CN101488587A - Activation apparatus and method for soft packing lithium ionic cell - Google Patents
Activation apparatus and method for soft packing lithium ionic cell Download PDFInfo
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- CN101488587A CN101488587A CNA2008100562906A CN200810056290A CN101488587A CN 101488587 A CN101488587 A CN 101488587A CN A2008100562906 A CNA2008100562906 A CN A2008100562906A CN 200810056290 A CN200810056290 A CN 200810056290A CN 101488587 A CN101488587 A CN 101488587A
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- lithium ion
- packing lithium
- flexible packing
- activation
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Abstract
The invention provides an activating device of a flexible packaging lithium ion battery and an activating method thereof. The battery (1) is provided with a conduit tube and fully injected with electrolyte; the device comprises a battery testing device (2) which is used for activating the battery (1) and connected with the battery (1) as well as a vaccum system (3) which is sealed and communicated with the conduit tube of the battery (1) and is used for pumping the gas inside the battery (1) and controlling the vaccum degree of the interior of the battery (1). The device not only can pump the gas generated in the activation process when the battery is activated, but also ensures the tightness between the positive electrode slices and the negative electrode slices, thus being widely applied in the activation process of the flexible packaging lithium ion battery.
Description
Technical field
The present invention relates to the battery production technical field, relate to a kind of activating apparatus and method of flexible packing lithium ion battery especially.
Background technology
Present lithium-ions battery generally adopts stiff case packing or flexible package, the general metal material that adopts such as stainless steel or aluminium alloy of stiff case, or high-intensity engineering plastics, be characterized in the intensity height, but weight is bigger, varying sized and shape method complexity, especially poor safety performance.And aluminum plastic film or the encapsulation of other flexible materials are adopted in flexible package, are characterized in that the cost of material is low, in light weight, shell dimension flexibly changing, are easy to produce, and the more important thing is that security performance is good, therefore more and more are subjected to the favor of vast battery production producer.
Usually, in making the flexible packing lithium ion battery process, need discharge and recharge activation (or changing into) to the battery of having annotated electrolyte, and necessary when activation: the gas that is produced in the time of 1) can in time discharging cell activation; 2) guarantee in the battery compactness of (there is barrier film the centre) between the positive/negative plate.If the two is too lax, can make then that battery expands in charge and discharge process, internal resistance increases, thereby make cell activation insufficient, influence the performance of battery.In order to overcome the above problems, people carry out following research to the activation method of battery.
Disclose the method that a kind of pressurization changes in CN 1367547A, the battery of this method after with fluid injection is fixed between the flat board of band pressue device, to guarantee the compactness between the pole piece.But there is following defective in this method: 1) owing to the out-of-flatness of electric core own, the metal splint of being installed can not guarantee that the battery each several part is stressed evenly, therefore can cause the current density difference of battery charging and discharging, thereby influence battery performance; The tightness of the metal splint of being installed during 2) owing to every cell activation of very difficult assurance is identical, promptly restive operation, and the consistency of the lithium ion battery that is activated is poor.
Another kind of activation method is provided with headspace as described in the CN 1398012A in the sidepiece or the bottom of battery container, thereby the gas that produces in changing into is stored in this headspace, and then headspace is dismissed.Yet headspace set in this method is for forming by extending the composite membrane shell, and this will certainly improve production cost of products, and the operation of making battery is increased, and has expended great amount of manpower and material resources.
Summary of the invention
The objective of the invention is to overcome the shortcoming that flexible packing lithium ion battery exists in the above-mentioned prior art when activation, thereby providing a kind of is easy to operate and control, the activating apparatus and the method for the flexible packing lithium ion battery of prepared cell high conformity, and this method can be widely used in the activation process of flexible packing lithium ion battery.
