CN222814252U - A high voltage control box - Google Patents
A high voltage control box Download PDFInfo
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- CN222814252U CN222814252U CN202421223254.5U CN202421223254U CN222814252U CN 222814252 U CN222814252 U CN 222814252U CN 202421223254 U CN202421223254 U CN 202421223254U CN 222814252 U CN222814252 U CN 222814252U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a high-voltage control box which comprises a box body, a power supply control unit and a charge-discharge transmission unit, wherein the power supply control unit and the charge-discharge transmission unit are arranged in the box body from top to bottom, the power supply control unit comprises a first shell, a switch power supply assembly and a main control board, which are arranged in the first shell, the charge-discharge transmission unit comprises a second shell, and a negative electrode circuit assembly and a positive electrode circuit assembly which are arranged in the second shell from bottom to top.
Description
Technical Field
The utility model belongs to the technical field of power equipment, and particularly relates to a high-voltage control box.
Background
At present, the battery energy storage system plays an irreplaceable role on the power generation side, the power transmission and distribution side and the user side, has wide application scene and is one of important means for solving the problem of renewable energy grid-connected consumption. The high-voltage control box of the energy storage system is mainly used for controlling the connection or disconnection of an electric main loop of the system, is a management unit of a battery cluster, provides charge and discharge control for the battery cluster, provides power-on control for an external high-voltage component, is responsible for collecting information such as voltage, current, temperature and the like of batteries in the battery cluster, packages and uploads the information, achieves the functions of overload short-circuit protection, high-voltage sampling, low-voltage control and the like of the batteries, and protects and monitors the operation of the high-voltage system.
How to design a high-voltage control box with compact structure, lower cost and smaller interference among electric elements is a problem which needs to be solved in the field at present.
Disclosure of Invention
The utility model aims to provide the high-voltage control box which is compact in structure, low in cost and small in interference among electrical components.
The high-voltage control box is used for energy storage equipment, the energy storage equipment comprises a temperature control system, a fire protection system, a UPS, a converter and at least one battery cluster, and the improvement is that:
The high-voltage control box comprises a box body, a power supply control unit and a charge-discharge transmission unit, wherein the power supply control unit and the charge-discharge transmission unit are arranged in the box body from top to bottom;
the power supply control unit comprises a first shell, a switch power supply assembly and a main control board;
the switch power supply component and the main control board are arranged in the first shell;
The charging and discharging transmission unit comprises a second shell, a negative electrode circuit assembly and a positive electrode circuit assembly, wherein the negative electrode circuit assembly and the positive electrode circuit assembly are arranged in the second shell from bottom to top;
the positive circuit component is used for converging N paths of positive current signals output by the energy storage device battery cluster, then dividing the N paths of positive current signals into M paths, leading out the M paths of positive current signals from the charge and discharge transmission unit, and transmitting the M paths of positive current signals to each corresponding converter module, wherein N is more than or equal to M is more than or equal to 2.
The power supply control unit and the charging transmission unit are divided into two parts which are arranged up and down by the box body, and the positive circuit component and the negative circuit component are also divided into two parts in the charging transmission unit, so that the high-voltage control box is compact in structure, more importantly, the mutual interference between electric elements between the power supply control unit and the charging transmission unit is reduced, meanwhile, signals of the positive circuit component and the negative circuit component in the charging transmission unit are mutually isolated, and wiring is more reasonable.
Further, the first switching power supply is used for converting alternating-current commercial power into direct-current power to supply power to a charger used in the energy storage equipment for active equalization, and the second switching power supply is used for converting high-voltage direct-current power of the battery cluster into 24V direct-current power to supply power to an electric element.
Because the battery cluster realizes capacity balance in an active charging mode, in order to provide the required direct current for each charger, the utility model adopts a first switching power supply for converting alternating current mains supply into direct current, and in order to ensure that some electrical elements in the energy storage device are not powered off when the mains supply is suddenly powered off, the utility model adopts a second switching power supply for converting high-voltage direct current of the battery cluster into 24V direct current, thereby improving the safety and reliability of the energy storage device.
