Battery pack unit and battery cluster

Abstract

The utility model discloses a battery pack unit and a battery cluster. The battery pack unit comprises a battery pack, two layers of horizontal supporting platforms and a vertical supporting assembly, one battery pack is mounted on each layer of horizontal supporting platform, and the polarities of the battery packs on the same side of the two layers of horizontal supporting platforms are opposite; the two layers of horizontal supporting platforms are connected in an inserted mode through the vertical supporting assemblies. When the battery pack unit is adopted, an upper battery pack and a lower battery pack can be electrically connected on one side through the electric connection row in advance when the battery packs of each layer of horizontal supporting platform in the same battery pack unit are loaded into the box body of the energy storage container, and then the whole body is mounted in the box body; therefore, the operation space on one side in the box body when the battery packs are connected in series can be saved, and then the energy density of the energy storage equipment can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of batteries, in particular to a battery pack unit and a battery cluster. Background Art

[0002] At present, with the continuous growth of global energy demand and the improvement of environmental protection awareness, energy storage technology has gradually become one of the important means to solve energy problems.

[0003] As a new type of energy storage equipment, energy storage containers have the advantages of portability, flexibility, and high efficiency, and are widely used in power systems, transportation, aerospace, etc. The existing energy storage containers on the market include a box body and multiple battery clusters located in the box body. Each battery cluster includes multiple layers of battery packs, and each layer of battery packs needs to be electrically connected in series.

[0004] In the related art, after each layer of battery packs is installed in the box in turn, operating space needs to be reserved on both sides of each battery cluster so that the operator can complete the series connection between each layer of battery packs. However, the disadvantage of this design is that the horizontal space in the entire box is large, which affects the energy density of the energy storage device. Utility Model Content

[0005] In order to solve the problem in the related art that when battery packs are connected in series in a box of an energy storage device, it is necessary to reserve operating space on both sides of each battery cluster, which affects the energy density of the energy storage device, the first aspect of the utility model provides a battery pack unit.

[0006] The battery pack unit includes a battery pack, two layers of horizontal support platforms, and a vertical support assembly for plugging; a battery pack is installed on each layer of horizontal support platform, and the battery packs of the two layers of horizontal support platforms are located on the same side with opposite polarities; the two layers of horizontal support platforms are plugged in through the vertical support assembly. When using this battery pack unit, the upper and lower battery packs of each layer of horizontal support platform in the same battery pack unit can be arranged on one side through electrical connection in advance when they are loaded into the energy storage container box, and then the whole is installed in the box, which can save one side of the operating space in the box for battery pack series connection, and then the energy density of the energy storage device can be improved.

[0007] Furthermore, the vertical support assembly plug-in includes a plurality of first butt joints fixed vertically to the bottom surface of the upper horizontal support platform, and a plurality of second butt joints fixed vertically to the top surface of the lower horizontal support platform; the plurality of first butt joints and the plurality of second butt joints correspond to each other and are plugged in. The plug-in of the first butt joints and the second butt joints can also increase the overall connection strength and stability of the battery pack support device.

[0008] Furthermore, the above-mentioned horizontal support platform includes a rectangular frame and a plurality of battery bracket assemblies; the plurality of battery bracket assemblies are arranged at intervals and fixed on the rectangular frame.

[0009] Furthermore, the above-mentioned battery bracket assembly includes a supporting member and two L-shaped brackets; the supporting member is used to support the battery; the L-shaped bracket includes a vertical bracket and a horizontal bracket, the vertical brackets of the two L-shaped brackets are respectively fixed at both ends of the supporting member, and the horizontal brackets of the two L-shaped brackets are respectively used to fix the two side beams opposite to the rectangular frame.

[0010] Furthermore, the supporting member includes two supporting ribs, and the two supporting ribs are respectively used to be inserted into two channels at the bottom of the battery to support the battery.

