Parallel output device for parallel connection of battery packs in cabinet

Abstract

The utility model relates to the technical field of energy storage systems, in particular to a parallel output device for parallel connection of battery packs in a cabinet, which comprises a plurality of positive terminals connected with positive copper bars in a parallel box; the positive electrode output binding post penetrates through the front panel and is connected with the positive electrode copper bar; the plurality of negative binding posts are connected with the negative copper bars in the parallel box; and the cathode output binding post passes through the front panel and is connected with the cathode copper bar. In order to solve the problems that operation is relatively tedious and multi-terminal wiring work is difficult to complete when an existing battery cabinet carries out parallel output, the scheme provides a parallel box which can be directly loaded in the battery cabinet, and the parallel box is provided with a plurality of groups of positive binding posts and negative binding posts which are respectively connected with positive and negative electrodes of a battery pack, so that the parallel output of the battery cabinet is realized. The multiple terminals are connected in parallel through the internal copper bars, and finally output is performed through the positive electrode output end and the negative electrode output end, so that the wire arrangement and output processes in the cabinet are realized, and the problem that external multi-terminal connection is relatively tedious is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage system technical field, concretely relates to a parallel output device of battery pack in cabinet parallel connection. BACKGROUND

[0002] The backup energy storage system, also known as uninterrupted power supply system (UPS), is an uninterrupted power supply containing energy storage device. It is mainly used for providing uninterrupted power supply for some devices with high requirements for power stability. When the mains input is normal, the UPS supplies the mains voltage to the load, at this time the UPS is an AC type voltage stabilizer, and it also charges the battery in the machine; when the mains is interrupted (accident power failure), the UPS immediately supplies 220V AC power to the load through the method of inverter switching conversion, so that the load maintains normal work and protects the load software and hardware from damage.

[0003] Generally, the battery pack in the energy storage system is output in series. However, in some scenarios, multiple battery packs may need to be output in parallel to meet specific requirements such as high current output. For this scenario, some existing projects choose to output 2 positive and 2 negative cables from 2 battery cabinets, then parallel connect the 2 positive cables to 1 output positive cable and the 2 negative cables to 1 output negative cable, to achieve the parallel output effect of the battery cabinet.

[0004] However, the inventors found that this output method is relatively cumbersome, and if multiple groups are needed in parallel, it is almost impossible to do parallel fastening operation on the same terminal. UTILITY MODEL CONTENT

[0005] In view of the above problems existing in the prior art, a parallel output device of battery pack in cabinet parallel connection is provided.

[0006] The specific technical solutions are as follows:

[0007] A parallel output device of battery pack in cabinet parallel connection, comprising a parallel box;

[0008] A positive input end is provided on the front panel of the parallel box, and a plurality of positive connection posts are provided in the positive input end;

[0009] The positive connection posts pass through the front panel and connect the positive copper bars in the parallel box;

[0010] A positive output end is also provided on the front panel, and the positive output connection post of the positive output end passes through the front panel and connects the positive copper bar;

[0011] The positive input end is provided on the front panel of the parallel box, and a plurality of positive connecting posts are arranged in the positive input end;

[0012] The negative connecting post penetrates through the front panel and connects the negative copper bar in the parallel box;

[0013] The front panel is also provided with a negative output end, and the negative output connecting post of the negative output end penetrates through the front panel and connects the negative copper bar.

[0014] On the other hand, the positive connecting posts are arranged in sequence along the horizontal direction;

[0015] The main part of the positive copper bar is in the shape of a long strip;

[0016] The positive copper bar is arranged in parallel with the positive connecting post below the part where the positive connecting post is located inside the parallel box;

[0017] The surface of the positive copper bar is arranged in close contact with the inside of the parallel box;

[0018] The positive copper bar extends out a plurality of positive copper bar branches on the side close to the positive connecting post;

[0019] The positive copper bar branches are connected with the positive connecting post one by one through bolts.

[0020] On the other hand, the positive output connecting post penetrates through the front panel to the inside of the parallel box;

[0021] The positive output end is arranged closer to the central position of the front panel relative to the positive input end;

[0022] The positive output end is lower in the height direction relative to the positive input end;

[0023] The positive copper bar extends above the positive output connecting post in the horizontal direction and extends downward to connect the positive copper bar output branch with the positive output connecting post.

[0024] On the other hand, the negative connecting posts are arranged in sequence along the horizontal direction;

[0025] The main part of the negative copper bar is in the shape of a long strip;

[0026] The negative copper bar is arranged in parallel with the negative connecting post below the part where the negative connecting post is located inside the parallel box;

[0027] The surface of the negative copper bar is arranged in close contact with the inside of the parallel box;

[0028] The negative copper bars extend out multiple negative copper bar branches on one side close to the negative terminal post;

[0029] The negative copper bar branches are connected to the negative terminal post one by one through bolts.