The negative electrode circuit assembly comprises a negative electrode converging unit, M paths of negative electrode shunting units and a control acquisition circuit, wherein the negative electrode converging unit converges N paths of negative current signals of the energy storage device battery cluster and shunts the N paths of negative current signals to the M paths of negative electrode shunting units, N is more than or equal to M is more than or equal to 2, the control acquisition circuit comprises a plurality of control acquisition areas, and each control acquisition area is used for correspondingly acquiring current values and voltage values of the paths and controlling the on-off of the negative electrode circuit assembly;
The positive electrode circuit assembly comprises a converging unit, M positive electrode shunting units and a switching circuit board, wherein the positive electrode converging unit converges N positive current signals of the energy storage device battery cluster and shunts the N positive current signals to the M positive electrode shunting units, the switching circuit board carries out interface conversion on monitoring signals of each positive electrode shunting unit through a first type cable, the second type cable is connected with a control acquisition circuit, and then signal transmission of each positive electrode shunting unit is achieved.
Because the current of the battery cluster is overlarge, the current is converged through the converging unit and is split through the negative electrode splitting unit, and each path of split current corresponds to one converter module, so that the current is ensured not to deviate.
Further, the negative electrode shunt unit comprises a negative electrode contactor, a negative electrode transmission plate, a current monitoring device and an insulating support column;
The negative electrode contactor is used for controlling the on-off of the negative electrode shunt unit;
One end of the negative electrode transmission plate is connected with the negative electrode contactor, and the other end of the negative electrode transmission plate is connected with a first negative electrode interface corresponding to the path and is used for transmitting the energy of the path to a converter module corresponding to the path;
The current monitoring device is used for measuring the actual current of the path in real time and transmitting the battery value to a corresponding control acquisition area;
The insulation support column is used for insulating and supporting the negative electrode transmission plate in the second shell.
Further, the positive electrode shunt unit comprises a positive electrode contactor, a positive electrode transmission plate, a fuse and an insulating support column;
the positive electrode contactor is used for controlling the on-off of the positive electrode shunt unit;
One end of the positive electrode transmission plate is connected with the positive electrode contactor, and the other end of the positive electrode transmission plate is connected with a first positive electrode interface corresponding to the path and is used for transmitting the energy of the path to a converter module corresponding to the path;
the fuse is used for overcurrent and overheat protection of the path;
the insulating support column is used for insulating and supporting the positive electrode transmission plate in the second shell.
Further, the bus unit includes N first electrical connection pieces, a bus member, and M second electrical connection pieces;
One end of the first electric connecting piece is connected with the battery cluster assembly through a second negative electrode interface, the other end of the first electric connecting piece is connected with the bus piece, one end of the second electric connecting piece is connected with the bus piece, and the other end of the second electric connecting piece is connected with the negative electrode shunting unit.
Further, the box body comprises a box door and a cabinet body, wherein the box door is provided with a display screen;
Two supporting beams are respectively arranged in two opposite side walls on the cabinet body, the two supporting beams which are positioned above and have consistent heights are used for fixedly placing a power supply control unit, and the two supporting beams which are positioned below and have consistent heights are used for fixedly placing a charge and discharge transmission unit;
A first through hole for connecting with the total positive and the total negative of the battery clusters of the energy storage equipment and a second through hole for connecting with the electric equipment of the energy storage equipment are arranged on the side wall of the cabinet body, which is far away from one side of the cabinet body;
The bottom of the cabinet body is provided with a third through hole for realizing the connection between the charging and discharging transmission unit and the converter in the energy storage equipment.
Further, the first shell comprises a first shell with a first top cover and an open top, and the first top cover is installed at the open end of the first shell in a screw connection mode;
An AC interface, a main switch, an indicator light, a surge protector, a surge backup protector, an anode and cathode communication interface and a display screen interface are arranged on the side wall of the first shell, which is close to the box door of the box body;
The first shell is far away from the first interface, the second interface, the third interface, the UPS output interface, the UPS power supply interface and the fourth interface on the side wall of the box door of the box body;
and the other two side walls of the first shell are provided with heat dissipation holes.
