Temperature sensing assembly of terminal and charging device

Abstract

The utility model relates to a terminal temperature sensing assembly and a charging device, the terminal temperature sensing assembly comprises a heat conduction frame body, a terminal, an elastic piece and a temperature sensor, the heat conduction frame body comprises a cavity and a middle partition plate dividing the cavity into a first cavity and a second cavity, the terminal is arranged in the first cavity in a penetrating mode, and the temperature sensor is arranged in the second cavity; the elastic piece is clamped and matched with the terminal to extrude the terminal and further apply acting force to the direction of the temperature sensor, and the temperature sensor and the terminal are tightly attached to the middle partition plate. According to the technical scheme, the terminal and the temperature sensor are arranged in the heat conduction frame body, and the terminal is extruded after the elastic piece is clamped and matched with the terminal, so that the terminal is attached to the middle partition plate more tightly, and the temperature sensor is attached to the middle partition plate tightly, so that the temperature value measured by the temperature sensor is more accurate; therefore, the problem of charging failure caused by overhigh temperature rise of a charging system due to the fact that a temperature measuring device in the prior art cannot accurately measure the temperature of the charging terminal is solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric energy transmission device manufacturing, and in particular to a temperature sensing component of a terminal and a charging device. Background Art

[0002] With the rapid development of new energy technologies, the number of new energy vehicles is increasing. At present, the charging gun heads and charging seats of new energy vehicles will have terminals with plug-in structures. When the car is charging, the current output from the charging terminal increases rapidly and the heat generation increases sharply. Therefore, for safety reasons, a temperature measuring device will be installed at the charging terminal. The current installation method of the temperature measuring device is to fit the charging terminal and the temperature measuring device together after the charging terminal is installed. However, since there is no pressure between the charging terminal and the temperature measuring device, there are actually many tiny gaps in the fitting area, resulting in the temperature measuring device being unable to accurately measure the temperature of the charging terminal, causing the temperature control system to be unable to adjust the temperature of the charging system in time, thereby causing the charging system to rise too high and causing charging failure. Utility Model Content

[0003] The embodiments of the present disclosure provide a temperature sensing component of a terminal and a charging device, so as to at least partially solve the problem that a temperature measuring device cannot accurately measure the temperature of a charging terminal, thereby causing excessive temperature rise in a charging system and resulting in charging failure.

[0004] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] The first aspect of the present disclosure proposes a temperature sensing component of a terminal, comprising a heat-conducting frame, a terminal, an elastic member and a temperature sensor, wherein the heat-conducting frame comprises an internal cavity and a middle partition arranged in the cavity, wherein the middle partition divides the cavity into a first cavity and a second cavity, wherein the terminal is inserted into the first cavity, and the temperature sensor is arranged in the second cavity, wherein the elastic member is engaged with the terminal to squeeze the terminal and then apply a force in the direction of the temperature sensor, and the temperature sensor and the terminal are both tightly attached to the middle partition.

[0006] Preferably, at least the middle partition is made of a ceramic-based thermally conductive insulating material, a high thermally conductive epoxy resin, a high thermally conductive silicone rubber or a high thermally conductive silicone grease.

[0007] Preferably, an additional cavity is provided on the outer surface of the side wall of the first cavity opposite to the middle partition, the first end of the additional cavity is closed, and the second end of the additional cavity opposite to the first end is open, one end of the elastic member extends from the second end into the additional cavity and is positioned in the additional cavity, and the other end is clamped with the terminal.

[0008] Preferably, the closed end surface of the first end is flush with the open end surfaces of one side of the first cavity and the second cavity.

[0009] Preferably, there is a horizontal distance between the open end surface of the second end and the open end surfaces on the other side of the first cavity and the second cavity.

[0010] Preferably, a first clamping hole is provided on the outer surface of the additional cavity, one end of the elastic member is a first positioning portion, the first positioning portion is provided with a clamping spring piece that is clamped into the first clamping hole, and the elastic member is positioned in the additional cavity through the cooperation between the clamping spring piece and the first clamping hole.

