CN206313017U - A kind of battery modules - Google Patents

Abstract

A battery module, including a battery assembly, a base assembly, and a circuit board assembly; the battery assembly includes a plurality of single cells and a plurality of positive connecting posts, each single battery includes a positive terminal and a casing, and each positive connecting post A plurality of protrusions are formed, and each positive connecting column is fixed to the positive end of a corresponding single battery; the base assembly includes a plurality of negative elastic parts, a fixed base, a plurality of positive fixing seats and a plurality of positive elastic parts, and the fixed The base is provided with a plurality of through holes, and each negative electrode elastic member is accommodated in a corresponding through hole, and each positive electrode fixing seat is provided with a plurality of slots corresponding to the protrusions; the circuit board assembly includes a negative electrode manifold, and a negative electrode The positive manifold opposite to the manifold and the insulating plate arranged between the negative manifold and the positive manifold. The battery module of the utility model has the advantages of taking power from the same side, wireless connection, convenient assembly and disassembly, reliable connection and easy production.

Description

A battery module

【Technical field】

The utility model relates to the technical field of electric vehicles, in particular to a battery module.

【Background technique】

Under the dual pressure of environmental pollution and energy shortage, the automobile industry is facing severe challenges, and new energy to replace petroleum has become an inevitable choice. Major automobile companies and scientific research institutions at home and abroad are committed to the development of new energy vehicles, and have achieved considerable development. As the power source of new energy vehicles, the importance of power batteries is self-evident. However, the existing power battery connection method is complicated and unreliable, difficult to install and replace, high maintenance cost, complicated way to get power from positive and negative electrodes, and great potential safety hazard.

【Content of utility model】

The purpose of the utility model is to provide a battery module with power taking from the same side, wireless connection, convenient assembly and disassembly, reliable connection and easy production.

In order to achieve the above purpose, the utility model provides a battery module, including a battery assembly, a base assembly, and a circuit board assembly; the battery assembly includes a plurality of single cells and a plurality of positive connection posts, each The positive terminal and the casing, each positive connecting post is formed with a plurality of protrusions, and each positive connecting post is fixed to the positive terminal corresponding to a single battery; the base assembly includes a plurality of negative elastic parts, a fixed base, A plurality of positive electrode fixing seats and a plurality of positive electrode elastic parts, the fixed base is provided with a plurality of through holes, each negative electrode elastic part is accommodated in a corresponding through hole, and each positive electrode fixing seat is provided with a plurality of corresponding holes. The raised slot; the circuit board assembly includes a negative manifold, a positive manifold opposite to the negative manifold, and an insulating plate arranged between the negative manifold and the positive manifold; each positive One end of the elastic member passes through the negative bus plate and the insulating plate and is fixed to the positive bus plate, and each positive pole fixing seat is fixed to the positive pole bus plate and accommodates a corresponding positive pole elastic piece in the positive pole fixing seat , the negative elastic member and the fixing base are fixed on the negative manifold, the negative elastic member is electrically connected to the negative manifold, and the positive connecting column of the single battery is inserted into the fixing base The through hole of the seat, the shell of the single battery is clamped on the negative elastic member and electrically connected, the positive connecting post passes through the positive fixing seat and the positive elastic member is away from the positive bus plate One end abuts and is electrically connected, and the protrusion engages with the slot.

In a preferred embodiment, each positive electrode holder includes an upper surface and a lower surface opposite to the upper surface; each positive electrode holder is sequentially opened from the upper surface by a The first through hole and the second through hole, the junction of the first through hole and the second through hole forms a connecting surface; A plurality of perforations communicating with the first through hole, each perforation corresponds to a protrusion corresponding to a single battery; a plurality of perforations corresponding to the protrusions and communicating with the first through hole are also opened on the connection surface of each positive electrode holder. The card slot of a through hole.

In a preferred embodiment, each positive connecting column is cylindrical; the first through hole and the second through hole are round holes, and the diameter of the second through hole is larger than that of the first through hole. diameter, the diameter of the first through hole is consistent with the diameter of the positive connecting post.

In a preferred embodiment, each negative elastic member includes an elastic member body and a plurality of elastic pieces extending from the edge of the elastic member body to one side; the elastic member body is annular and welded to the negative electrode confluence The plate, the elastic piece is rectangular and arranged on the elastic piece body at intervals, and the elastic piece is concave toward the central axis of the elastic piece body.

In a preferred embodiment, the inner wall of each through hole is provided with a plurality of storage grooves corresponding to the elastic sheets of a negative electrode elastic member; the storage grooves are rectangular, and the width of the storage grooves is consistent with the width of the elastic sheets , the length of the receiving groove is greater than the length of the elastic sheet, and each elastic sheet leans against a corresponding receiving groove; the through hole is a round hole, and the inner diameter of the through hole is the same as the diameter of the single battery and The outer diameters of the elastic member bodies are consistent.

