CN206312979U - Battery modules - Google Patents

Abstract

A battery module, including multiple battery packs and series circuit boards; each battery pack includes multiple single cells, fixing brackets, negative elastic parts and parallel circuit boards; the positive end of each single cell is provided with a cap The fixed bracket includes a main body and a storage groove formed by extending from the main body to a direction away from the main body; the positive end of each single battery is stored in a corresponding storage groove; the negative elastic member is multiple and includes a base and a plurality of elastic pieces ; the base is fixed on the cap; the parallel circuit board leans against the base of a plurality of negative elastic members; a plurality of battery packs are adjacently arranged to form a first module and a second module; the negative terminals of each battery pack are abutted On the parallel circuit board of the adjacent battery pack, and the elastic piece is clamped on the casing of the single battery; the first module and the second module are electrically connected together through the series circuit board. The battery module provided by the utility model has high connection reliability and strong anti-vibration ability, and can realize modularization and standardized production.

Description

battery module

【Technical field】

The utility model relates to the field of batteries, in particular to a battery module.

【Background technique】

With the increasingly serious problems of energy crisis and environmental pollution, safety, environmental protection and energy saving have become the themes of the development of the automobile industry today. Due to the advantages of energy saving, environmental protection and no pollution, new energy vehicles have been highly valued and strongly supported by the transportation and energy departments. As the power source of electric vehicles, battery modules are an indispensable part of the power system of electric vehicles. However, the structure of the current battery module is complex, and it is difficult to achieve modularization and standardized production; the installation and disassembly of the battery module is not easy, and the maintenance cost is high; at the same time, the connection reliability of the battery module is low.

In view of this, it is necessary to provide a battery module to overcome the shortcomings of the prior art.

【Content of utility model】

The purpose of the utility model is to provide a battery module with simple structure, convenient installation and disassembly, high connection reliability, strong anti-vibration ability, and can realize modularization and standardized production.

In order to achieve the above object, the utility model provides a battery module, including a plurality of battery packs, series circuit boards and fixing parts; A circuit board; each single battery includes opposite positive and negative terminals, and a cap is provided on the positive terminal; the fixing bracket includes a main body and a plurality of housings formed by extending from the main body to a direction away from the main body Groove; the positive end of each single battery is accommodated in a corresponding accommodating groove; the negative elastic member is multiple and includes a base and a plurality of elastic sheets formed by extending from the edge of the base; the base fixed on the cap; the parallel circuit board leans against the bases of the plurality of negative elastic members; a plurality of the battery packs are adjacently arranged to form a first module and a second module; each battery pack The negative end of the battery pack is abutted against the parallel circuit board of the adjacent battery pack, and the elastic sheet is clamped on the shell of the single battery; each battery pack of the first module is connected to the battery pack of the second module Each battery pack is placed adjacently and oppositely, the first module and the second module are electrically connected together through the serial circuit board; the fixing member fixes the battery modules together.

In a preferred embodiment, the accommodating groove is cylindrical and the diameter corresponds to the diameter of the single battery; the base is circular and the diameter corresponds to the diameter of the single battery; the plurality of elastic The arc shape enclosed by the sheet, and the diameter of the section along the direction perpendicular to the central axis of the base gradually increases from the base to the direction away from the base.

In a preferred embodiment, the parallel circuit board is provided with a plurality of clamping parts and opened with a plurality of through holes; the clamping part is circular and has a diameter corresponding to the diameter of the base, and each clamping The holding portion abuts against a corresponding base and the elastic piece passes through the corresponding through hole.

In a preferred embodiment, the number of battery packs in the first module is equal to the number of battery packs in the second module; both the first module and the second module include a first terminal; the series circuit board Located at the first end of the first module and the second module and including a first part and a second part; the first part is electrically connected to the cap of the battery pack at the first end of the first module, and the first part The two parts are electrically connected to the negative elastic member of the battery pack located at the first end of the second module.

In a preferred embodiment, both the first module and the second module include a second end opposite to the first end; a positive lead-out assembly is arranged on the second end of the first module; The positive lead-out assembly includes a first bus circuit board and a positive terminal; the first bus circuit board is fixed on the cap of the battery pack near the second end, and the positive terminal is vertically fixed on the first bus circuit board .

