CN218770742U - High-pressure tank of energy storage system - Google Patents

High-pressure tank of energy storage system Download PDF

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CN218770742U
CN218770742U CN202221086884.3U CN202221086884U CN218770742U CN 218770742 U CN218770742 U CN 218770742U CN 202221086884 U CN202221086884 U CN 202221086884U CN 218770742 U CN218770742 U CN 218770742U
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management unit
energy storage
contactor
storage system
battery management
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朱新华
李正力
史文强
李晶晶
王京
李肖辉
宋正伟
古领先
魏小锋
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Xuchangxu Relay Energy Storage Technology Co ltd
Xuji Group Co Ltd
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Xuchangxu Relay Energy Storage Technology Co ltd
Xuji Group Co Ltd
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Abstract

本实用新型的实施例公开了一种储能系统高压箱,包括箱体,所述箱体内设有直流断路器、直流电流传感器、接触器和电池管理单元;对应的,所述箱体的面板上安装有接线端子、断路器分合把手和电池管理单元通讯接口;所述直流断路器连接所述接线端子,通过所述接线端子连接外接电池组,将断路器连通或断开状态上传至所述电池管理单元;所述直流电流传感器将电流信号上传至所述电池管理单元;所述接触器连接所述接线端子,通过所述接线端子连接外接电池组,将所述接触器的接通或断开状态上传至所述电池管理单元。可进一步提升本地电池组电气主回路可靠性和电池管理单元性能,为电池系统可靠运行提供保障。

Figure 202221086884

The embodiment of the utility model discloses a high-voltage box for an energy storage system, which includes a box body, and a DC circuit breaker, a DC current sensor, a contactor, and a battery management unit are arranged in the box body; correspondingly, the box body The panel is equipped with wiring terminals, circuit breaker opening and closing handles, and the communication interface of the battery management unit; the DC circuit breaker is connected to the wiring terminals, and an external battery pack is connected through the wiring terminals, and the connection or disconnection status of the circuit breaker is uploaded to the The battery management unit; the DC current sensor uploads the current signal to the battery management unit; the contactor is connected to the terminal, and an external battery pack is connected through the terminal, and the connection of the contactor Or the disconnected state is uploaded to the battery management unit. It can further improve the reliability of the electrical main circuit of the local battery pack and the performance of the battery management unit, providing guarantee for the reliable operation of the battery system.

Figure 202221086884

Description

一种储能系统高压箱An energy storage system high pressure box

技术领域technical field

本实用新型涉及电池储能系统技术领域,特别涉及一种储能系统高压箱。The utility model relates to the technical field of battery energy storage systems, in particular to a high-voltage box of the energy storage system.

背景技术Background technique

目前,电池储能系统在发电侧、输配电侧、用户侧均发挥着无法替代的作用,应用场景广泛,是解决可再生能源并网消纳的重要手段之一。储能系统高压箱主要功能用于控制系统电气主回路连通或断开,其内部安装的电池管理单元(简称BMS)可同时实时监测电池电压、电流、温度及开关、接触器、风机等的状态,对本地电池组进行状态判别、热管理控制、均衡控制等操作,同时上送本地电池信息及响应遥控控制。At present, the battery energy storage system plays an irreplaceable role on the power generation side, power transmission and distribution side, and user side. It has a wide range of application scenarios and is one of the important means to solve the grid-connected consumption of renewable energy. The main function of the high-voltage box of the energy storage system is to control the connection or disconnection of the electrical main circuit of the system. The battery management unit (BMS) installed inside it can simultaneously monitor the battery voltage, current, temperature and the status of switches, contactors, fans, etc. in real time. , perform state discrimination, thermal management control, balance control and other operations on the local battery pack, and at the same time send local battery information and respond to remote control.

由于大规模储能系统管理电池数量众多、连接节点众多,电气回路的安全可靠性至关重要,现有的储能系统高压箱多采用电动汽车领域技术方案,电气主回路采用直流接触器进行连通或断开,电动汽车领域的直流接触器采用封闭式灭弧室结构,此类型接触器灭弧能力差,不适用于大功率、额定电压比较高的储能系统。电池管理单元仅具有本地电池组信息收集功能,不具备大规模储能系统主回路电气连接自检功能,储能系统投运安全可靠性无法保证。Due to the large number of batteries managed by the large-scale energy storage system and the large number of connection nodes, the safety and reliability of the electrical circuit is very important. The existing high-voltage boxes of the energy storage system mostly adopt technical solutions in the field of electric vehicles, and the electrical main circuit is connected by a DC contactor. Or off, the DC contactor in the field of electric vehicles adopts a closed arc extinguishing chamber structure. This type of contactor has poor arc extinguishing ability and is not suitable for energy storage systems with high power and relatively high rated voltage. The battery management unit only has the function of collecting local battery pack information, and does not have the function of self-checking the electrical connection of the main circuit of the large-scale energy storage system. The safety and reliability of the energy storage system cannot be guaranteed.

