Temperature detection structure and steering wheel

Abstract

The utility model discloses a temperature detection structure and a steering wheel. The temperature detection structure comprises a first film unit, a heat conduction unit and a thermosensitive unit. Wherein the first film unit is arranged at a heating position or an abnormal heating position of the to-be-detected structure, and the abnormal heating position is the heating position when the to-be-detected structure is abnormal; the heat conduction unit is arranged on the side, away from the to-be-detected structure, of the first film unit along the first film unit, and the heat conduction unit is arranged corresponding to the heating position or the abnormal heating position; the thermosensitive unit is arranged on the side, away from the first film unit, of the heat conduction unit, and a thermosensitive probe of the thermosensitive unit makes contact with the heat conduction unit and is used for detecting the surface temperature of the heat conduction unit through the thermosensitive probe. According to the utility model, the problem that the correct temperature of the heating position or the abnormal heating position cannot be correctly detected due to the fact that the thermosensitive unit is easily staggered with the heating position in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a temperature detection structure and a steering wheel. Background Art

[0002] Thermistors are products made of sensitive materials whose physical properties change with temperature. In the automotive field, they are usually installed on structures that require temperature detection, such as steering wheel heating layers and new energy batteries, to perform temperature detection on structures that require temperature detection.

[0003] In the prior art, the probe of the thermistor is usually overlapped or abutted with the structure to be detected, such as abutting the probe of the thermistor with the heating wire of the steering wheel heating layer or the outer wall of the new energy battery to detect the temperature of the structure to be detected. However, when the thermistor is in use, it is difficult for the thermistor to accurately measure the correct temperature of the structure to be detected due to the displacement of the thermistor and the size of the thermistor probe. For example, when the probe of the thermistor is displaced from the heating wire of the steering wheel heating layer, the thermistor cannot correctly detect the temperature of the steering wheel heating layer.

[0004] Based on this, a new technical solution is needed. Utility Model Content

[0005] In view of this, the embodiments of the present invention provide a temperature detection structure and a steering wheel to at least solve the problem in the prior art that thermistors cannot accurately measure the correct temperature of the structure to be detected.

[0006] The utility model embodiment provides the following technical solutions:

[0007] The present invention provides a temperature detection structure, comprising:

[0008] A first membrane unit, wherein the first membrane unit is disposed at a heating position or an abnormal heating position of the structure to be detected, wherein the abnormal heating position is a position where the structure to be detected generates heat when it is abnormal;

[0009] A heat conduction unit, the heat conduction unit is arranged on a side of the first film unit away from the structure to be detected, and the heat conduction unit is arranged corresponding to the heating position or the abnormal heating position, and the heat conduction unit is used to absorb the heat released from the heating position or the abnormal heating position, and make the heat evenly distributed on the heat conduction unit;

[0010] The thermistor unit is arranged on a side of the heat conductive unit away from the first membrane unit, and a thermistor probe of the thermistor unit is in contact with the heat conductive unit, and is used to detect the surface temperature of the heat conductive unit through the probe of the thermistor unit.

[0011] Furthermore, the first membrane unit is provided with an adhesive layer on a side close to the structure to be detected and a side away from the structure to be detected;

[0012] The adhesive layer disposed on the side close to the structure to be detected is used to adhere the first membrane unit to the structure to be detected, and the adhesive layer disposed on the side away from the structure to be detected is adhesively connected to the heat conduction unit.

[0013] Furthermore, the size of the heat-conducting unit is smaller than that of the first membrane unit, and the adhesive layer arranged on the side away from the structure to be detected is adhesively connected to the heat-conducting unit.

[0014] Furthermore, the heat transfer unit comprises:

[0015] a placement portion, the placement portion being arranged on a side of the first membrane unit away from the structure to be detected and being arranged corresponding to the heating position or the abnormal heating position;

[0016] A heat conducting portion is disposed on the outer periphery of the placement portion along the circumferential direction of the placement portion, and is used to increase the heat conducting area of ​​the heat conducting unit.

[0017] Furthermore, there are a plurality of heat-conducting parts, which are arranged at intervals on the periphery of the placement part to facilitate fitting with the heating position or the abnormal heating position.

[0018] Furthermore, the heat conducting unit is in the shape of petals.

[0019] Furthermore, the temperature detection structure also includes:

[0020] The second membrane unit is arranged to cover the first membrane unit, the heat conducting unit and the thermosensitive unit.

