CN115541128A - Sealing performance detection device and detection method for cylindrical steel shell battery - Google Patents
Sealing performance detection device and detection method for cylindrical steel shell battery Download PDFInfo
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- CN115541128A CN115541128A CN202211176978.4A CN202211176978A CN115541128A CN 115541128 A CN115541128 A CN 115541128A CN 202211176978 A CN202211176978 A CN 202211176978A CN 115541128 A CN115541128 A CN 115541128A
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- cylindrical steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of lithium battery production, and provides a device and a method for detecting the sealing property of a cylindrical steel shell battery, wherein the device for detecting the sealing property of the cylindrical steel shell battery comprises the following components: a base and a clamp; the base is provided with positioning cylinders which are arranged along the height direction of the base; one end of the positioning cylinder is communicated with the gas supply mechanism, the other end of the positioning cylinder is used for the shell bottom of the cylindrical steel shell battery to extend into, and a sealing structure matched with the shell bottom is arranged in the positioning cylinder and is annular; the fixture is used for clamping the cylindrical steel shell battery and is movably arranged on the base along the height direction of the base; under the condition that the shell bottom is in sealed connection with the sealing structure, the gas supply mechanism charges gas into the cylindrical steel shell battery through the opening of the shell bottom, and the sealing performance of the cap is judged by observing whether bubbles exist in liquid covered at the sealing position of the cap; the method is simple to operate, and the detection efficiency of the sealing performance of the cap is improved.
Description
Technical Field
The invention relates to the technical field of lithium battery production, in particular to a device and a method for detecting the sealing property of a cylindrical steel shell battery.
Background
In the production process of the cylindrical steel shell battery, the opening of the steel shell needs to be sealed by using the cap, so that the inside and the outside of the battery are isolated; if the sealing of the cap has defects, the electrolyte can be discharged along the defects by the pressure generated inside the cylindrical steel shell battery, so that the cylindrical steel shell battery has certain potential safety hazards, and therefore, the detection of the sealing performance of the sealed cap is very important.
The existing tightness detection method is a helium detection method, and comprises the steps of putting a battery into a first cavity, maintaining for a certain period of time, filling helium with a certain pressure in the first cavity, if the tightness of the battery is poor, enabling part of the helium to permeate into the battery, transferring the battery into a second cavity, vacuumizing the second cavity, detecting whether helium exists in the second cavity by using a mass spectrometer, and if the helium exists in the second cavity, indicating that the tightness of the battery is unqualified; the detection method is complex to operate and low in detection efficiency.
Disclosure of Invention
The invention provides a device and a method for detecting the sealing property of a cylindrical steel shell battery, which are used for solving or improving the problems of complex operation and low efficiency in the sealing property detection process of the conventional cylindrical steel shell battery.
The invention provides a tightness detection device for a cylindrical steel shell battery, which comprises: a base and a clamp; the base is provided with positioning cylinders which are arranged along the height direction of the base; one end of the positioning cylinder is communicated with the gas supply mechanism, the other end of the positioning cylinder is used for the shell bottom of the cylindrical steel shell battery to extend into, and a sealing structure matched with the shell bottom is arranged in the positioning cylinder and is annular;
the clamp is used for clamping the cylindrical steel shell battery and movably arranged on the base along the height direction of the base;
and under the condition that the shell bottom is hermetically connected with the sealing structure, the gas supply mechanism is used for charging gas into the cylindrical steel shell battery through the opening of the shell bottom.
According to the invention, the tightness detection device for the cylindrical steel shell battery is provided, and the clamp comprises: the device comprises a first clamping die, a second clamping die and a driving mechanism;
the first clamping die and the second clamping die are oppositely arranged, and the driving mechanism is used for driving the second clamping die to move towards one side close to the first clamping die or one side far away from the first clamping die along the clamping direction.
According to the tightness detection device for the cylindrical steel-shell battery provided by the invention, the clamp further comprises: a base plate;
the bottom plate is provided with a first slide rail, the first slide rail extends along the clamping direction, the second clamping die is provided with a first slide block, and the first slide block is connected with the first slide rail.
According to the invention, the sealing detection device for the cylindrical steel shell battery is provided, and the driving mechanism comprises: the first connecting rod, the second connecting rod and the driving rod;
one end of the first connecting rod is connected with the second clamping die, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the middle of the driving rod, and one end of the driving rod is hinged to the bottom plate.
