CN217216025U

CN217216025U - Equalizing charge device for series lithium battery pack

Info

Publication number: CN217216025U
Application number: CN202220197289.0U
Authority: CN
Inventors: 唐罗伟; 刘好玉; 曹德定
Original assignee: Shenzhen Grenergy Technology Co ltd
Current assignee: Shenzhen Grenergy Technology Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-08-16
Anticipated expiration: 2032-01-24

Abstract

The utility model relates to a lithium cell technical field, concretely relates to series lithium cell group equalizing charge device, including the battery box, the middle part of battery box is provided with the guard box, the lithium cell is evenly installed at the middle part of guard box, be provided with protector between battery box and the guard box, the middle part of battery box is provided with equalizing charge device, the beneficial effects of the utility model are that: be provided with clamping device at the middle part of battery box, at the removal of lithium cell and the in-process of work, can press from both sides tight fixed to the battery, prevent that the lithium cell from appearing the phenomenon of electric leakage and outage because of rocking, play the effect of protection, and in the use of lithium cell, the current conducting plate can make all batteries establish ties together and use, when needs charge, the current conducting plate leaves the lithium cell, all lithium cells are independent battery, the convenience charges to every battery, thereby reach the effect of equalizing charge.

Description

Equalizing charging device for series lithium battery pack

Technical Field

The utility model relates to a lithium cell technical field, concretely relates to series lithium cell group equalizing charge device.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, the lithium battery pack belongs to a multi-series-parallel lithium battery pack, and the lithium battery has the advantages of large specific energy, small volume, no pollution and the like, and is widely applied to a plurality of important industries such as electric automobiles, mobile equipment, emergency power supplies and the like. Due to the voltage and capacity limitations of single lithium batteries, in practical use, a battery pack is usually formed by connecting a plurality of single lithium batteries in series. Due to differences in performance between the individual cells that make up the battery pack, the performance of the individual cells can affect the performance of the overall lithium ion battery pack. Due to the reduction of the capacity of the individual single battery, the capacity of the battery pack is reduced, and the service life and the service capacity of the battery pack are reduced.

In order to reduce the unbalance between the battery cell, need carry out equalizing charge to the group battery in charging process, present lithium cell group places a plurality of lithium battery monomer inside the protective plate, be convenient for put a plurality of lithium battery monomer integratedly together, and play the guard action to lithium battery monomer, uneven phenomenon of discharging can appear when charging in present lithium cell group battery charging outfit, thereby the condition that electric quantity is uneven appears in the monomer electricity core that leads to the lithium cell group easily, and the lithium cell can appear slightly rocking with the work in carrying, rock and can make inside battery rock thereby make the battery contact bad, influence the use.

Therefore, it is necessary to design an equalizing charge device for series lithium battery pack.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a series lithium cell group equalizing charge device, through protector and equalizing charge device, in order to reduce the unbalance between the battery cell at present, need carry out equalizing charge to the group battery in charging process, present lithium cell group places a plurality of lithium cell monomer inside the protection plate, be convenient for integrate a plurality of lithium cell monomer together, and play the guard action to the lithium cell monomer, uneven phenomenon of discharging can appear when charging in present lithium cell group battery charging outfit, thereby lead to the interior monomer electricity core of lithium cell group to appear the uneven condition of electric quantity easily, and the lithium cell can appear slightly rocking with the during operation carrying, rock and can make inside battery rock thereby make the battery contact bad, influence the use scheduling problem.

In order to achieve the above object, the present invention provides the following technical solutions: the equalizing charge device for the series lithium battery pack comprises a battery box, wherein a protective box is arranged in the middle of the battery box, lithium batteries are uniformly arranged in the middle of the protective box, a protective device is arranged between the battery box and the protective box, and the equalizing charge device is arranged in the middle of the battery box;

the equalizing charging device comprises a charging assembly and a power-off assembly, wherein the power-off assembly is arranged above the charging assembly.

Preferably, the protection device comprises a sliding barrel, the sliding barrel is uniformly and fixedly connected to the middle of the inner wall of the battery box, one end of the sliding barrel is connected with a sliding column in a sliding mode, one end of the sliding column is fixedly connected with a clamping plate, and a damping spring is arranged on the side wall of the sliding column.

Preferably, the damping spring is arranged between the battery box and the clamping plate, the corrugated pipe is fixedly connected between the clamping plate and the battery box, the sliding column and the damping spring are arranged below the corrugated pipe, and the clamping plate is arranged on the side wall of the protective box.

