Energy storage high-voltage distribution box

Abstract

The utility model relates to the technical field of high-voltage distribution boxes, in particular to an energy storage high-voltage distribution box which comprises a direct-current module, an alternating-current module and a BMS used for controlling the direct-current module and the alternating-current module. The direct current module comprises a direct current line bank, two ends of the direct current line bank are respectively provided with an inverter plug connector used for connecting an energy storage bidirectional inverter and a battery cluster plug used for connecting a battery cluster, the direct current line bank is provided with a direct current control element, and the BMS is electrically connected with the direct current control element; the alternating current module comprises an alternating current wire bar, two ends of the alternating current wire bar are respectively provided with an inverter wiring terminal bar used for connecting an energy storage bidirectional inverter and a commercial power wiring terminal bar used for connecting commercial power, the alternating current wire bar is provided with an alternating current control component, and the BMS is electrically connected with the alternating current control component. The energy storage device has the advantages that the wiring complexity of all the devices is reduced, and therefore the whole energy storage device is simplified.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-voltage distribution boxes, in particular to a high-voltage distribution box for energy storage. BACKGROUND

[0002] At present, high-voltage boxes in the energy storage field are evolved from the automobile industry, and the high-voltage boxes on automobiles are all direct-current systems without alternating-current systems, so the high-voltage boxes used in the current energy storage are also all direct-current systems. The main components of the high-voltage box are as follows: a direct-current circuit breaker, a direct-current fuse, a direct-current relay, a Hall sensor, a BMS, etc. The function of the high-voltage box is to connect and disconnect the connection between the battery and the load.

[0003] However, the application of energy storage is different from that of the automobile industry in that the energy storage has both a direct-current system and an alternating-current system. The general principle of the energy storage is that the energy storage can convert the direct-current electricity of the battery into alternating-current electricity for users to use through a bidirectional inverter, and can also convert the alternating-current electricity of the users into direct-current electricity to charge the battery. Therefore, the energy storage is an integrated body of the direct-current system and the alternating-current system. The high-voltage box is an important electrical component in the energy storage cabinet, and at present, the high-voltage box used in the industry is still a high-voltage box with only a direct-current system. The alternating-current system is arranged in the energy storage cabinet (energy storage container) separately. The circuit breaker of the alternating-current system needs to provide power supply for the direct-current system, and the on-off state of the circuit breaker of the alternating-current system also needs to be fed back to the BMS of the direct-current system. Therefore, there are many connection wires between the direct-current system and the alternating-current system. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the application provides a high-voltage distribution box for energy storage, which has the advantages of reducing the complexity of the wiring of each device and simplifying the entire energy storage device.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A high-voltage distribution box for energy storage, comprising a direct-current module and an alternating-current module, and a BMS for controlling the direct-current module and the alternating-current module;

[0007] The direct-current module comprises a direct-current line row, and the two ends of the direct-current line row are respectively provided with an inverter plug-in part for connecting a bidirectional inverter of the energy storage and a battery cluster plug for connecting a battery cluster. Direct-current control components are arranged on the direct-current line row, and the BMS is electrically connected with the direct-current control components.

[0008] The alternating-current module comprises an alternating-current line row, and the two ends of the alternating-current line row are respectively provided with an inverter terminal block for connecting a bidirectional inverter of the energy storage and a power terminal block for connecting a power supply. Alternating-current control components are arranged on the alternating-current line row, and the BMS is electrically connected with the alternating-current control components.

[0009] The technical scheme is realized, so that the high-voltage distribution box can be connected to the commercial power through the commercial power connection terminal, and then connected to the energy storage bidirectional inverter through the inverter connection terminal, and then connected to the DC line through the inverter plug-in connector, and then connected to the battery cluster through the battery cluster plug at the other end of the DC line, so that the AC power of the commercial power is transmitted to the bidirectional inverter through the AC module, and the AC power is converted into DC power and transmitted to the battery cluster for storage through the distribution box DC module, and vice versa, so as to complete the energy storage and power supply effect. The on-off and switching of the DC side and the AC side are controlled and adjusted by the BMS in the distribution box, so that the bidirectional communication and control between the entire energy storage components are realized through the high-voltage distribution box, thereby reducing the complexity of wiring between various devices.

[0010] As a preferred scheme of the present application, the DC control component includes a DC side electromagnetic relay arranged on the DC line, and one of the DC side electromagnetic relays is connected in parallel with a protection branch.

[0011] The technical scheme is realized, so that the battery cluster is protected by the protection branch during the automatic control of the BMS, so as to prevent line damage caused by short circuit overload and the like.

[0012] As a preferred scheme of the present application, the protection branch includes a protection resistor and a protection electromagnetic relay.

