Power battery temperature detection device and heat management unit

Abstract

The utility model discloses a power battery temperature detection device and a heat management unit, which comprise a power battery shell, a temperature controller and a plurality of temperature sensors, a heat conducting plate is arranged at the bottom of the inner wall of the power battery shell, and the plurality of temperature sensors are all arranged on the inner wall of the power battery shell through an installation mechanism. The temperature sensors are connected with the temperature controller through wires, the installation mechanism comprises a left fixing plate and a right fixing plate, the two fixing plates are fixedly connected with the inner wall of the power battery shell, and through grooves are formed in the two fixing plates. According to the power battery temperature detection device and the thermal management unit, the temperature sensor is installed in the power battery shell through the installation mechanism, the temperature sensor can be disassembled only by pressing down the two limiting plates at the same time, operation is convenient and rapid, and installation and disassembly can be conveniently completed in a narrow space by moving up and down.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a power battery temperature detection device and a thermal management unit. Background Art

[0002] Power batteries are the power source for tools, mostly referring to the batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation.

[0003] Chinese patent publication number "CN106972220A" discloses a power battery thermal management unit, including a heat exchanger core, one side of the heat exchanger core is connected to a coolant inlet pipe and a refrigerant inlet pipe, and the other side is connected to a coolant return pipe and a refrigerant return pipe.

[0004] The power battery needs to be temperature detected when in use, and the detection is performed by installing a temperature sensor inside the power battery. However, the temperature sensor in the existing detection device is installed on the power battery by bolts, but the remaining space inside the power battery is usually small. Therefore, it is inconvenient to remove the temperature sensor when it is damaged. In addition, the power battery of the vehicle is equipped with a thermal management unit for managing the temperature of the power battery, wherein the coolant inlet pipe and the refrigerant inlet pipe in the thermal management unit are connected to the heat conduction plate in the power battery. The two pipes are relatively long, and a support frame is set between the pipes to position the pipes. However, the size of the support frame is fixed, but it will vibrate when the car is driving. If the support is unstable, the two pipes will vibrate, and in severe cases, the connection between the pipe and the power battery will be broken. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a power battery temperature detection device and a thermal management unit, which solve the problems that the temperature sensor in the existing power battery temperature detection device is inconvenient to disassemble and the coolant inlet pipe and the refrigerant inlet pipe in the thermal management unit are not stable enough.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a power battery temperature detection device includes a power battery shell, a temperature controller and multiple temperature sensors, a heat conducting plate is installed at the bottom of the inner wall of the power battery shell, multiple temperature sensors are installed on the inner wall of the power battery shell through a mounting mechanism, multiple temperature sensors are connected to the temperature controller through wires, the mounting mechanism includes two left and right fixing plates, the two fixing plates are fixedly connected to the inner wall of the power battery shell, the two fixing plates are provided with through grooves inside, the front and back sides of the inner walls of the two through grooves are fixedly connected with fixing rods, the surface of the fixing rod is rotatably connected with two left and right connecting blocks, the other sides of the two connecting blocks are fixedly connected with limiting plates, and the left and right sides of the heat conducting plate are provided with positioning grooves that match the limiting plates.

[0007] Preferably, a torsion spring is sleeved on the surface of the fixing rod located between the two opposite sides of the connecting blocks, one end of the torsion spring is fixedly connected to the surface of the fixing rod, and the other side of the torsion spring is fixedly connected to the rear connecting block.

[0008] Preferably, a wire groove is provided inside the fixing plate on the right side, and the wire groove runs through the fixing plate from the top to the inside thereof, and the wire groove is used to limit the wire connected to the temperature sensor.

[0009] To achieve the above objectives, the utility model is also implemented through the following technical solutions: a thermal management unit of a power battery: including a heat exchanger, a heater and an electric water pump, the heat exchanger is connected with a coolant inlet pipe, a refrigerant inlet pipe and a corresponding return pipe located on the same side, the outlets of the coolant inlet pipe and the refrigerant inlet pipe are connected to the heat conduction plate in the above-mentioned power battery housing, a support assembly is arranged between the coolant inlet pipe and the refrigerant inlet pipe, the support assembly includes two upper and lower support blocks with arc grooves, the interior of the lower support block is provided with two front and rear slide grooves, the inner surfaces of the two slide grooves are slidably connected with T-shaped slide bars, the T-shaped slide bars penetrate the support block and extend to the top of the support block, and one end of the two T-shaped slide bars located on the lower support block is fixedly connected to the bottom of the upper support block.

[0010] Preferably, a limit spring is sleeved on the surface of the T-shaped slide bar located inside the slide groove, an arc-shaped groove is opened on the top of the support block below, an intermediate rod is rotatably connected between the left and right sides of the inner wall of the arc-shaped groove, and the intermediate rod passes through the outside of the support block.

[0011] Preferably, a disc is fixedly connected to the surface of the middle rod located inside the arc-shaped groove, and push rods are fixedly connected to the surface of the disc at equal distances, and the lengths of the plurality of push rods increase sequentially.

