Integrated battery PACK box

Abstract

The utility model belongs to the technical field of batteries, and discloses an integrated battery PACK box. The PACK box comprises a box body, a PACK conducting strip, a busbar and a BMS, the PACK conducting strip, the busbar and the BMS are arranged in the box body, the box body, the PACK conducting strip and the busbar are integrally formed and connected, and therefore connecting pieces between the box body and the PACK conducting strip and between the box body and the busbar can be omitted, and finally the box body is connected with the BMS through threaded connecting pieces. By means of the integrated design, only the upper cover and the BMS are integrated, finally, the BMS is fixedly connected to the upper cover through the threaded connecting piece, and the PACK conducting strip, the busbar and the BMS can be assembled in the box body. Through the arrangement, the problems of scattered supplied materials and disordered management can be relieved to a certain extent, the management difficulty and cost of parts are reduced, meanwhile, the assembling procedures can be reduced, the cost of the assembling procedures and the cost of connecting pieces are saved, and therefore the production efficiency is improved, the production period is shortened, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to an integrated battery PACK box. BACKGROUND

[0002] At present, in the related industry, the design and installation of the upper cover, busbar and BMS in the battery PACK box are still in the stage of fixing and installing through a large number of bolts between single parts, which disperses the incoming materials, increases the management cost, and makes the assembly process complex, resulting in the lengthening of the production cycle, the reduction of the production rhythm and the increase of the production cost.

[0003] Therefore, an integrated battery PACK box is needed, which can simplify the assembly process, shorten the production cycle and reduce the production cost. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of integrated battery PACK boxes, which can improve integration, thereby simplify assembly process, shorten production cycle and reduce production cost.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Integrated battery PACK box, including box, PACK conductive sheet, busbar and BMS, the PACK conductive sheet, the busbar and the BMS are placed in the box, the box, the PACK conductive sheet and the busbar are integrally connected, and the box is connected with the BMS by threaded connection piece.

[0007] Preferably, the PACK conductive sheet includes PACK positive conductive sheet and PACK negative conductive sheet, and the PACK positive conductive sheet and the PACK negative conductive sheet are integrally formed in the box.

[0008] Preferably, the busbar includes positive aluminum bar and negative aluminum bar, and the positive aluminum bar and the negative aluminum bar are integrally formed in the box.

[0009] Preferably, the box is connected to the PACK conductive sheet and the busbar by integrally injection molding.

[0010] Preferably, the box includes an upper cover, and the upper cover is integrally connected to the PACK conductive sheet and the busbar.

[0011] Preferably, a threaded hole is formed in the box, a through hole is formed in the BMS, a threaded end of the threaded connection piece is arranged in the through hole and is threadedly connected to the threaded hole, and a nut end of the threaded connection piece is abutted against the BMS.

[0012] Preferably, the BMS is provided with a positioning portion, and the PACK conductive sheet and the busbar are connected to the BMS through the positioning portion.

[0013] Preferably, the positioning portion comprises a first positioning slot and a second positioning slot, the PACK conductive sheet is provided with a first pin, the first pin is fixedly inserted into the first positioning slot, and the busbar is provided with a second pin, and the second pin is fixedly inserted into the second positioning slot.

[0014] Preferably, the BMS is provided with a foolproof hole, and the box body is provided with a foolproof positioning pin, and the foolproof positioning pin is inserted into the foolproof hole.

[0015] Preferably, the same side of the BMS is provided with at least two spaced foolproof holes, and the box body is correspondingly provided with at least two foolproof positioning pins, and the foolproof positioning pins are correspondingly inserted into the foolproof holes.

