WO2024007561A1

WO2024007561A1 - Temperature sensor assembly

Info

Publication number: WO2024007561A1
Application number: PCT/CN2022/144381
Authority: WO
Inventors: 陈健宝; 张国江; 陆君高
Original assignee: 湖北亿纬动力有限公司
Priority date: 2022-07-04
Filing date: 2022-12-30
Publication date: 2024-01-11
Also published as: CN115031865A

Abstract

The present application discloses a temperature sensor assembly, comprising a sensing assembly (100), a flexible conductive member (200), and a cover plate (300). The sensing assembly (100) comprises a housing (110), terminals (120), and a thermistor (130). A mounting slot is formed in the housing (110), and a partition portion (111) extending in a first direction and dividing the mounting slot into an accommodating slot (112) and an insertion slot (113) is provided in the mounting slot. The thermistor (130) is provided in the accommodating slot (112) and is connected to first ends of the terminals (120). The flexible conductive member (200) passes through the insertion slot (113) in a second direction and is connected to second ends of the terminals (120), and the flexible conductive member (200) is configured to be connected to an external device. The cover plate (300) is detachably connected to the housing (110), and can be snap-fitted to the flexible conductive member (200) and cover the insertion slot (113), such that the flexible conductive member (200) is fixed in the insertion slot (113).

Description

Temperature sensor assembly

This application claims priority to the Chinese patent application with application number 202210781527.7, which was submitted to the China Patent Office on July 4, 2022. The entire content of the above application is incorporated into this application by reference.

Technical field

The present application relates to the technical field of temperature sensors, for example, to a temperature sensor assembly.

Background technique

The thermistor is a type of sensitive element. According to the difference in temperature coefficient, it is divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC). The core component of the temperature sensor is the thermistor. The typical characteristic of a thermistor is that it is sensitive to temperature and exhibits different resistance values at different temperatures. The positive temperature coefficient thermistor has a greater resistance value when the temperature is higher, and a negative temperature coefficient thermistor has a lower resistance value when the temperature is higher. They are both semiconductor devices.

At present, temperature sensors composed of thermistors are mostly collected using flexible circuit boards (FPC) or flexible flat cables (FFC). The NTC is welded to the flexible circuit board or PCB board. Once damaged, the thermistor cannot be replaced separately. Important components need to be replaced as a whole, and the maintenance cost is too high.

technical problem

The purpose of this application is to provide a temperature sensor assembly that enables individual replacement of important components such as thermistors and effectively reduces maintenance costs.

Technical solutions

This application provides a temperature sensor assembly, including a sensing assembly, a flexible conductive part and a cover plate. The sensing assembly includes a housing, terminals and a thermistor. Wherein, the housing is provided with an installation groove, and a partition extending along the first direction is provided in the installation groove, and the partition divides the installation groove into a receiving groove and a slot; the heat exchanger The sensitive resistor is arranged in the accommodating groove, and the thermistor is connected to the first end of the terminal. The flexible conductive member passes through the slot along the second direction and is electrically connected to the second end of the terminal. The flexible conductive member is configured to connect to an external device. The cover plate is detachably connected to the housing, and the cover plate can be engaged with the flexible conductive member and cover the slot to fix the flexible conductive member in the slot.

beneficial effects

Beneficial effects of this application: In the temperature sensor assembly provided by this application, the flexible conductive part can be detached from the housing by removing the cover plate, thereby facilitating the replacement of the flexible conductive part or sensing component and effectively reducing maintenance costs. In addition, the cover plate is snapped into the flexible conductive part so that the flexible conductive part is fixed in the slot, which can effectively avoid poor contact between the terminal and the flexible conductive part or the separation of the terminal and the flexible conductive part, thereby improving the temperature sensor Component reliability.

Description of the drawings

Figure 1 is a schematic structural diagram of the temperature sensor assembly provided by this application;

Figure 2 is an exploded schematic diagram of the temperature sensor assembly provided by this application;

Figure 3 is another exploded schematic diagram of the temperature sensor assembly provided by this application;

Figure 4 is a partial structural schematic diagram of the sensing component provided by this application;

Figure 5 is a partial structural cross-sectional view of the sensing assembly provided by this application.

