CN206378241U - Compression testing device in a kind of lithium ion battery with hard shell - Google Patents
Compression testing device in a kind of lithium ion battery with hard shell Download PDFInfo
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- CN206378241U CN206378241U CN201720076319.1U CN201720076319U CN206378241U CN 206378241 U CN206378241 U CN 206378241U CN 201720076319 U CN201720076319 U CN 201720076319U CN 206378241 U CN206378241 U CN 206378241U
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Abstract
The utility model is related to compression testing device in a kind of lithium ion battery with hard shell.Including welding the sealed cell formed, in addition to the air pressure transmitter being connected with data acquisition unit by cover plate assembly and battery container, described air pressure transmitter is connected by connector with sealed cell inside.As shown from the above technical solution, the utility model is by setting the air pressure transmitter connected with sealed cell, it may be implemented in Battery formation, loop test and overcharge the internal pressure and gas production of real-time measurement battery during safety test etc., with the characteristics of simple in construction, easy to operate, data precision is high, reliability is high.
Description
Technical field
The utility model is related to field of lithium ion battery, and in particular to compression testing device in a kind of lithium ion battery with hard shell.
Background technology
Lithium ion battery increasingly becomes more meticulous by development for many years to its research.Formation process is lithium ion battery
Initial charge behavior, has the electrochemistry occurred in particularly important influence, formation process anti-the chemical property of whole battery
Should be extremely complex, it is difficult which which corresponding reaction of stage distinguished at present, but its unified external manifestation is inevitable real estate
Raw certain gas, inner pressure of battery changes；The cycle life of battery is an important indicator of lithium ion battery, and battery exists
Gas will necessarily be produced in long-term cyclic process, causes inner pressure of battery to increase；Battery in abuse conditions, is particularly being overcharged
In the case of, battery can produce a large amount of gases, cause inner pressure of battery to sharply increase, and battery occurs abnormal bulging and even exploded.So,
Internal pressure change to battery during each stage of battery forming process, circulating battery test process and over-charging of battery is divided
Analysis will become have very much directive significance.Patent 201420827396.2 proposes a kind of aerogenesis for testing duricrust battery forming process
Test device is measured, using the method for export inside battery gas, cell internal environment is destroyed, measurement error is big, and can not answer
For in duricrust circulating battery process and overcharging gas production test in test process.
Utility model content
The purpose of this utility model is to provide compression testing device in a kind of lithium ion battery with hard shell, and the test device is not
In the case of changing inside battery air pressure, duricrust battery can be real-time and accurately determined in chemical conversion, loop test and peace is overcharged
Inner pressure of battery and gas production in full test process.
To achieve the above object, the utility model employs following technical scheme：Including by cover plate assembly and battery container
The sealed cell formed, in addition to the air pressure transmitter being connected with data acquisition unit are welded, described air pressure transmitter passes through even
Fitting inside sealed cell with connecting.
Described connector is arranged on cover plate assembly, and described connector respectively with air pressure transmitter and cover plate assembly
Mutually seal.
Described connector is threadedly coupled with being respectively adopted between air pressure transmitter and cover plate assembly, and junction uses spiral shell
Line adhesive sealing.
The inside of the connector is provided with step-like through hole, and described through hole is by the first hole of major diameter and minor diameter
Second hole is constituted, and the first described hole is provided with the internal thread being connected with air pressure transmitter.
Described connector is inverted boss structure, by the first cylinder and the second cylinder of minor diameter of major diameter
Composition, the outer surface of second cylinder is provided with the external screw thread being connected with cover plate assembly.
The internal thread is 8~14mm with externally threaded nominal diameter.
At the first described hole equipped with its mutually sealed rubber seal.
As shown from the above technical solution, the utility model, can be real by setting the air pressure transmitter connected with sealed cell
Present Battery formation, loop test and the internal pressure and gas production for overcharging real-time measurement battery during safety test etc.,
With the characteristics of simple in construction, easy to operate, data precision is high, reliability is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model connector.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
Compression testing device in a kind of lithium ion battery with hard shell as shown in Figure 1, including by cover plate assembly 1 and battery container 2
The sealed cell 3 formed, in addition to the air pressure transmitter 5 being connected with data acquisition unit 4 are welded, air pressure transmitter 5 passes through data
Connecting line is connected with data acquisition unit 4, and air pressure transmitter 5 is connected by connector 6 with the inside of sealed cell 3.
Further, connector 6 is arranged on cover plate assembly 1, and connector 6 respectively with air pressure transmitter 5 and cover plate group
Part 1 is mutually sealed.
Further, it is respectively adopted and is threadedly coupled between connector 6 and air pressure transmitter 5 and cover plate assembly 1, and junction
Using screw thread adhesive sealing.
Further, as shown in Fig. 2 the inside of connector 6 is provided with step-like through hole 61, through hole 61 is by the of major diameter
One hole 611 and the second hole 612 of minor diameter are constituted, and the first hole 611 is provided with the internal thread being connected with air pressure transmitter 5.More
Further, at the first hole 611 equipped with its mutually sealed rubber seal., can be first by connection in cell fabrication processes
The cover plate assembly 1 of part and battery is connected, and is blocked the first hole of connector 6 using rubber seal, so as to reduce device to life
The influence of equipment is produced, the automated production of battery is realized；When needing test internal pressure, then rubber seal is removed, air pressure is become
Device 5 is sent to be connected with the first hole 611 of connector 6 using thread seal.
