CN210379223U

CN210379223U - Loose joint battery pack

Info

Publication number: CN210379223U
Application number: CN201822264598.1U
Authority: CN
Inventors: 史金山
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-31
Filing date: 2018-12-31
Publication date: 2020-04-21
Anticipated expiration: 2028-12-31

Abstract

The active battery pack can solve the problem that a positive electrode end core and a negative electrode end core of the battery pack are too fast to age, does not use an equalizing circuit, and reduces the production cost of the battery pack. The battery comprises a plurality of battery cells, positive and negative ends of a power output, a plurality of pairs of circuit plugs I, and a plurality of battery cells, wherein each battery cell is respectively connected between the positive and negative electrodes of each battery cell; the circuit plugs II are equal in number and correspond to the circuit plugs I one by one, and each pair of circuit plugs II are connected in series and then connected between the positive end and the negative end of the power supply output; the power switch is connected with the positive output end of the power supply; the positive and negative ends of the power output, the power switch, the circuit plugs and the battery cells form a loop; the first circuit plug and the second circuit plug are male and female butting plugs; each battery cell is respectively provided with a serial number mark; the loose-joint battery pack charging device comprises a charging circuit board, wherein a third circuit plug connected with the output end of each charging unit is arranged on the charging circuit board, and the third circuit plug and the first circuit plug are male and female butt plugs.

Description

Loose joint battery pack

Technical Field

The utility model relates to a loose joint battery group and loose joint battery group charging device.

Background

At present, electric vehicles are widely popularized, and convenience is brought to life of people. The electric core inside the electric vehicle battery pack is of a series connection structure, and the electric cores are welded through wires. After long-time use (one to two years), because the current of the series circuit is equal and the voltage is different along with the number of the battery cells (the more the number of the battery cells is, the higher the voltage of the series circuit is), the closer the series circuit is to the voltage of the positive and negative ends of the battery, and the higher the voltage is, the greater the physical damage to the battery cells of the positive and negative ends is, the old battery pack cannot move, the physical damage always occurs to the battery cells at the two ends of the series circuit, the aging speed of the battery cells is three to five times of that of other battery cells in the series circuit, once the performance of the battery pack is in voltage loss, the cliff type reduction is presented, the battery pack can be replaced too fast, but the battery cells except the voltage loss of the positive and negative ends can still be normally maintained, if the battery cells at the electrode ends are replaced, the resistance values of the battery cells are different, the charging is not uniform, namely, the battery, therefore, an equalizing circuit (equalizing board) needs to be used, which increases the cost of the battery pack.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve the above-mentioned problem that prior art exists, provide a loose joint battery group and loose joint battery group charging device, can solve the too fast problem of ageing of the positive negative pole end core of group battery, do not use equalizer circuit, can improve the cyclic utilization number of times of battery and be close theoretical cycle number of times, reduced the manufacturing cost of group battery.

The technical solution of the utility model is that:

a kind of active cell group, including multiple electric core and positive and negative ends of power output, its special character is: further comprising:

each pair of circuit plugs corresponds to one electric core, and each electric core is connected between the positive electrode and the negative electrode of each electric core through a lead;

the circuit plugs II are equal in number and correspond to the circuit plugs I one by one, and each pair of circuit plugs II are connected in series through a second lead and then respectively connected between the positive end and the negative end of the power output through a third lead;

the power switch is arranged on a third wire connected with the positive end of the power output;

the positive and negative ends of the power output, the power switch, the third wire, each circuit plug, the second wire, each battery cell and the first wire form a loop;

the first circuit plug and the second circuit plug are male and female butting plugs;

and each battery cell is respectively provided with a serial number mark.

Furthermore, the first circuit plugs and the second circuit plugs are respectively arranged on the first disk and the second disk and are uniformly distributed along the circumferential direction.

The loose joint battery pack charging device comprises a charging circuit board and is characterized in that the charging circuit board is composed of a plurality of charging units which are respectively connected between a positive end and a negative end of a power supply input, a third circuit plug which is connected with an output end of each charging unit is arranged on the charging circuit board, and the third circuit plug and a first battery cell circuit plug of the loose joint battery pack are male and female butt plugs.

Furthermore, the circuit plugs III are uniformly distributed along the circumferential direction and are in one-to-one correspondence with each other.

Further, the circuit plug III is arranged on the disc III, and the disc III is arranged on the charging circuit board.

The utility model has the advantages that:

1. the position of the battery cell in the battery pack can be replaced, physical damage to the battery cell by the electrode terminal of the battery pack is reduced, the damage is averagely distributed to other battery cells, the aging speed of the battery cell is consistent, the consistency of the battery cell is enhanced, and the cycle life is prolonged to the theoretical cycle number. Independent electric core charges alone, because of the series connection of loose joint group battery for plug-in, can use 220 to volt 4 ampere of charging boards to insert even charging to independent electric core during charging, how many electric cores just use how many charging boards, be equivalent to the charging mode of doing "customization" formula for electric core, the charging process does not receive the resistance value influence of electric core. When the capacities of the electric cores are the same, new and old electric cores can be used simultaneously, and according to the ohm law, the resistance value of the old electric core is large, the charging current is small, the charging time is only influenced, and the electric cores can be fully charged; the use cost of the battery pack can be reduced by mixing the new and old electric cores and not adopting an equalizing charge circuit, the service life of the battery pack can be prolonged, the replacement of the whole battery pack due to poor performance of individual batteries is avoided, and a large amount of manpower and financial resources are saved.