Further, the second shell comprises a second top cover and a second shell with an open top, and the second top cover is installed at the open end of the second shell in a screw connection mode;
The side wall of the second shell, which is close to the box door of the box body, is provided with M converter communication interfaces, M first positive electrode interfaces, M first negative electrode interfaces and a cascade communication interface;
The side wall of the second shell, which is far away from the box door of the box body, is provided with N second anode interfaces and N second cathode interfaces;
Fans are arranged on the side walls of the two sides of the second shell.
Further, the negative electrode circuit component and the positive electrode circuit component are respectively fixed in the second shell in an insulating way through a tray component.
Drawings
FIG. 1 is a schematic diagram of a high pressure control box;
FIG. 2 is a schematic diagram II of a high pressure control box;
FIG. 3 is a schematic view of a cabinet in a high voltage control box;
fig. 4 is an external view of the power supply control unit;
FIG. 5 is a schematic diagram I of the interior of the power supply control unit;
FIG. 6 is a second schematic diagram of the interior of the power control unit;
fig. 7 is a diagram showing the external shape of the charge-discharge transmission unit;
fig. 8 is a second external view of the charge-discharge transmission unit;
FIG. 9 is a schematic diagram of a negative circuit assembly;
FIG. 10 is a schematic diagram of a positive electrode circuit assembly;
Fig. 11 is a schematic view of a tray assembly.
The reference numerals are as follows:
100-a high-pressure control box;
1-box body, 11-box door, 12-box body, 121-supporting beam, 13-display screen, 14-first through hole, 15-second through hole and 16-third through hole;
The power supply system comprises a 2-power supply control unit, a 21-switching power supply assembly, a 211-first switching power supply, a 212-second switching power supply, a 22-main control board, a 23-first shell, a 231-first top cover, a 232-first shell and 233-radiating holes, a 3-charge and discharge transmission unit, a 31-negative electrode circuit assembly, a 311-negative electrode current collecting unit, a 3111-first electric connection piece, a 3112-current collecting piece, a 3113-second electric connection piece, a 3114-insulating support seat, a 312-negative electrode current distribution unit, a 3121-negative electrode contactor, a 3122-negative electrode transmission board, a 3123-current monitoring device, a 3124-insulating support column, a 313-control acquisition circuit, a 3131-base board, a 3132-communication cable, a 3133-control acquisition area, a 32-positive electrode circuit assembly, a 321-positive electrode current collecting unit, a 322-positive electrode current distribution unit, a 3221-positive electrode contactor, a 3222-positive electrode transmission board, a 3223-fuse, a 323-switching circuit board, a 33-second shell, a 331-second top cover, a 332-second shell, a 34-top cover, a 34-insulating tray, a 35-wiring tray and a wire hole;
4-porous structure.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiment provides a high-voltage control box for energy storage equipment;
In this embodiment, the energy storage device includes at least one battery cluster, a converter, a fire protection system, a temperature control system, a UPS (uninterruptible power supply), and a high voltage tank;
The battery cluster comprises A battery packs arranged from top to bottom, each battery pack is connected in series, each battery pack comprises B large-capacity batteries which are arranged side by side and connected in series, each large-capacity battery is formed by connecting N battery monomers in parallel, N is more than or equal to 2, the N battery monomers are in the same electrolyte system, positive pole posts of the N battery monomers are connected and then serve as positive poles of the large-capacity battery, and negative pole posts of the N battery monomers are connected and then serve as negative poles of the large-capacity battery;
In other embodiments, a plurality of battery modules can be placed in the battery pack side by side, each battery module is formed by connecting N battery cells in parallel, the N battery cells do not share electrolyte, positive pole posts of the N battery cells are connected and then serve as positive poles of the battery modules, and negative pole posts of the N battery cells are connected and then serve as negative poles of the battery modules.
Taking an energy storage device formed by high-capacity batteries as an example, when the energy storage device is provided with one battery cluster, taking the positive electrode of the high-capacity battery at the rightmost side in the battery pack at the uppermost side of the battery cluster as the total positive electrode of the battery cluster, and taking the negative electrode of the high-capacity battery at the rightmost side in the battery pack at the lowermost side of the battery cluster as the total negative electrode of the battery cluster;
The total positive and the total negative of the battery cluster are connected with the current transformer through a high-voltage control box.
