High-voltage control box structure with power distribution system and energy storage device
By integrating the high-voltage control part and the power distribution part in one box and using copper strip connection devices, the problem of the internal space of the energy storage system cabinet is not compact and the wiring harness is messed up, achieving higher compactness and aesthetics, while reducing cost and weight.
Patent Information
- Application Number
- CN202422288793.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the prior art, the separate assembly of the high-voltage control part and the distribution part leads to the problem of not compact internal space of the energy storage system cabinet, many wiring harnesses, difficult wiring, and messy wiring harness distribution.
The control part and the power distribution part are integrated into a box, and the device is connected through copper bars to optimize the internal layout, making the device distribution more compact, and the wiring is completed in the box to avoid messy wiring harnesses.
It improves the compactness and aesthetics of the energy storage cabinet, saves raw material costs, reduces wiring difficulty and cabinet weight, and enhances safety and reliability.
Smart Images
Figure CN223124395U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of energy storage devices, and particularly to a high-voltage control box structure with a power distribution system and an energy storage device. Background Art
[0002] In the construction of electrochemical energy storage power stations, industrial and commercial integrated cabinets are usually used as battery compartments for each unit. A number of battery packs, high-voltage control parts, and power distribution parts are distributed in each integrated cabinet. The high-voltage control part is the core component in the energy storage system, which can realize functions such as charge and discharge control, protection, and monitoring of the energy storage system; the power distribution part is used for power distribution control of various power sources in the energy storage power station to ensure stable power supply to the battery packs.
[0003] In the related art, the high-voltage control part and the power distribution part are usually integrated in two separate boxes and installed inside the integrated cabinet, or the power distribution part is directly and dispersedly integrated inside the integrated cabinet. Please refer to the attached Figure 1 specification. When the control part 01 and the power distribution part 02 are assembled separately, it will additionally occupy the internal space of the cabinet body, affecting the cabinet body size; and separate assembly will cause the internal components of the integrated cabinet to be not compact enough, with low utilization rate of the cabinet internal space. At the same time, it will cause problems such as many wiring harnesses, difficult wiring, and messy wiring harness distribution inside the cabinet.
[0004] Therefore, aiming at the above technical problems, how to reasonably arrange the control part and the power distribution part in the cabinet body is a technical problem that those skilled in the art need to solve. Summary of the Utility Model
[0005] The purpose of this application is to provide a high-voltage control box structure with a power distribution system and an energy storage device, which integrates the control part and the power distribution part in one box, improves the compactness of the cabinet body, and enables the wiring between the components in the power distribution part and the wiring between the power distribution part and the control part to be located inside the box, thereby avoiding problems such as many wiring harnesses, difficult wiring, and messy wiring harness distribution.
[0006] To achieve the above purpose, this application provides a high-voltage control box structure with a power distribution system, including a box body, and a control component and a power distribution component integrated on the box body. The control component includes a control main circuit provided on one side inside the box body, a protection branch provided in the middle inside the box body, and a changeover switch provided in the middle inside the box body. The power distribution component includes a power distribution main circuit provided on the other side inside the box body and a branch circuit provided in the middle inside the box body.
[0007] Preferably, the main control loop includes a main negative shunt, a main negative contactor, a main positive fuse, a main positive contactor, a main control system, and a main loop copper busbar. The main power distribution loop includes a circuit breaker, a current transformer, and a connection copper busbar. The protection branch includes a pre-charge resistor and a pre-charge contactor disposed in the middle side inside the box body. The branch loop includes a transfer switch side fuse, a docking terminal, a current transformer side fuse, and a surge protector disposed in the middle side inside the box body.
[0008] Preferably, a battery input terminal is provided on the front panel of the box body. The battery input terminal includes a battery positive input terminal and a battery negative input terminal. A battery output terminal is provided on the rear panel of the box body. The battery output terminal includes a battery positive output terminal and a battery negative output terminal. The battery positive input terminal is sequentially connected to the main positive fuse, the main positive contactor, and the battery positive output terminal from front to back through the main loop copper busbar. The battery negative input terminal is sequentially connected to the main negative shunt, the main negative contactor, and the battery negative output terminal from front to back through the main loop copper busbar.
[0009] Wherein, the pre-charge contactor and the pre-charge resistor are connected in series and are in parallel with the main positive contactor.
[0010] Preferably, a power input terminal is provided on the front panel of the box body. A power output terminal is provided on the rear panel of the box body. The power input terminal is sequentially connected to the circuit breaker, the current transformer, and the power output terminal from front to back through the connection copper busbar.