In a preferred embodiment, a first via hole corresponding to the through hole is opened on the negative bus plate, and a second via hole corresponding to the first via hole is opened on the insulating plate; A via hole and the second via hole are round holes, the diameter of the first via hole is larger than the diameter of the second via hole and smaller than the inner diameter of the elastic member body, and the diameter of the second via hole is the same as The outer diameters of the positive electrode holders are consistent.

In a preferred embodiment, grooves corresponding to the first via hole and the second via hole are opened on the positive electrode bus plate, one end of the positive electrode elastic member is fixed to the groove by welding, and the other One end leans against the positive connecting post.

In a preferred embodiment, the number of protrusions on the positive connecting post of each single battery is two and arranged evenly at an angle of 180 degrees; each positive pole fixing seat corresponds to each protrusion of each single battery One perforation and one card slot are correspondingly arranged; corresponding to each single battery, each positive electrode fixing seat is provided with two perforations and two card slots arranged at an angle of 180 degrees and evenly spaced, and each perforation is connected to an adjacent card slot. The slots are arranged at even intervals at an angle of 90 degrees.

Compared with the prior art, in the new battery module, the positive electrode of the single battery is elastically connected to the positive electrode manifold through the positive elastic member, and the negative electrode of the single battery is elastically connected to the negative electrode manifold through the negative elastic member, which enhances the The buffer capacity of the single battery; the circuit board components are located on the same side of the single battery, realizing the wireless connection of the single battery and taking power from the same side; the connection is simple, the disassembly and assembly are convenient, and it is convenient for assembly and maintenance; the processing technology of the structural components is simple, It is easy to realize modularization and automatic production.

【Description of drawings】

Fig. 1 is an exploded view of the battery module provided by the embodiment of the present invention.

Fig. 2 is a perspective view of the battery assembly of the battery module provided by the embodiment of the present invention.

Fig. 3 is a perspective view of the negative electrode elastic member and the fixing base of the battery module provided by the embodiment of the present invention.

Fig. 4 is a perspective view of the positive electrode fixing seat of the battery module provided by the embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of the battery module provided by the embodiment of the present invention.

【detailed description】

In order to make the purpose, technical solutions and beneficial technical effects of the utility model clearer, the technical solutions in the implementation of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the implementation of the utility model. Obviously, all The described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in FIG. 1 , a battery module 100 provided by the present invention includes a battery assembly 10 , a base assembly 20 and a circuit board assembly 30 .

The battery assembly 10 includes a plurality of single cells 11 and a plurality of positive connecting posts 12 .

Please refer to FIG. 2 and FIG. 5 at the same time. Each single battery 11 is cylindrical and includes a protruding positive terminal 111 and a casing 112 . The positive end 111 is cylindrical, the positive end 111 is the positive pole of the single battery 11 , and the casing 112 is the negative pole of the single battery 11 .

Each positive connecting column 12 is cylindrical. The diameter of the positive connecting post 12 is smaller than the diameter of the positive terminal 111 . A plurality of protrusions 121 are formed on each positive connecting post 12 , and the plurality of protrusions 121 are symmetrical about the central axis of each positive connecting post 12 . In this embodiment, each positive connecting post 12 is fixed on the positive end 111 of a corresponding single battery 11 by welding and is electrically connected with the positive end 111, that is, the positive connecting post 12 also serves as a single battery. 11 positive pole.

The base assembly 20 includes a plurality of negative elastic components 21 , a fixing base 22 , a plurality of positive fixing bases 23 and a plurality of positive elastic components 24 .

As shown in FIG. 3 , each negative elastic member 21 includes an elastic member body 211 and a plurality of elastic pieces 212 extending from the edge of the elastic member body 211 to one side. The elastic body 211 is in the shape of a ring, and the elastic pieces 212 are rectangular and disposed on the elastic body 211 at intervals. The elastic piece 212 is concave toward the central axis of the elastic piece body 211 . Specifically, the elastic member body 211 and the elastic sheet 212 are integrally formed.

The fixing base 22 is made of insulating material and has a plurality of through holes 221 . The inner wall of each through hole 221 is defined with a plurality of receiving grooves 222 corresponding to the elastic pieces 212 of one negative electrode elastic member 21 . The receiving groove 222 is rectangular, the width of the receiving groove 222 is consistent with the width of the elastic piece 212 , and the length of the receiving groove 222 is greater than the length of the elastic piece 212 . The through hole 221 is a circular hole, and the inner diameter of the through hole 221 is consistent with the diameter of the single battery 11 and the outer diameter of the elastic member body 211 . Each negative elastic member 21 is accommodated in a corresponding through hole 221 , wherein each elastic piece 212 abuts against each receiving groove 222 .