When the battery cluster is discharged, the direct current of the battery cluster needs to be converted into the alternating current of the power grid;
The current transformer can be a centralized current transformer or a group string current transformer, and because the charge and discharge current of the battery cluster is larger in the embodiment, various indexes such as voltage, current and cost are integrated, and meanwhile, in order to avoid the problems of bias current and even circulation when the centralized current transformer is used, the group string current transformer is selected in the embodiment;
in the embodiment, the temperature control system adopts active temperature control and comprises a heat exchange pipe network for exchanging heat with each large-capacity battery, a flow valve, a pump, a liquid cooler for providing circulating cooling medium for the heat exchange pipe network, and the like;
In some other embodiments, an air radiator can be further added as a passive temperature control device of the energy storage device, and the heat dissipation effect is better through combining the active liquid cooling and the air passive heat dissipation.
In the embodiment, the fire-fighting system is provided with two stages, and the first stage fire-fighting system is a system for actively treating at least one of the three modes of cooling, adsorption and ignition after the thermal runaway smoke of the high-capacity battery is led out according to a smoke pipeline (the thermal runaway smoke treated by the first stage fire-fighting system does not overflow the smoke pipeline);
The second-stage fire-fighting system is a system for inhibiting the overflowed thermal runaway smoke in a fire-fighting medium spraying mode after the thermal runaway smoke overflows the smoke pipeline.
In some other embodiments, the above two-stage fire protection system may be used separately and alone.
As shown in fig. 1 to 3, the high-voltage control box 100 includes a box body 1, a power supply control unit 2, and a charge-discharge transmission unit 3;
The box body 1 comprises a box door 11 and a box body 12, wherein the box door 11 is hinged on the box body 12, and a display screen 13 is arranged on the box door 11;
Two opposite side walls (two side walls in the left-right direction as shown in fig. 3) on the cabinet body 12 are respectively provided with two supporting beams 121, the two supporting beams 121 which are positioned above and have the same height are used for placing the power supply control unit 2, and the two supporting beams 121 which are positioned below and have the same height are used for placing the charge-discharge transmission unit 3;
The two side walls are provided with a porous structure 4 for heat dissipation;
As shown in fig. 3, a first through hole 14 for connecting with the total positive and the total negative of the battery clusters of the energy storage device and a second through hole 15 for connecting with the electric equipment of the energy storage device are arranged on the side wall, far away from the box door, of the cabinet body 12;
the electric equipment mainly comprises a charger in an active balance control circuit, a liquid cooling machine, a pump and a flow valve of a temperature control system, an igniter, a fan, an alarm, various sensors, a UPS and the like in a fire protection system;
the bottom of the cabinet 12 is provided with a third through hole 16 for realizing the connection between the charge and discharge transmission unit 3 and the converter in the energy storage device.
As shown in fig. 4 to 6, the power supply control unit 2 includes a switching power supply assembly 21, a main control board 22, and a first housing 23;
the switching power supply assembly 21 and the main control board 22 are installed in the first housing 23;
specifically, the switching power supply assembly 21 includes a first switching power supply 211 and a second switching power supply 212;
The first switch power supply 211 is used for converting Alternating Current (AC) mains supply introduced by an AC interface into Direct Current (DC) to be used for supplying power to a charger used by an active charge equalization circuit in the energy storage device, wherein the working mode is an AC-DC mode, and the number of the first power supplies is determined according to the number of the chargers used when the high-capacity battery in the energy storage device is subjected to active equalization control;
The second switching power supply 212 has a DC/DC mode to convert the high-voltage DC power of the battery cluster in the energy storage device into 24V DC power, and then supply power to the energy storage device and the electrical components in the high-voltage box requiring 24V DC power;
Specifically, the first housing 23 includes a first top cover 231 and a first outer shell 232 having an open top, and the first top cover 231 is mounted to the open end of the first outer shell 232 by means of screw connection;
The side wall of the first shell 232, which is close to the box door of the box body, is provided with an AC interface (A1), a main switch (A2), an indicator lamp (A3), a surge protector (A4), a surge backup protector (A5), a positive and negative electrode communication interface (A6) and a display screen interface (A7);
The AC interface (A1) is used for introducing alternating current of commercial power into the power supply control unit;
the surge protector (A4) has the function that alternating current introduced by the AC interface suddenly generates peak current or voltage due to external interference, so that the equipment is prevented from being damaged by the surge. The surge backup protector (A5) is used for protecting the surge protector.