相关技术中,高压箱技术方案及结构形式众多,如何进行电气主回路可靠性、物料总成本降低、电池管理单元性能等方面优化,成为本领域技术人员需要解决的问题。In the related technology, there are many technical solutions and structural forms of the high voltage box. How to optimize the reliability of the electrical main circuit, the reduction of the total cost of materials, and the performance of the battery management unit has become a problem to be solved by those skilled in the art.

现有的储能系统,电气主回路连通或断开采用汽车领域直流接触器,此类型接触器采用封闭式灭弧室结构,灭弧能力差,不适用于大功率、额定电压比较高的储能系统;电池管理单元不具备大规模储能系统主回路电气连接自检功能,储能系统投运安全可靠性无法保证。In the existing energy storage system, the DC contactor in the automotive field is used to connect or disconnect the electrical main circuit. This type of contactor adopts a closed arc extinguishing chamber structure, which has poor arc extinguishing ability and is not suitable for storage with high power and relatively high rated voltage. The energy system; the battery management unit does not have the self-check function of the electrical connection of the main circuit of the large-scale energy storage system, and the safety and reliability of the energy storage system cannot be guaranteed.

实用新型内容Utility model content

本实用新型的目的在于提供一种储能系统高压箱,用于解决上述至少一个技术问题,其采用适用于大功率、额定电压1500VDC储能系统的开关、主正接触器、主负接触器,同时在主电气回路安装高精度直流电流传感器和熔断器,提升电气主回路可靠性;电池管理单元对高精度直流电流传感器采集的电流信号进行处理,具备电气主回路自检功能,可在储能系统投运前和运行中对因连接节点不可靠造成的电流尖峰、拉弧信号进行实时筛查,可进一步提升本地电池组电气主回路可靠性和电池管理单元性能,为电池系统可靠运行提供保障。The purpose of this utility model is to provide a high-voltage box for an energy storage system, which is used to solve at least one of the above-mentioned technical problems. At the same time, high-precision DC current sensors and fuses are installed in the main electrical circuit to improve the reliability of the electrical main circuit; the battery management unit processes the current signals collected by the high-precision DC current sensor, and has the self-test function of the electrical main circuit, which can be used in energy storage. Real-time screening of current spikes and arcing signals caused by unreliable connection nodes before and during system operation can further improve the reliability of the electrical main circuit of the local battery pack and the performance of the battery management unit, providing a guarantee for the reliable operation of the battery system .

本实用新型的实施例是这样实现的:Embodiments of the utility model are achieved in that:

一种储能系统高压箱,其包括箱体10,所述箱体10内设有直流断路器20、直流电流传感器70、接触器和电池管理单元130;A high-voltage box for an energy storage system, which includes a box body 10, and the box body 10 is provided with a DC circuit breaker 20, a DC current sensor 70, a contactor, and a battery management unit 130;

对应的,所述箱体10的面板上安装有接线端子、断路器分合把手和电池管理单元通讯接口;Correspondingly, the panel of the box body 10 is equipped with terminal blocks, breaker opening and closing handles and battery management unit communication interface;

所述直流断路器20连接所述接线端子,通过所述接线端子连接外接电池组,将断路器连通或断开状态上传至所述电池管理单元130;The DC circuit breaker 20 is connected to the connecting terminal, and an external battery pack is connected through the connecting terminal, and the connected or disconnected state of the circuit breaker is uploaded to the battery management unit 130;

所述直流电流传感器70将电流信号上传至所述电池管理单元130;The DC current sensor 70 uploads the current signal to the battery management unit 130;

所述接触器连接所述接线端子,通过所述接线端子连接外接电池组,将所述接触器的接通或断开状态上传至所述电池管理单元130;The contactor is connected to the terminal, and an external battery pack is connected through the terminal, and the on or off state of the contactor is uploaded to the battery management unit 130;

