One-key starting circuit for realizing cascade control of multi-battery pack system

Abstract

The utility model discloses a one-key starting circuit for realizing cascade control of a multi-battery pack system, which is arranged on a power supply circuit of each battery pack and comprises a key switch and a trigger circuit which are sequentially connected, and the trigger circuit comprises a first optocoupler, a second optocoupler, a third optocoupler and a main controller for realizing cascade control of the multi-battery pack. A plurality of battery packs are cascaded through a key switch, a signal end of a key switch button is respectively connected with a first pin and a second pin of a first optocoupler and a second optocoupler, a signal fourth pin of the first optocoupler is connected with an internal power supply through a resistor R5, and a third pin and a fourth pin of the second optocoupler are respectively connected with an enabling end of a main controller. The enabling end of the main controller is further connected with the third pin and the fourth pin of the third optocoupler, and the first pin of the third optocoupler is connected with the latch output end of the main controller. According to the method, battery pack system cascading between adjacent devices is achieved through the signal interface of the key switch, the trigger state of the key switch is obtained by arranging the first optocoupler, the second optocoupler, the third optocoupler and the main controller, and the state is latched.

Description

Technical Field

[0001] The utility model relates to a control system and method for a multi-battery pack system, and in particular to a one-button starting circuit for realizing cascade control of the multi-battery pack system. Background Art

[0002] In order to increase the energy of the energy storage system, people usually use multiple battery packs in cascade. However, when starting a multi-battery pack cascade system, it is often necessary to manually operate the key switches of each component one by one, which is a cumbersome and time-consuming process. In real life, since the various line key switches of the system may be distributed in different positions, especially when there are a large number of battery packs, if the key switches cannot be clearly distinguished, operational errors may occur. In addition, manual operation of the key switch poses a risk of electric shock, and requires a lot of time and manpower, and there is also the possibility of startup failure. Therefore, people are in urgent need of a new solution for realizing one-button startup of a multi-battery pack cascade system. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a one-button starting circuit for realizing cascade control of a multi-battery pack system, which is reasonably designed, easy to use, and greatly improves the starting efficiency and reliability of the system, in view of the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A one-button start circuit for realizing cascade control of multiple battery pack systems, characterized in that it is arranged on the power supply circuit of each battery pack system, the circuit includes a key switch and a trigger circuit connected in sequence, the trigger circuit includes a first optical coupler for judging the state of the key switch, a second optical coupler for enabling the battery pack, a third optical coupler for providing a power supply latch signal, and a main controller for realizing cascade control of multiple battery packs, multiple battery pack systems are cascaded through the key switch, the signal input end and the signal output end of the key switch button are respectively connected to the 1st and 2nd pins of the first optical coupler and the second optical coupler, the 3rd pin of the first optical coupler is grounded, the 4th pin of the first optical coupler signal is connected to the internal power supply through a resistor R5, the 4th pin of the first optical coupler signal is also connected to the state input end of the main controller through a resistor R6, the 3rd and 4th pins of the second optical coupler are respectively connected to the enable output end and the enable input end of the main controller, the enable output end and the enable input end of the main controller are also connected to the 3rd and 4th pins of the third optical coupler, the 1st pin of the third optical coupler is connected to the latch output end of the main controller, and the 2nd pin of the third optical coupler is grounded.

[0006] The technical problem to be solved by the present invention can also be achieved through the following technical solution: a resistor R7 is connected between pin 1 of the third optical coupler and the main controller.

[0007] The technical problem to be solved by the present invention can also be achieved through the following technical solution: a resistor R1 and a resistor R2 arranged in parallel are connected to the input end of the key switch.

[0008] The technical problem to be solved by the utility model can also be achieved through the following technical scheme. Protective components for protecting the circuit and preventing reverse connection are provided at the electrical input end of the push switch, between the 2nd pin of the first optocoupler and the push switch, and between the 2nd pin of the second optocoupler and the push switch. The main function of the protective components is to protect the circuit, prevent reverse connection, and protect related devices, such as the first optocoupler and the second optocoupler. However, the related protection circuit method is not limited to a diode, and can also be a fuse of a parallel diode, a full-bridge rectifier anti-reverse circuit, or a low internal resistance MOSFET with reverse connection.

[0009] Compared with the prior art, the utility model adds a push button switch, and adjacent devices are cascaded through the signal interface of the push button switch, so that multiple battery packs are cascaded to form a system; by providing a first optocoupler and a main controller, the trigger state of the push button switch is obtained, logical judgment is made according to the triggering duration, and a power-on or power-off operation is performed, so that all devices can perform the same power-on or power-off operation; by providing a second optocoupler and a main controller, it is convenient to provide an enable signal to the system to ensure the normal power supply of each device; by providing a third optocoupler, it is convenient to provide a power supply latch signal to the main controller to ensure the consistency of the system signal; by adding diodes and current-limiting resistors to the push button circuit, the input circuit of the first optocoupler, the input circuit of the second optocoupler and the input circuit of the third optocoupler, related devices are protected; by adding a current-limiting resistor to the output circuit of the second optocoupler, the status input port of the main controller is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of the one-button start circuit of the utility model;

