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

Abstract

The invention discloses a temperature sensor for monitoring the water temperature of a water inlet pipe of a motor battery of an electric vehicle, and belongs to the technical field of temperature sensors of electric vehicles, the temperature sensor comprises a sensor probe, a wire harness box arranged at the top of the sensor probe, and a fixed disc arranged at the top of the wire harness box, the device has the advantages that by arranging the first spring, the connecting rod, the storage rod, the spherical connecting piece and the clamping part, flexible fixation of the wire harness is achieved, vibration in the vehicle running process is effectively buffered and absorbed, the wire harness is prevented from being broken due to fatigue, the connection reliability and the sensor signal stability are remarkably improved, and the reliability of the device is improved. Through the design of the modularized fixing assembly A and the fixing assembly B and the transmission mechanism of the first gear and the second gear, a plurality of clamping parts can be synchronously driven through single operation, and a single strand or multiple strands of wire harnesses can be flexibly matched and rapidly locked.

Description

Technical Field

[0001] This invention belongs to the field of electric vehicle temperature sensor technology, and in particular, a temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery. Background Technology

[0002] With the rapid development of electric vehicle technology, the performance and reliability of its core components—power batteries and drive motors—are becoming increasingly critical. To ensure that these high-power-density components operate within their optimal temperature range, electric vehicles generally employ sophisticated liquid-cooled thermal management systems. In this system, temperature sensors located within the coolant lines of the motor and battery act as "sensory nerves," and the coolant temperature data they collect is the core basis for the battery management system and motor controller to make thermal management decisions.

[0003] The accuracy and continuity of temperature sensor data are directly related to the safety, energy efficiency and lifespan of core components of the vehicle. Currently, the coolant temperature sensor used in electric vehicles is usually fixed in the cooling pipe by a metal or plastic mounting bracket, and its electrical connection relies on an external wiring harness to connect to the vehicle's control unit.

[0004] During vehicle operation, the vehicle body will shake, which will cause the water temperature sensor to shake. Prolonged vibration can cause the connection between the wiring harness and the water temperature sensor to loosen, which can easily lead to metal fatigue in the wiring harness. If the water temperature sensor signal is lost due to vibration or data drift when the battery or motor is overheated, the control system will not be able to take cooling measures in time, and the cooling system's response will also be delayed.

[0005] The purpose of this invention is to provide a temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery, in order to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery, comprising a sensor probe, a wiring harness box disposed on top of the sensor probe, a fixing plate disposed on top of the wiring harness box, the fixing plate and the wiring harness box being connected by mounting posts, a control component disposed on top of the fixing plate, the control component comprising a rotating rod capable of vertical displacement within the fixing plate, and a fixing component A disposed inside the fixing plate, the fixing component A comprising a mounting plate sleeved on the outside of the rotating rod, the rotating rod being slidably connected within the mounting plate, a plurality of sliding posts disposed on the outside of the mounting plate, each of the sliding posts being slidably connected to a limit block, the limit block having a connecting post at its top, the connecting post passing through a limit groove and being slidably connected within the limit groove, the connecting post having a clamping part at its top, the rotating rod having a second gear at its top, the second gear having a through limit groove at its top, the rotating rod rotating synchronously driving the second gear to rotate, the connecting post sliding within the limit groove, driving the limit block to slide outside the sliding post, completing the closing action of the clamping part.

[0008] Furthermore, the clamping part includes a storage column disposed on the top of the connecting column, a connecting rod connected by a ball connector is disposed inside the storage column, a plurality of first springs are disposed on the outside of the connecting rod, the first springs are connected inside the storage column, and a clamping block is disposed at the front end of the connecting rod.

[0009] Furthermore, the clamping block is arc-shaped and fits the outer surface of the wire harness, and a fixing plate is provided on one side of the sliding column, the fixing plate being disposed inside the mounting plate.

[0010] Furthermore, a positioning plate is provided at the bottom of the fixed plate, the positioning plate is located on the outside of the rotating rod, and a through mounting groove is provided in the positioning plate.

[0011] Furthermore, the mounting groove is provided with two sets of connecting discs. One of the connecting discs is fixedly installed at the opening of the mounting groove, and a sliding rod is slidably connected in the mounting groove. The other connecting disc is located on the outside of the sliding rod and can slide in the mounting groove. A second spring is sleeved on the outside of the sliding rod, and the two ends of the second spring are respectively connected to the two connecting discs.

[0012] Furthermore, a rotating groove is provided at the front end of the sliding rod, a rotating block is provided in the rotating groove, and a baffle is provided on the top of the rotating block, the baffle being located in the rotating groove.

