Circuit for controlling energization of high-voltage BMS (Battery Management System) by adopting electric button

Abstract

The utility model provides a circuit using an inching button to control energization of a high voltage BMS, comprising a chip U1, a chip U2, a single-pole double-throw switch Q1, a relay K1 and a BMS system U4, a moving end 1 of the single-pole double-throw switch Q1 is connected with an interface B + and a port 1 of the relay K1, a fixed end 2 of the single-pole double-throw switch Q1 is connected with a port 2 of the relay K1 and a port 1 of the chip U2, and the BMS system U4 is connected with the interface B +. According to the utility model, the inching button is adopted to control the power-on circuit of the high-voltage BMS, so that the defects during high-voltage power-on can be avoided, the voltage endurance capability of the whole system can be improved through the selection of the DC module type selection, and the compatibility is stronger.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage power-on, in particular to a circuit for controlling the power-on of a high-voltage BMS by using an electric button. Background Art

[0002] At present, most high-voltage BMS use direct power-on, which has many disadvantages and does not support power off. Direct power-on can cause sparks, aging of connectors or even adhesion, and loss of detachability. In the case of high voltage of the overall system, it does not support frequent power on and off.

[0003] The existing conventional power-on method is mostly manual connection, which reduces the life of the connection device and may cause melting and adhesion during contact, making it impossible to disconnect. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application solve the problems in the prior art by providing a circuit that uses an electric button to control the power supply of a high-voltage BMS.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A circuit for controlling the power on of a high-voltage BMS by using an electric button, comprising a chip U1, a chip U2, a single-pole double-throw switch Q1, a relay K1 and a BMS system U4, wherein a moving end 1 of the single-pole double-throw switch Q1 is connected to an interface B+ and a port 1 of the relay K1, a fixed end 2 of the single-pole double-throw switch Q1 is connected to a port 2 of the relay K1 and a port 1 of the chip U2, port 2 of the chip U2 is grounded, port 3 of the chip U2 is connected to a port 3 of the relay K1 and a port 1 of the BMS system U4, a fixed end 3 of the single-pole double-throw switch Q1 is connected to a port 1 of the chip U1, a port 2 of the chip U1 is connected to an interface B-, and a port 4 of the relay K1 is connected to a port 4 of the BMS system U4.

[0007] As a further technical solution of the present invention: the chip U1 is an optical coupler.

[0008] As a further technical solution of the present invention: the chip U2 is a DC-DC conversion chip.

[0009] As a further technical solution of the utility model: the relay K1 is a single-contact relay.

[0010] As a further technical solution of the utility model: the single-pole double-throw switch Q1 is an electric switch.

[0011] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0012] The utility model adopts a circuit that uses a jog button to control the power-on of the high-voltage BMS, which not only avoids the disadvantages of high-voltage power-on, but also improves the voltage resistance of the overall system through the selection of DC module types, and has stronger compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Reference Figure 1 A circuit for controlling the power on of a high-voltage BMS by using an electric button includes a chip U1, a chip U2, a single-pole double-throw switch Q1, a relay K1 and a BMS system U4, wherein a moving end 1 of the single-pole double-throw switch Q1 is connected to an interface B+ and a port 1 of the relay K1, a fixed end 2 of the single-pole double-throw switch Q1 is connected to a port 2 of the relay K1 and a port 1 of the chip U2, a port 2 of the chip U2 is grounded, a port 3 of the chip U2 is connected to a port 3 of the relay K1 and a port 1 of the BMS system U4, a fixed end 3 of the single-pole double-throw switch Q1 is connected to a port 1 of the chip U1, a port 2 of the chip U1 is connected to an interface B-, and a port 4 of the relay K1 is connected to a port 4 of the BMS system U4.

[0016] Chip U1 is an optical coupler. Chip U2 is a DC-DC conversion chip. Relay K1 is a single-contact relay. Single-pole double-throw switch Q1 is an electric switch.

[0017] Here’s how it works:

[0018] The device is mainly composed of an electric switch Q1, a relay K1, a DC-DC module U2, a BMS system U4, and an isolation optocoupler U1. Under normal circumstances, the inching switch Q1 is connected to the normally closed pin 3. At this time, the optocoupler transmits a signal to the BMS, and the auxiliary circuit is controlled by the BMS. When the switch Q1 is manually connected to the normally closed pin 2, the relay is energized, the DCDC obtains power, and the normal voltage is transferred to the BMS for power supply, and the BMS is active. When active shutdown is required, the BMS saves the information and IO1 controls the relay to disconnect.

[0019] This device not only avoids the disadvantages of high voltage power-on, but also improves the voltage resistance of the overall system through the selection of DC modules, and has stronger compatibility.

[0020] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0021] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. A circuit for controlling the power on of a high-voltage BMS by an electric button, comprising a chip U1, a chip U2, a single-pole double-throw switch Q1, a relay K1 and a BMS system U4, characterized in that: The moving end 1 of the single-pole double-throw switch Q1 is connected to the interface B+ and the port 1 of the relay K1, the fixed end 2 of the single-pole double-throw switch Q1 is connected to the port 2 of the relay K1 and the port 1 of the chip U2, the port 2 of the chip U2 is grounded, the port 3 of the chip U2 is connected to the port 3 of the relay K1 and the port 1 of the BMS system U4, the fixed end 3 of the single-pole double-throw switch Q1 is connected to the port 1 of the chip U1, the port 2 of the chip U1 is connected to the interface B-, and the port 4 of the relay K1 is connected to the port 4 of the BMS system U4.

2. A circuit for controlling the power on of a high-voltage BMS using an electric button according to claim 1, characterized in that: The chip U1 is an optical coupler.

3. A circuit for controlling the power on of a high-voltage BMS using an electric button according to claim 1, characterized in that: The chip U2 is a DC-DC conversion chip.

4. A circuit for controlling the power on of a high-voltage BMS using an electric button according to claim 1, characterized in that: The relay K1 is a single-contact relay.

5. The circuit for controlling the power on of a high-voltage BMS using an electric button according to claim 1, characterized in that: The single-pole double-throw switch Q1 is an electric switch.

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