Quick-switching branching device for capacity checking

Abstract

The utility model relates to the technical field of energy storage systems, in particular to a fast-switching capacity-checking branching device, which is characterized in that a bus input and output end, a capacity-checking switch and a capacity-checking output end are mounted on the front surface of a switch box; the bus copper bar is also provided with a copper bar electricity taking branch, and the other end of the bus copper bar is connected to the switch input end of the capacity checking switch; the switch output end of the capacity checking switch is connected to the capacity checking output end. In order to solve the problem that the output end of the battery cabinet needs to be reconnected when the capacity checking test is carried out on the battery cabinet in the prior art, according to the scheme, a copper bar power taking branch is arranged on a bus copper bar in a switch box to be connected with a capacity checking switch and is led out. In a normal working mode, the capacity checking switch is switched off; when capacity checking is needed, the external load is disconnected, the capacity checking switch and the capacity checking output end are connected for testing, a cable on the power supply side does not need to be disassembled, and related risks are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage system technical field, concretely relates to a kind of branch device for quick switching nuclear capacity. BACKGROUND

[0002] Backup energy storage system, also known as Uninterruptible Power Supply (UPS), is an uninterrupted power supply containing energy storage device. It is mainly used to provide uninterrupted power supply for some devices with high requirements on power stability. When the mains input is normal, the UPS will supply the mains after voltage stabilization to the load, at this time the UPS is an AC power stabilizer, and it also charges the battery in the machine; When the mains is interrupted (accident power failure), the UPS immediately converts the DC power of the battery to continue supplying 220V AC power to the load through inverter switching, so that the load maintains normal work and protects the load software and hardware from damage. UPS equipment can provide protection for both voltage overload and voltage undershoot.

[0003] In order to make the energy storage system meet the design index during operation, especially to maintain a certain length of uninterrupted power time under certain power load, it is often necessary to perform nuclear capacity operation during operation and maintenance.

[0004] Nuclear capacity refers to the charging and discharging operation of the battery pack in the energy storage system, which usually goes through a complete charging and discharging cycle to determine whether the chargeable capacity in the battery pack is within the predetermined range. Generally, such tests are usually based on nuclear capacity test equipment. For example, Chinese patent CN201420774656.4 discloses an online nuclear capacity auxiliary device for substation battery, which is used to connect the discharge tester and the battery pack. The battery pack is powered by a battery power supply, and a fuse is provided between the battery pack and the battery power supply. The auxiliary device is composed of 9 terminals, 2 diodes and 2 switches. By using the principle of one-way conduction of 2 diodes and the wiring of 9 terminals, when the fuse is separated, the battery power supply cannot charge the battery pack, and the battery pack can instead supply power to the battery power supply, thus realizing online nuclear capacity. The position of the segmented point of the battery pack is calculated by using the principle of circuit resistance in series, and two discharge testers corresponding to the rated voltage parameters after segmentation are found. After connection, online nuclear capacity test is started, which can save test time and also use conventional discharge testers to complete the nuclear capacity test of UPS battery pack with high power.

[0005] However, in actual implementation process, the inventor finds that, since the battery pack is usually mounted on the UPS system when it needs to be maintained, the high-voltage cable at the UPS end needs to be dismounted and a smaller power terminal needs to be connected to realize the connection of the discharge load device. After the discharge capacity is completed, the high-voltage cable is dismounted again and mounted to the connection point of the UPS. The capacity process operation is complicated, and the frequent dismounting and mounting of the battery pack product also brings hidden dangers to the quality and safety of the product. Utility model content

[0006] In view of the above problems existing in the prior art, a quick switching capacity distribution device is provided.

[0007] The specific technical solutions are as follows:

[0008] A quick switching capacity distribution device, comprising a switch box;

[0009] The front surface of the switch box is provided with a bus input and output end, a capacity switch and a capacity output end;

[0010] The bus input end of the bus input and output end is connected to the battery pack, and the bus output end of the bus input and output end is connected to the external load;

[0011] The bus input and output end is provided with a bus copper bar in the switch box;

[0012] The first end of the bus copper bar is connected to the bus input end of the bus input and output end, and the second end of the bus copper bar is connected to the bus output end of the bus input and output end;

[0013] The bus copper bar is also provided with a copper bar power taking branch;

[0014] The other end of the copper bar power taking branch is connected to the switch input end of the capacity switch;

[0015] The switch output end of the capacity switch is connected to the capacity output end.

