A new energy storage high-voltage box

Abstract

The utility model discloses a novel energy storage high pressure box, including high pressure box module, high pressure box module is equipped with port no.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage boxes, and in particular to a novel energy storage high-voltage box. Background Technology

[0002] With the development of new energy storage products, the demand for mobile off-grid energy storage products is increasing. Black start is a troublesome issue in mobile off-grid energy storage products. The solution of directly configuring UPS is cumbersome to operate and costly. The solution of directly drawing power from the battery side requires charging the energy storage battery before waking up the BMS and EMS equipment when the battery is dead.

[0003] The existing high-voltage boxes have the disadvantages of high cost and complicated operation; when the battery is dead, the energy storage battery needs to be charged first to wake up the BMS and EMS equipment.

[0004] Therefore, in order to solve the above problems, how to design a new type of high-voltage energy storage box is a technical problem that the industry urgently needs to solve. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of high-voltage energy storage box to solve the problems of high cost and complicated operation mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel energy storage high-voltage box includes a high-voltage box module. The high-voltage box module is provided with port one, port two, port three, port four, port five, port six and port seven. Port one is connected to the battery cluster, port two is connected to the EMS, port three is connected to the BMS slave controller, port four is connected to the PACK fan, ports five and six are respectively connected to external power lines, and port seven is connected to the PCS.

[0007] Preferably, the high-voltage box module includes a fuse 1, a relay KM2, a circuit breaker QF1, a shunt, and a relay KM3. The positive terminal of port one is sequentially connected to the fuse 1, relay KM2, circuit breaker QF1, and the positive terminal of port seven. The negative terminal of port one is sequentially connected to the shunt, relay KM3, circuit breaker QF1, and the negative terminal of port seven. The positive and negative terminals of port one are respectively connected to the positive and negative terminals of the battery cluster. The PCS has ports eight and nine. The positive and negative terminals of port seven are respectively connected to the positive and negative terminals of port eight. Port nine is connected to an external power line.

[0008] Preferably, the high-voltage box module is further provided with a relay KM1 and a pre-charging resistor, the fuse 1 and the relay KM2 are connected to the relay KM1, the relay KM2 and the circuit breaker QF1 are connected to the pre-charging resistor, and the relay KM1 and the pre-charging resistor are connected in series.

[0009] Preferably, the high-voltage box module is equipped with a switching power supply 1 and an automatic reclosing circuit breaker QF2. The positive terminal of port three is sequentially connected to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the positive terminal of port six. The negative terminal of port three is sequentially connected to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the negative terminal of port six. The positive and negative terminals of port three are respectively connected to the positive and negative terminals of the BMS slave controller. The positive and negative terminals of port six are respectively connected to the positive and negative terminals of the external wires.

[0010] Preferably, the high-voltage box module is further provided with a DC / DC power supply and a BMS-main controller. Port 3 is connected in parallel with the positive and negative terminals of the switching power supply 1 to port 2, the DC / DC power supply and the BMS-main controller. The positive and negative terminals of port 2 are connected to the positive and negative terminals of the EMS. The DC / DC power supply has a port 10 and a port 11. The positive and negative terminals of port 10 are respectively connected between port 3 and the positive and negative terminals of the switching power supply 1. A normally closed contact QF2 is provided between the positive terminal of port 10 and the positive terminal of port 3. The positive terminal of port 11 is connected between the positive terminal of port 1 and the fuse 1. The negative terminal of port 11 is connected between the negative terminal of port 1 and the shunt.

[0011] Preferably, the high-voltage box module is equipped with a relay KA1 and a switching power supply 2. The positive terminal of port four is connected in sequence to the relay KA1, the switching power supply 2, and the positive terminal of port five. The negative terminal of port four is connected in sequence to the negative terminal of the switching power supply 2 and the negative terminal of port five. The positive and negative terminals of port four are respectively connected to the positive and negative terminals of the PACK fan. The positive and negative terminals of port five are respectively connected to the positive and negative terminals of the external wires.

