A circuit to increase a 72v power enable signal

Abstract

The utility model discloses a kind of circuit of 72V power supply enable signal, including main control circuit, main control circuit includes DC power supply, relay and fuse, DC power supply is externally connected in the 72V+ and 72V- circuit of high-voltage pre-check battery, relay KA0 is installed on 72V+ end circuit, the coil of relay KA0 is connected in the 72V- and ACC end of TB X1 terminal, the contact of relay KA0 is connected in switching power supply PS1, DC power supply PS1 output end installs fuse FU1 and fuse FU2.The utility model under the condition of not changing original power supply, by increasing relay, by the enable signal of 72V high-voltage pre-check battery triggers relay to be powered to give DC power supply, finally reaches the purpose of normal power supply.

Description

Technical Field

[0001] This utility model relates to a circuit, specifically a circuit that adds a 72V power supply enable signal. Background Technology

[0002] In the current operating system of automated equipment, the DC power supply is a key power supply component, but its design has a functional shortcoming—the lack of an enable signal interface. This deficiency causes significant operational problems when the equipment is powered by a 72V high-voltage pre-detection battery.

[0003] Specifically, when the 72V high-voltage pre-detection battery supplies power to the DC power supply, the high-voltage detection system of the equipment cannot recognize the validity of this power supply state because the DC power supply lacks a trigger and feedback mechanism for the enable signal. According to the preset logic, the system will determine this "no enable signal response" situation as a failure of the high-voltage pre-charge process. Once this determination is triggered, the equipment will activate the protection mechanism, directly restricting the normal output and operation of the DC power supply. Ultimately, this will cause the DC power supply to be unable to provide stable power support to the automated equipment according to the preset program, thereby affecting the normal operation of the entire equipment system. Utility Model Content

[0004] To address the technical problem of high-voltage pre-charge failure caused by the lack of an enable signal in the DC power supply, this invention provides a circuit that adds a 72V power enable signal, achieving normal power supply without altering the original power supply.

[0005] This utility model provides the following technical solution:

[0006] A circuit for adding a 72V power enable signal includes a main control circuit, which includes a DC power supply, a relay, and a fuse. The DC power supply is externally connected to the 72V+ and 72V- circuits of a high-voltage pre-detection battery. A relay KA0 is installed on the 72V+ terminal circuit. The coil of the relay KA0 is connected to the 72V- and ACC terminals of the TB X1 terminal. The contacts of the relay KA0 are connected to the switching power supply PS1. Fuses FU1 and FU2 are installed at the output terminal of the DC power supply PS1.

[0007] Furthermore, the DC power supply PS1 is model RSD-300F-24V.

[0008] Furthermore, the relay KA0 has the model number JD-2912-84VDC.

[0009] Furthermore, the output of the DC power supply PS1 is connected to the TB X2 terminal, and the output of the TB X2 terminal supplies power to the next circuit.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the circuit of this utility model for adding a 72V power enable signal includes a main control circuit, which includes a DC power supply, a relay and a fuse. Without changing the original power supply, by adding a relay, the relay is energized and energized by the enable signal of the 72V high-voltage pre-detection battery to supply power to the DC power supply, and finally achieve the purpose of normal power supply. Attached Figure Description

[0011] Figure 1 This is the circuit schematic diagram of this utility model;

[0012] Figure 2 This is the wiring diagram for the TB X1 terminal of this utility model;

[0013] Figure 3 This is the wiring diagram for the TB X2 terminal of this utility model. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-3 This utility model discloses a circuit for adding a 72V power enable signal, including a main control circuit. The main control circuit includes a DC power supply, a relay, and a fuse. The DC power supply is externally connected to the 72V+ and 72V- circuits of a high-voltage pre-detection battery. A relay KA0 is installed on the 72V+ terminal circuit. The coil of the relay KA0 is connected to the 72V- and ACC terminals of the TB X1 terminal. The contacts of the relay KA0 are connected to the switching power supply PS1. Fuses FU1 and FU2 are installed at the output terminal of the DC power supply PS1.

[0016] The DC power supply PS1 is model RSD-300F-24V.

[0017] The model number of the relay KA0 is JD-2912-84VDC.

[0018] The output of DC power supply PS1 is connected to terminal TB X2, and the output of terminal TB X2 supplies power to the next circuit.

[0019] High-voltage pre-inspection batteries are mainly used for safety testing of power equipment.

[0020] The wire diameter for connecting the coil of relay KA0 to the 72V- and ACC terminals is 1.5 square millimeters.

[0021] The input wire diameter of the DC power supply PS1 is 2.5 square millimeters, and the output wire diameter is 1.5 square millimeters.

[0022] When a DC power supply is powered by a 72V high-voltage pre-detection battery, the DC power supply itself lacks an enable signal and cannot function properly. Now, a relay is added to the circuit. The enable signal from the 72V high-voltage pre-detection battery triggers the relay to energize and engage, thus supplying power to the DC power supply and enabling it to operate normally.

[0023] like Figure 1 As shown: The external 72V high-voltage pre-check battery is powered. When 72V- and ACC are energized, the relay coil KA0 is activated, and the normally open contact of the relay KA0 is closed, thereby conducting the DC power supply PS1 to achieve 24V power supply.

[0024] In this scenario, the relay's activation delay avoids the 72V high-voltage pre-detection time, allowing the power supply to operate normally and replacing the lack of an enable signal function in the DC power supply itself.

[0025] This utility model circuit, without changing the original power supply, adds a relay. The relay is energized and activated by the enable signal of the 72V high-voltage pre-detection battery to supply DC power, ultimately achieving the purpose of normal power supply.

[0026] 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 circuit for adding a 72V power enable signal, comprising a main control circuit, characterized in that: The main control circuit includes a DC power supply, relays, and fuses. The DC power supply is externally connected to the 72V+ and 72V- circuits of the high-voltage pre-detection battery. A relay KA0 is installed on the 72V+ terminal circuit. The coil of the relay KA0 is connected to the 72V- and ACC terminals of the TB X1 terminal. The contacts of the relay KA0 are connected to the switching power supply PS1. Fuse FU1 and fuse FU2 are installed at the output terminal of the DC power supply PS1.

2. The circuit for adding a 72V power supply enable signal according to claim 1, characterized in that: The DC power supply PS1 is model RSD-300F-24V.

3. The circuit for adding a 72V power supply enable signal according to claim 1, characterized in that: The relay KA0 is model JD-2912-84VDC.

4. The circuit for adding a 72V power enable signal according to claim 1, characterized in that: The output of the DC power supply PS1 is connected to the TB X2 terminal, and the output of the TB X2 terminal supplies power to the next circuit.

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