[0016] On the other hand, the bus copper bar comprises a positive bus copper bar and a negative bus copper bar;

[0017] The bus input end comprises a positive input end and a negative input end;

[0018] The bus output end comprises a positive output end and a negative output end;

[0019] The bus input and output end is rectangular;

[0020] The positive input end, the negative input end, the positive output end and the negative output end are arranged in sequence;

[0021] The first end of the positive busbar copper bar is connected to the positive input end, and the second end of the positive busbar copper bar is connected to the positive output end.

[0022] The positive busbar copper bar passes over the negative input end in an inverted U shape above the negative input end.

[0023] The first end of the negative busbar copper bar is connected to the negative input end, and the second end of the negative busbar copper bar is connected to the negative output end.

[0024] The negative busbar copper bar passes over the positive input end in a U shape above the positive input end.

[0025] In another aspect, the copper bar power taking branch includes a positive power taking branch and a negative power taking branch.

[0026] The switch input end of the nuclear capacity switch includes a positive input end and a negative input end.

[0027] The positive power taking branch extends upwards from the horizontal section of the positive busbar copper bar, turns towards the nuclear capacity switch after reaching the height above the nuclear capacity switch, and connects the positive input end.

[0028] The negative power taking branch extends laterally from the horizontal section of the negative busbar copper bar.

[0029] The negative power taking branch extends upwards after passing over the negative output end, turns towards the nuclear capacity switch after reaching the height above the nuclear capacity switch, and connects the negative input end.

[0030] In another aspect, the nuclear capacity switch is connected to the nuclear capacity output end through a nuclear capacity output copper bar.

[0031] The nuclear capacity output end is installed on the side of the nuclear capacity switch.

[0032] The nuclear capacity output copper bar includes a positive nuclear capacity output copper bar and a negative nuclear capacity output copper bar.

[0033] The nuclear capacity output copper bar extends horizontally from the direction below the nuclear capacity switch to the direction of the nuclear capacity output end.

[0034] The nuclear capacity output copper bar extends upwards to the nuclear capacity output end after reaching below the nuclear capacity output end.

[0035] In another aspect, the nuclear capacity switch further includes a neutral input end and a neutral output end.

[0036] The neutral input end and the neutral output end are connected through a neutral copper bar.

[0037] The neutral copper bar extends from above the nuclear capacity switch to below the nuclear capacity switch along the side surface.

[0038] In another aspect, the switch box is provided with a test notch at a position corresponding to the nuclear capacity input end and the nuclear capacity output end.

[0039] In another aspect, the switch box is provided with a test notch at a position corresponding to the nuclear capacity input end and the nuclear capacity output end.

[0040] In another aspect, the front surface of the bus input / output end is in the shape of an open box body.

[0041] The opening of the bus input / output end faces downward.

[0042] In another aspect, the bottom of the switch box is provided with a fixing step.

[0043] The fixing step is in the shape of a closed box body.

[0044] The total height of the switch box and the fixing step is 4U.

[0045] In another aspect, the side surface of the fixing step is in the shape of a Chinese character "Ku".

[0046] The front of the fixing step is provided with a ground fixing plate.

[0047] The above technical solution has the following advantages or beneficial effects:

[0048] In view of the problem that the output end of the battery cabinet needs to be re-wired when the nuclear capacity test is performed in the prior art, a switch box is introduced on the output wiring end at the bottom of the battery cabinet, the switch box has a bus input / output end for connecting the circuit on the battery side and the external load respectively, and a copper bar power taking branch is provided on the bus copper bar in the switch box to connect the nuclear capacity switch and lead out. In the normal working mode, the nuclear capacity switch is disconnected; when the nuclear capacity needs to be tested, the external load is disconnected, the nuclear capacity switch and the nuclear capacity output end are connected, and the cable on the power supply side does not need to be disassembled, thereby avoiding the related risks. BRIEF DESCRIPTION OF DRAWINGS

[0049] Reference will now be made to the accompanying drawings, which are meant to be exemplary only and do not limit the scope of the present application.

[0050] Figure 1 An isometric view of the shell assembly of the present application is shown.

[0051] Figure 2 A schematic view of the internal structure of the switch box of the present application is shown.

[0052] Figure 3The utility model discloses an oblique view of the front panel. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the utility model.

[0054] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0055] The utility model will be further described in connection with the drawings and specific embodiments, but not as the limitation of the utility model.

[0056] The utility model discloses a battery cabinet for nuclear capacity test, which comprises a battery cabinet body, a switch box and a nuclear capacity output terminal.

[0057] A nuclear capacity test device for a battery cabinet, as shown in the accompanying drawings, comprises a switch box and a nuclear capacity output terminal. Figure 1 、 2 The switch box is installed on the bottom of the battery cabinet body.

