High-voltage control box and energy storage equipment

Abstract

The utility model relates to the technical field of energy storage, and provides a high-voltage control box and energy storage equipment. The high-voltage control box comprises a box body, two control loops, two battery management units, a power supply and a power supply switch. The box body has an accommodating cavity; the two control loops are respectively used for controlling the working states of the two battery clusters; the power supply is arranged in the accommodating cavity, and the power supply switch is arranged on the box body and electrically connected with the power supply; the two battery management units are arranged in the accommodating cavity and are electrically connected with the two control loops and the power supply respectively; wherein the number of the power supply and the number of the power supply switch are both one, and the power supply is electrically connected with the two battery management units. One power supply and one power supply switch supply power to the two battery management units at the same time, the volume of the containing cavity occupied by the power supply can be reduced, the area occupied by the power supply switch on the box body can be reduced, the number of used devices is reduced, the production cost occupied by the devices is reduced, and the aesthetic feeling of an external panel of the box body is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a high-voltage control box and an energy storage device. BACKGROUND

[0002] In the related art, the high-voltage control box is a core component in the energy storage device, and is used to realize functions such as charge and discharge control, protection, and monitoring of the energy storage device. Each battery cluster needs to be equipped with a high-voltage control box, and the space utilization rate is low. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the embodiments of the present application aim to provide a high-voltage control box and an energy storage device, which can improve the space utilization rate and reduce the production cost. The high-voltage control box comprises:

[0004] a box body having a receiving cavity;

[0005] two control circuits for controlling the working states of two battery clusters, respectively;

[0006] a power supply and a power supply switch, the power supply is arranged in the receiving cavity, and the power supply switch is arranged on the box body and electrically connected with the power supply;

[0007] two battery management units arranged in the receiving cavity and electrically connected with the two control circuits and the power supply, respectively;

[0008] wherein the power supply and the power supply switch are one, and the power supply is electrically connected with the two battery management units, respectively.

[0009] In some embodiments, the two battery management units are detachably arranged on the box body.

[0010] In some embodiments, the high-voltage control box further comprises two groups of input interfaces, two groups of output interfaces, and a power supply interface; each control circuit is electrically connected with the corresponding input interface and output interface; the power supply interface is electrically connected with the power supply and is used to connect an external power supply.

[0011] wherein the box body has a first end plate at one end along a first direction, and the power supply interface, the power supply switch, the input interface, and the output interface are arranged on the first end plate.

[0012] In some embodiments, the control circuit comprises a device group arranged in the receiving cavity.

[0013] wherein the two groups of device groups of the two control circuits are arranged along the first direction.

[0014] In some embodiments, the high-voltage control box further comprises:

[0015] two circuit breakers, including a circuit breaker body and a control handle, the circuit breaker body being electrically connected to the control circuit and located in the accommodating cavity; the circuit breaker body being located between the device group and the output interface;

[0016] wherein the two circuit breaker bodies are arranged side by side in the second direction in the accommodating cavity, and the two control handles are arranged side by side in the second direction on the first end plate.

[0017] In some embodiments, the two circuit breaker bodies are arranged close to the first end plate, and the two device groups are located on the side of the circuit breaker bodies away from the first end plate in the first direction.

[0018] In some embodiments, the box has a second end plate opposite the other end of the first end plate in the first direction, and the two battery management units are arranged side by side on the second end plate in the second direction.

[0019] In some embodiments, the device group includes a fuse, a first contactor, a shunt, and a second contactor.

[0020] The fuse and the first contactor are arranged in sequence in the second direction and connected by a copper bar, one end of the fuse is connected to the positive pole of the input interface by a copper bar, and the other end of the first contactor is connected to the positive pole of the output interface by a copper bar.

[0021] The shunt and the second contactor are arranged in sequence in the second direction and connected by a copper bar, one end of the shunt is connected to the negative pole of the input interface by a copper bar, and the other end of the second contactor is connected to the negative pole of the output interface by a copper bar.

[0022] wherein the first direction, the second direction, and the up-down direction are perpendicular to each other.