[0011] Preferably, the transfer switch is an AC-DC to DC switching power supply. The AC input terminal of the transfer switch is electrically connected to the main loop copper busbar. The DC input terminal of the transfer switch is electrically connected to the connection copper busbar through the transfer switch side fuse. The voltage output terminal of the transfer switch is electrically connected to the main control system through the docking terminal to supply power to the main control system.
[0012] Preferably, the main control system is disposed on the side of the box body close to the control component inside the box body. The input and output pins of the main control system are electrically connected to a wiring terminal. The wiring terminal is provided on the front panel of the box body.
[0013] Preferably, an AC power supply switch is provided on the circuit where the AC input terminal of the transfer switch is electrically connected to the main loop copper busbar. A DC power supply switch is provided on the circuit where the DC input terminal of the transfer switch is electrically connected to the connection copper busbar. The AC power supply switch and the DC power supply switch are provided on the front panel of the box body.
[0014] Preferably, the wiring copper bar is a three-phase four-wire copper bar, which is electrically connected to the socket and the wiring terminal through the docking terminal, and the socket and the wiring terminal are arranged on the front panel of the box body.
[0015] Preferably, an electricity meter is arranged on the front panel of the box body. The output end of the current transformer is connected to the current input end of the electricity meter, and the voltage input end of the electricity meter is electrically connected to the wiring copper bar through the fuse on the transformer side.
[0016] Preferably, the wiring copper bar is also electrically connected to the surge protector through a surge switch, and the surge switch is arranged on the front panel of the box body.
[0017] An energy storage device includes a plurality of battery packs and also includes the high-voltage control box structure with a power distribution system as described above.
[0018] Compared with the above background art, in this application, the control component and the power distribution component are integrated on the box body. The control main circuit in the control component is arranged on one side of the box body, and the power distribution main circuit of the power distribution component is arranged on the other side of the box body. Moreover, some branches in the control component and the power distribution component are arranged in the middle side of the box body, making the distribution of devices in the box body more compact. Thus, the size of the box body can be applicable to various specifications of energy storage cabinets, and the weight of the cabinet body can be moderately reduced, and it can be placed at the bottom or side of the cabinet as required, thereby saving the raw material cost. At the same time, some internal jumper wires of the power distribution component and the control component can be connected inside the box body, avoiding affecting the internal wiring of the energy storage cabinet and improving the overall aesthetics and neatness of the cabinet body. Description of the Drawings
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.
[0020] Figure 1 It is a schematic diagram of the distribution structure of the control part and the power distribution part in the box cabinet in the prior art;
[0021] Figure 2 It is a schematic diagram of the internal structure of the high-voltage control box structure with a power distribution system provided by the embodiment of the present application;
[0022] Figure 3 It is a three-dimensional schematic diagram of the high-voltage control box structure with a power distribution system provided by the embodiment of the present application;
[0023] Figure 4Rear view of the high-voltage control box structure with a power distribution system provided by an embodiment of the present application;
[0024] Figure 5 Electrical schematic diagram of the high-voltage control box structure with a power distribution system provided by an embodiment of the present application.
[0025] In the figure: 01 - control part; 02 - power distribution part;
[0026] 10 - box body;
[0027] 20 - control components; 201 - main negative shunt; 202 - main positive fuse; 203 - main control system; 204 - main negative contactor; 205 - main positive contactor; 206 - main circuit copper busbar; 207 - pre-charge resistor; 208 - pre-charge contactor; 209 - intermediate relay; 210 - change-over switch; 211 - battery input terminal; 212 - battery output terminal; 213 - watt-hour meter; 214 - terminal block; 215 - DC power supply switch;
[0028] 30 - power distribution components; 301 - circuit breaker; 302 - connection copper busbar; 303 - current transformer; 304 - surge protector; 305 - fuse on the current transformer side; 306 - docking terminal; 307 - fuse on the change-over switch side; 308 - power input terminal; 309 - power output terminal; 310 - AC power supply switch; 311 - socket; 312 - surge switch. Detailed implementation manners
[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0030] It should be noted that in this embodiment, the orientation or positional relationship indicated by "up", "down", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0031] In order to enable those skilled in the art of this technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.
[0032] Please refer to Figure 2, in this embodiment, a high-voltage control box structure with a power distribution system is provided, that is, this structure integrates the control part required by the high-voltage box control box and the power distribution part required inside the box cabinet. Thus, on the basis of not affecting the overall function of the box cabinet, the control components 20 and the power distribution components 30 are reasonably distributed in the box body 10 as much as possible, making the internal structure of the box body 10 compact and tidy.
