CN210692429U - Temperature protector - Google Patents
Temperature protector Download PDFInfo
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- CN210692429U CN210692429U CN201921333028.1U CN201921333028U CN210692429U CN 210692429 U CN210692429 U CN 210692429U CN 201921333028 U CN201921333028 U CN 201921333028U CN 210692429 U CN210692429 U CN 210692429U
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- temperature
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Abstract
The utility model relates to a battery protection device, in particular to a temperature protector, which comprises a static contact piece assembly, a temperature sensing element, a movable contact piece and a cover plate, wherein the static contact piece assembly comprises an insulating seat, a static contact piece and a PTC (positive temperature coefficient) placing groove, the static contact piece is connected with the insulating seat, the PTC placing groove is arranged above the static contact piece, and the PTC placing groove is used for placing a PTC heating element; the temperature sensing element is arranged above the PTC placing groove; the movable contact piece is arranged above the temperature sensing element, one end of the movable contact piece is connected with or disconnected with the static contact piece, and the cover plate is matched with the insulating seat to form a closed space. The embodiment not only can play the protection of circuit overcurrent and overtemperature, but also can play the effect of resetting, and the volume of this embodiment is littleer moreover, can satisfy the demand of market miniaturization.
Description
Technical Field
The utility model relates to a battery protection device specifically is a temperature protector.
Background
Most of protectors are applied to electric tools such as motors, ballasts and the like, along with the increase of electronic products, rechargeable batteries are widely applied, and the product size of the current protector in the current market cannot meet the requirement of the rechargeable battery industry on product miniaturization.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a product volume is great among the solution prior art, can't satisfy the demand that market is miniaturized to the product, the utility model provides a temperature protector, product structure volume is less.
In order to solve the technical problem, the utility model discloses a technical scheme:
a temperature protector, comprising:
the static contact piece assembly comprises an insulating seat, a static contact piece and a PTC (positive temperature coefficient) placing groove, wherein part of the static contact piece is placed at the bottom of the insulating seat, the PTC placing groove is arranged above the static contact piece, and the PTC placing groove is used for placing a PTC heating element;
the temperature sensing element is arranged above the PTC placing groove;
the movable contact piece is arranged above the temperature sensing element, and one end of the movable contact piece is connected with or disconnected from the static contact piece under the action of the temperature sensing element;
the cover plate is arranged above the movable contact spring and matched with the insulating base to form a closed space, the cover plate comprises a supporting sheet, the supporting sheet is fixed below the cover plate and provided with two downward protruding points, the two downward protruding points are respectively a first point and a second point, the first point is connected with the first section of the movable contact spring, and the second point is connected with or disconnected with the second section of the movable contact spring.
Furthermore, the static contact is a bending structure, the bending structure comprises a first edge, a second edge and a third edge, one end of the first edge is connected with one end of the third edge through the second edge, and the first edge is fixed at the bottom of the insulating seat.
Further, a first edge of the static contact piece is provided with a raised supporting point, and the supporting point is connected with the PTC heating element.
Further, the movable contact piece comprises three raised contact points, the three contact points are respectively a movable contact point, a first contact point and a second contact point, the movable contact point is connected with or disconnected with the fixed contact piece, and the first contact point and the second contact point are respectively connected with or disconnected with two ends of the temperature sensing element.
Further, a movable connection point is arranged between the first contact point and the second contact point of the movable contact piece.
Further, the volume of the movable contact is larger than that of the first contact and the second contact, and the movable contact is arranged in a mode of compounding silver alloy, welding or riveting the silver alloy and silver plating the strip.
Further, the length of the temperature sensing element is greater than the diameter of the PTC placement slot.
Further, the height of the first point of the support sheet is greater than the height of the second point.
Further, the periphery of the cover plate is provided with a small protruding welding point for ultrasonic welding, and the cover plate and the insulating base form a closed space through ultrasonic welding.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up static contact piece subassembly, static contact piece subassembly includes insulating seat, static contact and PTC standing groove, and static contact fixed connection insulating seat, PTC standing groove set up in the top of static contact, and temperature-sensing element sets up in the top of PTC standing groove, and the movable contact sets up in temperature-sensing element's top, then places the apron in the top of movable contact, fixes a position apron, movable contact and static contact piece subassembly through the connecting piece and fixes a position, the utility model provides a great problem of product size among the prior art, the utility model provides a temperature protector's structure is compacter, can satisfy the demand of market miniaturization.
Drawings
Fig. 1A is a schematic diagram of a closed state of a temperature protector according to an embodiment of the present invention;
fig. 1B is a schematic diagram of a disconnected state of the temperature protector according to an embodiment of the present invention;
fig. 2A is a top view of a stationary contact assembly according to an embodiment of the present invention;
fig. 2B is a front view of a stationary contact assembly according to an embodiment of the present invention;
fig. 3 is a front view of the movable contact spring provided in the embodiment of the present invention;
fig. 4 is a side view of a cover plate according to an embodiment of the present invention.
