Protection device for charging battery of electric vehicle

Abstract

The utility model relates to the field of battery charging protection devices, and discloses a protection device for charging an electric vehicle battery, which comprises a charging cabinet, the front part of the charging cabinet is rotatably connected with a cabinet door, the rear part of the charging cabinet is fixedly connected with a ventilation plate, and the front surface of the ventilation plate is provided with a fan. A limiting block is fixedly connected to the front portion of the inner wall of the charging cabinet, a fixing assembly is arranged on the inner wall of the charging cabinet, and a shielding assembly is arranged on the inner wall of the ventilation plate. According to the utility model, through the shielding assembly, when a user places the battery on the fixing plate to charge the battery, the battery presses the fixing plate to enable the fixing plate to move downwards, and then the shielding plate is driven to move downwards to expose the ventilation slot in the ventilation plate, so that the heat dissipation performance of the device is not influenced when the device charges the battery; and in a daily state, the charging cabinet can protect the internal space to be relatively clean, dust, rainwater and the like are prevented from entering, and the safety of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery charging protection devices, and in particular to a protection device for charging electric vehicle batteries. Background Technology

[0002] Electric vehicle battery charging protection devices are used to ensure charging safety and extend battery life. They can provide protection against dust and isolate the battery from external humid air during the charging process, and have short circuit protection functions to prevent the battery from being damaged by abnormal charging, thereby improving charging safety and battery life.

[0003] In the current technology, most electric vehicle battery charging cabinets have their ventilation panels on the back open for extended periods of time to provide heat dissipation. However, during this process, dust can be blown into the charging cabinet or rainwater can enter, which can lead to charging interface malfunctions and short circuits, resulting in poor safety. Therefore, a protection device for electric vehicle battery charging is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a protection device for charging electric vehicle batteries, which aims to improve the problem in the prior art that "dust or rainwater can be blown into the charging cabinet, leading to the risk of charging interface failure and short circuit, resulting in poor safety."

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for charging electric vehicle batteries, comprising a charging cabinet, a cabinet door rotatably connected to the front of the charging cabinet, a ventilation plate fixedly connected to the rear of the charging cabinet, a fan provided on the front surface of the ventilation plate, a limit block fixedly connected to the front of the inner wall of the charging cabinet, a fixing component provided on the inner wall of the charging cabinet, a shielding component provided on the inner wall of the ventilation plate, the shielding component comprising a fixing frame, the upper surface of the front inner wall of the fixing frame being elastically connected to the limit block by a push spring, connecting rods fixedly connected to both ends of the rear surface of the fixing frame, two sets of connecting rods being fixedly connected by a shielding plate, the lower part of the connecting rods being elastically connected to the inner wall of the ventilation plate by a support spring, a battery being placed on the inner wall of the fixing frame, and multiple sets of ventilation slots being provided on the inner wall of the ventilation plate.

[0006] As a further description of the above technical solution:

[0007] The connecting rod is L-shaped.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a protective box, the right surface of which is fixedly connected to the inner wall of the charging cabinet, and an insert block is slidably connected to the inner wall of the protective box.

[0010] As a further description of the above technical solution:

[0011] The left side of the insert is designed as a slope.

[0012] As a further description of the above technical solution:

[0013] The right surface of the fixing frame is provided with a slot, and the outer wall of the insert block is inserted into the inner wall of the slot.

[0014] As a further description of the above technical solution:

[0015] The insert block and the protective box are elastically connected by a reset spring.

[0016] As a further description of the above technical solution:

[0017] A pull plate is fixedly connected to the front surface of the insert block.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the fixed frame is fixedly connected with multiple sets of support rods, which are spaced apart.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by means of a shielding component, when the user places the battery on the fixed plate to charge the battery, the battery will press the fixed plate, causing the fixed plate to move downward, which in turn drives the shielding plate to move downward and expose the ventilation slot on the ventilation plate. This ensures that the device does not affect its heat dissipation performance when charging the battery, and under normal conditions, the charging cabinet can keep the internal space relatively clean, preventing dust and rainwater from entering, thus improving the safety of the device.

