Multilayer modular battery

Abstract

The utility model relates to the technical field of batteries, in particular to a multi-layer modular battery which comprises a base, a first supporting component and a plurality of battery packs, wherein the plurality of battery packs are stacked on the base along a preset direction to form a battery module; the first supporting component is fixed on the base, and the plurality of battery packs are connected with the first supporting component. According to the multi-layer modular battery provided by the invention, a plurality of battery packs can be stacked into groups according to the demand of a user for capacitance, the operation is simple and convenient, the grouping is more flexible and multi-sided, each battery pack is light in weight and more convenient to carry, in addition, the plurality of battery packs are supported and fixed on the base by the first supporting component after being stacked, and the multi-layer modular battery is convenient to carry. And a plurality of battery packs are more stable and firmer.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a multi-layer modular battery. Background Art

[0002] At present, with the development of society, customers have put forward different requirements on the capacity of batteries, which requires battery manufacturers to redesign the size of battery cells into groups according to customer needs, which is time-consuming and labor-intensive, and the whole package is heavy and inconvenient to carry. Utility Model Content

[0003] The purpose of the present application is to provide a multi-layer modular battery, which to some extent solves the technical problems existing in the prior art that battery manufacturers need to redesign the size of battery cells into groups according to customers' different demands for power capacity, which is time-consuming and labor-intensive, and the whole package is heavy and inconvenient to carry.

[0004] The present application provides a multi-layer modular battery, comprising: a base, a first support member and a plurality of battery packs; wherein the plurality of battery packs are stacked on the base along a preset direction to form a battery module; the first support member is fixed on the base, and the plurality of battery packs are connected to the first support member.

[0005] In the above technical solution, further, the preset direction includes a first preset direction and a second preset direction, and the first preset direction is the same as the length direction of the battery cells in the battery pack, and the second preset direction is the same as the height direction of the battery cells in the battery pack.

[0006] In any of the above technical solutions, further, the multi-layer modular battery also includes at least two second supporting members, and at least two of the second supporting members are fixed to the base and respectively abut against two sides of the battery module along the first preset direction.

[0007] In any of the above technical solutions, further, a plurality of the battery packs are stacked along the second preset direction to form a bottom battery pack and an upper multi-layer battery pack, and the upper multi-layer battery pack includes multiple layers of battery packs, and each layer of the battery pack is connected to the second supporting member.

[0008] In any of the above technical solutions, further, the multi-layer modular battery also includes a connecting member, each layer of the battery pack in the upper multi-layer battery pack is equipped with one of the connecting members, and any of the connecting members extends along the thickness direction of the battery cells in the battery pack, and the two ends of the connecting member are respectively connected to the two end plates of the battery pack, and the connecting member is also connected to the second supporting member.

[0009] In any of the above technical solutions, further, each layer of battery pack in the upper multi-layer battery pack is detachably connected to the provided connecting member via a fastening member.

[0010] In any of the above technical solutions, further, the connecting member and the second supporting member are detachably connected via a fastening member.

[0011] In any of the above technical solutions, further, a first insulating layer is provided on a surface of the connecting member in contact with the battery pack.

[0012] In any of the above technical solutions, further, the connecting member includes a bottom support plate, a side limit plate, an end connection plate and a positioning plate connected to each other; wherein, along the width direction of the battery cell in the battery pack, the end connection plate is arranged at the end of the bottom support plate, and the end connection plate is connected to the end plate of the battery pack; along the first preset direction, the side limit plate is arranged on the side of the bottom support plate;

[0013] The side limiting plate is formed with a bent connecting plate bent toward the outside of the battery pack, and the bent connecting plate abuts against and is connected to the second supporting member; the positioning plate is connected to the bottom support plate and / or the side limiting plate, and the positioning plate is inserted into the positioning gap of the battery pack.

[0014] In any of the above technical solutions, further, the second supporting member is detachably connected to the base.