[0023] In some embodiments, the high-voltage control box further comprises two pre-charge circuits arranged in the accommodating cavity, the pre-charge circuits being electrically connected to the control circuit; the pre-charge circuit includes a pre-charge relay, and the pre-charge relay is connected in parallel with the first contactor.

[0024] wherein the two pre-charge relays are arranged on one side of the two device groups in the second direction.

[0025] The high-voltage control box provided in the embodiments of the present application can reduce the volume of the accommodating cavity occupied by the power supply, reduce the area of the power switch on the box body, reduce the number of devices used, reduce the production cost of the devices occupied, improve the aesthetics of the external panel of the box body, and reduce the weight of the high-voltage control box. Moreover, two high-voltage control boxes are combined into one, so that one high-voltage control box can control two battery clusters, the number of high-voltage control boxes in the energy storage device is reduced, and the production cost is reduced.

[0026] An energy storage device comprises:

[0027] A battery cluster;

[0028] The high-voltage control box described in any one of the embodiments of the present application;

[0029] Two battery clusters are connected to two control circuits of the same high-voltage control box.

[0030] The energy storage device provided in the embodiments of the present application comprises the high-voltage control box described above, and has the same beneficial effects as the high-voltage control box. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a structural schematic diagram of the high-voltage control box in an embodiment of the present application;

[0032] Figure 2 FIG. 2 is a structural schematic diagram of the high-voltage control box shown in FIG. 1 from another perspective; Figure 1 FIG. 3 is a partial structural schematic diagram of the high-voltage control box shown in FIG. 1, in which the structure in the accommodating cavity is shown;

[0033] Figure 3 FIG. 4 is a structural schematic diagram of the high-voltage control box shown in FIG. 1 from another perspective; Figure 2 FIG. 5 is a structural schematic diagram of the high-voltage control box shown in FIG. 1 from another perspective;

[0034] Figure 4 FIG. 6 is a circuit diagram of the battery management unit, the power supply, and the power switch in the high-voltage control box in an embodiment of the present application.

[0035] REFERENCE SIGNS

[0036] 100, high-voltage control box; 10, box body; 11, first end plate; 12, second end plate; 13, first side plate; 14, second side plate; 10a, containing cavity; 20, control circuit; 21, device group; 211, fuse; 212, first contactor; 213, shunt; 214, second contactor; 30, power supply; 40, power supply switch; 50, battery management unit; 60, input interface; 70, output interface; 80, power supply interface; 91, circuit breaker main body; 92, control handle; 101, copper bar; 110, pre-charge circuit; 111, pre-charge relay; 112, pre-charge resistor; X, first direction; Y, second direction; 120, indicator light; 130, communication interface; 140, communication power supply interface. DETAILED DESCRIPTION

[0037] The embodiments of the present application will be further described below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0038] It should be noted that in the embodiments of the present application, the orientation or positional relationship of "first direction", "second direction" and the like is based on the orientation or positional relationship shown in the drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The present application will be further described below in conjunction with the accompanying drawings and specific embodiments. In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above-mentioned terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] In the embodiments of the present application, unless otherwise explicitly specified and limited, the "first feature" on the "second feature" can be that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium.

[0041] In the description of the specification, the description referring to the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one of the embodiments or examples of the present application. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0042] In the related art, the high-voltage control box is a core component in the energy storage device, which is used to realize the functions of charge and discharge control, protection and monitoring of the energy storage device. Each battery cluster needs to be equipped with a high-voltage control box, and the space utilization rate is low.

[0043] Therefore, in view of the above Figures 1-4 The embodiments of the present application provide a high-voltage control box 100, which can improve the space utilization and reduce the production cost.

[0044] The high-voltage control box 100 comprises a box body 10, two control circuits 20, a power supply 30 and a power supply switch 40. The box body 10 has a containing cavity 10a; the two control circuits 20 are respectively used to control the working states of two battery clusters; the power supply 30 is arranged in the containing cavity 10a, and the power supply switch 40 is arranged on the box body 10 and electrically connected with the power supply 30; two battery management units 50 are arranged in the containing cavity 10a and electrically connected with the two control circuits 20 and the power supply 30 respectively, and the battery management unit 50 is used to monitor the state of the battery cluster and control the charging or discharging of the battery cluster; wherein the power supply 30 and the power supply switch 40 are one, the power supply 30 is electrically connected with the two battery management units 50. The power supply switch 40 is used to control the power supply 30 to be turned on or turned off. The power supply 30 is used to supply power to the two battery management units 50 at the same time.

