BMU fixing structure and energy storage battery plug-in box

Abstract

The utility model provides a BMU fixing structure and an energy storage battery plug-in box, and the BMU fixing structure comprises a fixed frame, a connecting piece, and a sliding frame. The fixing frame comprises a mounting plate and two connecting plates; two sides of the mounting plate are respectively used for mounting two BMUs; the two connecting plates are connected to the two ends of the mounting plate respectively; the number of the connecting pieces is at least two, and each connecting plate is connected with at least one connecting piece. The two sliding frames are installed in the energy storage battery plug-in box in a spaced mode, sliding grooves are formed in the sliding frames, and the connecting pieces are arranged in the sliding grooves in a sliding mode. The two BMUs are installed on the two sides of the installation plate, space is saved, a sliding groove is formed in the sliding frame, the connecting piece is arranged in the sliding groove in a sliding mode, the connecting piece is pulled to slide along the sliding groove, when a wire harness connector needs to be disassembled and installed, the connecting plate slides outwards, the operation space is enlarged, after the wire harness connector is installed, the connecting plate is pushed in, and then the wire harness connector is disassembled and installed. Therefore, the convenience of installation and maintenance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a BMU fixing structure and an energy storage battery insertion box. Background Technique

[0002] With the development of high-voltage DC side technology, the power supply method with battery packs has become the mainstream energy method. The energy density and capacity of power batteries in the energy storage industry are getting larger and larger, the number of modules is increasing, and the space inside the battery pack is becoming more and more compact. This poses higher requirements for the layout space of electrical components of other non-cell modules and the miniaturization of electrical components. In particular, it brings many problems to the layout position and fixing method of the BMU (Battery Management Unit) in the energy storage battery insertion box.

[0003] The traditional solution is to place only one BMU in an energy storage battery insertion box. The BMU fixing bracket is a simple screw-fixing method. When placing two BMUs, there is a limited assembly space, resulting in difficult assembly. Due to the limitation of the BMU placement position, when unplugging and plugging the wire harness connectors that are inserted into the BMU, the hand operation space is small, which is very difficult to operate in actual operation. At the same time, it brings inconvenience to the later maintenance of the BMU, and puts forward higher requirements for the installation process and after-sales personnel. Summary of the Utility Model

[0004] In view of this, the utility model provides a BMU fixing structure and an energy storage battery insertion box to solve the technical problems of limited assembly space and inconvenient installation and maintenance when placing two BMUs as mentioned in the above background technique.

[0005] The technical solution of the utility model is realized as follows:

[0006] In the first aspect, the utility model provides a BMU fixing structure, which is placed in an energy storage battery insertion box and used to fix two BMUs. The BMU fixing structure includes a fixing frame, a connecting piece and a sliding frame, wherein:

[0007] The fixing frame includes a mounting plate and two connecting plates; both sides of the mounting plate are respectively used to mount the two BMUs; the two connecting plates are respectively connected to both ends of the mounting plate;

[0008] There are at least two connecting pieces, and at least one connecting piece is connected to each connecting plate;

[0009] The two sliding frames are installed in the energy storage battery insertion box at intervals, and a chute is arranged on the sliding frame, and the connecting piece is slidably arranged in the chute.

[0010] In some alternative embodiments, preferably, there are two sliding grooves, and the two sliding grooves are arranged in parallel on the sliding frame.

[0011] In some alternative embodiments, preferably, the sliding frame includes a fixed folding edge and a sliding plate; the fixed folding edge is used for connecting with the energy storage battery insertion box, and the two fixed folding edges are away from each other; the sliding plate is perpendicularly connected to the fixed folding edge, and the sliding groove is arranged on the sliding plate.

[0012] In some alternative embodiments, preferably, the sliding groove is L-shaped, and the sliding groove includes a horizontal groove and a vertical groove that communicate with each other. The vertical groove is arranged below the horizontal groove, and the vertical groove is connected to one end of the horizontal groove close to the fixed folding edge.