In a preferred embodiment, the second end of the second module is provided with a negative lead-out assembly; the negative lead-out assembly includes a second bus circuit board and a negative terminal; the second bus circuit board is fixed close to the On the base of the battery pack at the second end, the negative terminal is vertically fixed on the second bus circuit board.

In a preferred embodiment, the battery module further includes two protective plates located at the first end and the second end respectively; the protective plate located at the second end is provided with A first through hole for the positive terminal to pass through and a second through hole for the negative terminal to pass through.

In a preferred embodiment, a first installation hole is opened on the main body; a second installation hole corresponding to the first installation hole is opened on the protective plate; the fixing member includes a screw rod and is matched with the screw rod nut; the screw rod is multiple and provided with double-start threads; the screw rod passes through the first installation hole and the second installation hole, and cooperates with the nut to fix the battery module together .

In a preferred embodiment, the fixing member further includes a gasket; the gasket is annular and has a diameter corresponding to the diameter of the screw; the gasket is sleeved on the screw and located on the protective plate near the side of the battery pack.

The battery module provided by the utility model has simple structure, convenient installation and disassembly, high connection reliability, strong anti-vibration ability, and can realize modularization and standardized production.

【Description of drawings】

Fig. 1 is the overall structure diagram of the battery module of the present invention.

FIG. 2 is an exploded structure diagram of the battery module shown in FIG. 1 .

FIG. 3 is an exploded view of the structure of the battery pack in FIG. 2 .

FIG. 4 is a structural diagram of some components in FIG. 3 .

Fig. 5 is an exploded view of part of the structure in Fig. 2 .

Fig. 6 is an exploded view of another part of the structure in Fig. 2 .

FIG. 7 is a structural diagram of the protective plate in FIG. 2 .

【detailed description】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

As shown in FIGS. 1 to 5 , a battery module 100 provided by the present invention includes a plurality of battery packs 101 , series circuit boards 20 and fixing parts 60 .

Each battery pack 101 includes a plurality of single cells 10 arranged side by side, a fixing bracket 11 , a negative elastic member 12 and a parallel circuit board 13 . Specifically, each single battery 10 is cylindrical and includes a positive terminal 14 and a negative terminal 15 opposite to each other, and a cap 16 is disposed on the positive terminal 14 . The fixing bracket 11 includes a main body 111 and a plurality of receiving grooves 112 extending from the main body 111 away from the main body 111 . In this embodiment, the main body 111 defines a first installation hole (not shown).

The negative elastic member 12 is multiple and includes a base 121 and a plurality of elastic pieces 122 extending from the edge of the base 121 in a direction away from the base 121 . In this embodiment, the base 121 is circular and has a diameter corresponding to the diameter of the single battery 10; the arc formed by the plurality of elastic pieces 122 is along the The diameter of the section in the direction gradually increases from the base 111 to the direction away from the base 111 . In this embodiment, the plurality of negative electrode elastic members 12 are integrated.

The parallel circuit board 13 abuts against the bases 121 of the plurality of negative electrode elastic members 12 and is used for parallel connection of the plurality of single cells 10 of each battery pack 101 . In this embodiment, the parallel circuit board 13 is provided with a plurality of clamping portions 131 corresponding to the base 121 and is provided with a plurality of through holes 132 through which the elastic piece 122 passes. The clamping portion 131 is circular and has a diameter corresponding to the diameter of the base 121 , each circular clamping portion 131 abuts against the base 121 of a corresponding negative elastic member 12 , and the elastic piece 122 pass through the corresponding through holes 132 . In this embodiment, each clamping portion 131 is fixed together with a corresponding one of the bases 121 by welding.

When assembling the battery pack 101, first store the positive end 14 of the single battery 10 in the receiving groove 112 of the fixing bracket 11, and fix each base 121 on a corresponding one of the caps 16; The clamping portion 131 of the parallel circuit board 13 abuts against the corresponding base 121 , and allows the elastic piece 122 to pass through the corresponding through hole 132 .

In this embodiment, a plurality of the battery packs 101 are arranged adjacent to each other to form a first module 102 and a second module 103 . Specifically, the negative terminal 15 of the single cell 10 of each battery pack 101 abuts against the clamping portion 131 of the parallel circuit board 12 of the adjacent battery pack 101, and the elastic piece 122 is clamped on the single cell On the casing of the battery 10 (that is, the negative pole of the single battery). Due to the arrangement of the negative electrode elastic member 12 and the parallel circuit board 13, the contact area of the positive and negative electrodes of the single cells 10 of the adjacent battery pack 101 is increased, the contact resistance is reduced, and the connection reliability is further improved.