According to the tightness detection device for the cylindrical steel shell battery, provided by the invention, the bottom plate is provided with the strip-shaped hole, the strip-shaped hole extends along the clamping direction, the first slide rail is arranged in the strip-shaped hole, and the side walls of the strip-shaped hole along the two ends of the clamping direction are used for limiting the first slide block.
According to the tightness detection device for the cylindrical steel shell battery provided by the invention, the base is also provided with a side plate, the side plate extends along the height direction of the base, the side plate is provided with a second slide rail, the second slide rail extends along the height direction of the base, the clamp is provided with a second slide block, and the second slide block is connected with the second slide rail.
According to the tightness detection device for the cylindrical steel shell battery provided by the invention, one end of the second sliding rail, which is far away from the base, is provided with a limiting part, and the limiting part is used for limiting the second sliding block.
According to the tightness detection device for the cylindrical steel shell battery provided by the invention, the base is also provided with the clamping mechanism, the clamping mechanism is detachably connected with the clamp, and the shell bottom is abutted against the sealing structure through the clamping mechanism.
According to the tightness detection device for the cylindrical steel shell battery, the clamping mechanism comprises the elbow clamp.
The invention also provides a detection method of the sealing performance of the cylindrical steel shell battery, which is applied to the sealing performance detection device for the cylindrical steel shell battery and comprises the following steps:
opening a hole at the bottom of the cylindrical steel shell battery;
mounting the cylindrical steel shell battery on a clamp, and reducing the height of the clamp so that the shell bottom of the cylindrical steel shell battery extends into the positioning cylinder and is abutted against the sealing structure;
and opening an air supply mechanism to inflate the cylindrical steel shell battery through the opening, and applying liquid at the cap of the cylindrical steel shell battery to observe whether bubbles are generated.
According to the device and the method for detecting the sealing performance of the cylindrical steel shell battery, provided by the invention, after the shell bottom of the cylindrical steel shell battery is hermetically connected with the positioning cylinder through the clamp, the gas supply mechanism is used for inflating the interior of the cylindrical steel shell battery, and then the sealing performance of the cap can be conveniently judged by observing whether bubbles exist in liquid at the sealing position of the cap, so that the device and the method are simple and convenient to operate and have higher detection efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a tightness detection device for a cylindrical steel-shell battery provided by the invention;
FIG. 2 is a schematic view of a base according to the present invention;
FIG. 3 is a second schematic structural view of the tightness detection device for cylindrical steel-shelled batteries according to the present invention;
FIG. 4 is a schematic flow chart of a detection method provided by the present invention;
reference numerals:
1: a cylindrical steel-shelled battery; 2: a base; 3: a clamp; 31: a first clamping die; 32: a second clamping die; 33: a drive mechanism; 331: a first link; 332: a second link; 333: a drive rod; 34: a base plate; 341: a strip-shaped hole; 4: a positioning cylinder; 41: a sealing structure; 5: an air supply mechanism; 61: a first slide rail; 62: a first slider; 7: a side plate; 81: a second slide rail; 811: a limiting part; 82: a second slider; 9: an elbow clip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, 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 those shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
The following describes a device and a method for detecting the sealing performance of a cylindrical steel-shell battery provided by the present invention with reference to fig. 1 to 4.
Before the tightness of the cylindrical steel shell battery 1 is detected, a hole needs to be formed in advance in the shell bottom of the cylindrical steel shell battery 1, so that gas can be injected into the cylindrical steel shell battery 1 through the hole.
As shown in fig. 1 to 3, the tightness detection device for a cylindrical steel-shelled battery shown in this embodiment includes: a base 2 and a clamp 3.