[0013] In some alternative embodiments, preferably, the sliding frame further includes a supporting folding edge, and the supporting folding edge is arranged at the bottom of the sliding plate and away from the fixed folding edge for supporting the bottom of the connecting plate.

[0014] In some alternative embodiments, preferably, there are two connecting holes on the connecting plate, the connecting member is a pin, and the connecting member passes through the sliding groove and is connected to the connecting hole.

[0015] In some alternative embodiments, preferably, there are mounting holes on the mounting plate. The two BMU are the first BMU and the second BMU respectively. There is a first fixing hole on the first BMU, and a second fixing hole on the second BMU;

[0016] It further includes a connecting bolt and a connecting nut. The connecting bolt passes through the first fixing hole, the mounting hole and the second fixing hole and is connected to the connecting nut.

[0017] In a second aspect, the present invention provides an energy storage battery insertion box, which includes an insertion box body and the BMU fixing structure described in the first aspect located inside the insertion box body, and the sliding frame is connected to the insertion box body.

[0018] In some alternative embodiments, preferably, it further includes a maintenance panel. The maintenance panel is provided with a maintenance window, the insertion box body is provided with an opening, and the maintenance panel is connected to the edge of the opening.

[0019] In some alternative embodiments, preferably, it further includes a mounting bracket. The mounting bracket is fixed inside the insertion box body, and the BMU fixing structure is installed in the space between the mounting bracket and the opening, and the sliding frame is connected to the mounting bracket.

[0020] The BMU fixing structure and energy storage battery insertion box of the present utility model have the following beneficial effects compared with the prior art:

[0021] (1) Two BMUs are respectively installed on both sides of the mounting plate, saving space. At least one of the connecting pieces is connected to each of the connecting plates. A chute is provided on the sliding frame, and the connecting piece is slidably arranged in the chute. By pulling the connecting piece to slide along the chute, when it is necessary to disassemble and install the wire harness connector, the connecting plate slides outwards to increase the operating space. After installing the wire harness connector, push the connecting plate in, thereby improving the convenience of installation and maintenance;

[0022] (2) There are two chutes provided through the chute, and the two chutes are arranged in parallel on the sliding frame. The setting of two chutes on each sliding frame has better guiding properties, making the sliding of the connecting piece more stable and improving the stability and reliability of the device;

[0023] (3) Through the chute being L-shaped, the chute includes a horizontal groove and a vertical groove that are interconnected. The vertical groove is arranged below the horizontal groove, and the vertical groove is connected to one end of the horizontal groove close to the fixed fold. When the connecting piece slides to the end of the horizontal groove far from the vertical groove, the mounting plate moves to the outermost side. When the connecting piece slides into the vertical groove, the mounting plate moves to the innermost side. By arranging the vertical groove below the horizontal groove, the connecting piece can slide down to the bottom of the vertical groove under the action of gravity, thereby installing the fixing frame and the two BMUs in place;

[0024] (4) By providing a support fold, the support fold is arranged at the bottom of the sliding plate and is arranged away from the fixed fold, and is used to support the bottom of the connecting plate. After the connecting plate slides to the bottom of the vertical groove along with the connecting piece, the support fold supports the bottom of the connecting plate, so that the fixing frame and the two BMUs can be placed more stably, improving the stability and reliability of the device;

[0025] (5) Through the maintenance panel being provided with a maintenance window, the insertion box body is provided with an opening, the maintenance panel is connected to the edge of the opening, and the maintenance window communicates with the opening. When it is necessary to disassemble and install the wire harness connector, the connecting plate slides outwards so that the two BMUs are pulled out from the opening and the maintenance window to increase the operating space. After installation, push the BMUs into the insertion box body from the opening and the maintenance window, and there is no need to disassemble the maintenance window, and installation and maintenance can be carried out quickly. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 Structural schematic diagram of the BMU fixing structure (when the sliding frame is pushed in) of the present invention;

[0028] Figure 2 Exploded view of the BMU fixing structure of the present invention;

[0029] Figure 3 Structural schematic diagram of the fixing frame of the present invention;

[0030] Figure 4 Structural schematic diagram of the sliding frame of the present invention;

[0031] Figure 5 Structural schematic diagram of the BMU fixing structure (when the sliding frame slides out) of the present invention;

[0032] Figure 6 Structural schematic diagram of the energy storage battery insertion box of the present invention.

