An energy storage battery pack

Abstract

The utility model provides a kind of energy storage battery pack, including shell, cover is located the outside of the battery module, the first opening is set in the position of the bottom plate on the shell, the edge of the first opening is connected with the bottom plate, the second opening is set in the position of the front end of the battery module on the shell, the front end panel support is embedded in the second opening, the plane of the first opening is perpendicular to the plane of the second opening;BMU cover plate, embedded in the first opening, BMU body and fire detector are integrated on the BMU cover plate;The utility model integrates fuse module and connector module on front end panel support, saves independent fuse support and connector support, reduces process step, and more space is left for the connection of copper bar and wiring harness in battery pack, improves electrical safety and product safety.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage battery pack technology, and specifically relates to an energy storage battery pack. Background Technology

[0002] In the general assembly process of energy storage battery pack structural design, the fuse module, BMU module, connector module and BMU cover plate module are all independent modules, and each module requires pre-processing and installation of corresponding accessories. This involves many materials, many process steps, and complex operation, and the probability of problems in product process control is relatively higher.

[0003] Specifically, such as Figure 1 As shown, in the fuse module of a typical energy storage battery pack, the fuse body 410 is fixed to the sheet metal bracket 10 by an insulating column, and the two ends are connected to the soft copper busbar 20 in series at the total positive terminal of the battery pack. There are 5 process steps involved and 8 kinds of materials involved.

[0004] like Figure 2 As shown, in the BMU module, to facilitate the removal and maintenance of the BMU body 800 and the fire detector 900 from the whole unit, the general design is to fix the BMU body 800 and the fire detector 900 to the sheet metal bracket 1 30. The sheet metal bracket 1 30 is fastened to the sheet metal bracket 2 40. The sheet metal bracket 2 40 serves as a base and is fixed to the front end of the battery pack. The BMU body 800 and the fire detector 900 can be taken out through the window of the BMU cover by loosening the screws of the sheet metal bracket 1 30 and the sheet metal bracket 2 40. This part involves 4 process steps and 7 types of materials.

[0005] like Figure 3 As shown, in the connector module, the main positive connector 510, the main negative connector 520, the MSD530, and the communication connector 1 540 and the communication connector 2 550 are fixed on the sheet metal bracket 3 50. The connectors are connected in series in the circuit by soft copper busbars or wire harnesses. The sheet metal bracket 3 50 is then fixed to the top cover by screws, thereby fixing the main positive connector 510, the main negative connector 520, the MSD530, and the communication connector 1 540 and the communication connector 2 550. This part involves 6 process steps and 9 types of materials.

[0006] In the BMU cover module, the front face of the top cover has reserved connector windows and BMU windows. After the battery pack is covered with the top cover, the BMU body and fire detector can be taken out through the BMU window for maintenance. This part involves two process steps and four types of materials.

[0007] In addition, regarding the installation structure of modules such as explosion-proof valves and fire nozzles, the explosion-proof valves and fire nozzles do not need to be structurally connected to the inside of the battery pack. They are installed on a BMU cover plate, and the BMU cover plate is then sealed and fixed at the corresponding reserved window position. They can also be disassembled separately to repair the BMU body and fire detector inside the battery pack. This part involves 3 process steps and 4 types of materials.

[0008] As can be seen from the above, by breaking down the traditional battery pack structure design and process steps, it involves as many as 20 main process steps and more than 30 kinds of materials. With so many process steps and materials, the process and material costs will increase accordingly. It will also make the overall structure more crowded, making it difficult to ensure the electrical safety between adjacent components, resulting in relatively high management difficulty and high product risk costs. Summary of the Invention

[0009] To address the shortcomings of the existing technology, this utility model provides an energy storage battery pack that integrates the fuse module and connector module on the front panel bracket, eliminating the need for separate fuse brackets and connector brackets, reducing process steps, freeing up more space for the connection of copper busbars and wiring harnesses within the battery pack, and improving electrical safety and product safety.

[0010] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides an energy storage battery pack, comprising: Base plate; The battery module is mounted on the base plate; A front panel bracket is assembled on the front end of the battery module. The front panel bracket integrates a fuse module and a connector module. A first opening is provided on the front panel bracket. A housing is provided on the outside of the battery module. A first opening is provided on the housing corresponding to the position of the bottom plate. The edge of the first opening is connected to the bottom plate. A second opening is provided on the housing corresponding to the position of the front end of the battery module. The front panel bracket is embedded in the second opening. The plane where the first opening is located is perpendicular to the plane where the second opening is located. The BMU cover plate is embedded in the first opening, and the BMU cover plate integrates the BMU body and the fire detector.