[0030] On the other hand, the negative output terminal post passes through the front panel to the inside of the parallel box;

[0031] The negative output terminal is closer to the central position of the front panel relative to the negative input terminal;

[0032] The negative output terminal is lower in the height direction relative to the negative input terminal;

[0033] The negative copper bars extend horizontally above the negative output terminal post and extend downward to connect the negative copper bar output branches to the negative output terminal post.

[0034] On the other hand, the positive input terminal includes a positive input terminal cover plate;

[0035] The positive input terminal cover plate is in the shape of an open rectangular box, and the back and lower part of the positive input terminal cover plate are provided with openings;

[0036] The positive input terminal cover plate is removably covered in front of the positive terminal post; the negative input terminal includes a negative input terminal cover plate;

[0037] The negative input terminal cover plate is in the shape of an open rectangular box, and the back and lower part of the negative input terminal cover plate are provided with openings;

[0038] The negative input terminal cover plate is removably covered in front of the negative terminal post;

[0039] The positive output terminal includes a positive output terminal cover plate;

[0040] The positive output terminal cover plate is in the shape of an open rectangular box, and the back and lower part of the positive output terminal cover plate are provided with openings;

[0041] The positive output terminal cover plate is removably covered in front of the positive output terminal post;

[0042] The negative output terminal includes a negative output terminal cover plate;

[0043] The negative output terminal cover plate is in the shape of an open rectangular box, and the back and lower part of the negative output terminal cover plate are provided with openings;

[0044] The negative output terminal cover plate is removably covered in front of the negative output terminal post.

[0045] In another aspect, the upper and lower ends of the front panel of the parallel box are provided with rearward bending parts;

[0046] Screw holes are arranged on the bending parts;

[0047] The rear shell of the parallel box is fixedly connected with the front panel through the screw holes.

[0048] In another aspect, the two sides of the front panel are provided with mounting side plates which are bent forward from the front panel.

[0049] In another aspect, when the parallel box is mounted on the battery cabinet, the front of the parallel box is provided with a covering panel.

[0050] The above technical solution has the following advantages or beneficial effects:

[0051] In view of the problem that the operation is relatively complicated and it is difficult to complete the multi-terminal wiring work when the existing battery cabinet is subjected to parallel output, in the present solution, a parallel box which can be directly loaded in the battery cabinet is provided, a plurality of groups of positive and negative terminal posts are arranged on the parallel box to connect the positive and negative poles of the battery pack, and the internal copper bars are used for parallel connection, and finally the positive and negative output terminals are used for output, so that the wire arrangement and output process in the cabinet are realized, and the problem of complicated multi-terminal connection outside is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0052] Reference will be made to the accompanying drawings to more fully describe the embodiments of the present application. However, the accompanying drawings are only used for illustration and explanation, and do not constitute a limitation on the scope of the present application.

[0053] Figure 1 is a isometric view of the embodiment of the present application;

[0054] Figure 2 is a rear view of the embodiment of the present application after removing the rear shell;

[0055] Figure 3 is a oblique lower view of the embodiment of the present application;

[0056] Figure 4 is a cabinet panel schematic view of the embodiment of the present application. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0058] 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.

[0059] The utility model will be further described below in combination with the drawings and specific embodiments, but not as the limitation of the utility model.

[0060] The utility model includes:

[0061] A kind of parallel output device of battery pack in cabinet parallel connection, as shown in Figure 1 、 2 It includes parallel box 1;

[0062] Positive input end 2 is provided on the front panel of parallel box 1, and multiple positive terminal posts 21 are provided in positive input end 2;

[0063] Positive terminal post 21 passes through the front panel and connects the positive copper bar 3 in parallel box;

[0064] Positive output end 4 is also provided on the front panel, and the positive output terminal post 41 of positive output end 4 passes through the front panel and connects the positive copper bar 3;

[0065] Negative input end 5 is provided on the front panel of parallel box 1, and multiple negative terminal posts 51 are provided in negative input end 5;

[0066] Negative terminal post 51 passes through the front panel and connects the negative copper bar 6 in parallel box 1;

[0067] Negative output end 7 is also provided on the front panel, and the negative output terminal post 71 of negative output end 7 passes through the front panel and connects the negative copper bar 6.