所述电池管理单元130用于收集本地电池信息,并对本地电池组进行状态判别、热管理控制和均衡控制,上送本地电池信息及响应遥控控制,对所述直流断路器20采集的电流信号进行处理。The battery management unit 130 is used to collect local battery information, perform state discrimination, thermal management control, and balance control on the local battery pack, send local battery information and respond to remote control, and collect current signals from the DC circuit breaker 20 to process.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述接线端子包括电池组总正接线端子、电池组总负接线端子及对外总正接线端子、对外总负接线端子;In a preferred embodiment of the present invention, the terminals of the high voltage box of the energy storage system include a battery pack general positive terminal, a battery pack general negative terminal, an external general positive terminal, and an external general negative terminal;

所述对外总正接线端子、所述电池组总正接线端子组成正极电气回路;The external general positive terminal and the battery pack general positive terminal form a positive electrical circuit;

所述对外总负接线端子、所述电池组总负接线端子组成负极电气回路;The external general negative terminal and the battery pack general negative terminal form a negative electrical circuit;

所述直流断路器20接入电气回路。The DC circuit breaker 20 is connected to the electrical circuit.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有熔断器80;In a preferred embodiment of the present utility model, a fuse 80 is also provided in the box body 10 of the high-voltage box of the energy storage system;

所述熔断器80接入所述正极电气回路,用于为储能系统短路过电流以及作为后备保护。The fuse 80 is connected to the positive electric circuit, and is used for short-circuiting and overcurrent of the energy storage system and as backup protection.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述接触器包括主正接触器30和主负接触器40;In a preferred embodiment of the present utility model, the contactors of the high-voltage box of the energy storage system include a main positive contactor 30 and a main negative contactor 40;

所述主正接触器30接入所述正极电气回路,将所述主正接触器30的接通或断开状态上传至所述电池管理单元130;The main positive contactor 30 is connected to the positive electrical circuit, and the on or off state of the main positive contactor 30 is uploaded to the battery management unit 130;

所述主负接触器40接入所述负极电气回路,将所述主负接触器40的接通或断开状态上传至所述电池管理单元130。The main negative contactor 40 is connected to the negative electrical circuit, and the on or off state of the main negative contactor 40 is uploaded to the battery management unit 130 .

在本实用新型较佳的实施例中,上述储能系统高压箱的所述直流电流传感器70接入所述负极电气回路。In a preferred embodiment of the present utility model, the DC current sensor 70 of the high voltage box of the energy storage system is connected to the negative electrical circuit.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述主正接触器30并联有保护回路;In a preferred embodiment of the present utility model, the main positive contactor 30 of the high voltage box of the energy storage system is connected in parallel with a protection circuit;

所述保护回路包括预充电阻60和预充接触器50。The protection circuit includes a pre-charging resistor 60 and a pre-charging contactor 50 .

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有主正母排组件90和主负母排组件100;In a preferred embodiment of the present utility model, a main positive busbar assembly 90 and a main negative busbar assembly 100 are also provided in the box body 10 of the high voltage box of the energy storage system;

所述主正母排组件90连接所述正极电气回路;The main positive busbar assembly 90 is connected to the positive electrical circuit;

所述主负母排组件100连接所述负极电气回路。The main and negative busbar assembly 100 is connected to the negative electrical circuit.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有电源模块,为本地电池组散热风机和所述电池管理单元130独立供电;In a preferred embodiment of the present utility model, a power module is also provided in the box body 10 of the high-voltage box of the energy storage system to provide independent power supply for the cooling fan of the local battery pack and the battery management unit 130;

所述电源模块包括第一电源模块110和第二电源模块120。The power module includes a first power module 110 and a second power module 120 .

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10还包括底板、侧板、盖板和后面板;In a preferred embodiment of the present utility model, the box body 10 of the high-pressure box of the energy storage system further includes a bottom plate, a side plate, a cover plate and a rear panel;

所述侧板上设置有散热孔。The side plate is provided with cooling holes.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10的面板上还设有信号接口、指示灯、绝缘检测接口和电池管理单元通讯接口。In a preferred embodiment of the present invention, the panel of the box body 10 of the high voltage box of the energy storage system is further provided with a signal interface, an indicator light, an insulation detection interface and a battery management unit communication interface.

