CN214753970U

CN214753970U - Compatible lithium cell PACK structure

Info

Publication number: CN214753970U
Application number: CN202120256670.5U
Authority: CN
Inventors: 王金胜
Original assignee: Shaanxi Changfeng Power Co ltd
Current assignee: Shaanxi Changfeng Power Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-11-16
Anticipated expiration: 2031-01-29

Abstract

The utility model relates to a compatible lithium battery PACK structure, which comprises a module shell and a whole module fixed inside the module shell; the module shell comprises an upper cover and a lower cover, the whole module comprises a double-layer battery module, a power socket and an output wiring harness, all materials used by the whole battery pack in the utility model are V0-grade flame retardant, and the flame retardance is good; the six surfaces of the battery pack are provided with limiting columns or buffering foam cotton, so that the shock absorption effect is achieved to a certain extent; the middle of the battery cell is uniformly distributed and integrally radiated by air, so that the heat conduction and radiation performance of the whole battery cell after encapsulation are not worried about; sealing structural adhesive is filled at the mounting opening to form a closed whole, so that the waterproof performance of the whole is ensured; the PC sheets are adhered to the contact surfaces, all electric devices are independently protected and insulated, the performance of the battery is improved, and the problems of incompatibility of the battery and electric performance failure are fundamentally solved.

Description

Compatible lithium cell PACK structure

Technical Field

The utility model relates to a lithium cell technical field especially relates to a compatible lithium cell PACK structure.

Background

The lithium battery is an energy storage conversion device which is more and more widely applied, and the excellent electrochemical performance of the lithium battery realizes a market application scene of small-medium-large size which is advanced all the time. Small, usually electronic, aspects such as smart phones, laptops; the medium-sized vehicle is mainly applied to new energy vehicles and is called a power battery; large applications are referred to above base stations as energy storage batteries.

The lithium battery is a new energy product, and has high voltage, large specific energy, long cycle life, good safety, small self-discharge and the like; however, the price of the lithium battery is higher and the market share is only 4%. At present, the price of the lithium battery electric bicycle is generally higher than that of a lead-acid battery electric bicycle by hundreds of yuan to one thousand yuan, so that the lithium battery electric bicycle is one of important reasons for small sales volume. The light electric vehicle has the defects of too many structural design defects by using a lithium battery, the working condition environment of the light electric vehicle (especially a shared electric vehicle) is not fully considered, the light electric vehicle has higher voltage due to large capacity, more batteries need to be connected in parallel, and the requirements on shock resistance and protection are higher, but the existing battery pack design on the market adopts a certain number of battery cores to be directly connected in parallel, the structural design is simple bracket connection or bracket direct connection is not used, the shell design adopts plastics but the heat dissipation performance of the shell is not fully considered, the interior of the battery is a simple basic protection function, and the problems that the whole string of battery cores are burnt and ignited due to the impact, the shock and the abnormity of single battery cores in the practical application of the light electric vehicle are lack of consideration and counter measures; and the battery is changed and is taken and all need the professional to come the operation, and PCBA control unit is for decomposing structural design, leads to the higher scheduling problem defect of cost and risk.

The problems that the lithium battery pack structure of the two-wheeled vehicle is incompatible, the battery cell type is incompatible, the battery model is incompatible, and the resonance of a battery pack is easily caused by the vibration of a vehicle body in the running process to influence the performance of the battery in the prior art are solved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a compatible lithium cell PACK structure, solve the incompatible lithium cell PACK structure of two wheeler among the prior art, electric core type is incompatible, the incompatible condition of battery model to and the resonance that arouses the battery package easily at the vibration of driving in-process automobile body produces the influence scheduling problem to the battery performance, solve the problem of the incompatible and electrical property trouble condition of battery fundamentally.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a compatible lithium cell PACK structure, its innovation point lies in: comprises a module shell and a whole module fixed in the module shell;

the module shell comprises an upper cover and a lower cover, wherein a lamp panel is arranged on the side edge of the upper cover, a seam stopping opening is formed in the upper cover, a socket jack is formed in the side edge of the lower cover, a glue applying groove is formed in the edge position of the lower cover, the upper cover and the lower cover are fastened through a check nut after being in butt joint, and sealing is performed by applying sealing structural glue in the glue applying groove;

the lamp panel is connected with the BMS management system, so that the electric quantity state of the battery pack can be visually seen;