As shown in Fig. 4 and Fig. 5, each positive electrode holder 23 is made of insulating material and includes an upper surface 231 and a lower surface 232 opposite to the upper surface 231, and each positive electrode holder 23 starts from the upper surface The first through hole 233 and the second through hole 234 passing through the upper surface 231 and the lower surface 232 are sequentially opened on the 231 . Both the first through hole 233 and the second through hole 234 are circular holes. The diameter of the second through hole 234 is greater than the diameter of the first through hole 233 , and the diameter of the first through hole 233 is consistent with the diameter of the positive connecting post 12 . A junction of the first through hole 233 and the second through hole 234 forms a connecting surface 235 . Each positive electrode fixing base 23 is provided with a plurality of perforations 236 that pass through the upper surface 231 and the connecting surface 235 and communicate with the first through hole 233 , and each perforation 236 is connected to the protrusion 121 corresponding to a single battery 11 one by one. correspond. A plurality of engaging grooves 237 corresponding to the protrusions 121 and communicating with the first through hole 233 are defined on the connecting surface 235 of each positive pole fixing seat 23 .

In this embodiment, the number of protrusions 121 on the positive connection post 12 of each single battery 11 is two and arranged at an even interval of 180 degrees; Each protrusion 121 is correspondingly provided with a perforation 236 and a card slot 237; therefore, corresponding to each single battery 11, each positive electrode holder 23 is provided with two perforations 236 and two card slots evenly spaced at an angle of 180 degrees. For the slots 237 , each through hole 236 is evenly spaced at an angle of 90 degrees to an adjacent locking slot 237 .

The circuit board assembly 30 includes a negative manifold 31 , a positive manifold 32 opposite to the negative manifold 31 , and an insulating plate 33 disposed between the negative manifold 31 and the positive manifold 32 .

Please refer to FIG. 1 again, the negative bus plate 31 is opened with a first via hole 311 corresponding to the through hole 221 and passing through the negative bus plate 31, and the insulating plate 33 is opened with a hole corresponding to the first through hole 311. The second via hole 331 of the via hole 311 and passes through the insulating board 33 . The first via hole 311 and the second via hole 331 are round holes, and the diameter of the first via hole 311 is larger than the diameter of the second via hole 331 and smaller than the inner diameter of the elastic member body 211 . The diameter of the second via hole 331 is consistent with the outer diameter of the positive electrode holder 23 . A groove 321 corresponding to the first via hole 311 and the second via hole 331 is defined on the positive electrode bus plate 32 . In this embodiment, one end of the positive elastic member 24 is fixed to the groove 321 by welding, and the other end leans against the positive connecting post 12 , and the positive elastic member 24 is a spring. Each positive electrode fixing seat 23 is fixed on the positive electrode bus plate 32 and a corresponding positive electrode elastic member 24 is accommodated in the positive electrode fixing seat 23 .

As shown in Fig. 1, Fig. 3 and Fig. 5, during assembly, firstly, the negative electrode bus plate 31, the insulating plate 33 and the positive electrode bus plate 32 are sequentially stacked together, and the first via hole 311, The second via hole 331 corresponds to the groove 321 one by one; then one end of the positive electrode elastic member 24 is sequentially passed through the first via hole 311 and the second via hole 331 and welded to the positive electrode confluence The groove 321 of the plate 32, the positive electrode elastic member 24 is electrically connected to the positive electrode bus plate 32, and then the positive electrode fixing seat 23 is fixed on the positive electrode bus plate 32 and the positive electrode elastic member 24 is accommodated Then put the negative elastic member 21 into the through hole 221 of the fixed base 22, the elastic piece 212 is against the receiving groove 222, and then fix the fixed base 22 on the On the negative bus plate 31 and around the first via hole 311, the elastic body 211 of each negative elastic component 21 is located around the corresponding first via hole and is welded and electrically connected to the negative bus plate 31; finally Fix the positive connecting post 12 on the positive end 111 of the single battery 11, insert the positive connecting post 12 of the single battery 11 into the through hole 221 of the fixing base 22, the single battery The shell 112 of 11 is clamped on the elastic piece 212 and electrically connected, and the positive connecting column 12 passes through the first through hole 233 and abuts against the end of the positive elastic member 24 away from the groove 321 , The protrusion 121 passes through the through hole 236, rotates the unit battery 11 to a position corresponding to the protrusion 121 to the slot 237, releases the unit battery 11, and the protrusion 121 and The engaging slot 237 is engaged by the force of the positive elastic member 24 .

The positive terminal 111 of the single battery 11 is electrically connected to the positive bus plate 32 through the positive connecting column 12 and the positive elastic member 24; the shell 112 of the single battery 11 is connected through the negative elastic member 21 is electrically connected to the negative bus plate 31 .

In other embodiments, the number of the protrusions 121 may be three or more, and each protrusion 121 is provided with a through hole 236 and a slot 237 .

