CN112233921A - Circuit switch structure of square battery and detection system adopting same - Google Patents
Circuit switch structure of square battery and detection system adopting same Download PDFInfo
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- CN112233921A CN112233921A CN202011155146.5A CN202011155146A CN112233921A CN 112233921 A CN112233921 A CN 112233921A CN 202011155146 A CN202011155146 A CN 202011155146A CN 112233921 A CN112233921 A CN 112233921A
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- cover plate
- lever
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a circuit switch structure of a square battery and a detection system adopting the structure, wherein the circuit switch structure of the square battery comprises a cover plate and a base, the cover plate is connected with the base in a sliding manner, the circuit switch structure also comprises a first contact and a second contact, the first contact is positioned between the cover plate and the base, the second contact is positioned between the cover plate and the base, and the cover plate and the base can drive the first contact and the second contact to move relatively to be closed or disconnected after sliding relatively; put base and apron clamp between two adjacent square batteries, when square battery takes place the dilatational strain, the distance between two adjacent square batteries reduces, square battery extrusion apron and base, make apron and base draw close each other, thereby drive first contact and second contact relative motion and realize closing or the disconnection, establish ties first contact and second contact and detection circuitry or square battery's main circuit, can realize detecting and judge whether physical damage such as dilatational strain appears in square battery, improve square battery's safety in utilization.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a circuit switch structure of a square battery and a detection system adopting the structure.
Background
The circuit switch structure comprises a normally open contact and a normally closed contact, wherein the normally closed contact is a contact which is normally in a closed state, the contact is a contact point for connecting a circuit in the circuit, and the common contact comprises a button switch, a knife switch, a relay and the like.
In the field of battery safety state detection, a detection circuit is generally adopted to be directly electrically connected with two poles of a battery, so that parameters such as voltage and current of the battery are detected, whether the battery normally works is judged according to the voltage and the current of the battery, but the battery is usually not abnormal under the condition that the battery is not physically damaged, and the phenomenon of abnormal work is caused only after the battery is physically damaged under most conditions, such as extrusion deformation and high-temperature expansion of the battery, however, the detection circuit in the prior art cannot detect whether the battery is physically damaged or not, and even cannot judge whether the battery works abnormally due to physical damage or not.
Disclosure of Invention
The present invention is directed to a circuit switch structure of a square battery and a detection system using the same, so as to solve at least one of the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides a circuit switch structure of a square battery, including a cover plate and a base, where the cover plate is connected with the base in a sliding manner, and further including a first contact and a second contact, where the first contact is located between the cover plate and the base, the second contact is located between the cover plate and the base, and the cover plate and the base can drive the first contact and the second contact to move relatively to close or open after sliding relatively.
According to the circuit switch structure of the square battery, provided by the invention, in the using process, the base and the cover plate are clamped between two adjacent square batteries, when the square batteries are expanded and deformed, the distance between the two adjacent square batteries is reduced, the square batteries extrude the cover plate and the base to enable the cover plate and the base to be close to each other, so that the first contact and the second contact are driven to move relatively to realize closing or opening, the first contact and the second contact are connected with the detection circuit, whether the square batteries are physically damaged such as expanded and deformed can be detected and judged, and the use safety of the square batteries is improved. The circuit switch structure of the square battery can be directly connected with a main circuit of the square battery, and can also be connected in series between the square battery and a detection circuit, for example, a first terminal of the square battery A is connected with a first terminal of a protection board (the detection circuit is integrated on the protection board), a second terminal of the protection board is connected with a first contact, a second contact is connected with a third contact of the protection board, a fourth contact of the protection board is connected with a second terminal of the square battery B, and a fault can be detected after one square battery is subjected to expansion and deformation.
In a possible implementation manner of the present invention, the circuit switch structure of the square battery further includes a lever, the lever is located between the cover plate and the base, the first contact is fixedly connected to one end of the lever, the second contact is fixedly connected to the base, the lever is rotatably connected to the base, a distance between one end of the lever, where the first contact is located, and the cover plate is greater than a distance between the other end of the lever and the cover plate, a rotation center of the lever is located between two ends of the lever, the first contact is located between the lever and the second contact, the second contact is located between the first contact and the base, and the first contact and the second contact are abutted in a direction in which the cover plate slides relative to the base.