[0011] In some implementations, the battery module includes a support frame and multiple battery packs assembled together, wherein the support frame is connected to a portion of the battery pack corresponding to the position of the front panel bracket; The support frame is provided with a plurality of first positioning through holes, and the front panel bracket is provided with a plurality of first positioning posts corresponding to the positions of the plurality of first positioning through holes.

[0012] In some implementations, a first connecting edge and a second connecting edge are formed at the edge of the front panel bracket. The first connecting edge is used to connect with the housing, and the second connecting edge is used to connect with the base plate.

[0013] In some implementations, the front panel bracket includes a first surface and a second surface disposed opposite to each other, the second surface being away from the front end of the battery module; The fuse module is connected to the first surface, and the connector module is connected to the second surface.

[0014] In some implementations, the fuse module includes a fuse body and a first flexible copper busbar and a second flexible copper busbar respectively connected to both ends of the fuse body. The first flexible copper busbar is used to connect to the battery module, and the second flexible copper busbar is used to connect to the connector module. The first surface is provided with a support for supporting the fuse body.

[0015] In some implementations, the connector module includes a main positive connector, a main negative connector, an MSD, a communication connector one, and a communication connector two; The main positive connector, the main negative connector, the MSD, the communication connector one, and the communication connector two are all disposed on the second surface.

[0016] In some implementations, the side of the BMU cover plate near the front end of the battery module is provided with a number of second positioning posts for connecting the fire detector and a number of third positioning posts for connecting the BMU body. Several second positioning posts are located within the area enclosed by several third positioning posts.

[0017] In some implementations, an explosion-proof valve and a fire nozzle are connected to the end of the BMU cover plate away from the front end of the battery module.

[0018] In some implementations, a third connecting edge is formed at the edge of the BMU cover plate, the third connecting edge being used to connect with the edge of the first opening.

[0019] In some implementations, the front panel bracket is an insulating bracket.

[0020] In summary, this utility model has at least the following advantages: 1. This utility model provides an energy storage battery pack that integrates the fuse module and connector module on the front panel bracket. Compared with the traditional energy storage battery pack structure design, it eliminates the need for separate fuse brackets and connector brackets, reduces process steps, simplifies the structure, and achieves cost reduction and efficiency improvement. At the same time, it frees up more space for the connection of copper busbars and wiring harnesses inside the battery pack, improving electrical safety and product safety. The front panel bracket is an insulated bracket, providing better protection for product performance and safety. A second opening is opened on the shell corresponding to the front end of the battery module, forming a structure without any obstructions, which makes it easy to directly cover the battery module with the shell without having to avoid the assembled front panel bracket, thus improving assembly efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fuse module mentioned in the background section; Figure 2 This is a schematic diagram of the BMU module mentioned in the background section; Figure 3 This is a schematic diagram of the connector module mentioned in the background section; Figure 4 This is an assembly diagram of the energy storage battery pack provided in Embodiment 1 of this utility model; Figure 5 A schematic diagram of the front panel bracket provided in Embodiment 1 of this utility model; Figure 6 A schematic diagram of the housing provided in Embodiment 1 of this utility model; Figure 7 A schematic diagram of the BMU cover plate provided in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the battery module provided in Embodiment 1 of this utility model; Figure 9 A schematic diagram of the fuse module provided in Embodiment 2 of this utility model; Figure 10 A schematic diagram of the connector module provided in Embodiment 2 of this utility model; Figure 11 A schematic diagram of the second and third positioning posts provided in Embodiment 3 of this utility model; Figure 12 and Figure 13 Different views of the BMU cover plate provided in Embodiment 3 of this utility model; Marked in the image: 100. Base plate; 200. Battery module; 210. Support frame; 220. Battery pack; 300, Front panel bracket; 310, First opening; 320, First connecting edge; 330, Second connecting edge; 340, Support; 400. Fuse module; 410. Fuse body; 420. First flexible copper busbar; 430. Second flexible copper busbar; 500. Connector Module; 510. Main Positive Connector; 520. Main Negative Connector; 530. MSD; 540. Communication Connector 1; 550. Communication Connector 2; 600. Shell; 610. First opening; 620. Second opening; 700, BMU cover plate; 710, second positioning post; 720, third positioning post; 730, explosion-proof valve; 740, fire nozzle; 750, third connecting edge; 800. BMU body; 900. Fire detector; 10. Sheet metal bracket; 20. Soft copper busbar; 30. Sheet metal bracket one; 40. Sheet metal bracket two; 50. Sheet metal bracket three. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] Example 1: Please see Figures 4-8 An energy storage battery pack includes a base plate 100, a battery module 200, a front panel bracket 300, a housing 600, and a BMU cover plate 700.