[0033] Explanation of reference numerals: 1 - fixing frame, 2 - connecting piece, 3 - sliding frame, 4 - connecting bolt, 5 - connecting nut; 100 - first BMU, 101 - first fixing hole, 200 - second BMU, 201 - second fixing hole, 300 - insertion box body, 400 - maintenance panel, 401 - maintenance window, 500 - installation bracket;

[0034] 11 - mounting plate, 111 - mounting hole, 12 - connecting plate, 121 - connecting hole;

[0035] 31 - sliding plate, 311 - sliding groove, 3111 - horizontal groove, 3112 - vertical groove, 32 - fixing flange, 33 - supporting flange. Detailed implementation manners

[0036] The following will describe the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0037] Embodiment 1

[0038] Referring to Figures 1 - 5 as shown, in this embodiment, a BMU fixing structure is proposed, which is placed in the energy storage battery plug box and used to fix the first BMU 100 and the second BMU 200. The BMU fixing structure includes a fixing frame 1, a connecting member 2 and a sliding frame 3, where:

[0039] The fixing frame 1 includes a mounting plate 11 and two connecting plates 12; both sides of the mounting plate 11 are used to mount the first BMU 100 and the second BMU 200; the two connecting plates 12 are respectively connected to both ends of the mounting plate 11, and the connecting plate 12 can be perpendicular to the mounting plate 11 to facilitate the manufacture of the fixing frame 1. The mounting plate 11 and the two connecting plates 12 can be integrally bent and formed, which improves the manufacturing convenience and the strength of the fixing frame 1;

[0040] There are at least two connecting members 2, and at least one connecting member 2 is connected to each connecting plate 12;

[0041] The two sliding frames 3 are spaced apart and installed in the energy storage battery plug box. The two sliding frames 3 are arranged symmetrically. A sliding groove 311 is provided on the sliding frame 3, and the connecting member 2 is slidably arranged in the sliding groove 311.

[0042] In the BMU fixing structure proposed in this embodiment, the first BMU 100 and the second BMU 200 are installed on both sides of the mounting plate 11, saving space. At least one connecting member 2 is connected to each connecting plate 12. A sliding groove 311 is provided on the sliding frame 3, and the connecting member 2 is slidably arranged in the sliding groove 311. By pulling the connecting member 2 to slide along the sliding groove 311, when it is necessary to disassemble and install the wire harness connector, the connecting plate 12 slides outwards to increase the operation space. After installing the wire harness connector, the connecting plate 12 is pushed in, thereby improving the convenience of installation and maintenance.

[0043] In some embodiments, there are two sliding grooves 311, and the two sliding grooves 311 are arranged in parallel on the sliding frame 3. By providing two sliding grooves 311 and arranging the two sliding grooves 311 in parallel on the sliding frame 3, the setting of the two sliding grooves 311 on each sliding frame 3 has better directivity, making the sliding of the connecting member 2 more stable and improving the stability and reliability of the device.

[0044] In some embodiments, the sliding frame 3 includes a fixed flange 32 and a sliding plate 31; the fixed flange 32 is used for connecting with the energy storage battery insertion box, and the two fixed flanges 32 are away from each other; the sliding plate 31 is vertically connected to the fixed flange 32, and the sliding groove 311 is arranged on the sliding plate 31. By vertically connecting the sliding plate 31 with the fixed flange 32 and connecting the fixed flange 32 with the energy storage battery insertion box, the sliding plate 31 is arranged along the installation direction of the BMU, and the sliding groove 311 is arranged on the sliding plate 31. When the connecting member 2 slides along the sliding groove 311, it drives the connecting plate 12 and the mounting plate 11 to move together, thereby driving the two BMUs on the mounting plate 11 to be pulled out and inserted.

