CN216957771U

CN216957771U - Square lithium ion capacitor module

Info

Publication number: CN216957771U
Application number: CN202123194401.XU
Authority: CN
Inventors: 范建红; 王海威; 李南洲; 丁军军
Original assignee: Daimeike Power System Technology Wuhan Co ltd
Current assignee: Daimeike Power System Technology Wuhan Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-12
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a square lithium ion capacitor module. The lithium ion capacitor module comprises a cell pack, an FPC sampling plate, a module cover plate, two module end plates and two module side plates; the battery core group is formed by arranging a plurality of battery cell monomers in sequence, and each battery cell monomer comprises a battery cell middle support, a battery cell and a busbar. The battery cell is bonded on the battery cell middle support, so that the stability of the battery cell is enhanced, and the problem of battery cell looseness caused by vehicle-mounted vibration or thermal expansion after charging and discharging is solved; through using FPC sampling board and with FPC sampling board welded fastening on the busbar of electric core, prevent that the lithium ion capacitor module from violently leading to FPC sampling board to destroy because of vibrations, improved the security performance of lithium ion capacitor module. The lithium ion capacitor module not only reduces the height of the lithium ion capacitor module, but also reduces the weight of the lithium ion capacitor module, and is beneficial to improving the production efficiency of the lithium ion capacitor module.

Description

Square lithium ion capacitor module

Technical Field

The utility model relates to the technical field of lithium ion capacitors, in particular to a square lithium ion capacitor module.

Background

The lithium ion capacitor is used as a new clean energy, and has the advantages of high energy density, good safety, long cycle life and the like, so the lithium ion capacitor is widely applied to an auxiliary power system in a new energy automobile.

The existing square lithium ion capacitor module is generally assembled into a group by using end plates, side plates, a middle support and a capacitor, then is connected by screws, and finally is assembled by fixing screws and a bus bar, so that the problems that the screws of the capacitor are loosened due to vehicle-mounted vibration and the screws of the end plates and the side plates are torn and loosened due to thermal expansion of the capacitor after charging and discharging can not be solved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a square lithium ion capacitor module, which overcomes the above-mentioned shortcomings of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the square lithium ion capacitor module comprises a cell pack, an FPC (flexible printed circuit) sampling plate, a module cover plate, two module end plates and two module side plates; the battery core group is formed by sequentially arranging a plurality of battery cell monomers, each battery cell monomer comprises a battery cell middle bracket, a battery cell and a busbar, and the busbar is arranged at the top of the battery cell; the battery cell is bonded on the battery cell middle bracket; the FPC sampling plate and the module cover plate are sequentially arranged at the top of the battery core group, sampling joints are respectively arranged at two ends of the FPC sampling plate, the FPC sampling plate is welded on the busbar, and the busbar is welded on the battery core; the two ends of the electric core group are respectively provided with a positive electrode connector and a negative electrode connector; the two module end plates are respectively arranged at two ends of the electric core group through electric core end face supports; the two module curb plates set up respectively the both sides of electric core group, adjacent the module end plate with module curb plate welded fastening.

Furthermore, a first glue injection groove is formed in the middle support of the battery cell.

Furthermore, the FPC sampling board is bolted and fixed with the battery cell middle support through the FPC locating pin.

Furthermore, be provided with sampling portion on the FPC sampling board, the quantity of sampling portion with electric core one-to-one, sampling portion is the metal nickel piece.

Furthermore, the cell end face support is glued at two ends of the cell group, and the module end plate is glued on the cell end face support.

Furthermore, both sides of the battery cell end face support are provided with second glue injection grooves.

Furthermore, the two ends of the FPC sampling board are connected and fixed through the electric core end face support through bolts.

Furthermore, the module end plate and the module side plate are aluminum alloy plates.

Further, the thickness of the busbar is 1.0 mm.

Further, the two ends of the module end plate are provided with mounting holes.

