High-capacity multipath isolated mobile energy storage high-voltage system

Abstract

The utility model discloses a high-capacity multi-path isolated mobile energy storage high-voltage system, which comprises an energy storage station, and is characterized by further comprising a series-parallel battery system, a high-voltage box, a distribution box and a DCDC (Direct Current to Direct Current) output system, the output end of the series-parallel battery system is connected with the DCDC output system through the high-voltage box, so that the capacity and the voltage of the mobile energy storage system can be increased by adding battery clusters, battery strings and battery boxes in each string of batteries under the condition that the installation space is enough; the current sensors are arranged in the high-voltage box before the negative electrodes of the branch battery strings are connected in parallel, the charging and discharging conditions of the branch battery strings and the circulating current conditions among the branches can be monitored in real time, the BMS can control the battery strings to be switched on and off in time if abnormity occurs, and the use safety of the mobile energy storage system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile energy storage, and particularly relates to a high-voltage mobile energy storage system with large capacity and multi-channel isolation. Background Technique

[0002] Mobile energy storage is an energy storage and supply solution realized by mobile equipment. It combines energy storage technology and mobility, enabling energy to be stored when needed and released later. This technology has the advantages of environmental friendliness, mobility, high power supply quality, etc., and can effectively solve the problem that traditional emergency power supply vehicles need to cut off power during the power supply connection and disconnection processes.

[0003] The existing energy storage systems have the following drawbacks in actual use: the capacity of the existing energy storage systems is limited, and the failure of the battery system during use may affect the stable operation of the entire system. Moreover, the safety of the existing mobile energy storage systems still has room for improvement. For this reason, we propose a high-voltage mobile energy storage system with large capacity and multi-channel isolation. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a high-voltage mobile energy storage system with large capacity and multi-channel isolation. Through the cooperation of various components and the modular expansion method, the mobile energy storage system is made safer and more efficient in use, and can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A high-voltage mobile energy storage system with large capacity and multi-channel isolation includes an energy storage station, and also includes a series-parallel battery system, a high-voltage box, a distribution box, and a DCDC output system. The series-parallel battery system is internally provided with multiple groups of battery strings, and the output end of the series-parallel battery system is connected to the DCDC output system through the high-voltage box. Current sensors are provided at the positions before the negative electrodes of each branch battery string are connected in parallel inside the high-voltage box, and a lead-acid battery and a UPS device are provided inside the distribution box.

[0007] Furthermore, a charging circuit corresponding to the battery string is provided inside the high-voltage box, a relay is provided at the positive end of each charging circuit, and a fuse is provided at the negative end of each charging circuit; the charging circuit is used to connect the charging circuit, and the relay and the fuse can quickly disconnect the charging circuit in case of emergency.

[0008] Furthermore, a discharging circuit is provided inside the high-voltage box, a relay and a pre-charging circuit are provided at the positive end of each discharging circuit, and a fuse is provided at the negative end of each discharging circuit; the discharging circuit is used to connect the discharging circuit, and the pre-charging circuit can effectively avoid the electrical components in the discharging circuit from being burned due to excessive current when the capacitive load starts.

[0009] Further, manual maintenance switches are installed at the control ends of both the charging circuit and the discharging circuit. A liquid cooling unit power supply circuit is provided inside the high-voltage box. Diodes are provided at the positive extreme ends of the liquid cooling unit power supply circuit, and relays are provided at the negative extreme ends of the liquid cooling unit power supply circuit. The relay and diode structures prevent the batteries in each string from circulating current on the liquid cooling unit power supply circuit and thus burning out the electrical components on the liquid cooling unit power supply circuit.

[0010] Further, fuses are provided in each battery string branch, and the DCDC output system is provided with high-voltage connection ports corresponding to each discharging circuit and each battery string; the high-voltage connection ports of the DCDC output system correspond to and are connected to each charging and discharging circuit.

[0011] Further, the distribution box is electrically connected to the power supply ends of the fire protection, lighting, and control systems through lead-acid batteries and a UPS device, and circuit breakers are provided at the circuit connection ends; through the lead-acid batteries, the UPS device, and multiple circuit breakers, uninterrupted power supply for the lighting, fire protection, and control systems is ensured, and when overcurrent or short circuit occurs in each system, each circuit can be timely disconnected to ensure system safety.