[0011] Furthermore, the support member and the L-shaped bracket are an integrated part; the support member is a support plate adapted to the shape of the bottom of the battery.

[0012] Furthermore, the rectangular frame includes a U-shaped frame and a first beam fixed to an open end of the U-shaped frame in a detachable connection manner.

[0013] Furthermore, the U-shaped frame includes a second beam and a third beam respectively fixed at both ends of the second beam; the third beam is provided with a roller;

[0014] Wherein, the first beam and the second beam are I-shaped steels, and the horizontal bracket of the battery bracket assembly is fixed on the upper wing plate of the I-shaped steel.

[0015] A second aspect of the present invention provides a battery cluster, comprising N battery pack units as described above, where N ≥ 2;

[0016] N battery pack units are arranged from top to bottom;

[0017] Two battery packs of the same battery pack unit are electrically connected on the first side through the electrical connection row, and two battery packs of adjacent battery pack units are electrically connected on the second side through the electrical connection row, thereby realizing the series connection of each battery pack in the battery cluster.

[0018] The beneficial effects of the utility model are:

[0019] The battery pack unit of the utility model has two layers of horizontal support platforms fixed into a whole by plugging. The battery packs of each layer of horizontal support platforms in the same battery pack unit can be electrically connected in advance by means of an electrical connection row at the same side and with opposite polarities of the upper and lower battery packs when loaded into the box of the energy storage container, thereby saving operating space on one side of the box for connecting the battery packs in series, thereby improving the energy density of the energy storage device.

[0020] In addition, the upper and lower horizontal support platforms of the battery pack unit are auxiliary supported by the vertical support assembly, which can also enhance the connection strength and reliability when the battery pack unit is used to form a battery cluster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a battery pack unit;

[0022] Figure 2 This is a schematic diagram of a partial explosion of a large-capacity battery;

[0023] Figure 3 for Figure 2 A cross-sectional view of

[0024] Figure 4 A schematic diagram of the structure of the battery pack is omitted for the battery pack unit;

[0025] Figure 5 It is a structural schematic diagram of the upper horizontal support platform;

[0026] Figure 6 It is a structural schematic diagram of the lower horizontal support platform;

[0027] Figure 7 is a structural schematic diagram of a first battery bracket assembly;

[0028] Figure 8 for Figure 7 Explosion diagram of

[0029] Fig. 9 is a schematic structural diagram of an L-shaped bracket in a first battery bracket assembly;

[0030] Fig.10 is a structural schematic diagram of a second battery bracket assembly;

[0031] Fig.11 is a schematic structural diagram of a third battery bracket assembly;

[0032] Fig.12 It is a structural schematic diagram of a rectangular frame;

[0033] Fig.13 is a schematic diagram of the structure of the first beam and the second beam;

[0034] Fig.14 A schematic diagram of the assembly process of a battery pack and a battery pack support device;

[0035] Fig.15 A schematic diagram of the local structure of a large-capacity battery installed on a battery pack support device;

[0036] Fig.16 Schematic diagram of the local structure of the energy storage device.

[0037] The reference numerals are as follows:

[0038] 100, horizontal support platform; 200, vertical support assembly; 201, first butt joint pipe; 202, second butt joint pipe;

[0039] 1. Battery bracket assembly; 11. Support member; 111. Support rib; 112. Support plate; 12. L-shaped bracket; 121. Vertical bracket; 122. Horizontal bracket; 123. L-shaped support rod; 124. Connecting rod; 125. Hollow portion; 126. Positioning hole;

[0040] 2. Battery pack; 20. Large-capacity battery; 21. Shell; 211. Shell bottom plate; 2111. Channel; 212. Shell top plate; 22. Single cell; 24. Single cell polarity terminal; 25. Liquid cooling pipe; 26. Electrical connector; 27. Insulating protective cover; 28. Electrolyte shared chamber; 29. ​​Support block; 30. Gas shared chamber;