[0011] Preferably, the other end of the elastic member is a second positioning portion, the second positioning portion exposes the additional cavity, a bent snap-in section is connected between the second positioning portion and the first positioning portion, a second snap-in hole is provided on the side wall of the first cavity opposite to the middle partition, and the bent snap-in section passes through the second snap-in hole to snap-in with the terminal.

[0012] Preferably, a third clamping hole is provided on the terminal, and the bent clamping section is clamped and matched with the third clamping hole.

[0013] Preferably, the bending and clamping section includes an inclined bending section respectively connecting the first positioning part and the second positioning part, and a straight section connecting the two inclined bending sections, the straight section is located in the third clamping hole, and the two inclined bending sections are respectively abutted against the edges of the third clamping hole.

[0014] A second aspect of the present disclosure provides a charging device, comprising a temperature sensing component of a terminal as described in any of the above embodiments.

[0015] The beneficial effects of the present disclosure are as follows:

[0016] Since the current conducted in the terminal is relatively large, although the direct contact between the terminal and the temperature sensor can more accurately obtain the actual temperature of the terminal, the temperature sensor will also be easily damaged under the action of large current. Therefore, the temperature sensing component of the terminal of the present application is provided with an intermediate partition between the temperature sensor and the terminal, that is, the terminal and the temperature sensor are arranged in the heat-conducting frame body and are located on both sides of the intermediate partition, and an elastic member is arranged on the heat-conducting frame body, and the elastic member is engaged with the terminal to squeeze the terminal so that the terminal and the intermediate partition fit more closely, and at the same time, the temperature sensor and the intermediate partition are also in close contact, which ensures the stability of heat transfer and also ensures a longer service life of the temperature sensor. Thereby solving the problem of the service life of the temperature measuring device in the prior art and the problem that the temperature measuring device cannot accurately measure the temperature of the charging terminal, thereby causing the charging system to rise too high and cause charging failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the temperature sensing component of the terminal in the embodiment of the present disclosure;

[0019] Figure 2 It is a schematic diagram of the overall structure of the temperature sensing component of the terminal in another angle in the embodiment of the present disclosure;

[0020] Figure 3 is a schematic cross-sectional structure diagram of a temperature sensing component of a terminal in an embodiment of the present disclosure;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the middle heat conduction frame;

[0022] Figure 5 for Figure 2 Schematic diagram of the mechanism of the elastic member.

[0023] Reference numerals:

[0024] 1. Heat-conducting frame; 101. Middle partition; 102. First cavity; 103. Second cavity; 2. Terminal; 201. Third clamping hole; 3. Elastic member; 301. First positioning portion; 302. Second positioning portion; 303. Clamping spring; 304. Bending clamping section; 305. Inclined bending section; 306. Straight section; 4. Temperature sensor; 5. Additional cavity; 501. First end; 502. Second end; 503. First clamping hole; 6. Second clamping hole. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present disclosure are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure. In addition, the embodiments and features in the embodiments of the present disclosure may be combined with each other if no conflict occurs.

[0026] This embodiment provides a temperature sensing component of a terminal, such as Figures 1 to 5As shown, it includes a heat-conducting frame body 1, a terminal 2, an elastic member 3 and a temperature sensor 4. The heat-conducting frame body 1 includes an internal cavity and a middle partition 101 arranged in the cavity. The middle partition 101 divides the cavity into a first cavity 102 and a second cavity 103. The terminal 2 is inserted into the first cavity 102, and the temperature sensor 4 is arranged in the second cavity 103. After the elastic member 3 is engaged with the terminal 2, it squeezes the terminal 2 and then applies a force in the direction of the temperature sensor 4. The temperature sensor 4 and the terminal 2 are both close to the middle partition 101. It should be noted that the above-mentioned temperature sensing component is particularly suitable for row-type terminals, that is, the terminal 2 in this embodiment is arranged in a flat plate shape.