[0027] The battery module 200 is mounted on the base plate 100, which is a welded plate of the liquid-cooled housing. When the battery module 200 is working, it will generate heat. If the heat accumulates, the cell temperature will exceed the safety threshold, affecting the capacity and life. Therefore, the battery module 200 is mounted on the base plate 100 so that the bottom of the battery module 200 is in direct contact with the base plate 100. The heat generated by the cell is first transferred to the base plate 100 through heat conduction. The base plate 100 is in direct contact with the coolant. The heat is transferred to the flowing coolant through convection heat transfer and finally carried out of the housing by the coolant.

[0028] Front panel bracket 300, mounted on the front of battery module 200, reference. Figure 8 The front end of the battery module 200 is one end along the length of the battery pack. The front panel bracket 300 integrates a fuse module 400 and a connector module 500. The fuse module 400 can provide overcurrent protection for the battery module 200 to prevent overcurrent from burning out components, provide short circuit protection to block the chain reaction of extreme short circuits, and provide selective protection to accurately cut off fault circuits so as not to affect the overall system. The connector module 500 is used for current transmission, providing low impedance connection to reduce energy loss, and for signal transmission to synchronously monitor battery status.

[0029] The front panel bracket 300 has a first opening 310, and the BMU cover 700 is embedded in the first opening 310. The BMU cover 700 integrates the BMU body 800 and the fire detector 900. The BMU body 800 is responsible for monitoring the battery status in real time to prevent safety accidents caused by overcharging, over-discharging and overheating of the battery from the source. The fire detector 900 is used to detect fire characteristics as soon as possible and trigger the fire protection system in time.

[0030] The housing 600 covers the outside of the battery module 200. A first opening 610 is provided on the housing 600 at the position corresponding to the bottom plate 100. The edge of the first opening 610 is connected to the bottom plate 100. A second opening 620 is provided on the housing 600 at the position corresponding to the front end of the battery module 200. The front panel bracket 300 is embedded in the second opening 620. The plane where the first opening 610 is located is perpendicular to the plane where the second opening 620 is located.

[0031] Specifically, the first opening 610 occupies the entire end face area of ​​its location, and similarly, the second opening 620 occupies the entire end face area of ​​its location. In other words, there is a lower end face on the housing 600 corresponding to the bottom plate 100, and this lower end face is entirely opened as the first opening 610. There is a side end face on the housing 600 corresponding to the front end of the battery module 200, and this side end face is entirely opened as the second opening 620.

[0032] In traditional energy storage battery pack designs, there is a top cover with high barriers on all four sides. That is, there is no first opening 610 and second opening 620 structure mentioned in this embodiment. Instead, there is a front window corresponding to the front end of the battery module 200. During assembly, the front end of the battery module 200 must be aligned with the front window position first, and then the tail end must be slowly closed for assembly. This assembly method is difficult to align and is prone to collision with the battery module 200, causing product quality risks.

[0033] In this embodiment, an energy storage battery pack is assembled by first mounting the battery module 200 onto the base plate 100, then mounting the front panel bracket 300 onto the front end of the battery module 200, and finally covering the outside of the battery module 200 with the housing 600. Since the housing 600 has a second opening 620 at the position corresponding to the front end of the battery module 200, the housing 600 can be directly assembled from top to bottom relative to the battery module 200 without having to avoid the assembled front panel bracket 300, thus improving assembly efficiency.

[0034] In some embodiments, the battery module 200 includes a support frame 210 and multiple battery packs 220 assembled together. The support frame 210 is connected to a portion of the battery packs 220 corresponding to the position of the front panel bracket 300. The support frame 210 is provided with a plurality of first positioning through holes, and the front panel bracket 300 is provided with a plurality of first positioning posts corresponding to the positions of the plurality of first positioning through holes.

[0035] Multiple battery packs 220 can be assembled according to the required structure, resulting in a cuboid structure. In this embodiment, the front end of the battery module 200 is one end along the length of the formed cuboid structure. After the multiple battery packs 220 are assembled, they can be fixed in position using components such as steel strips. A support frame 210 is connected to the battery packs 220 at the corresponding front panel positions. The support frame 210 serves two purposes: providing support and assembly, and improving the overall strength of the battery module 200.

[0036] A number of first positioning through holes are provided on the support frame 210, and a number of first positioning posts are provided on the front panel bracket 300 at the positions corresponding to the number of first positioning through holes. During assembly, the number of first positioning posts are aligned with the number of first positioning holes one by one for alignment and connection. This can improve the accuracy of alignment and the convenience of connection.

