CN101969137A

CN101969137A - Lithium iron phosphate battery pack for electric vehicle

Info

Publication number: CN101969137A
Application number: CN2010102777740A
Authority: CN
Inventors: 石增超; 陈兵
Original assignee: HETER ELECTRONICS GROUP CO Ltd
Current assignee: HETER ELECTRONICS GROUP CO Ltd
Priority date: 2010-09-03
Filing date: 2010-09-03
Publication date: 2011-02-09

Abstract

The invention discloses a lithium iron phosphate battery pack for an electric vehicle, which is safe and firm and can effectively use space. The lithium iron phosphate battery pack comprise a battery box, a battery cover is covered on the battery box which is provided with polar post fixing holes internally fixedly provided with a polar post, the polar post is provided with a through hole in the middle, the upper part of the through hole is a battery pack connection hole, and the lower part of the through hole is a busbar connection hole; and the battery box is internally arrayed with battery cores, a busbar is arranged between the electrodes of the battery cores and the battery box, and the busbar is fixedly connected with the polar post. The battery cover is provided with two polar post fixing holes, and the upper surface of the battery cover between the two polar post fixing holes is fixedly connected with an isolation rib which is in an integral structure with the battery cover. A piece of barley paper is arranged on one electrode side of the battery cores and located between the battery cores and the busbar. The polar post is fixedly arranged on the battery cover through a fixing nut. The battery cores can be arranged in a straight way, a dense way or a semi-dense way. By adopting the combination mode of single battery cores, the invention can be used for favorably fixing the battery cores in parallel, thereby maximally saving space.

Description

Electric vehicle ferric phosphate lithium cell group

Technical field

The present invention relates to a kind of electric vehicle electrokinetic cell, relate in particular to a kind of electric vehicle ferric phosphate lithium cell group.

Background technology

Along with electrokinetic cell is widely used in electric automobiles, it is to be solved that the PACK assembling of electrokinetic cell also has many technical barriers to throw off restraint, the power lithium-ion battery great majority are the series-parallel application of more piece, electric motor car can produce vibration at work, move, can could guarantee that so how the series-parallel battery pack of more piece not damage because of vibration in this process? and some equipment is very strict to spatial limitation, how saving the space to greatest extent, also is a technical barrier.

Summary of the invention

The purpose of this invention is to provide a kind of safety and firmness, can effectively utilize the electric vehicle ferric phosphate lithium cell group in space.

For achieving the above object, the technical solution used in the present invention is:

A kind of electric vehicle ferric phosphate lithium cell group, comprise battery case, be stamped battery cover above the battery case, it is characterized in that: have the pole fixing hole on the battery cover, pole fixing hole internal fixation is equipped with pole, have through hole in the middle of the pole, through hole top is the battery pack connecting hole, and the through hole bottom is the bus-bar connecting hole; Be arranged with electric core in the battery case, be provided with bus-bar between the electrode of electric core and the battery case, bus-bar is fixedlyed connected with pole.

According to described electric vehicle ferric phosphate lithium cell group, it is characterized in that: have two pole fixing holes on the described battery cover, be fixedly connected with isolation bar above the battery cover between two pole fixing holes, isolation bar and battery cover are structure as a whole.

According to described electric vehicle ferric phosphate lithium cell group, it is characterized in that: the positive pole of described electric core posts highland barley paper, and highland barley paper is between electric core and bus-bar.

According to described electric vehicle ferric phosphate lithium cell group, it is characterized in that: described pole is fixedly mounted on the battery cover by hold-down nut.

According to described electric vehicle ferric phosphate lithium cell group, it is characterized in that: the arrangement mode of described electric core includes in line, solid matter, half solid matter.

The present invention adopts the mode of monomer electricity core combination, and is in parallel fixing to electric core well, saved the space to greatest extent, effectively utilizes the space, has performances such as higher fail safe, reliability, practicality, environmental protection.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the main TV structure schematic diagram of battery cover among Fig. 1;

Fig. 3 is the plan structure schematic diagram of battery cover among Fig. 1;

Fig. 4 be among Fig. 1 battery cover look up structural representation;

Fig. 5 is the A-A cutaway view of Fig. 3;

Fig. 6 is the left TV structure schematic diagram of battery cover among Fig. 1;

Fig. 7 is the B-B cutaway view of Fig. 3;

Fig. 8 is the main TV structure schematic diagram of battery case among Fig. 1;

Fig. 9 is the left TV structure schematic diagram of battery case among Fig. 1;

Figure 10 be among Fig. 1 battery case look up structural representation;

Figure 11 is the C-C cutaway view of Fig. 8;

Figure 12 is the D-D cutaway view of Fig. 9;

Figure 13 is the package assembly schematic diagram of pole among Fig. 1, bus-bar and electric core;

Figure 14 is the main TV structure schematic diagram of Figure 13;

Figure 15 is the left TV structure schematic diagram of Figure 13;

Figure 16 is the structural representation of looking up of Figure 13;

Figure 17 is the plan structure schematic diagram of pole among Fig. 1;

Figure 18 is the left TV structure schematic diagram of pole among Fig. 1;

Figure 19 is the E-E cutaway view of Figure 17;

Figure 20 is the structural representation of bus-bar among Fig. 1;

Figure 21 is the structural representation of highland barley paper among the present invention;

Figure 22 is the structural representation of hold-down nut among Fig. 1;

Figure 23 is the structural representation of the electric core among the present invention when in line;

Structural representation when Figure 24 is an electric core solid matter among the present invention;

Structural representation when Figure 25 is electric core half solid matter among the present invention.