[0021] Furthermore, the temperature detection structure also includes:

[0022] A reinforcing plate is disposed on the first membrane unit and connected to the wire of the thermosensitive unit through a soldering pad, wherein the soldering pad is used to connect to an external connector.

[0023] The embodiment of the utility model further provides a steering wheel, comprising a steering wheel frame and a heating layer arranged on the steering wheel frame, and further comprising:

[0024] As in any of the above-mentioned temperature detection structures, the temperature detection structure is arranged on the heating layer, and the heat conduction unit in the temperature detection structure is arranged corresponding to at least one heating wire in the heating layer.

[0025] Furthermore, the length and width of the heat conducting unit are both greater than the maximum interval between the heating wires in the heating layer.

[0026] Compared with the prior art, the at least one technical solution adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0027] The utility model discloses a temperature detection structure, in which a heat-conducting unit is installed on a structure to be detected through a first membrane unit, and the heat-conducting unit is arranged corresponding to a heating position or the abnormal heating position, so that the heat-conducting unit can absorb the heat released at the heating position or the abnormal heating position and increase the temperature, and finally a thermistor unit judges the temperature at the heating position or the abnormal heating position according to the temperature of the heat-conducting unit, thereby solving the problem in the prior art that the thermistor unit is easily misaligned with the heating position, resulting in the inability to correctly detect the correct temperature of the heating position or the abnormal heating position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A top view of a temperature detection structure according to an embodiment of the utility model;

[0030] Figure 2 This is an exploded view of a temperature detection structure of an embodiment of the utility model;

[0031] Figure 3 This is a schematic structural diagram of a heat transfer unit according to an embodiment of the present utility model (I);

[0032] Figure 4 This is a schematic structural diagram of a heat transfer unit according to an embodiment of the present utility model (II);

[0033] Figure 5 A comparison diagram of a heat transfer unit and a steering wheel according to an embodiment of the utility model;

[0034] Figure 6 This is a schematic structural diagram of a heat transfer unit installed on a steering wheel heating layer in an embodiment of the utility model.

[0035] The accompanying drawings of the embodiments of the present invention are as follows:

[0036] 10. The first membrane unit;

[0037] 20. heat transfer unit; 21. placement portion; 22. heat transfer portion;

[0038] 30. Thermal unit;

[0039] 40. The second membrane unit;

[0040] 50. Reinforcement plate;

[0041] 60. Heating layer; 61. Heating wire. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0043] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0044] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0045] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0046] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0047] Currently, the temperature detection of the steering wheel heating layer is mostly based on NTC thermistors. Due to the space limitations of the steering wheel, the temperature detection of the steering wheel heating layer is usually performed by placing a single thermistor (NTC element) at a specific position of the heating layer, and making the probe of the thermistor overlap or abut against the heating wires that make up the heating layer, so that the thermistor can detect the temperature of the heating layer in time. Finally, the thermistor feeds back the temperature to the control unit to achieve temperature adaptive adjustment of the steering wheel.

[0048] There are gaps between the heating wires in the heating layer. When the steering wheel is in use, the thermistor will move on the heating layer, causing the probe of the thermistor to separate from the heating wires, that is, the probe of the thermistor is shifted to the non-heating area between the heating wires. This undoubtedly causes the probe of the thermistor to be unable to accurately detect the temperature of the heating layer, making it impossible for the thermistor to accurately detect the temperature change of the heating layer, that is, the temperature data detected by the thermistor cannot represent the temperature change of the entire steering wheel heating layer. Therefore, when the thermistor cannot detect the correct temperature of the heating layer for a long time, it will also cause accelerated degradation of the heating layer.

[0049] Based on this, this specification embodiment proposes a processing solution: Figure 1 As shown, a temperature detection structure of the utility model adopts a heat conducting unit 20 to transfer the temperature of a heating position or an abnormal heating position, and enables a thermistor unit 30 to detect the temperature of a heating position or an abnormal heating position through the heat conducting unit 20, thereby improving the detection accuracy of the steering wheel heating layer under different heating conditions.

[0050] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0051] Example 1

[0052] like Figures 1-2 As shown, the embodiment of the utility model provides a temperature detection structure, including a first membrane unit 10, a heat conduction unit 20 and a thermistor unit 30. The first membrane unit 10 is arranged at a heating position or an abnormal heating position of the structure to be detected, wherein the abnormal heating position is a position where the structure to be detected generates heat when it is abnormal; the heat conduction unit 20 is arranged along the first membrane unit 10 at a side of the first membrane unit 10 away from the structure to be detected, and the heat conduction unit 20 is arranged corresponding to the heating position or the abnormal heating position, and the heat conduction unit 20 is used to absorb the heat released at the heating position or the abnormal heating position; the thermistor unit 30 is arranged at a side of the heat conduction unit 20 away from the first membrane unit 10, and the thermistor probe of the thermistor unit 30 is in contact with the heat conduction unit 20, and is used to detect the surface temperature of the heat conduction unit 20 through the thermistor probe.