Through the possible implementation mode of the invention, in the working process, the square battery pushes the cover plate and the base to slide relatively and approach together after undergoing expansion deformation, the cover plate presses one end of the lever far away from the first contact after moving towards the direction close to the base, so that the lever rotates, and the end of the lever provided with the first contact rotates towards the direction far away from the second contact, so that the first contact and the second contact are driven to be disconnected.
In a possible embodiment of the present invention, a compression spring is fixedly connected to the base, the compression spring is located between the lever and the base, the compression spring is located at one end of the lever away from the first contact, a deformation direction of the compression spring is parallel to a sliding direction of the cover plate relative to the base, and the compression spring is always in a compressed state.
Through the possible implementation manner of the invention, when the square battery is not expanded and deformed, the compression spring exerts a thrust on one end of the lever, which is far away from the first contact, and the lever is limited to rotate so that the first contact moves towards the direction far away from the second contact, thereby avoiding the false alarm phenomenon of the square spring in the normal use process and improving the accuracy of the detection result.
In a possible embodiment of the present invention, a support is fixedly connected to a surface of the base close to the cover plate, a center of the lever is rotatably connected to the support, and a central axis of rotation of the lever is perpendicular to a direction in which the cover plate slides relative to the base.
With the above possible embodiments of the present invention, the holder can increase the distance between the lever and the base to facilitate the installation of the first contact, the second contact, and the compression spring between the lever and the base.
In a possible embodiment of the present invention, a first diagonal rod is fixedly connected to a surface of the cover plate close to the base, a second diagonal rod is fixedly connected to a surface of the base close to the cover plate, the first contact is fixedly connected to an end of the first diagonal rod away from the cover plate, the first contact is located on a surface of the first diagonal rod away from the cover plate, the second contact is fixedly connected to an end of the second diagonal rod away from the base, the second contact is located on a surface of the second diagonal rod away from the base, the first contact is located between the first diagonal rod and the second contact, the second contact is located between the second diagonal rod and the first contact, and the first contact and the second contact are abutted along a sliding direction of the cover plate relative to the base.
Through the possible implementation manner of the invention, in the use process, the detection circuit is connected in series with the first contact and the second contact, or the first contact and the second contact are connected in series with the main circuit of the square battery, when the square battery expands and deforms, the cover plate and the base are pressed, the distance between the cover plate and the base is reduced, the first diagonal rod and the second diagonal rod are pushed to move relatively, the first diagonal rod moves towards the direction close to the base, the second diagonal rod moves towards the direction close to the cover plate, and the first contact and the second contact are disconnected, so that the square battery is protected, the disconnection information is fed back to the detection circuit, and whether the square battery is physically damaged such as physical expansion is generated or not is conveniently detected.
In a possible embodiment of the present invention, the first contact is fixedly connected to a surface of the cover plate close to the base, the second contact is fixedly connected to a surface of the base close to the cover, a gap is formed between the first contact and the second contact, and the first contact and the second contact are opposite to each other along a direction in which the cover plate slides relative to the base; the cover plate is parallel to the base.
Through the possible implementation manner of the invention, in the use process, the detection circuit is connected in series with the first contact and the second contact, or the first contact and the second contact are connected in series with the main circuit of the square battery, when the square battery expands and deforms, the cover plate and the base are pressed, the distance between the cover plate and the base is reduced, the first contact and the second contact are pushed to be close to each other and contact with each other, the first contact and the second contact are closed, and the detection circuit is convenient to detect whether the square battery is physically damaged such as expansion or not; the cover plate and the base can be more smoothly clamped between two adjacent square batteries, and the accuracy of a detection result is improved.
In a possible embodiment of the invention, a frame is provided between the cover plate and the base, the frame is disposed around edges of the cover plate and the base, the frame has flexibility, and the first contact and the second contact are located inside the frame.
