Temperature sensor for monitoring water temperature of water inlet pipe of motor battery of electric vehicle

Abstract

The utility model discloses a temperature sensor for monitoring water temperature of a water inlet pipe of a motor battery of an electric automobile, and belongs to the field of temperature sensors. In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of the electric automobile comprises a plastic part and a metal shell, and the metal shell is wrapped on the outer wall of the plastic part; the PIN needle is arranged in the plastic part, and the bottom of the PIN needle extends out of the plastic part and extends outwards; the NTC sensor is arranged at the bottom end of the metal shell, and the NTC sensor is connected with the bottom of the PIN through a connecting piece; a stop groove used for limiting rotation of the plastic part is formed in the plastic part, and a filling part is arranged between the bottom of the plastic part and the metal shell; according to the utility model, through the arrangement of the stop groove, the problem that the plastic part of the water temperature sensor rotates after being riveted with the metal shell is solved, and the sealing ring is prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, in particular to a temperature sensor used for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle. Background Art

[0002] An important component of new energy electric vehicles is the electric motor and battery. Overheating of the motor will accelerate the aging of motor components, thereby shortening the life of the motor. This is because high temperature environment will cause the performance of materials inside the motor to deteriorate. For example, the insulation material of the coil may age faster due to high temperature, which in turn causes motor failure. Overheating of electric vehicle batteries will cause many hazards, which not only affect the performance and life of the battery itself, but may also have a serious impact on the safety and reliability of the vehicle. In order to ensure the long life of the motor and battery and to achieve its best performance, the temperature of the motor and battery also needs to be continuously monitored. Therefore, it is crucial to monitor the temperature of the stator winding and battery, which is an important means for the motor and battery to fully utilize all the advantages and avoid the risk of overheating.

[0003] At present, the plastic part of the water temperature sensor and the metal shell are connected together by riveting, and a sealing ring is sealed between the plastic part and the metal shell; after riveting, the plastic part and the metal shell will rotate, and there is a risk of damage and failure of the sealing ring after long-term use. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle, comprising:

[0007] A plastic part and a metal shell, wherein the metal shell is wrapped around the outer wall of the plastic part;

[0008] A PIN pin is disposed in the plastic part, and the bottom of the PIN pin protrudes from the plastic part and extends outward;

[0009] The NTC sensor is arranged at the bottom end of the metal housing, and the NTC sensor is connected to the bottom of the PIN needle through a connector;

[0010] A stop groove for limiting the rotation of the plastic part is arranged on the plastic part, and a filling part is arranged between the bottom of the plastic part and the metal shell.

[0011] Preferably, a riveting block is provided on the top of the metal shell, and the riveting block is embedded in the plastic part.

[0012] Furthermore, an annular sealing ring is provided between the plastic part and the inner wall of the metal shell.

[0013] Preferably, a plug-in block is provided on the top of the plastic part, a plug-in slot is provided in the plug-in block, and the top of the PIN pin is placed in the plug-in slot.

[0014] Preferably, a sleeve is sleeved on the outer wall of the metal shell, a connecting pipe is integrally formed at the bottom of the sleeve, a groove corresponding to the retaining groove is provided on the sleeve, and a limiting rod is connected to the groove and the retaining groove.

[0015] Furthermore, an angular sealing ring is sleeved on the outer wall of the metal shell, and the angular sealing ring is arranged between the metal shell and the inner wall of the sleeve.

[0016] Preferably, the filling piece is thermally conductive silicone grease.

[0017] Compared with the prior art, the utility model provides a temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle, which has the following beneficial effects:

[0018] 1. The temperature sensor used to monitor the water temperature of the water inlet pipe of the electric vehicle motor battery is designed with a stop groove at the joint position of the plastic part and the metal shell to solve the problem of the water temperature sensor plastic part and the metal shell rotating after riveting, so that the water temperature sensor will no longer rotate after riveting, thereby improving the use effect, avoiding wear of the sealing ring, and increasing the service life of the sensor.