[0037] It should be noted that in this embodiment, there are no specific restrictions on the number of battery packs 220, the number of first positioning through holes, and the number of first positioning posts, which can be adjusted according to actual needs; similarly, there are no specific restrictions on the splicing method between battery packs 220, the distribution position of the first positioning through holes, and the distribution position of the first positioning posts.

[0038] In some embodiments, a first connecting edge 320 and a second connecting edge 330 are formed at the edge of the front panel bracket 300. The first connecting edge 320 is used to connect with the housing 600, and the second connecting edge 330 is used to connect with the base plate 100.

[0039] After aligning the first positioning through holes on the front panel bracket 300 with the first positioning posts on the support frame 210 and connecting them, the bracket is then connected to the housing 600 via the first connecting edge 320 and to the base plate 100 via the second connecting edge 330, thereby improving the assembly stability of the front panel bracket 300.

[0040] In some embodiments, the front panel bracket 300 is an insulating bracket. Using the front panel bracket 300 as an insulating bracket can solve the problem of insulation isolation between high-voltage components in the battery pack and the metal casing 600 or other conductors. It can physically isolate high-voltage components from low-potential or grounded components, block leakage paths, avoid problems such as leakage to ground or short circuits between components at different potentials, and improve the performance and safety of the product.

[0041] This utility model provides an energy storage battery pack that integrates a fuse module 400 and a connector module 500 on a front panel bracket 300. Compared with traditional energy storage battery pack designs, it eliminates the need for separate fuse brackets and connector brackets, reduces process steps, simplifies the structure, and achieves cost reduction and efficiency improvement. At the same time, it frees up more space for the connection of copper busbars and wiring harnesses within the battery pack, improving electrical safety and product safety. The front panel bracket 300 is an insulated bracket, providing better protection for product performance and safety. A second opening 620 is provided on the housing 600 at the position corresponding to the front end of the battery module 200, forming a structure without any obstructions, which facilitates the direct placement of the housing 600 on the battery module 200 without having to avoid the assembled front panel bracket 300, thus improving assembly efficiency.

[0042] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 4-8 Based on the above Figure 9 and Figure 10 .

[0043] In this embodiment, the front panel bracket 300 includes a first surface and a second surface disposed opposite to each other, with the second surface being away from the front end of the battery module 200; the fuse module 400 is connected to the first surface, and the connector module 500 is connected to the second surface.

[0044] By placing the fuse module 400 and the connector module 500 on the first surface and the second surface respectively, it is possible to avoid damage to the connector due to the high temperature or arc of the fuse melting, or to avoid overheating and ignition of the area around the fuse due to poor contact of the connector, and to avoid damage to the connector connection when repairing the fuse; at the same time, it can also ensure the reliability of their respective functions and reduce mutual interference.

[0045] In some embodiments, the fuse module 400 includes a fuse body 410 and a first flexible copper busbar 20420 and a second flexible copper busbar 20430 respectively connected to both ends of the fuse body 410. The first flexible copper busbar 20420 is used to connect to the battery module 200, and the second flexible copper busbar 20430 is used to connect to the connector module 500.

[0046] The first soft copper busbar 20420 and the second soft copper busbar 20430 are used to establish a connection between the fuse body 410 and the battery module 200 and the connector module 500.

[0047] A support 340 for supporting the fuse body 410 is provided on the first surface. The support 340 can improve the assembly stability of the fuse body 410 and facilitate the assembly of the fuse body 410.

[0048] In some embodiments, the connector module 500 includes a main positive connector 510, a main negative connector 520, an MSD 530, a first communication connector 540, and a second communication connector 550; the main positive connector 510, the main negative connector 520, the MSD 530, the first communication connector 540, and the second communication connector 550 are all disposed on the second surface.

[0049] Understandably, positioning holes are provided on the second surface for aligning and mounting the main positive connector 510, the main negative connector 520, the MSD 530, the communication connector 1 540, and the communication connector 2 550, respectively. This is to facilitate the assembly of each component and to improve the stability of the assembly of each component.

[0050] Example 3: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 4-8 Based on the above Figures 11-13 .

[0051] In this embodiment, the BMU cover plate 700 is provided with a plurality of second positioning posts 710 for connecting the fire detector 900 and a plurality of third positioning posts 720 for connecting the BMU body 800 on the side near the front end of the battery module 200; the plurality of second positioning posts 710 are located in the area enclosed by the plurality of third positioning posts 720.

[0052] During assembly, the fire connector is first assembled relative to several second positioning posts 710, and then the BMU body 800 is assembled relative to several third positioning posts 720. The BMU body 800 is then placed over the fire connector. This improves the sensing sensitivity of the fire detector 900 and saves space in the battery pack.