[0013] Furthermore, the mounting plate is also provided with several fixing components B, and a first gear is provided at the center of the mounting plate. The rotating rod moves upward, driving the second gear to move upward, so that the second gear meshes with the first gear.

[0014] Furthermore, the top of the fixed plate has a through-hole for threading, the outer side of the rotating rod has a sliding groove, and the sliding groove has a number of slots that cooperate with the rotating block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention achieves flexible fixing of the wire harness by setting a first spring, a connecting rod, a storage rod, a spherical connector, and a clamping part, effectively buffering and absorbing vibrations during vehicle operation, preventing the wire harness from breaking due to fatigue, and significantly improving the reliability of the connection and the stability of the sensor signal. By setting up a modular fixing component A and a fixing component B, and through the transmission mechanism of the first gear and the second gear, multiple clamping parts can be driven synchronously by a single operation, which can flexibly adapt to and quickly lock single or multi-strand wire harnesses.

[0017] 2. By incorporating components such as a second spring, a rotating block, a sliding block, and a slot, this invention can automatically lock the rotating rod after clamping, effectively preventing loosening caused by vibration or gravity, ensuring a long-term stable clamping force, and guaranteeing the long-term effectiveness of the fixation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the fixed disk in this invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the fixed disk in this invention;

[0022] Figure 4 This is a schematic diagram of the structure of the fixing component A in this invention;

[0023] Figure 5 This is a schematic diagram of the limiting groove in the present invention;

[0024] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0025] Figure 7 This is a schematic diagram of the structure of the second gear in this invention;

[0026] Figure 8 This is a schematic diagram of the structure of the fixing component B in this invention;

[0027] Figure 9 This is a schematic diagram of the positioning disk in this invention;

[0028] Figure 10 This is a schematic diagram of the sliding rod in this invention;

[0029] Figure 11 for Figure 9 A magnified structural diagram at point B in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] In the picture:

[0032] 1. Sensor probe;

[0033] 2. Wiring harness box;

[0034] 3. Fixed plate;

[0035] 4. Install the column;

[0036] 5. Wire channel;

[0037] 6. Control components; 61. Rotating rod; 62. Sliding groove; 63. Slot;

[0038] 7. First gear;

[0039] 8. Fixing component A; 81. Second gear; 82. Sliding column; 83. Mounting plate; 84. Fixing plate; 85. Limiting block; 86. Connecting column; 87. Storage column; 88. Connecting rod; 89. Limiting groove; 810. Clamping block; 811. First spring; 812. Connecting piece;

[0040] 9. Fixed component B;

[0041] 10. Positioning plate; 101. Sliding rod; 102. Second spring; 103. Connecting plate; 104. Rotating groove; 105. Baffle; 106. Rotating block; 107. Mounting groove. Detailed Implementation

[0042] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0043] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this invention, and are explained here together.

[0044] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0045] Example 1

[0046] Please see Figures 1 to 6 As shown, when the wire harness of sensor probe 1 is a single strand, a temperature sensor for monitoring the water temperature of the inlet pipe of electric vehicle motor battery includes sensor probe 1. The main type of sensor probe 1 is a negative temperature coefficient thermistor, whose resistance value decreases as the temperature increases. The ECU can calculate the current coolant temperature by measuring its resistance value and referring to a pre-stored temperature-resistance comparison table. The sensor probe 1 also includes a wire harness box 2 set on top of sensor probe 1. The top of wire harness box 2 is also provided with a wire pass-through groove 5 for the wire harness to pass through. A fixing plate 3 is set on top of wire harness box 2. The fixing plate 3 is connected to wire harness box 2 through mounting post 4.

[0047] Control component 6, located on top of fixed plate 3, controls the clamping and loosening actions of fixed component A8. Control component 6 includes a rotating rod 61 that can move vertically within fixed plate 3. Fixed component A8 is located inside fixed plate 3 and includes a mounting plate 83 sleeved on the outside of rotating rod 61. Rotating rod 61 is slidably connected within mounting plate 83, allowing it to move vertically within the mounting plate 83. Several sliding posts 82 are provided on the outside of mounting plate 83, and each sliding post 82 is slidably connected to a limit block 85. A connecting post 86 is provided at the top, which passes through the limiting groove 89 and slides within the limiting groove 89. A second gear 81 is provided at the top of the rotating rod 61, and a through limiting groove 89 is provided at the top of the second gear 81. As shown in the attached figure, the limiting groove 89 is arc-shaped. Its function is that when the second gear 81 rotates, it drives the connecting post 86 of the limiting groove 89 to slide. The limiting block 85 connected to the bottom of the sliding post 86 slides outside the sliding post 82, thereby driving the connecting post 86 to perform linear displacement, and then driving the storage post 87 to move.