Preferably, the charging assembly comprises a charging head, the charging head is fixedly connected to the side wall of the battery box, one end of the charging head is electrically connected with a connecting wire, and one end of the connecting wire is electrically connected to the upper end of the lithium battery.

Preferably, the outage subassembly includes the current conducting plate, the current conducting plate sets up the top at the lithium cell, the upper end fixedly connected with insulation board of current conducting plate, the even fixedly connected with coupling spring in upper end of insulation board, coupling spring's one end fixed connection is in the inner wall upper end of battery box.

Preferably, the positive terminal of one side fixedly connected with of current conducting plate, positive terminal runs through sliding connection in the upper end of battery box, the opposite side fixedly connected with negative terminal of current conducting plate, negative terminal runs through sliding connection in the upper end of battery box, the lateral wall through rotation of battery box is connected with the pivot.

Preferably, the one end fixedly connected with of pivot rotates the handle, it sets up the outside at the battery box to rotate the handle, the one end fixedly connected with connecting plate of pivot, the lateral wall fixedly connected with of connecting plate promotes the piece.

Preferably, promote the piece setting in the upper end of insulation board, the inner wall upper end fixedly connected with fixed plate of battery box, the quantity of fixed plate is two, the pivot runs through to rotate and connects on the lateral wall of two fixed plates, the upper end fixedly connected with fiber grating sensor of insulation board, the one end setting of fiber grating sensor is in the top of lithium cell, the display screen is installed to the upper end of battery box, the display screen is in the same place with fiber grating sensor electric connection.

The utility model has the advantages that: be provided with clamping device at the middle part of battery box, at the removal of lithium cell and the in-process of work, can press from both sides tight fixed to the battery, prevent that the lithium cell from appearing the phenomenon of electric leakage and outage because of rocking, play the effect of protection, and in the use of lithium cell, the current conducting plate can make all batteries establish ties together and use, when needs charge, the current conducting plate leaves the lithium cell, all lithium cells are independent battery, the convenience charges to every battery, thereby reach the effect of equalizing charge, overall structure is simple, and convenient operation.

Drawings

Fig. 1 is a cross-sectional view of an equalizing charge device for series lithium battery packs according to the present invention;

fig. 2 is an enlarged view of the structure of the area a in fig. 1 according to the present invention;

fig. 3 is an enlarged view of the structure of the region B in fig. 1 according to the present invention;

fig. 4 is a three-dimensional schematic view of a pushing block of the equalizing charging device for series lithium battery packs provided by the present invention;

in the figure: 1. a connecting wire; 2. a charging head; 3. a bellows; 4. an insulating plate; 5. a battery box; 6. a damping spring; 7. a lithium battery; 8. a protective box; 9. a clamping plate; 10. a slide cylinder; 11. a rotating shaft; 12. rotating the handle; 13. a negative terminal; 14. a fixing plate; 15. a conductive plate; 16. a positive terminal post; 17. a connecting spring; 18. a connecting plate; 19. a traveler; 20. a pushing block; 21. a display screen; 22. a fiber grating sensor.

Detailed Description

The preferred embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.