The number of battery packs 101 of the first module 102 is equal to the number of battery packs 101 of the second module 102; each battery pack 101 of the first module 102 is equal to each battery pack 101 of the second module 103 Adjacent and oppositely placed, and the first module 102 and the second module 103 are electrically connected together through the series circuit board 20 . In this embodiment, the number of the first module 102 and the second module 103 is six; understandably, in other embodiments, the number of the first module 102 and the second module 103 It can also be designed according to specific needs. Specifically, both the first module 102 and the second module 103 include opposite first ends 104 and second ends 105; wherein, the series circuit board 20 is located between the first module 102 and the second The first end 104 of the second module 103 .

Please refer to FIG. 5 , the series circuit board 20 includes a first part 21 and a second part 22 . The first part 21 is electrically connected to the cap 16 of the battery pack 101 located at the first end 104 of the first module 102, and the second part 22 is electrically connected to the battery pack 101 located at the first end 104 of the second module 103. The negative elastic member 12 is electrically connected. In this embodiment, the cap 16 is fixed on the first part 21 by welding, and the base 121 of the negative elastic member 12 is fixed on the second part 22 by welding.

Please refer to FIG. 2 and FIG. 6 , the positive lead-out assembly 30 is disposed on the second end 105 of the first module 102 , and the negative lead-out assembly 40 is disposed on the second end 105 of the second module 103 . The positive lead-out assembly 30 includes a first bus circuit board 31 and a positive terminal 32; the first bus circuit board 31 is fixed on the cap 16 of the battery pack 101 near the second end 105, and the positive terminal 32 is vertical It is fixed on the first bus circuit board 31 . The negative lead-out assembly 40 includes a second bus circuit board 41 and a negative terminal 42; the second bus circuit board 41 is fixed on the base 121 of the battery pack 101 near the second end 105, and the negative terminal 42 Vertically fixed on the second bus circuit board 41 . The first bus circuit board 31 has the same structure as the second bus circuit board 32 .

Please refer to FIG. 7 , the battery module 100 also includes two protective plates 50 , and there are two protective plates 50 located at the first end 104 and the second end 105 respectively; The protective plate 50 of 105 is provided with a first through hole 51 through which the positive terminal 32 passes through and a second through hole 52 through which the negative terminal 42 passes through. Specifically, the protective plate 50 is made of insulating material. In this embodiment, the protection plate 50 is provided with a second installation hole 53 corresponding to the first installation hole.

In this embodiment, the fixing member 60 fixes the battery modules 100 together. The fixing member 60 includes a screw 61 , a nut 62 and a washer 63 cooperating with the screw 61 . Specifically, there are multiple screws 61 with double-start threads. The washer 63 is annular and has a diameter corresponding to the diameter of the screw 61 , and the washer 63 is sheathed on the screw 61 . In this embodiment, the gasket 63 is disposed on a side of the protection plate 50 close to the battery pack 101 . The screw 61 passes through the first mounting hole and the second mounting hole 53 , and cooperates with the nut 62 to securely connect the battery modules 100 together. Since the battery module 100 uses a plurality of the screw rods 62 as positioning rods for assembly, the installation and disassembly of the battery module 100 is more convenient.

When assembling, firstly, the positive terminal 14 of the single battery 10 is accommodated in the receiving groove 112 of the main body 111 of the fixing bracket 11, and then the base 121 of each negative elastic member 12 is fixed on a corresponding Finally, the parallel circuit board 13 is placed against the bases 121 of the plurality of negative elastic members 12 to form the battery pack 101 . Next, a plurality of battery packs 101 are arranged adjacent to each other, so that the negative end 15 of the single battery 10 of each battery pack 101 is held against the base 121 of the negative electrode elastic member 12 of the adjacent battery pack 101, and the A plurality of elastic pieces 122 on the base 121 are clamped on the casing of the single battery 10 to form the first module 102 and the second module 103 . Then, the series circuit board 20 is arranged on the first end 104 of the first module 102 and the second module 103, and the positive lead-out assembly 30 is arranged on the second end 105 of the first module 102 , disposing the negative lead-out assembly 40 on the second end 105 of the second module 103 . Specifically, the first part 21 of the series circuit board 20 is electrically connected to the positive end 14 cap 16 of the battery pack 101 located at the first end 104 of the first module 102, and the second part 22 is electrically connected to the positive end 14 cap 16 located at the first end 104 of the first module 102. The first end 104 of the second module 103 is electrically connected to the negative elastic member 12 of the battery pack 101 . Finally, fix the two protective plates 50 to the first end 104 and the second end 105 respectively, pass through the first mounting hole and the second mounting hole 53 through the screw rod 61 and connect with the The nuts 62 cooperate to securely connect the battery modules 100 together.