Through the possible implementation manner of the invention, the frame can isolate the first contact and the second contact inside, so that the first contact and the second contact are prevented from being extruded or collided by external objects, dust and other impurities can be prevented from falling on the surfaces of the first contact and the second contact, and the service life of the circuit switch structure of the square battery is prolonged.
In a possible embodiment of the present invention, the cover plate and the base are of a square plate structure, one surface of the cover plate close to the base is fixedly connected with four guide posts, the four guide posts are respectively located at four corners of the cover plate, the base is correspondingly provided with four guide holes, the guide posts are inserted into the guide holes, side walls of the guide posts are provided with step limiting surfaces, the step limiting surfaces are located outside the guide holes, and the diameters of the step limiting surfaces are larger than the diameters of the guide holes.
Through the possible implementation manner of the invention, the guide post can guide the cover plate and the base, so that the cover plate and the base are prevented from being misplaced when two adjacent square batteries are misplaced, the deformation of the overall appearance of the circuit switch structure of the square batteries is avoided, the first contact and the second contact can be kept in stable relative positions, and the accuracy of the detection result is improved.
In a possible implementation manner of the present invention, the circuit switch structure of the square battery further includes a battery holder, a first elastic sheet and a second elastic sheet, an end of the first elastic sheet and an end of the second elastic sheet are respectively and fixedly connected to the battery holder, an end of the first elastic sheet far away from the battery holder and an end of the second elastic sheet far away from the battery holder are disposed opposite to each other, and a gap is formed between the first elastic sheet and the second elastic sheet.
In a second aspect, the present invention provides a detection system, in which the circuit switch structure of the square battery in the first aspect of the present invention is applied, and further includes a detection circuit, where the first contact and the second contact are connected in series with the detection circuit.
According to the possible embodiment of the invention, the plurality of square cells are arranged in an array, the circuit switch structure of the square cells is clamped between the square cells and the square cells, the electrodes of the square cells, the detection circuit and the first contact and the second contact are sequentially connected in series, after the square cells swell, the first contact and the second contact are opened or closed, and after the detection circuit detects that the first contact and the second contact are opened or closed, the square cells are judged to swell and damage.
Drawings
Fig. 1 is a schematic diagram of a circuit switch structure of a first prismatic battery in an embodiment of the present invention;
fig. 2 is a view of a circuit switch structure of a first prismatic battery in the direction a in fig. 1 according to the embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit switch structure and a square battery array assembly structure of a first square battery according to an embodiment of the invention;
fig. 4 is a schematic diagram of a circuit switch structure of a second prismatic battery according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a circuit switch structure of a third prismatic battery according to the embodiment of the present invention;
fig. 6 is a schematic diagram of a circuit switch structure of a fourth prismatic battery according to the embodiment of the present invention.
Description of reference numerals:
110. a cover plate; 120. a base; 130. a frame; 140. a guide post; 150. a step limiting surface; 160. a guide hole; 210. a first contact; 220. a second contact; 310. a lever; 320. a compression spring; 330. a support; 340. a first diagonal member; 350. a second diagonal member; 400. a detection circuit; 500. a square battery; 600. a battery holder; 610. a first spring plate; 620. and a second elastic sheet.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
Referring to fig. 1 to 3, in a first embodiment of the present invention, a circuit switch structure of a square battery is provided, including a cover plate 110 and a base 120, where the cover plate 110 is slidably connected to the base 120, and further including a first contact 210 and a second contact 220, the first contact 210 is located between the cover plate 110 and the base 120, the second contact 220 is located between the cover plate 110 and the base 120, and the cover plate 110 and the base 120 can drive the first contact 210 and the second contact 220 to move relatively to close or open after sliding relatively.
