CN211042552U - Device for monitoring internal pressure change of lithium battery - Google Patents
Device for monitoring internal pressure change of lithium battery Download PDFInfo
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- CN211042552U CN211042552U CN201921720677.7U CN201921720677U CN211042552U CN 211042552 U CN211042552 U CN 211042552U CN 201921720677 U CN201921720677 U CN 201921720677U CN 211042552 U CN211042552 U CN 211042552U
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Abstract
The utility model discloses a device for monitoring lithium cell internal pressure changes, include: the battery testing device comprises an outer shell, wherein a chamber for placing or taking out a battery to be tested and springs which are circumferentially arranged around the chamber are arranged in the outer shell, and one end of each spring, which is far away from the center of the chamber, is provided with a pressure sensor which is in contact with the spring; each pressure sensor is fixed on the outer shell. The utility model discloses can realize carrying out real-time supervision to the inside different position pressure changes of battery.
Description
Technical Field
The utility model relates to a battery manufacturing technology field especially relates to a device for monitoring lithium cell internal pressure changes.
Background
In the formation, capacity grading and circulation processes of the lithium ion battery, redox side reaction occurs between the electrode and the electrolyte, a large amount of gas is generated, the internal pressure of the battery is increased, the shell is expanded and deformed, and once the internal pressure of the battery is too high, the internal pressure breaks through the bearing limit of the aluminum shell and is instantaneously cracked, so that potential safety hazards such as liquid leakage, combustion, explosion and the like can be brought. For gas generation and swelling of the lithium ion battery, the internal pressure of the battery is usually reduced through a pressure release valve, but the method has delay and cannot carry out real-time effective continuous monitoring on the internal pressure change of the lithium ion battery so as to eliminate potential safety hazards in time.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides a device for monitoring lithium cell internal pressure changes to change to carry out real-time supervision to battery internal pressure.
The utility model provides a device for monitoring lithium cell internal pressure changes, include: the battery testing device comprises an outer shell, wherein a chamber for placing or taking out a battery to be tested and springs which are circumferentially arranged around the chamber are arranged in the outer shell, and one end of each spring, which is far away from the center of the chamber, is provided with a pressure sensor which is in contact with the spring; each pressure sensor is fixed on the outer shell.
Preferably, one end of the chamber is provided with a first through hole for leading out the tab, and one side of the chamber, which is far away from the first through hole, is provided with a second through hole for leading out the tab.
Preferably, the spring is provided with a plurality of layers in a height direction of the chamber.
Preferably, the outer casing comprises a first casing and a second casing which are detachably assembled, the first casing is provided with a first accommodating cavity, the second casing is provided with a second accommodating cavity, and when the first casing and the second casing are in an assembled state, the first accommodating cavity and the second accommodating cavity are mutually matched to form a cavity.
Preferably, one side of the first shell and one side of the second shell are connected through a bolt, and the sides of the first shell and the second shell, which are far away from the bolt, are connected through a buckle.
Preferably, the outer casing includes first casing and second casing, first casing has the first chamber that holds, and the second casing has the second and holds the chamber, and first casing is articulated with one side of second casing, and its articulated one side joint is kept away from to the two, and when first casing and second casing keep away from its articulated one side joint, first chamber and the second chamber of holding mutually supports in order to form the cavity.
Preferably, the first shell and the second shell are clamped by a buckle at one side far away from the hinged side of the first shell and the second shell.
Preferably, the cavity is the cylindricality chamber, and the cavity is inside to be equipped with first arc, second arc, third arc and the fourth arc with shell body sliding connection, wherein: the first arc-shaped plate and the second arc-shaped plate are oppositely arranged on two sides of the central line of the cavity, are coaxial with the cavity and are respectively abutted against the pressure sensor; the third arc-shaped plate is positioned on one side of the first arc-shaped plate close to the second arc-shaped plate, and the fourth arc-shaped plate is positioned on one side of the second arc-shaped plate close to the first arc-shaped plate; each spring is respectively arranged between the first arc-shaped plate and the third arc-shaped plate and between the second arc-shaped plate and the fourth arc-shaped plate and respectively corresponds to the corresponding pressure sensor, and two ends of the spring positioned between the first arc-shaped plate and the third arc-shaped plate are respectively abutted against and fixed; the two ends of the spring between the second arc-shaped plate and the fourth arc-shaped plate are respectively abutted and fixed.
Preferably, the pressure sensor further comprises a display connected with each pressure sensor for displaying the pressure value of each pressure sensor.
Preferably, the pressure sensor further comprises a data collector for converting the pressure signal into an electrical signal, and each pressure sensor is connected with the data collector.