[0068] Specifically, for the problem that operation is relatively cumbersome when parallel output is carried out for existing battery cabinet, and it is difficult to complete multi-terminal wiring work, in the embodiment, a parallel box 1 that can be directly loaded in battery cabinet is provided, and multiple sets of positive terminal posts 21 and negative terminal posts 51 are provided on the parallel box 1 to connect the positive and negative poles of battery pack respectively.

[0069] Generally speaking, the battery cabinet is a cabinet body arranged in the height direction, and multiple battery packs are stacked in the cabinet body through guide rail structure, and corresponding circuit topology structure is designed between battery packs according to specific design requirements, such as discharge voltage and discharge current, and connected through copper bar. Subsequently, in order to realize parallel output of multiple battery packs, the cable of battery pack is led out to parallel box 1 below the cabinet, and each positive cable or negative cable is connected to a positive terminal post 21 or negative terminal post 51 respectively.

[0070] In one embodiment, the positive terminal posts 21 and the negative terminal posts 51 are each four, realizing four parallel connection of battery packs.

[0071] In the parallel box 1, the positive terminal posts 21 pass through the front panel and connect the positive copper bars 3 in the parallel box, and the negative terminal posts 51 pass through the front panel and connect the negative copper bars 6 in the parallel box 1, thereby realizing parallel connection, and finally output through the positive output end 4 and the negative output end 7.

[0072] The above arrangement realizes the wiring and output process in the cabinet, avoiding the problem of more cumbersome multi-terminal connection outside.

[0073] In one embodiment, the positive terminal posts 21 are arranged in the horizontal direction in sequence;

[0074] The main part of the positive copper bar 3 is in the shape of a long strip;

[0075] The positive copper bar 3 is arranged in parallel with the positive terminal post 21 below the part of the positive terminal post 21 located inside the parallel box 1;

[0076] The surface of the positive copper bar 3 is arranged in the inside of the parallel box 1;

[0077] The positive copper bar 3 extends out multiple positive copper bar branches on the side close to the positive terminal post 21;

[0078] The positive copper bar branches are connected to the positive terminal posts 21 one by one by bolts.

[0079] Specifically, to realize a more compact wiring layout, in this embodiment, a rectangular positive input end 2 is arranged, and the positive input end 2 has multiple positive terminal posts 21 arranged in sequence in the horizontal direction.

[0080] The main part of the positive copper bar 3 is in the shape of a long strip, and the surface is arranged on the lower side of the positive terminal post 21 in the inside of the parallel box 1 in the vertical direction. The positive copper bar branches extend upward on the side of the positive copper bar 3 close to the positive terminal post 21, and the positive copper bar branches are provided with openings, which are sleeved on the corresponding positive terminal posts 21 and then screwed on the positive terminal posts 21 to compress the positive copper bar branches.

[0081] In actual production, the main part of the positive copper bar 3 and the positive copper bar branches are usually a bifurcated structure formed integrally.

[0082] In one embodiment, the positive output terminal post 41 passes through the front panel to the inside of the parallel box 1;

[0083] The positive output end 4 is arranged closer to the central position of the front panel relative to the positive input end 2;

[0084] The positive output end 4 is lower than the positive input end 2 in the height direction;

[0085] The positive copper bar 3 extends horizontally above the positive output terminal 41 and downwardly to form a positive copper bar output branch connected with the positive output terminal 41.

[0086] Specifically, after the connection of the positive input end 2 is realized, the positive copper bar 3 continues to extend to the central direction of the parallel box 1. The positive output end 4 is arranged closer to the central position of the front panel relative to the positive input end 2 and is lower in the height direction, and the offset in the height direction is generally greater than the width of the positive copper bar 3.

[0087] Then, after the positive copper bar 3 continues to extend to the central direction of the parallel box 1, it reaches above the positive output terminal 41. Accordingly, the positive copper bar 3 is processed or bent downwardly to form a positive copper bar output branch connected with the positive output terminal 41. The positive copper bar output branch is provided with an opening, is sleeved on the positive output terminal 41 and is then screwed on the positive output terminal 41 to press the positive copper bar output branch.

[0088] In an embodiment, the negative terminals 51 are arranged in sequence in the horizontal direction;

[0089] The main part of the negative copper bar 6 is in the shape of a long and thin sheet;

[0090] The negative copper bar 6 is arranged in parallel below the part of the negative terminals 51 located inside the parallel box 1 relative to the negative terminals 51;

[0091] The surface of the negative copper bar 6 is arranged to adhere to the inside of the parallel box 1;

[0092] The negative copper bar 6 extends out of multiple negative copper bar branches on the side close to the negative terminals 51;

[0093] The negative copper bar branches are connected with the negative terminals 51 one by one through bolts.