[0041] 3. Rectangular frame; 31. U-shaped frame; 32. First beam; 33. Connecting column; 34. Second beam; 341. Upper wing plate; 35. Third beam; A. Explosion venting pipe assembly; B. Explosion venting manifold;

[0042] 300. Battery pack unit; 400. Electrical connection row. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary persons in the field without creative work should fall within the scope of protection of the utility model.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top, bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first, second, third, fourth, etc." are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] like Figure 1 As shown, the utility model provides a battery pack unit 300, including a battery pack 2, two layers of horizontal support platforms 100 and a vertical support assembly 200 for insertion; the two layers of horizontal support platforms 100 are plugged in through the vertical support assembly 200 to form a whole; the battery pack includes a plurality of large-capacity batteries or battery modules placed horizontally; the large-capacity battery described herein is a battery with a shared electrolyte system composed of a plurality of single cells connected in parallel, and the structure of the large-capacity battery is detailed in Chinese patents, the large-capacity battery structure disclosed in publication number CN220324640U, or the large-capacity battery structure disclosed in publication number CN117525773A; the battery module is composed of a plurality of single cells connected in parallel (the battery module is of conventional design, and the electrolyte of each single cell in the battery module is not shared).

[0047] In this embodiment, the battery pack has a plurality of large-capacity batteries 20. The structure of the large-capacity batteries 20 is as follows: Figure 2 and Figure 3 , including a housing 21 and a plurality of single cells 22 arranged in parallel in the housing 21 .

[0048] The single battery 22 in this embodiment is a square shell battery, and the number is 13. In other embodiments, the number can be adjusted according to actual needs. The inner cavity of each single battery 22 includes an electrolyte area and a gas area.

[0049] On the housing bottom plate 211 , an electrolyte sharing chamber 28 is provided along the direction in which the plurality of single cells are arranged. The inner cavity of the electrolyte sharing chamber 28 is in communication with the inner electrolyte area of ​​each single cell 22 .

[0050] A gas sharing chamber 30 is provided on the housing top plate 212 along the direction in which the plurality of single cells are arranged. The inner cavity of the gas sharing chamber 30 is in communication with the inner cavity gas area of ​​each single cell 22 .

[0051] In this embodiment, the housing top plate 212 is provided with avoidance holes for extending the polarity terminals 24 of each single battery; each single battery polarity terminal 24 extends out of the corresponding avoidance hole and the housing area around the avoidance hole is fixedly sealed with the housing of the single battery 22 .

[0052] In this embodiment, a through groove is provided at the portion where the polarity terminal 24 of the single battery extends out of the avoidance hole, serving as a clamping portion for the liquid cooling tube 25; the liquid cooling tube 25 is fixed in the through groove, and when the temperature of the large-capacity battery is higher than a set threshold, a heat transfer medium with a lower temperature is introduced into the liquid cooling tube 25 to cool the battery pack; when the temperature of the large-capacity battery is lower than the set threshold, a heat transfer medium with a higher temperature is introduced into the liquid cooling tube 25 to heat the large-capacity battery; by controlling the temperature of the heat transfer medium, it can be ensured that the large-capacity battery always operates at a normal operating temperature.

[0053] In order to prevent condensation generated by the liquid cooling tube 25 from causing safety problems, the present embodiment can also lay an insulating sealant layer on the top plate 212 of the outer shell, and a partial area of ​​each single cell polarity terminal 24 is covered by the insulating sealant layer, and the electrical connection part of each single cell polarity terminal 24 extends out of the insulating sealant layer and is connected to the electrical connector 26; the main part of the liquid cooling tube 25 is covered by the insulating sealant layer, and the liquid inlet and outlet ends of the liquid cooling tube 25 extend out of the insulating sealant layer for connection with the liquid cooling equipment.