[0011] Figure 2 A circuit diagram of the one-button start circuit of the utility model;

[0012] Figure 3 This is a schematic diagram of the one-button start method of the utility model;

[0013] In the figure:

[0014] 1-button switch, 2-second optocoupler, 3-first optocoupler, 4-third optocoupler, 5-main controller. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] Reference Figure 1-3 A one-key start circuit for realizing cascade control of multiple battery pack systems is provided on the power supply circuit of each battery pack system. The circuit comprises a key switch 1 and a trigger circuit connected in sequence. The trigger circuit comprises a first optical coupler 3 for judging the state of the key switch, a second optical coupler 2 for enabling the battery pack, a third optical coupler 4 for providing a power supply latch signal, and a main controller 5 for realizing cascade control of multiple battery packs. Multiple battery pack systems are cascaded through the key switch 1. The signal input end and the signal output end of the key switch button are respectively connected to the 1st and 2nd pins of the first optical coupler and the second optical coupler. The 3rd pin of the first optical coupler is grounded. The 4th pin of the first optical coupler signal is connected to the internal power supply through a resistor R5. The 4th pin of the first optical coupler signal is also connected to the state input end of the main controller through a resistor R6. The 3rd and 4th pins of the second optical coupler are respectively connected to the enable output end and the enable input end of the main controller. The enable output end and the enable input end of the main controller are also connected to the 3rd and 4th pins of the third optical coupler. The 1st pin of the third optical coupler is connected to the latch output end of the main controller. The 2nd pin of the third optical coupler is grounded.

[0017] A resistor R7 is connected between the pin 1 of the third optical coupler and the main controller 5.

[0018] A resistor R1 and a resistor R2 are connected in parallel to the input end of the key switch;

[0019] A protection component for protecting the circuit and preventing reverse connection is provided between the electrical input end of the key switch, between the 2nd foot of the first optical coupler and the key switch, and between the 2nd foot of the second optical coupler and the key switch. The protection component is a diode, a fuse of a parallel diode, a full-bridge rectifier anti-reverse circuit, or a low internal resistance MOSFET for reverse connection. In addition, the utility model provides resistors R1-R7 to play a current limiting role and realize the protection of the optical coupler.

[0020] The method for realizing a one-button start circuit for cascade control of a multi-battery pack system according to the utility model is as follows:

[0021] When controlling the operation of a single device, the user controls the power supply of the device through the key switch. When the key switch is closed or disconnected, a corresponding power-on or power-off signal is generated. The power-on or power-off signal is transmitted to the first optical coupler, so that its output end is turned on and then grounded, so that the main controller port changes from a high level to a low level. The main controller determines whether the state of the key switch is closed or disconnected, and at the same time, turns on the output end of the second optical coupler to enable the battery pack system, so that the battery pack system can be powered normally;

[0022] When controlling the operation of multiple devices, the key switches are cascaded through cables. When the key switches are closed, the power-on signal is directly transmitted to the first optocouplers of the remaining battery packs through the cables. The main controller then obtains the status of the key switches and enables power supply to the battery pack system. Therefore, the main controllers of all devices uniformly obtain the status of the key switches and perform corresponding actions.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A one-button start circuit for realizing cascade control of a multi-battery pack system, characterized in that: It is arranged on the power supply circuit of each battery pack system, and the circuit includes a key switch and a trigger circuit connected in sequence. The trigger circuit includes a first optocoupler for judging the state of the key switch, a second optocoupler for enabling the battery pack, a third optocoupler for providing a power supply latch signal, and a main controller for realizing cascade control of multiple battery packs. Multiple battery pack systems are cascaded through the key switch. The signal input end and the signal output end of the key switch button are respectively connected to pins 1 and 2 of the first optocoupler and the second optocoupler, and pin 3 of the first optocoupler is grounded. Pin 4 of the first optocoupler signal is connected to the internal power supply through resistor R5, and pin 4 of the first optocoupler signal is also connected to the state input end of the main controller through resistor R6, and pins 3 and 4 of the second optocoupler are respectively connected to the enable output end and the enable input end of the main controller, and the enable output end and the enable input end of the main controller are also connected to pins 3 and 4 of the third optocoupler, and pin 1 of the third optocoupler is connected to the latch output end of the main controller, and pin 2 of the third optocoupler is grounded.

2. A one-button start circuit for realizing cascade control of a multi-battery pack system according to claim 1, characterized in that: A resistor R7 is connected between pin 1 of the third optical coupler and the main controller.

3. A one-button start circuit for realizing cascade control of a multi-battery pack system according to claim 1, characterized in that: The input end of the key switch is connected to a resistor R1 and a resistor R2 which are arranged in parallel.

4. A one-button start circuit for realizing cascade control of a multi-battery pack system according to claim 1, characterized in that: Protective components for protecting the circuit and preventing reverse connection are provided at the electrical input end of the key switch, between the second pin of the first optical coupler and the key switch, and between the second pin of the second optical coupler and the key switch.

5. A one-button start circuit for realizing cascade control of a multi-battery pack system according to claim 4, characterized in that: The protection element is a diode, a fuse of a parallel diode, a full-bridge rectifier anti-reverse circuit or a low internal resistance MOSFET reverse connection.

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