CN220602778U - Expansion detection device for battery - Google Patents
Expansion detection device for battery Download PDFInfo
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- CN220602778U CN220602778U CN202321482032.0U CN202321482032U CN220602778U CN 220602778 U CN220602778 U CN 220602778U CN 202321482032 U CN202321482032 U CN 202321482032U CN 220602778 U CN220602778 U CN 220602778U
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- side wall
- expansion
- battery cell
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 78
- 238000006073 displacement reaction Methods 0.000 claims description 31
- 239000010409 thin film Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 4
- 238000007405 data analysis Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses an expansion detection device for a battery, which comprises: a first clamping plate, wherein the first clamping plate is provided with a first side wall and a second side wall which are opposite; the second clamping plate is provided with a third side wall and a fourth side wall, the first side wall is opposite to the third side wall, and a clamping space for clamping the battery cell is formed between the first side wall and the third side wall; the pressure detection unit is arranged on the first side wall and/or the third side wall and is used for detecting the expansion force of the battery cell; the elastic piece is arranged between the first clamping plate and the second clamping plate and/or is arranged on at least one of the second side wall and the fourth side wall; because the elastic piece supports and presses or elastically pulls the clamping plates, the clamping force of the first clamping plate and the second clamping plate can be enabled to act on the battery cell more uniformly, and the expansion force of the battery cell can be enabled to act on the pressure detection unit more uniformly, so that the detection accuracy of the expansion force of the pressure detection unit on the battery cell can be improved.
Description
Technical Field
The utility model relates to the technical field of battery cell detection, in particular to an expansion detection device for a battery.
Background
With the development of new energy technology, the lithium battery industry has also been rapidly developed. The lithium ion battery has the advantages of high voltage, high specific energy, multiple times of recycling, long storage time and the like, is widely applied to portable electronic equipment, and is also applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the use performance and the safety requirements on the lithium ion battery are higher and higher. The battery core of the lithium battery is continuously expanded due to the positive and negative electrode materials in the cyclic charge and discharge process, the thickness of the battery core can be changed, and meanwhile, larger expansion force can be generated, and the data are an important index for evaluating the safety performance of the battery and are also important parameters for structural strength design of a battery module.
The existing expansion detection device needs to clamp the battery cell by using a clamp, and the expansion force of the battery cell is tested in the charging and discharging process of the battery cell, however, the clamp force of the clamp of the existing expansion detection device to the battery cell cannot uniformly act on the battery cell, so that the expansion force detection of the battery cell is not accurate enough easily.
Disclosure of Invention
In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present utility model provides an expansion detecting device for a battery, which aims to solve the problem that the clamping force of the clamp of the existing expansion detecting device to the battery cell cannot uniformly act on the battery cell.
The utility model adopts the technical proposal for solving the problems that:
an expansion detection device for a battery, comprising: a first cleat having opposed first and second sidewalls; the second clamping plate is provided with a third side wall and a fourth side wall, the first side wall is opposite to the third side wall, and a clamping space for clamping the battery cell is formed between the first side wall and the third side wall; the pressure detection unit is arranged on the first side wall and/or the third side wall and is used for detecting the expansion force of the battery cell; and the elastic piece is arranged between the first clamping plate and the second clamping plate, and/or is arranged on at least one of the second side wall and the fourth side wall.
According to the expansion detection device for the battery, disclosed by the utility model, the first clamping plate and the second clamping plate can form stable clamping on the battery core, so that the pressure detection unit can detect the expansion force of the battery core when the battery core expands, and the elastic piece is arranged, on one hand, the expansion force condition and the expansion displacement condition of the battery core can be conveniently and quickly recorded by the elastic piece in the expansion process of the battery core, and on the other hand, the clamping force of the first clamping plate and the second clamping plate can be uniformly acted on the battery core due to the elastic pressing or the elastic pulling of the elastic piece, and the expansion force of the battery core can be uniformly acted on the pressure detection unit, so that the detection accuracy of the expansion force of the battery core by the pressure detection unit can be improved.
According to some embodiments of the utility model, the expansion detecting device further comprises a third clamping plate, the first clamping plate, the second clamping plate and the third clamping plate are sequentially arranged and distributed at intervals, and the elastic piece is arranged between the fourth side wall and the third clamping plate.
According to some embodiments of the utility model, the expansion detecting device further comprises a fourth clamping plate, the first clamping plate, the second clamping plate and the third clamping plate are sequentially arranged at intervals, the elastic piece is arranged between the second side wall and the fourth clamping plate, and the elastic piece is arranged between the fourth side wall and the third clamping plate.
