CN200962138Y

CN200962138Y - Fully-closed three-pole system test device

Info

Publication number: CN200962138Y
Application number: CN 200620063674
Authority: CN
Inventors: 刘元刚; 王敬国; 唐致远; 王倩
Original assignee: Energy Engineering Research Center Of Tianjin University; Mcnair Technology Co Ltd
Current assignee: Mcnair Technology Co Ltd
Priority date: 2006-09-01
Filing date: 2006-09-01
Publication date: 2007-10-17
Anticipated expiration: 2016-09-01

Abstract

The utility model discloses a totally-enclosed triple-electrode system testing device which comprises a main body with a hollow chamber containing the electrolytic solution and an outer-ring portion. The main body is provided with an electrolytic solution injection orifice communicated with the hollow chamber, an embedding passage for the studied electrode, an embedding passage for the assistant electrode and an embedding passage for the reference electrode. The main body is sleeved with the outer-ring portion and the corresponding embedding passages are all provided with a through hole. A sealing fixation piece is inserted into the embedding passages along the corresponding through hole, which can be assembled into a triple-electrode system simulating the lithium ion battery in open environment with room temperature and effectively carries out the electrochemistry property testing, such as the charging and discharging capacity, cyclic voltammeter curve, electrochemistry alternating impedance or the like The totally-enclosed triple-electrode system testing device achieves good hermeticity, precise measuring data, simple operation, low cost and great safety property with simple structure and strong practicality.

Description

Totally enclosed type three-electrode system proving installation

Technical field

The utility model relates to a kind of three-electrode system proving installation, is meant a kind of totally enclosed type three-electrode system proving installation that is used for the electrochemical property test of simulation lithium ion cell electrode especially.

Background technology

Along with advancing by leaps and bounds of science and technology, lithium ion battery is various high-tech electronics devices and the indispensable power supply of mobile device, have that operating voltage height, volume are little, light weight, energy height, memory-less effect, pollution-free and advantage such as self discharge is little, have extended cycle life, for example on portable electric appts such as notebook computer, mobile phone, digital camera, miniature camera, MP3, MP4 and PDA(Personal Digital Assistant), be used widely; The current research boom that worldwide starts lithium ion battery, particularly in energy today in short supply day by day, the importance of this research is just more outstanding; Therefore, how effectively, easily the electrochemical property test of lithium ion cell electrode is also highlighted thereupon, the chemical property of traditional test battery electrode is to utilize the ready-made finished product battery of elder generation to come its positive pole, negative pole and electrolytic solution are tested, generally in test process, need relate to contrasting of contrast electrode usually and just can obtain accurately test result, and be contrast electrode can't can't be inserted to the finished product battery, so resulting data are difficult to study and judge exactly the chemical property between anode, negative pole and the electrolytic solution.

At present, in the industry for solving above-mentioned problem, a kind of three-electrode system method of testing appears, it is taked just, negative electrode, contrast electrode and electrolytic solution etc. are put in the glove box and finish, described glove box is can realize test process in its seal box in order to lithium ion is simulated in three-electrode system and the electro-chemical test process, but, its complex operation, sealing effectiveness is not good yet, thereby can have influence on test data, and needs usually all must be put in the glove box whole testing apparatus in actual mechanical process, so cause the waste on the resource, cost is also high, and the inconvenience that operates is given and cause puzzlement in the industry in test process.

The utility model content

The utility model is at above-mentioned the deficiencies in the prior art, fundamental purpose is to provide a kind of totally enclosed type three-electrode system proving installation of lithium ion battery, it can be assembled into simulation lithium ion battery three-electrode system and effectively it be carried out electrochemical property test under the room temperature open environment, have good airproof performance, accurate, easy and simple to handle, the low good effect of security performance that reaches of cost of test data simultaneously.

For realizing above-mentioned purpose, the utility model is taked following technical scheme:

A kind of totally enclosed type three-electrode system proving installation, it comprises:

One has the main part of the ccontaining cavity of splendid attire electrolytic solution, and this main part is provided with that the electrolytic solution injection orifice that communicates with this ccontaining cavity, research electrode are inserted passage, auxiliary electrode inserts passage and contrast electrode is inserted passage;

One outer portion, this outer portion is sheathed on the main part, and corresponding main part respectively inserts passage and be provided with a through hole, inserts a sealing fixture in the passage along insert corresponding with it of this through hole.

Described main part is stainless steel or high-strength aluminum alloy material.

Described main part is cylindrical-shaped structure or triangular column structure.