The technical scheme provided by the utility model has the beneficial effects that:

the utility model provides a square lithium ion capacitor module, which comprises an electric core group, an FPC (flexible printed circuit) sampling plate, a module cover plate, two module end plates and two module side plates, wherein the electric core group is arranged on the electric core group; the battery core group is formed by sequentially arranging a plurality of battery core monomers, each battery core monomer comprises a battery core middle support and a battery core, and the battery core is fixed with the battery core middle support through the glue injection groove by arranging the glue injection groove on the battery core middle support, so that the stability of the battery core is enhanced, and the problem of battery core looseness caused by vehicle-mounted vibration or thermal expansion after charging and discharging is solved; through using FPC sampling board and with FPC sampling board welded fastening on the busbar of electric core, prevent that the lithium ion capacitor module from violently leading to FPC sampling board to destroy because of vibrations, improved the security performance of lithium ion capacitor module. The lithium ion capacitor module disclosed by the utility model not only reduces the height of the lithium ion capacitor module, but also reduces the weight of the lithium ion capacitor module, and is beneficial to improving the production efficiency of the lithium ion capacitor module.

Drawings

FIG. 1 is a schematic view of a mold component of a square lithium ion capacitor according to the present invention;

fig. 2 is an appearance schematic diagram of a lithium ion capacitor module according to the present invention.

1. The electric core group; 11. a battery cell monomer; 12. a battery cell middle bracket; 121. a first glue injection groove; 122. positioning pins; 13. an electric core; 14. a battery cell end face support; 141. a second glue injection groove; 2. an FPC sampling board; 21. a sampling section; 3. a module cover plate; 4. a module end plate; 41. mounting holes; 5. a module side plate; 6. a bus bar.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, the square lithium ion capacitor module provided by the present invention includes a cell assembly 1, an FPC sampling board 2, a module cover plate 3, two module end plates 4, and two module side plates 5; the battery core group 1 is formed by sequentially arranging a plurality of battery cell monomers 11, each battery cell monomer 11 comprises a battery cell middle bracket 12, a battery cell 13 and a busbar 6, and the busbar 6 is arranged at the top of the battery cell 13; the battery cell 13 is bonded on the battery cell middle bracket 12; the FPC sampling plate 2 and the module cover plate 3 are sequentially arranged at the top of the cell group 1, sampling joints are respectively arranged at two ends of the FPC sampling plate 2, the FPC sampling plate 2 is welded on the busbar 6, and the busbar 6 is welded on the cell 13; the two ends of the electric core group 1 are respectively provided with a positive electrode connector and a negative electrode connector; the two module end plates 4 are respectively arranged at two ends of the cell group 1 through the cell end surface brackets 14; two module curb plates 5 set up respectively in the both sides of electric core group 1, and adjacent module end plate 4 and module curb plate 5 welded fastening. The battery cell 13 is bonded on the battery cell middle support 12, so that the stability of the battery cell is enhanced, and the problem of battery cell looseness caused by vehicle-mounted vibration or thermal expansion after charging and discharging is solved; by using the FPC sampling board 2 and welding and fixing the FPC sampling board 2 on the bus bar 6 of the battery cell 13, the damage of the FPC sampling board caused by severe vibration of the lithium ion capacitor module is prevented, and the safety performance of the lithium ion capacitor module is improved; through passing through welded fastening with adjacent module end plate 4 and module curb plate 5, improved lithium ion capacitor module structural strength, strengthened lithium ion capacitor module stability. The lithium ion capacitor module not only reduces the height of the lithium ion capacitor module, but also reduces the weight of the lithium ion capacitor module, and is beneficial to improving the production efficiency of the lithium ion capacitor module.

In order to improve the assembly efficiency of the lithium ion capacitor module, the first glue injection groove 121 can be formed in the battery cell middle support 12 of the embodiment, which is beneficial to the standardization operation of workers.

In order to effectively monitor the voltage and temperature of the battery cell, the FPC sampling board 2 of this embodiment may be bolted and fixed with the battery cell middle support 12 through the FPC positioning pin 122 for acquiring the voltage and temperature signals of the lithium ion capacitor, and the FPC positioning pin 122 is designed on the battery cell middle support 12, so as to facilitate the installation and fixation of the FPC sampling board 2.

In order to guarantee that the sampling of electric core voltage and temperature is timely and accurate, be provided with sampling portion 21 on the FPC sampling board 2 of this embodiment, the quantity and the electric core 13 one-to-one of sampling portion 21, FPC sampling board 2 welds on busbar 6, and sampling portion 21 is the metal nickel piece.

