CN201444492U

CN201444492U - Maintainable lithium ion battery

Info

Publication number: CN201444492U
Application number: CN2009200248783U
Authority: CN
Inventors: 林道勇
Original assignee: Shandong Realforce Group New Energy Science And Technology Co Ltd
Current assignee: Shandong Realforce Group New Energy Science And Technology Co Ltd
Priority date: 2009-05-14
Filing date: 2009-05-14
Publication date: 2010-04-28
Anticipated expiration: 2019-05-14

Abstract

The utility model relates to a maintainable battery, and particularly provides a maintainable lithium ion battery. The maintainable lithium ion battery comprises a battery cell, a battery casing, a battery positive electrode pole and a battery negative electrode pole, wherein the battery cell is disposed inside the battery casing, the battery positive electrode pole and the battery negative electrode pole are arranged on the battery casing, at least one passage for connecting the inside of the battery casing with the outside is further disposed on the battery casing, and an openable sealing device is arranged at an outlet position of the passage communicated with the outside. The maintainable lithium ion batter has the advantages of arranging the openable passage on the battery casing or a cover plate, finishing steps of removing air inside the battery, refilling electrolyte, extracting vacuum and the like through the passage, effectively improving performance of the lithium ion battery, and accordingly more effectively utilizing the lithium ion battery and being favorable for saving cost.

Description

Maintainable lithium-ion battery

Technical field

The utility model relates to a kind of lithium ion battery, relates in particular to a kind of maintainable lithium-ion battery.

Background technology

Lithium ion battery is since nineteen nineties succeeds in developing, because it has the energy height, have extended cycle life, operating voltage height, special advantages such as pollution-free, now be widely used in the electronic apparatuss such as mobile phone, digital camera, notebook computer, and progressively to electric bicycle, electric automobile, high-capacity dynamical lithium-ion battery applications such as stand-by power supply are expanded.If lithium ion battery can be divided into two kinds by the battery case packaged form, a kind of is the duricrust lithium ion battery, usually with box hat, aluminum hull and plastic housing packing; Another kind is a flexible packing lithium ion battery, with soft aluminum-plastic composite membrane packing, also is divided into liquid flexible packing lithium ion electric pond and polymer Li-ion battery two classes usually.

The operation principle of lithium ion battery is: during battery charge, lithium ion in the positive electrode (LiMn2O4, LiFePO 4, ternary material, cobalt acid lithium etc.) takes off embedding and comes out, pass to electrolyte and process electrolyte, pass barrier film and enter into negative material (graphite etc.); During battery discharge, lithium ion takes off embedding again and comes out from negative material (graphite etc.), passes to electrolyte and process electrolyte, passes barrier film and gets back in the positive electrode (LiMn2O4, LiFePO 4, ternary material, cobalt acid lithium etc.).With the carrying out that discharges and recharges, lithium ion constantly embeds in anodal and negative pole by electrolyte and deviates from, and visible electrolyte occupies important function in lithium ion battery.

Power lithium-ion battery mainly contains following two characteristics: one, the capacity of cell is generally higher, and cost is higher, and is also very high to performance requirement; Two, cell generally will carry out series and parallel, uses to constitute battery pack, owing to have conforming difference between the cell, can have behindhand battery in the battery pack.In actual use, battery pack have problem generally just wherein a small part cell, when capacity attenuation fast, during charging voltage rise fast, discharge voltage descend problem such as fast low such as battery capacity appears, cause whole Battery pack to go wrong.And the cell that goes wrong, to a great extent owing to following two reasons cause: one, because some side reaction meetings that inside battery produces consume electrolyte, the electrolyte that causes participating in cell reaction is very few, influence the transmission of lithium ion in battery, thereby battery performance is damaged; Two, because some side reaction meetings that inside battery produces produce pernicious gas, and pernicious gas that produces and battery material react or remain in the transmission that influences lithium ion between positive electrode, negative material and the barrier film, further damage the performance of battery.