The utility model compared with prior art, its beneficial effect is as follows:

1. can under the room temperature open environment, be assembled into simulation lithium ion battery three-electrode system and effectively it be carried out electrochemical property test, for example tests such as charge/discharge capacity, cyclic voltammetry curve and electrochemical AC impedance.

2. its good airproof performance, test data are accurate, easy and simple to handle, cost low and the good effect of security performance.

3. the utility model is simple in structure, and is practical.

Description of drawings

Fig. 1 sees structural representation outside the utility model first embodiment;

Fig. 2 is the utility model decomposition texture synoptic diagram;

Fig. 3 is Fig. 1 plan structure synoptic diagram;

Fig. 4 is the A-A sectional structure synoptic diagram of Fig. 3;

Fig. 5 sees structural representation outside the utility model second embodiment;

Fig. 6 is Fig. 5 plan structure synoptic diagram.

The drawing reference numeral explanation:

1, main part 11, ccontaining cavity 12, injection orifice 13, research electrode insert that passage 14, auxiliary electrode are inserted passage 15, contrast electrode is inserted passage 2, outer portion 21, through hole 22, fixture

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

See also Fig. 1 to shown in Figure 4, it is the concrete structure synoptic diagram of the utility model first embodiment; Described totally enclosed type three-electrode system proving installation comprises main part (1) and outer portion (2), wherein:

Main part (1) is cylindric, can make by stainless steel or high-strength aluminum alloy material, its center has ccontaining cavity (11), be equipped with along the outer periphery of main part (1) that the electrolytic solution injection orifice (12), the research electrode that communicate with ccontaining cavity (11) are inserted passage (13), auxiliary electrode inserts passage (14) and contrast electrode is inserted passage (15), each passage can insert and lead to the outside for respective electrode, and described injection orifice (12) provides to ccontaining cavity (11) and injects the design that electrolytic solution is done.

Outer portion (2) is circular, this outer portion (2) is sheathed on the main part (1), and corresponding main part (1) is respectively inserted passage (13,14,15) and is provided with a through hole (21), insert a sealing fixture (22) in the passage (13,14,15) along insert corresponding of this through hole (21), to reach the effect that is fixedly arranged on outer portion on the main part and plays sealing with it.

The use principle of the utility model totally enclosed type three-electrode system proving installation is as follows:

To study electrode, auxiliary electrode, contrast electrode respectively inserting in the ccontaining cavity (11) that stretches into main part (1) the passage (13,14,15) from correspondence successively earlier, utilizing nickel wire that each electrode is pulled out with corresponding testing apparatus is connected, so that electrochemical property test, for example tests such as charge/discharge capacity, cyclic voltammetry curve and electrochemical AC impedance; Then outer portion (2) is set on the main part (1), again by sealing fixture (22) corresponding passage (13 of inserting on the set through hole (22) of outer portion (2) and corresponding main part, 14,15) plug-in mounting, from the injection orifice (12) of main part (1), in idle space (11), inject corresponding electrolytic solution at last, thereby finish the assembling of simulation lithium ion battery three-electrode system, its above-mentioned action is to operate under the room temperature open environment basically, and relative glove box, it has good airproof performance, test data is accurate, easy and simple to handle, low and the good effect of security performance of cost.

Fig. 5, shown in Figure 6 for another example, it is the concrete structure synoptic diagram of the utility model second embodiment; Wherein, present embodiment comprises main part (1) and outer portion (2) equally, and it is compared with first embodiment, only difference be in the present embodiment main part (1) and outer portion (2) be shaped as the triangular column, all the other structures are all identical, do not give unnecessary details so do not add to give at this.Therefore, the main part of above-mentioned cylindric, triangular column and outer portion structure are the designs of doing for convenient operation and combination, and still, the main part and the outer portion of other shapes match, also can realize the purpose of the utility model, therefore give restriction for adding at this.

The above, it only is the preferred embodiment of the utility model totally enclosed type three-electrode system proving installation, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of totally enclosed type three-electrode system proving installation is characterized in that: comprising:

One outer portion, this outer portion is sheathed on the main part, and the passage of respectively inserting of corresponding main part is provided with a through hole, inserts a sealing fixture in the passage along insert corresponding with it of this through hole.

2, according to the described totally enclosed type three-electrode system of claim 1 proving installation, it is characterized in that: described main part is stainless steel or high-strength aluminum alloy material.

3, according to the described totally enclosed type three-electrode system of claim 1 proving installation, it is characterized in that: described main part is cylindrical-shaped structure or triangular column structure.