CN201887119U

CN201887119U - Power system of electric mining tractor

Info

Publication number: CN201887119U
Application number: CN2010205917832U
Authority: CN
Inventors: 孙立彬; 胡健; 阚国锋; 王升威
Original assignee: HUNAN GELIN NEW ENERGY CO Ltd
Current assignee: HUNAN GELIN NEW ENERGY CO Ltd
Priority date: 2010-11-04
Filing date: 2010-11-04
Publication date: 2011-06-29
Anticipated expiration: 2020-11-04

Abstract

The utility model provides a power system of an electric mining tractor, which comprises a shell and a power unit, wherein the power unit is arranged in the shell; the power unit comprises a plurality of first-class modules which are connected in series, and a first positive pole extension line and a first negative pole extension line are respectively led out from the power unit; each first-class module comprises a plurality of secondary modules which are connected in parallel, a second positive pole extension line and a second negative pole extension line are led out from each first-class module, and a heat-shrinkable bush is sleeved outside the outer surface of each first-class module; and each secondary module comprises a plurality of single lithium ferric phosphate cells, a third positive pole extension line and a third negative pole extension line are respectively led out from each secondary module, and the heat-shrinkable bush is sleeved outside the outer surface of each secondary module. The power system provided by the utility model has good large-power charge-discharge performances and an overlong service life.

Description

The dynamical system of mining electrically propelled traction vehicle

Technical field

The utility model relates to a kind of dynamical system of mining electrically propelled traction vehicle, particularly a kind of mining electrically propelled traction vehicle dynamical system of utilizing a plurality of ferric phosphate lithium cells to constitute.

Background technology

Electrically propelled traction vehicle generally adopts storage battery as dynamical system, and it is widely used in colliery and field, coloured ore deposit.The storage battery of electrically propelled traction vehicle mainly adopts lead-acid battery at present, many shortcomings such as cycle life is short because lead-acid battery exists, use inconvenience, bulky, and producing and scrapping and understand serious environment pollution in the process, be listed in the product of progressively eliminating, therefore be badly in need of seeking the reliable novel storage battery of a kind of novel environment friendly for mining electrically propelled traction vehicle.

Lithium ion battery has advantages such as high-energy-density, high-specific-power and high-temperature behavior are good because of it, extensively become the power supply of mobile phone, computer, video camera etc., and in Aeronautics and Astronautics, artificial satellite and military equipment communication field, progressively replaced traditional power supply.Yet traditional lithium ion battery adopts layer structures such as cobalt acid lithium and LiMn2O4 as its positive electrode, decomposites oxygen easily and cause safety problem such as blast when being heated or overcharge.The monomer ferric phosphate lithium cell then is the LiFePO that adopts olivine-type ₄(LiFePO4) as positive electrode, decomposition temperature height not only, and can not produce oxygen, thoroughly solved the safety problem of lithium ion battery.The monomer ferric phosphate lithium cell also has high theoretical specific capacity, moderate advantages such as voltage platform, and its good cycle, low price, security performance are good, are insider's the most potential confessed secondary cell system.

Summary of the invention

The utility model has overcome the deficiencies in the prior art, and a kind of dynamical system of mining electrically propelled traction vehicle is provided, and it comprises: a shell and a power unit, and described power unit is arranged in the shell;

With a plurality of monomer ferric phosphate lithium cells formation secondary module that is connected in parallel, described secondary module outer surface is arranged with a heat-shrinkable T bush with its encapsulation, and draws one first positive outside wire and one first negative outside wire;

First positive outside wire of a plurality of described secondary module and first negative outside wire be connected in parallel form the one-level module, described one-level module exterior surface is arranged with a heat-shrinkable T bush with its encapsulation, and draws one second positive outside wire and one second negative outside wire;

Second positive outside wire of a plurality of described one-level modules is connected in series the described power unit of formation successively with second negative outside wire, and draws one the 3rd positive outside wire and one the 3rd negative outside wire.

Preferably, each described secondary module all is in series with one and crosses flow fuse, and the described flow fuse of crossing is used for cutting off electric current when the current anomaly of described secondary module raises.

Preferably, it is corresponding with it and with the insulation board of its sealing also to be provided with a geometry in each described one-level module exterior surface.

The utility model utilizes the monomer ferric phosphate lithium cell to replace the lead acid accumulator that uses at present, has the good high rate charge-discharge performance and the useful life of overlength; The utility model not only redesigns and improves the modular structure of existing electrically propelled traction vehicle storage battery, has also introduced one and cross flow fuse in each little module in parallel, and circuit is played overcurrent protection.

Description of drawings:

Fig. 1 is the secondary module three-dimensional structure diagram;

Fig. 2 is an one-level module three-dimensional structure diagram;

Fig. 3 is the power unit three-dimensional structure diagram.

Description of reference numerals: 1-secondary module; 11-monomer ferric phosphate lithium cell; 12-first positive outside wire; 13-first negative outside wire; The 14-nickel strap; 2-one-level module; 21-second positive outside wire; 22-second negative outside wire; The 3-power unit; 31-the 3rd positive outside wire; 32-the 3rd negative outside wire; 4-crosses flow fuse; The 5-insulation board.

