Overload protection device for electric vehicle charging and discharging module

Abstract

This utility model belongs to the field of power electronics technology, and particularly relates to an overload protection device for electric vehicle charging and discharging modules. It includes a charging and discharging module body and a charging and discharging port. The charging and discharging port is located on one side of the charging and discharging module body. It also includes a support shell, a temperature detector, a detection rod, and a control panel. The support shell is installed on top of the charging and discharging module body, and the temperature detector is also installed on top of the support shell. The detection rod, located at the bottom of the support shell, extends into the support shell. The control panel is installed on the upper part of the support shell. Through the coordinated operation of the temperature detector, detection rod, control panel, and heat sink, forced cooling is automatically activated when the temperature of the charging and discharging module body exceeds the limit to prevent overheating damage. Simultaneously, when the charging and discharging module body is fully charged or the leakage current detection board detects an insulation abnormality, the external device plug is automatically disconnected, achieving physical power cut-off. This effectively avoids the risks of overcharging, electric shock, short circuit, and electrical burnout, improving system stability and safety.

Description

Technical Field

[0001] This utility model belongs to the field of power electronics technology, and in particular relates to an overload protection device for electric vehicle charging and discharging modules. Background Technology

[0002] With the rapid development of new energy technologies and the continuous advancement of environmental protection policies, electric vehicles have been widely used in daily travel. As a core component of electric vehicle energy management, the charging and discharging module undertakes key functions such as battery charging, power output, power regulation, and status monitoring. Its operational safety and stability directly affect the overall vehicle performance and user safety.

[0003] However, in actual operation, the charging and discharging module often experiences excessive current, rapid temperature rise, or continuous overcharging due to sudden load increases or improper charging management, leading to overload. This phenomenon not only accelerates the aging of components, shortens the service life of the charging and discharging module, and affects system stability, but may also cause safety accidents such as short circuits in the charging and discharging module, battery thermal runaway, and electrical burnout in severe cases.

[0004] Therefore, overload protection devices for electric vehicle charging and discharging modules are particularly needed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of charging and discharging modules that are prone to overload when the load suddenly increases or the charging management is not done properly, which affects their service life and safety, this utility model provides an overload protection device for electric vehicle charging and discharging modules.

[0006] This utility model is achieved through the following technical means: an overload protection device for an electric vehicle charging and discharging module, comprising a charging and discharging module body and a charging and discharging port. The charging and discharging port is provided on one side of the charging and discharging module body. It also includes a support shell, a temperature detector, a detection rod, a control panel, a support frame, a radiator, a push plate, an electric push rod, a connecting plate, and a leakage detection plate. The support shell is installed on the top of the charging and discharging module body. The temperature detector is installed on the top of the support shell. The detection rod provided at its bottom extends into the interior of the support shell. The control panel is installed on the upper part of the support shell. Multiple support frames are installed on both sides of the charging and discharging module body at equal intervals. Each support frame is equipped with a radiator. The electric push rod is installed on the upper side of the charging and discharging module body. Its piston rod extends horizontally forward and is equipped with a connecting plate. The connecting plate passes through the support shell and slides with it. A U-shaped push plate is fixedly connected to the vertical section of the connecting plate. One surface of the push plate is flush with the surface of the charging and discharging port. A leakage detection plate is installed on the inner surface of the push plate facing the charging and discharging port. The charging and discharging module body, the temperature detector, the radiator, the electric push rod, and the leakage detection plate are all electrically connected to the control panel.

[0007] Furthermore, it also includes filters, with one filter fixed to each radiator.

[0008] Furthermore, the support shell is made of high-strength materials.

[0009] Furthermore, the bottom of the detection rod directly contacts the surface of the charging and discharging module body.

[0010] Furthermore, the bottom surface of the horizontal section of the connecting plate is attached to the top surface of the charging and discharging module body to form a sliding guide structure.

[0011] Furthermore, the leakage detection board also has a square-shaped structure, arranged around the edge of the charging and discharging port.

[0012] Beneficial effects: By working together with the temperature detector, detection rod, control panel and heat sink, forced cooling is automatically activated when the temperature of the charging and discharging module exceeds the limit to prevent overheating damage. At the same time, when the charging and discharging module is fully charged or the leakage detection board detects an insulation abnormality, the external device plug is automatically pushed out to achieve physical power off, effectively avoiding the risks of overcharging, electric shock, short circuit and electrical burnout, and improving system stability and safety. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the charging / discharging port, support shell, and temperature detector of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the support frame, radiator, and filter components of this utility model.

[0016] Figure 4 This is a partial cross-sectional view of the support shell component of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the push plate, electric push rod, and connecting plate of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the components of this utility model, including the electric push rod, connecting plate, and leakage detection plate.