Explanation of reference symbols:

100. Sensing component; 110. Housing; 111. Partition; 112. Accommodation groove; 1121. Support part; 1122. First relief groove; 113. Slot; 1131. Positioning groove; 1132. Guide groove; 1133. Second relief slot; 114. Partition plate; 1141. Second limiting slot; 115. Transverse clamping slot; 116. Longitudinal clamping slot; 120. Terminal; 121. Fixed part; 122. First clamping arm; 1221 , first conductive protrusion; 123, second clamp arm; 1231, second conductive protrusion; 130, thermistor; 140, thermal conductive seal;

200. Flexible conductive part; 210. Conductive part; 220. First limiting groove; 230. Positioning hole;

300. Cover plate; 310. Positioning protrusion; 320. Horizontal buckle; 330. Vertical buckle.

Embodiments of the invention

In the description of this application, unless otherwise explicitly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body. ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

In this application, unless otherwise explicitly stated and limited, the term "above" or "below" a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this embodiment, the terms "upper", "lower", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplified operation, rather than instructions. Or it is implied that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and have no special meaning.

Referring to FIGS. 1 to 4 , this embodiment provides a temperature sensor assembly, including a sensing assembly 100 . The sensing assembly 100 includes a housing 110 , a terminal 120 and a thermistor 130 . Among them, the housing 110 is provided with an installation groove, and a partition 111 extending along the first direction is provided in the installation groove. The partition 111 divides the installation groove into a receiving groove 112 and a slot 113; the thermistor 130 is provided in It is accommodated in the groove 112 , and the thermistor 130 is connected to the first end of the terminal 120 . In some embodiments, the temperature sensor assembly further includes a flexible conductive member 200 and a cover 300. The flexible conductive member 200 passes through the slot 113 along the second direction and is electrically connected to the second end of the terminal 120. The flexible conductive member 200 is configured to Connect external devices; the cover 300 is detachably connected to the housing 110, and the cover 300 can snap into place with the flexible conductive member 200 and cover the slot 113 to fix the flexible conductive member 200 in the slot 113.

In this embodiment, the flexible conductive member 200 is detachable from the housing 110 by disassembling the cover 300, thereby facilitating the replacement of the flexible conductive member 200 or the sensing component 100, effectively reducing maintenance costs. In addition, the cover 300 and the flexible conductive part 200 are snap-fitted to fix the flexible conductive part 200 in the slot 113, which can effectively avoid poor contact between the terminal 120 and the flexible conductive part 200 or separation of the terminal 120 and the flexible conductive part 200. situation occurs, thereby improving the reliability of the temperature sensor assembly.

In some embodiments, the first end of the terminal 120 is placed in the receiving groove 112 , and the second end of the terminal 120 extends along the second direction and passes through the partition 111 and is placed in the slot 113 .

Illustratively, thermistor 130 is a negative temperature coefficient thermistor. Of course, the thermistor 130 may also be other forms of thermistor 130, and no further limitations will be made here.

For example, the flexible conductive member 200 may be a flexible circuit board or a flexible flat cable. Of course, the flexible conductive member 200 can also be other conductive members, and there are no further limitations here.

For example, the shape of the housing 110 is a rectangular parallelepiped. The first direction may be the a direction in FIG. 1 , that is, the width direction of the housing 110 . The second direction may be the b direction in FIG. 1 , that is, the width direction of the housing 110 . Longitudinal direction.

In some embodiments, a mounting slot is provided on the upper surface of the housing 110 , and the side of the slot 113 facing away from the partition 111 is designed to be an opening, which is a plug-in interface for the flexible conductive member 200 , and the flexible conductive member 200 is inserted from the plug-in interface. into slot 113.

In this embodiment, as shown in FIGS. 2 to 3 , the housing 110 has the function of protecting the thermistor 130 . In some embodiments, a thermally conductive seal 140 is provided in the accommodating groove 112. The thermally conductive seal 140 and the accommodating groove 112 can form a closed cavity, and the thermistor 130 and the first end of the terminal 120 are both placed in the closed cavity. , while conducting heat, it cooperates with the housing 110 to more effectively protect the thermistor 130 .