The base 2 is provided with a positioning cylinder 4, and the positioning cylinders 4 are arranged along the height direction of the base 2; one end of the positioning cylinder 4 is communicated with the gas supply mechanism 5, the other end of the positioning cylinder 4 is used for the shell bottom of the cylindrical steel shell battery 1 to extend into, a sealing structure 41 matched with the shell bottom is arranged in the positioning cylinder 4, and the sealing structure 41 is annular, so that the sealing structure 41 can be fully contacted with the shell bottom, and gas is prevented from leaking from the joint of the sealing structure 41 and the shell bottom; the clamp 3 is used for clamping the cylindrical steel shell battery 1, and the clamp 3 is movably arranged on the base 2 along the height direction of the base 2; after the clamp 3 clamps the cylindrical steel shell battery 1, the height of the clamp 3 is reduced to enable the shell bottom to gradually extend into the positioning cylinder 4, under the condition that the shell bottom is in sealing connection with the sealing structure 41, the gas supply mechanism 5 is used for charging gas into the cylindrical steel shell battery 1 through an opening in the shell bottom, the charged gas is preferably nitrogen, the nitrogen is stabilized for about 5s to 10s after being charged, liquid is uniformly sprayed on a cap at the top of the cylindrical steel shell battery 1 to enable the liquid to cover a sealing position of the cap, if the sealing position has a defect, the nitrogen can be leaked from the defect and form bubbles in the liquid, and an operator can judge the sealing performance of the cap by observing whether the bubbles exist in the liquid; wherein, the liquid can be alcohol or DMC liquid (dimethyl carbonate is abbreviated as DMC).
The sealing performance detection device for the cylindrical steel shell battery, which is shown in the embodiment, is used for inflating the inside of the cylindrical steel shell battery 1 by utilizing the air supply mechanism 5 after the shell bottom of the cylindrical steel shell battery 1 is hermetically connected with the positioning cylinder 4 through the clamp 3, so that whether bubbles exist in liquid at the sealing position of the cap is observed, the sealing performance of the cap can be conveniently judged, the operation is simple and convenient, and the detection efficiency is high.
The height direction of the base 2 refers to a direction from top to bottom or from bottom to top in fig. 1.
The cap generally has two structures, one is a cap provided with a safety valve, and the other is a cap not provided with a safety valve; the safety valve has the function that when the pressure in the cylindrical steel shell battery exceeds a certain range, the safety valve is opened to realize pressure relief; in actual detection, if the sealing performance of the cap is required to be capable of bearing 0.9MPa, the cap provided with the safety valve cannot generate bubbles at the sealing part of the cap before the safety valve is opened; the cap provided with no safety valve is a cap that can withstand a pressure of 0.9MPa at the seal and does not leak gas.
As shown in fig. 1 and fig. 2, the sealing structure 41 of the present embodiment may be a sealing ring, and the inner diameter of the sealing ring is smaller than the outer diameter of the bottom of the cylindrical steel-shell battery 1.
In some embodiments, as shown in fig. 1 and 3, the clamp 3 shown in the present embodiment includes: a first holding die 31, a second holding die 32, and a driving mechanism 33; the first clamping die 31 and the second clamping die 32 are oppositely arranged, the driving mechanism 33 is used for driving the second clamping die 32 to move towards one side close to the first clamping die 31 or one side far away from the first clamping die 31 along the clamping direction, namely, the first clamping die 31 is equivalent to a fixing piece, the second clamping die 32 is equivalent to a driving piece, the second clamping die 32 moves towards one side close to the first clamping die 31 to clamp the cylindrical steel shell battery 1, and the second clamping die 32 moves towards one side far away from the first clamping die 31 to release the cylindrical steel shell battery 1.
Wherein, the clamping direction is the direction from left to right or the direction from left to right in fig. 1.
In some embodiments, as shown in fig. 1 and 3, the clamp 3 of the present embodiment further includes: a base plate 34; be equipped with first slide rail 61 on the bottom plate 34, first slide rail 61 extends along the centre gripping direction, is equipped with first slider 62 on the second centre gripping mould 32, and first slider 62 is connected with first slide rail 61.
Specifically, the first slide rail 61 guides the first slider 62 so that the second clamping die 32 can be stably moved in the clamping direction.
In some embodiments, as shown in fig. 1 and 3, the driving mechanism 33 shown in the present embodiment includes: a first link 331, a second link 332, and a drive lever 333; one end of the first link 331 is connected to the second clamping die 32, the other end of the first link 331 is hinged to one end of the second link 332, the other end of the second link 332 is hinged to the middle of the driving rod 333, and one end of the driving rod 333 is hinged to the base plate 34.
Specifically, the first connecting rod 331 extends along the clamping direction, when the second clamping die 32 needs to be driven to be away from the first clamping die 31, an operator pulls the other end of the driving rod 333 towards the side away from the first clamping die 31, and then the driving rod 333 drives the second clamping die 32 to be away from the first clamping die 31 sequentially through the second connecting rod 332 and the first connecting rod 331; when the second clamping die 32 needs to be driven to approach the first clamping die 31, an operator dials the other end of the driving rod 333 towards the side approaching the first clamping die 31, and then the driving rod 333 drives the second clamping die 32 to approach the first clamping die 31 through the second connecting rod 332 and the first connecting rod 331 in sequence, so as to clamp the cylindrical steel-shell battery 1.