[0019] Reference numerals: 1. Charge / discharge module body; 2. Charge / discharge port; 3. Support shell; 4. Temperature detector; 5. Detection rod; 6. Control panel; 7. Support frame; 8. Heat sink; 9. Filter screen; 10. Push plate; 11. Electric push rod; 12. Connecting plate; 13. Leakage detection board. Detailed Implementation

[0020] Example: Overload protection device for electric vehicle charging and discharging module, such as Figures 1-6As shown, the system includes a charging / discharging module body 1 and a charging / discharging port 2. The charging / discharging port 2 is located on the front side of the charging / discharging module body 1. It also includes a support shell 3, a temperature detector 4, a detection rod 5, a control panel 6, a support frame 7, a heat sink 8, a filter 9, a push plate 10, an electric push rod 11, a connecting plate 12, and a leakage detection plate 13. The support shell 3 is bolted to the top of the charging / discharging module body 1 and is made of high-strength materials, such as aluminum alloy, stainless steel, or reinforced engineering plastics. The temperature detector 4 is bolted to the top of the support shell 3, and its bottom detection rod 5 extends into the support shell 3, with the bottom end of the detection rod 5 directly contacting the surface of the charging / discharging module body 1 to detect the temperature of the charging / discharging module body 1 in real time. The control panel 6 is bolted to the upper part of the support shell 3. Three equally spaced support frames 7 are bolted to both sides of the charging / discharging module body 1. Each support frame 7 is bolted with a heat sink 8, and each heat sink 8 is fixedly connected with a filter 9 to block external dust. Dust and particulate matter enter the heat dissipation air duct to prevent dust accumulation on the fins of the radiator 8, which would reduce heat dissipation efficiency. The electric push rod 11 is bolted to the upper front side of the charging and discharging module body 1. Its piston rod extends horizontally forward and is bolted to an L-shaped connecting plate 12. The connecting plate 12 passes through the support shell 3 and slides with it. The bottom surface of the horizontal section of the connecting plate 12 is attached to the top surface of the charging and discharging module body 1, forming a sliding guide structure to improve the movement stability of the connecting plate 12. The vertical section of the connecting plate 12 is fixedly connected to a U-shaped push plate 10. The front surface of the push plate 10 is flush with the front surface of the charging and discharging port 2. The inner surface of the push plate 10 facing the charging and discharging port 2 is bolted to a leakage detection plate 13. The leakage detection plate 13 is also U-shaped and is arranged around the edge of the charging and discharging port 2, which can fully cover the insertion area and realize all-round leakage detection around the charging and discharging port 2. The charging and discharging module body 1, temperature detector 4, radiator 8, electric push rod 11 and leakage detection plate 13 are all electrically connected to the control panel 6.

[0021] During normal operation of the charging and discharging module, the temperature detector 4 collects the working temperature of the charging and discharging module body 1 in real time through the detection rod 5 extending from its bottom. The temperature signal is transmitted to the control panel 6 for processing in real time. When the detected temperature exceeds the preset safety threshold (such as 70℃), the control panel 6 automatically starts the heat sink 8 to enhance air convection and quickly reduce the temperature of the charging and discharging module body 1 to prevent overheating risk.

[0022] When the charging and discharging module body 1 is fully charged, its internal battery management system sends a full charge signal to the control panel 6. After receiving the signal, the control panel 6 immediately issues a control command to drive the electric push rod 11 to move. The piston rod of the electric push rod 11 pushes forward horizontally, causing the connecting plate 12 to move forward synchronously with the push plate 10. During the forward movement of the push plate 10, its front end contacts the plug of the inserted external device and pushes it out smoothly from the charging and discharging port 2, realizing the physical disconnection of the power supply, completely cutting off the current path, and avoiding the risk of overcharging.

[0023] In addition, the leakage detection board 13 monitors the leakage status of the plug-in area in all directions. Once an insulation abnormality or moisture conductivity is detected, the control panel 6 will also issue a control command to push the external device plug out of the charging and discharging port 2 to avoid the risk of electric shock, short circuit and electrical burnout.

Claims

1. An overload protection device for an electric vehicle charging and discharging module, comprising a charging and discharging module body (1) and a charging and discharging port (2), wherein the charging and discharging module body (1) is provided with a charging and discharging port (2) on one side, characterized in that, It also includes a support shell (3), a temperature detector (4), a detection rod (5), a control panel (6), a support frame (7), a heat sink (8), a push plate (10), an electric push rod (11), a connecting plate (12), and a leakage detection plate (13). The support shell (3) is installed on the top of the charging and discharging module body (1). The temperature detector (4) is installed on the top of the support shell (3), and the detection rod (5) at its bottom extends into the support shell (3). The control panel (6) is installed on the upper part of the support shell (3). Multiple support frames (7) are evenly distributed on both sides of the charging and discharging module body (1). Each support frame (7) is equipped with a heat sink. 8) The electric push rod (11) is installed on the upper side of the charging and discharging module body (1). Its piston rod extends horizontally forward and is equipped with a connecting plate (12). The connecting plate (12) passes through the support shell (3) and slides with it. The vertical section of the connecting plate (12) is fixed with a U-shaped push plate (10). One side surface of the push plate (10) is flush with one side surface of the charging and discharging port (2). The inner surface of the push plate (10) facing the charging and discharging port (2) is equipped with a leakage detection plate (13). The charging and discharging module body (1), temperature detector (4), heat sink (8), electric push rod (11) and leakage detection plate (13) are all electrically connected to the control panel (6).

2. The overload protection device for electric vehicle charging and discharging module according to claim 1, characterized in that, It also includes a filter (9), with one filter (9) fixed to each radiator (8).

3. The overload protection device for electric vehicle charging and discharging module according to claim 2, wherein The support shell (3) is made of high-strength material.

4. The overload protection device for electric vehicle charging and discharging module according to claim 3, wherein The bottom end of the detection rod (5) directly contacts the surface of the charging and discharging module body (1).

5. The overload protection device for electric vehicle charging and discharging module according to claim 4, wherein, The bottom surface of the horizontal section of the connecting plate (12) is attached to the top surface of the charging and discharging module body (1) to form a sliding guide structure.

6. The overload protection device for electric vehicle charging and discharging module according to claim 5, wherein The leakage detection board (13) also has a square-shaped structure and is arranged around the edge of the charging and discharging port (2).

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