For example, the thermally conductive seal 140 is formed by placing epoxy resin glue into the accommodating groove 112 and solidifying, so that the thermally conductive seal 140 tightly wraps the thermistor 130, reducing the risk of failure of the thermistor 130 and improving the efficiency of the thermistor. Thermistor 130 collects efficiency.

In this embodiment, continuing to refer to FIGS. 2 to 4 , there are two terminals 120 , and the flexible conductive member 200 is provided with two conductive parts 210 that are connected to the terminals 120 in one-to-one correspondence; wherein, the two conductive parts 210 A first limiting groove 220 is formed therebetween. A partition 114 extending along the second direction is provided in the slot 113. The partition 114 is placed in the first limiting groove 220, and the second ends of the two terminals 120 placed on both sides of the partition 114 respectively. In this embodiment, the partition 114 separates the two terminals 120 and the two conductive parts 210, effectively preventing the conductive parts 210 and the terminals 120 on different sides from coming into contact or virtual connection, which may cause the temperature sensor assembly to malfunction.

In some embodiments, the bottom of the first limiting groove 220 can abut an edge of the partition 114 facing the flexible conductive component 200 , and the partition 114 limits the size of the flexible conductive component 200 inserted into the insertion slot.

In some embodiments, the partition 114 may be disposed in a middle area of the slot 113 .

In some embodiments, a second limiting groove 1141 is provided on one edge of the partition 114 toward the flexible conductive member 200 , and the bottom of the second limiting groove 1141 abuts the bottom of the first limiting groove 220 , and Part of the flexible conductive part 200 is placed in the second limiting groove 1141 to prevent the flexible conductive part 200 from bending and lifting, which would make it difficult for the cover 300 to engage with the flexible conductive part 200 when it is installed on the housing 110 .

In this embodiment, the cover 300 is disposed at the slot 113 and covers the entire slot 113 to protect the terminals 120 and the flexible conductive member 200 in the slot 113 .

In some embodiments, a positioning protrusion 310 is provided on the mating surface of the cover 300 and the housing (110). The flexible conductive member 200 is provided with a positioning hole 230 that is matched with the positioning protrusion 310. The positioning protrusion 310 is disposed on the mating surface. The hook 310 is inserted into the positioning hole 230 to fix the flexible conductive component 200. The structure is simple and easy to assemble.

In some embodiments, the positioning protrusion 310 is provided in the middle area of the cover 300 along its width direction, and the positioning hole 230 is provided in the middle area of the flexible conductive member 200 along its width direction. When the flexible conductive member 200 is pulled, The force is uniform, effectively preventing the flexible conductive member 200 from being damaged locally due to uneven force.

In some embodiments, the bottom of the slot 113 is provided with a positioning groove 1131 that is matched with the positioning protrusion 310 . The end of the positioning protrusion 310 passes through the positioning hole 230 and is placed in the positioning groove 1131 . In this embodiment, the positioning protrusion 310 passes through one side of the flexible conductive part 200 and protrudes from the other side of the flexible conductive part 200. The positioning protrusion 310 cooperates with the positioning groove 1131, which can effectively prevent the flexible conductive part from 200 is separated from the positioning protrusion 310, and the flexible conductive member 200 is firmly fixed in the slot 113.

In some embodiments, the cross-sectional shapes of the positioning protrusions 310 and the positioning holes 230 may be, but are not limited to, oval, circular, or elongated.

In some embodiments, the ends of the positioning protrusions 310 are chamfered or rounded. It is convenient for the positioning protrusion 310 to pass through the positioning hole 230 and the positioning groove 1131 .

In this embodiment, continuing to refer to FIGS. 2 to 4 , a guide groove 1132 is provided on the inner surface of the slot 113 . The guide groove 1132 is configured to guide the movement of the flexible conductive member 200 in the second direction, so that the flexible conductive member 200 can move in the second direction. The conductive member 200 is accurately connected to the second end of the terminal 120 .

