the terminal post.

[0022] 2. The utility model adhesively fixes the sealing sleeve and the connecting wire, increasing the sealing performance of the top of the protective cylinder without affecting the penetration and use of the connecting wire. The sealing rubber ring is made of epoxy resin, increasing the stability of the adhesive combination of the top cover and the protective cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 is a schematic diagram of the combined structure of the outer shell and the top cover of the utility model;

[0025] Figure 3 is a schematic diagram of the combined structure of the top cover, the terminal post and the protective cylinder of the utility model;

[0026] Figure 4 is a schematic sectional view of the combined structure of the top cover, the terminal post and the protective cylinder of the utility model.

[0027] The meanings of the various reference numerals in the figure are as follows:

[0028] 1. Outer shell;

[0029] 2. Top cover; 20. Terminal post; 200. Wiring hole; 21. Threaded groove; 22. Slot;

[0030] 3. Protective cylinder; 30. External thread; 31. Sealing rubber ring; 32. Sealing sleeve;

[0031] 4. Connecting wire; 40. Connecting bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figures 1 - 4 , this embodiment provides a technical solution:

[0034] A short - circuit prevention structure for a battery terminal, comprising a housing 1 containing a battery structure. A top cover 2 is provided at the top of the housing 1. The width of the outer wall of the top cover 2 is adapted to the width of the outer wall of the housing 1. The bottom of the top cover 2 is fixedly connected to the top of the housing 1 by screws.

[0035] In the present utility model, under the screw fixed connection, it helps to stably combine and install the housing 1 and the top cover 2 in cooperation.

[0036] Furthermore, connection terminal posts 20 are symmetrically provided on the top cover 2. The bottoms of the connection terminal posts 20 are electrically connected to the battery structure inside the housing 1 through wires.

[0037] In the present utility model, the bottoms of the connection terminal posts 20 are electrically connected to the battery structure, increasing the stability of the overall installation.

[0038] It should be noted that protective cylinders 3 are provided above the connection terminal posts 20. A connection hole 200 is opened at the center of the top of the connection terminal post 20. A connection wire 4 is provided above the connection hole 200. A connection bolt 40 is provided at the corresponding position at the bottom of the connection wire 4 to the connection hole 200. An external thread 30 is provided at the position near the bottom of the outer wall of the protective cylinder 3. A threaded groove 21 is provided on the upper surface of the top cover 2 at the position of the connection terminal post 20. The outer diameter of the protective cylinder 3 is adapted to the inner diameter of the threaded groove 21. The protective cylinder 3 is threadedly connected to the threaded groove 21 through the external thread 30.

[0039] In the present utility model, the outer walls of the protective cylinders 3 are all provided with external threads 30, and the external threads 30 are in threaded cooperation with the threaded grooves 21, which helps the protective cylinders 3 to be tightly installed and matched with the top cover 2.

[0040] Furthermore, a sealing rubber ring 31 is sleeved on the outer wall of the protective cylinder 3 near the bottom. A slot 22 is opened on the upper surface of the top cover 2 corresponding to the bottom of the sealing rubber ring 31. A sealing sleeve 32 is provided at the top of the protective cylinder 3.

[0041] Secondly, the sealing sleeve 32 is frustum - shaped. The sealing sleeve 32 is tightly inserted and matched with the top of the protective cylinder 3, and the inner wall of the bottom end of the sealing sleeve 32 is tightly attached to and adhesively fixed to the outer wall of the protective cylinder 3.

[0042] In the present utility model, the sealing sleeve 32 is installed and matched with the top of the protective cylinder 3 to achieve the sealing cooperation of the top of the protective cylinder 3, reducing the entry of water droplets in the external environment into the interior and contacting the connection terminal posts 20 to cause erosion effects.

[0043] Specifically, the diameter of the bottom end of the connection bolt 40 is adapted to the inner diameter of the connection hole 200. The connection bolt 40 is threadedly connected to the connection hole 200. The bottom of the connection wire 4 is welded and fixed to the top of the connection bolt 40. The connection wire 4 passes through the middle of the sealing sleeve 32, and the sealing sleeve 32 is adhesively fixed to the outer wall of the connection wire 4.