[0033] Specifically, the control components 20 provided on the box body 10 of this application include a control main circuit located on one side inside the box body 10, a protection branch circuit provided in the middle side inside the box body 10, and a changeover switch 210 provided in the middle side inside the box body 10; the power distribution components 30 include a power distribution main circuit provided on the other side inside the box body 10 and a branch circuit provided in the middle side inside the box body 10.
[0034] The control main circuit includes a main negative shunt 201, a main negative contactor 204, a main positive fuse 202, a main positive contactor 205, a main control system 203, and a main circuit copper bar 206. Please refer to Figure 2 , the control main circuit is preferably located on one side of the box body 10 and is distributed from front to back along the box body 10; the corresponding power distribution main circuit includes a circuit breaker 301, a current transformer 303, and a connection copper bar 302. Considering that the main devices in the control components 20 and the power distribution components 30 are connected by copper bars, to a certain extent, a linear distribution method can be adopted, that is, the main positive fuse 202 is connected to the main positive contactor 205 through the main circuit copper bar 206 at the directly rear side, the main negative shunt 201 is connected to the main negative contactor 204 through the main circuit copper bar 206 at the directly rear side, and the circuit breaker 301 is connected to the current transformer 303 through the connection copper bar 302; of course, according to actual needs, the copper bar can also be bent at a certain angle for connection, which is not limited here too much, and try to avoid the unnecessary internal space of the box body 10 occupied by the connected devices due to the irregularity of the copper bar.
[0035] The protection branch circuit includes a pre-charge resistor 207 and a pre-charge contactor 208 provided in the middle side inside the box body 10, and the branch circuit includes a fuse 307 on the changeover switch side, a docking terminal 306, a fuse 305 on the current transformer side, and a surge protector 304 provided in the middle side inside the box body 10. By arranging the above components in the middle of the box body 10, the connection requirements of the above components with multiple pins or multiple input / output ends can be met, saving the length of some internal jumper wires and reducing the labor and wiring harness costs at the production end.
[0036] In combination with the above embodiments, the present application integrates the control component 20 and the power distribution component 30 on the box body 10. Multiple devices in the control component 20 are arranged on one side of the box body 10, multiple devices in the power distribution component 30 are arranged on the other side of the box body 10, and some devices in the control component 20 and the power distribution component 30 are also arranged in the middle side of the box body 10, making the distribution of devices in the box body 10 more compact. Furthermore, the size of the box body 10 can be adapted to various specifications of energy storage cabinets, and the weight of the cabinet body can be moderately reduced, and it can be placed at the bottom or side of the cabinet body as required, thereby saving raw material costs. At the same time, some internal jumper wires of the power distribution component 30 and the control component 20 can be connected inside the box body 10, avoiding affecting the internal wiring of the energy storage cabinet and improving the overall aesthetics and neatness of the cabinet body, etc.
[0037] In addition, please refer to Figure 3 , on the front panel of the box body 10, there is a battery input terminal 211. The motor input terminal includes a battery positive input terminal and a battery negative input terminal. On the rear panel of the box body 10, there is a battery output terminal 212. The battery output terminal 212 includes a battery positive output terminal and a battery negative output terminal. For details, please refer to Figure 4 ; On this basis, the battery positive input terminal is connected to the battery positive output terminal through the main circuit copper bar 206 in sequence from front to back, connecting the main positive fuse 202 and the main positive contactor 205. The battery negative input terminal is connected to the battery negative output terminal through the main circuit copper bar 206 in sequence from front to back, connecting the main negative shunt 201 and the main negative contactor 204; and the pre-charge contactor 208 and the pre-charge resistor 207 are connected in series and are in parallel with the main positive contactor 205.
[0038] On the front panel of the box body 10, there is a power input terminal 308. On the rear panel of the box body 10, there is a power output terminal 309. The power input terminal 308 is connected to the power output terminal 309 through the wiring copper bar 302 in sequence from front to back, connecting the circuit breaker 301 and the current transformer 303.