In some embodiments, the guide grooves 1132 are provided on two opposite inner surfaces of the slot 113 along the width direction of the housing 110 . When the flexible conductive member 200 is inserted into the slot 113 , the flexible conductive member 200 faces each other along the width direction. The two edges of are respectively placed in corresponding guide grooves 1132 to prevent the conductive portion 210 of the flexible conductive member 200 from swinging up and down along the height direction of the housing 110, causing difficulty in docking with the second end of the terminal 120.

In this embodiment, as shown in FIGS. 2 to 3 , the outer periphery of the cover 300 is provided with a transverse buckle 320 and a longitudinal buckle 330 , and the housing 110 is provided with a transverse buckle that engages with the transverse buckle 320 . 115 and the longitudinal slot 116 that is clamped with the longitudinal buckle 330. The transverse buckle 320 is clamped with the transverse slot 115 to realize the positioning of the cover 300 along the height direction of the housing 110. The longitudinal buckle 330 is connected with the longitudinal slot. 116 is engaged to realize the positioning of the cover 300 along the length direction and width direction of the housing 110 .

In some embodiments, transverse buckles 320 are provided at opposite side edges of the cover 300 along the width direction thereof and multiple transverse buckles 320 are provided at intervals along the length direction of the cover 300 . Transverse buckles 115 are provided in the slot 113 along the shell. The two opposite inner surfaces of the body 110 in the width direction, and the transverse slots 115 extend along the length direction of the housing 110. The transverse slots 115 are engaged with a plurality of transverse buckles 320 on the same side. The design of the transverse slots 115 This facilitates the molding of the housing 110 . In this embodiment, the extension length dimensions of the transverse buckles 320 along the length direction of the cover plate 300 may be the same or different, and will not be further limited here.

For example, two transverse buckles 320 are provided on the same side of the cover 300 .

In some embodiments, longitudinal buckles 330 are provided at opposite side edges of the cover 300 along its width direction, and multiple longitudinal buckles 116 are provided at intervals along the length direction of the cover 300 . The buckles 330 are arranged in one-to-one correspondence.

For example, there are two longitudinal buckles 330 on the same side of the cover 300 , one of which corresponds to the longitudinal buckle 330 and the corresponding longitudinal buckle 116 is placed at the slot 113 , and the other longitudinal buckle 330 corresponds to the longitudinal buckle 116 Placed at the partition 111. In this embodiment, the longitudinal buckles 330 located in the slot 113 have different extension lengths along the length direction of the cover 300. The longer longitudinal buckles 330 have high plasticity and strength, ensuring that the cover 300 and the housing 110 are connected. While improving the connection strength, it can effectively prevent other longitudinal buckles 330 from being deformed or broken. Of course, the extension length of the longitudinal buckle 330 located in the slot 113 along the length direction of the cover 300 can also be the same.

In some embodiments, the longitudinal slots 116 at both edges of the partition 111 along the width direction of the housing 110 are open-type on the side facing away from the partition 111 to prevent water accumulation in the longitudinal slots 116 causing The insulation of the housing 110 itself is reduced.

In some embodiments, the transverse buckles 320 and the longitudinal buckles 330 are staggered to ensure a stable connection between the cover 300 and the housing 110 .

In this embodiment, as shown in FIG. 5 , a support part 1121 is provided at the bottom of the accommodation groove 112 , a fixing part 121 is provided at the first end of the terminal 120 , the fixing part 121 is placed on the support part 1121 and the fixing part 121 A thermistor 130 is provided on the support portion 1121 , and a first relief groove 1122 is formed between the side of the support portion 1121 facing the partition 111 and the accommodating groove 112 . In this embodiment, the terminal 120 is installed from the side of the housing 110 where the slot 113 is provided. The function of the support portion 1121 is to ensure that the portion of the terminal 120 at the accommodating groove 112 and the partition 111 remains horizontal and does not bend. , to facilitate the installation of terminal 120. In addition, a first relief groove 1122 is formed between the side of the support portion 1121 facing the partition 111 and the accommodating groove 112 to reduce the contact friction when the terminal 120 is installed, further facilitates the installation of the terminal 120, and can make the epoxy The thermally conductive seal 140 formed after the resin glue is cured surrounds the terminal 120 so that the first end of the terminal 120 is stably placed in the accommodating groove 112 .