[0045] In some embodiments, the sliding groove 311 is L-shaped, the sliding groove 311 includes a horizontal groove 3111 and a vertical groove 3112 which are communicated with each other, the vertical groove 3112 is arranged below the horizontal groove 3111, and the vertical groove 3112 is connected to one end of the horizontal groove 3111 close to the fixed flange 32. When the connecting member 2 slides to the end of the horizontal groove 3111 away from the vertical groove 3112, the mounting plate 11 moves to the outermost side. When the connecting member 2 slides into the vertical groove 3112, the mounting plate 11 moves to the innermost side. By arranging the vertical groove 3112 below the horizontal groove 3111, the connecting member 2 can slide down to the bottom of the vertical groove 3112 under the action of gravity, so as to install the fixing frame 1 and the two BMUs in place.

[0046] In some embodiments, the sliding frame 3 further includes a supporting flange 33, the supporting flange 33 is arranged at the bottom of the sliding plate 31 and away from the fixed flange 32, and is used for supporting the bottom of the connecting plate 12. By arranging the supporting flange 33 at the bottom of the sliding plate 31 and away from the fixed flange 32 for supporting the bottom of the connecting plate 12, after the connecting plate 12 slides to the bottom of the vertical groove 3112 along with the connecting member 2, the supporting flange 33 supports the bottom of the connecting plate 12, so that the fixing frame 1 and the two BMUs can be placed more stably, improving the stability and reliability of the device.

[0047] In some embodiments, two connecting holes 121 are arranged on the connecting plate 12, the connecting member 2 is a pin, and the connecting member 2 passes through the sliding groove 311 and is connected with the connecting holes 121. The space is small and it is not convenient to use bolt connection. By using a pin as the connecting member 2, the connecting member 2 passes through the sliding groove 311 and is connected with the connecting holes 121. The pin requires a small operating space, which is convenient for installation and disassembly.

[0048] In some embodiments, mounting holes 111 are provided on the mounting plate 11, a first fixing hole 101 is provided on the first BMU 100, and a second fixing hole 201 is provided on the second BMU 200; the BMU fixing structure further includes a connecting bolt 4 and a connecting nut 5, and the connecting bolt 4 passes through the first fixing hole 101, the mounting hole 111 and the second fixing hole 201 and is connected to the connecting nut 5. By passing the connecting bolt 4 through the first fixing hole 101, the mounting hole 111 and the second fixing hole 201 and connecting it to the connecting nut 5, the first BMU 100 and the second BMU 200 are installed on both sides of the mounting plate 11 at the same time, saving space and avoiding the need for more connecting bolts 4 when installing on different plates, thus improving the convenience of installation.

[0049] The working principle of the BMU fixing structure is as follows: by passing the connecting bolt 4 through the first fixing hole 101, the mounting hole 111 and the second fixing hole 201 and connecting it to the connecting nut 5, the first BMU 100 and the second BMU 200 are installed on both sides of the mounting plate 11; at least one of the connecting members 2 is connected to each of the connecting plates 12, a sliding groove 311 is provided on the sliding frame 3, the connecting member 2 is slidably disposed in the sliding groove 311, and the sliding groove 311 is L-shaped. By pulling the connecting member 2 to slide along the sliding groove 311, when it is necessary to disassemble and install the wire harness connector, the connecting plate 12 slides outwards with the connecting member 2, pulling out the first BMU 100 and the second BMU 200 to increase the operating space. After installing the wire harness connector, the connecting plate 12 slides inwards with the connecting member 2 to push the first BMU 100 and the second BMU 200 in, thereby improving the convenience of installation and maintenance.

[0050] Embodiment 2

[0051] This embodiment provides an energy storage battery plug-in box, in combination with Figure 6 as shown, including a plug-in box body 300 and the BMU fixing structure described in the first aspect located inside the plug-in box body 300, and the sliding frame 3 is connected to the plug-in box body 300.

