Dual-input charger system

Abstract

The utility model provides a double-input charger system, which comprises a control module, a first power supply module and a second power supply module, the first power supply module inputs A-path three-phase alternating current, the second power supply module inputs B-path three-phase alternating current, the A-path three-phase alternating current supplies power to the control module, and the B-path three-phase alternating current supplies power to the control module. The control module is provided with a voltage detection module, a first CAN communication module and a second CAN communication module, the A-path three-phase alternating current and the B-path three-phase alternating current are input into the voltage detection module, the first CAN communication module is in communication connection with the first power supply module and the second power supply module, and the second CAN communication module is in communication connection with the lithium battery module. The relay control switch is in communication connection with the cooling fan module; according to the utility model, single-path or double-path input power supply can be selected, under the condition that the main A path is electrified and is being charged, the functions of seamless access of input from the B path and non-stop two-path common output can be realized, and the two-path output current does not suddenly change, so that the service time of the power supply can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery charging technical field especially relates to a double input charger system. BACKGROUND

[0002] In the application scheme of the lithium battery charging of the electric fork truck, the output capacity of single three-phase electric alternating plug is limited, the maximum input 60A of the original charger is far beyond the upper limit of the disclosed input current 30A of the factory, cannot satisfy the full power output of two power modules, in order to adapt to the factory circuit of this design, needs to carry out structural modification on the single input intelligent charger platform. SUMMARY

[0003] The utility model discloses a double input charger system.

[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is:

[0005] A double input charger system, characterized in that the system includes control module, first power module and second power module, the first power module input A three-phase alternating current, the second power module input B three-phase alternating current, A three-phase alternating current is controlled module power supply, the control module is equipped with voltage detection module, first CAN communication module and second CAN communication module, A three-phase alternating current and B three-phase alternating current all input voltage detection module, the first CAN communication module is connected with first power module and second power module communication respectively, the second CAN communication module is connected with lithium battery module communication,

[0006] The system further includes the heat dissipation fan module, the heat dissipation fan module is located at the input of first power module, and the control module controls the start and stop of the heat dissipation fan module, the heat dissipation fan module includes a relay, the control module includes a relay control switch, the relay control switch is connected with the heat dissipation fan module, and the relay control switch controls the opening and closing of the relay.

[0007] Further, the control module is provided with an emergency stop button, the input end of the first power module and the second power module is respectively provided with a first contactor and a second contactor, and the emergency stop button simultaneously controls the opening and closing of the first contactor and the second contactor.

[0008] Further, the beginning of the input end of the first power module and the second power module is respectively provided with an electromagnetic interference filter.

[0009] This utility model allows for the selection of a suitable power supply method according to requirements, with single or dual input power supply. It can also achieve seamless connection from input B while the main A circuit is connected to power and charging, without power interruption, and with both circuits outputting simultaneously. Furthermore, the current of the two output circuits will not change abruptly, which helps to extend the service life of the power supply. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the system structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the operation process for an example.

[0012] Figure label:

[0013] U1 Control Module, U2 First Power Supply Module, U3 Second Power Supply Module, U4 Lithium Battery Module

[0014] KM1 first contactor, KM2 second contactor, M cooling fan,

[0015] 1. Electromagnetic interference filter; 2. Voltage detection module; 3. First CAN communication module.

[0016] 4 Second CAN communication module, 5 Relay control switch, 6 Cooling fan module. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] This embodiment discloses a dual-input charger system, such as Figure 1 As shown, the system includes a control module U1, a first power supply module U2, and a second power supply module U3. The control module U1 uses an ST microcontroller as the control circuit board and is powered by a Mean Well IRM-60-12, 60W, 12V, 5A power supply. This power supply has an input range of 100-240VAC and an output of 12VDC-5A, and has AC-DC anti-interference capability.

[0019] The first power module U2 receives three-phase AC power from channel A, and the second power module U3 receives three-phase AC power from channel B. The input terminals of the first power module U2 and the second power module U3 are respectively equipped with VIP3-31A-30 electromagnetic interference filters 1 to suppress electromagnetic interference and ensure reliable signal transmission.