[0053] Furthermore, an explosion-proof valve 730 and a fire nozzle 740 are connected to one end of the BMU cover plate 700 away from the front end of the battery module 200. The explosion-proof valve 730 can automatically open when the pressure inside the battery pack reaches a threshold, quickly releasing high-pressure gas and blocking the leakage of flames and sparks. When the explosion-proof valve 730 cannot completely control thermal runaway, the fire nozzle 740 can be used to spray extinguishing agents in a directional manner to achieve cooling, fire extinguishing and suppression of reignition, and prevent the fire from spreading to the entire system.

[0054] In some embodiments, a third connecting edge 750 is formed at the edge of the BMU cover plate 700. The third connecting edge 750 is used to connect with the edge of the first opening 310. The third connecting edge 750 is connected to the edge of the first opening 310 by screws or other fasteners, thereby improving the connection stability between the BMU cover plate 700 and the front panel bracket 300.

[0055] The above description is merely an example and illustration of the structure of the present invention, and while the description is specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these obvious substitutions all fall within the protection scope of the present invention.

Claims

1. An energy storage battery pack, characterized in that, include: Base plate (100); A battery module (200) is mounted on the base plate (100); A front panel bracket (300) is mounted on the front end of the battery module (200). A fuse module (400) and a connector module (500) are integrated on the front panel bracket (300). A first opening (310) is provided on the front panel bracket (300). A housing (600) is provided on the outside of the battery module (200). A first opening (610) is provided on the housing (600) at a position corresponding to the bottom plate (100). The edge of the first opening (610) is connected to the bottom plate (100). A second opening (620) is provided on the housing (600) at a position corresponding to the front end of the battery module (200). The front panel bracket (300) is embedded in the second opening (620). The plane where the first opening (610) is located is perpendicular to the plane where the second opening (620) is located. BMU cover plate (700) is embedded in the first opening (310), and BMU body (800) and fire detector (900) are integrated on BMU cover plate (700).

2. The energy storage battery pack according to claim 1, characterized in that, The battery module (200) includes a support frame (210) and multiple battery packs (220) assembled together. The support frame (210) is connected to a portion of the battery packs (220) corresponding to the position of the front panel bracket (300). The support frame (210) has a plurality of first positioning through holes, and the front panel bracket (300) has a plurality of first positioning posts at positions corresponding to the plurality of first positioning through holes.

3. The energy storage battery pack according to claim 1 or 2, characterized in that, The front panel bracket (300) has a first connecting edge (320) and a second connecting edge (330) formed at its edge. The first connecting edge (320) is used to connect with the housing (600), and the second connecting edge (330) is used to connect with the base plate (100).

4. The energy storage battery pack according to claim 1, characterized in that, The front panel bracket (300) includes a first surface and a second surface disposed opposite to each other, the second surface being away from the front end of the battery module (200); The fuse module (400) is connected to the first surface, and the connector module (500) is connected to the second surface.

5. The energy storage battery pack according to claim 4, characterized in that, The fuse module (400) includes a fuse body (410) and a first flexible copper busbar (20) (420) and a second flexible copper busbar (20) (430) respectively connected to both ends of the fuse body (410). The first flexible copper busbar (20) (420) is used to connect to the battery module (200), and the second flexible copper busbar (20) (430) is used to connect to the connector module (500). The first surface is provided with a support (340) for supporting the fuse body (410).

6. The energy storage battery pack according to claim 1, characterized in that, The connector module (500) includes a main positive connector (510), a main negative connector (520), an MSD (530), a communication connector one (540), and a communication connector two (550). The main positive connector (510), the main negative connector (520), the MSD (530), the first communication connector (540), and the second communication connector (550) are all disposed on the second surface.

7. The energy storage battery pack according to claim 1, characterized in that, The BMU cover plate (700) is provided with a plurality of second positioning posts (710) for connecting the fire detector (900) and a plurality of third positioning posts (720) for connecting the BMU body (800) on the side near the front end of the battery module (200). A plurality of the second positioning posts (710) are located within the area enclosed by a plurality of the third positioning posts (720).

8. The energy storage battery pack according to claim 7, characterized in that, An explosion-proof valve (730) and a fire nozzle (740) are connected to one end of the BMU cover plate (700) away from the front end of the battery module (200).

9. The energy storage battery pack according to claim 1, characterized in that, A third connecting edge (750) is formed at the edge of the BMU cover plate (700), the third connecting edge (750) being used to connect with the edge of the first opening (310).

10. The energy storage battery pack according to claim 1, characterized in that, The front panel bracket (300) is an insulating bracket.

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