[0015] In any of the above technical solutions, further, a liquid cooling plate is provided between the bottom battery pack and the upper multi-layer battery pack and between each two adjacent battery packs in the upper multi-layer battery pack, and any of the liquid cooling plates is connected to the second supporting member.

[0016] In any of the above technical solutions, further, any of the battery packs is detachably connected to the first supporting member.

[0017] In any of the above technical solutions, further, the first supporting member is detachably connected to the base.

[0018] In any of the above technical solutions, further, along the width direction of the battery cells in the battery pack, the first supporting member is provided at at least one end of the battery module.

[0019] In any of the above technical solutions, further, the battery pack includes a lower base plate, an upper cover plate, a battery module, an end plate and a pole support plate; wherein the battery module includes a cell assembly, and the cell assembly includes a plurality of cells arranged in sequence; the battery module is arranged on the lower base plate, the upper cover plate is arranged on the top of the battery module, and the upper cover plate is formed with a plug-in portion, the first support member is formed with a plug-in interface, the plug-in portion is plugged into the plug-in interface, and the upper cover plates of at least some of the battery packs in the plurality of battery packs are connected to the first support member;

[0020] There are two end plates, which are respectively arranged at opposite ends of the battery module along the width direction of the battery cell, and a second insulating layer is arranged between the battery cell; the end plates are connected to the upper cover plate and the first supporting member; along the length direction of the battery cell, the pole support plates are arranged on opposite sides of the battery module; the pole support plates are connected to the upper cover plate and the lower base plate.

[0021] In any of the above technical solutions, further, the battery module also includes an aluminum plate, an injection molded part and a third insulating layer; wherein the aluminum plates are respectively bonded to the top, bottom and both sides along the width direction of the battery cell assembly, and the third insulating layer is arranged between the aluminum plate and the battery cell; along the length direction of the battery cell, the injection molded parts are arranged at both ends of the stacking structure formed by multiple battery cells, and the injection molded parts are clamped with a bus bar, a total positive lead bar and a total negative lead bar.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The multi-layer modular battery provided in the present application can stack multiple battery packs into groups according to the user's demand for power capacity. The operation is simple and convenient, the grouping is more flexible and multilateral, and a single battery pack is light in weight and easier to carry. In addition, after the multiple battery packs are stacked, they are supported and fixed on the base by the first supporting member, making the multiple battery packs more stable and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of a multi-layer modular battery provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A schematic diagram of a local enlarged structure;

[0027] Figure 3 An assembly diagram of a base, a first supporting member, and a second supporting member provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the structure of the connecting member provided in the embodiment of the present application;

[0030] Figure 6 Another schematic diagram of the structure of the connecting member provided in the embodiment of the present application;

[0031] Figure 7 An assembly diagram of a battery pack and a connecting member provided in an embodiment of the present application;

[0032] Figure 8 A schematic diagram of the structure of a liquid cooling plate provided in an embodiment of the present application;

[0033] Fig. 9 An assembly diagram of a battery pack, a connecting member, and a liquid cooling plate provided in an embodiment of the present application;

[0034] Fig.10 A schematic diagram of a partial structure of a multi-layer modular battery provided in an embodiment of the present application;

[0035] Fig.11 for Fig.10 A schematic diagram of the local enlarged structure at A;

[0036] Fig.12 An exploded view of a battery pack provided in an embodiment of the present application;

[0037] Fig.13 A schematic diagram of the structure of the lower base plate provided in an embodiment of the present application;

[0038] Fig.14 A schematic diagram of the structure of a pole support plate provided in an embodiment of the present application;

[0039] Fig.15 An exploded view of a battery module provided in an embodiment of the present application;

[0040] Fig.16 A schematic structural diagram of a second supporting member provided in an embodiment of the present application.