[0058] The front of the switch box is provided with a bus input and output terminal, a nuclear capacity switch and a nuclear capacity output terminal.

[0059] The bus input end of the bus input and output terminal is connected with a battery pack, and the bus output end of the bus input and output terminal is connected with an external load.

[0060] The bus input and output terminal is provided with a bus copper bar in the switch box.

[0061] The first end of the bus copper bar is connected with the bus input end, and the second end of the bus copper bar is connected with the bus output end.

[0062] The bus copper bar is further provided with a copper bar power taking branch.

[0063] The other end of the copper bar power taking branch is connected with the switch input end of the nuclear capacity switch.

[0064] The switch output end of the nuclear capacity switch is connected with the nuclear capacity output terminal.

[0065] Specifically, in order to solve the problem that the output terminal of the battery cabinet needs to be rewired when the battery cabinet in the prior art is tested for nuclear capacity, a switch box 1 is introduced on the output terminal at the bottom of the battery cabinet, and the switch box 1 has a bus input and output terminal 2 for connecting the circuit on the battery pack side and the external load respectively.

[0066] Generally, the switch box 1 is installed at the bottom of a battery cabinet, and a plurality of stacked battery packs are arranged above the battery cabinet. The battery packs are connected in series and parallel in a specific order, and finally form a pair of DC bus bars. The DC bus bars are connected to the bus bar input and output end 2 on the bottom switch box 1 as a terminal. The bus bar input and output end 2 is provided with a bus bar copper bar 5 near the inner side of the switch box 1, which is used to connect the positive input end and the positive output end, the negative input end and the negative output end respectively. The negative output end and the positive output end of the bus bar input and output end 2 are used as terminals and are connected to the external load, usually the output controller of the UPS system and the like.

[0067] Correspondingly, in order to facilitate the capacity test operation, the copper bar power taking branch 6 is opened on the bus bar copper bar 5 in the switch box 1, and the other end of the copper bar power taking branch 6 is connected to the capacity test switch 3, and the capacity test switch 3 is electrically connected with the capacity test output end 4. The outer side of the capacity test output end 4 can be used as a terminal and is connected to the capacity test device.

[0068] In the normal working mode, the capacity test switch 3 is disconnected; when the capacity test is needed, the external load is disconnected, and then the capacity test device is connected to the capacity test output end 4, and then the capacity test switch 3 is opened to test.

[0069] It can be seen that based on the capacity test branching device, the normal battery pack and the cable on the UPS system side do not need to be disassembled during the capacity test, and the related risks are avoided.

[0070] In one embodiment, the bus bar copper bar 5 includes a positive bus bar copper bar 51 and a negative bus bar copper bar 52;

[0071] The bus bar input end includes a positive input end and a negative input end;

[0072] The bus bar output end includes a positive output end and a negative output end;

[0073] The bus bar input and output end 2 is rectangular;

[0074] The positive input end, the negative input end, the positive output end and the negative output end are arranged in sequence;

[0075] The first end of the positive bus bar copper bar 51 is connected to the positive input end, and the second end of the positive bus bar copper bar 51 is connected to the positive output end;

[0076] The positive bus bar copper bar 51 is in the shape of an inverted U and passes above the negative input end;

[0077] The first end of the negative bus bar copper bar 52 is connected to the negative input end, and the second end of the negative bus bar copper bar 52 is connected to the negative output end;

[0078] The negative busbar copper bar 52 is in the shape of a U and passes over the positive input end.

[0079] In particular, to achieve a relatively compact device size and to comply with relevant wiring practices, in this embodiment, the structure of the busbar input / output end 2 is adjusted on the front face of the switch box 1, and the positive input end, the negative input end, the positive output end and the negative output end are sequentially arranged. When wiring, the left side is used to connect the battery pack, and the right side is connected to the external load.

[0080] Due to the switch box designed based on the scheme, the cable on the power supply side does not need to be disassembled again during the nuclear capacity test. To achieve a relatively firm long-term wiring, in one embodiment, as shown in Figure 3 the front face of the busbar input / output end 2 is in the shape of an open box body, including the wiring post at the back and the cover plate at the front.

[0081] The opening of the open box body is arranged downward. When wiring, the front cover plate is removed, and the cable on the battery pack side and the cable on the external load side are connected to the internal wiring post respectively, and then the cable is laid out from the gap below in accordance with the corresponding wiring specifications, such as sleeving the terminal on the wiring post, and then tightening the fixing bolt on the wiring post. Finally, the cover plate is covered on the front face to form a single-sided opening box body, avoiding water dripping and dust accumulation from the top into the wiring position.

