A protection circuit structure for preventing battery reverse connection

Abstract

The utility model relates to related technical field of electronic circuit especially, a kind of protection circuit structure of preventing battery reverse connection, including mounting plate, the side surface of mounting plate is provided with fixed mechanism, the side surface of fixed mechanism is provided with reverse connection protection plate, the side surface of reverse connection protection plate is opened with fixed hole, the side surface of reverse connection protection plate is opened with recess. This protection circuit structure of preventing battery reverse connection, using spring and triangular form clamping block cooperation's clamping type fixed structure, only need to push the fixed hole of reverse connection protection plate to alignment connecting block during installation, it can be realized the automatic clamping of clamping block and recess by the elastic force of spring, without traditional bolt fastening operation, greatly simplify installation process, reduce assembly time and operation threshold, also avoid the difficult problem of disassembly caused by traditional bolt easy rust, silk, and clamping block can be freely rotated by the design of connecting block and rotating seat, so that clamping block and recess form dislocation, not to separate clamping.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to a protection circuit structure for preventing reverse battery connection. Background Technology

[0002] Battery reverse connection protection structures are mainly divided into two categories, both of which aim to block reverse current. One type is a diode series structure, in which the diode is connected in the forward direction between the battery and the load. When connected in the forward direction, it conducts power and when connected in the reverse direction, it cuts off. Its advantage is that it is simple and inexpensive, but its disadvantage is that it has voltage loss. The other type is a MOSFET structure, which relies on the MOSFET and a resistor to control the conduction. When connected in the forward direction, it conducts power with low resistance and when connected in the reverse direction, it cuts off. Its advantage is that it has almost no loss and can carry a large current, but its disadvantage is that the structure is slightly more complex and the cost is slightly higher. Therefore, there is a special need for a battery reverse connection protection circuit structure.

[0003] However, existing reverse battery protection boards are usually fixed with bolts. This traditional fixing structure not only requires aligning each bolt hole and manually tightening them during the initial assembly, which is cumbersome and time-consuming, but also requires additional tools to remove the bolts during subsequent equipment maintenance or protection board repair. This not only increases the complexity of the maintenance process, but may also prolong downtime due to bolt corrosion, stripped threads, and other problems, which will have a certain impact on efficient operation and maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a protection circuit structure to prevent reverse battery connection, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protection circuit structure for preventing reverse battery connection, including a mounting plate, a fixing mechanism provided on one side surface of the mounting plate, a reverse connection protection plate provided on one side surface of the fixing mechanism, a fixing hole provided on one side surface of the reverse connection protection plate, a groove provided on one side surface of the reverse connection protection plate, and a rectifier bridge electrically connected to one side surface of the reverse connection protection plate. The fixing mechanism includes a rotating seat, which is fixedly connected to one side surface of the mounting plate. A circular groove is formed on the inner surface of the rotating seat, and a rotating hole is formed on one side surface of the rotating seat. A bearing is fixedly connected to the inner side of the circular groove, and a connecting block is fixedly connected to the inner side of the bearing. A movable hole is formed on one side surface of the connecting block, and a guide groove is formed on one side surface of the connecting block. A spring is slidably connected to the inner side of the movable hole, and a locking block is fixedly connected to one side surface of the spring.

[0006] Preferably, the outer wall dimensions of the bearing are adapted to the inner wall dimensions of the circular groove, and the mounting plate and the reverse connection protection plate are distributed parallel to each other along the vertical central axis of the connecting block.

[0007] Preferably, the circular groove and the rotating hole are connected, and the inner wall size of the rotating hole is adapted to the outer wall size of the connecting block.

[0008] Preferably, the inner wall size of the movable hole is adapted to the outer wall size of the spring, and the transverse central axis of the spring is perpendicular to the vertical central axis of the connecting block.

[0009] Preferably, the card block is provided with two of the same size, the cross-section of the card block is designed in a triangular shape, and the guide groove is provided with two of the same size, the inner wall size of the guide groove is adapted to the outer wall size of the card block.

[0010] Preferably, the movable hole and the guide groove are connected, and the inner wall size of the bearing is adapted to the outer wall size of the connecting block.

[0011] Preferably, the vertical central axes of the connecting block, bearing, and rotating seat coincide, the groove is provided in two sets of the same size, each set is provided with two of the same size, and the inner wall size of the fixing hole is adapted to the outer wall size of the connecting block.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The system adopts a snap-fit ​​fixing structure with spring and triangular locking block. During installation, simply align the fixing hole of the reverse protection plate with the connecting block and push it. The spring force will automatically engage the locking block with the groove, eliminating the need for traditional bolt tightening. This greatly simplifies the installation process, reduces assembly time and operation threshold, and avoids the problems of easy corrosion and stripping of traditional bolts, which can lead to disassembly difficulties. 2. The connecting block is designed with bearings and a rotating seat, allowing it to rotate freely, thus creating a misalignment between the locking block and the groove, preventing them from disengaging. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the reverse connection protection plate, fixing hole, groove and rectifier bridge structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of the fixing mechanism of this utility model; Figure 4 This is a schematic diagram showing the position and structure of the movable hole and guide groove of this utility model; Figure 5 This is a schematic diagram of the spring and locking block structure of this utility model; Figure 6 This is a schematic diagram of the rotating seat, circular groove, and rotating hole structure of this utility model.