[0054] In addition, since the polarity terminals 24 of the single battery are directly exposed to the external environment, there is a great safety hazard during use due to the charged polarity terminals 24 of the single battery. Based on this, the present embodiment sets an insulating protective cover 27 on the top of the large-capacity battery to provide insulation protection for the polarity terminals 24 of the single battery, avoiding the potential safety hazard of the polarity terminals 24 of the single battery being exposed during the operation of the battery pack, and also avoiding the problem of some foreign objects in the external environment falling into the position of the polarity terminals 24 of the single battery causing a short circuit of the large-capacity battery, thereby improving the safety of the large-capacity battery.

[0055] It should be noted that if the insulating protective cover 27 completely wraps the single cell polarity terminal 24, it will make the electrical connection of such large-capacity batteries more difficult. Therefore, this embodiment opens a slit on the side wall of the insulating protective cover 27, through which the electrical connector 26 can be connected to the single cell polarity terminal 24, thereby achieving electrical connection.

[0056] It should also be noted that a channel for the liquid inlet and outlet ends of the liquid cooling tube 25 to extend out needs to be provided on the side wall of the insulating protective cover 27 .

[0057] In order to prevent the spread of smoke caused by thermal runaway of single cells 22 in large-capacity batteries and cause safety problems, the utility model uses an explosion-proof manifold to converge the explosion-proof pipe assemblies A of all large-capacity batteries on the same horizontal support platform. When thermal runaway occurs in a single cell 22 in any large-capacity battery in the battery pack, its thermal runaway smoke can be discharged through the explosion-proof manifold, thereby reducing the risk of thermal runaway spread and explosion of large-capacity batteries or even battery packs and energy storage equipment.

[0058] In this embodiment, Figure 4 , Figure 5 as well as Figure 6 As shown, the vertical support assembly 200 includes a plurality of first docking tubes 201 vertically fixed to the bottom surface of the upper horizontal support platform 100, and a plurality of second docking tubes 202 vertically fixed to the top surface of the lower horizontal support platform 100; the plurality of first docking tubes 201 and the plurality of second docking tubes 202 correspond one to one and are plugged into each other; the inner diameter of the first docking tube 201 may be greater than the outer diameter of the second docking tube 202, or the outer diameter of the first docking tube 201 may be smaller than the inner diameter of the second docking tube 202, and the gap between the first docking tube 201 and the second docking tube 202 after being plugged in can also correct the installation error when the battery packs of the upper and lower support platforms are connected in series through electrical connectors.

[0059] In this embodiment, the horizontal support platform 100 includes a rectangular frame 3 and a plurality of battery bracket assemblies 1 ; the plurality of battery bracket assemblies 1 are arranged at intervals and fixed on the rectangular frame 3 .

[0060] The battery bracket assembly 1 is mainly composed of a support member 11 and two L-shaped brackets 12, and can be specifically in the following three forms:

[0061] First form:

[0062] like Figure 7 As shown, it is a structural schematic diagram of the battery bracket assembly 1. It can be seen from the figure that this embodiment adopts two mutually parallel support ribs 111 as the support member 11 (the number of support ribs 111 can be adjusted according to actual needs); an L-shaped plate is used as the L-shaped bracket 12.

[0063] The vertical plates of the two L-shaped plates serve as vertical brackets 121, and are respectively connected to the ends of the same side of the two support ribs 111. The horizontal plates of the two L-shaped plates serve as horizontal brackets 122, and are respectively used to fix the frame body opposite to the rectangular frame 3. The vertical plate and the horizontal plate can be an integral part or a separate part.

[0064] The support rib 111 can be a solid structure or a hollow structure, and its cross-section is preferably compatible with the channel 2111 of the battery housing bottom plate 211, such as a rectangular cross-section, a trapezoidal cross-section, or other polygonal cross-sections, which are not listed here one by one.

[0065] like Figure 8 As shown, this embodiment uses a relatively simple rectangular cross-section support rib 111, so the corresponding cross-section of the battery housing bottom plate 211 channel 2111 is also preferably rectangular. Using a rectangular cross-section support rib 111 to support the battery pack has better support stability. In addition, Figure 8 It can be seen that the support rib 111 of this embodiment is a hollow structure to facilitate connection with the L-shaped plate. The specific connection method is described in detail below.