2. The charger can be used universally, and can be used universally as long as the same battery cell (with consistent voltage) is used universally. The state of the battery cell can be visually observed, the battery cell with expansion or large internal resistance value can be timely rejected, the overcharge phenomenon of the battery cell can not be caused, and the battery pack is safer and more reliable in use.

Drawings

FIG. 1 is a schematic diagram of a loose joint battery pack circuit structure according to the present invention;

fig. 2 is a schematic diagram of a distribution structure of the first circuit plug of the present invention;

fig. 3 is a schematic diagram of a distribution structure of a second circuit plug of the present invention;

FIG. 4 is a schematic diagram of the circuit structure of the loose-joint battery pack charging device of the present invention;

fig. 5 is a schematic structural diagram of the charging circuit board of the present invention.

The following drawings: 1. the charging unit comprises a battery cell, a power supply output positive end and a power supply output negative end 2 and 3, a circuit plug I4, a circuit plug I5, a lead I6, a circuit plug II 7, a lead II 8, a lead III 9, a power supply switch 10, a charging circuit board 11, a power supply input positive end and a power supply input negative end 12, a circuit plug III 13, a circuit plug III 14, a disc I15, a disc II 16, a disc III 1001 and a charging unit.

Detailed Description

The invention is described in detail below with reference to the following figures and examples:

as shown in the figure, the utility model discloses a loose joint group battery to rated voltage 48V is as an example, including 16 electric core 1 and positive negative terminal 2, 3 of power output, still include:

16 pairs of circuit plugs I4, wherein each pair of circuit plugs 4 respectively corresponds to one electric core 1 and is respectively connected between the positive electrode and the negative electrode of the corresponding electric core 1 through a lead I5;

the number of the circuit plugs 6 is equal to that of the circuit plugs 4, the circuit plugs are in one-to-one correspondence, and the 16 pairs of circuit plugs 6 are connected in series through a second lead 7 and then are respectively connected between the positive end 2 and the negative end 3 of the power output through a third lead 8;

the power switch 9 is arranged on a lead wire III 8 connected with the power output positive end 2;

the positive and negative ends 2 and 3 of the power output, the power switch 9, the third wire 8, each pair of circuit plugs 6, the corresponding circuit plug I4, each battery cell 1, the second wire 7 and the first wire 5 form a loop;

the first circuit plug 4 and the second circuit plug 6 are male and female butting plugs;

each battery cell 1 is provided with a number mark, which is "a.b.c.d.e … … … P" in this embodiment.

The first circuit plug 4 and the second circuit plug 6 are respectively arranged on the first disk 14 and the second disk 15 and are uniformly distributed along the circumferential direction.

The loose joint battery pack charging device comprises a charging circuit board 10, wherein the charging circuit board 10 is composed of a plurality of charging units 1001 which are respectively connected between a power input positive end 11 and a power input negative end 12, a circuit plug III 13 connected with the output end of each charging unit 1001 is arranged on the charging circuit board 10, and the circuit plug III 13 and a circuit plug I4 of the loose joint battery pack are male and female butt plugs.

The third circuit plugs 13 are uniformly distributed along the circumferential direction and correspond to the first circuit plugs 4 one by one.

Further, the circuit plug three 13 is arranged on a disc three 16, and the disc 16 is arranged on the charging circuit board 10.

The loose joint battery pack charging method comprises the following steps:

1. the power switch 9 is switched off, and the circuit plugs 4 are respectively opposite to and mutually plugged with the circuit plug II 6 of the battery pack charging device;

2. after full filling, the battery cell circuit plugs are pulled out one by one and are sequentially spliced with the corresponding loose joint battery pack circuit plug II 6 end to end according to the numbering sequence (marked by 'A.B.C.D.E … … … P') until full plugging;

3. when the loose joint battery pack is used to be in a power shortage state, repeating the step one;

4. after the battery cell circuit plug II is fully inserted, all the battery cell circuit plug I4 is pulled out, and the battery cell circuit plug I and the corresponding loose joint battery pack circuit plug II 6 are sequentially inserted end to end according to the serial number shifting sequence, namely B.C.D.E … … … P.A, until the battery cell circuit plug II is fully inserted;

5. and repeating the third step and the fourth step until cyclic shift splicing is formed, and finally, balancing the performance of each battery cell.

The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an active cell group, includes a plurality of electric cores and positive negative terminal of power output, characterized by: further comprising:

and each battery cell is respectively provided with a serial number mark.

2. The loose-joint battery pack as set forth in claim 1, wherein: the first circuit plug and the second circuit plug are respectively arranged on the first disc and the second disc and are uniformly distributed along the circumferential direction.

3. The loose-joint battery pack as set forth in claim 1, wherein: the charging circuit board is composed of a plurality of charging units which are respectively connected between the positive end and the negative end of a power supply input, a third circuit plug which is connected with the output end of each charging unit is arranged on the charging circuit board, and the third circuit plug and the first circuit plug are male and female butting plugs.

4. The loose-joint battery pack as set forth in claim 3, wherein: and the circuit plugs III are uniformly distributed along the circumferential direction.

5. The loose-joint battery pack as set forth in claim 4, wherein: the circuit plug III is arranged on the disc III, and the disc III is arranged on the charging circuit board.