[0012] Preferably, the BMS master controller is connected to the shunt, relays KM1, KM2, and KM3, circuit breaker AF1, BMS slave controller, relay KA1, and PCS electrical signals to achieve overall control of the high-voltage box.

[0013] The beneficial effects of this utility model are: 1. When the equipment is running normally, external power lines supply power to the BMS slave controller, BMS master controller, and EMS critical equipment. When there is no AC power, the battery pack supplies power to the BMS slave controller, BMS master controller, and EMS, achieving a black start. Switching between these modes is automatic and requires no manual operation. This approach is relatively low-cost and overcomes the drawbacks of directly drawing power from the battery pack. Attached Figure Description

[0014] Figure 1 This is a system diagram of an embodiment of the present utility model. Detailed Implementation

[0015] 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.

[0016] See Figure 1 This utility model provides a novel energy storage high-voltage box, including a high-voltage box module. The high-voltage box module is provided with port one, port two, port three, port four, port five, port six and port seven. Port one is connected to the battery cluster, port two is connected to the EMS, port three is connected to the BMS slave controller, port four is connected to the PACK fan, ports five and six are respectively connected to external power lines, and port seven is connected to the PCS.

[0017] Specifically, the high-voltage box module is equipped with fuse 1, relay KM2, circuit breaker QF1, shunt and relay KM3. The positive terminal of port one is connected in sequence to fuse 1, relay KM2, circuit breaker QF1 and the positive terminal of port seven. The negative terminal of port one is connected in sequence to shunt, relay KM3, circuit breaker QF1 and the negative terminal of port seven. The positive and negative terminals of port one are respectively connected to the positive and negative terminals of the battery pack. The PCS is equipped with port eight and port nine. The positive and negative terminals of port seven are respectively connected to the positive and negative terminals of port eight. Port nine is connected to an external wire.

[0018] Among them, relay KM2 is the main positive relay, which is controlled by the BMS main control and controls the on / off state of the positive terminal in a certain battery cluster circuit.

[0019] KM3 Relay: Main negative relay, receives BMS main control, controls the on / off state of the negative terminal in a certain battery cluster circuit.

[0020] Circuit breaker QF1: It accepts the main control of BMS to control the opening and closing of a certain battery cluster circuit, and also has the ability to disconnect to protect the line.

[0021] Shunt: Diverts the current in the main circuit to facilitate current data acquisition by the BMS master controller.

[0022] Fuse 1: Protects the positive circuit to prevent circuit abnormalities caused by short circuits.

[0023] Specifically, the high-voltage box module is also equipped with a relay KM1 and a pre-charging resistor. The fuse 1 and the relay KM2 are connected to the relay KM1. The relay KM2 and the circuit breaker QF1 are connected to the pre-charging resistor. The relay KM1 and the pre-charging resistor are connected in series.

[0024] Among them, the pre-charge resistor limits surge current and stabilizes system voltage.

[0025] Relay KM1: This is a pre-charge relay, which is the switching element of the pre-charge circuit. During system startup, it closes before the main contactor (main relay), connecting the pre-charge resistor to the high-voltage circuit and limiting the initial charging current. After pre-charging is complete, the main relay closes, the pre-charge relay opens, and the system enters normal operating mode. This prevents the main relay from burning out its contacts due to arcing caused by high current when directly connected to high voltage.

[0026] Specifically, the high-voltage box module is equipped with a switching power supply 1 and an automatic reclosing circuit breaker QF2. The positive terminal of port three is connected in sequence to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the positive terminal of port six. The negative terminal of port three is connected in sequence to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the negative terminal of port six. The positive and negative terminals of port three are respectively connected to the positive and negative terminals of the BMS slave controller. The positive and negative terminals of port six are respectively connected to the positive and negative terminals of the external wires.

[0027] Among them, the automatic reclosing circuit breaker QF2: The automatic reclosing circuit breaker automatically closes when there is AC power at the input terminal. It automatically opens when there is no AC power at the input terminal. It is also equipped with a normally closed auxiliary contact to control the opening and closing of the backup power supply.