In the accompanying drawing:

1, battery cover; 2, isolation bar; 3, hold-down nut; 4, pole; 5, bus-bar; 6, electric core; 7, battery case; 8, pole fixing hole; 9, battery pack connecting hole; 10, bus-bar connecting hole; 11, a blue or green paper; 12, insulating material.

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is further described:

A kind of electric vehicle ferric phosphate lithium cell group, shown in Fig. 1, Figure 13 to 16, comprise battery case 7 (referring to Fig. 8 to 12), be stamped battery cover 1 (referring to Fig. 2 to 7) above the battery case 7, have pole fixing hole 8 on the battery cover 1, pole fixing hole 8 internal fixation are equipped with pole 4 (referring to Figure 17 to 19), have through hole in the middle of the pole 4, through hole top is battery pack connecting hole 9, and the through hole bottom is a bus-bar connecting hole 10; Be arranged with electric core 6 in the battery case 7, be provided with bus-bar 5 (referring to Figure 20) between the electrode of electric core 6 and the battery case 7, bus-bar 5 is fixedlyed connected with pole 4.In the present embodiment, be fixedly connected with isolation bar 2 above having the battery cover 1 between 8, two pole fixing holes 8 of two pole fixing holes on the battery cover 1, isolation bar 2 is structure as a whole with battery cover 1.The positive pole of electricity core 6 posts highland barley paper 11 (referring to Figure 21), is used for insulated electro core 6 anodal and negative poles (body is a negative pole), and highland barley paper 11 is between electric core 6 and bus-bar 5.Pole 4 is fixedly mounted on the battery cover 1 by hold-down nut 3 (referring to Figure 22).The arrangement mode of electricity core 6 includes in line, solid matter, half solid matter.

Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design concept of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.

Battery case among the present invention and battery cover all adopt the ABS material, and this material hardness is strong, have good insulation performance and high-low temperature resistant impact property.Have the pole fixing hole on the battery cover, be used to draw pole, pole adopts electric conductivity and all good brass materials of machinability to be made, have the external screw thread of M24 on the pole, cooperate the hold-down nut of M24 pole can well be fixed on the battery cover, pole inside has through hole, top is the screwed hole (being the battery pack connecting hole) of M8, be used for battery pack being carried out the connection in series-parallel combination in conjunction with the M8 screw, the bottom is the screwed hole (being the bus-bar connecting hole) of M3, is used for pole and bus-bar are connected and fixed reliably.Bus-bar employing electric conductivity red copper material preferably forms, and the shape after agent structure and the electric core permutation and combination matches, and can well weld together with electric core.

In the present invention, that the arrangement mode of electric core includes is in line, solid matter and half solid matter, and the arrangement space availability ratio height of electric core helps heat radiation.As shown in figure 23, in line two row concentrics, the electric core that quantity is identical of being meant arranged, and be tangent between the first electric core of row and the electric core of second row, and concentric is arranged between the same column electricity core.As shown in figure 24, solid matter is meant that two row concentrics, electric core that quantity is identical arrange, and has n-1 electric core tangent with the first capable adjacent two electric cores in n the electric core of second row.As shown in figure 25, half solid matter between solid matter and in line between, be meant and in the middle of its electric core, add insulating material that the total length that makes battery pack increases and the overall width of battery pack reduces.

Claims

1. electric vehicle ferric phosphate lithium cell group, comprise battery case (7), be stamped battery cover (1) above the battery case (7), it is characterized in that: have pole fixing hole (8) on the battery cover (1), pole fixing hole (8) internal fixation is equipped with pole (4), have through hole in the middle of the pole (4), through hole top is battery pack connecting hole (9), and the through hole bottom is bus-bar connecting hole (10); Be arranged with electric core (6) in the battery case (7), be provided with bus-bar (5) between the electrode of electric core (6) and the battery case (7), bus-bar (5) is fixedlyed connected with pole (4).

2. electric vehicle ferric phosphate lithium cell group according to claim 1, it is characterized in that: have two pole fixing holes (8) on the described battery cover (1), be fixedly connected with isolation bar (2) above the battery cover (1) between two pole fixing holes (8), isolation bar (2) is structure as a whole with battery cover (1).

3. electric vehicle ferric phosphate lithium cell group according to claim 2 is characterized in that: the positive pole of described electric core (6) posts highland barley paper (11), and highland barley paper (11) is positioned between electric core (6) and the bus-bar (5).

4. electric vehicle ferric phosphate lithium cell group according to claim 3 is characterized in that: described pole (4) is fixedly mounted on the battery cover (1) by hold-down nut (3).

5. according to each described electric vehicle ferric phosphate lithium cell group in the claim 1 to 4, it is characterized in that: the arrangement mode of described electric core (6) includes in line, solid matter, half solid matter.