the whole module comprises a double-layer battery module, a power socket and an output wire harness;

the power socket is fixed on the socket jack;

the double-layer battery module is formed by locking two battery modules through bolts;

the battery module comprises a plurality of battery cells and a battery cell support, the battery cell support is a wrapping buckle type support, a wiring groove, a nickel strap positioning groove and battery holes are formed in the battery cell support, the battery cells are uniformly distributed in the battery cell support through the battery holes and are fixed, the center distance between every two adjacent battery holes is a fixed value, the nickel strap positioning groove is used for sinking type positioning, the nickel strap is fixed on the nickel strap positioning groove, a plurality of nickel sheets which are connected with the battery cells in a one-to-one correspondence mode are arranged on the nickel strap, a protection plate is fixed on the battery cell support through self-tapping screws at the side edge of the battery module, and a positioning column is further arranged on the side wall of the battery module;

the battery cell can be better protected by wrapping the buckling type support so as to prevent tin bead and tin slag from falling into the module when the sampling line is welded, and the wiring groove is convenient for the sampling line to be positioned;

all the electric cores in the electric core support are connected by utilizing a nickel strap and a sampling wire harness arranged in the wiring groove, the double-layer battery module is fixedly installed inside the lower cover through three-way positions, the double-layer battery module and a stud on the module shell form limiting to avoid shaking, and buffer foam is placed on one side, away from the electric cores, of the protection plate for buffer protection;

the double-layer battery module is connected with the power socket through the output wire harness to form the whole module.

Furthermore, the battery cell supports are 26700 (lithium iron), 18650 (ternary) and 21700 (ternary).

Furthermore, the side of the module shell is provided with a battery replacing jack, so that the module shell is convenient to use in the market.

Furthermore, the socket jacks are two socket jacks commonly used in the market, the socket jacks can be switched to be used at will, and the socket jacks are sealed by injecting sealing structural glue, so that the waterproofness and the sealing performance of the whole lithium battery are guaranteed.

And the PC sheet is single-sided gum, the shape of the PC sheet is consistent with that of the battery cell support, and the PC sheet is fixed on two sides of the battery cell support through positioning column bolts to perform insulation protection on all the battery cells.

Furthermore, the module shell passes through the upper cover and the lower cover through a long bolt to be fixed with a handle, so that the module shell is convenient to take and use.

Further, the whole module and the module shell are made of V0-grade flame retardant materials.

The utility model has the advantages that:

all the materials used by the whole battery pack in the utility model are V0-grade flame retardant, and the flame retardance is good; the six surfaces of the battery pack are provided with the limiting columns or the buffering foam, so that the shock absorption effect is achieved to a certain extent, the problem that the service life of the battery is short under the vibration working condition is effectively avoided, and the problems of open circuit and looseness caused by vibration are solved, so that the service life of the battery pack is prolonged; the middle of the battery cell is uniformly distributed and integrally radiated by air, so that the heat conduction and radiation performance of the whole battery cell after encapsulation are not worried about; sealing structural adhesive is filled at the mounting opening to form a closed whole, so that the waterproof performance and the safety performance of the whole are ensured; the PC pieces are attached to the contact surfaces, all electric devices are independently protected and insulated, the whole battery pack is protected, short circuit, overcharge and overdischarge are avoided, the service life of a lithium battery is shortened, and the problems of battery incompatibility and electrical property fault are fundamentally solved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the utility model discloses a compatible lithium cell PACK structure's front view.

Fig. 2 is the utility model discloses a compatible lithium cell PACK structure's inside structure chart.

Fig. 3 is the utility model discloses a top view of compatible lithium cell PACK structure.

Fig. 4 is the utility model discloses a module shell structure chart of compatible lithium cell PACK structure.

Fig. 5 is the utility model discloses a compatible lithium cell PACK structure's electric core support structure chart.

Fig. 6 is the structure diagram of the nickel strap of the lithium battery PACK structure of the present invention.

Fig. 7 is the utility model discloses a compatible lithium cell PACK structure's PC piece structure chart.

Fig. 8 is the utility model discloses a protection shield structure chart of compatible lithium cell PACK structure.

Detailed Description

A lithium battery PACK compatible structure as shown in fig. 1 to 8 includes a module case and an entire module fixed inside the module case.

