Self-powered loop system of battery system

Abstract

The utility model discloses a self-powered loop system of a battery system. The self-powered loop system comprises a PACK battery module, a control box and a load dual-power automatic switching controller, the PACK battery module is connected to the control box through a cable, and the control box is connected to a PCS end through a pre-charging loop in a grid-connected mode. The shunt end of the control box is connected to a key reset switch through an anti-reverse diode to control the switching power supplies U1 and U2 to work, and the output ends Vo of the switching power supplies U1 and U2 are connected to the common power supply end of the load dual-power-supply automatic switching controller; the output side of the control box QF1 is connected to the control box QF2 and then is connected to the switching power supply U1 and the switching power supply U2 through an anti-reverse diode; the mains supply is connected to the switching power supply U3, and the output end Vo of the switching power supply U3 is connected to the standby power supply end of the load dual-power-supply automatic switching controller. The device is high in reliability, and can be quickly switched to the standby power supply when the main power supply fails, thereby ensuring that the power supply is not interrupted; automation and automatic switching are achieved, manual operation is reduced, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery circuit technical field especially relates to a battery system self -power loop system. BACKGROUND

[0002] Energy storage battery is a kind of equipment that can convert electric energy into chemical energy and store up, release the energy stored as electric energy when needed ； It plays a key role in the energy storage field, mainly used to balance the difference between power supply and demand, improve the stability and reliability of power grid and store renewable energy such as solar energy and wind energy. The existing energy storage battery adopts double power supply, and has the following shortcomings: poor stability, long switching time. SUMMARY

[0003] The utility model discloses a battery system self -power loop system to solve the above technical problem.

[0004] To achieve the above object the utility model adopts the following technical scheme:

[0005] A battery system self -power loop system, including multiple PACK battery modules, control box, switching power supply and load double power supply automatic switching controller;Multiple PACK battery modules are connected to control box through cable, and control box is connected to PCS end through pre-charging loop;Control box shunt end passes through anti-reverse diode and is accessed to button reset switch, controls switching power supply U1 and switching power supply U2 work, and switching power supply U1 and switching power supply U2 output end Vo are connected to the normal power supply end of load double power supply automatic switching controller;Control box QF1 output side is connected to control box QF2, and then is connected to switching power supply U1 and switching power supply U2 through anti-reverse diode;Mains access switching power supply U3, and switching power supply U3 output end Vo is connected to the standby power supply end of load double power supply automatic switching controller.

[0006] Compared with prior art, the utility model has the following advantages: the utility model high reliability, can be switched to standby power supply when main power supply fails, guarantees uninterrupted power supply;Automation, automatic switching, reduces manual operation, improves efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the battery system self -power loop system figure of the utility model.

[0008] Figure 2 It is the main power supply work flow chart of the utility model.

[0009] Figure 3 It is the standby power supply work flow chart of the utility model.

[0010] Figure 4The control logic relationship diagram of the utility model. DETAILED DESCRIPTION

[0011] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0012] As Figures 1-4 The utility model discloses a battery system self -power loop system, including multiple PACK battery module, control box, switching power supply and load dual power automatic switching controller, multiple PACK battery module is connected to control box through cable, and control box is connected to PCS end through pre -charge loop and is connected to the grid, and the control box shunt ware end is accessed through the anti -reverse diode button reset switch, and control switching power supply U1 and control switching power supply U2 work, and switching power supply U1 and switching power supply U2 output end Vo are connected to the normal power end of load dual power automatic switching controller, and control box QF1 output side is connected to control box QF2, and then is connected to switching power supply U1 and switching power supply U2 through the anti -reverse diode, and commercial power is accessed switching power supply U3, and switching power supply U3 output end Vo is connected to the standby power end of load dual power automatic switching controller. Load dual power automatic switching controller adopts self -throwing self -recovery work mode, and 24V load end can realize uninterrupted power supply, and in the failure of commercial power or battery one end, 24V load can be self -starting, and stable realization uninterrupted power supply. The system working principle: 24V load is powered by main power supply, and the standby power supply commercial power has no input:

[0013] 1) QF1 switch is closed, keeps QF2 switch closed, and button reset switch is pressed, and U1 and U2 output end Vo output 24V, and load dual power automatic switching controller adopts self -throwing self -recovery work mode, and at this moment, main power supply U1 and U2 output end Vo are normal, and main power supply is automatically put into, and 24V load is powered by main power supply.