[0013] The technical scheme is realized, so that the BMS can control the on-off of the protection branch, thereby ensuring the protection effect.

[0014] As a preferred scheme of the present application, one of the lines of the DC line is provided with a fuse.

[0015] The technical scheme is realized, thereby further playing a protection effect on the line equipment.

[0016] As a preferred scheme of the present application, the AC control component includes an AC side electromagnetic relay arranged on the AC side, and the AC side electromagnetic relay is electrically connected with the BMS.

[0017] The technical scheme is realized, so that the on-off of the AC module is controlled by the BMS.

[0018] As a preferred scheme of the present application, the AC line is provided with an energy storage meter.

[0019] The technical scheme is realized, thereby being used for counting input and output electric energy.

[0020] As a preferred scheme of the present application, the distribution box is further provided with a water immersion sensor connected with the BMS.

[0021] The above technical solution is used for monitoring whether water vapor or other reasons cause water accumulation in the distribution box, and causes the high-voltage distribution box to be prone to short circuit.

[0022] As a preferred solution of the present application, the BMS is further connected with an auxiliary device plug connector for connecting auxiliary devices.

[0023] The above technical solution is used for communication or I / O control of auxiliary devices such as liquid cooling machines, fire-fighting host machines, dehumidifiers and the like through the auxiliary device plug connector, thereby reducing the occurrence of complicated and messy wire harnesses.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. Even if the high-voltage distribution box can be connected to the mains through the mains terminal, after being connected to the energy storage bidirectional inverter through the inverter terminal, the energy storage bidirectional inverter and the DC line are connected through the inverter plug, and the other end of the DC line is connected to the battery cluster through the battery cluster plug, so that the AC power of the mains is transmitted to the bidirectional inverter through the AC module, and the AC power is converted into DC power and transmitted to the battery cluster through the distribution box DC module for storage, and vice versa. The AC power is output to the AC side of the mains, thereby achieving the effect of energy storage and power supply. The on-off and switching of the DC side and the AC side are controlled and adjusted by the BMS in the distribution box, so that the entire energy storage assembly is connected and controlled through the high-voltage distribution box to reduce the complexity of wiring between devices. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0028] Figure 2 is a schematic diagram of the application of the embodiment of the present application.

[0029] Figure 3 is a schematic diagram of the BMS connection in the embodiment of the present application.

[0030] Fig. 1 is a high-voltage distribution box; 2 is a DC module; 21 is a DC line; 22 is an inverter plug; 23 is a battery cluster plug; 24 is a DC side electromagnetic relay; 25 is a protection resistor; 26 is a protection electromagnetic relay; 27 is a fuse; 28 is a battery cluster plug; 3 is an AC module; 31 is an AC line; 32 is an inverter terminal block; 33 is a power terminal block; 34 is an AC side electromagnetic relay; 35 is an energy storage meter; 4 is a BMS; 5 is a water immersion sensor; 6 is an auxiliary equipment plug. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The present application is further described in detail.

[0032] The present application discloses a kind of energy storage high-voltage distribution box 1. Refer to Figure 1 , energy storage high-voltage distribution box 1 includes DC module 2 and AC module 3, and BMS 4 for controlling DC module 2 and AC module 3.

[0033] DC module 2 includes DC line 21, DC line 21 two ends are respectively provided with inverter plug 22 for connecting energy storage bidirectional inverter and battery cluster plug 28 for connecting battery cluster, DC control component is arranged on DC line 21, and BMS 4 is electrically connected with DC control component.

[0034] AC module 3 includes AC line 31, AC line 31 two ends are respectively provided with inverter terminal block 32 for connecting energy storage bidirectional inverter and power terminal block 33 for connecting power, AC control component is arranged on AC line 31, and BMS 4 is electrically connected with AC control component. That is, after high-voltage distribution box 1 can be connected to power through power terminal, after being connected to energy storage bidirectional inverter through inverter terminal, energy storage bidirectional inverter and DC line 21 are quickly connected through inverter plug 22, then the other end of DC line 21 is connected to battery cluster through battery cluster plug 28, so that AC power of power is transmitted to bidirectional inverter through AC module 3, so that AC power is converted into DC power and is delivered to battery cluster storage through DC module 2 of distribution box 1, and vice versa, AC power is output to AC side of power, so that the effect of energy storage power supply is achieved. The on-off and switching of DC side and AC side are controlled and adjusted by BMS 4 in distribution box, so that bidirectional communication and control between entire energy storage assembly are realized through high-voltage distribution box 1, to reduce the complexity of wiring between various devices.