[0012] Compared with the prior art, the present utility model has the following beneficial effects: The overall device adopts an expandable structure. When there is enough installation space, the capacity and voltage of the mobile energy storage system can be increased by adding battery clusters, battery strings, and battery boxes in each string of batteries. Fuses are provided in each battery string of each branch to provide overcurrent and short-circuit protection for each branch. Current sensors are provided in the high-voltage box before the negative poles of the battery strings in each branch are connected in parallel, which can monitor the charging and discharging conditions of each battery string branch and the circulating current conditions between each branch in real time. If an abnormality occurs, the BMS can timely control the on / off of each battery string. The high-voltage box is provided with relays, fuses, and manual maintenance switches for each charging and discharging circuit. When an abnormality occurs during charging and discharging, the on / off response of the circuit can be timely performed, and in case of an emergency, the charging and discharging circuit can be quickly manually disconnected. The pre-charge circuit can effectively avoid excessive current when starting a capacitive load and burning out the electrical components in the discharging circuit. Relays and diodes are provided on the liquid cooling unit power supply circuit in the high-voltage box, which can effectively prevent the batteries in each string from circulating current on the liquid cooling unit power supply circuit and thus burning out the electrical components on the liquid cooling unit power supply circuit. It can also control the start and stop of the liquid cooling unit according to the environmental conditions of the battery system. The overall device has multiple charging and discharging ports, and the discharge distribution is more reasonable. Multiple chargers can be used for charging simultaneously to make the charging speed faster. Inside the distribution box, through lead-acid batteries, a UPS device, and multiple circuit breakers, uninterrupted power supply for the lighting, fire protection, and control systems is ensured, and when overcurrent or short circuit occurs in each system, each circuit can be timely disconnected to ensure system safety. Description of the Drawings

[0013] Figure 1 This is a schematic diagram of the external structure of the energy storage device of a large-capacity multi-channel isolated mobile energy storage high-voltage system of the present utility model.

[0014] Figure 2 This is the schematic diagram of the mobile energy storage high voltage of a large-capacity multi-channel isolated mobile energy storage high-voltage system of the present utility model.

[0015] Figure 3 This is the schematic diagram of the high-voltage box of a large-capacity multi-channel isolated mobile energy storage high-voltage system of the present utility model.

[0016] Figure 4 This is the schematic diagram of the distribution box of a large-capacity multi-channel isolated mobile energy storage high-voltage system of the present utility model. Specific embodiments

[0017] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] As Figures 1-4 shown, a large-capacity multi-channel isolated mobile energy storage high-voltage system includes an energy storage station, and also includes a series-parallel battery system, a high-voltage box, a distribution box and a DCDC output system. The series-parallel battery system is internally provided with battery strings and there are multiple groups of battery strings. The output end of the series-parallel battery system is connected to the DCDC output system through the high-voltage box. Current sensors are provided at the positions before the negative poles of each branch battery string are connected in parallel inside the high-voltage box. A lead-acid battery and a UPS device are provided inside the distribution box.

[0019] Among them, a charging circuit corresponding to the battery string is provided inside the high-voltage box. Relays are provided at the positive ends of the charging circuits, and fuses are provided at the negative ends of the charging circuits. A discharging circuit is provided inside the high-voltage box. Relays and pre-charging circuits are provided at the positive ends of the discharging circuits, and fuses are provided at the negative ends of the discharging circuits. The charging circuit is used to connect the charging circuit. The relay and the fuse can quickly disconnect the charging circuit in an emergency. The discharging circuit is used to connect the discharging circuit. The pre-charging circuit can effectively avoid the electrical components in the discharging circuit from being burned out due to excessive current when the capacitive load starts.

[0020] Among them, manual maintenance switches are installed at the control ends of the charging circuit and the discharging circuit. A liquid cooling unit power supply circuit is provided inside the high-voltage box. Diodes are provided at the positive extreme ends of the liquid cooling unit power supply circuit, and relays are provided at the negative extreme ends of the liquid cooling unit power supply circuit. Fuses are arranged in each battery string branch, and the DCDC output system is provided with high-voltage connection ports corresponding to each discharging circuit and each battery string; the relay and diode structures prevent the circulation of each string of batteries on the liquid cooling unit power supply circuit, thereby burning out the electrical components on the liquid cooling unit power supply circuit. The high-voltage connection ports of the DCDC output system correspond to and are connected to each charge-discharge circuit.