[0028] Switching power supply 1: Converts AC power to DC power to provide power to EMS and BMS (including slave and master controllers).

[0029] Specifically, the high-voltage box module also includes a DC / DC power supply and a BMS-main controller. Port 3 is connected in parallel with the positive and negative terminals of the switching power supply 1 to port 2, the DC / DC power supply, and the BMS-main controller. The positive and negative terminals of port 2 are connected to the positive and negative terminals of the EMS. The DC / DC power supply has ports 10 and 11. The positive and negative terminals of port 10 are respectively connected between port 3 and the positive and negative terminals of the switching power supply 1. A normally closed contact QF2 is provided between the positive terminal of port 10 and the positive terminal of port 3. The positive terminal of port 11 is connected between the positive terminal of port 1 and the fuse 1. The negative terminal of port 11 is connected between the negative terminal of port 1 and the shunt.

[0030] Among them, the DC-DC power supply converts high-voltage DC to low-voltage DC and serves as a black-start power supply to provide power to the EMS and BMS (including slave and master controllers).

[0031] Specifically, the high-voltage box module is equipped with a relay KA1 and a switching power supply 2. The positive terminal of port four is connected in sequence to the relay KA1, the switching power supply 2, and the positive terminal of port five. The negative terminal of port four is connected in sequence to the negative terminal of the switching power supply 2 and the negative terminal of port five. The positive and negative terminals of port four are respectively connected to the positive and negative terminals of the PACK fan. The positive and negative terminals of port five are respectively connected to the positive and negative terminals of the external wires.

[0032] Among them, switching power supply 2: converts AC power to DC power to provide power to the fan.

[0033] Specifically, the BMS master controller is connected to the shunt, relays KM1, KM2, and KM3, circuit breaker AF1, BMS slave controller, relay KA1, and PCS electrical signals to achieve overall control of the high-voltage box.

[0034] Working principle of this utility model: When in use, there are three modes: when the mobile energy storage product is charging, when the mobile energy storage product is fully charged, and when the mobile energy storage product needs to be discharged. When mobile energy storage products are charging: electrical energy flows to the switching power supply 1 through the automatic reclosing circuit breaker QF2. Figure 1 Above, you can see the line starting from the external power supply point, passing through the automatic reclosing circuit breaker QF2, and connecting to the switching power supply 1. At this point, the switching power supply 1 converts AC power to DC power to provide power to the EMS (Energy Management System) and BMS (Battery Management System, including slave and master controllers). Figure 1 The connection lines between the switching power supply 1 and EMS, BMS-slave controller, and BMS-master controller can be clearly seen. These lines are responsible for transmitting electrical energy and ensuring the normal operation of the equipment.

[0035] Mobile energy storage products fully charged: When a mobile energy storage product is fully charged and then powered off, the automatic reclosing circuit breaker QF2 detects the absence of AC power at the input terminal and automatically disconnects. Figure 1 Upon activation, the automatic reclosing circuit breaker QF2 changes from closed to open, and its normally closed auxiliary contact changes from open to closed. This change enables the DC / DC power supply side circuit to conduct, at which point the EMS and BMS-slave control, and BMS-master control are powered by the battery. Figure 1 Zhongneng observed that the path originally powered by switching power supply 1 was cut off, and instead, power was obtained from the battery cluster side through DC / DC power supply to power the EMS and BMS-slave controller and BMS-master controller, maintaining the basic operating status of the equipment.