[0016] The integrated battery PACK box has the advantages that: in the integrated battery PACK box, the box body is integrally connected with the PACK conductive sheet and the busbar, so that the connecting piece between the box body, the PACK conductive sheet and the busbar can be omitted. After the integrated design, the incoming materials only include the integrated box body and the BMS, so that the problems of material dispersion and management confusion can be solved to a certain extent, the difficulty and cost of part management are reduced, the assembly process is reduced, the assembly process cost and the connecting piece cost are saved, the production efficiency is improved, the production cycle is shortened, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the upper cover under a first visual angle provided by an embodiment of the utility model;

[0018] Figure 2 is a structural schematic diagram of the upper cover under a second visual angle provided by an embodiment of the utility model;

[0019] Figure 3 is an exploded structural schematic diagram of the upper cover provided by an embodiment of the utility model;

[0020] Figure 4 is a structural schematic diagram of the BMS provided by an embodiment of the utility model;

[0021] Figure 5 is a partial structural disassembly schematic diagram of the upper cover provided by an embodiment of the utility model.

[0022] In the drawings:

[0023] 11, upper cover; 111, threaded hole; 112, foolproof positioning pin;

[0024] 20, first pin; 21, PACK positive electrode conductive sheet; 22, PACK negative electrode conductive sheet;

[0025] 30, second pin; 31, positive electrode aluminum row; 32, negative electrode aluminum row;

[0026] 4, BMS; 41, through hole; 42, fool-proof hole; 43, positioning part; 431, first positioning groove; 432, second positioning groove;

[0027] 5, threaded connecting piece. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the embodiment, the terms "upper", "lower", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in description and have no special meaning.

[0032] The embodiments provided by the utility model will be described below in combination with the drawings and specific embodiments.

[0033] In combination with Figures 1 to 5 As shown in the drawings, the embodiment provides an integrated battery PACK box, which comprises a box body, PACK conductive sheets, busbars, a BMS 4 and a battery pack.

[0034] The box body comprises an upper cover 11 and a lower shell, and the upper cover 11 and the lower shell can be made of plastic, rubber, aluminum alloy or stainless steel, etc. The embodiment is not limited to this. The lower shell is a cylindrical structure with an opening at one end, and the upper cover 11 can be fixed and buckled on the opening part of the lower shell through fasteners to form a sealed inner cavity capable of placing the PACK conductive sheets, busbars, BMS 4 and battery pack, thereby ensuring the safety of the internal components.

[0035] The PACK conductive sheets comprise a PACK positive conductive sheet 21 and a PACK negative conductive sheet 22, wherein the PACK positive conductive sheet 21 is a positive port of the integrated battery PACK box and is connected to the positive poles of each battery monomer in the battery pack through the busbars inside the box body; the PACK negative conductive sheet 22 is a negative port of the integrated battery PACK box and is connected to the busbars inside the box body and the negative poles of each battery monomer in the battery pack. Through the PACK positive conductive sheet 21 and the PACK negative conductive sheet 22, the current of the battery pack can be ensured to flow smoothly to the external load, and a complete circuit loop is formed.

[0036] The busbars comprise a positive aluminum bar 31 and a negative aluminum bar 32, wherein the positive aluminum bar 31 is connected to the positive poles of each battery monomer and is used for collecting and conducting the positive current of the battery pack and integrating the current to the PACK positive conductive sheet 21, and the negative aluminum bar 32 is connected to each battery monomer and is used for collecting and conducting the negative current of the battery pack and integrating the current to the PACK negative conductive sheet 22.

[0037] The BMS 4 is conductively connected to the PACK positive conductive sheet 21, the PACK negative conductive sheet 22, the positive aluminum bar 31 and the negative aluminum bar 32, so that the monitoring and management of the battery pack can be realized to protect the charging and discharging process of the battery pack and ensure the safe operation of the battery pack in the appropriate temperature and voltage range.