[0014] In the diagram: 1. Mounting plate; 2. Fixing mechanism; 201. Rotating seat; 202. Circular groove; 203. Rotary hole; 204. Bearing; 205. Connecting block; 206. Movable hole; 207. Guide groove; 208. Spring; 209. Locking block; 3. Reverse connection protection plate; 4. Fixing hole; 5. Groove; 6. Rectifier bridge. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 This utility model provides a technical solution: a protection circuit structure for preventing reverse battery connection, including a mounting plate 1, a fixing mechanism 2 is provided on one side surface of the mounting plate 1, a reverse connection protection plate 3 is provided on one side surface of the fixing mechanism 2, a fixing hole 4 is provided on one side surface of the reverse connection protection plate 3, a groove 5 is provided on one side surface of the reverse connection protection plate 3, and a rectifier bridge 6 is electrically connected to one side surface of the reverse connection protection plate 3. The fixing mechanism 2 includes a rotating seat 201, which is fixedly connected to one side surface of the mounting plate 1. A circular groove 202 is formed on the inner surface of the rotating seat 201, and a rotating hole 203 is formed on one side surface of the rotating seat 201. A bearing 204 is fixedly connected to the inner side of the circular groove 202, and a connecting block 205 is fixedly connected to the inner side of the bearing 204. A movable hole 206 and a guide groove 207 are formed on one side surface of the connecting block 205. A spring 208 is slidably connected to the inner side of the movable hole 206, and a locking block 209 is fixedly connected to one side surface of the spring 208. Through the arrangement of the rotating seat 201, circular groove 202, rotating hole 203, bearing 204, connecting block 205, movable hole 206, guide groove 207, spring 208, and locking block 209, during use, the fixing hole 4 of the reverse protection plate 3 is aligned with the connecting block 205 of the fixing mechanism 2. 5. When pushed, the locking block 209 is squeezed by the groove 5 and slides into the guide groove 207, compressing the spring 208 inside the movable hole 206. When the reverse connection protection plate 3 and the rotating seat 201 are in contact, the locking block 209 is reset under the elastic force of the spring 208 and forms a lock with the surface of the reverse connection protection plate 3, completing the boltless quick fixation. Then, the connecting block 205 is rotated by the bearing 204 inside the circular groove 202. The rotating hole 203 provides rotation space, so that the locking block 209 and the groove 5 are misaligned. When reversed, the rectifier bridge 6 uses the unidirectional conductivity of the diode to block the reverse current and protect the components from being burned out. When maintaining and disassembling, press the locking blocks 209 on both sides, and the reverse connection protection plate 3 can be pulled directly to separate the fixing hole 4 from the connecting block 205. No additional tools are required, and the problems of easy corrosion and stripping of traditional bolts are avoided, which can shorten maintenance downtime and reduce the difficulty and cost of operation and maintenance.

[0017] Furthermore, the outer wall dimensions of the bearing 204 are adapted to the inner wall dimensions of the circular groove 202. The mounting plate 1 and the reverse connection protection plate 3 are distributed parallel to each other along the vertical central axis of the connecting block 205. Through the setting of the bearing 204 and the circular groove 202, the outer wall dimensions of the bearing 204 and the inner wall dimensions of the circular groove 202 are precisely adapted during use, so that the bearing 204 can be stably fitted in the circular groove 202, avoiding radial displacement during rotation.

[0018] Furthermore, the circular groove 202 and the rotating hole 203 are connected. The inner wall size of the rotating hole 203 is adapted to the outer wall size of the connecting block 205. Through the setting of the rotating hole 203 and the connecting block 205, the rotating hole 203 can limit the connecting block 205 during use, ensuring that the connecting block 205 is not prone to displacement when rotating.

[0019] Furthermore, the inner wall dimensions of the movable hole 206 are adapted to the outer wall dimensions of the spring 208, and the transverse central axis of the spring 208 is perpendicular to the vertical central axis of the connecting block 205. Through the setting of the movable hole 206 and the spring 208, the movable hole 206 can play a limiting and guiding role for the spring 208 during use, ensuring that the spring 208 is not easily deformed and effectively improving the service life of the mechanism.