[0027] In this embodiment, the heat-conducting frame 1 is arranged in a rectangular structure, for example, it can be in the shape of a cuboid. A cavity is provided in the heat-conducting frame 1, and the middle partition 101 is plate-shaped and extends along the axial direction of the heat-conducting frame 1 and divides the cavity into a first cavity 102 and a second cavity 103, and the plane where the middle partition 101 is located is arranged parallel to the plane where the axial direction of the heat-conducting frame 1 is located. The terminal 2 is arranged in the first cavity 102 along the axial direction of the heat-conducting frame 1, and the temperature sensor 4 is installed in the second cavity 103 by injecting thermal conductive silicone. The elastic member 3 is arranged in a sheet shape on the heat-conducting frame 1, and the sheet-shaped elastic member 3 has a higher strength and occupies less space, which is conducive to the development of thinning of the electrical connector. The elastic member 3 is engaged with the terminal 2, and then the terminal 2 is squeezed under the elastic force of the elastic member 3 itself, so that the terminal 2 and the middle partition 101 are more closely fitted, avoiding the situation that the terminal 2 and the middle partition 101 cannot be continuously fitted, and the actual temperature of the terminal 2 can be more accurately measured.

[0028] It should be understood that the temperature sensor 4 is installed in the second cavity 103 by injecting thermally conductive silicone because the thermally conductive silicone has excellent thermal conductivity, which can assist the heat transfer of the thermally conductive frame 1 and increase the effective contact area; it has excellent electrical properties, such as being resistant to aging, moisture-proof and non-swelling, and having electrical insulation properties, as well as being shockproof, waterproof, vibration-absorbing and stable, thereby avoiding a reduction in the effective contact area due to vibration or a reduction in heat conduction efficiency due to the creation of an air gap; and it has excellent bonding strength, such as being particularly good at adhesion to plastics such as electronic components, while also having excellent sealing properties, thereby improving the overall reliability of the device and increasing the safety factor of the product during use.

[0029] During actual use, the terminal 2 is inserted into the first cavity 102, the temperature sensor 4 is installed in the second cavity 103, and the elastic member 3 is installed on the heat-conducting frame body 1 and clamped with the terminal 2. The terminal 2 is squeezed by its own elasticity so that the terminal 2 fits with the middle partition 101 to facilitate the transfer of the temperature of the terminal 2, thereby enabling the temperature sensor 4 to more accurately measure the actual temperature of the terminal 2.

[0030] Through the above technical solution, the terminal 2 and the temperature sensor 4 are arranged in the heat-conducting frame body 1 and located on both sides of the middle partition 101. By arranging the elastic member 3 on the heat-conducting frame body 1, the elastic member 3 is engaged with the terminal 2 and then squeezes the terminal 2 so that the terminal 2 and the middle partition 101 are more closely fitted, and the temperature sensor 4 and the middle partition 101 are closely attached to ensure that the temperature value measured by the temperature sensor 4 is more accurate. This solves the problem in the prior art that the temperature measuring device cannot accurately measure the temperature of the charging terminal 2, thereby causing the charging system to rise too high and cause charging failure.

[0031] In some embodiments, at least the material of the middle partition 101 is made of ceramic-based thermally conductive insulating material, high thermally conductive epoxy resin, high thermally conductive silicone rubber or high thermally conductive silicone grease. Ceramic-based thermally conductive insulating material, high thermally conductive epoxy resin, high thermally conductive silicone rubber or high thermally conductive silicone grease all have excellent thermal conductivity, high temperature resistance, can improve the temperature conduction rate, and accelerate the thermal reaction time. In this embodiment, the material of the middle partition 101 can be ceramic-based thermally conductive insulating material. Since the ceramic-based thermally conductive insulating material has high hardness and strong toughness, it is not easy to deform and break during use. Compared with the metal shell, the insulation withstand voltage level of the parts is improved, and the overall reliability of the device is improved. Moreover, by adopting the indirect contact temperature measurement method through the middle partition 101, the temperature of the terminal 2 is transferred to the thermally conductive silicone through the middle partition 101, and finally transferred to the temperature sensor 4, which not only monitors the temperature of the terminal 2, but also avoids the irreversible destructive effect of high-power current on the temperature sensor 4, improves the safety of the device, and reduces the maintenance cost, and improves the economic benefit.