[0021] Among them, the distribution box is electrically connected to the power supply ends of the fire protection, lighting, and control systems through lead-acid batteries and a UPS device, and circuit breakers are provided at the circuit connection ends; through the lead-acid batteries, the UPS device, and multiple circuit breakers, uninterrupted power supply for the lighting, fire protection, and control systems is ensured, and each circuit can be timely disconnected when overcurrent or short circuit occurs in each system, ensuring system safety.

[0022] It should be noted that the present utility model is a large-capacity multi-channel isolated mobile energy storage high-voltage system. During operation, the overall device adopts an expandable structure. When there is sufficient installation space, the capacity and voltage of the mobile energy storage system can be increased by adding battery clusters, battery strings, and battery boxes in each string of batteries. Fuses are arranged in each battery string branch of each branch to provide overcurrent and short-circuit protection for each branch. Current sensors are provided in the high-voltage box before the negative poles of each battery string branch are connected in parallel, which can monitor the charge-discharge status of each battery string branch and the circulation status between each branch in real time. If an abnormality occurs, the BMS can timely control the on-off of each battery string. The high-voltage box is provided with relays, fuses, and manual maintenance switches for each charging and discharging circuit. When an abnormality occurs during charge and discharge, the on-off response of the circuit can be timely carried out, and in case of an emergency, the charge-discharge circuit can be quickly manually disconnected. The pre-charge circuit can effectively avoid the excessive current at the start of capacitive loads from burning out the electrical components in the discharging circuit. Relays and diodes are provided on the liquid cooling unit power supply circuit in the high-voltage box, which can effectively prevent the circulation of each string of batteries on the liquid cooling unit power supply circuit, thereby burning out the electrical components on the liquid cooling unit power supply circuit, and can also control the start and stop of the liquid cooling unit according to the environmental conditions of the battery system. The overall device has multiple charge-discharge ports, and the discharge distribution is more reasonable. Multiple chargers can be used for charging simultaneously to make the charging speed faster. Inside the distribution box, through lead-acid batteries, a UPS device, and multiple circuit breakers, uninterrupted power supply for the lighting, fire protection, and control systems is ensured, and each circuit can be timely disconnected when overcurrent or short circuit occurs in each system, ensuring system safety.

[0023] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-voltage mobile energy storage system with large capacity and multi-channel isolation, including an energy storage station, characterized in that, It further includes a series-parallel battery system, a high-voltage box, a power distribution box, and a DCDC output system. The series-parallel battery system has built-in battery strings, and there are multiple groups of battery strings. The output end of the series-parallel battery system is connected to the DCDC output system through the high-voltage box. Current sensors are provided at the positions before the negative poles of each branch battery string are paralleled inside the high-voltage box. A lead-acid battery and a UPS device are provided inside the power distribution box.

2. The high-voltage mobile energy storage system with large capacity and multi-channel isolation according to claim 1, wherein: Charging circuits corresponding to the battery strings are provided inside the high-voltage box. Relays are provided at the positive terminals of the charging circuits, and fuses are provided at the negative terminals of the charging circuits.

3. The high-voltage system for mobile energy storage with large capacity and multi-channel isolation according to claim 2, characterized in that: Discharge circuits are provided inside the high-voltage box. Relays and pre-charge circuits are provided at the positive terminals of the discharge circuits, and fuses are provided at the negative terminals of the discharge circuits.

4. A large-capacity multi-channel isolated mobile energy storage high-voltage system according to claim 3, characterized in that: Manual maintenance switches are installed at the control ends of the charging circuits and the discharge circuits. A liquid-cooled unit power supply circuit is provided inside the high-voltage box. Diodes are provided at the positive terminals of the liquid-cooled unit power supply circuit, and relays are provided at the negative terminals of the liquid-cooled unit power supply circuit.

5. A high-voltage mobile energy storage system with large capacity and multi-channel isolation according to claim 4, characterized in that: Fuses are provided in each battery string branch. The DCDC output system is provided with high-voltage connection ports corresponding to each discharge circuit and each battery string.

6. A high-voltage mobile energy storage system with large capacity and multi-channel isolation according to claim 5, characterized in that: The power distribution box is electrically connected to the power supply ends of the fire protection, lighting, and control systems through the lead-acid battery and the UPS device, and circuit breakers are provided at the circuit connection ends.

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