Referring to the attached drawings 1-4, the utility model provides a series lithium battery pack equalizing charge device, including battery box 5, battery box 5 can play the effect of protection, be made by the metal, battery box 5's middle part is provided with guard box 8, guard box 8 can play the effect of protection, be made by the metal, guard box 8's middle part is evenly installed and is equipped with lithium cell 7, lithium cell 7 is the current patent technology product that discloses, be provided with protector between battery box 5 and guard box 8, battery box 5's middle part is provided with equalizing charge device, equalizing charge device includes charging assembly and outage subassembly, the outage subassembly sets up the top of charging assembly, protector includes slide cartridge 10, slide cartridge 10 makes things convenient for the upper and lower slip of slide cartridge 19, be made by the metal, slide cartridge 10 evenly fixed connection is in the middle part of the inner wall of battery box 5, slide cartridge 19 is connected to one end sliding connection of slide cartridge 10, the sliding column 19 has the functions of sliding and connecting and is made of metal, one end of the sliding column 19 is fixedly connected with a clamping plate 9, the clamping plate 9 has the functions of clamping and fixing and is made of metal, the side wall of the sliding column 19 is provided with a damping spring 6, the damping spring 6 can tightly clamp the clamping plate 9 on the side wall of the protective box 8 through elasticity to prevent the lithium battery 7 from shaking, the damping spring 6 is arranged between the battery box 5 and the clamping plate 9, a corrugated pipe 3 is fixedly connected between the clamping plate 9 and the battery box 5, the corrugated pipe 3 can play the functions of protection and shielding and is made of rubber, the sliding column 19 and the damping spring 6 are arranged below the corrugated pipe 3, the clamping plate 9 is arranged on the side wall of the protective box 8, the charging assembly comprises a charging head 2, the charging head 2 is convenient to charge, and for the existing patent and technical product, the charging head 2 is fixedly connected on the side wall of the battery box 5, one end of the charging head 2 is electrically connected with a connecting wire 1, the connecting wire 1 can be conveniently electrified, for the existing patent technology product, one end of the connecting wire 1 is electrically connected with the upper end of the lithium battery 7, the power-off assembly comprises a current-conducting plate 15, the current-conducting plate 15 facilitates the transmission and the flow of current, for the existing patent technology product, the current-conducting plate 15 is arranged above the lithium battery 7, the upper end of the current-conducting plate 15 is fixedly connected with an insulating plate 4, the insulating plate 4 can play the role of insulating current and is made of rubber, the upper end of the insulating plate 4 is uniformly and fixedly connected with a connecting spring 17, the connecting spring 17 can upwards pull the current-conducting plate 15 through the elastic force, for the existing patent technology product, one end of the connecting spring 17 is fixedly connected with the upper end of the inner wall of the battery box 5, one side of the current-conducting plate 15 is fixedly connected with a positive terminal 16, the positive terminal 16 facilitates the use of the lithium battery 7, for the prior patent publication technical product, a positive terminal 16 is connected to the upper end of a battery box 5 in a penetrating and sliding manner, the other side of a current conducting plate 15 is fixedly connected with a negative terminal 13, the negative terminal 13 facilitates the use of a lithium battery 7, for the prior patent publication technical product, the negative terminal 13 is connected to the upper end of the battery box 5 in a penetrating and sliding manner, the side wall of the battery box 5 is connected with a rotating shaft 11 in a penetrating and rotating manner, the rotating shaft 11 can play a role in rotating and connecting and is made of metal, one end of the rotating shaft 11 is fixedly connected with a rotating handle 12, the rotating handle 12 is arranged at the outer side of the battery box 5, one end of the rotating shaft 11 is fixedly connected with a connecting plate 18, the connecting plate 18 has a connecting and fixing role and is made of metal, the side wall of the connecting plate 18 is fixedly connected with a pushing block 20, the pushing block 20 is convenient for pushing the current conducting plate 15 downwards in the rotating process and is made of metal, the pushing block 20 is arranged at the upper end of the insulating plate 4, the fixing plate 14 is fixedly connected to the upper end of the inner wall of the battery box 5, the fixing plate 14 has the connecting and fixing functions and is made of metal, the number of the fixing plates 14 is two, the rotating shaft 11 is connected to the side walls of the two fixing plates 14 in a penetrating and rotating mode, the fiber bragg grating sensor 22 is fixedly connected to the upper end of the insulating plate 4, the fiber bragg grating sensor belongs to one type of fiber optic sensor, sensing information is obtained by modulating the fiber bragg wavelength through external physical parameters in the sensing process based on the fiber bragg grating, the fiber bragg grating sensor is a wavelength modulation type fiber optic sensor, the temperature and the strain force of the lithium battery 7 can be measured, for the existing patent technology product, one end of the fiber bragg grating sensor 22 is arranged above the lithium battery 7, the display screen 21 is arranged at the upper end of the battery box 5, and the temperature and the strain force of the lithium battery 7 can be displayed on the display screen 21, for the prior patent technology product, the display screen 21 is electrically connected with the fiber grating sensor 22;