The anode and cathode communication interface (A6) is used for realizing the communication between the charge and discharge transmission unit and the power supply control unit;
the display screen interface (A7) is used for being connected with a display of the box door;
The first shell 232 is far away from a first interface (B1), a second interface (B2), a third interface (B3), a UPS output interface (B4), a UPS power supply interface (B5) and a fourth interface (B6) on the side wall of the box door of the box body;
The number of the first interfaces (B1) is kept consistent with that of the first switching power supplies, and the first interfaces are used for leading out the electric signals of the first switching power supplies from the power supply control unit to be used by a charger in the active equalization control circuit;
The second interface (B2) is used for leading out an electric signal of the second switching power supply from the power supply control unit and then supplying the electric signal to electric devices in the fire-fighting system and electric devices in the high-voltage control box;
the third interface (B3) is used for directly leading the alternating current led in by the AC interface out of the power supply control unit and then providing the alternating current for a temperature control system in the energy storage equipment;
The UPS power supply interface (B5) is used for directly leading the alternating current led in by the AC interface (A1) out of the power supply control unit and then supplying the alternating current to the UPS for use;
The UPS output interface (B4) is used for supplying the electric signals of the UPS to electric devices in the fire protection system of the energy storage equipment through the fourth interface (B6).
The two side walls of the first shell 23 perpendicular to the box door of the box body are provided with heat dissipation holes;
the main control board is fixed at the bottom of the first shell through an insulating board;
The main control board mainly comprises a battery cluster charge and discharge control function, a temperature control system control function, a data acquisition and filtering function, various state monitoring and alarming functions, SOC, SOH, SOE parameter calculating functions and the like;
As shown in fig. 7 to 11, the charge-discharge transmission unit 3 includes a negative electrode circuit assembly 31, a positive electrode circuit assembly 32, and a second housing 33;
The positive electrode circuit component 32 and the negative electrode circuit component 31 are arranged in the second shell 33 from bottom to top;
The negative electrode circuit component 31 is used for converging N paths of negative current signals output by the total negative output of the battery cluster of the energy storage device, then dividing the N paths of negative current signals into M paths, and transmitting the M paths of negative current signals to each corresponding converter module after being led out of the charge-discharge transmission unit;
as shown in fig. 9, the negative electrode circuit assembly 31 includes a negative electrode converging unit 311, M negative electrode shunting units 312, and a control acquisition circuit 313, where the negative electrode converging unit 311 converges N paths of negative current signals of the energy storage device battery cluster, and then shunts the N paths of negative current signals to the M paths of negative electrode shunting units 312;
specifically, the negative bus unit 311 includes a first electrical connection tab 3111, a bus bar 3112, a second electrical connection tab 3113, and an insulating support 3114;
Since the number of the battery cells is N, the number of the first electric connectors 3111 is also N, one end of the first electric connector 3111 is connected to the battery cluster assembly through the second negative electrode interface, and the other end of the first electric connector 3111 is connected to the bus bar 3112;
The number of the second electric connection pieces 3113 is M, one end of the second electric connection piece 3113 is connected with the bus bar 3112, the other end of the second electric connection piece 3113 is connected with one end of the negative pole shunt unit 312, and the other end of each negative pole shunt unit 312 is used for being connected with a corresponding converter module;
The two ends of the bus bar 3112 and the insulating support base 3114 are supported in the second housing 33 in an insulating manner;
Specifically, the anode tap unit 312 includes an anode contactor 3121, an anode transmission plate 3122, a current monitoring device 3123, and an insulating support column 3124;
The parameter index of the negative electrode contactor 3121 at least needs to meet the requirement that the overcurrent size of the negative electrode contactor at least needs to meet the charge and discharge current/M which is larger than a battery cluster, and the pressure bearing size of the negative electrode contactor at least needs to meet the requirement that the pressure bearing size is larger than the maximum discharge voltage of the battery cluster;
One end of the negative electrode transmission plate 3122 is connected with the negative electrode contactor 3121, and the other end is used for being connected with a converter module corresponding to the path;
The current monitoring device 3123 is used for measuring the actual current of the loop in real time and transmitting the battery value to a control acquisition area corresponding to the loop on the control acquisition circuit, wherein the current monitoring device 3123 can adopt a Hall sensor or can also adopt a shunt;