[0036] When mobile energy storage products need to discharge: When a mobile energy storage product needs to discharge, the PCS is set to operate off-grid via EMS. At this time, the device operates off-grid, and the PCS output is energized. The automatic reclosing circuit breaker QF2 detects the energized input and automatically closes. Its auxiliary contacts change from closed to open, disconnecting the DC / DC power supply side circuit and connecting the switching power supply 1 side circuit. From Figure 1 Looking up, the automatic reclosing circuit breaker QF2 recloses, and the current path switches back to power supply 1 for the EMS and BMS-slave control and BMS-master control. Simultaneously, the PCS output connects to an external circuit to enable the energy storage product to discharge, delivering the stored energy to the external load.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel energy storage high-voltage box, comprising a high-voltage box module, characterized in that: The high-voltage box module is equipped with port 1, port 2, port 3, port 4, port 5, port 6 and port 7. Port 1 is connected to the battery cluster, port 2 is connected to the EMS, port 3 is connected to the BMS slave controller, port 4 is connected to the PACK fan, port 5 and port 6 are respectively connected to external power lines, and port 7 is connected to the PCS.

2. The novel high-voltage energy storage box according to claim 1, characterized in that: The high-voltage box module is equipped with fuse 1, relay KM2, circuit breaker QF1, shunt and relay KM3. The positive terminal of port one is connected in sequence to fuse 1, relay KM2, circuit breaker QF1 and the positive terminal of port seven. The negative terminal of port one is connected in sequence to shunt, relay KM3, circuit breaker QF1 and the negative terminal of port seven. The positive and negative terminals of port one are respectively connected to the positive and negative terminals of the battery pack. The PCS is equipped with port eight and port nine. The positive and negative terminals of port seven are respectively connected to the positive and negative terminals of port eight. Port nine is connected to an external wire.

3. The novel high-voltage energy storage box according to claim 2, characterized in that: The high-voltage box module is also equipped with a relay KM1 and a pre-charging resistor. The fuse 1 and the relay KM2 are connected to the relay KM1, and the relay KM2 and the circuit breaker QF1 are connected to the pre-charging resistor. The relay KM1 and the pre-charging resistor are connected in series.

4. The novel high-voltage energy storage box according to claim 1, characterized in that: The high-voltage box module is equipped with a switching power supply 1 and an automatic reclosing circuit breaker QF2. The positive terminal of port three is connected in sequence to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the positive terminal of port six. The negative terminal of port three is connected in sequence to the switching power supply 1, the automatic reclosing circuit breaker QF2, and the negative terminal of port six. The positive and negative terminals of port three are respectively connected to the positive and negative terminals of the BMS slave controller. The positive and negative terminals of port six are respectively connected to the positive and negative terminals of the external wires.

5. A novel high-voltage energy storage box according to claim 4, characterized in that: The high-voltage box module also includes a DC / DC power supply and a BMS-main controller. Port 3 is connected in parallel with the positive and negative terminals of the switching power supply 1 to port 2, the DC / DC power supply, and the BMS-main controller. The positive and negative terminals of port 2 are connected to the positive and negative terminals of the EMS. The DC / DC power supply has ports 10 and 11. The positive and negative terminals of port 10 are connected between port 3 and the positive and negative terminals of the switching power supply 1, respectively. A normally closed contact QF2 is provided between the positive terminal of port 10 and the positive terminal of port 3. The positive terminal of port 11 is connected between the positive terminal of port 1 and the fuse 1. The negative terminal of port 11 is connected between the negative terminal of port 1 and the shunt.

6. A novel high-voltage energy storage box according to claim 1, characterized in that: The high-voltage box module is equipped with a relay KA1 and a switching power supply 2. The positive terminal of port four is connected in sequence to the relay KA1, the switching power supply 2, and the positive terminal of port five. The negative terminal of port four is connected in sequence to the negative terminal of the switching power supply 2 and the negative terminal of port five. The positive and negative terminals of port four are respectively connected to the positive and negative terminals of the PACK fan. The positive and negative terminals of port five are respectively connected to the positive and negative terminals of the external wires.

7. A novel high-voltage energy storage box according to any one of claims 1 to 6, characterized in that: The BMS master controller is connected to the shunt, relays KM1, KM2, and KM3, circuit breaker AF1, BMS slave controller, relay KA1, and PCS electrical signals to achieve overall control of the high-voltage box.

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