Further, connector 6 be inverted boss structure, by major diameter the first cylinder 62 and minor diameter second
Cylinder 63 is constituted, and the outer surface of the second cylinder 63 is provided with the external screw thread being connected with cover plate assembly 1.
Further, internal thread and externally threaded nominal diameter are 8~14mm, and the size range fully takes into account cover plate group
The size of part 1.
The beneficial effects of the utility model are：1）Sealedly design can realize Battery formation, circulation to the utility model
Test and overcharge in security testing process and to completely cut off completely with environment, while not changing the air pressure inside of battery, truly reflect battery
Air pressure change；2）Thread connecting mode can quickly and easily realize the connection of test device；3）Data acquisition unit can be real
The automatic record of existing data real-time continuous, greatly reduces workload；4）Air pressure transmitter, which can be realized, to be melted into, is following to battery
Ring test and the accurate measure for overcharging the process inner pressure of battery such as safety test, for the design of battery, research and development, improvement, battery
Character surveillance and battery performance test in production process all have great importance.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, on the premise of the utility model design spirit is not departed from, and those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of the utility model claims determination
In the range of.
Claims (7)
1. compression testing device in a kind of lithium ion battery with hard shell, it is characterised in that：Including by cover plate assembly（1）And battery container
（2）Weld the sealed cell formed（3）, in addition to and data acquisition unit（4）Connected air pressure transmitter（5）, described air pressure
Transmitter（5）Pass through connector（6）With sealed cell（3）Inside connection.
2. compression testing device in lithium ion battery with hard shell according to claim 1, it is characterised in that：Described connector
（6）It is arranged on cover plate assembly（1）On, and described connector（6）Respectively with air pressure transmitter（5）And cover plate assembly（1）Xiang Mi
Envelope.
3. compression testing device in lithium ion battery with hard shell according to claim 2, it is characterised in that：Described connector
（6）With air pressure transmitter（5）And cover plate assembly（1）Between be respectively adopted threaded connection, and junction uses screw thread adhesive sealing.
4. compression testing device in lithium ion battery with hard shell according to claim 2, it is characterised in that：The connector（6）
Inside be provided with step-like through hole（61）, described through hole（61）By the first hole of major diameter（611）And the second of minor diameter
Hole（612）Composition, the first described hole（611）It is provided with and air pressure transmitter（5）The internal thread being connected.
5. compression testing device in lithium ion battery with hard shell according to claim 4, it is characterised in that：Described connector
（6）For inverted boss structure, by the first cylinder of major diameter（62）And the second cylinder of minor diameter（63）Composition, it is described
Second cylinder（63）Outer surface be provided with and cover plate assembly（1）The external screw thread being connected.
6. compression testing device in lithium ion battery with hard shell according to claim 5, it is characterised in that：The internal thread with it is outer
The nominal diameter of screw thread is 8~14mm.
7. compression testing device in lithium ion battery with hard shell according to claim 4, it is characterised in that：The first described hole
（611）Place equipped with its mutually sealed rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076319.1U CN206378241U (en) | 2017-01-18 | 2017-01-18 | Compression testing device in a kind of lithium ion battery with hard shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076319.1U CN206378241U (en) | 2017-01-18 | 2017-01-18 | Compression testing device in a kind of lithium ion battery with hard shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206378241U true CN206378241U (en) | 2017-08-04 |
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ID=59400263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720076319.1U Active CN206378241U (en) | 2017-01-18 | 2017-01-18 | Compression testing device in a kind of lithium ion battery with hard shell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490417A (en) * | 2017-07-25 | 2017-12-19 | 合肥国轩高科动力能源有限公司 | A kind of lithium-ion-power cell chemical conversion stage gas production rate test device and method |
| CN110864758A (en) * | 2019-11-12 | 2020-03-06 | 桐乡乐维新材料有限公司 | Device and method for detecting gas production rate in graphene battery |
| CN111190117A (en) * | 2020-01-08 | 2020-05-22 | 合肥国轩高科动力能源有限公司 | Battery cell exhaust detection method and device |
-
2017
- 2017-01-18 CN CN201720076319.1U patent/CN206378241U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490417A (en) * | 2017-07-25 | 2017-12-19 | 合肥国轩高科动力能源有限公司 | A kind of lithium-ion-power cell chemical conversion stage gas production rate test device and method |
| CN110864758A (en) * | 2019-11-12 | 2020-03-06 | 桐乡乐维新材料有限公司 | Device and method for detecting gas production rate in graphene battery |
| CN110864758B (en) * | 2019-11-12 | 2020-12-18 | 桐乡乐维新材料有限公司 | Device and method for detecting gas production rate in graphene battery |
| CN111190117A (en) * | 2020-01-08 | 2020-05-22 | 合肥国轩高科动力能源有限公司 | Battery cell exhaust detection method and device |
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