Embodiment:

For feature and advantage of the present utility model can be become apparent more, the utility model is described in further detail below in conjunction with drawings and Examples.Obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

See also Fig. 1, Fig. 2 and Fig. 3, the dynamical system of mining electrically propelled traction vehicle of the present utility model comprises: a shell and a power unit 3, and described power unit 3 is arranged in the shell;

A plurality of monomer ferric phosphate lithium cells 11 are connected in parallel forms secondary module 1, and described secondary module 1 outer surface is arranged with a heat-shrinkable T bush with its encapsulation, and draws one first positive outside wire 12 and one first negative outside wire 13;

First positive outside wire 12 of a plurality of described secondary module 1 and first negative outside wire 13 be connected in parallel form one-level module 2, the outer surface of described one-level module 2 is arranged with a heat-shrinkable T bush with its encapsulation, and draws one second positive outside wire 21 and one second negative outside wire 22;

Second positive outside wire 21 of a plurality of described one-level modules 2 is connected in series the described power unit 3 of formation successively with second negative outside wire 22, and draws one the 3rd positive outside wire 31 and one the 3rd negative outside wire 32.

Preferably, each described secondary module 1 all is in series with one and crosses flow fuse 4, and it is used for cutting off electric current when the current anomaly of secondary module 1 raises.

Preferably, it is corresponding with it and with the insulation board 5 of its sealing also to be provided with a geometry at the outer surface of each described one-level module 2, plays insulating effect.

Preferably, when a plurality of monomer ferric phosphate lithium cells 11 are connected in parallel, can be designed to single arrangement or many row's arrangements according to the geomery needs of secondary module 1.

Preferably, when a plurality of secondary module 1 are connected in parallel, can be designed to single arrangement or many row's arrangements according to the geomery needs of one-level module 2.

Preferably, when a plurality of one-level modules 2 are connected in series, can be designed to single arrangement or many row's arrangements according to the geomery needs of power unit 3.

Below in conjunction with an embodiment manufacturing process of the present utility model is described in detail.The employing capacity is the power-type 18650 monomer ferric phosphate lithium cells 11 of 1100mAh in the present embodiment, and the required voltage of the dynamical system of electrically propelled traction vehicle is 48V.

At first, with 20 monomer ferric phosphate lithium cells 11 can (specification of nickel strap is in the present embodiment: 0.15mm * 10mm) capacity of being connected in parallel into be a 22Ah (ampere-hour by nickel strap 14, the unit of battery capacity, the i.e. product of the discharging current of battery and discharge time) secondary module 1; Heat-shrink tube is sheathed on the outer surface of each this secondary module 1 and with its encapsulation; Can on first positive outside wire 12 of each secondary module 1, connect one and cross flow fuse 4, secondary module 1 is played overcurrent protection, and draw one first positive outside wire 12 and draw one first negative outside wire 13 from its negative pole from the positive pole of secondary module 1; Wherein, first positive outside wire 12 and first negative outside wire, 13 employing specifications are 1.5mm ²～4.0mm ²The multicore annealed copper wire.

Then, be that first positive outside wire 12 and first negative outside wire 13 of the secondary module in parallel 1 of 22Ah can be 10mm by specification with 15 capacity ²～25mm ²The multicore annealed copper wire be connected in parallel respectively, the formation capacity is the one-level module 2 of 330Ah; Heat-shrink tube is sheathed on the outer surface of each described one-level module 2 and with its encapsulation, also its corresponding insulation board 5 of a geometry can be set around the outside of the one-level module 2 of finishing encapsulation again, with one-level module 2 sealed insulations, and draw one second positive outside wire 21 and one second negative outside wire 22.

At last, with 15 capacity one-level module 2 that is 330Ah second positive outside wire 21 is connected in series successively with second negative outside wire 22, formation voltage is the power unit 3 of 48V; This power unit 3 is arranged in the shell, and draws one the 3rd positive outside wire 31 and the 3rd negative outside wire 32, it is used to connect external equipment, thereby forms the dynamical system of electrically propelled traction vehicle; Also the 3rd positive outside wire and the 3rd negative outside wire a positive and negative pole be can be connected respectively, itself and the more convenient and quicker that is connected of external equipment made.

Need to prove, the model that is adopted in the present embodiment, size and numerical value are only done the explanation the technical solution of the utility model, not as limit, can do corresponding adjustment to the numerical value in the present embodiment according to the required different magnitude of voltage of the dynamical system of electrically propelled traction vehicle.

Obviously, above embodiment only in order to the explanation the technical solution of the utility model, but not limits it; Those of ordinary skill in the art can make amendment to the technical scheme of utility model, perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model embodiment technical scheme.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification interior.

Claims

1. the dynamical system of a mining electrically propelled traction vehicle is characterized in that, comprising: a shell and a power unit, and described power unit is arranged in the shell;

2. the dynamical system of mining electrically propelled traction vehicle according to claim 1 is characterized in that, each described secondary module all is in series with one and crosses flow fuse, and the described flow fuse of crossing is used for cutting off electric current when the current anomaly of described secondary module raises.

3. the dynamical system of mining electrically propelled traction vehicle according to claim 2 is characterized in that, it is corresponding with it and with the insulation board of its sealing also to be provided with a geometry in each described one-level module exterior surface.