To achieve these goals, the present invention adopts following technical scheme:
According to an aspect of the present invention, provide the activating apparatus of a kind of flexible packing lithium ion battery (1), wherein said battery (1) is the battery that has conduit and annotated electrolyte, and described device comprises:
Battery test apparatus (2), it is connected in battery (1), in order to activation battery (1);
Also comprise:
Vacuum system (3), its sealing is communicated in the conduit of described battery (1), in order to extracting the internal gas of described battery (1) out, and controls the inner vacuum degree of described battery (1).
According to another aspect of the present invention, also comprise reservoir (4), it places between described battery (1) and the vacuum system (3), in order to collect the unnecessary electrolyte in the gas bleeding.
The operation principle of this device is, utilizes vacuum system (3) that battery (1) internal gas is extracted out, makes the inside of battery (1) be in negative pressure state, and this moment, the pressure of outside atmosphere made battery (1) each several part stressed evenly; Extract the gas that produces in the activation process simultaneously out, thereby can guarantee the compactness between battery (1) positive/negative plate all the time.
According to a further aspect of the invention, provide the activation method of a kind of flexible packing lithium ion battery (1), wherein said battery (1) is the battery that has conduit and annotated electrolyte, and described method comprises:
1) battery (1) is connected with battery test apparatus (2), the conduit of battery (1) is communicated with vacuum system (3) sealing;
2) extract battery (1) gas inside out;
3) battery (1) is inner vacuum degree control is being lower than the set point of standard atmospheric pressure, simultaneously battery (1) is activated;
4) treat that battery (1) activation finishes, and seals the conduit of described battery (1).
Wherein, in described step 1), reservoir (4) can also be placed between described battery (1) and the vacuum system (3), be used for collecting the unnecessary electrolyte of gas bleeding.
Wherein, in described step 2) in, the vacuum degree set point during battery (1) activation should determine according to the activate request of different lithium ion battery, but preferably between 0.01～0.1MPa.
Compared with prior art, the invention has the advantages that:
1. guaranteed the compactness of inside battery positive/negative plate, and the gas that produces simultaneously can in time extract cell activation out the time, guarantee that cell activation is abundant;
2. battery activates under constant vacuum, makes the current density of battery charging and discharging identical, thereby has improved battery performance;
3. the vacuum degree when activating is easy to control and regulates, thereby has guaranteed consistency of product, is easy to realize suitability for industrialized production;
4. Feng Bi activation process is not exposed in the air gas of unnecessary electrolyte and activation generation, and extraneous simultaneously moisture can not enter battery, so non-environmental-pollution;
Description of drawings
Below, describe embodiments of the invention in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is the activating apparatus schematic diagram of flexible packing lithium ion battery according to an embodiment of the invention.
Embodiment
[embodiment 1]
Make the activating apparatus of a flexible packing lithium ion battery of the present invention with reference to figure 1, and how to use this device in conjunction with this device explanation and carry out the method that flexible packing lithium ion battery activates.
Fig. 1 is the activating apparatus schematic diagram according to flexible packing lithium ion battery of the present invention (1).Wherein said battery (1) is the battery that has liquid injection pipe and annotated electrolyte, and described device comprises battery test apparatus (2), vacuum system (3) and reservoir (4).Described battery test apparatus (2) is connected in the lug of described battery (1), is used to activate described battery (1); Described vacuum system (3) sealing is communicated in the liquid injection pipe of described battery (1), in order to extracting the internal gas of described battery (1) out, and controls the inner vacuum degree of described battery (1); Described reservoir (4) places between described battery (1) and the vacuum system (3), is used for collecting the unnecessary electrolyte of gas bleeding.