The module housing comprises an upper cover 1 and a lower cover 2, and a handle 3 is fixed on the module housing through a long bolt penetrating through the upper cover and the lower cover.

1 side of upper cover is equipped with lamp plate 6, and lamp plate 6 is connected with BMS management system, is equipped with on the upper cover 1 and ends the mouth of meeting.

2 sides of lower cover are equipped with socket jack, and socket jack is two kinds of socket jack commonly used on the market, can switch the random use, and socket jack department notes sealing structure and glues and seal, guarantees the waterproof nature and the leakproofness of whole lithium cell, and the border position department of lower cover has seted up and has beaten gluey groove 14.

The upper cover and the lower cover are butted and then fastened through the locknut, and the glue groove 14 is filled with sealing structural glue for sealing.

The whole module comprises a double-layer battery module, a power socket 4 and an output wire harness 5.

The power socket 4 is fixed on the socket jack.

The double-layer battery module is formed by locking two battery modules through bolts.

The battery module comprises a plurality of battery cells 9 and a battery cell support 11, wherein the battery cell support 11 comprises three types, namely 26700 (lithium iron), 18650 (ternary) and 21700 (ternary).

Electric core support 11 is parcel buckle formula support, be equipped with trough 15 on electric core support 11, nickel strap 10, nickel strap constant head tank and battery hole 16, electric core 9 is through the even range of battery hole 16 in electric core support 11 internal fixation, and the centre-to-centre spacing is the definite value between the adjacent battery hole 16, the nickel strap constant head tank is sunken formula location, nickel strap 10 is fixed on the nickel strap constant head tank, and be provided with a plurality of nickel pieces of being connected with electric core 9 one-to-one on the nickel strap 10, the side of battery module is located and is fixed with protection shield 8 through the self-tapping nail on the electric core support, still be provided with the reference column on the lateral wall of battery module.

Utilize the sampling pencil 13 that sets up in nickel strap 10 and trough 15 to couple together all electric cores 9 in the electric core support, pass through three-dimensional position fixed mounting with the double-deck battery module inside lower cover 2, with double-deck battery module and the spacing production of avoiding of double-deck battery module and module shell on double-screw bolt formation rock, one side that electric core 9 was kept away from to protection shield 8 is placed buffering bubble cotton 7 and is cushioned protection.

The double-layer battery module is connected with a power socket 4 through an output wiring harness 5 to form the whole module.

The side of the module shell is provided with a battery replacing jack, so that the module shell is convenient to use in the market.

The PC sheet 12 is a single-side back adhesive, the shape of the PC sheet is consistent with that of the battery cell support 11, and the PC sheet 12 is fixed on two sides of the battery cell support through positioning column bolts to perform insulation protection on all battery cells.

The whole module and the module shell are made of V0-grade flame retardant material.

The working principle of this patent: electric core 9 arranges electric core support 11 internal fixation in, couples together all electric cores 9 in electric core support 11 through nickel strap 10 and sampling pencil 13, and electric core support 11 is all pasted with insulation protection's PC piece 12 in both sides from top to bottom, carries out insulation protection to all electric cores. The protection plate 8 is connected with the battery and is placed on the side edge of the battery core support 11, so that the whole battery pack is protected, short circuit, overcharge, overdischarge and the like are avoided, and the service life of the lithium battery is shortened.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a compatible lithium cell PACK structure which characterized in that: comprises a module shell and a whole module fixed in the module shell;

the power socket is fixed on the socket jack;

2. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the battery cell supports are three in number, namely 26700 lithium iron, 18650 ternary and 21700 ternary.

3. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the side of the module shell is provided with a battery replacing jack, so that the module shell is convenient to use in the market.

4. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the socket jacks are two socket jacks commonly used in the market, can be switched to be used at will, and are sealed by injecting sealing structural glue.

5. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the battery cell support is characterized by further comprising a PC sheet, wherein the PC sheet is single-sided gum, the shape of the PC sheet is consistent with that of the battery cell support, and the PC sheet is fixed on two sides of the battery cell support through positioning column bolts to perform insulation protection on all battery cells.

6. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the module shell passes through the upper cover and the lower cover through a long bolt to be fixed with a handle.

7. A lithium battery PACK compatible structure as claimed in claim 1, wherein: the whole module and the module shell are made of V0-grade flame retardant material.