[0020] The three-phase alternating current of the A path supplies power to the control module U1, and the control module U1 is provided with a voltage detection module 2, a first CAN communication module 3 and a second CAN communication module 4. The three-phase alternating current of the A path and the three-phase alternating current of the B path are both input to the voltage detection module 2. The first CAN communication module 3 is in communication connection with the first power supply module U2 and the second power supply module U3 respectively. The second CAN communication module 4 is in communication connection with the lithium battery module U4.

[0021] The system further comprises a cooling fan module 6 located at the input end of the first power supply module U2. The control module U1 controls the start and stop of the cooling fan module 6. The cooling fan module 6 comprises a relay. The control module U1 comprises a relay control switch 5 in communication connection with the cooling fan module 6. The relay control switch 5 controls the opening and closing of the relay. The four-way cooling fan M in the cooling fan module 6 is powered by the three-phase alternating current. The cooling fan M continuously rotates in the charging state to dissipate heat for the entire charging machine system.

[0022] The control module U1 is provided with an emergency stop button SW. The input ends of the first power supply module U2 and the second power supply module U3 are respectively provided with a first contactor KM1 and a second contactor KM2. The first contactor KM1 and the second contactor KM2 are TeSys Giga 3p contactors. The emergency stop button SW simultaneously controls the opening and closing of the first contactor KM1 and the second contactor KM2. When the emergency stop button SW is pressed, the two-way three-phase alternating current input can be quickly cut off.

[0023] The operation flow of the double-input charging machine system of the embodiment is shown in Figure 2 and comprises the following steps:

[0024] Step 1) The three-phase alternating current of the A path and the three-phase alternating current of the B path are powered on. The A path is the main path, and the B path is the slave path.

[0025] Step 2) The START button of the control module U1 is long pressed to select the current gear. The A path can select 20A / 30A, and the B path can select 20A / 30A.

[0026] Step 3) It is judged whether the first CAN communication module 3 and the second CAN communication module 4 establish communication.

[0027] Step 4) If the communication is established, the control module U1 charges the lithium battery. If the communication is not established, the previous step 2 is returned to be repaired.

[0028] Step 5) The control module U1 is built-in charging protocol, which can judge whether the charging is completed or the charging is wrong.

[0029] With the above flow, the embodiment can realize maximum 100V / 200A DC output current, according to power supply demand, single input, output maximum 100V / 200A or two-way input, output maximum 100V / 200A can be selected.

[0030] The charging system machine of the embodiment can display various states in real time through a 4.3-inch LCD display screen, for example, A / B input current selection 20A / 30A, charging current, charging voltage, and first CAN communication module 3, second CAN communication module 4, and lithium battery module U4 fault state type. In case of emergency, the input can be immediately cut off through the emergency stop button SW to ensure safety, and warning display is performed on the LCD display screen.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A dual-input charger system, characterized by, The system comprises a control module, a first power module and a second power module, the first power module inputs A route three-phase alternating current, the second power module inputs B route three-phase alternating current, A route three-phase alternating current is used to power the control module, the control module is provided with a voltage detection module, a first CAN communication module and a second CAN communication module, A route three-phase alternating current and B route three-phase alternating current are all input into the voltage detection module, the first CAN communication module is respectively connected with the first power module and the second power module in communication, the second CAN communication module is connected with a lithium battery module in communication, The system further comprises a cooling fan module, the cooling fan module is located at the input end of the first power module, the control module controls the start and stop of the cooling fan module, the cooling fan module comprises a relay, the control module comprises a relay control switch, the relay control switch is connected with the cooling fan module in communication, and the relay control switch controls the opening and closing of the relay.

2. The dual-input charger system of claim 1, wherein, The control module is provided with an emergency stop button, the input end of the first power module and the second power module is respectively provided with a first contactor and a second contactor, and the emergency stop button simultaneously controls the opening and closing of the first contactor and the second contactor.

3. The dual-input charger system of claim 1, wherein, The beginning of the input end of the first power module and the second power module is respectively provided with an electromagnetic interference filter.

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