CN112233918A - Circuit switch structure and detection system adopting same - Google Patents

Circuit switch structure and detection system adopting same Download PDF

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Publication number
CN112233918A
CN112233918A CN202011156561.2A CN202011156561A CN112233918A CN 112233918 A CN112233918 A CN 112233918A CN 202011156561 A CN202011156561 A CN 202011156561A CN 112233918 A CN112233918 A CN 112233918A
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CN
China
Prior art keywords
contact
mounting plate
hoop member
battery
fixedly connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011156561.2A
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Chinese (zh)
Inventor
何南海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Xiaoding Technology Co ltd
Original Assignee
Ningbo Xiaoding Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Xiaoding Technology Co ltd filed Critical Ningbo Xiaoding Technology Co ltd
Priority to CN202011156561.2A priority Critical patent/CN112233918A/en
Publication of CN112233918A publication Critical patent/CN112233918A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • 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]
    • G01R31/3644—Constructional arrangements
    • 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]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a circuit switch structure and a detection system adopting the structure, wherein the circuit switch structure comprises a first contact, a second contact and a hoop member, the hoop member is provided with a fracture, two inner side surfaces of the fracture are respectively a first fracture surface and a second fracture surface, the first contact is fixedly connected to the first fracture surface, the second contact is fixedly connected to the second fracture surface, the first contact and the second contact are both metal contacts, the first contact is abutted against the second contact, the first contact is in insulated connection with the hoop member, and the second contact is in insulated connection with the hoop member; the hoop member is hooped on the battery, the first contact and the second contact are kept in butt joint before the battery expands, and the first contact and the second contact are respectively and electrically connected with the detection circuit; the diameter of the battery is increased when the battery is physically damaged, for example, the battery expands, the hoop is stretched by the battery, the first contact and the second contact are separated and disconnected, and the detection system judges whether the battery is physically damaged such as expansion through a detection circuit switch structure.