[0020] Furthermore, two locking blocks 209 of the same size are provided, and the cross-section of the locking blocks 209 is designed in a triangular shape. Two guide grooves 207 of the same size are provided, and the inner wall size of the guide grooves 207 is adapted to the outer wall size of the locking blocks 209. Through the setting of the guide grooves 207 and the locking blocks 209, the guide grooves 207 can guide the locking blocks 209 during use, ensuring that the locking blocks 209 are not prone to displacement or shaking.

[0021] Furthermore, the movable hole 206 and the guide groove 207 are connected, and the inner wall size of the bearing 204 is adapted to the outer wall size of the connecting block 205. Through the setting of the bearing 204 and the connecting block 205, the inner wall size of the bearing 204 and the outer wall size of the connecting block 205 are precisely adapted during use, so that the connecting block 205 can be firmly fitted into the inner side of the bearing 204 without any excess gap, making the mechanism run more stably.

[0022] Furthermore, the vertical central axes of the connecting block 205, bearing 204, and rotating seat 201 coincide. The groove 5 is provided with two sets of the same size, and each set has two of the same size. The inner wall size of the fixing hole 4 is adapted to the outer wall size of the connecting block 205. Through the setting of the fixing hole 4 and the connecting block 205, during use and installation, the reverse connection protection plate 3 can be quickly aligned with the connecting block 205 through the fixing hole 4, forming a clear assembly positioning guide. This avoids the locking block 209 from failing to accurately engage with the groove 5 due to positioning deviation, and greatly reduces installation operation errors.

[0023] Working principle: During installation, align the fixing hole 4 of the reverse connection protection plate 3 with the connecting block 205 of the fixing mechanism 2 and push it. When pushed, the locking block 209 is squeezed by the groove 5 and slides into the guide groove 207, compressing the spring 208 inside the movable hole 206. When the reverse connection protection plate 3 is in contact with the rotating seat 201, the locking block 209 is reset under the elastic force of the spring 208 and forms a locking with the surface of the reverse connection protection plate 3, completing the boltless quick fixation. Then, the connecting block 205 is rotated through the bearing 204. The rotating hole 203 provides rotation space, so that the locking block 209 and the groove 5 are misaligned. When reverse connected, the rectifier bridge 6 uses the unidirectional conductivity of the diode to block the reverse current, protecting the components from being burned out. During maintenance and disassembly, press the locking blocks 209 on both sides, and you can directly pull the reverse connection protection plate 3 to separate the fixing hole 4 from the connecting block 205. This completes the use of a protective circuit structure to prevent battery reverse connection.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protection circuit structure for preventing reverse battery connection, comprising a mounting plate (1), characterized in that: A fixing mechanism (2) is provided on one side surface of the mounting plate (1), a reverse connection protection plate (3) is provided on one side surface of the fixing mechanism (2), a fixing hole (4) is provided on one side surface of the reverse connection protection plate (3), a groove (5) is provided on one side surface of the reverse connection protection plate (3), and a rectifier bridge (6) is electrically connected to one side surface of the reverse connection protection plate (3). The fixing mechanism (2) includes a rotating seat (201), which is fixedly connected to one side surface of the mounting plate (1). A circular groove (202) is provided on the inner side surface of the rotating seat (201), and a rotating hole (203) is provided on one side surface of the rotating seat (201). A bearing (204) is fixedly connected to the inner side of the circular groove (202), and a connecting block (205) is fixedly connected to the inner side of the bearing (204). A movable hole (206) is provided on one side surface of the connecting block (205), and a guide groove (207) is provided on one side surface of the connecting block (205). A spring (208) is slidably connected to the inner side of the movable hole (206), and a locking block (209) is fixedly connected to one side surface of the spring (208).

2. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The outer wall dimensions of the bearing (204) are adapted to the inner wall dimensions of the circular groove (202), and the mounting plate (1) and the reverse connection protection plate (3) are distributed parallel to the vertical central axis of the connecting block (205).

3. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The circular groove (202) and the rotating hole (203) are connected, and the inner wall size of the rotating hole (203) is adapted to the outer wall size of the connecting block (205).

4. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The inner wall size of the movable hole (206) is adapted to the outer wall size of the spring (208), and the transverse central axis of the spring (208) is perpendicular to the vertical central axis of the connecting block (205).

5. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The card block (209) has two of the same size, and the cross-section of the card block (209) is triangular. The guide groove (207) has two of the same size, and the inner wall size of the guide groove (207) is adapted to the outer wall size of the card block (209).

6. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The movable hole (206) and the guide groove (207) are connected, and the inner wall size of the bearing (204) is adapted to the outer wall size of the connecting block (205).

7. The protection circuit structure for preventing reverse battery connection according to claim 1, characterized in that: The vertical central axes of the connecting block (205), bearing (204) and rotating seat (201) coincide. The groove (5) is provided with two sets of the same size, and each set is provided with two of the same size. The inner wall size of the fixing hole (4) is adapted to the outer wall size of the connecting block (205).

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