Wherein said vacuum system (3) comprising: the electromagnetically operated valve (31) that is communicated with the sealing of reservoir (4) one ends, in order to open or to close the pipeline of bleeding; The vacuum pump (32) that is communicated with electromagnetically operated valve (31) sealing is in order to extract the gas in the described battery (1) out; Be communicated with described reservoir (4) one ends sealing, and the vacuum degree control device (33) that is connected with vacuum pump (32) with described electromagnetically operated valve (31), vacuum degree when being used for measuring and control described battery (1) activation, and control the open and close of described electromagnetically operated valve (31) and vacuum pump (32);
Use said apparatus, the square aluminum plastic film lithium ion battery of having annotated electrolyte is carried out first step activation, this activation method comprises:
1) lug that will annotate the battery (1) of electrolyte is connected with battery test apparatus (2), and the liquid injection pipe of battery (1) is communicated with electromagnetically operated valve (1) sealing;
Vacuum degree when 2) setting battery (1) activation is 0.01MPa, and vacuum degree control device (33) is received pressure signal, and electromagnetically operated valve (31) is opened valve, starts vacuum pump (32), extracts battery (1) internal gas out;
When 3) treating that internal vacuum that vacuum degree control device (33) detects battery (1) is 0.01MPa, electromagnetically operated valve (31) valve-off, vacuum pump (32) quits work, and battery test apparatus (2) begins battery (1) is activated;
4) when generation gas causes internal vacuum to reduce in battery (1) activation, after vacuum degree control device (33) detects, electromagnetically operated valve (31) is opened valve again, start vacuum pump (32), this device is started working again, activates thereby battery (1) is remained under the constant vacuum 0.01MPa;
5) treat that battery (1) activation finishes, and seals the liquid injection pipe of described battery (1).
Should be appreciated that, though the vacuum system described in the present embodiment (3) comprises electromagnetically operated valve (31), vacuum pump (32) and vacuum degree control device (33), can also be substituted by other vacuum systems that have identical function or an effect with this vacuum system (3) in other embodiments.In addition, for the person of ordinary skill of the art, should be appreciated that described flexible packing lithium ion battery (1) can also be the battery of other flexible shells packing, and its shape and capacity are for arbitrarily; Described liquid injection pipe can also be other conduit, but liquid injection pipe preferably; Simultaneously, should also be appreciated that described activation can also be the second step activation to lithium ion battery, and according to the activate request of different lithium ion battery, the vacuum degree value when setting activation is the value that is lower than standard atmospheric pressure, preferably 0.01～0.1MPa.
[embodiment 2]
Press the activating apparatus that embodiment 1 makes a flexible packing lithium ion battery, different is not have liquid filling bottle (4), and all the other are identical with embodiment 1.The cylindrical aluminium plastic film lithium ion battery of having annotated electrolyte is carried out the activation of second step, and the vacuum degree when different is setting battery (1) activation is 0.1MPa.
Although made specific descriptions for the present invention with reference to the above embodiments, but for the person of ordinary skill of the art, should be appreciated that and can make amendment or improve based on content disclosed by the invention, and these modifications and improving all within the spirit and scope of the present invention.
Claims (9)
1. the activating apparatus of a flexible packing lithium ion battery (1), wherein said battery (1) is for having conduit and having annotated the battery of electrolyte, and described device comprises:
Battery test apparatus (2), it is connected in battery (1), in order to activation battery (1);
It is characterized in that, also comprise:
Vacuum system (3), its sealing is communicated in the conduit of described battery (1), in order to extracting the internal gas of described battery (1) out, and controls the inner vacuum degree of described battery (1).
2. the activating apparatus of flexible packing lithium ion battery as claimed in claim 1 (1) is characterized in that, also comprises reservoir (4), and it places between described battery (1) and the vacuum system (3), is used for collecting the unnecessary electrolyte of gas bleeding.
3. the activating apparatus of flexible packing lithium ion battery as claimed in claim 1 or 2 (1) is characterized in that, described vacuum system (3) comprising: electromagnetically operated valve (31), vacuum pump (32) and vacuum degree control device (33).
4. the activating apparatus of flexible packing lithium ion battery as claimed in claim 1 or 2 (1) is characterized in that, described conduit is a liquid injection pipe.