the utility model discloses a use as follows: when the technical personnel in the field need to charge the lithium battery 7, the rotating handle 12 is used for rotating, the pushing block 20 leaves the upper part of the current-conducting plate 15 through the rotating action, the back current-conducting plate 15 is pulled upwards due to the elastic force of the connecting spring 17, then a distance between the positive wiring column 16 and the negative wiring column 13 which slide upwards can be obviously seen, all the current-conducting plates 15 leave the upper part of the lithium battery 7, then the current-conducting plate is inserted into the charging head 2 through the charger for charging, the current sequentially enters each independent lithium battery 7 through the connecting wire 1 for balanced charging, after the charging is finished, the rotating handle 12 is used again for rotating, the pushing block 20 downwards supports against the upper part of the current-conducting plate 15 due to the rotating action to extrude the current-conducting plate downwards, the positive wiring column 16 and the negative wiring column 13 can be obviously seen to slide downwards, the current-conducting plate 15 is contacted with the upper part of the lithium battery 7, simultaneously fiber grating sensor 22's one end also can follow downward contact lithium cell 7, detect the temperature and the dependent stress of battery, then can show on display screen 21, make all lithium cells 7 establish ties and use, then an end at positive terminal 16 and negative terminal 13 connects the electric wire, alright use, convenient and fast, in the in-process of lithium cell 7 use and transport, lithium cell 7 can appear slightly rocking, and extrude traveller 19 through clamp plate 9 and slide in the one end of slide cartridge 10, then damping spring 6 can play the effect of shock attenuation and buffering, thereby reduce rocking of lithium cell 7, increase lithium cell 7's life, press from both sides tight fixed to protective housing 8.

The above are only preferred embodiments of the present invention, and any person skilled in the art may modify the present invention or modify it into equivalent technical solutions by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims

1. The utility model provides a series lithium cell group equalizing charge device, includes battery box (5), the middle part of battery box (5) is provided with protective housing (8), lithium cell (7) are evenly installed at the middle part of protective housing (8), be provided with protector, its characterized in that between battery box (5) and protective housing (8): the middle part of the battery box (5) is provided with an equalizing charging device;

2. The device for equalizing charge of series lithium battery packs according to claim 1, wherein: the protection device comprises a sliding barrel (10), wherein the sliding barrel (10) is uniformly and fixedly connected to the middle of the inner wall of the battery box (5), one end of the sliding barrel (10) is connected with a sliding column (19) in a sliding mode, one end of the sliding column (19) is fixedly connected with a clamping plate (9), and a damping spring (6) is arranged on the side wall of the sliding column (19).

3. The device for equalizing charge of series lithium battery packs according to claim 2, wherein: damping spring (6) set up between battery box (5) and clamp plate (9), fixedly connected with bellows (3) between clamp plate (9) and battery box (5), traveller (19) and damping spring (6) set up the below at bellows (3), clamp plate (9) set up on the lateral wall of protective housing (8).

4. The equalizing charging device of claim 1, wherein: the battery charging assembly comprises a charging head (2), the charging head (2) is fixedly connected to the side wall of the battery box (5), one end of the charging head (2) is electrically connected with a connecting wire (1), and one end of the connecting wire (1) is electrically connected to the upper end of the lithium battery (7).

5. The equalizing charging device of claim 1, wherein: the outage subassembly includes current conducting plate (15), current conducting plate (15) set up the top at lithium cell (7), the upper end fixedly connected with insulation board (4) of current conducting plate (15), the even fixedly connected with coupling spring (17) in upper end of insulation board (4), the one end fixed connection of coupling spring (17) is in the inner wall upper end of battery box (5).

6. The equalizing charging device of claim 5, wherein: positive terminal (16) of one side fixedly connected with of current conducting plate (15), positive terminal (16) runs through sliding connection in the upper end of battery box (5), opposite side fixedly connected with negative terminal (13) of current conducting plate (15), negative terminal (13) runs through sliding connection in the upper end of battery box (5), the lateral wall through rotation of battery box (5) is connected with pivot (11).

7. The equalizing charging device of claim 6, wherein: one end fixedly connected with of pivot (11) rotates handle (12), rotate handle (12) and set up in the outside of battery box (5), the one end fixedly connected with connecting plate (18) of pivot (11), the lateral wall fixedly connected with of connecting plate (18) promotes piece (20).

8. The equalizing charging device of claim 7, wherein: promote piece (20) and set up the upper end at insulation board (4), the inner wall upper end fixedly connected with fixed plate (14) of battery box (5), the quantity of fixed plate (14) is two, pivot (11) run through the rotation and connect on the lateral wall of two fixed plates (14), the upper end fixedly connected with fiber grating sensor (22) of insulation board (4), the one end setting of fiber grating sensor (22) is in the top of lithium cell (7), display screen (21) are installed to the upper end of battery box (5), display screen (21) are in the same place with fiber grating sensor (22) electric connection.