The circuit switch structure of the square battery provided by the embodiment, in the using process, the base 120 and the cover plate 110 are clamped between two adjacent square batteries 500, when the square battery 500 is expanded and deformed, the distance between two adjacent square batteries 500 is reduced, the square battery 500 extrudes the cover plate 110 and the base 120, the cover plate 110 and the base 120 are mutually closed, thereby driving the first contact 210 and the second contact 220 to move relatively to realize closing or opening, the first contact 210 and the second contact 220 are connected with the detection circuit 400, whether the square battery 500 is physically damaged such as expanded and deformed can be detected and judged, and the use safety of the square battery 500 is improved. The circuit switch structure of the square battery 500 may be directly connected to the main circuit of the square battery 500, or may be connected in series between the square battery 500 and the detection circuit 400, for example, the first terminal of the square battery 500A is connected to the first terminal of the protection board (the detection circuit 400 is integrated on the protection board), the second terminal of the protection board is connected to the first contact 210, the second contact 220 is connected to the third contact of the protection board, the fourth contact of the protection board is connected to the second terminal of the square battery 500B, and a failure can be detected after one of the square batteries 500 is deformed due to expansion.
In a possible implementation manner of this embodiment, the circuit switch structure of the square battery 500 further includes a lever 310, the lever 310 is located between the cover plate 110 and the base 120, the first contact 210 is fixedly connected to one end of the lever 310, the second contact 220 is fixedly connected to the base 120, the lever 310 is rotatably connected to the base 120, a distance between one end of the lever 310, where the first contact 210 is located, and the cover plate 110 is greater than a distance between the other end of the lever 310 and the cover plate 110, a rotation center of the lever 310 is located between two ends of the lever 310, the first contact 210 is located between the lever 310 and the second contact 220, the second contact 220 is located between the first contact 210 and the base 120, and the first contact 210 abuts against the second contact 220 in a direction in which the cover plate 110 slides relative to the base 120.
Through the above possible implementation manner of this embodiment, during operation, the square battery 500 expands and deforms to push the cover plate 110 and the base 120 to slide relatively close to each other, the cover plate 110 moves towards the direction close to the base 120 to press one end of the lever 310 away from the first contact 210, so that the lever 310 rotates, and the end of the lever 310 provided with the first contact 210 rotates towards the direction away from the second contact 220, thereby driving the first contact 210 and the second contact 220 to disconnect.
In a possible implementation manner of this embodiment, a compression spring 320 is fixedly connected to the base 120, the compression spring 320 is located between the lever 310 and the base 120, the compression spring 320 is located at an end of the lever 310 away from the first contact 210, a deformation direction of the compression spring 320 is parallel to a sliding direction of the cover plate 110 relative to the base 120, and the compression spring 320 is always in a compressed state.
Through the above possible implementation manner of this embodiment, when the prismatic battery 500 is not expanded and deformed, the compression spring 320 applies a pushing force to the end of the lever 310 away from the first contact 210, and limits the rotation of the lever 310 to make the first contact 210 move towards the direction away from the second contact 220, so as to avoid the occurrence of a false alarm phenomenon during the normal use of the prismatic spring, and improve the accuracy of the detection result.
In a possible embodiment of this embodiment, a support 330 is fixedly connected to a surface of the base 120 close to the cover 110, the center of the lever 310 is rotatably connected to the support 330, and the central axis of rotation of the lever 310 is perpendicular to the sliding direction of the cover 110 relative to the base 120.
With the above possible embodiments of the present embodiment, the holder 330 can increase the distance between the lever 310 and the base 120 to facilitate the installation of the first contact 210, the second contact 220, and the compression spring 320 between the lever 310 and the base 120.
Referring to fig. 4, in a possible implementation manner of the present embodiment, a first diagonal bar 340 is fixedly connected to a surface of the cover plate 110 close to the base 120, a second diagonal bar 350 is fixedly connected to a surface of the base 120 close to the cover plate 110, the first contact 210 is fixedly connected to an end of the first diagonal bar 340 away from the cover plate 110, the first contact 210 is located at a surface of the first diagonal bar 340 away from the cover plate 110, the second contact 220 is fixedly connected to an end of the second diagonal bar 350 away from the base 120, the second contact 220 is located at a surface of the second diagonal bar 350 away from the base 120, the first contact 210 is located between the first diagonal bar 340 and the second contact 220, the second contact 220 is located between the second diagonal bar 350 and the first contact 210, and the first contact 210 and the second contact 220 are abutted to each other along a sliding direction of the cover plate 110 relative to the base 120.