[0022] 2. In this utility model, by means of a fixing component, after the user has finished charging the device, the fixing plate will move upward under the action of the support spring and the push spring. At this time, the outer wall of the fixing frame presses against the slope of the insertion block, causing the insertion block to retract into the protective box. Then, under the action of the reset spring, it is inserted into the slot. This prevents the shield from being opened by external force when there is no battery charging, thus enhancing the stability of the device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a schematic diagram of the open state of the three-dimensional structure of the overall device in this utility model;

[0025] Figure 3This is a three-dimensional cross-sectional view of the shielding component in this utility model;

[0026] Figure 4 This is a three-dimensional cross-sectional view of the fixing frame in this utility model;

[0027] Figure 5 This is a three-dimensional cross-sectional view of the fixing component in this utility model.

[0028] Legend:

[0029] 1. Charging cabinet; 2. Cabinet door; 3. Shielding component; 4. Limiting block; 5. Battery; 6. Fan; 7. Ventilation plate; 8. Fixing component; 31. Fixing frame; 32. Connecting rod; 33. Support spring; 34. Baffle plate; 35. Push spring; 81. Protective box; 82. Reset spring; 83. Insert block; 84. Pull plate; 85. Slot. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-3This utility model provides an embodiment of a protective device for charging an electric vehicle battery, including a charging cabinet 1 for protecting the internal battery 5. The front of the charging cabinet 1 is rotatably connected to a cabinet door 2 for isolating the external environment. The rear of the charging cabinet 1 is fixedly connected to a ventilation plate 7 for heat dissipation during battery charging. A fan 6 is provided on the front surface of the ventilation plate 7 for drawing away air from the inside of the charging cabinet 1. A limiting block 4 is fixedly connected to the front of the inner wall of the charging cabinet 1 to limit the front end of a fixing frame 31, preventing the fixing frame 31 from falling due to lack of support. The inner wall of the charging cabinet 1 is provided with a fixing component 8 to prevent the shielding plate 34 from being opened arbitrarily when the battery 5 is not charging. The inner wall of the ventilation plate 7 is provided with a shielding component 3 to prevent external dust and rainwater from entering through the slots of the ventilation plate 7 when the battery 5 is not charging. The shielding component 3 includes a fixing frame 31 for supporting the battery 5. The front inner wall of the fixing frame 31 is connected to the limiting block 4. The upper surface of block 4 is elastically connected by a push spring 35 that continuously supports the fixing frame 31 and has a smaller elastic force than the weight of the battery 5. When there is no pressure from the battery 5, the front end of the fixing frame 31 is lifted up, keeping the front and rear ends of the fixing frame 31 horizontal. The left and right ends of the rear surface of the fixing frame 31 are fixedly connected with connecting rods 32 for connecting the fixing frame 31 and the baffle plate 34. The two sets of connecting rods 32 are fixedly connected by the baffle plate 34 for blocking the slot of the ventilation plate 7 to prevent dust and rainwater from entering. The lower part of the connecting rod 32 is elastically connected to the inner wall of the ventilation plate 7 by a support spring 33 for continuously supporting the connecting rod 32, so that the connecting rod 32 can automatically return to its original position after movement. The elastic force of the support spring 33 and the push spring 35 is not as great as the weight of the battery 5. The battery 5 is placed on the inner wall of the fixing frame 31. The inner wall of the ventilation plate 7 is provided with ventilation slots for ventilating the inside of the charging cabinet 1, and there are multiple sets of them.

[0032] Reference Figures 3-5 The connecting rod 32 is L-shaped. The fixing component 8 includes a protective box 81 for protecting the internal device. The right surface of the protective box 81 is fixedly connected to the inner wall of the charging cabinet 1. The inner wall of the protective box 81 is slidably connected to a plug 83 for inserting into the inner wall of the slot 85, so that the position of the fixing frame 31 is fixed and the shield 34 is prevented from being opened arbitrarily by external force. The left side of the plug 83 is set as a slope, so that the plug 83 is set as a one-way limit and will not be blocked when the fixing frame 31 is reset upward. The right surface of the fixing frame 31 is provided with a slot 85 for accommodating the plug 83. The outer wall of the plug 83 is inserted into the inner wall of the slot 85.