[0066] In order to ensure the supporting strength of the support ribs 111, the present embodiment selects metal material as the material of the support ribs 111, and a thermoplastic tube can be sleeved on the support ribs 111 to insulate the support ribs 111 from the large-capacity battery.

[0067] In some other embodiments, insulating materials may be directly used to prepare the support ribs 111 , but compared with this embodiment, the support strength thereof is difficult to ensure.

[0068] During the assembly process of this embodiment, the support rib 111 needs to be inserted into the channel 2111 of the housing bottom plate 211 first, and then the L-shaped plates are fixed to both ends of the support rib 111 extending out of the channel 2111. Therefore, in this embodiment, the support rib 111 and the L-shaped plate are separate parts.

[0069] Combination Fig. 9 It can be seen that in this embodiment, a connecting rod 124 extending in the horizontal direction is provided on the vertical plate of the L-shaped plate, for connecting with the supporting rib 111. Corresponding positioning holes 126 are provided on the supporting rib 111 and the connecting rod 124.

[0070] During specific assembly, the support rib 111 is inserted into the channel 2111 of the battery housing bottom plate 211, and then the connecting rod 124 is inserted into the support rib 111, and the two are fixed by screws or pins penetrating the positioning holes 126.

[0071] In some other embodiments, the connecting rod 124 may be connected to the supporting rib 111 by welding. However, in order to increase the energy density of the battery cluster, a smaller distance is provided between the vertical plate and the battery, which results in a smaller operating space and greater welding difficulty.

[0072] In some other embodiments, the support ribs 111 and the L-shaped plate may be an integrated part, and the battery pack may be directly placed on the support ribs 111 for support. Accordingly, in order to improve the support stability, the number of support ribs 111 may be increased.

[0073] from Fig. 9 It can also be seen that in this embodiment, a hollow portion 125 is provided on the vertical plate, and the parts on both sides of the hollow portion 125 are respectively connected to the two support ribs 111. By providing the hollow portion 125, on the one hand, the weight of the L-shaped plate is reduced, thereby reducing its impact on the normal use of the rectangular frame 3, and on the other hand, the hollow portion 125 can be used for the extension of certain functional structures on the battery. For example, Figure 2 In the middle, the explosion relief tube assembly A on the battery can be extended.

[0074] In this embodiment, a long hole is opened on the horizontal plate (horizontal bracket 122) of the L-shaped plate, and screws are inserted into the long hole to fix it with the rectangular frame 3. The provision of the long hole can make up for the size error of the battery bracket assembly and ensure the reliability of the connection.

[0075] Second form:

[0076] Different from the first form, Fig.10 As shown, the L-shaped bracket 12 of this embodiment is two L-shaped support rods 123; that is, two L-shaped support rods 123 constitute an L-shaped bracket 12;

[0077] The vertical brackets 121 of two L-shaped support rods 123 are respectively fixed to the two ends of the same support rib 111 in a detachable manner, and the vertical brackets 121 of the other two L-shaped support rods 123 are respectively fixed to the two ends of another support rib 111 in a detachable manner.

[0078] The third form:

[0079] The support member 11 and the L-shaped bracket 12 are an integral part. Fig.11 As shown, the support member 11 of this embodiment is a support plate 112 that matches the shape of the bottom of the battery to support the battery. In order to reduce the weight of the support plate 112, a weight-reducing hole can be opened on the support plate 112. However, it should be noted that the opening of the weight-reducing hole is based on the premise that it does not affect the support strength.

[0080] In this embodiment, there are two L-shaped brackets 12, both of which are L-shaped plates; the vertical bracket 121 of one L-shaped plate is connected to one end of the support plate 112, and the vertical bracket 121 of the other L-shaped plate is connected to the other end of the support plate 112. That is, the structure of the L-shaped bracket 12 in this embodiment is similar to that of the first embodiment, and in some other embodiments, an L-shaped bracket 12 similar to the second embodiment can also be selected.