[0053] Among them, the structure to be tested can be a heating structure such as a steering wheel heating layer, a new energy vehicle battery, etc.

[0054] Among them, the abnormal heating position can be the position where the new energy vehicle battery generates heat when it is punctured or impacted. By increasing the heat conduction area of ​​the new energy vehicle battery through the heat conduction unit 20, it is possible to quickly locate whether the new energy vehicle battery is heated.

[0055] The first membrane unit 10 is used to fix the temperature detection structure on the structure to be detected, such as fixed to the steering wheel or fixed to the battery structure to be detected.

[0056] The connection method between the first membrane unit 10 and the structure to be detected includes but is not limited to bonding.

[0057] Among them, the first membrane unit 10 is made of a thermally conductive material, and when the first membrane unit 10 is connected to the structure to be detected by bonding, the glue used is a heat-resistant glue, such as polyimide adhesive, heat-resistant epoxy adhesive, phenolic resin adhesive, urea-formaldehyde resin adhesive, silicone adhesive, etc.

[0058] The first membrane unit 10 may be made of plastic.

[0059] At least one end of the first membrane unit 10 covers the heating position or the abnormal heating position, so that the heat conduction unit 20 installed thereon can absorb the heat released from the heating position or the abnormal heating position.

[0060] The heat conducting unit 20 is used to absorb the heat released from the heating position or the abnormal heating position and increase its own temperature, so that the thermistor unit 30 installed on the heat conducting unit 20 can accurately detect the temperature of the heating position or the abnormal heating position.

[0061] The heat conduction unit 20 has a certain area, which can cover the heating position or the abnormal heating position.

[0062] For example, when the heating position is a heating wire, the minimum width or length of the heat conducting unit 20 is greater than the interval between adjacent heating wires to avoid the heat conducting unit 20 being unable to directly obtain the heat released by the heating wire after displacement.

[0063] The heat conducting unit 20 is made of a heat conducting material, such as graphene, metal foil (copper foil), carbon fiber, organic silicon or a composite material.

[0064] The heat conducting unit 20 is a sheet-like structure, which can be deformed to a certain extent according to the shape of the heating position or abnormal heating position of the structure to be detected, so as to fit closely with the heating position or abnormal heating position.

[0065] The thermistor 30 may be a thermistor such as NTC or PTC.

[0066] In some of the embodiments, the probe of the thermal sensing unit 30 may be disposed at any position on the thermal conductive unit 20 .

[0067] Preferably, the probe of the thermal sensing unit 30 is disposed at the center of the heat conducting unit 20 .

[0068] The utility model uses the heat conduction unit 20 to conduct away the heat released at the heating position or the abnormal heating position, so that the thermistor unit 30 can timely and correctly detect the temperature of the heating position or the abnormal heating position through the heat conduction unit 20, thereby solving the problem in the prior art that the thermistor unit 30 is displaced from the heating position or the abnormal heating position and cannot correctly detect the temperature of the heating position or the abnormal heating position.

[0069] In some of the embodiments, an adhesive layer (not shown in the figure) is provided on both the side of the first membrane unit 10 close to the structure to be detected and the side away from the structure to be detected; wherein the adhesive layer provided on the side close to the structure to be detected is used to adhere the first membrane unit 10 to the structure to be detected, and the adhesive layer provided on the side away from the structure to be detected is adhesively connected to the thermal conductive unit 20.

[0070] Wherein, the adhesive layer may be a glue layer, and the adhesive layer is made of heat-resistant glue.

[0071] In some of the embodiments, the size of the heat conducting unit 20 is smaller than that of the first membrane unit 10 , and the adhesive layer disposed on the side away from the structure to be detected is adhesively connected to both the heat conducting unit 20 and the first membrane unit 10 .

[0072] In some embodiments, when the size of the heat-conducting unit 20 is larger than the size of the first film unit 10 , the heat-conducting unit 20 can be adhered to the structure to be detected through a plurality of first film units 10 arranged at intervals.