the insulating support column 3124 is for insulating and supporting the anode transfer plate 3122 in the second housing 33;
The control acquisition circuit 313 comprises a substrate 3131, a communication cable 3132 and a plurality of control acquisition areas 3133 arranged on the substrate 3131, wherein each control acquisition area 3133 is used for correspondingly acquiring a current value and a voltage value of the circuit and controlling the on-off of the circuit;
As shown in fig. 10, the positive electrode circuit assembly 32 includes a positive electrode current collecting unit 321, an M-way positive electrode current dividing unit 322 and a switching circuit board 323, wherein the positive electrode current collecting unit 321 collects N-way positive current signals of the energy storage device battery cluster and then divides the N-way positive current signals into the M-way positive electrode current dividing unit 322;
The voltage signals monitored by the first type of cables in each path of positive electrode shunting unit 322 are subjected to interface conversion by the switching circuit board 323, and are connected with the control acquisition circuit by the second type of cables, so that the signal transmission of each path of positive electrode shunting unit is realized;
wherein, the structure and connection mode of the positive electrode confluence unit 321 used by the positive electrode circuit component 32 are basically consistent with those of the negative electrode confluence unit 311 used by the negative electrode circuit component 31;
Specifically, the positive electrode shunt unit 322 includes a positive electrode contactor 3221, a positive electrode transfer plate 3222, a fuse 3223, and an insulating support column 3124;
The positive contactor 3221 is used for controlling the on-off of the positive shunt unit 322, and the parameter index selection principle of the positive contactor 3221 is consistent with that of the negative contactor;
One end of the positive electrode transmission plate 3222 is connected with the positive electrode contactor, and the other end of the positive electrode transmission plate 3222 is connected with a converter module corresponding to the path;
fuse 3223 is used to protect the circuit from over-current and over-heat;
the insulating support column 3124 is used to support the positive electrode transfer plate 3222 in the second housing 33 in an insulating manner;
Specifically, the second housing 33 includes a second top cover 331 and a second housing 332 having an open top, and the second top cover 331 is mounted to the open end of the second housing 332 by means of screw connection;
The side wall of the second shell 33, which is close to the box door of the box body, is provided with M converter communication interfaces (C1), M first positive interfaces (C2), M first negative interfaces (C3) and a cascade communication interface (C4);
The power supply control system comprises a power supply control unit, a first positive electrode interface (C2), a first negative electrode interface (C3) and a cascade communication interface (C4), wherein the power supply control unit is connected with the power supply control unit, and the power supply control unit is connected with the power supply control unit;
The side wall of the second shell 33, which is far away from the box door of the box body, is provided with N second anode interfaces (D1) and N second cathode interfaces (D2);
The second positive electrode interface (D1) is used for connecting the positive electrode confluence unit with the total positive electrode of the battery cluster, and the second negative electrode interface (D2) is used for connecting the negative electrode confluence unit with the total negative electrode of the battery cluster;
In this embodiment, the negative electrode circuit assembly 31 is integrally fixed in the second housing 33 by means of a tray assembly 34 and is located above the positive electrode circuit assembly 32, and in order to ensure installation reliability and safety, as shown in fig. 11, the tray assembly 34 includes a fixed disc 341 for fixing the second housing 33 and an insulating plate 342 disposed above the fixed disc 341, and in order to enable signals such as voltage and current of the positive electrode circuit assembly to be transmitted to a control acquisition circuit of the negative electrode current assembly by using the shortest cable, threading holes 343 are formed in the areas of the fixed disc and the insulating plate corresponding to each negative electrode shunt unit for allowing the cables to pass through;
the positive electrode circuit component 32 is integrally fixed in the second shell 33 by means of a tray component 34, and is different from the negative electrode tray component in that threading holes are not required to be formed on a fixed disc and an insulating plate in the tray component used for the positive electrode circuit component;
Because the current passing through the positive electrode circuit component 32 and the negative electrode circuit component 31 in the second casing 33 is larger, in order to reduce the problem caused by overheating of the internal electrical components, fans 35 are respectively arranged on two side walls of the second casing 33, so that an air cooling channel is formed in the second casing, and the internal electrical components can be sufficiently cooled.