[0044] In the present utility model, the connecting bolt 40 is threadedly connected to the wiring hole 200, facilitating combined installation and cooperation. The connecting wire 4 passes through the sealing sleeve 32, enhancing the stability of the combination with the protective cylinder 3.

[0045] It is worth adding that the inner ring of the sealing rubber ring 31 is adhesively fixed to the outer wall of the protective cylinder 3, and the bottom of the sealing rubber ring 31 is inserted into and adhesively fixed to the slot 22.

[0046] In the present utility model, the sealing rubber ring 31 is made of epoxy resin material, and the installation of the sealing rubber ring 31 enhances the sealing stability between the protective cylinder 3 and the top cover 2, reducing the entry of external water droplets from the connection between the protective cylinder 3 and the top cover 2 into the interior, and avoiding the influence of corrosion on the terminal post 20.

[0047] When the short - circuit prevention structure of the battery terminal in this embodiment is in use, the user first combines and fixes the top cover 2 with the terminal post 20 to the housing 1. The terminal post 20 is electrically connected to the battery structure inside the housing 1 through a wire. Then, the connecting bolt 40 with the connecting wire 4 is passed through the sealing sleeve 32, and the sealing sleeve 32 is adhesively fixed to the connecting wire 4. Next, the sealing sleeve 32 is adhesively fixed to the protective cylinder 3. The protective cylinder 3 is threadedly connected to the thread groove 21 on the top cover 2, and with the cooperation of the sealing rubber ring 31, the protective cylinder 3 is adhesively fixed to the top cover 2, enhancing the waterproof property, reducing the influence of rust on the terminal post 20, and further reducing the influence of short - circuit caused by the rust of the terminal post 20, which helps to extend the overall service life.

Claims

1. A battery terminal short circuit prevention structure, comprising a housing (1) with a battery structure, a top cover (2) on the top of the housing (1), a terminal post (20) symmetrically arranged on the top cover (2), and a protective tube (3) above each of the terminal posts (20), characterized in that: A wiring hole (200) is provided at the center of the top of the terminal post (20), a connecting wire (4) is provided above the wiring hole (200), a connecting bolt (40) is provided at the bottom of the connecting wire (4) corresponding to the wiring hole (200), an external thread (30) is provided on the outer wall of the protective tube (3) near the bottom, a thread groove (21) is provided on the upper surface of the top cover (2) at the terminal post (20), a sealing rubber ring (31) is sleeved on the outer wall of the protective tube (3) near the bottom, a slot (22) is provided on the upper surface of the top cover (2) corresponding to the bottom of the sealing rubber ring (31), and a sealing sleeve (32) is provided on the top of the protective tube (3).

2. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The width of the outer wall of the top cover (2) matches the width of the outer wall of the outer shell (1), and the bottom of the top cover (2) is fixedly connected to the top of the outer shell (1) by screws.

3. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The bottom of the terminal post (20) is electrically connected to the battery structure inside the housing (1) via a wire.

4. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The outer diameter of the protective tube (3) is matched with the inner diameter of the thread groove (21), and the protective tube (3) is threadedly connected to the thread groove (21) via an external thread (30).

5. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The sealing sleeve (32) is in a truncated cone shape, and is tightly plugged into the top of the protective tube (3). The inner wall of the bottom end of the sealing sleeve (32) is tightly attached to and bonded to the outer wall of the protective tube (3).

6. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The bottom diameter of the connecting bolt (40) is matched with the inner diameter of the wiring hole (200), the connecting bolt (40) is threadedly connected to the wiring hole (200), the bottom of the connecting wire (4) is welded and fixed to the top of the connecting bolt (40), the connecting wire (4) passes through the middle of the sealing sleeve (32), and the sealing sleeve (32) is bonded and fixed to the outer wall of the connecting wire (4).

7. The battery terminal short circuit prevention structure according to claim 1, characterized in that: The inner ring of the sealing rubber ring (31) is bonded and fixed to the outer wall of the protective tube (3), and the bottom of the sealing rubber ring (31) is plugged into and bonded to the slot (22).

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