本实用新型实施例的有益效果是:The beneficial effects of the utility model embodiment are:

本实用新型采用适用于大功率、额定电压1500VDC储能系统的断路器、接触器、直流电流传感器、熔断器、铜排组件组成电气主回路,直流电流传感器具备优于0.5级高精度电流采样并上传至电池管理单元,电池管理单元对高精度直流电流传感器采集的电流信号进行处理,具备电气主回路自检功能,可在储能系统投运前和运行中对因连接节点不可靠造成的电流尖峰、拉弧信号进行实时筛查,上述措施可进一步提升本地电池组电气主回路可靠性和电池管理单元性能,为电池系统可靠运行提供保障。The utility model adopts a circuit breaker, a contactor, a DC current sensor, a fuse, and a copper bar assembly suitable for a high-power, rated voltage 1500VDC energy storage system to form an electrical main circuit. The DC current sensor has a high-precision current sampling and Uploaded to the battery management unit, the battery management unit processes the current signal collected by the high-precision DC current sensor, and has the self-inspection function of the electrical main circuit. The above-mentioned measures can further improve the reliability of the electrical main circuit of the local battery pack and the performance of the battery management unit, and provide guarantee for the reliable operation of the battery system.

附图说明Description of drawings

为了更清楚地说明本实用新型实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,应当理解,以下附图仅示出了本实用新型的某些实施例,因此不应被看作是对范围的限定,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

图1为本实用新型储能系统高压箱结构示意图;Fig. 1 is a schematic structural diagram of the high-voltage box of the energy storage system of the present invention;

图2为本实用新型储能系统高压箱电气主回路结构示意图;Fig. 2 is a schematic structural diagram of the electrical main circuit of the high voltage box of the energy storage system of the present invention;

图3为本实用新型储能系统高压箱电池管理单元功能示意图。Fig. 3 is a functional schematic diagram of the battery management unit of the high voltage box of the energy storage system of the present invention.

图中:10-箱体;20-直流断路器;30-主正接触器;40-主负接触器;50-预充接触器;60-预充电阻;70-直流电流传感器;80-熔断器;90-主正母排组件;100-主负母排组件;110-24V电源1模块;120-24V电源2模块;130-电池管理单元。In the figure: 10-box; 20-DC circuit breaker; 30-main positive contactor; 40-main negative contactor; 50-precharge contactor; 60-precharge resistance; 70-DC current sensor; 80-fuse 90-main positive busbar assembly; 100-main negative busbar assembly; 1 module of 110-24V power supply; 2 modules of 120-24V power supply; 130-battery management unit.

具体实施方式Detailed ways

为使本实用新型实施例的目的、技术方案和优点更加清楚,下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本实用新型一部分实施例,而不是全部的实施例。通常在此处附图中描述和示出的本实用新型实施例的组件能够以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein can be arranged and designed in a variety of different configurations.

请参照图1至图3,本实用新型的实施例提供一种储能系统高压箱,其包括箱体10,所述箱体10内设有直流断路器20、直流电流传感器70、接触器和电池管理单元130;Please refer to Fig. 1 to Fig. 3, the embodiment of the utility model provides a high-voltage box of an energy storage system, which includes a box body 10, and the box body 10 is provided with a DC circuit breaker 20, a DC current sensor 70, a contactor and battery management unit 130;

对应的,所述箱体10的面板上安装有接线端子、断路器分合把手和电池管理单元通讯接口;Correspondingly, the panel of the box body 10 is equipped with terminal blocks, breaker opening and closing handles and battery management unit communication interface;

所述直流断路器20连接所述接线端子,通过所述接线端子连接外接电池组,将断路器连通或断开状态上传至所述电池管理单元130;The DC circuit breaker 20 is connected to the connecting terminal, and an external battery pack is connected through the connecting terminal, and the connected or disconnected state of the circuit breaker is uploaded to the battery management unit 130;

所述直流断路器20额定工作电压为1500VDC,额定电流不低于250A。The DC circuit breaker 20 has a rated operating voltage of 1500VDC and a rated current of not less than 250A.

所述直流电流传感器70将电流信号上传至所述电池管理单元130;The DC current sensor 70 uploads the current signal to the battery management unit 130;

所述直流电流传感器70额定工作电压为1500VDC,满足250A/75mV、优于0.5级要求。The rated operating voltage of the DC current sensor 70 is 1500VDC, which meets the requirements of 250A/75mV and is better than 0.5 level.