[0041] Reference numerals:

[0042] 1-base, 2-first supporting member, 21-flange, 3-battery pack, 31-lower bottom plate, 311-first waist-shaped hole, 312-avoidance gap, 32-upper cover, 321-plug-in portion, 33-battery module, 331-aluminum plate, 332-injection molded part, 333-third insulating layer, 334-battery cell, 335-bus bar, 336-total positive lead row, 337-total negative lead row, 34-end plate, 35-pole support plate, 3 51-first stud, 352-second stud, 36-second insulating layer, 4-bottom battery pack, 5-upper battery pack, 6-second supporting member, 61-U-shaped frame, 62-back plate, 63-bottom connecting plate, 7-connecting member, 71-bottom supporting plate, 72-side limiting plate, 73-end connecting plate, 74-positioning plate, 75-bent connecting plate, 8-liquid cooling plate, 81-side protrusion, a-first preset direction, b-second preset direction. DETAILED DESCRIPTION

[0043] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0044] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0045] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] Refer to the following Figures 1 to 16 A multi-layer modular battery according to some embodiments of the present application is described.

[0049] See also Figures 1 to 3 As shown, an embodiment of the present application provides a multi-layer modular battery, comprising: a base 1, a first support member 2 and a plurality of battery packs 3; wherein the plurality of battery packs 3 are stacked on the base 1 along a preset direction to form a battery module; the first support member 2 is fixed on the base 1, and the plurality of battery packs 3 are all connected to the first support member 2.

[0050] Based on the structure described above, it can be known that the multi-layer modular battery provided in the present application can stack multiple battery packs 3 into groups according to the user's demand for power capacity. The operation is simple and convenient, the grouping is more flexible and multilateral, and a single battery pack 3 is light in mass and weight, which is easier to carry. In addition, after being stacked, multiple battery packs 3 are supported and fixed on the base 1 by the first supporting member 2, making the multiple battery packs 3 more stable and firm.

[0051] In this embodiment, preferably, Figure 1 As shown, the preset direction includes a first preset direction a and a second preset direction b, and the first preset direction a is the same as the length direction of the battery cell 334 in the battery pack 3, and the second preset direction b is the same as the height direction of the battery cell 334 in the battery pack 3.

[0052] Furthermore, preferably, the number of battery packs 3 is two, and they are stacked into a bottom battery pack 4 and an upper multi-layer battery pack along the aforementioned second preset direction b, that is, the height direction of the battery cells 334. At this time, the upper multi-layer battery pack only includes one layer of battery pack 3, and can be named as an upper battery pack 5. This will be used as an example to illustrate this later. This stacking structure makes full use of the space in the height direction and saves space in the horizontal direction. It is particularly applicable to areas with large height space and limited horizontal space.

[0053] Of course, the arrangement of the battery pack 3 is not limited to the above. For example, the two battery packs 3 mentioned above can also be arranged sequentially only along the first preset direction a, which saves space in the height direction and occupies space in the horizontal direction. It is particularly applicable to areas with large horizontal space and limited space in the height direction.

[0054] In addition, the number of battery packs 3 is not limited to the above two. The number of battery packs 3 can be more than two, such as three, four, five, six, etc., and multiple battery packs 3 can be stacked in a stack only along the second preset direction b, or only arranged in sequence along the first preset direction a, that is, stacked along a horizontal plane, or multiple battery packs 3 can be stacked along the first preset direction a and the second preset direction b at the same time, depending on actual needs.

[0055] In this embodiment, preferably, Figure 3 As shown, the multi-layer modular battery also includes six second support members 6, and the six second support members 6 are all fixed to the base 1, and along the first preset direction a, three of the six second support members 6 are against one side of the battery module, and the other three second support members 6 are against the opposite side of the battery module.

[0056] According to the structure described above, it can be seen that the two sides of the battery module are limited by using a plurality of second support members 6 respectively, so that the battery module is more stable and will not shift.

[0057] It should be noted that the number of second support members 6 is not limited to the above number, and may be less than six but must be greater than or equal to two, such as two, three, four, etc.; the number of second support members 6 may also be greater than six, such as seven, eight, etc.