Through the above possible implementation manner of this embodiment, during the use process, the detection circuit 400 is connected in series to the first contact 210 and the second contact 220, or the first contact 210 and the second contact 220 are connected in series to the main circuit of the prismatic battery 500, when the prismatic battery 500 is subjected to swelling deformation, the cover plate 110 and the base 120 are pressed, the distance between the cover plate 110 and the base 120 is reduced, the first diagonal rod 340 and the second diagonal rod 350 are pushed to move relatively, the first diagonal rod 340 moves towards the direction close to the base 120, the second diagonal rod 350 moves towards the direction close to the cover plate 110, and the first contact 210 and the second contact 220 are disconnected, so that the prismatic battery 500 is protected, and the disconnection information is fed back to the detection circuit 400, which is convenient to detect whether the prismatic battery 500 is physically damaged, such as physically swelling.
Referring to fig. 5, in a possible implementation manner of the present embodiment, the first contact 210 is fixedly connected to a surface of the cover plate 110 close to the base 120, the second contact 220 is fixedly connected to a surface of the base 120 close to the cover plate 110, a gap is formed between the first contact 210 and the second contact 220, and the first contact 210 and the second contact 220 are opposite to each other along a sliding direction of the cover plate 110 relative to the base 120.
Through the above possible implementation manner of this embodiment, in the use process, the detection circuit 400 is connected in series to the first contact 210 and the second contact 220, or the first contact 210 and the second contact 220 are connected in series to the main circuit of the prismatic battery 500, when the prismatic battery 500 expands and deforms, the cover plate 110 and the base 120 are pressed, the distance between the cover plate 110 and the base 120 is reduced, the first contact 210 and the second contact 220 are pushed to approach and contact each other, the first contact 210 and the second contact 220 are closed, and the detection circuit 400 is convenient to detect whether the prismatic battery 500 expands or not and other physical damages occur.
In one possible implementation of this embodiment, the cover plate 110 is parallel to the base plate 120.
Through the above possible implementation manner of the present embodiment, the cover plate 110 and the base 120 can be more smoothly sandwiched between two adjacent prismatic batteries 500, so as to improve the accuracy of the detection result.
In a possible implementation manner of this embodiment, a frame 130 is disposed between the cover plate 110 and the base 120, the frame 130 is disposed around edges of the cover plate 110 and the base 120, the frame 130 has flexibility, and the first contact 210 and the second contact 220 are located inside the frame 130.
Through the above possible implementation manner of this embodiment, the frame 130 can isolate the first contact 210 and the second contact 220 inside, so as to prevent the first contact 210 and the second contact 220 from being squeezed or collided by an external object, and also prevent impurities such as dust from falling on the surfaces of the first contact 210 and the second contact 220, thereby prolonging the service life of the circuit switch structure of the prismatic battery 500.
In a possible implementation manner of this embodiment, the cover plate 110 and the base 120 are of a square plate structure, one surface of the cover plate 110 close to the base 120 is fixedly connected with four guide posts 140, the four guide posts 140 are respectively located at four corners of the cover plate 110, the base 120 is correspondingly provided with four guide holes 160, the guide posts 140 are inserted into the guide holes 160, a step limiting surface 150 is arranged on a side wall of the guide posts 140, the step limiting surface 150 is located outside the guide holes 160, and a diameter of the step limiting surface 150 is greater than a diameter of the guide holes 160.
Through the above possible implementation manner of this embodiment, the guide post 140 can guide the cover plate 110 and the base 120, so as to avoid the dislocation of the cover plate 110 and the base 120 caused by the dislocation between two adjacent prismatic batteries 500, and avoid the deformation of the overall appearance of the circuit switch structure of the prismatic batteries 500, so that the first contact 210 and the second contact 220 can maintain stable relative positions, and improve the accuracy of the detection result.