[0038] In the embodiment, in combination with Figure 1 , Figure 2As shown, in order to simplify the installation process, the above-mentioned upper cover 11, PACK positive conductive sheet 21, PACK negative conductive sheet 22, positive aluminum bus bar 31 and negative aluminum bus bar 32 are integrally formed and connected, so that the connecting pieces between the upper cover 11 and the PACK positive conductive sheet 21, the upper cover 11 and the PACK negative conductive sheet 22, the upper cover 11 and the positive aluminum bus bar 31, and the upper cover 11 and the negative aluminum bus bar 32 can be omitted. After the integrated design, the incoming material only has two components of the integrated upper cover 11 and the BMS 4. In this embodiment, the BMS 4 is fixedly connected to the upper cover 11 by using the threaded connecting piece 5, so as to complete the assembly of the PACK conductive sheet, the bus bar and the BMS 4 in the box. Through the above-mentioned setting, the problem of incoming material dispersion and management confusion can be alleviated to a certain extent, the difficulty and cost of component management are reduced, the assembly process is also reduced, the assembly process cost and the cost of connecting pieces are saved, so as to improve the production efficiency, shorten the production cycle and reduce the production cost.

[0039] Specifically, one of the embodiments of the present embodiment is to combine Figure 3 、 Figure 4 As shown, a threaded hole 111 is formed on the upper cover 11, a through hole 41 is formed on the BMS 4, and a threaded segment of the threaded connecting piece 5 (such as a bolt, a screw, etc.) is arranged in the through hole 41 and is threadedly connected to the threaded hole 111. The end cap of the threaded connecting piece 5 abuts against the BMS 4, so as to clamp and fix the BMS 4 on the upper cover 11.

[0040] Optionally, in this embodiment, the upper cover 11, the PACK conductive sheet and the bus bar are fixedly connected by using the one-piece injection molding method. The one-piece injection molding method can ensure the production efficiency of the upper cover 11, is suitable for the demand of mass production in actual working conditions, can effectively control the production cost, has higher precision and better surface quality after molding.

[0041] In this embodiment, as shown in Figure 3 、 Figure 4 A foolproof positioning pin 112 is arranged on the upper cover 11, and a foolproof hole 42 is arranged at a corresponding position of the BMS 4. By arranging the foolproof positioning pin 112 in the foolproof hole 42, the accuracy of the assembly position between the BMS 4 and the upper cover 11 can be realized, and the mispositioning of the BMS 4 during installation can be avoided.

[0042] Preferably, as shown in Figure 4 Two foolproof positioning pins 112 are arranged at two ends of the same side of the box, and two foolproof holes 42 are arranged at corresponding positions of the BMS 4. The two foolproof positioning pins 112 are arranged in the two foolproof holes 42 one by one, so as to ensure the stability of the BMS 4 after being positioned and installed on the upper cover 11, prevent rotation, and enable the PACK conductive sheet, the bus bar and other components to be connected to the BMS 4 at a preset position.

[0043] Of course, in other embodiments, the BMS 4 can also be better fixed by setting more than two groups of foolproof positioning pins 112 and foolproof holes 42, and therefore the utility model is not limited in the number of foolproof positioning pins 112 and foolproof holes 42.

[0044] Specifically, in the embodiment, the BMS 4 is provided with a positioning part 43, and the PACK conductive sheet and the busbar are connected to the BMS 4 through the positioning part 43, so as to ensure that the PACK conductive sheet and the busbar can be connected to the BMS 4 in a preset position.

[0045] More specifically, as shown in Figure 4 、 Figure 5 , the positioning part 43 includes a first positioning groove 431 and a second positioning groove 432. In one embodiment of the embodiment, the first positioning groove 431 is provided with two groups, each group of the first positioning groove 431 has six, and is arranged in two rows on the BMS 4; the second positioning groove 432 is also provided with two groups, each group of the second positioning groove 432 has three, and is arranged in a row on the BMS 4, and the two groups of second positioning grooves 432 are arranged on both sides of the two groups of first positioning grooves 431. In the PACK conductive sheet, the PACK positive conductive sheet 21 and the PACK negative conductive sheet 22 are each provided with six first pins 20, and the six first pins 20 in the PACK positive conductive sheet 21 are sequentially and correspondingly inserted into one of the first positioning grooves 431, and the six first pins 20 in the PACK negative conductive sheet 22 are sequentially and correspondingly inserted into the other group of first positioning grooves 431, thereby achieving precise positioning of the PACK conductive sheet. In the busbar, the positive aluminum bar 31 and the negative aluminum bar 32 are each provided with three second pins 30, and the three second pins 30 in the positive aluminum bar 31 are sequentially and correspondingly inserted into one of the second positioning grooves 432, and the three second pins 30 in the negative aluminum bar 32 are sequentially and correspondingly inserted into the other group of second positioning grooves 432, thereby achieving precise positioning of the busbar.