Description

Circuit switch structure and detection system adopting same
Technical Field
The invention relates to the technical field of batteries, in particular to a circuit switch structure and a detection system adopting the circuit switch 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 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 an electrical circuit switch structure, comprising a first contact, a second contact, and a hoop member for hooping a battery, wherein the hoop member drives the first contact and the second contact to close or open through an opening deformation.
In a possible implementation manner of the first aspect of the present invention, a fracture is provided on the hoop member, two inner side surfaces of the fracture are a first fracture surface and a second fracture surface, respectively, the first contact is fixedly connected to the first fracture surface, the second contact is fixedly connected to the second fracture surface, the first contact and the second contact are both metal contacts, the first contact and the second contact are abutted, the first contact is in insulated connection with the hoop member, the second contact is in insulated connection with the hoop member, and the hoop member drives the first contact and the second contact to be separated and disconnected through expansion deformation.
In a possible implementation manner of the first aspect of the present invention, two ends of the fracture are respectively fixedly connected to a first mounting plate and a second mounting plate, the first contact is fixedly connected to a surface of the first mounting plate close to the second mounting plate, the second contact is fixedly connected to a surface of the second mounting plate close to the first mounting plate, a surface of the first mounting plate close to the second mounting plate forms the first cross section, and a surface of the second mounting plate close to the first mounting plate forms the second cross section.
In a possible embodiment of the first aspect of the present invention, the hoop member has elasticity, and the first contact and the second contact maintain the pressing force by the elasticity of the hoop member.
In a possible implementation manner of the first aspect of the present invention, a fracture is provided on the hoop member, one end of the fracture extends and bypasses the other end of the fracture to form an extension portion of a semi-enclosed structure, the first contact is fixedly connected to one surface of the other end of the fracture, which is close to the extension portion, the second contact is located on one surface of the extension portion, which is close to the other end of the fracture, the first contact and the second contact are both metal contacts, a gap is provided between the first contact and the second contact, the first contact is in insulated connection with the hoop member, the second contact is in insulated connection with the hoop member, and the hoop member drives the first contact and the second contact to close together through expansion deformation.
In a possible implementation manner of the first aspect of the present invention, a first mounting plate and a second mounting plate are fixedly connected to two ends of the break, respectively, the second mounting plate is fixedly connected to an end of the extending portion, the first contact is fixedly connected to a surface of the first mounting plate close to the second mounting plate, and the second contact is fixedly connected to a surface of the second mounting plate close to the first mounting plate.
In a possible embodiment of the first aspect of the invention, the band has elasticity, and the first contact and the second contact are kept disconnected by the elasticity of the band.
In one possible embodiment of the first aspect of the invention, the hoop is circular.
In a second aspect, the present invention provides a detection system, which employs the circuit switch structure in the first aspect of the present invention, and further includes a detection circuit, where the first contact and the second contact are electrically connected to the detection circuit, respectively.
Drawings
FIG. 1 is a schematic diagram of a circuit switch structure mounted on a battery in accordance with one embodiment of the present invention;
fig. 2 is a schematic view of a connection structure of the hoop member and the first contact and the hoop member and the second contact according to an embodiment of the present invention;
FIG. 3 is a schematic view of a connection configuration of the first and second contacts after the band is spread apart by the battery in accordance with one embodiment of the present invention;
FIG. 4 is a schematic diagram of a circuit switch structure mounted on a battery in accordance with another embodiment of the present invention;
fig. 5 is a schematic view of a connection structure of the hoop member and the first contact and the hoop member and the second contact according to another embodiment of the present invention;
fig. 6 is a schematic view of a connection structure of the first and second contacts after the band is spread by the battery according to another embodiment of the present invention.
Description of reference numerals:
100. a first contact; 200. a second contact; 300. a hoop member; 310. breaking off; 311. a first cross section; 312. a second cross section; 320. a first mounting plate; 330. a second mounting plate; 340. a first insulating layer; 350. a second insulating layer; 360. an extension portion; 400. a detection circuit; 500. a battery.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
As described in the background art, in the field of detecting the safety state of the battery 500, the detection circuit 400 is usually adopted to be directly electrically connected to two poles of the battery 500, so as to detect parameters such as voltage and current of the battery 500, and determine whether the battery 500 normally operates according to the voltage and current of the battery 500, but the battery 500 usually does not have an abnormality without physical damage, and in most cases, the battery 500 does not normally operate after physical damage, such as the battery 500 is deformed by squeezing, expands at high temperature, and the like, but the detection circuit 400 in the prior art cannot detect whether the battery 500 is physically damaged, and even cannot determine whether the battery 500 operates abnormally due to physical damage.