In some embodiments, as shown in fig. 3, a strip-shaped hole 341 is formed in the bottom plate 34 shown in this embodiment, the strip-shaped hole 341 extends along the clamping direction, the first sliding rail 61 is disposed in the strip-shaped hole 341, and the side walls of the strip-shaped hole 341 along the two ends of the clamping direction are used for limiting the first sliding block 62.
Specifically, when first slider 62 slides on first slide rail 61, when first slider 62 slides to the one end of first slide rail 61 or the other end, the lateral wall of bar hole 341 can backstop first slider 62, carries on spacingly to first slider 62 promptly, can avoid first slider 62 roll-off first slide rail 61, has guaranteed the reliability of anchor clamps 3.
In some embodiments, as shown in fig. 1 to 3, a side plate 7 is further disposed on the base 2 in the present embodiment; the curb plate 7 extends along the direction of height of base, is equipped with second slide rail 81 on the curb plate 7, and second slide rail 81 extends along the direction of height of base 2, is equipped with second slider 82 on the anchor clamps 3, and second slider 82 is connected with second slide rail 81.
Specifically, curb plate 7 is equipped with two, and two curb plates 7 are relative parallel arrangement, and the both ends of bottom plate 34 all are connected with a second slider 82, and second slide rail 81 plays the guide effect to second slider 82 to make bottom plate 34 can stably go up and down, and then guaranteed the reliability that cylindrical steel shell battery 1's shell end and sealing washer are connected.
In some embodiments, as shown in fig. 1 to fig. 3, a limiting portion 811 is disposed at an end of the second slide rail 81 deviating from the base 2, and the limiting portion 811 is used for limiting the second slider 82.
In particular, during the lifting process of the bottom plate 34, the limiting portion 811 can stop the second sliding block 82 to prevent the second sliding block 82 from sliding out of the second sliding rail 81, so as to ensure the reliability of the movement of the clamp 3,
in some embodiments, as shown in fig. 1 to 3, the base 2 of the present embodiment is further provided with a clamping mechanism, the clamping mechanism is detachably connected to the clamp 3, and the shell bottom abuts against the sealing structure 41 through the clamping mechanism.
Specifically, the height of the bottom plate 34 is reduced, so that the shell bottom of the cylindrical steel shell battery 1 gradually extends into the positioning cylinder 4 and contacts with the sealing ring, then the clamping mechanism acts on the bottom plate 34, downward acting force is applied to the bottom plate 34, so that the shell bottom of the cylindrical steel shell battery 1 is abutted to the sealing ring, the sealing performance between the shell bottom and the sealing ring is ensured, and the leakage of nitrogen from the joint between the shell bottom and the sealing ring in the inflation process is avoided.
In some embodiments, as shown in fig. 1 to 3, the clamping mechanism of this embodiment includes four elbow clamps 9, the bottom plate 34 is rectangular, and the four elbow clamps 9 are located at four corners of the bottom plate 34, so as to ensure the uniformity of the stress on the bottom plate 34 and improve the reliability of the seal between the shell bottom and the sealing ring.
As shown in fig. 4, the present embodiment further provides a method for detecting the sealing performance of a cylindrical steel-shelled battery, which is applied to the device for detecting the sealing performance of a cylindrical steel-shelled battery, and includes steps 410, 420, and 430.
And step 410, forming an opening at the bottom of the cylindrical steel shell battery.
And 420, mounting the cylindrical steel shell battery on a clamp, and reducing the height of the clamp so that the shell bottom of the cylindrical steel shell battery extends into the positioning cylinder and is abutted to the sealing structure.
And 430, starting an air supply mechanism to inflate the cylindrical steel shell battery through the opening, and spraying liquid on the cover cap of the cylindrical steel shell battery to observe whether bubbles are generated.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A leakproofness detecting device for cylindrical steel shell batteries, comprising:
the positioning device comprises a base, wherein positioning cylinders are arranged on the base and are distributed along the height direction of the base; one end of the positioning cylinder is communicated with the gas supply mechanism, the other end of the positioning cylinder is used for the shell bottom of the cylindrical steel shell battery to extend into, and a sealing structure matched with the shell bottom is arranged in the positioning cylinder and is annular;
the fixture is used for clamping the cylindrical steel shell battery, and the fixture is movably arranged on the base along the height direction of the base;
and under the condition that the shell bottom is connected with the sealing structure in a sealing manner, the gas supply mechanism is used for charging gas into the cylindrical steel shell battery through the opening of the shell bottom.