[0046] It should be noted that the number of each group of first positioning grooves 431 is determined according to the number of first pins 20 of the PACK positive conductive sheet 21 and the PACK negative conductive sheet 22, and the number of each group of second positioning grooves 432 is determined according to the number of second pins 30 of the positive aluminum bar 31 and the negative aluminum bar 32, and the utility model is not limited thereto.

[0047] Optionally, in the embodiment, the first positioning groove 431 and the first pin 20 have the same cross-sectional shape, the second positioning groove 432 and the second pin 30 have the same cross-sectional shape, and both are square in shape, which can ensure that the PACK positive conductive sheet 21, the PACK negative conductive sheet 22, the positive aluminum bar 31 and the negative aluminum bar 32 are connected to the BMS 4 in the correct alignment direction.

[0048] Preferably, in the present embodiment, the PACK positive electrode conductive sheet 21, the PACK negative electrode conductive sheet 22, the positive electrode aluminum row 31 and the negative electrode aluminum row 32 are all connected to the BMS 4 by welding, so as to further reduce the use of fasteners, thereby being beneficial to control costs, improve production efficiency and save the use of space.

[0049] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An integrated battery PACK case, characterized by, The box, PACK conductive sheet, busbar and BMS (4) are integrally connected.

2. The integrated battery PACK box according to claim 1, characterized by, The PACK conductive sheet includes PACK positive conductive sheet (21) and PACK negative conductive sheet (22), which are integrally formed on the box.

3. The integrated battery PACK box of claim 1, wherein, The busbar includes positive aluminum busbar (31) and negative aluminum busbar (32), which are integrally formed on the box.

4. The integrated battery PACK box of claim 1, wherein, The box is connected to the PACK conductive sheet and the busbar by integrally injection molding.

5. The integrated battery PACK box of claim 1, wherein, The box includes an upper cover (11) integrally connected to the PACK conductive sheet and the busbar.

6. The integrated battery PACK box of claim 5, wherein, The upper cover (11) is provided with a threaded hole (111), and the BMS (4) is provided with a through hole (41), the threaded end of the threaded connector (5) is arranged in the through hole (41) and is threadedly connected to the threaded hole (111), and the nut end of the threaded connector (5) is abutted against the BMS (4).

7. The integrated battery PACK box according to any one of claims 1-6, characterized in that, The BMS (4) is provided with a positioning part (43), and the PACK conductive sheet and the busbar are connected to the BMS (4) through the positioning part (43).

8. The integrated battery PACK box of claim 7, wherein, The positioning part (43) includes a first positioning groove (431) and a second positioning groove (432), the PACK conductive sheet is provided with a first pin (20), the first pin (20) is fixedly inserted into the first positioning groove (431), and the busbar is provided with a second pin (30), the second pin (30) is fixedly inserted into the second positioning groove (432).

9. The integrated battery PACK box according to any one of claims 1-6, characterized in that, The BMS (4) is provided with a foolproof hole (42), and the box is provided with a foolproof positioning pin (112), the foolproof positioning pin (112) is arranged in the foolproof hole (42).

10. The integrated battery PACK box of claim 9, wherein, The same side of the BMS (4) is provided with at least two spaced foolproof holes (42), and the box is provided with at least two corresponding foolproof positioning pins (112), the foolproof positioning pins (112) are arranged in the foolproof holes (42) one by one.

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