[0073] In some of the embodiments, Figures 3-4 As shown, the heat conduction unit 20 includes a placement portion 21 and a heat conduction portion 22. The placement portion 21 is arranged on a side of the first membrane unit 10 away from the structure to be detected, and is arranged corresponding to the heating position or the abnormal heating position; the heat conduction portion 22 is arranged on the outer periphery of the placement portion 21 along the circumference of the placement portion 21, so as to increase the heat conduction area of ​​the heat conduction unit 20.

[0074] The placement portion 21 is used to install and place the probe of the thermistor unit 30, and the placement portion 21 is a flat plate structure to avoid the probe of the thermistor unit 30 being unable to fully contact the placement portion 21 when the placement portion 21 is set to an arc shape.

[0075] The heat conducting portion 22 can be bent along the axial direction of the placement portion 21 so as to fit with the structure to be detected, thereby facilitating the heat conducting portion 22 to absorb the heat released from the heating position or the abnormal heating position.

[0076] For example, when the structure to be detected is a steering wheel heating layer, the placement portion 21 can be fixed on the steering wheel heating layer, and the heat conductive portion 22 can be bent into an arc shape to cooperate with the steering wheel heating layer, thereby fitting more closely with the steering wheel heating layer.

[0077] Furthermore, there are a plurality of heat-conducting parts 22 , which are arranged at intervals on the outer periphery of the placement part 21 , so as to be conveniently attached to the heat-generating position or the abnormally heat-generating position.

[0078] For example, there may be two heat-conducting parts 22 , which are respectively arranged in “(”, “)”-shaped structures. In this case, the heat-conducting parts 22 may be symmetrically arranged on both sides of the placement part 21 .

[0079] Furthermore, the heat conducting unit 20 may be configured to be in a petal shape having a plurality of heat conducting portions 22 .

[0080] By providing a plurality of heat conducting parts 22 at intervals, the influence of thermal stress on the heat conducting unit 20 can be reduced, thereby preventing the heat conducting unit 20 from being damaged or deformed due to the thermal stress.

[0081] In some embodiments, the temperature detection structure of the present invention further includes a second membrane unit 40, which covers the first membrane unit 10, the heat conducting unit 20 and the thermistor unit 30 to prevent the heat conducting unit 20 and the thermistor unit 30 from being exposed to the outside.

[0082] The second membrane unit 40 can be covered on the first membrane unit 10 , the heat conducting unit 20 and the thermosensitive unit 30 by pasting.

[0083] The side of the second membrane unit 40 facing away from the heat conducting unit 20 is set as a smooth insulating layer, and the side close to the heat conducting unit 20 is set as an adhesive layer, so that when the area of ​​the heat conducting unit 20 is smaller than that of the first membrane unit 10, the second membrane unit 40 is tightly adhered to the first membrane unit 10.

[0084] When the size of the heat-conducting unit 20 is larger than that of the first membrane unit 10 , the second membrane unit 40 is covered on the heat-conducting unit 20 and the thermosensitive unit 30 .

[0085] In some of the embodiments, the temperature detection structure also includes a reinforcing plate 50 (not shown in the figure), which is arranged on the first membrane unit 10 and connected to the wire of the thermistor unit 30 through a soldering pad, and the soldering pad is used to connect to an external connector to avoid damage to the solder joints of the soldering pad.

[0086] Furthermore, there are multiple reinforcing plates 50 , and they are disposed at the bottom of the placement portion 21 to form the placement portion 21 .

[0087] The reinforcing plate 50 is used to support the placement portion 21 and the pad, and the reinforcing plate 50 is made of a heat-conducting material.

[0088] The embodiment of the utility model includes a first film unit 10 with a double-sided adhesive layer, a heat-conducting unit 20 and a thermistor unit 30. The first film unit 10 serves to bond the heat-conducting unit 20 and isolate the heat-generating position from the heat-conducting unit 20. The heat-conducting unit 20 with good thermal conductivity evenly transfers the temperature of the heat-generating position or the abnormal heat-generating position, thereby achieving a uniform distribution of the temperature of the heat-generating position or the abnormal heat-generating position, which is convenient for the thermistor unit 30 to perform temperature detection. The second film unit 40 is used to isolate the peripheral material from the thermistor unit 30 to prevent the thermistor unit 30 from being exposed to the outside.

[0089] The utility model adopts a flat structure of the heat conduction unit 20 with a large contact area with the heating position or abnormal heating position, and can still maintain contact with the heating position or abnormal heating position when it is displaced under the influence of external force. For example, there is a first membrane unit 10 between the heating resistance wire of the heating layer and the heat conduction unit 20, and the thermistor is arranged on the heat conduction unit 20 and isolated from the peripheral material by the second membrane unit 40. The heat conduction unit 20 realizes uniform distribution of the steering wheel temperature, and then the flat structure of the thermistor unit 30 realizes real-time and accurate detection of temperature in different application scenarios.

