Insulation detection device
By using a low-voltage DC voltage source and a boost circuit in the insulation detection device, the specific voltage required for insulation detection is solved, and the problem of line insulation detection cannot be performed when no charge and discharge module provides high voltage is achieved, and efficient insulation detection of electric vehicles and energy storage devices is achieved.
Patent Information
- Application Number
- CN202420675713.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-03
AI Technical Summary
Before electric vehicles and energy storage devices are discharged in reverse toward the outward direction, line insulation detection cannot be performed without the charge and discharge module providing high voltage.
An insulation detection device is designed to provide the specific voltage required for insulation detection through a boost circuit using a low-voltage DC voltage source, for line insulation detection when no charge and discharge module provides high voltage.
It realizes insulation detection of the charger, energy storage equipment, and discharge equipment lines without using the charging and discharging module to provide high voltage and no external high voltage source is required.
Smart Images
Figure CN222599776U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to insulation detection technology, belonging to the field of electric vehicles and energy storage charging and discharging, and in particular to an insulation detection device. Background Art
[0002] Currently, electric vehicles and energy storage technologies are in rapid development. Before electric vehicles and energy storage devices discharge in the opposite direction, it is necessary to detect whether the circuit insulation meets the discharge requirements, and the circuit needs to be inspected for insulation. However, before discharge, the line insulation inspection cannot be performed because there is no voltage in the charging and discharging module and the high-voltage circuit. Utility Model Content
[0003] In order to solve the above-mentioned deficiencies of the prior art, the present application provides an insulation detection device, which uses a low-voltage DC voltage source to provide the voltage required for insulation detection by boosting the voltage, thereby solving the problem that the line insulation cannot be tested due to the lack of high voltage provided by the charging and discharging module.
[0004] In order to achieve the above purpose, the utility model adopts the following technologies:
[0005] An insulation detection device, used for performing insulation detection on a circuit when no charging and discharging module provides high voltage, comprises an insulation detection unit, characterized in that the device also comprises a voltage source, a processing unit, an input control unit, a voltage conversion unit, and an output control unit;
[0006] The voltage source is used to provide a low voltage DC voltage;
[0007] An input control unit, connected between the voltage source and the voltage conversion unit, and connected to the processing unit, for transmitting the low-voltage DC voltage provided by the voltage source to the voltage conversion unit or disconnecting the transmission of the low-voltage DC voltage according to a control signal of the processing unit;
[0008] A voltage conversion unit is connected between the input control unit and the output control unit and is connected to the processing unit, and is used to boost the low voltage DC voltage provided by the input control unit to a specific voltage required for insulation detection and transmit it to the output control unit according to a control signal of the processing unit;
[0009] The output control unit is connected between the voltage conversion unit and the insulation detection unit and is connected to the processing unit, and is used to transmit the specific voltage to the insulation detection unit or cut off the transmission of the specific voltage according to the control signal of the processing unit.
[0010] The beneficial effects of the utility model are:
[0011] Without using the charging and discharging module to provide high voltage and without a separate external high voltage source, the insulation detection of the charger, energy storage device and discharge device lines can be achieved by utilizing the existing low-voltage DC source to boost the voltage to a specific voltage to provide it to the insulation detection unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a circuit structure block diagram of the insulation detection device of an embodiment of the present application. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.
[0014] An insulation detection device according to an embodiment of the present application is used to perform insulation detection on the circuits of a charger, an energy storage device, and a discharge device when there is no charging or discharging module providing high voltage, such as Figure 1 As shown, it mainly includes a voltage source, a processing unit, an input control unit, a voltage conversion unit, and an output control unit. These devices / units are connected with the existing insulation detection unit to build a detection environment.
[0015] The voltage source is used to provide a low-voltage direct current voltage, and is connected to the processing unit to power the processing unit.