[0033] Reference Figures 3-5The plug 83 and the protective box 81 are elastically connected by a return spring 82 that continuously supports the plug 83, so that the plug 83 can automatically return to its original position after being displaced by external force. The front surface of the plug 83 is fixedly connected to a pull plate 84 for easy movement of the plug 83 by the operator. The inner wall of the fixing frame 31 is fixedly connected to multiple sets of support rods for supporting the battery 5 and having little impact on the ventilation effect below the battery 5. The multiple sets of support rods are spaced apart to prevent the fixing frame 31 from blocking the heat dissipation of the battery 5.

[0034] Working principle: First, open cabinet door 2, place the battery 5 to be charged on top of the fixing bracket 31, and push the pull plate 84 to the right. The movement of the pull plate 84 causes the insertion block 83 to move to the right. At this time, the return spring 82 undergoes elastic deformation, and the pull plate 84 is continuously pushed until the insertion block 83 disengages from the slot 85. At this time, the fixing bracket 31 moves downward under the pressure of the battery 5, and the front part of the fixing bracket 31 contacts the limiting block 4. The support spring 33 and the push spring 35 undergo elastic deformation. The downward movement of the fixing bracket 31 causes the connecting rod 32 to move downward, which in turn causes the cover plate 34 to move downward, allowing the passage... When the ventilation slots on the surface of the air plate 7 are exposed, the fan 6 is turned on and starts working to dissipate heat from the inside of the charging cabinet 1. After the battery 5 is charged, the battery 5 is removed, the external force on the fixing bracket 31 is removed, the support spring 33 and the push spring 35 release elastic potential energy, causing the fixing bracket 31 to move upward. The connecting rod 32 drives the baffle plate 34 to block the ventilation slots of the ventilation plate 7 again to prevent external dust from entering. The fixing bracket 31 contacts the slope of the insertion block 83, causing the insertion block 83 to retract and finally be inserted into the slot 85 under the action of the reset spring 82, completing the operation.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for charging electric vehicle batteries, comprising a charging cabinet (1), characterized in that: The front of the charging cabinet (1) is rotatably connected to a cabinet door (2), the rear of the charging cabinet (1) is fixedly connected to a ventilation plate (7), the front surface of the ventilation plate (7) is provided with a fan (6), the front of the inner wall of the charging cabinet (1) is fixedly connected to a limit block (4), the inner wall of the charging cabinet (1) is provided with a fixing component (8), and the inner wall of the ventilation plate (7) is provided with a shielding component (3). The shielding component (3) includes a fixing frame (31). The inner wall of the front part of the fixing frame (31) is elastically connected to the upper surface of the limiting block (4) by a push spring (35). The left and right ends of the rear surface of the fixing frame (31) are fixedly connected to connecting rods (32). The two sets of connecting rods (32) are fixedly connected by a shielding plate (34). The lower part of the connecting rod (32) is elastically connected to the inner wall of the ventilation plate (7) by a support spring (33). A battery (5) is placed on the inner wall of the fixing frame (31). The inner wall of the ventilation plate (7) is provided with ventilation slots in multiple sets.

2. The electric vehicle battery charging protection device according to claim 1, characterized in that: The connecting rod (32) is L-shaped.

3. The electric vehicle battery charging protection device according to claim 1, characterized in that: The fixing component (8) includes a protective box (81), the right surface of which is fixedly connected to the inner wall of the charging cabinet (1), and a plug (83) is slidably connected to the inner wall of the protective box (81).

4. A protective device for charging an electric vehicle battery according to claim 3, characterized in that: The left side of the insert (83) is set as a slope.

5. A protective device for charging an electric vehicle battery according to claim 4, characterized in that: The right surface of the fixing frame (31) is provided with a slot (85), and the outer wall of the insert (83) is inserted into the inner wall of the slot (85).

6. A protection device for charging an electric vehicle battery according to claim 5, characterized in that: The insert (83) and the protective box (81) are elastically connected by a return spring (82).

7. A protective device for charging an electric vehicle battery according to claim 6, characterized in that: A pull plate (84) is fixedly connected to the front surface of the insert (83).

8. A protective device for charging an electric vehicle battery according to claim 1, characterized in that: The inner wall of the fixed frame (31) is fixedly connected with multiple sets of support rods, which are spaced apart.

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