所述接触器连接所述接线端子,通过所述接线端子连接外接电池组,将所述接触器的接通或断开状态上传至所述电池管理单元130;The contactor is connected to the terminal, and an external battery pack is connected through the terminal, and the on or off state of the contactor is uploaded to the battery management unit 130;

所述电池管理单元130用于收集本地电池信息,并对本地电池组进行状态判别、热管理控制和均衡控制,上送本地电池信息及响应遥控控制,对所述直流断路器20采集的电流信号进行处理。The battery management unit 130 is used to collect local battery information, perform state discrimination, thermal management control, and balance control on the local battery pack, send local battery information and respond to remote control, and collect current signals from the DC circuit breaker 20 to process.

所述电池管理单元130除收集本地电池信息并对本地电池组进行状态判别、热管理控制、均衡控制等操作,同时上送本地电池信息及响应遥控控制的功能外,对直流电流传感器采集的电流信号进行处理,具备电气主回路自检功能,可在储能系统投运前和运行中对因连接节点不可靠造成的电流尖峰、拉弧信号进行实时筛查,进一步提升本地电池组电气主回路可靠性和电池管理单元性能。The battery management unit 130 collects local battery information and performs operations such as state discrimination, thermal management control, and equalization control on the local battery pack, and at the same time sends local battery information and responds to remote control functions. The current collected by the DC current sensor The signal is processed, and it has the self-inspection function of the electrical main circuit. It can screen the current spikes and arcing signals caused by unreliable connection nodes before and during the operation of the energy storage system, and further improve the electrical main circuit of the local battery pack. reliability and battery management unit performance.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述接线端子包括电池组总正接线端子、电池组总负接线端子及对外总正接线端子、对外总负接线端子;In a preferred embodiment of the present invention, the terminals of the high voltage box of the energy storage system include a battery pack general positive terminal, a battery pack general negative terminal, an external general positive terminal, and an external general negative terminal;

所述对外总正接线端子、所述电池组总正接线端子组成正极电气回路;The external general positive terminal and the battery pack general positive terminal form a positive electrical circuit;

所述对外总负接线端子、所述电池组总负接线端子组成负极电气回路;The external general negative terminal and the battery pack general negative terminal form a negative electrical circuit;

所述直流断路器20接入电气回路。The DC circuit breaker 20 is connected to the electrical circuit.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有熔断器80;In a preferred embodiment of the present utility model, a fuse 80 is also provided in the box body 10 of the high-voltage box of the energy storage system;

所述熔断器80接入所述正极电气回路,用于为储能系统短路过电流以及作为后备保护。The fuse 80 is connected to the positive electric circuit, and is used for short-circuiting and overcurrent of the energy storage system and as backup protection.

所述熔断器80额定工作电压为1500VDC,额定电流200A~400A,具有强限流、高分断能力。The fuse 80 has a rated operating voltage of 1500VDC, a rated current of 200A-400A, and has strong current limiting and high breaking capacity.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述接触器包括主正接触器30和主负接触器40;In a preferred embodiment of the present utility model, the contactors of the high-voltage box of the energy storage system include a main positive contactor 30 and a main negative contactor 40;

所述主正接触器30接入所述正极电气回路,将所述主正接触器30的接通或断开状态上传至所述电池管理单元130;The main positive contactor 30 is connected to the positive electrical circuit, and the on or off state of the main positive contactor 30 is uploaded to the battery management unit 130;

所述主负接触器40接入所述负极电气回路,将所述主负接触器40的接通或断开状态上传至所述电池管理单元130。The main negative contactor 40 is connected to the negative electrical circuit, and the on or off state of the main negative contactor 40 is uploaded to the battery management unit 130 .

在本实用新型较佳的实施例中,上述储能系统高压箱的所述直流电流传感器70接入所述负极电气回路。In a preferred embodiment of the present utility model, the DC current sensor 70 of the high voltage box of the energy storage system is connected to the negative electrical circuit.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述主正接触器30并联有保护回路;In a preferred embodiment of the present utility model, the main positive contactor 30 of the high voltage box of the energy storage system is connected in parallel with a protection circuit;

所述保护回路包括预充电阻60和预充接触器50。The protection circuit includes a pre-charging resistor 60 and a pre-charging contactor 50 .