[0094] Specifically, in order to realize a more compact wiring layout, in the embodiment, a rectangular negative input end 5 is arranged, and the negative input end 5 has multiple negative terminals 51 arranged in sequence in the horizontal direction.

[0095] The main part of the negative copper bar 6 is in the shape of a long and thin sheet, and the surface is arranged to adhere to the inside of the parallel box 1 on the lower side of the negative terminals 51 in the vertical direction. The negative copper bar branches extend upwardly on the side of the negative copper bar 6 close to the negative terminals 51, the negative copper bar branches are provided with openings, are sleeved on the corresponding negative terminals 51 and are then screwed on the negative terminals 51 to press the negative copper bar branches.

[0096] In the actual manufacturing process, the main body part and the branch of the negative copper bar 6 are usually an integral bifurcated structure.

[0097] In one embodiment, the negative output terminal post 71 reaches the inner side of the parallel box 1 through the front panel;

[0098] The negative output end 7 is arranged closer to the central position of the front panel relative to the negative input end 5;

[0099] The negative output end 7 is lower in the height direction relative to the negative input end 5;

[0100] The negative copper bar 6 extends horizontally above the negative output terminal post 71 and downwardly extends a negative copper bar output branch to be connected with the negative output terminal post 71.

[0101] Specifically, after the connection of the negative input end 5 is realized, the negative copper bar 6 continues to extend to the central direction of the parallel box 1. The negative output end 7 is arranged closer to the central position of the front panel relative to the negative input end 5 and is lower in the height direction, and the offset in the height direction is usually greater than the width of the negative copper bar 6.

[0102] Then, after the negative copper bar 6 continues to extend to the central direction of the parallel box 1, it reaches above the negative output terminal post 71. Accordingly, the negative copper bar 6 is processed or bent downwardly to form a negative copper bar output branch to be connected with the negative output terminal post 71. The negative copper bar output branch is provided with an opening, is sleeved on the negative output terminal post 71, and is then screwed on the negative output terminal post 71 to press the negative copper bar output branch.

[0103] In one embodiment, as shown in Figure 3 The positive input end 2 includes a positive input end cover plate 21.

[0104] The positive input end cover plate 22 is in the shape of an open rectangular box, and the back and lower side of the positive input end cover plate 22 are provided with openings.

[0105] The positive input end cover plate 22 is removably covered in front of the positive terminal post 21.

[0106] The negative input end 5 includes a negative input end cover plate 52.

[0107] The negative input end cover plate 52 is in the shape of an open rectangular box, and the back and lower side of the negative input end cover plate 52 are provided with openings.

[0108] The negative input end cover plate 52 is removably covered in front of the negative terminal post 51.

[0109] The positive output end 4 includes a positive output end cover plate 42.

[0110] The positive output end cover plate 42 is in the shape of an open rectangular box, and the back and lower part of the positive output end cover plate 42 is provided with an opening;

[0111] The positive output end cover plate 42 is removably covered in front of the positive output terminal post 41;

[0112] The negative output end 7 comprises a negative output end cover plate 72;

[0113] The negative output end cover plate 72 is in the shape of an open rectangular box, and the back and lower part of the negative output end cover plate 72 is provided with an opening;

[0114] The negative output end cover plate 72 is removably covered in front of the negative output terminal post 71.

[0115] In one embodiment, the upper and lower ends of the front panel of the parallel box 1 are provided with a rearward bending part 11;

[0116] The bending part is provided with a screw hole;

[0117] The back shell 12 of the parallel box is fixedly connected with the front panel through the screw hole.

[0118] Specifically, in order to facilitate the rapid maintenance of the equipment, in the machining process of the front panel, first, the plate is cut at the corners to remove part of the four corners to form a plate in the shape of a cross, then the two sides of the long side are bent and punched towards the side where the copper bar is to be installed to form the bending part 11, and the corresponding position on the back shell 12 is also punched. When the copper bar is fixed on the back of the front panel during actual installation, the back shell 12 is put on and the screws are tightened to combine,

[0119] In one embodiment, the two sides of the front panel are provided with mounting side plates 13, which are bent from the front panel towards the front.

[0120] Correspondingly, after the plate is cut at the corners, the protruding part of the short side is bent towards the front by a predetermined length and punched to form the mounting side plate 13. When the parallel box 1 is installed in the cabinet, it can be fixed through the mounting hole on the side and the screw.

[0121] In one embodiment, as Figure 4 shown, when the parallel box 1 is installed on the battery cabinet, the front of the parallel box 1 is provided with a covering panel 8.