[0039] In some embodiments, if the power input terminal 308 accesses a 380V three-phase voltage, then the corresponding wiring copper bar 302 is a three-phase four-wire copper bar, which greatly increases the reliability and stability compared with the connection of a single wire harness. Rivet nuts are added to the copper bar, which also facilitates subsequent production and assembly; specifically, an external socket 311 and a wiring terminal 214 can be connected to the wiring copper bar 302 through rivet nuts. A live wire can be led out from any one of the A / B / C phases in the three-phase copper bar, and a ground wire can be led out from the N phase, so that the socket 311 and the port led out from the wiring terminal 214 can be used normally, such as for power consumption of a water cooling system, a dehumidifier, a fan, etc. Among them, to facilitate the normal use of the socket 311 and the wiring terminal 214, the socket 311 and the wiring terminal 214 can be arranged on the front panel of the box body 10. Of course, they can also be located on other panels of the box body 10, as long as it is convenient for plugging and unplugging, and can be set according to actual needs.
[0040] Among them, the above conversion switch 210 is an AC-DC to DC switching power supply. AC is alternating current, and DC is direct current. The AC-DC to DC switching power supply is a composite switching power supply used to convert direct current or alternating current into direct current within a specific voltage range. The AC input terminal of the conversion switch 210 is electrically connected to the connecting wire electrically led out from the main circuit busbar 206. The DC input terminal of the conversion switch 210 is electrically connected to the connecting wire led out from the wiring busbar 302 through the fuse 307 on the conversion switch side. The voltage output terminal of the conversion switch 210 is electrically connected to the main control system 203 through the docking terminal 306 to supply power to the main control system 203.
[0041] Based on the above embodiment, the main control system 203 is arranged on the side of the interior of the box body 10 close to the control component 20 to reduce the space occupied by the main control system 203 in the box body 10. The main control system 203 can be a BCU (Bus Control Unit) controller. The input and output pins of the main control system 203 are electrically connected to the terminal block 214. At the same time, according to actual requirements, an intermediate relay 209 can also be set on the connecting wire between the input and output pins and the terminal block 214 to complete specific control requirements. The terminal block 214 is arranged on the front panel of the box body 10 to facilitate the access of the unit to be controlled.
[0042] An AC power supply switch 310 is provided on the circuit where the AC input terminal of the conversion switch 210 is electrically connected to the main circuit busbar 206. A DC power supply switch 215 is provided on the circuit where the DC input terminal of the conversion switch 210 is electrically connected to the wiring busbar 302. The AC power supply switch 310 and the DC power supply switch 215 are arranged on the front panel of the box body 10.
[0043] In addition, an electric energy meter 213 is also provided on the front panel of the box body 10. The output terminal of the current transformer 303 is connected to the current input terminal of the electric energy meter 213. The voltage input terminal of the electric energy meter 213 is electrically connected to the wiring busbar 302 through the fuse 305 on the transformer side.
[0044] The wiring busbar 302 is also electrically connected to the surge protector 304 through the surge switch 312. The surge switch 312 is arranged on the front panel of the box body 10. It should be noted that for the above components such as terminals arranged on the front panel or the rear panel, they can be arranged on other panels of the box body 10 according to actual requirements, and no excessive restrictions are imposed here.
[0045] Please refer to Figure 5 , Figure 5It is the electrical schematic diagram of the high-voltage control box structure with a power distribution system. After optimizing the control component 20 and the power distribution component 30, the number and length of the internal jumper wires in the box body 10 can be reduced. Meanwhile, on the premise that the internal component structure of the box body 10 is compact, the overall size of the box body 10 can be effectively solved, thereby effectively saving the size of the energy storage cabinet body, moderately reducing the weight of the cabinet body, and further saving the raw material cost. At the same time, the terminals are uniformly distributed on the panel of the box body 10, which is convenient for subsequent wiring, saving the wiring cost and the subsequent maintenance cost, and can avoid removing a large number of shielding sheet metals during the wiring process, greatly saving the wiring time, and at the same time reducing the manufacturing costs in terms of sheet metals, wire harnesses, assembly, shipping, etc.; and by integrating the power distribution component 30 and the control component 20 in the box body 10, the fault tolerance rate of the energy storage box cabinet body can be better, the compactness of the internal components of the cabinet body can be maintained, and the internal appearance can be kept beautiful and tidy. In addition, this structure can greatly increase the safety of the box cabinet body, avoiding potential safety hazards during subsequent assembly and debugging. For example, when the power distribution component 30 and the control component 20 are assembled separately, some sheet metal baffles and acrylic transparent sheets inside the box cabinet body need to be removed, and the wiring is rather cumbersome.
[0046] This application also provides an energy storage device, including a plurality of battery packs, and further including the above-mentioned high-voltage control box structure with a power distribution system, so as to keep the interior of the energy storage device beautiful and tidy.
[0047] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.