[0081] In order to improve the stability of the battery pack on the battery bracket assembly 1, this embodiment also opens a threaded hole on the vertical bracket 121 of the L-shaped plate, and fixes the vertical bracket 121 of the L-shaped plate to the battery by screw fastening.

[0082] The battery is placed on the support plate 112. In order to insulate the battery bracket assembly 1 from the battery, an insulating gasket may be provided between the support plate 112 and the battery. Then, the vertical bracket 121 and the battery housing may be fixed with screws.

[0083] The structure of the rectangular frame 3 is as follows Fig.12As shown, in order to facilitate fixing the battery on the rectangular frame 3, the present embodiment designs the rectangular frame 3 as a split structure, including a U-shaped frame 31 and a first beam 32 fixed to the open end of the U-shaped frame 31. The open end of the U-shaped frame 31 facilitates the assembly of the battery and the rectangular frame.

[0084] In some other embodiments, an integrated rectangular frame may be used, but compared with this embodiment, the assembly of the battery and the rectangular frame is more difficult.

[0085] For the convenience of description, the U-shaped frame 31 is divided into three parts in this embodiment, which are defined as the second beam 34 and two third beams 35 respectively fixed at both ends of the second beam 34; in order to improve the structural strength of the entire rectangular frame 3, the first beam 32 and the second beam 34 opposite to the first beam 32 in this embodiment are made of I-shaped steel (see Fig.13 and Fig.14 ), the upper wing plate 341 of the I-shaped steel is used as a fixing surface with the horizontal bracket 122. The third beam 35 is made of square steel. In addition, in order to facilitate the assembly of the battery pack into the box, the third beam 35 is also provided with a roller in this embodiment.

[0086] In some other embodiments, the first beam 32 and the second beam 34 may also be made of square steel. The supporting strength of square steel is relatively weak. In order to improve the supporting strength of the entire rectangular frame 3, it is necessary to add a supporting structure in the middle of the frame. However, after the supporting structure is added, the distance between the battery packs on both sides of the supporting structure will be larger, which will lead to a lower energy density of the entire battery cluster assembly.

[0087] In this embodiment, the first beam 32 and the second beam 34 are made of I-shaped steel, and the upper wing plate 341 is used as the fixing surface with the horizontal bracket 122. The upper wing plate 341 is the maximum load-bearing surface of the I-shaped steel, so that the entire rectangular frame 3 has good supporting strength without the need for additional supporting structural parts, thereby making the gaps between all battery packs equal (with small gaps), thereby improving the energy density of the entire energy storage device.

[0088] like Fig.14 As shown, the U-shaped frame 31 is moved in the direction indicated by the arrow a in the figure, the explosion relief manifold B is located between the upper and lower flanges of the I-shaped steel, and the horizontal bracket 122 of the battery bracket assembly 1 close to the second beam 34 is located on the upper wing plate 341 of the second beam 34, indicating that it has been moved into place;

[0089] Then, the first beam 32 is fixed to the open end of the U-shaped frame 31 by using the connecting column 33. Specifically, one end of the two connecting columns 33 can be fixed to the two ends of the second beam 34 respectively. Then, the second beam 34 fixed with the connecting column 33 is moved in the direction indicated by the arrow b until the connecting column 33 is inserted into the third beam 35. The horizontal bracket 122 of the battery bracket assembly 1 close to the first beam 32 is located on the upper wing plate 341 of the first beam 32, indicating that it has been moved into place; the connecting column 33 and the third beam 35 are fixed by screws;

[0090] Finally, the horizontal brackets 122 of the battery bracket assembly 1 on both sides of each battery pack are fixed to the upper wing plate 341 of the first beam 32 and the upper wing plate 341 of the second beam 34 respectively (see Fig.15 shown).