For example, the thermistor 130 can be fixed on the fixing part 121 of the terminal 120 by laser welding. Of course, the thermistor 130 can also be fixed on the fixing portion 121 of the terminal 120 in other ways, and there are no further limitations here.

In some embodiments, two supporting parts 1121 are provided in one-to-one correspondence with the terminals 120 .

In some embodiments, the first end of the terminal 120 and the side of the support portion 1121 facing the partition 111 are chamfered or rounded, which effectively prevents the terminal 120 from getting stuck with the support portion 1121 during installation. Assembly efficiency.

In this embodiment, as shown in FIG. 5 , the second end of the terminal 120 includes a first clamp arm 122 and a second clamp arm 123 , and the flexible conductive member 200 is inserted into the first clamp arm 122 and the second clamp arm 123 . to facilitate the connection between the flexible conductive component 200 and the terminal 120 .

In some embodiments, the terminal 120 is formed by bending and stamping metal spring pieces, which has a simple structure and facilitates mass production. For example, the terminal 120 may be formed by bending and punching two metal sheets, or may be formed by bending and punching one metal sheet. For example, the metal sheet may be made of metallic copper. Of course, the material of the metal sheet can also be other conductive materials, and there are no further limitations here.

In some embodiments, the first clamp arm 122 is located below the second clamp arm 123. The first clamp arm 122 is provided with a first conductive protrusion 1221 on one side facing the second clamp arm 123. The second clamp arm 123 faces the second clamp arm 123. One side of a clamping arm 122 is provided with a second conductive protrusion 1231 corresponding to the first conductive protrusion 1221. The first conductive protrusion 1221 and the second conductive protrusion 1231 are both in contact with the conductive portion 210 of the flexible conductive member 200. The outer surface contacts to clamp the conductive portion 210, effectively improving the stability of the electrical connection between the terminal 120 and the flexible conductive piece 200.

In some embodiments, the end of the second clamp arm 123 is bent away from the first clamp arm 122 to form a second conductive protrusion 1231 to facilitate the conductive portion 210 to be inserted into the first clamp arm 122 and the second clamp arm. between 123.

In some embodiments, two second relief grooves 1133 are provided at the bottom of the slot 113. The second relief grooves 1133 are provided in one-to-one correspondence with the terminals 120, and the first clamping arm 122 is placed in the second relief grooves 1133. inside, and the thickness of the first clamp arm 122 is less than the depth of the second relief groove 1133, that is, the surface of the first clamp arm 122 facing the second clamp arm 123 is set lower than the second relief groove 1133, and the flexible conductive member 200 is inserted into During the insertion process in the slot 113 , interference between the first clamping arm 122 and the conductive portion 210 of the flexible conductive component 200 is effectively avoided, which affects the assembly efficiency.

In some embodiments, the first conductive protrusion 1221 protrudes from the second relief groove 1133 so that the first conductive protrusion 1221 can contact the conductive portion 210 of the flexible conductive member 200 .

Claims

A temperature sensor assembly, including:

Sensing component (100), the sensing component (100) includes:

Housing (110), the housing (110) is provided with an installation groove, and a partition (111) extending along the first direction is provided in the installation groove, and the partition (111) connects the installation The slot is divided into accommodating slot (112) and slot (113);

Terminal (120); and

Thermistor (130), the thermistor (130) is arranged in the accommodating groove (112), and the thermistor (130) is connected to the first end of the terminal (120);

Flexible conductive member (200), the flexible conductive member (200) passes through the slot (113) along the second direction and is electrically connected to the second end of the terminal (120), the flexible conductive member (200) ) set to connect external devices; and

Cover plate (300), the cover plate (300) is detachably connected to the housing (110), the cover plate (300) can be snap-joined with the flexible conductive member (200) and cover the slot (113) so that the flexible conductive member (200) is fixed in the slot (113).
The temperature sensor assembly according to claim 1, wherein there are two terminals (120), and the flexible conductive member (200) is provided with two conductive parts connected to the terminals (120) in one-to-one correspondence. (210); among them,