[0082] On the inside, a relatively short wiring path is formed by the two U-shaped positive busbar copper bar 51 and negative busbar copper bar 52.

[0083] In one embodiment, the copper bar power taking branch 6 includes a positive power taking branch 61 and a negative power taking branch 62;

[0084] The switch input end of the nuclear capacity switch 3 includes a positive input end and a negative input end;

[0085] The positive power taking branch 61 extends upward from the horizontal section of the positive busbar copper bar 51, reaches the height above the nuclear capacity switch 3, turns to the nuclear capacity switch and connects the positive input end;

[0086] The negative power taking branch 62 extends to the side from the horizontal section of the negative busbar copper bar 52;

[0087] The negative power taking branch 62 extends upward after passing over the negative output end, reaches the height above the nuclear capacity switch 3, turns to the nuclear capacity switch and connects the negative input end.

[0088] Specifically, in order to achieve a more compact wiring effect, in the embodiment, after the U-shaped positive busbar copper bar 51 and the negative busbar copper bar 52 are designed, the positive power taking branch 61 and the negative power taking branch 62 are made to be led out above the horizontal section of the positive busbar copper bar 51 and on the side of the horizontal section of the negative busbar copper bar 52 respectively. It should be noted that the positive power taking branch 61 and the negative power taking branch 62 are usually also copper bar structures, and are integrally formed with the corresponding positive busbar copper bar 51 and negative busbar copper bar 52 when they are made.

[0089] In one embodiment, the nuclear capacity switch 3 is connected to the nuclear capacity output end through the nuclear capacity output copper bar 7;

[0090] The nuclear capacity output end 4 is installed on the side of the nuclear capacity switch 3;

[0091] The nuclear capacity output copper bar 7 includes a positive nuclear capacity output copper bar 71 and a negative nuclear capacity output copper bar 72;

[0092] The nuclear capacity output copper bar 7 extends horizontally from the direction below the nuclear capacity switch 3 to the direction of the nuclear capacity output end 4;

[0093] The nuclear capacity output copper bar 7 extends upward to the nuclear capacity output end 4 after reaching below the nuclear capacity output end 4.

[0094] Specifically, in order to achieve a more compact wiring layout, in the embodiment, the nuclear capacity switch 3 is placed up and down, with the input end on the top and the output end on the bottom. Correspondingly, the nuclear capacity output copper bar 7 also includes a pair of positive nuclear capacity output copper bar 71 and negative nuclear capacity output copper bar 72.

[0095] The positive nuclear capacity output copper bar 71 is first extended horizontally to the direction of the nuclear capacity output end 4 after being led out from below the nuclear capacity switch 3, and then extended upward to the positive of the nuclear capacity output end 4 after reaching below the nuclear capacity output end 4.

[0096] The negative nuclear capacity output copper bar 72 is first extended horizontally to the direction of the nuclear capacity output end 4 after being led out from below the nuclear capacity switch 3, and then extended upward to the negative of the nuclear capacity output end 4 after reaching below the nuclear capacity output end 4.

[0097] In one embodiment, the nuclear capacity switch 3 also includes a neutral line input end and a neutral line output end;

[0098] The neutral line input end and the neutral line output end are connected through the neutral line copper bar 31;

[0099] The neutral line copper bar 31 extends from above the nuclear capacity switch 3 along the side to below the nuclear capacity switch 3.

[0100] Specifically, in order to meet the requirement of neutral line output, in the embodiment, a neutral line copper bar 31 is arranged on the side of the nuclear capacity switch 3, extending from the top to the bottom to make neutral line wiring.

[0101] In one embodiment, the switch box 1 is provided with a test notch 9 at the positions corresponding to the nuclear capacity input end and the nuclear capacity output end.

[0102] Specifically, in order to meet the requirement of corresponding fault detection, in the embodiment, the front surface of the switch box 1 is provided with holes at the positions corresponding to the nuclear capacity input end and the nuclear capacity output end, so that the relevant test probe can pass through the front surface panel to reach the copper bar on the nuclear capacity input end and the nuclear capacity output end at the rear to measure the potential. The nuclear capacity input end includes a positive input end, a neutral line input end and a negative input end; the nuclear capacity output end includes a positive output end, a neutral line output end and a negative output end.

[0103] In one embodiment, the front surface panel of the switch box 1 is provided with auxiliary fixing plates 11 on both sides.

[0104] Specifically, in order to meet the installation requirement in the cabinet, the front surface panel of the switch box 1 is provided with auxiliary fixing plates 11 on both sides, which extend outward from both sides of the front surface panel according to the relevant design requirements of the cabinet, and the auxiliary fixing plates 11 are provided with holes which are aligned with the notches on the cabinet and fixed by screws.