According to some embodiments of the utility model, the elastic members are provided in a plurality, the elastic members are uniformly connected to the second clamping plate, and/or the elastic members are uniformly connected to the first clamping plate.
According to some embodiments of the utility model, the plurality of elastic members are uniformly connected to the periphery of the second clamping plate, and/or the plurality of elastic members are uniformly connected to the periphery of the first clamping plate.
According to some embodiments of the utility model, the expansion detecting device further comprises a plurality of fasteners, the fasteners are inserted into the first clamping plate, the second clamping plate and the third clamping plate, the plurality of fasteners are uniformly distributed, and the plurality of elastic pieces are sleeved on the plurality of fasteners in a one-to-one correspondence manner.
According to some embodiments of the utility model, the pressure detection unit is a membrane pressure sensor.
According to some embodiments of the utility model, the expansion detecting device further comprises a displacement detecting unit provided between the second clamping plate and the third clamping plate.
According to some embodiments of the present utility model, the displacement detection unit is a laser displacement sensor, and the laser displacement sensor includes a transmitting end and a receiving end that are disposed opposite to each other; the transmitting end is arranged on the second clamping plate, the receiving end is arranged on the third clamping plate, or the transmitting end is arranged on the third clamping plate, and the receiving end is arranged on the second clamping plate.
According to some embodiments of the utility model, the first clamping plate and the second clamping plate are vertically disposed.
In summary, the expansion detection device for the battery disclosed by the utility model has at least the following beneficial technical effects:
1) In the process of expanding the battery cell, the elastic piece can be utilized to record the expansion force condition and the expansion displacement condition of the battery cell conveniently and rapidly;
2) The clamping force of the first clamping plate and the second clamping plate can be enabled to act on the battery cell more uniformly, and the expansion force of the battery cell can be enabled to act on the pressure detection unit more uniformly, so that the detection accuracy of the pressure detection unit on the expansion force of the battery cell can be improved;
3) The pressure detection units and the elastic pieces are connected to the two opposite sides of the second clamping plate in a one-to-one correspondence manner, so that the expansion force of the battery cell can be more uniformly applied to the pressure detection units, and the detection accuracy of the pressure detection units on the expansion force of the battery cell can be further improved;
4) The elastic pieces are uniformly connected to the second clamping plate, and/or the elastic pieces are uniformly connected to the first clamping plate, so that the clamping force of the first clamping plate and the second clamping plate can further uniformly act on the battery cell, and the expansion force of the battery cell can further uniformly act on the pressure detection unit;
5) The expansion force detection and expansion displacement detection dual-function device has the advantages of simple structure and small occupied space.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.
Wherein the reference numerals have the following meanings:
1-first clamping plate, 11-first side wall, 12-second side wall, 2-second clamping plate, 21-third side wall, 22-fourth side wall, 3-third clamping plate, 4-pressure detection unit, 5-elastic piece, 6-fourth clamping plate, 7-fastener, 8-displacement detection unit, 81-transmitting end, 82-receiving end, 9-electric core.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The utility model is described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the present utility model discloses an expansion detecting device for a battery, comprising a first clamping plate 1, a second clamping plate 2, a pressure detecting unit 4 and an elastic member 5; the first clamping plate 1 is provided with a first side wall 11 and a second side wall 12 which are opposite, the second clamping plate 2 is provided with a third side wall 21 and a fourth side wall 22 which are opposite, and a clamping space for clamping the battery cell 9 is formed between the first side wall 11 and the third side wall 21; the pressure detection unit 4 is arranged on the first side wall 11 and/or the third side wall 21, and the pressure detection unit 4 is used for detecting the expansion force of the battery cell 9; the elastic member 5 is disposed on the fourth side wall 22, and when the battery cell 9 expands, the elastic member 5 can apply pressure to the second clamping plate 2, more specifically, one end of the elastic member 5 is connected to the fourth side wall 22, and the other end of the elastic member 5 can abut against a wall or other objects, which is not limited herein.
Specifically, in this embodiment, the first side wall 11 and the third side wall 21 are opposite to the large surface of the battery cell 9, and it is understood that the direction from one large surface of the battery cell 9 to the other large surface of the battery cell 9 is the thickness direction of the battery cell 9, and the pressure detection unit 4 can directly contact with the large surface of the battery cell 9 to detect the expansion force in the thickness direction of the battery cell 9, so that the accuracy of detecting the expansion force of the battery cell 9 by the pressure detection unit 4 is further improved.