[0045] The high-voltage control box 100 realizes corresponding charge and discharge control, protection and detection of the battery cluster through the control circuit 20. The electric energy from multiple battery clusters can be integrated and distributed to the load according to the demand. The control circuit 20 is used to control the connection and disconnection of the battery cluster and the external load, and each high-voltage control box 100 is configured with two control circuits 20 to control two battery clusters respectively. The external load can be a PCS (Process Control System) and the like.

[0046] The battery management unit 50 can collect corresponding parameters such as temperature, current and voltage in the external battery cluster, and control the real-time direct current charging or discharging process of the external battery cluster after analysis in the battery management unit 50. Exemplarily, the battery management unit 50 can be a BMS (Battery Management System), which can intelligently manage and maintain each battery cell, prevent overcharging and overdischarging of the battery, prolong the service life of the battery, and monitor the state of the battery.

[0047] The power supply 30 is used to provide power to the battery management unit 50, and the power supply 30 and the battery management unit 50 can be connected or disconnected through the power supply switch 40 to control whether the power supply 30 supplies power to the battery management unit 50. The power supply switch 40 is arranged on the box body 10, and a user can directly operate and control the power supply switch 40 to turn on or off the power supply switch 40.

[0048] The high-voltage control box 100 provided by the embodiment of the application can supply power to two battery management units 50 through one power supply 30 and one power supply switch 40, thereby reducing the volume of the accommodating cavity 10a occupied by the power supply 30, reducing the area of the box body 10 occupied by the power supply switch 40, reducing the number of devices used, reducing the production cost occupied by the devices, improving the aesthetics of the external panel of the box body 10, and reducing the weight of the high-voltage control box 100. Two high-voltage control boxes 100 are combined into one, so that one high-voltage control box 100 can control two battery clusters, thereby reducing the number of high-voltage control boxes 100 in the energy storage device and reducing the production cost.

[0049] Exemplarily, please refer to Figure 1 The high-voltage control box 100 further comprises a power supply interface 80 arranged on the box body 10 and used to connect an external power supply and the power supply 30. The external power supply is connected after the power supply interface 80, and can provide power to the battery management unit 50.

[0050] In some embodiments, please refer to Figure 1 The high-voltage control box 100 further comprises two groups of input interfaces 60 and two groups of output interfaces 70; each control loop 20 is electrically connected to a corresponding input interface 60 and output interface 70; wherein the box body 10 has a first end plate 11 at one end along the first direction X, and the power supply switch 40, the input interface 60 and the output interface 70 are arranged on the first end plate 11. The two groups of input interfaces 60 can be connected to two battery clusters respectively, and the two groups of output interfaces can be connected to two external loads. The input interface comprises two power connection ports of positive and negative poles, and the output interface comprises two power connection ports of positive and negative poles.

[0051] In this way, the power supply switch 40, the two sets of input interfaces 60 and the two output interfaces 70 are all arranged on the first end plate 11, which is convenient for users to operate in daily life. Compared with being arranged on different panels, the total length of the high-voltage control box 100 along the first direction X can be reduced, and the space occupied by the high-voltage control box 100 can be reduced.

[0052] Exemplarily, the two battery management units 50 are detachably arranged on the box body, for example, are detachably arranged on the second end plate 12.

[0053] Exemplarily, the power supply interface 80 is also arranged on the first end plate 11.

[0054] Exemplarily, referring to Figure 1 , the high-voltage control box 100 further comprises two indicator lights 120 arranged on the first end plate 11, which are used to display the running and fault states of the two battery clusters.

[0055] Exemplarily, referring to Figure 1 , the high-voltage control box 100 further comprises a plurality of communication interfaces 130 arranged on the first end plate 11, which are used to connect with external control devices to perform data transmission or monitoring.