Because lithium ion battery is very responsive to moisture content, a spot of water just can cause fatefulue destruction to the performance of lithium ion battery, so seals fully during the lithium ion battery use, and this sealing of traditional manufacture method is expendable.

Therefore make lithium ion battery with conventional method, after battery goes wrong, do not repair way substantially, because the first can not realize the pernicious gas in the battery is discharged; The 2nd, can not realize to replenishing electrolyte in the battery, to improve the performance of battery.

The utility model content

The purpose of this utility model is to avoid the deficiencies in the prior art that a kind of maintainable lithium-ion battery is provided, and is provided with openable passage on lithium ion battery, can safeguard when battery damages, and is convenient to for the cell row removing and harmful gas, adds electrolyte.

For achieving the above object, the technical scheme that the utility model is taked is: a kind of maintainable lithium-ion battery, comprise battery, battery container, the positive and negative pole of battery, described battery is arranged in the battery container, battery positive and negative pole be arranged on the described battery container, also be provided with the passage that at least one is in communication with the outside the battery case enclosure interior on the described battery container, be provided with openable sealing device in the exit that described passage is in communication with the outside.

Further, at least one face of described battery container is a battery cover board, and the positive and negative pole of battery is arranged on the battery cover board.

Further, described battery cover board is provided with the passage that is in communication with the outside in the battery case housing, is provided with openable sealing device in the exit that described passage is in communication with the outside.

Further, be provided with a passage that the battery case enclosure interior is in communication with the outside at least one pole of described battery, be provided with openable sealing device in the exit that described passage is in communication with the outside.

Further, described openable sealing device is steel ball or aluminium lid or Xi Gai or rivet or screw or bolt.

Further, described passage is a hollow tube, and hollow tube one end is communicated with battery container is interior, and opposite side is communicated with battery is extraneous.

Further, described battery case can be box hat, aluminum hull and plastic housing.

Further, an end that is in communication with the outside at described hollow tube seals by Capsule.

Further, an end that is in communication with the outside at described hollow tube is provided with screw thread, seals by screw or bolt seal or by Capsule.

Further, described hollow tube has identical material or fusing point with described battery case.

The beneficial effects of the utility model are: establish openable passage on battery container or cover plate, conveniently damage or the bad lithium ion battery of result of use are safeguarded, promptly get rid of gas in the battery, add electrolyte, step such as vacuumize by passage, can effectively improve the performance of lithium ion battery, thereby more effectively utilize lithium ion battery, help saving cost.

Passage is a hollow tube, utilizes hollow tube that lithium ion battery is safeguarded, more easy operating, need not distinctive vaccum-pumping equipment, liquid-injection equipment, wetting apparatus and can realize the maintenance of lithium ion battery, more the conserve batteries cost more helps effective utilization of battery, and can realize on-line maintenance.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the structural representation of the utility model embodiment 2;

Fig. 3 is the structural representation of A part among the utility model embodiment 2;

Fig. 4 is the structural representation of the utility model embodiment 3;

Fig. 5 is the utility model embodiment 5 maintaining method schematic flow sheets;

Embodiment

Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.

Embodiment 1, as shown in Figure 1, a kind of maintainable lithium-ion battery, comprise battery 1, battery container 2, the positive and negative pole 3 of battery, described battery 1 is arranged in the battery container 2, face above described battery container is a battery cover board 5, and the positive and negative pole 3 of battery is arranged on the battery cover board 5.Described battery cover board 5 is provided with the passage 4 that is in communication with the outside in the battery case housing, is provided with openable sealing device 6 in the exit that described passage 4 is in communication with the outside.Described openable sealing device 6 is a bolt.

Embodiment 2, as Fig. 2, shown in Figure 3, identical with embodiment 1, be provided with a passage 4 that the battery case enclosure interior is in communication with the outside in the positive and negative pole 3 of different is described battery, be provided with openable sealing device 6 in the exit that described passage is in communication with the outside.