Referring to fig. 1, fig. 2 and fig. 3, to solve the above technical problem, in a first embodiment of the present invention, a circuit switch structure is provided, which includes a first contact 100, a second contact 200 and a hoop 300, wherein a break 310 is disposed on the hoop 300, two inner side surfaces of the break 310 are a first section 311 and a second section 312, respectively, the first contact 100 is fixedly connected to the first section 311, the second contact 200 is fixedly connected to the second section 312, the first contact 100 and the second contact 200 are both metal contacts, the first contact 100 abuts against the second contact 200, the first contact 100 is in insulated connection with the hoop 300, and the second contact 200 is in insulated connection with the hoop 300.
In the circuit switch structure provided in this embodiment, taking the cylindrical battery 500 as an example, the hoop member 300 is hooped at the middle part of the battery 500, before the battery 500 swells, the first contact 100 and the second contact 200 are held in contact with each other, the first contact 100 and the second contact 200 are electrically connected to the detection circuit 400, the detection circuit 400 is a module for detecting the operation performance of the battery 500, and is a functional module commonly used in the field of the battery 500, and the detection result of the detection circuit 400 is normal in the closed state of the first contact 100 and the second contact 200. When the battery 500 is physically damaged by extrusion, high temperature and the like, the expansion diameter of the battery 500 is increased, the hoop 300 is expanded by the battery 500, the fracture 310 is increased, the distance between the first section 311 and the second section 312 is increased, the first contact 100 and the second contact 200 are separated and disconnected, after the detection circuit 400 detects that the first contact 100 and the second contact 200 are disconnected, the detection result is that the battery 500 works abnormally, and a worker or a user can timely detect that the battery 500 is abnormal according to the detection result, so that the risks of spontaneous combustion, explosion and the like of the battery 500 are reduced.
In one possible embodiment of this embodiment, the band 300 is circular.
Through the above possible implementation manner of the present embodiment, the hoop member 300 can closely fit the cylindrical surface of the cylindrical battery 500, and after the cylindrical surface of the battery 500 is deformed, the hoop member 300 can quickly respond to the deformation that is responded, so as to separate the first contact 100 and the second contact 200, thereby improving the detection accuracy and the response speed.
In a possible implementation manner of this embodiment, two ends of the fracture 310 are fixedly connected with a first mounting plate 320 and a second mounting plate 330, respectively, the first contact 100 is fixedly connected to a surface of the first mounting plate 320 close to the second mounting plate 330, the second contact 200 is fixedly connected to a surface of the second mounting plate 330 close to the first mounting plate 320, a surface of the first mounting plate 320 close to the second mounting plate 330 forms a first section 311, and a surface of the second mounting plate 330 close to the first mounting plate 320 forms a second section 312.
With the above possible embodiment of the present embodiment, the smaller the thickness of the hoop member 300, the higher the plasticity, but the smaller the areas of the first section 311 and the second section 312 are, which is not favorable for mounting the first contact 100 and the second contact 200, the larger the contact area of the first contact 100 and the second contact 200 is, the larger the contact area between the first contact 100 and the second contact 200 is, and the disconnection between the first contact 100 and the second contact 200 due to oxidation corrosion and the like can be avoided, because the larger the contact area between the first contact 100 and the second contact 200 is, by providing the first mounting plate 320 and the second mounting plate 330 on the break 310, the larger the areas of the first section 311 and the second section 312 can be, which is unfavorable for mounting the first contact 100 and the second contact 200, and therefore, the detection accuracy can be improved.
In one possible embodiment of this embodiment, the first mounting plate 320 and the second mounting plate 330 are parallel, and the center planes of the first mounting plate 320 and the second mounting plate 330 pass through the central axis of the hoop member 300.
Through the above possible implementation manner of this embodiment, the first mounting plate 320 and the second mounting plate 330 are respectively located at two sides of the center of the hoop member 300, and after the battery 500 expands, the hoop member 300 can be more easily spread, so that the distance between the first mounting plate 320 and the second mounting plate 330 is increased, the first contact 100 and the second contact 200 are disconnected, and the detection sensitivity is improved.
In a possible implementation manner of this embodiment, the first contact 100 and the second contact 200 are both cylindrical, the central axes of the first contact 100 and the second contact 200 are located on the same straight line, the end surfaces of the ends of the first contact 100 and the second contact 200 that are close to each other are parallel, and the end surfaces of the ends of the first contact 100 and the second contact 200 that are close to each other are abutted against each other.
With the above possible implementation of the present embodiment, the first contact 100 and the second contact 200 are cylindrical, which facilitates manufacturing and installation, and the contact area is more stable and the operation is more reliable.
In one possible embodiment of this embodiment, the hoop member 300 is a thin-walled member.