The utility model discloses in, through the inside spring that sets up the cavity that can supply the battery that awaits measuring to put into or take out and encircle the cavity in the shell body to one end at the spring sets up pressure sensor, thereby the battery that the messenger put into the cavity both can keep pressing from both sides tightly and fixed under the restriction of spring, and can promote spring extrusion pressure sensor automatically when the inflation that charges, in order through utilizing pressure sensor alright realize carrying out real-time supervision to the inside different position pressure changes of battery.
Drawings
Fig. 1 is a schematic structural diagram of a device for monitoring pressure change inside a lithium battery according to the present invention.
Detailed Description
The technical solution of the present invention will be described in detail by the following embodiments.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a device for monitoring pressure change inside a lithium battery according to the present invention.
Referring to fig. 1, the utility model provides a device for monitoring lithium cell internal pressure changes, include: the battery testing device comprises an outer shell 1, wherein a chamber for placing or taking out a battery to be tested and springs 2 which are arranged around the circumference of the chamber are arranged in the outer shell 1, and one end of each spring 2, which is far away from the center of the chamber, is provided with a pressure sensor 3 which is in contact with the spring 2; each pressure sensor 3 is fixed on the outer shell 1, so that the pressure sensor 3 can be pressed by pushing the spring 2 after the battery put into the chamber is charged and expanded, and the internal pressure of the battery during charging can be monitored by using the pressure sensor 3.
According to the above, the utility model discloses a spring 2 that can supply the cavity that awaits measuring battery put into or take out and encircle the cloth around the cavity is set up to 1 inside the casing to one end at spring 2 sets up pressure sensor 3, thereby the battery that the messenger put into the cavity both can keep pressing from both sides tightly and fixed under spring 2's restriction, and can promote spring 2 extrusion pressure sensor 3 automatically when the inflation that charges, in order through utilizing pressure sensor 3 alright realize carrying out real-time supervision to the inside different position pressure changes of battery.
In this embodiment, one end of the cavity is provided with a first through hole for leading out the tab, and one side of the cavity, which is far away from the first through hole, is provided with a second through hole for leading out the tab, so that when the battery is tested, the positive/negative tab of the battery can be extended out from the first and second through holes, thereby facilitating the connection into the charging circuit.
In this embodiment, along the height direction of the chamber, the spring 2 is provided with multiple layers, so as to conveniently monitor the pressure of different height parts of the battery.
In this embodiment, the cavity is the cylindricality chamber, and the cavity is inside to be equipped with 1 sliding connection's of shell body first arc 5, second arc 6, third arc 7 and fourth arc 8, wherein: the first arc-shaped plate 5 and the second arc-shaped plate 6 are oppositely arranged on two sides of the central line of the cavity and are coaxial with the cavity, and the outer walls of the first arc-shaped plate 5 and the second arc-shaped plate 6 are respectively abutted against the pressure sensor 3; the third arc-shaped plate 7 is positioned on one side of the first arc-shaped plate 5 close to the second arc-shaped plate 6, and the fourth arc-shaped plate 8 is positioned on one side of the second arc-shaped plate 6 close to the first arc-shaped plate 5; each spring 2 is respectively arranged between the first arc-shaped plate 5 and the third arc-shaped plate 7, and between the second arc-shaped plate 6 and the fourth arc-shaped plate 8, and respectively corresponds to the corresponding pressure sensor 3, and two ends of the spring 2 between the first arc-shaped plate 5 and the third arc-shaped plate 7 are respectively abutted against and fixed; the two ends of the spring 2 between the second arc-shaped plate 6 and the fourth arc-shaped plate 8 are respectively abutted and fixed. The structure can effectively prevent the cylindrical battery from sliding and loosening in the test process, and has the advantages of simple structure, convenient operation and effective shortening of the time of the upper clamp and the lower clamp.
In this embodiment, the outer casing 1 includes a first casing 11 and a second casing 12, the first casing 11 has a first accommodating cavity, the second casing 12 has a second accommodating cavity, the first casing 11 and the second casing 12 are detachably connected or the first casing 11 is hinged to one side of the second casing 12, the first casing 11 and the second casing 12 are clamped away from the hinged side thereof, and when the first casing 11 and the second casing 12 are in an assembled state or when the first casing 11 and the second casing 12 are clamped away from the hinged side thereof, the first accommodating cavity and the second accommodating cavity are mutually matched to form a cavity. The battery can be conveniently put in and taken out by the arrangement of the structure, and the clamping effect on the battery can be ensured.
In this embodiment, the first housing 11 and the second housing 12 are detachably connected by a bolt, and the sides thereof away from the bolt are connected by a buckle 4.
In this embodiment, the first housing 11 and the second housing 12 are clamped by the buckle 4 at a side away from the hinge side.