[0058] In this embodiment, preferably, Figure 1 As shown, multiple battery packs 3 are stacked along a second preset direction b to form a bottom battery pack 4 and an upper multi-layer battery pack, and the upper multi-layer battery pack includes multiple layers of battery packs 3, each layer of which is connected to the second supporting member 6. That is to say, in this embodiment, the aforementioned upper battery pack 5 is connected to the second supporting member 6.

[0059] According to the structure described above, the second auxiliary support member plays a role in auxiliary supporting the upper battery pack 5, reducing the pressure on the bottom battery pack 4, thereby effectively avoiding damage to the bottom battery pack 4, and the overall structure is safer and more reliable.

[0060] In this embodiment, preferably, Figure 1 As shown, the multi-layer modular battery also includes a connecting member 7. Each layer of the battery pack 3 in the aforementioned upper multi-layer battery pack is equipped with a connecting member 7, and any connecting member 7 extends along the thickness direction of the battery cell 334 in the battery pack 3, and the two ends of the connecting member 7 are respectively connected to the two end plates 34 of the battery pack 3, and the connecting member 7 is also connected to the second support member 6.

[0061] According to the structure described above, the connecting member 7 plays a role of transfer, thereby realizing the connection between the second support member 6 and the battery pack 3. The two ends of the connecting member 7 extend to the two end plates 34 of the battery pack 3 respectively, and are connected to the two end plates 34 respectively. This position is convenient for connection with the end plates 34 and has high strength. In addition, the connecting member 7 extends along the thickness direction of the battery cell 334 of the battery pack 3, that is, the length direction of the upper battery pack 5, thereby increasing the contact area with the battery pack 3, thereby enhancing the support effect on the upper battery pack 5.

[0062] It should be noted that the number of connecting members 7 is not limited to one, which is the same as the number of layers of battery packs 3 included in the aforementioned upper multi-layer battery pack, that is, except for the bottom battery pack 4, each layer of the upper battery pack 3 is equipped with a connecting member 7, and the second support member 6 increases with the increase in the number of layers of the battery pack 3, and each connecting member 7 is connected to the second support member 6.

[0063] Of course, the structure of the connecting member 7 may also be removed, so that the second supporting member 6 is directly connected to the battery pack 3 included in the aforementioned upper multi-layer battery pack, depending on actual needs.

[0064] In this embodiment, preferably, Figure 7 As shown, each layer of battery pack 3 in the aforementioned upper multi-layer battery pack is detachably connected to the provided connecting member 7 by a fastening member such as a screw or a bolt (the fastening member is not shown in the figure), that is, the connecting member 7 and the two end plates 34 of the battery pack 3 spaced apart along its length direction are detachably connected by fastening members such as screws or bolts.

[0065] According to the structure described above, the connection member 7 and the battery pack 3 are connected in a detachable manner, which is convenient for later installation and disassembly, simple and convenient to operate, and especially convenient for later operation and maintenance. Of course, it is not limited to this. Each layer of the battery pack 3 in the upper multi-layer battery pack can also be connected to the provided connection member 7 by snapping, gluing, or welding.

[0066] In this embodiment, preferably, Fig.10 and Fig.11 As shown, the connecting member 7 and the second supporting member 6 are detachably connected by a fastening member (the fastening member is not shown in the figure). The connecting member 7 and the second supporting member 6 are detachably connected, which is convenient for later installation and disassembly, simple and convenient operation, and especially convenient for later operation and maintenance. Of course, it is not limited to this. The connecting member 7 and the second supporting member 6 can also be connected by buckle or gluing, or welding.