In the figure, 1 is a static contact, 2 is a moving contact, 3 is a PTC placing groove, 4 is a PTC heating element, 5 is a temperature sensing element, 6 is a supporting point, 7 is a moving contact, 8 is a first contact point, 9 is a second contact point, 10 is a cover plate, 11 is a static contact, and 12 is a movable connecting point.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1A and fig. 1B, the embodiment of the utility model provides a temperature protector, including static contact subassembly, temperature-sensing element 5, movable contact piece 2 and apron 10, wherein, static contact subassembly includes the insulating seat, static contact 1 and PTC standing groove 3, the insulating seat is connected to static contact 1, PTC standing groove 3 sets up in static contact 1 top, PTC standing groove 3 is used for placing PTC heating element 4, temperature-sensing element 5 sets up the top at PTC standing groove 3, movable contact piece 2 sets up the top at temperature-sensing element 5, static contact piece 1 is connected or breaks off to the one end of movable contact piece 2, apron 10 sets up the top at movable contact piece 2, the temperature protector's that this embodiment provided structure is compacter, can satisfy the demand of market miniaturization.
As a specific example of the static contact assembly of the present embodiment, as shown in fig. 2A and 2B, the static contact assembly includes an insulating base, a static contact 1 and a PTC placing groove 3, the static contact 1 is injection-molded at the bottom of the insulating base, the insulating base is provided with a counter bore, the counter bore is located at the upper surface of the static contact 1, the PTC placing groove 3 is located at the counter bore position, that is, the PTC placing groove 3 is located at the surface of the static contact 1, and the PTC heating element 4 is placed in the PTC placing groove 3.
Specifically, the static contact 1 is a bending structure, the bending structure comprises a first edge, a second edge and a third edge, one end of the first edge is connected with one end of the third edge through the second edge, the first edge is injected on the insulating base, the first edge of the static contact 1 is provided with a raised supporting point 6, and the supporting point 6 is used for supporting the PTC heating element 4, so that the PTC heating element 4 is in better contact with the static contact 1.
Further, the surface of the static contact piece 1 is provided with a static contact 11, and the static contact 11 is provided with a composite silver alloy, a welding silver alloy and a strip silver coating, so that the conductive effect of the static contact 11 is better, and the static contact 11 can be arranged into a convex structure or not.
Specifically, the PTC placing groove 3 is provided above the stationary contact 1, and the PTC placing groove 3 is a raised circular ring structure for supporting the temperature sensing element 5.
As a specific embodiment of the temperature sensing element 5 of this embodiment, as shown in fig. 1A and fig. 1B, the temperature sensing element 5 is placed on the PTC placing groove 3, the length of the temperature sensing element 5 is greater than the diameter of the PTC placing groove 3, when the circuit has an overcurrent due to a fault, the PTC heating element 4 increases the temperature due to the increase of the heating power, when the temperature exceeds the preset temperature, the resistance will suddenly increase, the current in the circuit is rapidly reduced to a safe value, meanwhile, since the PTC heating element 4 heats and transfers the heat to the temperature sensing element 5, when the temperature reaches the set temperature of the temperature sensing element 5, the temperature sensing element 5 deforms, thereby jacking the movable contact 2 to open the circuit, so that this embodiment can simultaneously perform the over-temperature protection and the overcurrent protection.
Further, the temperature sensing element 5 provided by this embodiment can also realize a reset function, when the circuit is powered off, the temperature drops, the temperature sensing element 5 recovers the state before deformation, and the movable contact piece 2 drops, so that the movable contact piece 2 and the static contact piece 1 are in a normally closed state.
As a specific example of the movable contact piece 2 of the present embodiment, as shown in fig. 3, the movable contact piece 2 includes three convex contact points, the three contact points are a movable contact point 7, a first contact point 8 and a second contact point 9, respectively, the volume of the movable contact point 7 is larger than the volume of the first contact point 8 and the second contact point 9, the movable contact point 7 is disposed in a manner of composite silver alloy, welding or riveting silver alloy, strip silver plating, the movable contact point 7 connects or disconnects the stationary contact point 11 of the stationary contact piece 1, and the first contact point 8 and the second contact point 9 connect or disconnect both ends of the temperature sensing element 5, respectively, for supporting the temperature sensing element 5.
Further, a movable connection point 12 is arranged between the first contact point 8 and the second contact point 9, when the circuit is over-current and/or over-temperature, the temperature sensing element 5 is deformed, so that the second section of the movable contact piece 2 is lifted, the movable contact 7 is disconnected with the fixed contact 11, the circuit is opened, and the circuit is protected.
As a specific example of the cover plate 10 of the present embodiment, as shown in fig. 1A and 1B, the cover plate 10 is positioned with the insulating base by a positioning pin.