[0032] In some embodiments, an additional cavity 5 is provided on the outer surface of the side wall of the first cavity 102 opposite to the middle partition 101, the first end 501 of the additional cavity 5 is closed, the second end 502 of the additional cavity 5 opposite to the first end 501 is open, one end of the elastic member 3 extends from the second end 502 to be positioned in the additional cavity 5, and the other end is engaged with the terminal 2. The elastic member 3 is inserted from the second end 502 of the additional cavity 5 along the extension direction of the additional cavity 5, so that the elastic member 3 can be fixed on the heat-conducting frame 1, and the elastic member 3 is prevented from falling off from the heat-conducting frame 1 during operation and separating from the terminal 2, so that the temperature sensor 4 cannot accurately measure the actual temperature of the terminal 2, thereby causing the charging system to rise too high and cause charging failure.

[0033] In some embodiments, the closed end surface of the first end 501 of the additional cavity 5 is flush with the open end surfaces of one side of the first cavity 102 and the second cavity 103. This arrangement enables the heat-conducting frame 1 to be better assembled during installation, saving installation space; at the same time, it has better mechanical protection performance and stronger anti-interference ability.

[0034] In some embodiments, there is a horizontal distance D between the open end surface of the second end 502 of the additional cavity 5 and the open end surfaces on the other side of the first cavity 102 and the second cavity 103. This arrangement leaves enough operating space for assembling or disassembling the elastic member 3 and can reduce costs; it can also ensure that the elastic member 3 is on the same supporting plane, ensuring greater stability during installation.

[0035] In some embodiments, the outer surface of the additional cavity 5 is provided with a first clamping hole 503, one end of the elastic member 3 is the first positioning portion 301, the first positioning portion 301 is provided with a clamping spring piece 303 clamped into the first clamping hole 503, and the elastic member 3 is positioned in the additional cavity 5 through the cooperation between the clamping spring piece 303 and the first clamping hole 503. In this embodiment, the first clamping hole 503 is arranged in communication with the additional cavity 5; the clamping spring piece 303 is arranged on the first positioning portion 301 in a sheet shape and has a certain elasticity. One end of the clamping spring piece 303 is fixed to the first positioning portion 301, and the other end is a free end, which is arranged away from the insertion direction of the first positioning portion 301. When the first positioning portion 301 is inserted into the additional cavity 5, the inner wall of the additional cavity 5 presses down the body of the snap-fit ​​spring 303; when the first positioning portion 301 is inserted into the position, the free end of the snap-fit ​​spring 303 pops up and snaps into the first snap hole 503, and the elastic member 3 is fixed on the heat-conducting frame body 1 to complete the assembly. When it is necessary to disassemble, it is only necessary to press down the free end of the snap-fit ​​spring 303 and make it disengage from the first snap hole 503, and then pull the first positioning portion 301 out of the additional cavity 5 along the axis direction of the additional cavity 5 to complete the disassembly of the elastic member 3. The snap-fit ​​connection method of the snap-fit ​​spring 303 and the first snap hole 503 is simple in structure, convenient in operation, and can improve work efficiency.

[0036] In some embodiments, the other end of the elastic member 3 is a second positioning portion 302, and the second positioning portion 302 exposes the additional cavity 5. A bent clamping section 304 is connected between the second positioning portion 302 and the first positioning portion 301. A second clamping hole 6 is provided on the side wall of the first cavity 102 opposite to the middle partition 101, and the bent clamping section 304 passes through the second clamping hole 6 and is clamped with the terminal 2. The bent clamping section 304 is clamped into the first cavity 102 through the second clamping hole 6 and is clamped with the terminal 2. The elastic member 3 squeezes the terminal 2 through the bent clamping section 304 under the action of its own elastic force, applies positive pressure to the terminal 2, eliminates the influence of the air gap on temperature conduction, makes the terminal 2 fit more closely with the middle partition 101, and further improves the accuracy of measuring the actual temperature of the terminal 2.

[0037] In some embodiments, a third clamping hole 201 is provided on the terminal 2, and the bent clamping section 304 is clamped and matched with the third clamping hole 201. The clamping section is clamped into the third clamping hole 201, and while squeezing the terminal 2 to make the terminal 2 and the middle partition 101 fit more closely, the terminal 2 can also be fixed in the first cavity 102, so as to avoid the terminal 2 sliding along the extension direction of the first cavity 102, and a gap is generated between the terminal 2 and the middle partition 101, which leads to inaccurate measurement by the temperature sensor 4. The stability of the device is further improved.