[0067] In this embodiment, preferably, Figures 4 to 7As shown, the connecting member 7 includes a bottom support plate 71, a side limiting plate 72, an end connecting plate 73 and a positioning plate 74 connected to each other; wherein, along the width direction of the battery cell 334 in the battery pack 3, the end connecting plate 73 is arranged at the end of the bottom support plate 71, and the end connecting plate 73 is connected to the end plate 34 of the battery pack 3; along the first preset direction a, the side limiting plate 72 is arranged on the side of the bottom support plate 71;

[0068] The side limiting plate 72 is formed with a bent connecting plate 75 bent toward the outside of the battery pack 3, and the bent connecting plate 75 abuts against the second supporting member 6 and is connected to the second supporting member 6 (in the present embodiment, preferably, the bent connecting plate 75 is arranged against the second supporting member 6, of course, not limited to this, the second supporting member 6 may also be provided with a horizontal plate extending toward the battery pack 3, so that the bent connecting plate 75 abuts against the upper surface of the horizontal plate, or the bent connecting plate 75 may be L-shaped and abut against the side of the second supporting member 6, etc., which is selected according to actual needs), after the bent connecting plate 75 is bent relative to the side limiting plate 72, it is more convenient to cooperate with the second supporting member 6;

[0069] The positioning plate 74 is connected to the bottom support plate 71 and the side limit plate 72 (of course, not limited to this, the positioning plate 74 can also be connected only to the bottom support plate 71 or the side limit plate 72, depending on the actual needs), and the positioning plate 74 is inserted into the positioning gap of the battery pack 3. It can be seen that the positioning plate 74 is plugged into the battery pack 3 to play a role in positioning the battery pack 3, and preferably, the aforementioned positioning plate 74 is inserted between the two adjacent battery modules 33 described below. At this time, the positioning plate 74 also plays a role in spacing the battery modules 33. In addition, the positioning plate 74 can also serve as a reinforcing rib to enhance the strength of the connecting member 7.

[0070] According to the structure described above, the bottom support plate 71 is supported on the bottom of the upper battery pack 5, and the side limit plate 72 is against the side of the battery pack 3, that is, the bottom support plate 71 and the side limit plate 72 are in an L-shaped structure, which is installed on the edge of the battery pack 3 extending along the length direction thereof to support and limit the battery pack 3.

[0071] Further, preferably, there are multiple bent connecting plates 75 , which are sequentially arranged at intervals along the length direction of the bottom supporting plate 71 .

[0072] Further, preferably, there are multiple positioning plates 74 , which are sequentially spaced apart along the length direction of the bottom support plate 71 .

[0073] Further, preferably, the end connecting plate 73 and the side limiting plate 72 are both arranged along the second preset direction b, and the bottom supporting plate 71 and the bent connecting plate 75 are both arranged along the horizontal direction and perpendicular to the end connecting plate 73 and the side limiting plate 72 .

[0074] Further, preferably, the bottom supporting plate 71, the side limiting plates 72, the end connecting plates 73 and the positioning plates 74 are an integrated structure.

[0075] In this embodiment, preferably, the surface of the connecting member 7 in contact with the battery pack 3 is provided with a first insulating layer to play a role of insulation protection.

[0076] In this embodiment, preferably, Figure 3 As shown, the second support member 6 and the base 1 are detachably connected by fastening members such as screws or bolts (the fastening members are not shown in the figure), which is convenient for installation and disassembly, especially for later disassembly, maintenance or replacement. Of course, it is not limited to this, and the second support member 6 and the base 1 can also be connected by snap fastening, gluing, or welding.

[0077] In this embodiment, preferably, Figure 3 and Fig.16 As shown, the second supporting member 6 includes a U-shaped frame 61, a back plate 62 and a bottom connecting plate 63; wherein the back plate 62 is arranged on the side of the U-shaped frame 61 away from the battery pack 3, the opening of the U-shaped frame 61 faces the base 1, and the bottom connecting plates 63 are respectively arranged on both sides of the opening end of the U-shaped frame 61, and the bottom connecting plates 63 are connected to the base 1 through the fastening members mentioned above, such as screws or bolts.