The battery module provided by the utility model has simple structure, convenient installation and disassembly, high connection reliability, strong anti-vibration ability, and can realize modularization and standardized production.

The utility model is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (9)

1. A battery module, characterized in that: it comprises a plurality of battery packs, series circuit boards and fixtures; each battery pack comprises a plurality of single cells arranged side by side, fixed brackets, negative pole elastics and parallel circuit boards; Each single battery includes opposite positive and negative terminals, and the positive terminal is provided with a cap; the fixing bracket includes a main body and a plurality of receiving grooves extending from the main body to a direction away from the main body; each The positive end of a single battery is accommodated in a corresponding storage groove; the negative elastic member is multiple and includes a base and a plurality of elastic sheets formed by extending from the edge of the base; the base is fixed on the base on the cap; the parallel circuit board leans against the bases of the plurality of negative elastic members; a plurality of the battery packs are adjacently arranged to form a first module and a second module; the negative end of each battery pack abut against the parallel circuit board of the adjacent battery pack, and the elastic piece is clamped on the shell of the single battery; each battery pack of the first module and each battery of the second module The groups are placed adjacently and oppositely, the first module and the second module are electrically connected together through the serial circuit board; the fixing member fixes the battery modules together. 2. The battery module according to claim 1, wherein: the storage tank is cylindrical and has a diameter corresponding to the diameter of the single battery; the base is circular and has a diameter corresponding to the single battery The diameter of the battery corresponds to the arc formed by the plurality of elastic sheets, and the diameter of the section along the direction perpendicular to the central axis of the base gradually increases from the base to the direction away from the base. 3. The battery module according to claim 1, characterized in that: the parallel circuit board is provided with a plurality of clamping parts and opened with a plurality of through holes; the clamping part is circular and has a diameter equal to that of the The diameters of the bases correspond to each other, each clamping portion abuts against a corresponding base, and the elastic piece passes through the corresponding through hole. 4. The battery module according to claim 1, wherein the number of battery packs in the first module is equal to the number of battery packs in the second module; both the first module and the second module are Including a first end; the series circuit board is located at the first end of the first module and the second module and includes a first part and a second part; the first part and the first part at the first end of the first module The cap of the battery pack is electrically connected, and the second part is electrically connected to the negative elastic member of the battery pack located at the first end of the second module. 5. The battery module according to claim 4, wherein both the first module and the second module include a second end opposite to the first end; the second end of the first module The two ends are provided with a positive lead-out assembly; the positive lead-out assembly includes a first bus circuit board and a positive terminal; the first bus circuit board is fixed on the cap of the battery pack near the second end, and the positive terminal is vertical fixed on the first bus circuit board. 6. The battery module according to claim 5, characterized in that: the second end of the second module is provided with a negative lead-out assembly; the negative lead-out assembly includes a second bus circuit board and a negative terminal; The second bus circuit board is fixed on the base of the battery pack near the second end, and the negative terminal is vertically fixed on the second bus circuit board. 7. The battery module according to claim 6, characterized in that: the battery module further comprises two protective plates, which are located at the first end and the second end respectively; A first through hole for the positive terminal to pass through and a second through hole for the negative terminal to pass through are opened on the protective plate at the second end. 8. The battery module according to claim 7, wherein: the main body is provided with a first installation hole; the protection plate is provided with a second installation hole corresponding to the first installation hole; The fixing part includes a screw rod and a nut matched with the screw rod; the screw rod is multiple and provided with a double thread; the screw rod passes through the first installation hole and the second installation hole, and is connected with the nut cooperate to fix the battery modules together. 9. The battery module according to claim 8, characterized in that: the fixing member further includes a gasket; the gasket is circular and has a diameter corresponding to the diameter of the screw rod; the gasket is sleeved on The screw rod is located on a side of the protective plate close to the battery pack.