[0019] 2. The temperature sensor used to monitor the water temperature of the water inlet pipe of the electric vehicle motor battery is provided with a plug-in block and a plug-in slot at the interface of the plastic part, which can facilitate the connection of the male end of the plug-in, and does not require additional terminal connectors. It can be directly connected to the terminal, etc. The PIN needle of the terminal connector is plastic-coated in the plastic part, one end is connected to the NTC sensor, and the other end is connected to the counterpart on the terminal connector, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle proposed in the utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle proposed in the utility model. Figure 2 ;

[0022] Figure 3 A cross-sectional view of a temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle proposed by the utility model;

[0023] Figure 4 A top view of a temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle proposed by the utility model;

[0024] Figure 5 This is a schematic diagram of a temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle proposed by the utility model, which does not include a sleeve and a connecting pipe. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of a temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle proposed by the utility model, which does not include a sleeve and a connecting pipe. Figure 2 .

[0026] In the figure: 1. Plastic part; 101. Plug-in block; 102. Plug-in slot; 103. Stop slot; 2. PIN needle; 201. Connector; 3. Metal shell; 301. Riveting block; 4. Annular sealing ring; 5. Angular sealing ring; 6. Filling piece; 7. NTC sensor; 8. Connecting pipe; 801. Sleeve; 802. Groove; 803. Limit rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] Example:

[0030] Reference Figure 1-Figure 6 A temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle comprises a plastic part 1 and a metal shell 3, wherein the metal shell 3 is wrapped around the outer wall of the plastic part 1, a PIN needle 2 is arranged inside the plastic part 1, and the bottom of the PIN needle 2 extends out of the plastic part 1 and extends outward; an NTC sensor 7 is arranged inside the bottom end of the metal shell 3, and the NTC sensor 7 is connected to the bottom of the PIN needle 2 through a connecting piece 201; a retaining groove 103 for limiting the rotation of the plastic part 1 is arranged on the plastic part 1, and a filling piece 6 is arranged between the bottom of the plastic part 1 and the metal shell 3.

[0031] In the utility model, the metal shell 3 provided can provide stronger physical protection, which can effectively prevent the external water, oil, dust, debris, etc. from affecting the performance and service life of the sensor, and the metal material is more impact-resistant and can improve the anti-interference ability. Through the PIN needle 2, the working condition of the sensor can be detected in a non-contact manner, without the need for destructive testing, and the detection speed is fast. The bottom of the PIN needle 2 extends out of the plastic part 1 and extends outward, which can be convenient for connecting external devices. Secondly, in order to solve the problem that the plastic part 1 of the water temperature sensor rotates after riveting the metal shell 3, a stop groove 103 is designed at the matching connection position of the plastic part 1 and the metal shell 3, so that the water temperature sensor no longer rotates after riveting, thereby improving the use effect, avoiding wear of the sealing ring, and improving the service life of the sensor; by providing the filling piece 6, the contact area between the plastic part 1 and the metal shell 3 can be increased, thereby improving the connection stability between them and reducing the risk of loosening or damage caused by vibration or impact; and the sealing between the plastic part 1 and the metal shell 3 can be enhanced to prevent external moisture, dust or other pollutants from entering the sensor, thereby protecting its internal structure and circuit from damage.

[0032] Specifically, the filling member 6 is made of thermally conductive silicone grease, which has excellent thermal conductivity and can effectively transfer heat from the plastic part 1 or the metal shell 3 to other parts, thereby improving the heat dissipation efficiency of the sensor and ensuring that it can still work normally in a high temperature environment; the thermally conductive silicone grease not only has good thermal conductivity, but also has good electrical insulation performance, which ensures that it will not have a negative impact on the electrical performance of the sensor while improving the thermal conductivity of the sensor; secondly, the thermally conductive silicone grease also has excellent weather resistance and stability, and can work stably for a long time under various environmental conditions, thereby extending the service life of the sensor.

[0033] A rivet block 301 is provided on the top of the metal shell 3, and the rivet block 301 is embedded in the plastic part 1; by embedding the rivet block 301 in the plastic part 1, the stability can be further improved, and rotation between the plastic part 1 and the metal shell 3 can be avoided, and no wear on the sealing ring will be caused.