5. the activation method of a flexible packing lithium ion battery (1), wherein said battery (1) is for having conduit and having annotated the battery of electrolyte, and described method comprises:
1) battery (1) is connected with battery test apparatus (2), the conduit of battery (1) is communicated with vacuum system (3) sealing;
2) extract battery (1) gas inside out;
3) battery (1) is inner vacuum degree control is being lower than the set point of standard atmospheric pressure, simultaneously battery (1) is activated;
4) treat that battery (1) activation finishes, and seals the conduit of described battery (1).
6. the activation method of flexible packing lithium ion battery as claimed in claim 5 (1) is characterized in that: in described step 1) described reservoir (4) is placed between described battery (1) and the vacuum system (3), be used for collecting the unnecessary electrolyte of gas bleeding.
7. as the activation method of claim 5 or 6 described flexible packing lithium ion batteries (1), it is characterized in that: in described step 3), the vacuum degree set point of described battery (1) inside is between 0.01～0.1MPa.
8. as the activation method of claim 5 or 6 described flexible packing lithium ion batteries (1), it is characterized in that in described step 1), described vacuum system (3) comprising: electromagnetically operated valve (31), vacuum pump (32) and vacuum degree control device (33).
9. as the activation method of claim 5 or 6 described flexible packing lithium ion batteries (1), it is characterized in that in described step 1), described conduit is a liquid injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100562906A CN101488587A (en) | 2008-01-16 | 2008-01-16 | Activation apparatus and method for soft packing lithium ionic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100562906A CN101488587A (en) | 2008-01-16 | 2008-01-16 | Activation apparatus and method for soft packing lithium ionic cell |
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| Publication Number | Publication Date |
|---|---|
| CN101488587A true CN101488587A (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100562906A Withdrawn CN101488587A (en) | 2008-01-16 | 2008-01-16 | Activation apparatus and method for soft packing lithium ionic cell |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
| CN102361098A (en) * | 2011-10-31 | 2012-02-22 | 成都银鑫新能源有限公司 | Lithium ion battery production and formation device in atmospheric environment |
| CN102456861A (en) * | 2011-12-21 | 2012-05-16 | 万向电动汽车有限公司 | Exhaust device for flexibly-packaged lithium ion battery |
| CN103094621A (en) * | 2013-01-30 | 2013-05-08 | 浙江超威创元实业有限公司 | Lithium ion battery formation method and device |
| US20160164098A1 (en) * | 2013-06-28 | 2016-06-09 | Konica Minolta, Inc. | Flexible secondary battery, electronic device |
| CN107359299A (en) * | 2016-05-10 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Gas production extraction device |
| CN111786042A (en) * | 2020-07-06 | 2020-10-16 | 湖北亿纬动力有限公司 | Method for improving formation fluid loss amount and application thereof |
-
2008
- 2008-01-16 CN CNA2008100562906A patent/CN101488587A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299385A (en) * | 2011-07-29 | 2011-12-28 | 南京双登科技发展研究院有限公司 | Soft package lithium iron phosphate power battery initial charge formation method |
| CN102361098A (en) * | 2011-10-31 | 2012-02-22 | 成都银鑫新能源有限公司 | Lithium ion battery production and formation device in atmospheric environment |
| CN102456861A (en) * | 2011-12-21 | 2012-05-16 | 万向电动汽车有限公司 | Exhaust device for flexibly-packaged lithium ion battery |
| CN103094621A (en) * | 2013-01-30 | 2013-05-08 | 浙江超威创元实业有限公司 | Lithium ion battery formation method and device |
| US20160164098A1 (en) * | 2013-06-28 | 2016-06-09 | Konica Minolta, Inc. | Flexible secondary battery, electronic device |
| CN107359299A (en) * | 2016-05-10 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Gas production extraction device |
| CN111786042A (en) * | 2020-07-06 | 2020-10-16 | 湖北亿纬动力有限公司 | Method for improving formation fluid loss amount and application thereof |
| CN111786042B (en) * | 2020-07-06 | 2021-11-23 | 湖北亿纬动力有限公司 | Method for improving formation fluid loss amount and application thereof |
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Open date: 20090722 |