[0078] In this embodiment, preferably, Figure 8 and Fig. 9 As shown, a liquid cooling plate 8 is provided between the bottom battery pack 4 and the upper multi-layer battery pack and between each two adjacent battery packs 3 in the upper multi-layer battery pack, and any liquid cooling plate 8 is connected to the second supporting member 6 .

[0079] According to the structure described above, a liquid cooling plate 8 is provided between any two adjacent layers of battery packs 3 to cool and dissipate the heat of the battery packs 3, and the liquid cooling plate 8 can also support the battery packs 3 above it.

[0080] Further, preferably, the bottom support plate 71 of the connecting member 7 is placed on the upper surface of the liquid cooling plate 8, and preferably, the liquid cooling plate 8 is formed with a side protrusion 81 extending toward the second supporting member 6, and the bent connecting portion of the connecting member 7 abuts against the top of the side protrusion 81, and the two are detachably connected to the second supporting member 6 through the same fastening member. Of course, it is not limited to this. The connecting member 7 can also be spaced apart from the liquid cooling plate 8 along the height direction of the battery pack 3, which can be selected according to actual needs.

[0081] In this embodiment, preferably, Figure 2As shown, any battery pack 3 is detachably connected to the first support member 2 by a fastening member such as a screw or a bolt (the fastening member is not shown in the figure), which is convenient for installation and disassembly, especially for later maintenance or replacement. Of course, it is not limited to this, and any battery pack 3 can also be connected to the first support member 2 by snapping, gluing, or welding.

[0082] In this embodiment, preferably, Figure 2 As shown, the first support member 2 and the base 1 are detachably connected by fastening members such as screws or bolts (the fastening members are not shown in the figure), which is convenient for installation and disassembly, especially for later maintenance or replacement. Of course, it is not limited to this, and the first support member 2 and the base 1 can also be connected by snapping or gluing, or welding.

[0083] In this embodiment, preferably, Figure 1 and Fig.15 As shown, there are two first support members 2 , which are respectively arranged at two ends of the battery module along the width direction of the battery cells 334 in the battery pack 3 .

[0084] According to the structure described above, two first support members 2 are used to support and fix the battery pack 3, making the entire structure stronger and more stable. Of course, the number of first support members 2 is not limited to this, and can also be one, depending on actual needs.

[0085] In this embodiment, preferably, Figure 1 and Figure 2 As shown, the first supporting member 2 is plate-shaped and extends in a preset direction to match the end of the battery module along its length direction.

[0086] Further, preferably, the first supporting member 2 is provided with a reinforcing rib plate to increase the overall strength.

[0087] Furthermore, preferably, flanges 21 are provided on the top and bottom of the first support member 2, and mounting holes are provided on the flanges 21 for installing bolts to facilitate its connection with the base 1 and the top battery pack 3. In addition, mounting holes are provided on other structures of the first support member 2 except the flanges 21 for installing bolts to facilitate its locking with the end plate 34 of the battery pack 3.

[0088] In this embodiment, preferably, Figure 1 As shown, the base 1 is a shell structure with an opening at the bottom and a reinforcing beam arranged inside, which not only ensures the strength but also contributes to lightweight design compared with a solid structure.

[0089] In this embodiment, preferably, Fig.15As shown, the battery pack 3 includes a lower base plate 31, an upper cover plate 32, a battery module 33, an end plate 34 and a pole support plate 35; wherein the battery module 33 includes a battery cell 334 assembly, and the battery cell 334 assembly includes a plurality of battery cells 334 arranged in sequence; the battery module 33 is arranged on the lower base plate 31, the upper cover plate 32 is arranged on the top of the battery module 33, and the upper cover plate 32 is formed with a plug-in portion 321, and the first support member 2 is formed with a plug-in interface, and the plug-in portion 321 is inserted into the plug-in interface to play a positioning role; the upper cover plates 32 of at least some of the battery packs 3 in the plurality of battery packs 3 are connected to the first support member 2, and preferably, the plug-in portion 321 of the cover plate of the battery pack 3 located at the top layer in the aforementioned upper multi-layer battery pack is also connected to the flange 21 at the bottom of the first support member 2 by a fastening member such as a screw or a bolt;