[0048] The top of the connecting post 86 is provided with a clamping part, which includes a storage post 87 located on the top of the connecting post 86. A connecting rod 88 connected by a ball connector 812 is provided inside the storage post 87. This allows the connecting rod 88 to rotate at all angles within the storage post 87. Several first springs 811 are provided on the outside of the connecting rod 88 and are connected inside the storage post 87. A clamping block 810 is provided at the front end of the connecting rod 88. The clamping block 810 is arc-shaped and fits the outer surface of the wire harness, resulting in a better fit. A fixing plate 84 is provided on one side of the sliding post 82. The fixing plate 84 is located inside the mounting plate 83. The fixing plate 84 supports the mounting plate 83 between the sliding posts 82 inside the mounting plate 83. This way, when the rotating rod 61 moves up and down, it will not affect the relationship between the mounting plate 83 and the sliding post 82.

[0049] Rotating the rotating rod 61 causes the fixing component A to move, thereby closing the clamp 810. After the wiring harness is fixed, the electric vehicle will shake during driving, causing the wiring harness of the sensor probe 1 to shake, which in turn causes the connecting rod 88 of the clamp 810 to shake. Since a first spring 811 is provided between the outer side of the connecting rod 88 and the storage column 87, the vibration generated when the connecting rod 88 shakes is reduced. The advantage of this is that the wiring harness is flexibly fixed. Rigid fixing cannot adapt to the vibration generated during the driving of the electric vehicle. Although the wiring harness is fixed, the impact of vibration cannot be reduced. Over time, the outer surface of the wiring harness will be damaged, which may seriously affect the detection effect of the wiring harness. Flexible fixing allows the connecting rod 88 to shake slightly within the storage column 87, while the first spring 811 reduces the impact of vibration. This can achieve the fixation of the wiring harness while reducing the impact of vibration during the driving of the electric vehicle.

[0050] Rotating the rotating rod 61 synchronously drives the second gear 81 at the top of the rotating rod 61 to rotate. When the second gear 81 rotates, the connecting column 86 slides in the limiting groove 89. At the same time, since the movement trajectory of the connecting column 86 is limited by the limiting block 85 connected to its bottom, the connecting column 86 completes the closing action, thereby driving the storage column 87 to close with the connecting rod 88. This can synchronously drive multiple arc-shaped clamps 810 to move, thereby fixing the wire harness of the sensor probe 1 passing through the wire groove 5. The advantage of this is that it can effectively fix the wire harness and reduce the impact of vibration generated by the electric vehicle driving on the wire harness.

[0051] Example 2

[0052] Please see Figures 7 to 11As shown, when the wiring harness of sensor probe 1 is multi-wire, a positioning plate 10 is provided at the bottom of the fixing plate 3. The positioning plate 10 is located outside the rotating rod 61. A through mounting groove 107 is opened in the positioning plate 10. Two sets of connecting plates 103 are provided in the mounting groove 107. One connecting plate 103 is fixedly installed at the opening of the mounting groove 107. A sliding rod 101 is slidably connected in the mounting groove 107. The other connecting plate 103 is located outside the sliding rod 101 and can slide in the mounting groove 107. A second spring 102 is sleeved on the outside of the sliding rod 101. The two ends of the second spring 102 are respectively connected to the two connecting plates 103. When the second spring 102 is in its natural state, the rotating block 106 is located in the sliding groove 62. Inside the slot 63, the vertical surface of the rotating block 106 is in contact with the slot 63, so that the rotating rod 61 will not fall off. The front end of the sliding rod 101 has a rotating groove 104, and the rotating block 106 is set inside the rotating groove 104. The top of the rotating block 106 is set with a baffle 105, which is located inside the rotating groove 104. The top of the fixed plate 3 has a through wire groove 5. The outside of the rotating rod 61 has a sliding groove 62. The function of the sliding groove 62 is that when the rotating rod 61 rotates, the rotating block 106 can slide along the outside of the sliding groove 62, and at this time the rotating block 106 will not contact the slot 63. Several slots 63 that cooperate with the rotating block 106 are set inside the sliding groove 62.

[0053] The mounting plate 83 is also provided with several fixing components B9. The fixing components B9 are composed of the same components as the fixing components A8, and their movement principle is the same as that of the fixing components A8. A first gear 7 is provided at the center of the mounting plate 83. The rotating rod 61 moves upward, driving the second gear 81 to move upward, so that the second gear 81 meshes with the first gear 7. At this time, rotating the rotating rod 61 can drive the second gear 81 to drive the first gear 7 that meshes with it to rotate, and simultaneously drive the multiple fixing components B9 to operate.