Thus, through adopting above-mentioned scheme, first splint 1 and second splint 2 can form stable centre gripping so that pressure detection unit 4 can carry out the inflation power detection to electric core 9 when electric core 9 inflation to, owing to the setting of elastic component 5, on the one hand, the usable elastic component 5 of electric core 9 inflation in-process carries out convenient and fast record to the inflation power condition and the inflation displacement condition of electric core 9, on the other hand, can make the clamping force of first splint 1 and second splint 2 act on electric core 9 more evenly, also can make the inflation power of electric core 9 act on pressure detection unit 4 more evenly to pressure detection unit 4 can make the detection accuracy of pressure detection unit 4 to electric core 9 inflation power improve.
It should be noted that, in some other embodiments, the expansion detection device may also perform expansion force test on the battery module composed of a plurality of battery cells 9, and may be selected according to actual requirements.
Further, in this embodiment, the expansion detecting device further includes a third clamping plate 3, the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 are sequentially arranged and spaced apart, and the elastic member 5 is disposed between the fourth side wall 22 and the third clamping plate 3; when the cell 9 expands, the elastic member 5 between the fourth side wall 22 and the third clamping plate 3 is pressed, and the elastic member 5 between the fourth side wall 22 and the third clamping plate 3 can apply pressure to the second clamping plate 2; in this way, compared with the arrangement of the elastic member 5 between the first clamping plate 1 and the second clamping plate 2, the arrangement position of the elastic member 5 at this time does not affect the arrangement and operation of the pressure detecting unit 4 on the first side wall 11 and/or the third side wall 21, so that the expansion force of the battery cell 9 by the pressure detecting unit 4 can be detected more accurately.
It should be noted that, in some other embodiments, the elastic member 5 may be disposed between the first clamping plate 1 and the second clamping plate 2, and when the battery cell 9 expands, the elastic member 5 disposed between the first clamping plate 1 and the second clamping plate 2 may apply a tensile force to the first clamping plate 1 and the second clamping plate 2, so that the setting of the third clamping plate 3 may be omitted, so as to achieve the purpose of saving production cost, and the elastic member may be selected according to actual requirements.
It should be noted that, in some other embodiments, a portion of the elastic member 5 may be disposed between the first clamping plate 1 and the second clamping plate 2, and a portion of the elastic member 5 may be disposed between the fourth side wall 22 and the third clamping plate 3, which may be selected according to practical needs.
Further, in this embodiment, the third side wall 21 is provided with the pressure detecting unit 4, that is, the pressure detecting unit 4 and the elastic member 5 are connected to two opposite sides of the second clamping plate 2 in a one-to-one correspondence, so that when the expansion force of the battery cell 9 acts on the pressure detecting unit 4 on the second clamping plate 2, the elastic member 5 is pressed and elastically presses the second clamping plate 2 provided with the pressure detecting unit 4, so that the expansion force of the battery cell 9 can act on the pressure detecting unit 4 more uniformly, and the detection accuracy of the expansion force of the battery cell 9 by the pressure detecting unit 4 can be further improved.
Preferably, in this embodiment, the pressure detecting unit 4 is a film pressure sensor, and the film pressure sensor has the advantages of simple structure, easy function implementation, low production cost, and the like, specifically, the film pressure sensor can be closely attached to the large surface of the electric core 9, and the film pressure sensor can measure not only the expansion force of the battery, but also the expansion stress distribution of the large surface of the electric core 9. It will be appreciated by those skilled in the art that the membrane pressure sensor may be electrically connected to the data analysis module, and the pressure data obtained by the membrane pressure sensor may be transmitted to the data analysis module, where the data analysis module may analyze the pressure data obtained by the membrane pressure sensor to provide data support for the structural design of the subsequent battery module. In some other embodiments, the pressure detecting unit 4 may be, but not limited to, a micro pressure sensor or a ceramic pressure sensor, etc., and may be selected according to practical needs, which is not limited only herein.
Preferably, in the present embodiment, in order to enable the pressing force of the elastic member 5 against the second clamping plate 2 to uniformly act on the second clamping plate 2, thereby enabling the clamping forces of the first clamping plate 1 and the second clamping plate 2 to further uniformly act on the battery cell 9, and enabling the expansion force of the battery cell 9 to further uniformly act on the pressure detection unit 4, the elastic member 5 is provided with a plurality of elastic members 5 uniformly distributed between the second clamping plate 2 and the third clamping plate 3; preferably, in the present embodiment, the plurality of elastic members 5 are uniformly connected to the periphery of the second clamping plate 2, so that the elastic pressing force of the elastic members 5 against the clamping plate can be further uniform, and the number and cost of the elastic members 5 can be reduced.