In this embodiment, the pressure sensor system further comprises a data collector for converting the pressure signal into an electrical signal, and each pressure sensor 3 is connected 9 with the data collector, so that the received pressure signal is converted into the electrical signal by using the data collector connection 9, and a later worker can conveniently control the on/off of the battery charging according to the strength of the electrical signal.
Further, a display connected to each pressure sensor 3 for displaying the pressure value of each pressure sensor 3 is also provided.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. An apparatus for monitoring pressure changes within a lithium battery, comprising: the battery testing device comprises an outer shell (1), wherein a chamber for placing or taking out a battery to be tested and springs (2) arranged around the circumference of the chamber are arranged in the outer shell (1), and one end of each spring (2) far away from the center of the chamber is provided with a pressure sensor (3) in contact with the spring; each pressure sensor (3) is fixed on the outer shell (1).
2. The apparatus as claimed in claim 1, wherein the chamber has a first through hole for the tab to be led out at one end thereof, and a second through hole for the tab to be led out at a side thereof away from the first through hole.
3. Device for monitoring the pressure variations inside a lithium battery according to claim 1, characterized in that the spring (2) is provided with multiple layers in the height direction of the chamber.
4. The device for monitoring the pressure change inside the lithium battery according to claim 1, wherein the outer case (1) comprises a first case (11) and a second case (12) which are detachably assembled, the first case (11) has a first accommodating chamber, the second case (12) has a second accommodating chamber, and the first accommodating chamber and the second accommodating chamber cooperate with each other to form a chamber when the first case (11) and the second case (12) are in an assembled state.
5. The device for monitoring the pressure change inside the lithium battery according to claim 4, wherein the first shell (11) is connected with one side of the second shell (12) through a bolt, and the sides of the first shell and the second shell, which are far away from the bolt, are connected through a buckle (4).
6. The device for monitoring the internal pressure change of the lithium battery as claimed in claim 1, wherein the outer shell (1) comprises a first shell (11) and a second shell (12), the first shell (11) is provided with a first accommodating cavity, the second shell (12) is provided with a second accommodating cavity, the first shell (11) is hinged with one side of the second shell (12), the first shell and the second shell are clamped far away from the hinged side, and when the first shell (11) and the second shell (12) are clamped far away from the hinged side, the first accommodating cavity and the second accommodating cavity are matched with each other to form a cavity.
7. Device for monitoring the pressure variations inside a lithium battery according to claim 6, characterized in that the first housing (11) is snap-fitted with a snap (4) to the side of the second housing (12) remote from its hinged side.
8. Device for monitoring the pressure variations inside a lithium battery according to claim 1, characterized in that the chamber is a cylindrical chamber, inside which there are a first arc (5), a second arc (6), a third arc (7) and a fourth arc (8) that are slidably connected to the outer casing (1), wherein: the first arc-shaped plate (5) and the second arc-shaped plate (6) are oppositely arranged on two sides of the central line of the cavity and are coaxial with the cavity, and the outer walls of the first arc-shaped plate (5) and the second arc-shaped plate (6) are respectively abutted against the pressure sensor (3); the third arc-shaped plate (7) is positioned on one side of the first arc-shaped plate (5) close to the second arc-shaped plate (6), and the fourth arc-shaped plate (8) is positioned on one side of the second arc-shaped plate (6) close to the first arc-shaped plate (5); each spring (2) is respectively arranged between the first arc-shaped plate (5) and the third arc-shaped plate (7) and between the second arc-shaped plate (6) and the fourth arc-shaped plate (8) and respectively corresponds to the corresponding pressure sensor (3), and two ends of the spring (2) positioned between the first arc-shaped plate (5) and the third arc-shaped plate (7) are respectively abutted against and fixed; the two ends of the spring (2) between the second arc-shaped plate (6) and the fourth arc-shaped plate (8) are respectively abutted and fixed.
9. The device for monitoring the pressure variations inside a lithium battery according to any one of claims 1 to 8, further comprising a display connected to each pressure sensor (3) for displaying the pressure value of each pressure sensor (3).
10. Device for monitoring the pressure variations inside a lithium battery according to any of claims 1-8, further comprising a data collector for converting pressure signals into electrical signals, each pressure sensor (3) being connected (9) to the data collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921720677.7U CN211042552U (en) | 2019-10-14 | 2019-10-14 | Device for monitoring internal pressure change of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921720677.7U CN211042552U (en) | 2019-10-14 | 2019-10-14 | Device for monitoring internal pressure change of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042552U true CN211042552U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921720677.7U Active CN211042552U (en) | 2019-10-14 | 2019-10-14 | Device for monitoring internal pressure change of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211042552U (en) |
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2019
- 2019-10-14 CN CN201921720677.7U patent/CN211042552U/en active Active
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