Compared with the prior art, in the new battery module, the positive electrode of the single battery is elastically connected to the positive electrode manifold through the positive elastic member, and the negative electrode of the single battery is elastically connected to the negative electrode manifold through the negative elastic member, which enhances the The buffer capacity of the single battery; the circuit board components are located on the same side of the single battery, realizing the wireless connection of the single battery and taking power from the same side; the connection is simple, the disassembly and assembly are convenient, and it is convenient for assembly and maintenance; the processing technology of the structural components is simple, It is easy to realize modularization and automatic 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 (8)

1. A battery module, characterized in that: it includes a battery assembly, a base assembly and a circuit board assembly; the battery assembly includes a plurality of single cells and a plurality of positive connecting posts, and each single cell includes a positive terminal and a The housing, each positive connecting post is formed with a plurality of protrusions, and each positive connecting post is fixed to the positive end of a corresponding single battery; the base assembly includes a plurality of negative elastic parts, a fixed base, a plurality of positive electrodes A fixed seat and a plurality of positive elastic parts, the fixed base is provided with a plurality of through holes, each negative elastic part is accommodated in a corresponding through hole, and each positive fixed seat is provided with a plurality of protrusions corresponding to the The card slot; the circuit board assembly includes a negative manifold, a positive manifold opposite to the negative manifold, and an insulating plate arranged between the negative manifold and the positive manifold; one end of each positive elastic member pass through the negative bus plate and the insulating plate and fix on the positive bus plate, each positive pole fixing seat is fixed on the positive pole bus plate and accommodate a corresponding positive pole elastic member in the positive pole fixing seat, the The negative elastic member and the fixed base are fixed on the negative manifold, the negative elastic member is electrically connected to the negative manifold, and the positive connecting column of the single battery is inserted into the penetrating hole of the fixed base. hole, the shell of the single battery is clamped on the negative elastic member and electrically connected, the positive connecting column passes through the positive fixing seat and abuts against the end of the positive elastic member away from the positive bus plate and electrically connected, the protrusion engages with the slot. 2. The battery module according to claim 1, wherein each positive electrode holder includes an upper surface and a lower surface opposite to the upper surface; The first through hole and the second through hole run through the upper surface and the lower surface, and the intersection of the first through hole and the second through hole forms a connecting surface; A plurality of perforations connected to the first through hole on the upper surface and the connection surface, each perforation corresponds to a protrusion corresponding to a single battery; a plurality of holes are also opened on the connection surface of each positive electrode holder The locking slot corresponds to the protrusion and communicates with the first through hole. 3. The battery module according to claim 2, characterized in that: each positive connection column is cylindrical; the first through hole and the second through hole are round holes, and the second through hole The diameter of the first through hole is larger than the diameter of the first through hole, and the diameter of the first through hole is consistent with the diameter of the positive connecting post. 4. The battery module according to claim 1, wherein each negative elastic member comprises an elastic member body and a plurality of elastic pieces extending from the edge of the elastic member body to one side; the elastic member body is The ring shape is welded to the negative collector plate, the elastic pieces are rectangular and arranged at intervals on the elastic piece body, and the elastic pieces are concave toward the central axis of the elastic piece body. 5. The battery module as claimed in claim 4, characterized in that: the inner wall of each through hole is provided with a plurality of storage slots corresponding to the elastic pieces of a negative elastic member; the storage slots are rectangular, and the storage slots The width is consistent with the width of the elastic sheet, the length of the storage groove is greater than the length of the elastic sheet, and each elastic sheet is against a corresponding storage groove; the through hole is a round hole, and the through hole The inner diameter is consistent with the diameter of the single battery and the outer diameter of the elastic body. 6. The battery module according to claim 4, wherein a first via hole corresponding to the through hole is opened on the negative electrode bus plate, and a first via hole corresponding to the first via hole is opened on the insulating plate. The second via hole of the hole; the first via hole and the second via hole are circular holes, and the diameter of the first via hole is larger than the diameter of the second via hole and smaller than the inner diameter of the elastic member body , the diameter of the second via hole is consistent with the outer diameter of the positive electrode holder. 7. The battery module according to claim 6, wherein grooves corresponding to the first via hole and the second via hole are opened on the positive electrode bus plate, and one end of the positive electrode elastic member It is fixed to the groove by welding, and the other end leans against the positive connecting post. 8. The battery module as claimed in claim 2, characterized in that: the number of protrusions on the positive connecting post of each single battery is two and are evenly spaced at an angle of 180 degrees; Each protrusion of each single battery is correspondingly provided with a perforation and a card slot; corresponding to each single battery, each positive electrode fixing seat is provided with two perforations and two card slots evenly spaced at an angle of 180 degrees Each perforation is evenly spaced at an angle of 90 degrees to an adjacent card slot.