Specifically, in the present embodiment, the second clamping plate 2 is a rectangular plate, and preferably, each corner area of the rectangular plate is connected with an elastic member 5. Indeed, in some other embodiments, the second clamping plate 2 may be, but not limited to, a trapezoidal plate or a circular plate, etc., which is selected according to practical needs, and is not limited only herein.
Specifically, in this embodiment, the expansion detecting device further includes a plurality of fastening members 7, each fastening member 7 is inserted into the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3, that is, the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 are connected through the fastening members 7, preferably, the plurality of fastening members 7 are uniformly distributed, and the plurality of elastic members 5 are sleeved with the plurality of fastening members 7 in a one-to-one correspondence manner, so that the overall structure of the expansion detecting device is more compact and exquisite, and the overall occupied space of the expansion detecting device is reduced.
Specifically, the fastener 7 is a bolt, the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 can be respectively in threaded connection with the bolt, so that the relative positions of the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 are adjustable, and the expansion detection device can measure the expansion force of the battery cell 9 under constant pressure and constant displacement or the expansion force of the battery cell 9 under constant pressure and non-constant displacement by adjusting the relative positions of the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3.
Specifically, in the present embodiment, the elastic member 5 is a spring having a hollow structure, which is fitted over the fastener 7 through the hollow structure, and more specifically, one end of the spring abuts against the second clamping plate 2, and the other end of the spring abuts against the third clamping plate 3. Indeed, in some other embodiments, the elastic member 5 may be, but not limited to, elastic silica gel or elastic rubber, etc., and may be selected according to practical needs, which is not limited only herein.
Further, in the present embodiment, the expansion detecting device further includes a displacement detecting unit 8, the displacement detecting unit 8 is disposed between the second clamping plate 2 and the third clamping plate 3, and the displacement detecting unit 8 is configured to detect the expansion displacement of the battery cell 9 during the charge and discharge process. So set up, expansion detection device has the dual function of expansion force detection and expansion displacement detection, is equivalent to integrating expansion force detection device and expansion displacement measuring device to expansion detection device has simple structure and occupation space advantage on the whole.
Preferably, in this embodiment, the displacement detection unit 8 is a laser displacement sensor, so that the expansion displacement condition of the battery cell 9 in the charging and discharging process can be accurately measured, the reliability is stronger, the volume is smaller, specifically, the laser displacement sensor includes a transmitting end 81 and a receiving end 82 which are oppositely arranged, the transmitting end 81 is arranged on the second clamping plate 2, and the receiving end 82 is arranged on the third clamping plate 3; it should be noted that, in some other embodiments, the transmitting end 81 may be disposed on the third clamping plate 3, and the receiving end 82 is correspondingly disposed on the second clamping plate 2.
Preferably, the transmitting end 81 is disposed in the middle area of the second clamping plate 2, and the receiving end 82 is disposed in the middle area of the third clamping plate 3, so as to further improve the detection result of the expansion displacement of the battery cell 9. It should be noted that, in some other embodiments, the transmitting end 81 may be disposed in the middle region of the third clamping plate 3, and the receiving end 82 is disposed opposite to the middle region of the second clamping plate 2.
In some other embodiments, the displacement detecting unit 8 may be, but not limited to, a magneto-sensitive displacement sensor or a metal film displacement sensor, etc., and may be selected according to actual needs, which is not limited only herein.
Further, in the present embodiment, in order to reduce the influence of the self gravity of the battery cell 9 on the expansion force of the battery cell 9 in the thickness direction, the first clamping plate 1, the second clamping plate 2, and the third clamping plate 3 are all placed vertically. It should be noted that, in some other embodiments, the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 may be disposed transversely, which is selected according to practical situations.
Example two
Referring to fig. 2, the difference between the present embodiment and the first embodiment is that: the expansion detection device further comprises a fourth clamping plate 6, and specifically, the fourth clamping plate 6, the first clamping plate 1, the second clamping plate 2 and the third clamping plate 3 are sequentially arranged and distributed at intervals; the first side wall 11 and the third side wall 21 are both provided with a pressure detection unit 4, and an elastic piece 5 and a displacement detection unit 8 are also arranged between the fourth clamping plate 6 and the second side wall 12, so that on one hand, the elastic supporting pressure of the elastic piece 5 can respectively act on the corresponding first clamping plate 1 and second clamping plate 2, so that the clamping force of the first clamping plate 1 and the second clamping plate 2 can more uniformly act on the battery cell 9, and the expansion force of the battery cell 9 can also further uniformly act on the pressure detection unit 4; on the other hand, the expansion forces of the two large faces of the battery cell 9 can be applied to the two pressure detection units 4 in a one-to-one correspondence manner, and the expansion force detection and the expansion displacement detection can be performed on the battery cell 9 from the two large faces of the battery cell 9 respectively, so that more reliable data can be obtained for analysis or comparison.