[0105] In one embodiment, the bottom of the switch box 1 is provided with a fixed step 8.

[0106] The fixed step 8 is in the form of a closed box body.

[0107] The total height of the switch box 1 and the fixed step 8 is 4U.

[0108] The side surface of the fixed step 8 is in the form of a convex character.

[0109] The front of the fixed step 8 is provided with a ground fixing plate 81.

[0110] Specifically, considering that the height of the battery pack is usually 4U, and the height of the battery cabinet is usually an integer multiple of 4U, in order to achieve better installation stability, in the embodiment, the bottom of the switch box 1 is provided with a fixed step 8 to raise the switch box 1, so that the total height of the switch box 1 and the fixed step 8 is 4U. The side surface of the fixed step 8 is in the form of a convex character, which is usually closed, but the front and rear panels thereof can be opened in some embodiments to allow cables to pass through. The front of the fixed step 8 is provided with a ground fixing plate 81, which extends forward and is provided with screw holes on the upper surface for screw fixing with the floor of the battery cabinet.

[0111] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A quick switching nuclear containment line splitter, characterized by, The switch box comprises a bus input and output terminal, a nuclear capacity switch and a nuclear capacity output terminal; The bus input and output terminal is provided with a bus copper bar in the switch box; The first end of the bus copper bar is connected to the bus input end of the bus input and output terminal, and the second end of the bus copper bar is connected to the bus output end of the bus input and output terminal; The bus copper bar comprises a positive bus copper bar and a negative bus copper bar; The bus input end comprises a positive input end and a negative input end; The bus output end comprises a positive output end and a negative output end; The bus input and output terminal is rectangular; The positive input end, the negative input end, the positive output end and the negative output end are arranged in sequence; 2. The nuclear power plant according to claim 1, wherein The first end of the positive bus copper bar is connected to the positive input end, and the second end of the positive bus copper bar is connected to the positive output end; The positive bus copper bar is in the shape of inverted U and passes above the negative input end; The first end of the negative bus copper bar is connected to the negative input end, and the second end of the negative bus copper bar is connected to the negative output end; The negative bus copper bar is in the shape of U and passes above the positive input end. The copper branch for taking electricity comprises a positive branch for taking electricity and a negative branch for taking electricity; The switch input end of the nuclear capacity switch comprises a positive input end and a negative input end; The positive branch for taking electricity extends upward from the horizontal section of the positive bus copper bar, turns to the nuclear capacity switch and connects the positive input end after reaching the height above the nuclear capacity switch; The negative branch for taking electricity extends to the side from the horizontal section of the negative bus copper bar; The negative branch for taking electricity extends upward after passing above the negative output end, turns to the nuclear capacity switch and connects the negative input end after reaching the height above the nuclear capacity switch.

3. The nuclear fuel handling branching device of claim 2, wherein The nuclear capacity switch is connected to the nuclear capacity output terminal through a nuclear capacity output copper bar; The nuclear capacity output terminal is installed on the side of the nuclear capacity switch; The nuclear capacity output copper bar comprises a positive nuclear capacity output copper bar and a negative nuclear capacity output copper bar; The nuclear capacity output copper bar extends horizontally from the lower part of the nuclear capacity switch to the direction of the nuclear capacity output terminal; The nuclear capacity output copper bar extends upward to the nuclear capacity output terminal after reaching the lower part of the nuclear capacity output terminal.

4. The nuclear power plant according to claim 1, wherein The nuclear capacity switch further comprises a neutral input end and a neutral output end; The neutral input end and the neutral output end are connected through a neutral copper bar; The neutral copper bar extends from the upper part of the nuclear capacity switch to the lower part of the nuclear capacity switch along the side. The switch box is provided with a test notch at the positions corresponding to the nuclear capacity input end and the nuclear capacity output terminal. The front panel of the switch box is provided with auxiliary fixing plates on both sides.

5. The nuclear power cable branching device of claim 1, wherein, The front of the bus input and output terminal is in the shape of an open box body. ​ ​ 6. The nuclear power cable branching device of claim 1, wherein ​ 7. The nuclear power plant according to claim 1, wherein ​ 8. The nuclear power plant according to claim 1, wherein ​ The opening of the bus input and output end faces downward.

9. The nuclear power cable branching device of claim 1, wherein, The bottom of the switch box is provided with a fixing step; The fixing step is in the shape of a closed box body; The total height of the switch box and the fixing step is 4U.

10. The nuclear power cable branching device of claim 9, wherein, The side surface of the fixing step is in the shape of a convex character; The front of the fixing step is provided with a ground fixing plate.

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