[0090] There are two end plates 34, which are respectively arranged at opposite ends of the battery module 33 along the width direction of the battery cell 334, and a second insulating layer 36 is arranged between the battery cell 334 to play an insulating and protective role;

[0091] The end plate 34 is connected to the upper cover plate 32 and the first support member 2, and preferably, the end plate 34 is connected to the first support member 2 by a fastening member such as a screw or a bolt, and the end plate 34 is also connected to the upper cover plate 32 by a fastening member such as a screw or a bolt;

[0092] Along the length direction of the battery core 334, pole support plates 35 are provided on opposite sides of the battery module 33, and the pole support plates 35 play the role of supporting the pole and preventing electrolyte leakage;

[0093] The pole support plate 35 is connected to the upper cover plate 32 and the lower base plate 31, wherein, preferably, as Figure 4 , Fig.13 and Fig.14 As shown, the lower base plate 31 is formed with first auxiliary mounting flanges 21 on both sides along the second preset direction b, the first auxiliary mounting flanges 21 are formed with first waist-shaped holes 311, the pole support plate 35 is formed with first studs 351, and the first studs 351 are installed in the corresponding first waist-shaped holes 311 and are locked with nuts;

[0094] Among them, preferably, the upper cover plate 32 is formed with a second auxiliary mounting flange 21 on both sides along the second preset direction b, the second auxiliary mounting flange 21 is formed with a second waist-shaped hole, the pole support plate 35 is formed with a second stud 352, and the second stud 352 is installed in the corresponding second-shaped hole and locked with a nut.

[0095] Further, preferably, Fig.13As shown, the lower bottom plate 31 is formed with an avoidance notch 312 for avoiding the positioning plate 74 of the connecting member 7 mentioned above.

[0096] Based on the structure described above, it can be seen that the battery pack is modularly designed, and the number of battery packs can be increased or decreased according to actual needs to meet customers' needs for different power levels.

[0097] In this embodiment, preferably, Fig.12 As shown, the battery module 33 further includes an aluminum plate 331, an injection molded part 332 and a third insulating layer 333; wherein the aluminum plate 331 is bonded to the top, bottom and both sides along the width direction of the battery cell 334 component, and the third insulating layer 333 is provided between any aluminum plate 331 and the battery cell 334;

[0098] The large surface formed by the length and height directions of the battery cell 334 is parallel to the first preset direction a; along the length direction of the battery cell 334, injection molding parts 332 are provided at both ends of the stacking structure formed by multiple battery cells 334, and the injection molding parts 332 are clamped with a bus 335, a total positive lead bar 336 and a total negative lead bar 337. The bus 335 is used to realize the series and parallel connection of multiple battery cells 334, and the total positive lead bar 336 and the total negative lead bar 337 are used as the total positive and total negative leads.

[0099] According to the structure described above, the aluminum plate 331 is used to quickly dissipate heat, and the injection molded part 332 is used for insulation. The bus 335, the total positive lead bar 336 and the total negative lead bar 337 can be installed thereon, which is safer and more reliable.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-layer modular battery, characterized in that: include: A base, a first supporting member and a plurality of battery packs; wherein the plurality of battery packs are stacked on the base along a preset direction to form a battery module; The first supporting member is fixed on the base, and the plurality of battery packs are all connected to the first supporting member.

2. The multi-layer modular battery according to claim 1, characterized in that: The preset direction includes a first preset direction and a second preset direction, and the first preset direction is the same as a length direction of the battery cells in the battery pack, and the second preset direction is the same as a height direction of the battery cells in the battery pack.

3. The multi-layer modular battery according to claim 2, characterized in that: The multi-layer modular battery further includes at least two second supporting members, and the at least two second supporting members are both fixed to the base and respectively abut against two sides of the battery module along the first preset direction.