[0035] The direct current control component includes a direct current side electromagnetic relay 24 arranged on the direct current line row 21, and the direct current side electromagnetic relay 24 is connected with the BMS 4, so that the BMS 4 automatically controls the on-off of the direct current line row 21. One of the direct current side electromagnetic relays 24 is connected in parallel with a protection branch. In the process that the battery cluster is automatically controlled to be on-off by the BMS 4, the protection branch is protected to prevent the line from being damaged due to short circuit overload and the like. The protection branch includes a protection resistor 25 and a protection electromagnetic relay 26, and the protection electromagnetic relay 26 is electrically connected with the BMS 4, so that the BMS 4 can control the on-off of the protection branch, thereby ensuring the protection effect. The fuse 27 is arranged on one of the lines of the direct current line row 21, thereby further playing the effect of protecting the line equipment.

[0036] The alternating current control component includes an alternating current side electromagnetic relay 34, and the alternating current side electromagnetic relay 34 is electrically connected with the BMS 4, that is, the on-off of the alternating current module 3 is controlled by the BMS 4. The energy storage meter 35 is arranged on the alternating current line row 31, and is used for counting input electric energy and output electric energy.

[0037] The distribution box is further provided with a water immersion sensor 5 connected with the BMS 4. The water immersion sensor 5 is used for monitoring whether water accumulation occurs in the distribution box due to water vapor and the like, so that the high-voltage distribution box 1 is prone to short circuit.

[0038] The BMS 4 is further connected with an auxiliary equipment plug 6 used for connecting auxiliary equipment. The auxiliary equipment such as a liquid cooling machine, a fire-fighting host, a dehumidifier and the like is communicated or I / O controlled through the auxiliary equipment plug 6, thereby reducing the occurrence of the complicated and messy line harness.

[0039] The implementation principle of the energy storage high-voltage distribution box 1 in the embodiment is as follows: the high-voltage distribution box 1 can be connected with commercial power through the commercial power connection terminal, connected with the energy storage bidirectional inverter through the inverter connection terminal, connected between the energy storage bidirectional inverter and the direct current line row 21 through the inverter plug 22, and connected with the battery cluster through the battery cluster plug 28 at the other end of the direct current line row 21, so that the commercial alternating current is transmitted to the bidirectional inverter through the alternating current module 3, the alternating current is converted into direct current, and the direct current is transmitted to the battery cluster through the distribution box direct current module 2 for storage, and vice versa, so that the effect of energy storage and power supply is achieved. The on-off and switching of the direct current side and the alternating current side are controlled and adjusted by the BMS 4 in the distribution box, so that the bidirectional communication and control among the entire energy storage components are realized through the high-voltage distribution box 1, and the complexity of the connection among the devices is reduced.

[0040] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An energy storage high voltage distribution box, characterized by: The power distribution box comprises a direct current module (2), an alternating current module (3), and a BMS (4) for controlling the direct current module (2) and the alternating current module (3); The direct current module (2) comprises a direct current busbar (21), two ends of the direct current busbar (21) are respectively provided with an inverter plug (22) for connecting a bidirectional energy storage inverter and a battery cluster plug (28) for connecting a battery cluster, direct current control components are arranged on the direct current busbar (21), and the BMS (4) is electrically connected with the direct current control components; The alternating current module (3) comprises an alternating current busbar (31), two ends of the alternating current busbar (31) are respectively provided with an inverter terminal block (32) for connecting the bidirectional energy storage inverter and a power terminal block (33) for connecting commercial power, alternating current control components are arranged on the alternating current busbar (31), and the BMS (4) is electrically connected with the alternating current control components.

2. The energy storage high voltage distribution box of claim 1, wherein: The direct current control components comprise direct current side electromagnetic relays (24) arranged on the direct current busbar (21), and one of the direct current side electromagnetic relays (24) is connected in parallel with a protection branch.

3. The energy storage high voltage distribution box of claim 2, wherein: The protection branch comprises a protection resistor (25) and a protection electromagnetic relay (26).

4. The energy storage high voltage distribution box of claim 1, wherein: An electric fuse (27) is arranged on one line of the direct current busbar (21).

5. The energy storage high voltage distribution box of claim 1, wherein: The alternating current control components comprise alternating current side electromagnetic relays (34), and the alternating current side electromagnetic relays (34) are electrically connected with the BMS (4).

6. The energy storage high voltage distribution box of claim 1, wherein: An energy storage meter (35) is arranged on the alternating current busbar (31).

7. The energy storage high voltage distribution box of claim 1, wherein: The power distribution box is further provided with a water immersion sensor (5) connected with the BMS (4).

8. The energy storage high voltage distribution box of claim 1, wherein: The BMS (4) is further connected with an auxiliary equipment plug (6) for connecting auxiliary equipment.

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