所述预充电阻60为欧姆级电阻,额定工作电压为1500VDC。The pre-charging resistor 60 is an ohm-level resistor with a rated working voltage of 1500VDC.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有主正母排组件90和主负母排组件100;In a preferred embodiment of the present utility model, a main positive busbar assembly 90 and a main negative busbar assembly 100 are also provided in the box body 10 of the high voltage box of the energy storage system;

所述主正母排组件90连接所述正极电气回路;The main positive busbar assembly 90 is connected to the positive electrical circuit;

所述主负母排组件100连接所述负极电气回路。The main and negative busbar assembly 100 is connected to the negative electrical circuit.

所述主正母排组件90和所述主负母排组件100材质为铜材质,外套绝缘层,工作电压为1500VDC。The main positive busbar assembly 90 and the main negative busbar assembly 100 are made of copper, covered with an insulating layer, and have a working voltage of 1500VDC.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10内还设有电源模块,为本地电池组散热风机和所述电池管理单元130独立供电;In a preferred embodiment of the present utility model, a power module is also provided in the box body 10 of the high-voltage box of the energy storage system to provide independent power supply for the cooling fan of the local battery pack and the battery management unit 130;

所述电源模块包括第一电源模块110和第二电源模块120。The power module includes a first power module 110 and a second power module 120 .

所述第一电源模块110和所述第二电源模块120均为24V。Both the first power supply module 110 and the second power supply module 120 are 24V.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10还包括底板、侧板、盖板和后面板;In a preferred embodiment of the present utility model, the box body 10 of the high-pressure box of the energy storage system further includes a bottom plate, a side plate, a cover plate and a rear panel;

所述侧板上设置有散热孔。The side plate is provided with cooling holes.

所述箱体10为钣金件。The box body 10 is a sheet metal part.

在本实用新型较佳的实施例中,上述储能系统高压箱的所述箱体10的面板上还设有信号接口、指示灯、绝缘检测接口和电池管理单元通讯接口。In a preferred embodiment of the present invention, the panel of the box body 10 of the high voltage box of the energy storage system is further provided with a signal interface, an indicator light, an insulation detection interface and a battery management unit communication interface.

本实用新型实施例旨在保护一种储能系统高压箱,具备如下效果:The embodiment of the utility model aims to protect a high-voltage box of an energy storage system, and has the following effects:

1.本实用新型采用适用于大功率、额定电压1500VDC储能系统的直流断路器、主正接触器、主负接触器、预充接触器、预充电阻、直流电流传感器、熔断器、主正母排组件、主负母排组件,所组成的电气主回路可满足大规模储能系统可靠性的要求。1. The utility model adopts a DC circuit breaker, a main positive contactor, a main negative contactor, a pre-charging contactor, a pre-charging resistance, a DC current sensor, a fuse, a main positive The electrical main circuit composed of busbar components, main and negative busbar components can meet the reliability requirements of large-scale energy storage systems.

2.本实用新型的直流电流传感器满足优于0.5级高精度电流采样并上传至电池管理单元要求,电池管理单元对高精度直流电流传感器采集的电流信号进行处理,具备电气主回路自检功能,可在储能系统投运前和运行中对因连接节点不可靠造成的电流尖峰、拉弧信号进行实时筛查,上述措施可进一步提升本地电池组电气主回路可靠性和电池管理单元性能,为电池系统可靠运行提供保障。2. The DC current sensor of the utility model meets the requirements of better than 0.5 level high-precision current sampling and uploads to the battery management unit. The battery management unit processes the current signal collected by the high-precision DC current sensor and has the self-test function of the electrical main circuit. Real-time screening of current spikes and arcing signals caused by unreliable connection nodes can be carried out before and during the operation of the energy storage system. The above measures can further improve the reliability of the electrical main circuit of the local battery pack and the performance of the battery management unit. The reliable operation of the battery system provides guarantee.

3.本实用新型的预充接触器与预充电阻组成的预充电回路将母线电容进行预充电,可有限确保电气主回路正产运行。3. The pre-charging circuit composed of the pre-charging contactor and the pre-charging resistor of the utility model pre-charges the bus capacitance, which can ensure the normal operation of the electrical main circuit to a limited extent.

4.本实用新型的电池管理单元接收上级电池系统PCS汇流柜断开信号,本地电池系统电气主回路无电流,可实现不带载切断电气主回路,可有效保护箱内元器件。4. The battery management unit of the utility model receives the disconnection signal of the upper-level battery system PCS confluence cabinet, and the electrical main circuit of the local battery system has no current, which can cut off the electrical main circuit without load and effectively protect the components in the box.