[0052] In some embodiments, the energy storage battery cassette further includes a maintenance panel 400. The maintenance panel 400 is provided with a maintenance window 401. The cassette body 300 is provided with an opening, and the maintenance panel 400 is connected to the edge of the opening. Through the maintenance window 401 provided on the maintenance panel 400, the opening provided on the cassette body 300, and the connection of the maintenance panel 400 to the edge of the opening, the maintenance window 401 communicates with the opening. When it is necessary to disassemble and install the wire harness connector, the connecting plate 12 slides outwards so that the two BMU are pulled out from the opening and the maintenance window 401, increasing the operation space. After installation, the BMU is pushed into the cassette body 300 from the opening and the maintenance window 401, and there is no need to disassemble the maintenance window 401, and the installation and maintenance can be carried out quickly.

[0053] In some embodiments, the energy storage battery cassette further includes a mounting bracket 500. The mounting bracket 500 is fixed inside the cassette body 300. The BMU fixing structure is installed in the space between the mounting bracket 500 and the opening, and the sliding frame 3 is connected to the mounting bracket 500. Through the connection of the sliding frame 3 to the mounting bracket 500, the installation of the BMU fixing structure is realized, so that the BMU fixing structure is installed in the space between the mounting bracket 500 and the opening.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A BMU fixing structure is placed in an energy storage battery cassette and is used to fix two BMUs. It is characterized in that The BMU fixing structure includes a fixing frame, a connecting member, and a sliding frame, where: The fixing frame includes a mounting plate and two connecting plates; both sides of the mounting plate are respectively used for mounting two of the BMUs; the two connecting plates are respectively connected to two ends of the mounting plate; There are at least two of the connecting members, and at least one of the connecting members is connected to each of the connecting plates; The two sliding frames are installed in the energy storage battery insertion box at intervals, a chute is provided on the sliding frame, and the connecting member is slidably arranged in the chute.

2. The BMU fixing structure according to claim 1, characterized in that, There are two of the chutes, and the two chutes are arranged in parallel on the sliding frame.

3. The BMU fixing structure according to claim 2, characterized in that, The sliding frame includes a fixed flange and a sliding plate; the fixed flange is used for connecting with the energy storage battery insertion box, and the two fixed flanges are away from each other; the sliding plate is vertically connected to the fixed flange, and the chute is arranged on the sliding plate.

4. The BMU fixing structure according to claim 3, characterized in that, The chute is L-shaped, the chute includes a horizontally connected horizontal groove and a vertical groove, the vertical groove is arranged below the horizontal groove, and the vertical groove is connected to one end of the horizontal groove close to the fixed flange.

5. The BMU fixing structure according to claim 4, characterized in that, The sliding frame further includes a supporting flange, the supporting flange is arranged at the bottom of the sliding plate and away from the fixed flange, and is used for supporting the bottom of the connecting plate.

6. The BMU fixing structure according to claim 1, characterized in that Two connecting holes are provided on the connecting plate, the connecting member uses a pin, and the connecting member passes through the chute and is connected to the connecting hole.

7. The BMU fixing structure according to claim 1, characterized in that, Mounting holes are provided on the mounting plate, the two BMUs are respectively a first BMU and a second BMU, a first fixing hole is provided on the first BMU, and a second fixing hole is provided on the second BMU; It further includes a connecting bolt and a connecting nut, the connecting bolt passes through the first fixing hole, the mounting hole, and the second fixing hole, and is connected to the connecting nut.

8. An energy storage battery cassette, characterized in that, It includes an insertion box body and the BMU fixing structure according to any one of claims 1-7 located in the insertion box body, and the sliding frame is connected to the insertion box body.

9. The energy storage battery cassette according to claim 8, wherein It further includes a maintenance panel, the maintenance panel is provided with a maintenance window, the insertion box body is provided with an opening, and the maintenance panel is connected to the edge of the opening.

10. The energy storage battery cassette according to claim 9, wherein, It further includes a mounting bracket, the mounting bracket is fixed in the insertion box body, the BMU fixing structure is installed in the space between the mounting bracket and the opening, and the sliding frame is connected to the mounting bracket.

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