Through the possible implementation manner of the embodiment, the thin-wall part can be more tightly attached to the surface of the battery 500, and is easier to deform along with the battery 500, so that the response speed is higher.
In a possible embodiment of the present embodiment, the hoop member 300 has elasticity, and the first contact 100 and the second contact 200 maintain the pressing force under the elasticity of the hoop member 300.
With the above possible embodiments of the present embodiment, when the battery 500 is not expanded, the first contact 100 and the second contact 200 can stably maintain contact under the elastic force of the hoop member 300, and the contact surfaces of the first contact 100 and the second contact 200 are prevented from being loosened due to vibration and the like.
In one possible embodiment of this embodiment, the hoop member 300 is formed by bending a stainless steel sheet, and the first mounting plate 320 and the second mounting plate 330 are formed by bending both ends of a stainless steel sheet.
Through the above possible implementation manner of this embodiment, the stainless steel sheet has better corrosion resistance, better elasticity, and better thermal conductivity, which facilitates heat dissipation of the battery 500.
In a possible implementation manner of this embodiment, a first insulating layer 340 is fixedly connected to the first section 311, and the first contact 100 is fixedly connected to a side of the first insulating layer 340 away from the first section 311.
With the above possible implementation of the present embodiment, the first insulating layer 340 can prevent the first contact 100 from forming an electrical connection with the hoop member 300.
In a possible implementation manner of this embodiment, a second insulating layer 350 is fixedly connected to the second section 312, and the second contact 200 is fixedly connected to a side of the second insulating layer 350 away from the second section 312.
With the above possible implementation of the present embodiment, the second insulating layer 350 can prevent the second contact 200 from forming an electrical connection with the hoop 300.
Referring to fig. 4 to 6, in a possible implementation manner of this embodiment, a break 310 is provided on a hoop member 300, one end of the break 310 extends and bypasses the other end of the break 310 to form an extension 360 of a semi-enclosed structure, a first contact 100 is fixedly connected to one surface of the other end of the break 310 close to the extension 360, a second contact 200 is located on one surface of the extension 360 close to the other end of the break 310, the first contact 100 and the second contact 200 are both metal contacts, a gap is provided between the first contact 100 and the second contact 200, the first contact 100 is in insulated connection with the hoop member 300, the second contact 200 is in insulated connection with the hoop member 300, and the hoop member 300 drives the first contact 100 and the second contact 200 to close together through opening deformation.
In a possible implementation manner of this embodiment, a first mounting plate 320 and a second mounting plate 330 are fixedly connected to two ends of the break 310, respectively, the second mounting plate 330 is fixedly connected to the end of the extension portion 360, the first contact 100 is fixedly connected to a surface of the first mounting plate 320 close to the second mounting plate 330, and the second contact 200 is fixedly connected to a surface of the second mounting plate 330 close to the first mounting plate 320.
In one possible implementation of this embodiment, the band 300 has elasticity, and the first contact 100 and the second contact 200 are kept disconnected by the elasticity of the band 300.
In one possible embodiment of this embodiment, the band 300 is circular.
In summary, during the use process, the hoop member 300 hoops the battery 500, and the hoop member 300 drives the first contact 100 and the second contact 200 to close or open through the opening deformation, so as to feed back a physical damage (e.g. air blowing, swelling, etc.) signal of the battery 500 to the detection circuit 400 connected thereto.
It should be understood that the circuit switch structure in this embodiment may be directly connected to the main circuits of the cells 500, or the main circuits of the cells 500 and the detection circuit 400 are respectively connected to the circuit switch structure in this embodiment, when the circuit switch structure is connected to the main circuits of the cells 500, the first contact 100 and the second contact 200 are kept closed by using a normally closed contact, the first contact 100 and the second contact 200 are connected in series between the cells 500 arranged in the array, and when the cells 500 swell, the first contact 100 and the second contact 200 are opened, so as to protect the main circuits of the cells 500 and the cells 500.
The hoop member 300 in this embodiment is not limited to a ring structure, and may be a metal sheet on the fixing frame of the battery 500, for example, the metal sheet on the fixing frame of the battery 500 abuts against the outer wall of the battery 500, the first contact 100 and the second contact 200 are respectively fixed on the metal sheet of the fixing frame of the battery 500, and when the battery 500 bulges, the metal sheets are pushed to be separated, so that the first contact 100 and the second contact 200 are disconnected.
In the second embodiment of the present invention, a detection system is provided, to which the circuit switch structure in the first embodiment of the present invention is applied, and the detection system further includes a detection circuit 400, and the first contact 100 and the second contact 200 are electrically connected to the detection circuit 400, respectively.
The detection circuit 400 adopted by the detection system can use the detection circuit 400 of the battery 500 commonly used in the prior art, and is different from the prior art in that the detection circuit 400 is not directly connected with the battery 500, but is connected with the first contact 100 and the second contact 200, so that the purpose of detecting whether the battery 500 is physically damaged is achieved.
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 (9)