[0056] Exemplarily, referring to Figure 1 , the high-voltage control box 100 further comprises two communication power supply interfaces 140 arranged on the first end plate 11, which are used to perform data transmission or monitoring and supply power to external control devices.

[0057] In some embodiments, referring to Figure 1 , the high-voltage control box 100 further comprises a power supply interface 80 arranged on the first end plate 11 and electrically connected with the power supply 30, which is used to connect external power supply. The power supply interface 80 is arranged on the first end plate 11, which is convenient for users to operate in daily life.

[0058] In some embodiments, referring to Figure 2 , the control loop 20 comprises a device group 21 arranged in the accommodation cavity 10a; wherein one of the two device groups 21 of the control loop 20 is arranged along the first direction X. Arranging the two device groups 21 along the first direction X can improve the compactness of the structure arrangement in the accommodation cavity 10a. Exemplarily, one of the two device groups 21 of the control loop 20 is arranged along the first direction X in sequence and at intervals.

[0059] Exemplarily, referring to Figures 2-3The device group 21 comprises a fuse 211, a first contactor 212, a shunt 213 and a second contactor 214; the fuse 211 and the first contactor 212 are arranged in sequence along the second direction Y and connected by the copper bar 101, one end of the fuse 211 is connected to the positive pole of the input interface 60 through the copper bar, and the other end of the first contactor 212 is connected to the positive pole of the output interface 70 through the copper bar; the shunt 213 and the second contactor 214 are arranged in sequence along the second direction Y and connected by the copper bar 101, one end of the shunt 213 is connected to the negative pole of the input interface 60 through the copper bar, and the other end of the second contactor 214 is connected to the negative pole of the output interface 70 through the copper bar; wherein the first direction X, the second direction Y and the up-down direction are perpendicular to each other. It can be understood that the devices in the device groups 21 of the two control circuits 20 are the same and arranged in the same way.

[0060] The fuse 211 is used for over-current short-circuit protection of the control circuit 20, and the first contactor 212 and the second contactor 214 can be turned on and off by the battery management unit 50 to control the control circuit 20. The shunt 213 is used for real-time monitoring of the charge and discharge current of the battery cluster.

[0061] The two device groups 21 of the two control circuits 20 are arranged along the first direction X, the fuse 211 and the first contactor 212 in each device group 21 are arranged in sequence along the second direction Y, the shunt 213 and the second contactor 214 are arranged in sequence along the second direction Y, and the length direction of the fuse 211, the first contactor 212, the shunt 213 and the second contactor 214 is located in the second direction Y, so that the device groups 21 of the two control circuits 20 can be arranged compactly in the accommodation cavity 10a, the space of the control circuit in the accommodation cavity 10a is reduced, the volume of the high-voltage control box 100 is reduced, the length of the required copper bar 101 is reduced, and the production cost is further reduced.

[0062] Exemplarily, the box body 10 has a first side plate 13 and a second side plate 14 on both sides along the first direction X, wherein the first side plate 13 is close to the input interface 60, and the second side plate 14 is close to the output interface 70. The two device groups 21 of the two control circuits 20 are arranged close to the first side plate 13.

[0063] Exemplarily, the power supply 30 is arranged on the second side plate 14.

[0064] Further, please refer to Figure 2The fuses 211 and the shunt 213 in the device group 21 away from the first end plate 11 and the fuses 211 and the shunt 213 in the device group 21 close to the first end plate 11 are sequentially arranged along the first direction X and gradually increase in distance from the first side plate 13 along the first direction X; the two groups of input interfaces 60 are sequentially arranged along the second direction Y; each group of input interfaces 60 includes two power connection ports of a positive electrode and a negative electrode, and the two power connection ports of each group of input interfaces 60 are sequentially and spaced apart along the second direction Y; along the up-down direction, the height of each power connection port decreases sequentially. In this way, the copper bars can be arranged conveniently, the length of the copper bars used can be reduced, and the use cost can be reduced. Further, the four power connection ports are sequentially and spaced apart along the second direction Y on the first end plate 11 and sequentially decrease in height along the up-down direction, the positions of the four power connection ports on the first end plate 11 can be staggered, the design length of the first end plate 11 along the second direction Y can be reduced, and each power connection terminal can have an operation space around it, so that the connection operation of the battery cluster and the power connection port can be facilitated.