A first limiting groove (220) is formed between the two conductive parts (210), and a partition (114) extending along the second direction is provided in the slot (113). The plate (114) is placed in the first limiting groove (220), and the second ends of the two terminals (120) are placed on both sides of the partition (114).
The temperature sensor assembly according to claim 2, wherein a second limiting groove (1141) is provided on one edge of the partition (114) toward the flexible conductive member (200), and the second limiting groove (1141) is The bottom of the groove (1141) is in contact with the bottom of the first limiting groove (220), and part of the flexible conductive member (200) is placed in the second limiting groove (1141).
The temperature sensor assembly according to claim 1, wherein a positioning protrusion (310) is provided on the mating surface of the cover plate (300) and the housing (110), and the flexible conductive member (200) There is a positioning hole (230) matching and connected with the positioning protrusion (310). The positioning protrusion (310) is inserted into the positioning hole (230) to fix the flexible conductive member (200). .
The temperature sensor assembly according to claim 4, wherein the bottom of the slot (113) is provided with a positioning groove (1131) that is matched with the positioning protrusion (310), and the positioning protrusion (310) ) is passed through the positioning hole (230) and placed in the positioning groove (1131).
The temperature sensor assembly according to claim 1, wherein a guide groove (1132) is provided on the inner surface of the slot (113), and the guide groove (1132) is configured to guide the flexible conductive member (200) ) movement along the second direction.
The temperature sensor assembly according to claim 1, wherein the bottom of the accommodation groove (112) is provided with a support part (1121), and the first end of the terminal (120) is provided with a fixing part (121), The fixed part (121) is placed on the supporting part (1121) and the thermistor (130) is provided on the fixed part (121), and the supporting part (1121) faces the partition part (111) A first relief groove (1122) is formed between the side surface and the accommodation groove (112).
The temperature sensor assembly according to claim 1, wherein the second end of the terminal (120) includes a first clamp arm (122) and a second clamp arm (123), and the flexible conductive member (200) is plugged into Between the first clamping arm (122) and the second clamping arm (123).
The temperature sensor assembly according to claim 8, wherein a first conductive protrusion (1221) is provided on a side of the first clamp arm (122) facing the second clamp arm (123), and the second The side of the clamp arm (123) facing the first clamp arm (122) is provided with a second conductive protrusion (1231) corresponding to the first conductive protrusion (1221). The first conductive protrusion (1221) and the second conductive protrusion (1231) both abut against the outer surface of the flexible conductive member (200) to clamp the flexible conductive member (200).
The temperature sensor assembly according to claim 9, wherein an end of the second clamp arm (123) is bent away from the first clamp arm (122) to form the second conductive protrusion (1231 ).
The temperature sensor assembly according to claim 9, wherein a second relief groove (1133) is provided at the bottom of the slot (113), and the second relief groove (1133) and the terminal (120) ), the first clamp arm (122) is placed in the second relief groove (1133), and the thickness of the first clamp arm (122) is smaller than the second relief groove (1133) depth.
The temperature sensor assembly according to claim 11, wherein the first conductive protrusion (1221) protrudes from the second relief groove (1133).
The temperature sensor assembly according to claim 1, wherein the outer peripheral part of the cover plate (300) is provided with transverse buckles (320) and longitudinal buckles (330), and the housing (110) is provided with a The transverse buckle (320) snaps into a transverse slot (115) and the longitudinal buckle (330) snaps into a longitudinal slot (116).
The temperature sensor assembly according to claim 13, wherein the transverse buckles (320) and the longitudinal buckles (330) are arranged staggered.
The temperature sensor assembly according to any one of claims 1 to 14, wherein a thermally conductive seal (140) is provided in the accommodation groove (112), and the thermally conductive seal (140) can be connected with the accommodation groove (112). The groove (112) forms a sealed cavity, and the thermistor (130) and the first end of the terminal (120) are placed in the sealed cavity.