1. An electric circuit switch structure is characterized by comprising a first contact (100), a second contact (200) and a hoop member (300), wherein the hoop member (300) is used for hooping a battery (500), and the hoop member (300) drives the first contact (100) and the second contact (200) to be closed or opened through opening deformation.
2. The circuit switch structure according to claim 1, wherein a fracture (310) is formed on the hoop member (300), a first fracture surface (311) and a second fracture surface (312) are respectively formed on two inner side surfaces of the fracture (310), the first contact (100) is fixedly connected to the first fracture surface (311), the second contact (200) is fixedly connected to the second fracture surface (312), the first contact (100) and the second contact (200) are both metal contacts, the first contact (100) is abutted to the second contact (200), the first contact (100) is in insulated connection with the hoop member (300), the second contact (200) is in insulated connection with the hoop member (300), and the hoop member (300) drives the first contact (100) and the second contact (200) to be separated and disconnected through expansion deformation.
3. The circuit switch structure of claim 2, wherein a first mounting plate (320) and a second mounting plate (330) are fixedly connected to two ends of the break (310), respectively, the first contact (100) is fixedly connected to a surface of the first mounting plate (320) close to the second mounting plate (330), the second contact (200) is fixedly connected to a surface of the second mounting plate (330) close to the first mounting plate (320), a surface of the first mounting plate (320) close to the second mounting plate (330) forms the first section (311), and a surface of the second mounting plate (330) close to the first mounting plate (320) forms the second section (312).
4. A circuit switch structure according to claim 2 or 3, characterized in that the band (300) has elasticity, and the first contact (100) and the second contact (200) maintain a pressing force by the elasticity of the band (300).
5. The circuit switch structure according to claim 1, wherein a fracture (310) is formed on the hoop member (300), one end of the fracture (310) extends and bypasses the other end of the fracture (310) to form an extension portion (360) of a semi-enclosed structure, the first contact (100) is fixedly connected to one surface of the other end of the fracture (310) close to the extension portion (360), the second contact (200) is located on one surface of the extension portion (360) close to the other end of the fracture (310), the first contact (100) and the second contact (200) are both metal contacts, a gap is formed between the first contact (100) and the second contact (200), the first contact (100) is in insulated connection with the hoop member (300), the second contact (200) is in insulated connection with the hoop member (300), and the hoop member (300) drives the first contact (100) and the second contact (200) to lean against the hoop member (300) through deformation Closing the container.
6. The circuit switch structure of claim 5, wherein a first mounting plate (320) and a second mounting plate (330) are fixedly connected to two ends of the break (310), respectively, the second mounting plate (330) is fixedly connected to the end of the extension portion (360), the first contact (100) is fixedly connected to a surface of the first mounting plate (320) close to the second mounting plate (330), and the second contact (200) is fixedly connected to a surface of the second mounting plate (330) close to the first mounting plate (320).
7. Circuit switch structure according to claim 5 or 6, characterized in that said band (300) is elastic, said first contact (100) and said second contact (200) being kept open by the elastic force of said band (300).
8. Circuit switch structure according to claim 2 or 3 or 5 or 6, characterized in that said hoop (300) is circular.
9. A test system, characterized in that the circuit switch structure of any one of claims 1 to 8 is applied, and further comprises a test circuit (400), and the first contact (100) and the second contact (200) are electrically connected to the test circuit (400), respectively.
CN202011156561.2A 2020-10-26 2020-10-26 Circuit switch structure and detection system adopting same Pending CN112233918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011156561.2A CN112233918A (en) 2020-10-26 2020-10-26 Circuit switch structure and detection system adopting same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011156561.2A CN112233918A (en) 2020-10-26 2020-10-26 Circuit switch structure and detection system adopting same

Publications (1)

Publication Number Publication Date
CN112233918A true CN112233918A (en) 2021-01-15

Family

ID=74109362

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011156561.2A Pending CN112233918A (en) 2020-10-26 2020-10-26 Circuit switch structure and detection system adopting same

Country Status (1)

Country Link
CN (1) CN112233918A (en)

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