[0034] An annular sealing ring 4 is arranged between the plastic part 1 and the inner wall of the metal shell 3. The annular sealing ring 4 can prevent moisture and dust from entering, thereby improving the service life. The retaining groove 103 can prevent the plastic part 1 and the metal shell 3 from rotating relative to each other, thereby preventing the annular sealing ring 4 from being worn.

[0035] A plug-in block 101 is provided on the top of the plastic part 1, a plug-in slot 102 is provided in the plug-in block 101, and the top of the PIN pin 2 is placed in the plug-in slot 102; the plug-in block 101 and the plug-in slot 102 are provided at the interface of the plastic part 1, which can facilitate the connection of the male end of the plug-in, and no additional terminal connector is required, and it can be directly connected to the terminal, etc. The PIN pin 2 of the terminal connector is plastic-coated in the plastic part 1, one end of which is connected to the NTC sensor 7, and the other end is connected to the counterpart on the terminal connector, which is convenient to use.

[0036] A sleeve 801 is sleeved on the outer wall of the metal shell 3, and a connecting pipe 8 is integrally formed at the bottom of the sleeve 801. A groove 802 corresponding to the stop groove 103 is provided on the sleeve 801, and a limiting rod 803 is connected in the groove 802 and the stop groove 103; an angular sealing ring 5 is sleeved on the outer wall of the metal shell 3, and the angular sealing ring 5 is arranged between the metal shell 3 and the inner wall of the sleeve 801.

[0037] In the utility model, the water temperature sensor and the pipe diameter in the pipeline are sealed by an anisotropic sealing ring, that is, the metal shell 3 and the sleeve 801 are sealed by an angular sealing ring 5, which can improve the use effect. The bottom of the metal shell 3 is inserted into the connecting pipe 8 for easy use. The inner diameter of the pipeline of the connecting pipe 8 is provided with an inclined taper, which can increase the sealing performance of the water temperature sensor and the pipeline. The limit rod 803 is inserted into the groove 802 and the stop groove 103, which can limit the rotation of the plastic part 1 to avoid its wear on the annular sealing ring 4, and it can be easily taken through the limit rod 803.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle, It is characterized in that include: A plastic part (1) and a metal shell (3), wherein the metal shell (3) is wrapped around the outer wall of the plastic part (1); A PIN needle (2) is arranged in the plastic part (1), and the bottom of the PIN needle (2) protrudes from the plastic part (1) and extends outward; An NTC sensor (7) is arranged at the bottom end of the metal housing (3), and the NTC sensor (7) is connected to the bottom of the PIN needle (2) via a connecting piece (201); A stop groove (103) for limiting the rotation of the plastic part (1) is provided on the plastic part (1), and a filling part (6) is provided between the bottom of the plastic part (1) and the metal shell (3).

2. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 1, It is characterized in that A riveting block (301) is provided on the top of the metal shell (3), and the riveting block (301) is embedded in the plastic part (1).

3. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 2, It is characterized in that An annular sealing ring (4) is provided between the plastic part (1) and the inner wall of the metal shell (3).

4. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 1 or 3, It is characterized in that A plug-in block (101) is provided on the top of the plastic part (1), a plug-in slot (102) is provided in the plug-in block (101), and the top of the PIN pin (2) is placed in the plug-in slot (102).

5. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 1, It is characterized in that A sleeve (801) is sleeved on the outer wall of the metal shell (3); a connecting pipe (8) is integrally formed at the bottom of the sleeve (801); a groove (802) corresponding to the retaining groove (103) is provided on the sleeve (801); a limiting rod (803) is connected inside the groove (802) and the retaining groove (103).

6. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 5, It is characterized in that An angular sealing ring (5) is sleeved on the outer wall of the metal shell (3), and the angular sealing ring (5) is arranged between the metal shell (3) and the inner wall of the sleeve (801).

7. A temperature sensor for monitoring the water temperature of the water inlet pipe of the motor battery of an electric vehicle according to claim 1, It is characterized in that The filling piece (6) is thermally conductive silicone grease.

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