[0038] In some embodiments, the bent clamping section 304 includes an inclined bent section 305 respectively connecting the first positioning portion 301 and the second positioning portion 302, and a straight section 306 connecting the two inclined bent sections 305, the straight section 306 is located in the third clamping hole 201, and the two inclined bent sections 305 are respectively abutted against the edge of the third clamping hole 201. This arrangement significantly increases the clamping area of ​​the bent clamping section 304 in the third clamping hole 201, improves the stability of the bent clamping section 304 in the third clamping hole 201, and further reduces the possibility of the bent clamping section 304 detaching from the third clamping hole 201. At the same time, the abutment of the two inclined bent sections 305 enhances the force applied by the elastic member 3 to the terminal 2 toward the temperature sensor 4, so that the terminal 2 and the middle partition 101 are more closely attached, avoiding the situation that the terminal 2 and the middle partition 101 cannot be continuously attached, and further improving the accuracy of measuring the actual temperature of the terminal 2 and the reliability of the device.

[0039] The present disclosure also provides a charging device, including the temperature sensing component of the terminal as described above. For the sake of brevity, no further description is given.

[0040] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0041] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. A temperature sensing component of a terminal, characterized in that: The invention comprises a heat-conducting frame, a terminal, an elastic member and a temperature sensor. The heat-conducting frame comprises an internal cavity and a middle partition arranged in the cavity. The middle partition divides the cavity into a first cavity and a second cavity. The terminal is inserted into the first cavity, and the temperature sensor is arranged in the second cavity. After the elastic member is snap-fitted with the terminal, it squeezes the terminal and then applies a force in the direction of the temperature sensor. The temperature sensor and the terminal are both tightly attached to the middle partition.

2. The temperature sensing component of the terminal according to claim 1, characterized in that: At least the middle partition is made of a ceramic-based thermally conductive insulating material, a high thermally conductive epoxy resin, a high thermally conductive silicone rubber or a high thermally conductive silicone grease.

3. The temperature sensing component of the terminal according to claim 1, characterized in that: An additional cavity is provided on the outer surface of the side wall of the first cavity opposite to the middle partition, the first end of the additional cavity is closed, and the second end of the additional cavity opposite to the first end is open, one end of the elastic member extends from the second end into the additional cavity and is positioned, and the other end is clamped with the terminal.

4. The temperature sensing component of the terminal according to claim 3, characterized in that: The closed end surface of the first end is flush with the open end surfaces of one side of the first cavity and the second cavity.

5. The temperature sensing component of the terminal according to claim 3, characterized in that: There is a horizontal distance between the open end surface of the second end and the open end surfaces on the other side of the first cavity and the second cavity.

6. The temperature sensing component of the terminal according to claim 3, characterized in that: A first clamping hole is provided on the outer surface of the additional cavity, one end of the elastic member is a first positioning portion, and a clamping spring piece that is clamped into the first clamping hole is provided on the first positioning portion. The elastic member is positioned in the additional cavity through the cooperation between the clamping spring piece and the first clamping hole.

7. The temperature sensing component of the terminal according to claim 6, characterized in that: The other end of the elastic member is a second positioning portion, the second positioning portion exposes the additional cavity, a bent clamping section is connected between the second positioning portion and the first positioning portion, a second clamping hole is provided on the side wall of the first cavity opposite to the middle partition, and the bent clamping section passes through the second clamping hole and is clamped with the terminal.

8. The temperature sensing component of the terminal according to claim 7, characterized in that: The terminal is provided with a third clamping hole, and the bent clamping section is clamped and matched with the third clamping hole.

9. The temperature sensing component of the terminal according to claim 8, characterized in that: The bent clamping section includes an inclined bent section respectively connecting the first positioning portion and the second positioning portion, and a straight section connecting the two inclined bent sections, the straight section is located in the third clamping hole, and the two inclined bent sections are respectively abutted against the edges of the third clamping hole.

10. A charging device, characterized in that: A temperature sensing component comprising the terminal according to any one of claims 1 to 9.

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