应当理解的是,本实用新型的上述具体实施方式仅仅用于示例性说明或解释本实用新型的原理,而不构成对本实用新型的限制。因此,在不偏离本实用新型的精神和范围的情况下所做的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。此外,本实用新型所附权利要求旨在涵盖落入所附权利要求范围和边界、或者这种范围和边界的等同形式内的全部变化和修改例。It should be understood that the above specific embodiments of the present utility model are only used to illustrate or explain the principle of the present utility model, but not to limit the present utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model shall be included in the protection scope of the present utility model. Furthermore, the appended claims are intended to cover all changes and modifications that come within the scope and boundaries of the appended claims, or equivalents of such scope and boundaries.

Claims (10)

1. The high-voltage box of the energy storage system is characterized by comprising a box body (10), wherein a direct current breaker (20), a direct current sensor (70), a contactor and a battery management unit (130) are arranged in the box body (10);
correspondingly, a wiring terminal, a breaker opening and closing handle and a battery management unit communication interface are arranged on a panel of the box body (10);
the direct current circuit breaker (20) is connected with the wiring terminal, is connected with an external battery pack through the wiring terminal, and uploads the connection or disconnection state of the circuit breaker to the battery management unit (130);
the DC current sensor (70) uploading a current signal to the battery management unit (130);
the contactor is connected with the wiring terminal, an external battery pack is connected through the wiring terminal, and the on-off state of the contactor is uploaded to the battery management unit (130);
the battery management unit (130) is used for collecting local battery information, performing state discrimination, thermal management control and balance control on a local battery pack, uploading the local battery information and responding to remote control, and processing a current signal acquired by the direct current circuit breaker (20).
2. The energy storage system high-voltage box according to claim 1, wherein the terminals comprise a battery pack general positive terminal, a battery pack general negative terminal, an external general positive terminal and an external general negative terminal;
the external main positive terminal and the battery pack main positive terminal form a positive electrode electric loop;
the external total negative connecting terminal and the battery pack total negative connecting terminal form a negative electric loop;
the direct current breaker (20) is connected into an electric loop.
3. The energy storage system high pressure tank of claim 2, characterized in that a fuse (80) is further provided in the tank (10);
and the fuse (80) is connected into the positive electrode electric loop and is used for short-circuit and over-current of the energy storage system and backup protection.
4. The energy storage system high pressure tank of claim 2, wherein the contactor comprises a main positive contactor (30) and a main negative contactor (40);
the main positive contactor (30) is connected into the positive electrical circuit, and the on or off state of the main positive contactor (30) is uploaded to the battery management unit (130);
the main negative contactor (40) is connected into the negative electrical circuit, and the connection or disconnection state of the main negative contactor (40) is uploaded to the battery management unit (130).
5. The energy storage system high pressure tank of claim 2, wherein the dc current sensor (70) is connected into the negative electrical circuit.
6. The energy storage system high pressure tank of claim 4,
the main positive contactor (30) is connected with a protection loop in parallel;
the protection circuit comprises a pre-charging resistor (60) and a pre-charging contactor (50).
7. The energy storage system high-pressure tank as claimed in claim 2, characterized in that a main positive busbar assembly (90) and a main negative busbar assembly (100) are further arranged in the tank body (10);
the main positive busbar component (90) is connected with the positive electrode electric circuit;
the main negative busbar assembly (100) is connected with the negative electrode electric loop.
8. The energy storage system high-pressure tank as claimed in claim 1, characterized in that a power module is further arranged in the tank body (10) to independently supply power to the local battery pack cooling fan and the battery management unit (130);
the power supply module includes a first power supply module (110) and a second power supply module (120).
9. The energy storage system high pressure tank of claim 1,
the box body (10) also comprises a bottom plate, side plates, a cover plate and a rear panel;
the side plate is provided with heat dissipation holes.
10. The energy storage system high pressure tank of claim 1,
and a panel of the box body (10) is also provided with a signal interface, an indicator light, an insulation detection interface and a battery management unit communication interface.
CN202221086884.3U 2022-05-08 2022-05-08 High-pressure tank of energy storage system Active CN218770742U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114744514A (en) * 2022-05-08 2022-07-12 许昌许继电科储能技术有限公司 High-pressure tank of energy storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114744514A (en) * 2022-05-08 2022-07-12 许昌许继电科储能技术有限公司 High-pressure tank of energy storage system

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