Claims (10)
1. The high-voltage control box is used for energy storage equipment, and the energy storage equipment comprises a temperature control system, a fire protection system, a UPS, a converter and at least one battery cluster;
The high-voltage control box is characterized by comprising a box body, a power supply control unit and a charging and discharging transmission unit;
the power supply control unit, the charge and discharge transmission unit are arranged in the box body from top to bottom;
the power supply control unit comprises a first shell, a switch power supply assembly and a main control board;
the switch power supply component and the main control board are arranged in the first shell;
The switching power supply component is used for supplying power to electric equipment in the energy storage equipment;
The main control board is used for monitoring the operation of the battery cluster, the temperature control system, the fire protection system and the UPS;
The charge-discharge transmission unit comprises a second shell, and a negative electrode circuit component and a positive electrode circuit component which are arranged in the second shell from bottom to top;
The negative circuit component is used for converging N paths of negative current signals output by the total negative output of the battery cluster of the energy storage device, then dividing the N paths of negative current signals into M paths, leading out the charging and discharging transmission units, and transmitting the M paths of negative current signals to the converter modules corresponding to each path;
the positive circuit component is used for converging N paths of positive current signals output by the energy storage device battery cluster, then dividing the N paths of positive current signals into M paths, leading out the M paths of positive current signals from the charge and discharge transmission unit, and transmitting the M paths of positive current signals to each corresponding converter module, wherein N is more than or equal to M is more than or equal to 2.
2. The high-voltage control box according to claim 1, wherein the switching power supply assembly comprises a first switching power supply and a second switching power supply, the first switching power supply is used for supplying power to a charger used for active equalization in the energy storage device by converting alternating-current mains supply into direct current, and the second switching power supply is used for supplying power to an electric component used for converting high-voltage direct current of the battery cluster into 24V direct current.
3. A high pressure control box as claimed in claim 1, wherein:
The negative electrode circuit component comprises a negative electrode converging unit, an M-path negative electrode shunting unit and a control acquisition circuit;
The negative electrode converging unit converges N paths of negative current signals of the battery cluster of the energy storage equipment and then shunts the N paths of negative current signals to the M paths of negative electrode shunting units, wherein N is more than or equal to M is more than or equal to 2;
Each control acquisition area is used for correspondingly acquiring the current value and the voltage value of the circuit and controlling the on-off of the negative circuit component;
the positive electrode circuit component comprises a converging unit, an M-path positive electrode shunting unit and a switching circuit board;
The positive electrode current collecting unit collects N paths of positive current signals of the energy storage device battery cluster, and then shunts the N paths of positive current signals to the M paths of positive electrode current shunting units;
The switching circuit board carries out interface conversion on the monitoring signals of each path of positive electrode shunting unit through the first type of cable, and is connected with the control acquisition circuit through the second type of cable, so that the signal transmission of each path of positive electrode shunting unit is realized.
4. A high voltage control box according to claim 3, wherein the negative electrode shunt unit comprises a negative electrode contactor, a negative electrode transmission plate, a current monitoring device and an insulating support column;
The negative electrode contactor is used for controlling the on-off of the negative electrode shunt unit;
One end of the negative electrode transmission plate is connected with the negative electrode contactor, and the other end of the negative electrode transmission plate is connected with a first negative electrode interface corresponding to the path and is used for transmitting the energy of the path to a converter module corresponding to the path;
The current monitoring device is used for measuring the actual current of the path in real time and transmitting the battery value to a corresponding control acquisition area;
The insulation support column is used for insulating and supporting the negative electrode transmission plate in the second shell.