[0091] In some other embodiments, a large-capacity battery can be pushed in through the open end of the U-shaped frame 31 and fixed to the rectangular frame 3 through a battery bracket assembly. Then, the first beam 32 is fixed to the open end of the U-shaped frame 31, and the battery bracket on the other side is fixed to the first beam 32 to complete the assembly.

[0092] Based on the above introduction to the battery pack unit, the battery cluster composed of the battery pack unit is described as follows:

[0093] See also Fig.16 The energy storage device of this embodiment includes N battery pack units 300 (four in this embodiment, and the number can be adjusted according to demand); the four battery pack units 300 are arranged from top to bottom; the two battery packs 2 of the same battery pack unit 300 are electrically connected on the first side through the electrical connection row 400 (the first, second, third, and fourth battery pack units are electrically connected on the first side). Fig.16 The right side of the battery pack is electrically connected by an aluminum row as shown), and the two battery packs of the adjacent battery pack unit 300 are electrically connected on the second side by an electrical connection row 400 (the 1st and 2nd battery packs, the 2nd and 3rd battery packs, and the 3rd and 4th battery packs are electrically connected on the second side). Fig.16 The left side shown is electrically connected via an aluminum busbar), thereby achieving series connection of the battery packs in the battery cluster.

Claims

1. A battery pack unit, characterized in that: It includes a battery pack, two layers of horizontal support platforms and a vertical support assembly; a battery pack is installed on each layer of horizontal support platform, and the battery packs of the two layers of horizontal support platforms are located on the same side with opposite polarities; the two layers of horizontal support platforms are plugged in through the vertical support assembly.

2. The battery pack unit according to claim 1, characterized in that: The vertical support assembly includes a plurality of first butt joints fixed vertically to the bottom surface of the upper horizontal support platform, and a plurality of second butt joints fixed vertically to the top surface of the lower horizontal support platform; the plurality of first butt joints and the plurality of second butt joints correspond one to one and are plugged into each other.

3. The battery pack unit according to claim 1, characterized in that: The horizontal support platform comprises a rectangular frame and a plurality of battery bracket assemblies; the plurality of battery bracket assemblies are arranged at intervals and fixed on the rectangular frame.

4. The battery pack unit according to claim 3, characterized in that: The battery bracket assembly includes a supporting member and two L-shaped brackets; the supporting member is used to support the battery; the L-shaped bracket includes a vertical bracket and a horizontal bracket, the vertical brackets of the two L-shaped brackets are respectively fixed at both ends of the supporting member, and the horizontal brackets of the two L-shaped brackets are respectively used to fix the two side beams opposite to the rectangular frame.

5. The battery pack unit according to claim 4, characterized in that: The supporting member includes two supporting ribs, which are respectively used to be inserted into two channels at the bottom of the battery to support the battery.

6. The battery pack unit according to claim 4, characterized in that: The support member and the L-shaped bracket are an integrated part; the support member is a support plate adapted to the shape of the bottom of the battery.

7. The battery pack unit according to claim 3, characterized in that: The rectangular frame comprises a U-shaped frame and a first beam fixed to an open end of the U-shaped frame in a detachable connection manner.

8. The battery pack unit according to claim 7, characterized in that: The U-shaped frame includes a second beam and a third beam respectively fixed at both ends of the second beam; the third beam is provided with a roller; The first beam and the second beam are I-shaped steels, and the horizontal bracket of the battery bracket assembly is fixed on the upper wing plate of the I-shaped steel.

9. A battery cluster, characterized in that: Comprising N battery pack units according to any one of claims 1 to 8, N ≥ 2; N battery pack units are arranged from top to bottom; Two battery packs of the same battery pack unit are electrically connected on the first side through the electrical connection row, and two battery packs of adjacent battery pack units are electrically connected on the second side through the electrical connection row, thereby realizing the series connection of each battery pack in the battery cluster.

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