[0065] In some embodiments, referring to Figure 2 The high-voltage control box 100 further includes two pre-charging circuits 110 arranged in the accommodation cavity 10a, and the pre-charging circuits 110 are electrically connected to the control circuit 20; the pre-charging circuit 110 includes a pre-charging relay 111, and the pre-charging relay 111 is connected in parallel with the first contactor 212; wherein the two pre-charging relays 111 are arranged on one side of the two device groups 21 along the second direction Y.

[0066] The pre-charging circuit 110 is used to protect the device group 21 in the control circuit 20 and reduce the possibility of damage to the device group 21 in the control circuit 20 caused by excessive current at the moment of direct power-on. The two pre-charging relays 111 are arranged on one side of the device group 21 along the second direction Y, which can reduce the space length occupied by the device group 21 and the pre-charging relay 111 along the first direction X, reduce the space volume occupied by the device group 21 and the pre-charging relay 111, and further reduce the length of the high-voltage control box 100.

[0067] For example, the two pre-charging relays 111 are arranged close to the second side plate 14.

[0068] In some embodiments, referring to Figure 2The pre-charging circuit 110 further comprises a pre-charging resistor 112 connected in series with the pre-charging relay 111; one of the pre-charging relays 111 is arranged along the first direction X, and the other pre-charging relay 111 is arranged along the second direction Y, and the pre-charging resistor 112 is arranged in the space formed by the two device groups 21 and the two pre-charging relays 111. The pre-charging resistor 112 can limit the current of the control circuit 20, thereby reducing the possibility of damage to the first contactor 212 in the two control circuits 20 caused by excessive current at the moment of direct power-on.

[0069] In this way, the pre-charging relays 111 and the pre-charging resistor 112 can make full use of the space between the two device groups 21 and the second end plate 14 in the accommodation cavity 10a, thereby reducing the overall space occupied by the two device groups 21, the two pre-charging relays 111 and the pre-charging resistor 112.

[0070] In some embodiments, referring to Figure 2 The high-voltage control box 100 further comprises two circuit breakers, each comprising a circuit breaker body 91 and a control handle 92, the circuit breaker body 91 is electrically connected to the control circuit 20 and located in the accommodation cavity 10a, and the control handle 92 is in control connection with the circuit breaker body 91; the circuit breaker body 91 is located between the device group 21 and the output interface 70; and the two circuit breaker bodies 91 are arranged side by side along the second direction Y in the accommodation cavity 10a, and the two control handles 92 are arranged side by side along the second direction Y on the first end plate 11.

[0071] During maintenance, the maintenance personnel can manually close the circuit breaker through the control handle 92, thereby disconnecting the connection between the battery cluster and the external load for the next operation. The two circuit breaker bodies 91 are arranged in the accommodation cavity 10a along the second direction Y, which can improve the compactness of the space arrangement in the accommodation cavity 10a. The two control handles 92 are arranged on the first end plate 11 along the second direction Y, which can correspond to the arrangement mode of the circuit breaker body 91.

[0072] In some embodiments, referring to Figure 2 The two circuit breaker bodies 91 are arranged close to the first end plate 11, and the two device groups 21 are located on the side of the circuit breaker body 91 away from the first end plate 11 along the first direction X. In this way, the distance between the circuit breaker body 91 and the control handle 92 can be reduced.

[0073] In some embodiments, referring to Figure 2The box 10 has a second end plate 12 at the other end of the first end plate 11 along the first direction X, and two battery management units 50 are arranged side by side on the second end plate 12 along the second direction Y. In this way, the two battery management units 50 are arranged on the second end plate 12, so that the volume of the accommodating cavity 10a can be fully utilized, and sufficient space is provided for other structures in the accommodating cavity 10a, such as the device group 21, the pre-charging relay 111 and the pre-charging resistor 112, and the like, so that the space in the accommodating cavity 10a can be fully utilized, and the required design size of the box 10 is reduced, and the production cost is reduced. For example, the box 10 is made of sheet metal, and reducing the volume of the box 10 can reduce the amount of sheet metal used.