Further, as shown in fig. 4, a micro-convex welding point for ultrasonic welding is provided at the periphery of the cover plate 10, the cover plate 10 and the insulating base form a closed space by ultrasonic welding, the cover plate 10 is positioned with the movable contact piece 2 by a positioning pin, and the movable contact piece 2 is clamped in a positioning groove of the cover plate 10.
Further, as shown in fig. 1A and 1B, the cover plate 10 further includes a supporting sheet fixed below the cover plate 10, the supporting sheet is provided with two downward protruding points, the two points are respectively a first point and a second point, the first point is connected with the first section of the movable contact 2, and the second point is connected with or disconnected from the second section of the movable contact 2. The height of the first point of the supporting sheet is larger than that of the second point, and a moving space is provided for the second section of the movable contact piece 2.
In conclusion, the temperature protector provided by the embodiment can not only play the role of overcurrent and overtemperature protection of a circuit, but also play the role of resetting, and the volume of the embodiment is smaller, so that the requirement of market miniaturization can be met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A temperature protector, comprising:
the static contact piece assembly comprises an insulating seat, a static contact piece (1) and a PTC (positive temperature coefficient) placing groove (3), wherein part of the static contact piece (1) is placed at the bottom of the insulating seat, the PTC placing groove (3) is arranged above the static contact piece (1), and the PTC placing groove (3) is used for placing a PTC heating element (4);
the temperature sensing element (5), the temperature sensing element (5) is arranged above the PTC placing groove (3);
the movable contact piece (2) is arranged above the temperature sensing element (5), and one end of the movable contact piece (2) is connected with or disconnected from the static contact piece (1) under the action of the temperature sensing element (5);
the cover plate (10) is arranged above the movable contact spring (2), the cover plate (10) is matched with the insulating base to form a closed space, the cover plate (10) comprises a supporting piece, the supporting piece is fixed below the cover plate (10), the supporting piece is provided with two downward protruding points, the two downward protruding points are respectively a first point and a second point, the first point is connected with the first section of the movable contact spring (2), and the second point is connected with or disconnected with the second section of the movable contact spring (2).
2. Temperature protector according to claim 1, characterized in that the static contact (1) is a bent structure, the bent structure comprises a first edge, a second edge and a third edge, one end of the first edge is connected with one end of the third edge through the second edge, and the first edge is fixed at the bottom of the insulating base.
3. Temperature protector according to claim 2, characterized in that the first edge of the static contact (1) is provided with a raised support point (6), which support point (6) is connected to the PTC heating element (4).
4. A temperature protector according to claim 3, characterised in that the moving contact (2) comprises three raised contact points, a moving contact (7), a first contact point (8) and a second contact point (9), respectively, the moving contact (7) connecting or disconnecting the stationary contact (1), the first contact point (8) and the second contact point (9) connecting or disconnecting the two ends of the temperature sensing element (5), respectively.
5. A temperature protector according to claim 4, characterised in that a movable connection point (12) is provided between the first contact point (8) and the second contact point (9) of the movable contact (2).
6. A temperature protector according to claim 5, characterised in that the volume of the moving contact (7) is larger than the volume of the first contact point (8) and the second contact point (9), the moving contact (7) being arranged in a composite silver alloy, welded or riveted silver alloy, strip silver plating.
7. The temperature protector according to claim 1, characterized in that the length of the temperature-sensitive element (5) is greater than the diameter of the PTC placement slot (3).
8. The temperature protector of claim 1, wherein the height of the first point of the support sheet is greater than the height of the second point.
9. The temperature protector according to claim 1, the cover plate (10) is provided with a minute projection welding point for ultrasonic welding at the periphery thereof, and the cover plate (10) and the insulating base form a closed space by ultrasonic welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333028.1U CN210692429U (en) | 2019-08-16 | 2019-08-16 | Temperature protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921333028.1U CN210692429U (en) | 2019-08-16 | 2019-08-16 | Temperature protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210692429U true CN210692429U (en) | 2020-06-05 |
Family
ID=70902924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921333028.1U Active CN210692429U (en) | 2019-08-16 | 2019-08-16 | Temperature protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210692429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782386A (en) * | 2020-06-09 | 2021-12-10 | 佛山市英格尔科技有限公司 | Miniature thermal protector for battery |
| CN113921333A (en) * | 2021-10-28 | 2022-01-11 | 江苏常胜电器股份有限公司 | Wide temperature range self-sustaining formula protector |
-
2019
- 2019-08-16 CN CN201921333028.1U patent/CN210692429U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782386A (en) * | 2020-06-09 | 2021-12-10 | 佛山市英格尔科技有限公司 | Miniature thermal protector for battery |
| CN113782386B (en) * | 2020-06-09 | 2024-05-17 | 佛山市英格尔科技有限公司 | Micro thermal protector for battery |
| CN113921333A (en) * | 2021-10-28 | 2022-01-11 | 江苏常胜电器股份有限公司 | Wide temperature range self-sustaining formula protector |
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