Referring to fig. 6, in a possible implementation manner of this embodiment, the circuit switch structure of the square battery further includes a battery holder 600, a first elastic sheet 610 and a second elastic sheet 620, an end of the first elastic sheet 610 and an end of the second elastic sheet 620 are respectively and fixedly connected to the battery holder 600, an end of the first elastic sheet 610 far away from the battery holder 600 and an end of the second elastic sheet 620 far away from the battery holder 600 are disposed opposite to each other, and a gap is formed between the first elastic sheet 610 and the second elastic sheet 620.
The battery 500 is mounted on the battery holder 600, the first elastic sheet 610 and the second elastic sheet 620 are located between two adjacent batteries 500, and the battery 500 expands and then presses the first elastic sheet 610 and the second elastic sheet 620, so that the first elastic sheet 610 and the second elastic sheet 620 are closed, the detection circuit 400 is respectively connected in series with the first elastic sheet 610 and the second elastic sheet 620, the closed states of the first elastic sheet 610 and the second elastic sheet 620 are detected, and whether the battery 500 breaks down is indirectly judged.
Referring to fig. 3, in a second embodiment of the present invention, a detection system is provided, which employs the circuit switch structure of the prismatic battery 500 in the first embodiment, and further includes a detection circuit 400, wherein the first contact 210 and the second contact 220 are connected in series with the detection circuit 400.
Through the above possible implementation manner of the present embodiment, a plurality of square cells 500 are arranged in an array, a circuit switch structure of the square cell 500 is sandwiched between each square cell 500 and each square cell 500, electrodes of the square cells 500, the detection circuit 400, and the first contact 210 and the second contact 220 are sequentially connected in series, after the square cells 500 swell, the first contact 210 and the second contact 220 are opened or closed, and after the detection circuit 400 detects that the first contact 210 and the second contact 220 are opened or closed, it is determined that the square cells 500 swell and are damaged.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (10)
1. The circuit switch structure of the square battery is characterized by comprising a cover plate (110) and a base (120), wherein the cover plate (110) is connected with the base (120) in a sliding mode, the circuit switch structure further comprises a first contact (210) and a second contact (220), the first contact (210) is located between the cover plate (110) and the base (120), the second contact (220) is located between the cover plate (110) and the base (120), and the cover plate (110) and the base (120) can drive the first contact (210) and the second contact (220) to move relatively to be closed or opened after sliding relatively.
2. The circuit switch structure of a square battery according to claim 1, wherein the circuit switch structure of a square battery (500) further comprises a lever (310), the lever (310) is located between the cover plate (110) and the base (120), the first contact (210) is fixedly connected to one end of the lever (310), the second contact (220) is fixedly connected to the base (120), the lever (310) is rotatably connected to the base (120), a distance between one end of the lever (310) where the first contact (210) is located and the cover plate (110) is greater than a distance between the other end of the lever (310) and the cover plate (110), a rotation center of the lever (310) is located between both ends of the lever (310), the first contact (210) is located between the lever (310) and the second contact (220), the second contact (220) is located between the first contact (210) and the base (120), and the first contact (210) and the second contact (220) abut in a direction in which the cover plate (110) slides relative to the base (120).
3. The circuit switch structure of the square battery according to claim 2, wherein a compression spring (320) is fixedly connected to the base (120), the compression spring (320) is located between the lever (310) and the base (120), the compression spring (320) is located at an end of the lever (310) far away from the first contact (210), a deformation direction of the compression spring (320) is parallel to a sliding direction of the cover plate (110) relative to the base (120), and the compression spring (320) is always in a compressed state.
4. The structure of the square battery circuit switch according to claim 3, wherein a support (330) is fixedly connected to a surface of the base (120) close to the cover plate (110), the center of the lever (310) is rotatably connected to the support (330), and the central axis of rotation of the lever (310) is perpendicular to the sliding direction of the cover plate (110) relative to the base (120).