[0122] Specifically, in order to achieve a better hidden installation effect, in the present embodiment, the length of the mounting side plate 13 is appropriately lengthened, so that after the screw is screwed into the corresponding hole position of the cabinet, the mounting position of the front panel moves slightly deeper into the cabinet body, and then the covering panel 8 is arranged in front of the parallel box 1 to block it, achieving hidden installation.

[0123] 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 parallel output device for battery packs connected in parallel within a cabinet, characterized in that, Including parallel boxes; The front panel of the parallel box is provided with a positive input terminal, and the positive input terminal is provided with multiple positive terminals. The positive terminal passes through the front panel and connects to the positive copper busbar inside the parallel box; The front panel is also provided with a positive output terminal, and the positive output terminal of the positive output terminal passes through the front panel and is connected to the positive copper busbar; The front panel of the parallel box is provided with a negative input terminal, and the negative input terminal is provided with multiple negative terminals. The negative terminal passes through the front panel and connects to the negative copper busbar inside the parallel box; The front panel is also provided with a negative output terminal, and the negative output terminal of the negative output terminal passes through the front panel and is connected to the negative copper busbar.

2. The parallel output device according to claim 1, characterized in that, The positive terminal is arranged sequentially along the horizontal direction; The main body of the positive electrode copper busbar is in the shape of a long, thin sheet; The positive copper busbar is arranged parallel to the positive terminal and below the portion of the positive terminal located inside the parallel box; The surface of the positive electrode copper busbar is attached to the inner side of the parallel box; The positive copper busbar has multiple positive copper busbar branches extending from the side closest to the positive terminal; The positive copper busbar branches are connected to the positive terminals one by one by bolts.

3. The parallel output device according to claim 2, characterized in that, The positive output terminal passes through the front panel and reaches the inside of the parallel box; The positive output terminal is positioned closer to the center of the front panel than the positive input terminal. The positive output terminal is lower in height relative to the positive input terminal; The positive copper busbar extends horizontally above the positive output terminal and extends downward to form a positive copper busbar output branch that connects to the positive output terminal.

4. The parallel output device according to claim 1, characterized in that, The negative terminal is arranged sequentially along the horizontal direction; The main body of the negative electrode copper busbar is in the shape of a long, thin sheet; The negative copper busbar is arranged parallel to the negative terminal and below the portion of the negative terminal located inside the parallel box; The surface of the negative electrode copper busbar is fitted to the inner side of the parallel box; The negative copper busbar has multiple negative copper busbar branches extending from the side closest to the negative terminal. The negative copper busbar branch is connected to the negative terminal one by one by bolts.

5. The parallel output device according to claim 4, characterized in that, The negative output terminal passes through the front panel and reaches the inside of the parallel box; The negative output terminal is positioned closer to the center of the front panel than the negative input terminal. The negative output terminal is lower in height relative to the negative input terminal; The negative copper busbar extends horizontally above the negative output terminal and extends downward to form a negative copper busbar output branch that connects to the negative output terminal.

6. The parallel output device according to claim 1, characterized in that, The positive input terminal includes a positive input terminal cover; The positive input terminal cover is in the shape of an open cuboid box, and openings are provided on the back and bottom of the positive input terminal cover. The positive input terminal cover is removably positioned over the front of the positive terminal. The negative input terminal includes a negative input terminal cover plate; The negative input terminal cover is in the shape of an open cuboid box, and openings are provided on the back and bottom of the negative input terminal cover. The negative input terminal cover is removably positioned over the front of the negative terminal. The positive output terminal includes a positive output terminal cover plate; The positive output terminal cover is in the shape of an open cuboid box, and openings are provided on the back and bottom of the positive output terminal cover. The positive output terminal cover is removably placed over the front of the positive output terminal; The negative output terminal includes a negative output terminal cover plate; The negative output terminal cover is in the shape of an open cuboid box, and openings are provided on the back and bottom of the negative output terminal cover. The negative output terminal cover is removably positioned over the front of the negative output terminal.

7. The parallel output device according to claim 1, characterized in that, The front panel of the parallel box has rearward-facing bends at both the top and bottom. The bent portion is provided with screw holes; The back shell of the parallel box is fixedly connected to the front panel through the screw holes.

8. The parallel output device according to claim 1, characterized in that, Mounting side panels are provided on both sides of the front panel, and the mounting side panels are bent forward from the front panel.

9. The parallel output device according to claim 1, characterized in that, When the parallel box is installed on the battery cabinet, a cover panel is provided in front of the parallel box.

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