5. The high voltage control box of claim 3, wherein the positive electrode shunt unit comprises a positive electrode contactor, a positive electrode transmission plate, a fuse and an insulating support column;
the positive electrode contactor is used for controlling the on-off of the positive electrode shunt unit;
One end of the positive electrode transmission plate is connected with the positive electrode contactor, and the other end of the positive electrode transmission plate is connected with a first positive electrode interface corresponding to the path and is used for transmitting the energy of the path to a converter module corresponding to the path;
the fuse is used for overcurrent and overheat protection of the path;
the insulating support column is used for insulating and supporting the positive electrode transmission plate in the second shell.
6. A high-voltage control box according to any one of claims 2 to 5, wherein the confluence unit comprises N first electric connection pieces, confluence pieces and M second electric connection pieces;
One end of the first electric connecting sheet is connected with the total positive or total negative of the battery cluster, and the other end of the first electric connecting sheet is connected with the bus piece;
One end of the second electric connecting piece is connected with the bus piece, and the other end of the second electric connecting piece is connected with the positive electrode shunting unit or the negative electrode shunting unit.
7. The high-pressure control box according to claim 1, wherein the box body comprises a box door and a cabinet body;
The box door is hinged on the cabinet body, and a display screen is arranged on the box door;
Two supporting beams are respectively arranged in two opposite side walls on the cabinet body, the two supporting beams which are positioned above and have consistent heights are used for fixedly placing a power supply control unit, and the two supporting beams which are positioned below and have consistent heights are used for fixedly placing a charge and discharge transmission unit;
A first through hole for connecting with the total positive and the total negative of the battery clusters of the energy storage equipment and a second through hole for connecting with the electric equipment of the energy storage equipment are arranged on the side wall of the cabinet body, which is far away from one side of the cabinet body;
The bottom of the cabinet body is provided with a third through hole for realizing the connection between the charging and discharging transmission unit and the converter in the energy storage equipment.
8. The high-pressure control box according to claim 1, wherein the first housing comprises a first top cover and a first outer shell with an open top, and the first top cover is mounted on the open end of the first outer shell in a screw connection manner;
An AC interface, a main switch, an indicator light, a surge protector, a surge backup protector, an anode and cathode communication interface and a display screen interface are arranged on the side wall of the first shell, which is close to the box door of the box body;
The first shell is far away from the first interface, the second interface, the third interface, the UPS output interface, the UPS power supply interface and the fourth interface on the side wall of the box door of the box body;
and the other two side walls of the first shell are provided with heat dissipation holes.
9. The high-pressure control box according to claim 1, wherein the second housing comprises a second top cover and a second outer shell with an open top, and the second top cover is mounted on the open end of the second outer shell in a screw connection manner;
The side wall of the second shell, which is close to the box door of the box body, is provided with M converter communication interfaces, M first positive electrode interfaces, M first negative electrode interfaces and a cascade communication interface;
The side wall of the second shell, which is far away from the box door of the box body, is provided with N second anode interfaces and N second cathode interfaces;
Fans are arranged on the side walls of the two sides of the second shell.
10. The high-voltage control box according to claim 1, wherein the negative electrode circuit assembly and the positive electrode circuit assembly are respectively fixed in the second housing in an insulating manner through a tray assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421223254.5U CN222814252U (en) | 2024-05-31 | 2024-05-31 | A high voltage control box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421223254.5U CN222814252U (en) | 2024-05-31 | 2024-05-31 | A high voltage control box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222814252U true CN222814252U (en) | 2025-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421223254.5U Active CN222814252U (en) | 2024-05-31 | 2024-05-31 | A high voltage control box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222814252U (en) |
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2024
- 2024-05-31 CN CN202421223254.5U patent/CN222814252U/en active Active
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