[0048] Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A high-voltage control box structure with a power distribution system, characterized in that, It includes a box body (10), as well as a control component (20) and a power distribution component (30) integrated on the box body (10). The control component (20) includes a control main circuit arranged on one side inside the box body (10), a protection branch arranged in the middle inside the box body (10), and a change-over switch (210) arranged in the middle inside the box body (10). The power distribution component (30) includes a power distribution main circuit arranged on the other side inside the box body (10) and a branch circuit arranged in the middle inside the box body (10).
2. The high-voltage control box structure with a power distribution system according to claim 1, characterized in that, The control main circuit includes a main negative shunt (201), a main negative contactor (204), a main positive fuse (202), a main positive contactor (205), a main control system (203), and a main circuit copper bar (206). The power distribution main circuit includes a circuit breaker (301), a current transformer (303), and a wiring copper bar (302). The protection branch includes a pre-charge resistor (207) and a pre-charge contactor (208) arranged in the middle inside the box body (10). The branch circuit includes a change-over switch side fuse (307), a docking terminal (306), a current transformer side fuse (305), and a surge protector (304) arranged in the middle inside the box body (10).
3. The high-voltage control box structure with a power distribution system according to claim 2, characterized in that, A battery input terminal (211) is provided on the front panel of the box body (10). The battery input terminal (211) includes a battery positive input terminal and a battery negative input terminal. A battery output terminal (212) is provided on the rear panel of the box body (10). The battery output terminal (212) includes a battery positive output terminal and a battery negative output terminal. The battery positive input terminal is sequentially connected to the main positive fuse (202), the main positive contactor (205), and the battery positive output terminal from front to back through the main circuit copper bar (206). The battery negative input terminal is sequentially connected to the main negative shunt (201), the main negative contactor (204), and the battery negative output terminal from front to back through the main circuit copper bar (206). Among them, the pre-charge contactor (208) and the pre-charge resistor (207) are connected in series and are in parallel with the main positive contactor (205).
4. The high-voltage control box structure with a power distribution system according to claim 3, characterized in that, A power input terminal (308) is provided on the front panel of the box body (10). A power output terminal (309) is provided on the rear panel of the box body (10). The power input terminal (308) is sequentially connected to the circuit breaker (301), the current transformer (303), and the power output terminal (309) from front to back through the wiring copper bar (302).
5. The high-voltage control box structure with a power distribution system according to claim 4, characterized in that, The change-over switch (210) is an AC-DC to DC switching power supply. The AC input terminal of the change-over switch (210) is electrically connected to the main circuit copper bar (206). The DC input terminal of the change-over switch (210) is electrically connected to the wiring copper bar (302) through the change-over switch side fuse (307). The voltage output terminal of the change-over switch (210) is electrically connected to the main control system (203) through the docking terminal (306) to supply power to the main control system (203).
6. The high-voltage control box structure with a power distribution system according to claim 5, characterized in that, The main control system (203) is arranged on the side close to the control component (20) inside the box body (10). The input and output pins of the main control system (203) are electrically connected to the wiring terminal (214), and the wiring terminal (214) is arranged on the front panel of the box body (10).
7. The high-voltage control box structure with a power distribution system according to claim 5, characterized in that, An AC power supply switch (310) is provided on the circuit where the AC input end of the changeover switch (210) is electrically connected to the main circuit copper bar (206). A DC power supply switch (215) is provided on the circuit where the DC input end of the changeover switch (210) is electrically connected to the wiring copper bar (302). The AC power supply switch (310) and the DC power supply switch (215) are arranged on the front panel of the box body (10).
8. The high-voltage control box structure with a power distribution system according to claim 2, characterized in that, The wiring copper bar (302) is a three-phase four-wire copper bar. The wiring copper bar (302) is electrically connected to the socket (311) and the wiring terminal (214) through the docking terminal (306). The socket (311) and the wiring terminal (214) are arranged on the front panel of the box body (10).
9. The high-voltage control box structure with a power distribution system according to claim 2, characterized in that, The front panel of the box body (10) is provided with an electricity meter (213). The output end of the current transformer (303) is connected to the current input end of the electricity meter (213). The voltage input end of the electricity meter (213) is electrically connected to the wiring copper bar (302) through the fuse on the transformer side (305).
10. The high-voltage control box structure with a power distribution system according to claim 2, characterized in that, The wiring copper bar (302) is also electrically connected to the surge protector (304) through the surge switch (312), and the surge switch (312) is arranged on the front panel of the box body (10).
11. An energy storage device, comprising a plurality of battery packs, characterized in that, It also includes a high-voltage control box structure with a power distribution system as described in any one of claims 1-10.