4. The multi-layer modular battery according to claim 3, characterized in that: A plurality of the battery packs are stacked along the second preset direction to form a bottom battery pack and an upper multi-layer battery pack, and the upper multi-layer battery pack includes multiple layers of battery packs, and each layer of the battery pack is connected to the second supporting member.

5. The multi-layer modular battery according to claim 4, characterized in that: The multi-layer modular battery also includes a connecting member, each layer of the upper multi-layer battery pack is equipped with a connecting member, and any of the connecting members extends along the thickness direction of the battery cells in the battery pack, and the two ends of the connecting member are respectively connected to the two end plates of the battery pack, and the connecting member is also connected to the second supporting member.

6. The multi-layer modular battery according to claim 5, characterized in that: Each layer of the battery pack in the upper multi-layer battery pack is detachably connected to the provided connecting member via a fastening member; and / or The connecting member and the second supporting member are detachably connected via a fastening member; and / or A surface of the connection member in contact with the battery pack is provided with a first insulating layer.

7. The multi-layer modular battery according to claim 5, characterized in that: The connecting member includes a bottom support plate, a side limiting plate, an end connecting plate and a positioning plate connected to each other; wherein, along the width direction of the battery cell in the battery pack, the end connecting plate is arranged at the end of the bottom support plate, and the end connecting plate is connected to the end plate of the battery pack; along the first preset direction, the side limiting plate is arranged on the side of the bottom support plate; The side limiting plate is formed with a bent connecting plate bent toward the outside of the battery pack, and the bent connecting plate abuts against and is connected to the second supporting member; the positioning plate is connected to the bottom support plate and / or the side limiting plate, and the positioning plate is inserted into the positioning gap of the battery pack.

8. The multi-layer modular battery according to claim 3, characterized in that: The second supporting member is detachably connected to the base.

9. The multi-layer modular battery according to claim 4, characterized in that: A liquid cooling plate is provided between the bottom battery pack and the upper multi-layer battery pack and between every two adjacent battery packs in the upper multi-layer battery pack, and any of the liquid cooling plates is connected to the second supporting member.

10. The multi-layer modular battery according to claim 1, characterized in that: Any of the battery packs is detachably connected to the first supporting member; and / or The first supporting member is detachably connected to the base; and / or The first supporting member is disposed at at least one end of the battery module along a width direction of the battery cells in the battery pack.

11. The multi-layer modular battery according to any one of claims 1 to 10, characterized in that: The battery pack includes a lower base plate, an upper cover plate, a battery module, an end plate and a pole support plate; wherein the battery module includes a cell assembly, and the cell assembly includes a plurality of cells arranged in sequence; the battery module is arranged on the lower base plate, the upper cover plate is arranged on the top of the battery module, and the upper cover plate is formed with a plug-in portion, the first support member is formed with a plug-in port, the plug-in portion is plugged into the plug-in port, and the upper cover plates of at least some of the battery packs in the plurality of battery packs are connected to the first support member; There are two end plates, which are respectively arranged at opposite ends of the battery module along the width direction of the battery cell, and a second insulating layer is arranged between the battery cell; the end plates are connected to the upper cover plate and the first supporting member; along the length direction of the battery cell, the pole support plates are arranged on opposite sides of the battery module; the pole support plates are connected to the upper cover plate and the lower base plate.

12. The multi-layer modular battery according to claim 11, characterized in that: The battery module also includes an aluminum plate, an injection molded part and a third insulating layer; wherein the aluminum plate is respectively bonded to the top, bottom and both sides along the width direction of the battery cell assembly, and the third insulating layer is arranged between the aluminum plate and the battery cell; along the length direction of the battery cell, the injection molded parts are arranged at both ends of the stacking structure formed by multiple battery cells, and the injection molded parts are clamped with a bus bar, a total positive lead bar and a total negative lead bar.

Images