In order to alleviate the weight of lithium ion capacitor module, the electricity core terminal surface support 14 of this embodiment splices at the both ends of electric core group 1, and module end plate 4 splices on electricity core terminal surface support 14, and the both sides of electricity core terminal surface support 14 all are provided with second glue injection groove 141, effectively prevent that electric core 13 from becoming flexible, have improved the security performance of lithium ion capacitor module.

In order to be beneficial to the fixing of FPC sampling board 2 on electric core 13, the both ends of FPC sampling board 2 of this example can be connected fixedly through bolt and electric core terminal surface support 14, have made things convenient for the accurate FPC sampling board 2 of fixing of staff.

In order to better perform the welding process, both the module end plates 4 and the module side plates 5 of the present embodiment may be aluminum alloy plates.

In order to increase the bus bar width and maintain a stable overcurrent capability, the thickness of the bus bar 6 of the present embodiment is 1.0mm, and the bus bar 6 is a copper-plated nickel plate.

In order to fix the lithium ion capacitor module and the box body conveniently, the two ends of the module end plate 4 of the embodiment are provided with mounting holes 41, and the worker can pass through the mounting holes 41 through bolts to fix the lithium ion capacitor module and the box body.

The method is applicable to the prior art.

While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the utility model, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the utility model as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention shall be included in the scope of the present invention.

Claims

1. The utility model provides a square lithium ion capacitor module which characterized in that: the square lithium ion capacitor module comprises an electric core group (1), an FPC sampling plate (2), a module cover plate (3), two module end plates (4) and two module side plates (5); the battery core group (1) is formed by sequentially arranging a plurality of battery core monomers (11), each battery core monomer (11) comprises a battery core middle bracket (12), a battery core (13) and a bus bar (6), and the bus bar (6) is arranged at the top of the battery core (13); the battery cell (13) is bonded on the battery cell middle bracket (12); the FPC sampling board (2) and the module cover plate (3) are sequentially arranged at the top of the battery cell group (1), sampling joints are respectively arranged at two ends of the FPC sampling board (2), the FPC sampling board (2) is welded on the busbar (6), and the busbar (6) is welded on the battery cell (13); the two ends of the electric core group (1) are respectively provided with a positive electrode connector and a negative electrode connector; the two module end plates (4) are respectively arranged at two ends of the electric core group (1) through electric core end face brackets (14); two module curb plate (5) set up respectively the both sides of electric core group (1), adjacent module end plate (4) with module curb plate (5) welded fastening.

2. The lithium ion prismatic capacitor module of claim 1, wherein: and a first glue injection groove (121) is formed in the battery cell middle support (12).

3. The lithium ion prismatic capacitor module according to claim 1, wherein: the FPC sampling board (2) is bolted and fixed with the battery cell middle support (12) through an FPC positioning pin (122).

4. The lithium ion prismatic capacitor module according to claim 3, wherein: the FPC sampling board (2) is provided with sampling parts (21), the number of the sampling parts (21) corresponds to the number of the battery cells (13) one by one, and the sampling parts (21) are metal nickel sheets.

5. The lithium ion prismatic capacitor module according to claim 1, wherein: electric core terminal surface support (14) splice and are in the both ends of electric core group (1), module end plate (4) splice and are in on electric core terminal surface support (14).

6. The lithium ion prismatic capacitor module according to claim 5, wherein: and second glue injection grooves (141) are formed in two sides of the battery cell end face support (14).

7. The lithium ion prismatic capacitor module according to claim 6, wherein: and the two ends of the FPC sampling plate (2) are fixedly connected with the battery cell end face support (14) through bolts.

8. The lithium ion prismatic capacitor module according to claim 1, wherein: the module end plate (4) and the module side plate (5) are both aluminum alloy plates.

9. The lithium ion prismatic capacitor module according to claim 1, wherein: the thickness of the bus bar (6) is 1.0 mm.

10. The lithium ion prismatic capacitor module of claim 1, wherein: and mounting holes (41) are formed in two ends of the module end plate (4).