5. The circuit switch structure of the square battery according to claim 1, wherein a first diagonal rod (340) is fixedly connected to a surface of the cover plate (110) close to the base (120), a second diagonal rod (350) is fixedly connected to a surface of the base (120) close to the cover plate (110), the first contact (210) is fixedly connected to an end of the first diagonal rod (340) far away from the cover plate (110), the first contact (210) is located on a surface of the first diagonal rod (340) far away from the cover plate (110), the second contact (220) is fixedly connected to an end of the second diagonal rod (350) far away from the base (120), the second contact (220) is located on a surface of the second diagonal rod (350) far away from the base (120), and the first contact (210) is located between the first diagonal rod (340) and the second contact (220), the second contact (220) is located between the second diagonal rod (350) and the first contact (210), and the first contact (210) and the second contact (220) abut along a sliding direction of the cover plate (110) relative to the base (120).
6. The circuit switch structure of the square battery according to claim 1, wherein the first contact (210) is fixedly connected to a surface of the cover plate (110) close to the base (120), the second contact (220) is fixedly connected to a surface of the base (120) close to the cover plate (110), a gap is formed between the first contact (210) and the second contact (220), and the first contact (210) and the second contact (220) are opposite to each other along a sliding direction of the cover plate (110) relative to the base (120); the cover plate (110) is parallel to the base (120).
7. The structure of the square battery circuit switch according to claim 6, wherein a frame (130) is disposed between the cover plate (110) and the base plate (120), the frame (130) is disposed around edges of the cover plate (110) and the base plate (120), the frame (130) has flexibility, and the first contact (210) and the second contact (220) are located inside the frame (130).
8. The circuit switch structure of the square battery according to claim 1, wherein the cover plate (110) and the base (120) are of a square plate-shaped structure, one surface of the cover plate (110) close to the base (120) is fixedly connected with four guide posts (140), the four guide posts (140) are respectively located at four corners of the cover plate (110), the base (120) is correspondingly provided with four guide holes (160), the guide posts (140) are inserted into the guide holes (160), the side walls of the guide posts (140) are provided with step limiting surfaces (150), the step limiting surfaces (150) are located outside the guide holes (160), and the diameter of the step limiting surfaces (150) is greater than that of the guide holes (160).
9. The circuit switch structure of the square battery according to claim 8, further comprising a battery holder (600), a first resilient piece (610) and a second resilient piece (620), wherein an end of the first resilient piece (610) and an end of the second resilient piece (620) are respectively and fixedly connected to the battery holder (600), one end of the first resilient piece (610) away from the battery holder (600) and one end of the second resilient piece (620) away from the battery holder (600) are arranged opposite to each other, and a gap is formed between the first resilient piece (610) and the second resilient piece (620).
10. A test system, characterized in that the circuit switch structure of the prismatic battery (500) of any of claims 1 to 9 is applied, further comprising a test circuit (400), and the first contact (210) and the second contact (220) are connected in series with the test circuit (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155146.5A CN112233921A (en) | 2020-10-26 | 2020-10-26 | Circuit switch structure of square battery and detection system adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155146.5A CN112233921A (en) | 2020-10-26 | 2020-10-26 | Circuit switch structure of square battery and detection system adopting same |
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| Publication Number | Publication Date |
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| CN112233921A true CN112233921A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011155146.5A Pending CN112233921A (en) | 2020-10-26 | 2020-10-26 | Circuit switch structure of square battery and detection system adopting same |
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| CN (1) | CN112233921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791538A (en) * | 2022-03-25 | 2022-07-26 | 南通金通茂电子有限公司 | Full-automatic detection equipment for electronic materials |
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2020
- 2020-10-26 CN CN202011155146.5A patent/CN112233921A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791538A (en) * | 2022-03-25 | 2022-07-26 | 南通金通茂电子有限公司 | Full-automatic detection equipment for electronic materials |
| CN114791538B (en) * | 2022-03-25 | 2023-03-24 | 南通金通茂电子有限公司 | Full-automatic detection equipment for electronic materials |
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