[0090] The temperature detection structure of the embodiment of the utility model has the following advantages:

[0091] 1. Good uniformity: The steering wheel temperature can be collected uniformly without increasing the number of NTC components.

[0092] 2. High accuracy: Compared with the traditional NTC temperature detection solution, based on the uniformly collected heating layer temperature, the temperature value received by the control unit is more accurate and reasonable.

[0093] 3. High real-time performance: Through the real-time temperature of the heating layer detected by NTC, the control unit can accurately receive the temperature of the heating layer, and then give the corresponding control signal to achieve timely and accurate adjustment of the temperature of the heating layer.

[0094] Example 2

[0095] like Figures 5-6As shown, this embodiment provides a steering wheel, including a steering wheel frame and a heating layer 60 arranged on the steering wheel frame, and also includes a temperature detection structure as described in any one of Embodiment 1, the temperature detection structure is arranged on the heating layer 60, and the heat conductive unit 20 in the temperature detection structure is arranged corresponding to at least one heating wire 61 in the heating layer 60.

[0096] The heating layer 60 is arranged on the periphery of the steering wheel frame.

[0097] Furthermore, the length and width of the heat conducting unit 20 are both greater than the maximum interval between the heating wires 61 in the heating layer 60 .

[0098] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiment described later, since it corresponds to the method, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A temperature detection structure, characterized in that: include: A first membrane unit, wherein the first membrane unit is disposed at a heating position or an abnormal heating position of the structure to be detected, wherein the abnormal heating position is a position where the structure to be detected generates heat when it is abnormal; A heat conduction unit, the heat conduction unit is arranged on a side of the first film unit away from the structure to be detected, and the heat conduction unit is arranged corresponding to the heating position or the abnormal heating position, and the heat conduction unit is used to absorb the heat released from the heating position or the abnormal heating position, and make the heat evenly distributed on the heat conduction unit; The thermistor unit is arranged on a side of the heat conductive unit away from the first membrane unit, and a thermistor probe of the thermistor unit is in contact with the heat conductive unit, and is used to detect the surface temperature of the heat conductive unit through the probe of the thermistor unit.

2. The temperature detection structure according to claim 1, characterized in that: The first membrane unit is provided with an adhesive layer on a side close to the structure to be detected and a side away from the structure to be detected; The adhesive layer disposed on the side close to the structure to be detected is used to adhere the first membrane unit to the structure to be detected, and the adhesive layer disposed on the side away from the structure to be detected is adhesively connected to the heat conduction unit.

3. The temperature detection structure according to claim 2, characterized in that: The size of the heat-conducting unit is smaller than that of the first membrane unit, and the adhesive layer arranged on the side away from the structure to be detected is adhesively connected to the heat-conducting unit.

4. The temperature detection structure according to claim 1, characterized in that: The heat transfer unit comprises: a placement portion, the placement portion being arranged on a side of the first membrane unit away from the structure to be detected and being arranged corresponding to the heating position or the abnormal heating position; A heat conducting portion is disposed on the outer periphery of the placement portion along the circumferential direction of the placement portion, and is used to increase the heat conducting area of ​​the heat conducting unit.

5. The temperature detection structure according to claim 4, characterized in that: There are a plurality of heat-conducting parts, which are arranged at intervals on the outer periphery of the placement part so as to be attached to the heating position or the abnormal heating position.

6. The temperature detection structure according to claim 5, characterized in that: The heat conducting unit is in the shape of petals.

7. The temperature detection structure according to claim 1, characterized in that: Also includes: The second membrane unit is arranged to cover the first membrane unit, the heat conducting unit and the thermosensitive unit.

8. The temperature detection structure according to claim 1, characterized in that: Also includes: A reinforcing plate is disposed on the first membrane unit and connected to the wire of the thermosensitive unit through a soldering pad, wherein the soldering pad is used to connect to an external connector.

9. A steering wheel, comprising a steering wheel frame and a heating layer arranged on the steering wheel frame, characterized in that: Also includes: According to any one of claims 1 to 8, the temperature detection structure is arranged on the heating layer, and the heat conduction unit in the temperature detection structure is arranged corresponding to at least one heating wire in the heating layer.

10. The steering wheel according to claim 9, characterized in that The length and width of the heat conducting unit are both greater than the maximum interval between the heating wires in the heating layer.

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