[0016] The input control unit is connected between the voltage source and the voltage conversion unit, and is connected to the processing unit, and is used to transmit the low-voltage DC voltage provided by the voltage source to the voltage conversion unit or disconnect the transmission of the low-voltage DC voltage according to the control signal of the processing unit; specifically, the input control unit can be implemented by a relay, by connecting the two ends of the relay to the voltage source and the voltage conversion unit respectively, and connecting the control end to the processing unit, and receiving the control signal of the processing unit to conduct or disconnect, so as to realize the transmission of the low-voltage DC voltage. Specifically, in this example, the processing unit can adopt an MCU, and the control signal output end of the MCU is connected to the control end of the relay.
[0017] The voltage conversion unit can be implemented using a boost circuit, which is specifically connected between the input control unit and the output control unit and connected to the processing unit. It is used to boost the low-voltage DC voltage provided by the input control unit to a specific voltage required for insulation detection according to a control signal of the processing unit and transmit it to the output control unit.
[0018] Similarly, the output control unit can also be implemented using a relay, which is connected between the voltage conversion unit and the insulation detection unit, and connected to the processing unit, and is used to transmit or disconnect the specific voltage to the insulation detection unit according to the control signal of the processing unit.
[0019] The processing unit is connected to the insulation detection unit. The insulation detection unit is used to perform insulation detection under the specific voltage according to the control signal of the processing unit. The processing unit is used to obtain the detection result of the insulation detection unit.
[0020] When the specific work is carried out, the input control unit decides whether to allow the low-voltage DC voltage provided by the voltage source to be transmitted to the voltage conversion unit according to the control signal of the MCU. The voltage conversion unit converts the low-voltage DC voltage into the specific voltage required for this test according to the control signal of the MCU, and then provides it to the output control unit. The output control unit decides whether to allow the specific voltage to be transmitted to the insulation detection unit according to the control signal of the MCU. When the specific voltage is transmitted to the insulation detection unit, the insulation detection unit can perform insulation detection on the circuit according to the detection control signal initiated by the MCU in this environment, and feed back the detection result to the MCU. Further, as a more specific implementation form, the MCU can be connected to the host computer through a communication module, so that the obtained detection result can be reported.
[0021] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.
Claims
1. An insulation detection device, used for performing insulation detection on a circuit when no charging and discharging module provides high voltage, comprising an insulation detection unit, characterized in that: The device also includes a voltage source, a processing unit, an input control unit, a voltage conversion unit, and an output control unit; The voltage source is used to provide a low voltage DC voltage; An input control unit, connected between the voltage source and the voltage conversion unit, and connected to the processing unit, for transmitting the low-voltage DC voltage provided by the voltage source to the voltage conversion unit or disconnecting the transmission of the low-voltage DC voltage according to a control signal of the processing unit; A voltage conversion unit is connected between the input control unit and the output control unit and is connected to the processing unit, and is used to boost the low voltage DC voltage provided by the input control unit to a specific voltage required for insulation detection and transmit it to the output control unit according to a control signal of the processing unit; The output control unit is connected between the voltage conversion unit and the insulation detection unit and is connected to the processing unit, and is used to transmit the specific voltage to the insulation detection unit or cut off the transmission of the specific voltage according to the control signal of the processing unit.
2. The insulation detection device according to claim 1, characterized in that: The voltage source is connected to the processing unit and is used to supply power to the processing unit.
3. The insulation detection device according to claim 1, characterized in that: The processing unit is connected to the insulation detection unit. The insulation detection unit is used to perform insulation detection under the specific voltage according to the control signal of the processing unit. The processing unit is used to obtain the detection result of the insulation detection unit.
4. The insulation detection device according to claim 1, characterized in that: The input control unit comprises a relay, a control end of which is connected to the processing unit.
5. The insulation detection device according to claim 1, characterized in that: The output control unit comprises a relay, a control end of which is connected to the processing unit.
6. The insulation detection device according to claim 1, characterized in that: The voltage conversion unit includes a boost circuit.
7. The insulation detection device according to claim 1, characterized in that: The processing unit includes an MCU.