[0074] The embodiments of the present application also provide an energy storage device, which comprises a battery cluster and the high-voltage control box 100 of any one of the embodiments of the present application; wherein the two battery clusters are connected to the two control circuits 20 of the same high-voltage control box 100. When the energy storage device has multiple battery clusters, the two battery clusters use the same high-voltage control box 100, so that the number of high-voltage control boxes 100 required by the entire energy storage device is reduced, the total length of the connection lines of the high-voltage control box 100 and the overall volume of the energy storage device are reduced, and the production cost is reduced.

[0075] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high voltage control cabinet characterized by, The high-voltage control box comprises: a box body having a containing cavity; two control circuits for controlling the working states of two battery clusters respectively; a power supply and a power supply switch, the power supply is arranged in the containing cavity, and the power supply switch is arranged on the box body and electrically connected with the power supply; two battery management units arranged in the containing cavity and electrically connected with the two control circuits and the power supply respectively; wherein the power supply and the power supply switch are one, and the power supply is electrically connected with the two battery management units respectively.

2. The high voltage control box of claim 1, wherein, The two battery management units are detachably arranged on the box body.

3. The high-voltage control box according to claim 1 or 2, characterized in that The high-voltage control box further comprises two groups of input interfaces, two groups of output interfaces and a power supply interface; each control circuit is electrically connected with the corresponding input interface and output interface; the power supply interface is electrically connected with the power supply for connecting external power supply; wherein the box body has a first end plate at one end along a first direction, and the power supply interface, the power supply switch, the input interface and the output interface are arranged on the first end plate.

4. The high voltage control box of claim 3, wherein, Each control circuit further comprises a device group arranged in the containing cavity; wherein the two device groups of the two control circuits are arranged along a first direction.

5. The high voltage control box of claim 4, wherein, The high-voltage control box further comprises: two circuit breakers including circuit breaker bodies and control handles, the circuit breaker bodies are electrically connected with the control circuits and located in the containing cavity; the circuit breaker bodies are located between the device groups and the output interfaces; wherein the two circuit breaker bodies are arranged side by side in the containing cavity along a second direction, and the two control handles are arranged side by side on the first end plate along the second direction.

6. The high voltage control box of claim 5, wherein, The two circuit breaker bodies are arranged close to the first end plate, and the two device groups are located on the side of the circuit breaker bodies away from the first end plate along the first direction.

7. The high voltage control box of claim 6, wherein, The box body has a second end plate at the other end relative to the first end plate along the first direction, and the two battery management units are arranged side by side on the second end plate along a second direction.

8. The high voltage control box of claim 4, wherein, The device group comprises a fuse, a first contactor, a shunt and a second contactor; the fuse and the first contactor are arranged in sequence along the second direction and connected by copper bars, one end of the fuse is connected with the positive pole of the input interface through copper bars, and the other end of the first contactor is connected with the positive pole of the output interface through copper bars; the shunt and the second contactor are arranged in sequence along the second direction and connected by copper bars, one end of the shunt is connected with the negative pole of the input interface through copper bars, and the other end of the second contactor is connected with the negative pole of the output interface through copper bars; wherein the first direction, the second direction and the up-down direction are perpendicular to each other.

9. The high voltage control box of claim 8, wherein, The high-voltage control box further comprises two pre-charging circuits arranged in the containing cavity, the pre-charging circuits are electrically connected with the control circuits; the pre-charging circuit comprises a pre-charging relay, and the pre-charging relay is connected in parallel with the first contactor respectively; wherein the two pre-charging relays are arranged on one side of the two device groups along the second direction.

10. An energy storage device, characterized by, The high-voltage control box further comprises: a battery cluster; the high-voltage control box of any one of claims 1 to 9; Two battery clusters are connected to two control circuits of the same high-voltage control box respectively.

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