[0014] 2) at this moment, EMS controller is powered on and is self -checked without exception, and control BMS opens pre -charge, and after pre -charge succeeds, KM1 and KM2 contactor are closed, and at this moment, button reset switch will reset, and disconnects the circuit, and U1 and U2 input power are obtained through QF2. Load dual power automatic switching controller adopts self -throwing self -recovery work mode, and at this moment, main power supply U1 and U2 output end Vo are normal, and main power supply is automatically put into, and 24V load is powered by main power supply.

[0015] 24V load is powered by standby power supply, and standby power supply commercial power has input, and button reset switch and QF2 switch keep disconnected:

[0016] 1) QF1 switch is closed, keeps QF2 switch closed, and button reset switch is pressed, and U1 and U2 output end Vo output 24V, and load dual power automatic switching controller adopts self -throwing self -recovery work mode, and at this moment, main power supply U1 and U2 output end Vo are normal, and main power supply is automatically put into, and 24V load is powered by main power supply.

[0017] 2) At this time, the EMS controller is powered on and self-inspected without any abnormality, the BMS is controlled to start pre-charging, KM1 and KM2 contactors are closed after the pre-charging is successful, and the key reset switch is reset at this time, the U1 and U2 output ends Vo output 24V, the load dual power supply automatic switching controller adopts a self-throwing and self-resetting working mode, the main power supply U1 and U2 output ends Vo are normal at this time, the main power supply is automatically thrown in, and the 24V load is powered by the main power supply.

[0018] 24V load is powered by the main power supply, the standby power supply has an input, and the QF2 switch remains closed.

[0019] 1) The QF1 switch is closed, the QF2 switch is kept closed, the key reset switch is pressed, the U1 and U2 output ends Vo output 24V, the load dual power supply automatic switching controller adopts a self-throwing and self-resetting working mode, the main power supply U1 and U2 output ends Vo are normal at this time, the main power supply is automatically thrown in, and the 24V load is powered by the main power supply.

[0020] 2) At this time, the EMS controller is powered on and self-inspected without any abnormality, the BMS is controlled to start pre-charging, KM1 and KM2 contactors are closed after the pre-charging is successful, and the key reset switch is reset at this time, the U1 and U2 output ends Vo output 24V, the load dual power supply automatic switching controller adopts a self-throwing and self-resetting working mode, the main power supply U1 and U2 output ends Vo are normal at this time, the main power supply is automatically thrown in, and the 24V load is powered by the main power supply.

[0021] The load dual power supply automatic switching controller working principle:

[0022] When the main power supply is normal and has power, the main power supply is automatically thrown in, and the standby power supply is in a standby state; when the main power supply fails or loses power, the standby power supply is automatically thrown in; if the main power supply recovers to normal, the standby power supply is automatically disabled, and the main power supply is switched to power supply again.

[0023] When the main power supply U1 and U2 output ends Vo are normal: the main power supply is automatically thrown in, and the standby power supply U3 output end Vo is in a standby state.

[0024] When the main power supply U1 and U2 output ends Vo are faulty: the control device makes the main power supply circuit breaker open, the standby power supply circuit breaker close, and the standby power supply U3 output end Vo supply power.

[0025] When the main power supply U1 and U2 output ends Vo recover: the control device makes the standby power supply circuit breaker open, the main power supply circuit breaker close, and the main power supply U1 and U2 output ends Vo supply power.

[0026] The above is a preferred embodiment of the utility model, and for ordinary skilled persons in the art, the change, modification, replacement and transformation of the embodiment without departing from the principles and spirits of the utility model still fall within the protection scope of the utility model.

Claims

1. A self-powered circuit system for a battery system, characterized in that, It includes multiple battery packs, a control box, a switching power supply, and a load dual-power automatic transfer controller. The multiple battery packs are connected to the control box via cables, and the control box is connected to the PCS terminal via a pre-charge circuit. The shunt terminal of the control box is connected to a button reset switch via a reverse protection diode to control the operation of switching power supplies U1 and U2. The output terminals Vo of switching power supplies U1 and U2 are connected to the common power supply terminal of the load dual-power automatic transfer controller. The output side of control box QF1 is connected to control box QF2, and then connected to switching power supplies U1 and U2 via a reverse protection diode. The mains power is connected to switching power supply U3, and the output terminal Vo of switching power supply U3 is connected to the backup power supply terminal of the load dual-power automatic transfer controller.

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