In some other embodiments, the pressure detecting unit 4 may be disposed on only the first side wall 11 or the third side wall 21, which is selected according to practical needs.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (8)
1. An expansion detection device for a battery, characterized by comprising:
a first clamping plate (1), wherein the first clamping plate (1) is provided with a first side wall (11) and a second side wall (12) which are opposite;
a second clamping plate (2), wherein the second clamping plate (2) is provided with a third side wall (21) and a fourth side wall (22) which are opposite, the first side wall (11) is opposite to the third side wall (21), and a clamping space for clamping the battery cell (9) is formed between the first side wall (11) and the third side wall (21);
a pressure detection unit (4) disposed on the first side wall (11) and/or the third side wall (21), wherein the pressure detection unit (4) is used for detecting the expansion force of the battery cell (9);
an elastic member (5), the elastic member (5) being provided between the first clamping plate (1) and the second clamping plate (2), and/or the elastic member (5) being provided on at least one of the second side wall (12) and the fourth side wall (22);
the expansion detection device further comprises a third clamping plate (3), the first clamping plate (1), the second clamping plate (2) and the third clamping plate (3) are sequentially arranged at intervals, and the elastic piece (5) is arranged between the fourth side wall (22) and the third clamping plate (3);
the expansion detection device further comprises a displacement detection unit (8), and the displacement detection unit (8) is arranged between the second clamping plate (2) and the third clamping plate (3).
2. The expansion detection device according to claim 1, further comprising a fourth clamping plate (6), wherein the fourth clamping plate (6), the first clamping plate (1), the second clamping plate (2) and the third clamping plate (3) are sequentially arranged and distributed at intervals, the elastic piece (5) is arranged between the second side wall (12) and the fourth clamping plate (6), and the elastic piece (5) is arranged between the fourth side wall (22) and the third clamping plate (3).
3. Expansion detection device according to claim 1 or 2, characterized in that the elastic members (5) are provided in a number, that the elastic members (5) are evenly connected to the second clamping plate (2), and/or that the elastic members (5) are evenly connected to the first clamping plate (1).
4. An expansion detection device according to claim 3, characterized in that a number of said elastic members (5) are uniformly connected to the periphery of the second clamping plate (2) and/or a number of said elastic members (5) are uniformly connected to the periphery of the first clamping plate (1).
5. The expansion detection device according to claim 1, further comprising a plurality of fastening members (7), wherein the fastening members (7) are inserted into the first clamping plate (1), the second clamping plate (2) and the third clamping plate (3), the plurality of fastening members (7) are uniformly distributed, and the plurality of elastic members (5) are sleeved on the plurality of fastening members (7) in a one-to-one correspondence.
6. Expansion detection device according to claim 1 or 2 or 4 or 5, characterized in that the pressure detection unit (4) is a thin film pressure sensor.
7. Expansion detection device according to claim 1, characterized in that the displacement detection unit (8) is a laser displacement sensor comprising a transmitting end (81) and a receiving end (82) arranged opposite each other; the transmitting end (81) is arranged on the second clamping plate (2), the receiving end (82) is arranged on the third clamping plate (3), or the transmitting end (81) is arranged on the third clamping plate (3), and the receiving end (82) is arranged on the second clamping plate (2).
8. The expansion detection device according to claim 1 or 2 or 4 or 5 or 7, characterized in that the first clamping plate (1) and the second clamping plate (2) are placed vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482032.0U CN220602778U (en) | 2023-06-09 | 2023-06-09 | Expansion detection device for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482032.0U CN220602778U (en) | 2023-06-09 | 2023-06-09 | Expansion detection device for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220602778U true CN220602778U (en) | 2024-03-15 |
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ID=90167076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321482032.0U Active CN220602778U (en) | 2023-06-09 | 2023-06-09 | Expansion detection device for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220602778U (en) |
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2023
- 2023-06-09 CN CN202321482032.0U patent/CN220602778U/en active Active
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