2. The tightness detection device for cylindrical steel-shelled batteries according to claim 1, characterized in that,
the jig includes: the device comprises a first clamping die, a second clamping die and a driving mechanism;
the first clamping die and the second clamping die are oppositely arranged, and the driving mechanism is used for driving the second clamping die to move towards one side close to the first clamping die or one side far away from the first clamping die along the clamping direction.
3. The tightness detection device for the cylindrical steel-shelled battery according to claim 2, characterized in that,
the jig further includes: a base plate;
the bottom plate is provided with a first slide rail, the first slide rail extends along the clamping direction, the second clamping die is provided with a first slide block, and the first slide block is connected with the first slide rail.
4. The tightness detection device for the cylindrical steel-shelled battery according to claim 3, characterized in that,
the drive mechanism includes: the first connecting rod, the second connecting rod and the driving rod;
one end of the first connecting rod is connected with the second clamping die, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the middle of the driving rod, and one end of the driving rod is hinged to the bottom plate.
5. The tightness detection device for the cylindrical steel-shelled battery according to claim 3, characterized in that,
be equipped with the bar hole on the bottom plate, the bar hole is followed the centre gripping direction extends, first slide rail is located the bar is downthehole, the bar hole is followed the lateral wall at the both ends of centre gripping direction is used for right first slider is spacing.
6. The tightness detection device for cylindrical steel-shelled batteries according to claim 1, characterized in that,
the fixture comprises a base, and is characterized in that a side plate is further arranged on the base, the side plate extends in the height direction of the base, a second slide rail is arranged on the side plate, the second slide rail extends in the height direction of the base, a second slide block is arranged on the fixture, and the second slide block is connected with the second slide rail.
7. The tightness detection device for cylindrical steel-shelled batteries according to claim 6, characterized in that,
one end of the second sliding rail, which deviates from the base, is provided with a limiting part, and the limiting part is used for limiting the second sliding block.
8. The tightness detection device for cylindrical steel-shelled batteries according to claim 1, characterized in that,
the base is further provided with a clamping mechanism, the clamping mechanism is detachably connected with the clamp, and the shell bottom is abutted to the sealing structure through the clamping mechanism.
9. The tightness detection device for cylindrical steel-shelled batteries according to claim 8, characterized in that,
the clamping mechanism includes an elbow clamp.
10. A method for detecting the sealing performance of a cylindrical steel-shell battery, which is applied to the device for detecting the sealing performance of the cylindrical steel-shell battery according to any one of claims 1 to 9, and which comprises the following steps:
opening a hole at the bottom of the cylindrical steel shell battery;
mounting the cylindrical steel shell battery on a clamp, and reducing the height of the clamp so that the shell bottom of the cylindrical steel shell battery extends into the positioning cylinder and is abutted against the sealing structure;
and opening an air supply mechanism to inflate the cylindrical steel shell battery through the opening, and spraying liquid on the cap of the cylindrical steel shell battery to observe whether bubbles are generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176978.4A CN115541128A (en) | 2022-09-26 | 2022-09-26 | Sealing performance detection device and detection method for cylindrical steel shell battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176978.4A CN115541128A (en) | 2022-09-26 | 2022-09-26 | Sealing performance detection device and detection method for cylindrical steel shell battery |
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| CN115541128A true CN115541128A (en) | 2022-12-30 |
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| CN202211176978.4A Pending CN115541128A (en) | 2022-09-26 | 2022-09-26 | Sealing performance detection device and detection method for cylindrical steel shell battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116593074A (en) * | 2023-07-18 | 2023-08-15 | 杭州久天科技有限公司 | New energy power battery detection equipment and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116593074A (en) * | 2023-07-18 | 2023-08-15 | 杭州久天科技有限公司 | New energy power battery detection equipment and method |
| CN116593074B (en) * | 2023-07-18 | 2023-10-03 | 浙江机电职业技术学院 | New energy power battery detection equipment and method |
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