[0054] like Figure 8As shown, pulling the sliding rod 101 outward causes it to slide within the positioning plate 10. The sliding rod 101 drives one of the connecting plates 103 to move. Since the other connecting plate 103 is fixedly installed at the opening of the mounting groove 107, it compresses the second spring 102. This causes the rotating block 106 at the end of the sliding rod 101 to disengage from the slot 63, allowing the rotating rod 61 to be pushed upward. As the rotating rod 61 moves upward, the sliding groove 62 pushes the rotating block 106 upward until the lower outer sliding groove 62 of the rotating rod 61 contacts the rotating block 106. Due to the presence of the baffle 105, the rotating block 106 enters the sliding groove 62. Then, rotating the rotating rod 61 causes the rotating block 106 to slide within the sliding groove 62. The second gear 81 at the top of the rotating block 106 drives the first gear 7 to rotate, thereby causing the other fixing components B9 within the fixing disk 3 to operate, thus fixing multiple wire harnesses. Subsequently, the sliding rod 101 is released, and the second spring 102 returns to its original deformation, pushing the rotating block 106 into the slot 63. Because the weight of the rotating rod 61 presses down on the rotating block 106, and the other side of the rotating block 106 is limited by the baffle 105, the rotating block 106 is always kept in the slot 63, ensuring that the fixing effect of the fixing component B9 on the wire harness is not affected.

[0055] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery, comprising a sensor probe (1) and a wiring harness box (2) disposed on top of the sensor probe (1), characterized in that: A fixing plate (3) is set on the top of the wire harness box (2), and the fixing plate (3) is connected to the wire harness box (2) through a mounting post (4); A control component (6) is disposed on top of a fixed disk (3), the control component (6) including a rotating rod (61) that can move up and down within the fixed disk (3). A fixing component A (8) is disposed inside a fixing disk (3). The fixing component A (8) includes a mounting disk (83) sleeved on the outside of a rotating rod (61). The rotating rod (61) is slidably connected in the mounting disk (83). A plurality of sliding posts (82) are provided on the outside of the mounting disk (83). A limit block (85) is slidably connected on the outside of each sliding post (82). A connecting post (86) is provided on the top of the limit block (85). The connecting post (86) passes through a limit groove (89) and is slidably connected in the limit groove (89). A clamping part is provided on the top of the connecting post (86). A second gear (81) is provided on the top of the rotating rod (61). A through limit groove (89) is opened on the top of the second gear (81). The rotating rod (61) rotates synchronously, driving the second gear (81) to rotate. The connecting column (86) slides in the limiting groove (89), driving the limiting block (85) to slide outside the sliding column (82), thus completing the closing action of the clamping part.

2. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 1, characterized in that: The clamping part includes a storage column (87) disposed on the top of the connecting column (86). A connecting rod (88) connected by a ball connector (812) is disposed inside the storage column (87). A plurality of first springs (811) are disposed on the outside of the connecting rod (88). The first springs (811) are connected inside the storage column (87). A clamping block (810) is disposed at the front end of the connecting rod (88).

3. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 2, characterized in that: The clamping block (810) is an arc shape that fits the outer surface of the wire harness. A fixing plate (84) is provided on one side of the sliding column (82), and the fixing plate (84) is located inside the mounting plate (83).

4. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 1, characterized in that: The bottom of the fixed plate (3) is provided with a positioning plate (10), which is located on the outside of the rotating rod (61). A through mounting groove (107) is provided inside the positioning plate (10).

5. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 4, characterized in that: Two sets of connecting discs (103) are provided in the mounting groove (107). One of the connecting discs (103) is fixedly installed at the opening of the mounting groove (107). A sliding rod (101) is slidably connected in the mounting groove (107). The other connecting disc (103) is located outside the sliding rod (101) and can slide in the mounting groove (107). A second spring (102) is sleeved on the outside of the sliding rod (101). The two ends of the second spring (102) are respectively connected to the two connecting discs (103).

6. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 5, characterized in that: The sliding rod (101) has a rotating groove (104) at its front end. A rotating block (106) is provided in the rotating groove (104). A baffle (105) is provided on the top of the rotating block (106). The baffle (105) is located in the rotating groove (104).

7. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 1, characterized in that: The mounting plate (83) is also provided with several fixing components B (9). A first gear (7) is provided at the center of the mounting plate (83). The rotating rod (61) moves upward, driving the second gear (81) to move upward, so that the second gear (81) meshes with the first gear (7).

8. A temperature sensor for monitoring the water temperature in the inlet pipe of an electric vehicle motor battery according to claim 1, characterized in that: The top of the fixed plate (3) is provided with a through-hole groove (5), and the outside of the rotating rod (61) is provided with a sliding groove (62). The sliding groove (62) is provided with a number of slots (63) that cooperate with the rotating block (106).

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