Embodiment 3, and is identical with embodiment 1 as Fig. 4, and different is that described passage is a hollow tube 7, and hollow tube 7 one ends are communicated with battery container is interior, and opposite side is communicated with battery is extraneous.An end that is in communication with the outside at described hollow tube is provided with Capsule 8 and seals.

Embodiment 4, identical with embodiment 1, different is that described battery 1 is arranged in the battery container 2, the positive and negative pole 3 of battery is arranged on the described battery container 2, also be provided with the passage 4 that at least one is in communication with the outside the battery case enclosure interior on the described battery container 2, be provided with openable sealing device 6 in the exit that described passage 4 is in communication with the outside.

Embodiment 5, and as Fig. 5, the method for using maintainable lithium-ion battery provided by the utility model to carry out battery maintenance may further comprise the steps:

101 passages that the battery case enclosure interior is in communication with the outside are opened;

102 by the gas in the described passage 4 extraction lithium ion batteries, gets rid of the gas in the lithium ion battery;

103 add electrolyte by described passage 4 for lithium ion battery;

104 leave standstill battery with wetting after adding electrolyte;

105 by described passage 4 be lithium ion battery vacuum-pumping;

106 with described passage 4 sealings.

In the process that said method carries out, employed vaccum-pumping equipment adopts general vacuum pump to realize, fluid injection adopts simple device to finish, the service equipment cost is low, the maintenance process of battery is also simple to operation, not only help making full use of of lithium ion battery, more help prolonging the life-span and the result of use of lithium ion battery, and can realize on-line maintenance.

Embodiment 6, and is identical with the method for embodiment 5, and different is that described passage is a hollow tube, and maintaining method is realized by hollow tube.

The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. maintainable lithium-ion battery, comprise battery, battery container, the positive and negative pole of battery, described battery is arranged in the battery container, and the positive and negative pole of battery is arranged on the described battery container, it is characterized in that, also be provided with the passage that at least one is in communication with the outside the battery case enclosure interior on the described battery container, be provided with openable sealing device in the exit that described passage is in communication with the outside.

2. maintainable lithium-ion battery as claimed in claim 1 is characterized in that, at least one face of described battery container is a battery cover board, and the positive and negative pole of battery is arranged on the battery cover board.

3. maintainable lithium-ion battery as claimed in claim 2 is characterized in that described battery cover board is provided with the passage that is in communication with the outside in the battery case housing, is provided with openable sealing device in the exit that described passage is in communication with the outside.

4. maintainable lithium-ion battery as claimed in claim 1, it is characterized in that, be provided with a passage that the battery case enclosure interior is in communication with the outside at least one pole of described battery, be provided with openable sealing device in the exit that described passage is in communication with the outside.

5. as claim 1 or 3 or 4 described maintainable lithium-ion batteries, it is characterized in that described openable sealing device is steel ball or aluminium lid or Xi Gai or rivet or screw or bolt.

6. as claim 1 or 2 or 3 or 4 described maintainable lithium-ion batteries, it is characterized in that described passage is a hollow tube, hollow tube one end is communicated with battery container is interior, and opposite side is communicated with battery is extraneous.

7. as claim 1 or 2 or 3 or 4 described maintainable lithium-ion batteries, it is characterized in that described battery case is box hat or aluminum hull or plastic housing.

8. maintainable lithium-ion battery as claimed in claim 6 is characterized in that, an end that is in communication with the outside at described hollow tube seals by Capsule.

9. maintainable lithium-ion battery as claimed in claim 6 is characterized in that, an end that is in communication with the outside at described hollow tube is provided with screw thread, seals by screw or bolt seal or by Capsule.

10. maintainable lithium-ion battery as claimed in claim 6 is characterized in that, described hollow tube has identical material or fusing point with described battery case.