[0012] Beneficial Effects

[0013] The utility model provides a power battery temperature detection device and a thermal management unit. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The power battery temperature detection device and thermal management unit include two left and right fixing plates through the installation mechanism. The two fixing plates are fixedly connected to the inner wall of the power battery shell. Through grooves are provided inside the two fixing plates. The temperature sensor is installed inside the power battery shell through the installation mechanism. When removing the temperature sensor, it is only necessary to press the two limit plates at the same time. The operation is convenient and quick, and the installation and removal can be carried out by moving up and down, which can be easily completed in a small space.

[0015] 2. The power battery temperature detection device and thermal management unit include two upper and lower support blocks with arc grooves through a support assembly. The interior of the lower support block is provided with two front and rear slide grooves. The inner surfaces of the two slide grooves are slidably connected with T-shaped slide bars. The coolant inlet pipe and the refrigerant inlet pipe are supported by the support assembly. The supporting strength of the support assembly can be adjusted, which is beneficial to the stability of the two pipes and convenient for disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0017] Figure 2 This is a top view of the power battery housing of the utility model;

[0018] Figure 3 It is a cross-sectional view of the installation mechanism of the utility model;

[0019] Figure 4 It is a side view of the installation mechanism of the utility model;

[0020] Figure 5 It is a cross-sectional view of the support assembly of the utility model.

[0021] In the figure: 1. power battery housing; 2. temperature controller; 3. heat conduction plate; 4. temperature sensor; 5. mounting mechanism; 51. fixing plate; 52. through groove; 53. fixing rod; 54. connecting block; 55. limiting plate; 56. positioning groove; 57. torsion spring; 58. wire groove; 6. heat exchanger; 7. coolant inlet pipe; 8. refrigerant inlet pipe; 9. support assembly; 91. support block; 92. slide groove; 93. T-shaped slide rod; 94. limiting spring; 95. arc groove; 96. middle rod; 97. disc; 98. push rod; 10. heater; 11. electric water pump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-4 The figure shows an embodiment of the power battery temperature detection device: it includes a power battery housing 1, a temperature controller 2 and a plurality of temperature sensors 4, a heat conducting plate 3 is installed at the bottom of the inner wall of the power battery housing 1, and the plurality of temperature sensors 4 are installed on the inner wall of the power battery housing 1 through a mounting mechanism 5, and the plurality of temperature sensors 4 are connected to the temperature controller 2 through wires, and the mounting mechanism 5 includes two left and right fixing plates 51, the two fixing plates 51 are fixedly connected to the inner wall of the power battery housing 1, and the two fixing plates 51 are provided with through grooves 52 inside, and the front and back sides of the inner walls of the two through grooves 52 are fixedly connected with fixing rods 53, the surface of the fixing rod 53 is rotatably connected with two left and right connecting blocks 54, the other sides of the two connecting blocks 54 are fixedly connected with the limiting plates 55, and the left and right sides of the heat conducting plate 3 are provided with positioning grooves 56 that match the limiting plates 55. The surface of the fixing rod 53 located between the two connecting blocks 54 on opposite sides is sleeved with a torsion spring 57, one end of the torsion spring 57 is fixedly connected to the surface of the fixing rod 53, and the other side of the torsion spring 57 is fixedly connected to the rear connecting block 54. A wire groove 58 is opened inside the right fixing plate 51, and the wire groove 58 runs through the top of the fixing plate 51 to its inside, and the wire groove 58 is used to limit the wire connected to the temperature sensor 4.

[0024] The temperature sensor 4 is installed inside the power battery housing 1 through the installation mechanism 5. When removing the temperature sensor 4, it is only necessary to press the two limit plates 55 at the same time. The operation is convenient and quick, and the installation and removal can be carried out by moving up and down, which can be easily completed in a small space.

[0025] When installing the temperature sensor 4, place the temperature sensor 4 between the two fixing plates 51, and press down the temperature sensor 4 so that the temperature sensor 4 contacts the two limit plates 55, thereby pushing the two limit plates 55 to rotate to both sides respectively, so that the temperature sensor 4 can pass the position of the limit plates 55, and after the temperature sensor 4 moves to the position of the positioning groove 56 and aligns with the limit plates 55, the limit plates 55 are reset and enter the positioning groove 56 under the action of the torsion spring 57, thereby clamping and positioning the temperature sensor 4. At this time, the installation of the temperature sensor 4 is completed. When disassembling, press the two limit plates 55 at the same time so that the heads of the limit plates 55 come out of the positioning groove 56, and the temperature sensor 4 can be taken out from the top.

[0026] like Figure 1 and 5 The figure shows an implementation scheme provided by the thermal management unit of the power battery: it includes a heat exchanger 6, a heater 10 and an electric water pump 11, the heat exchanger 6 is connected with a coolant inlet pipe 7 and a refrigerant inlet pipe 8 and a corresponding return pipe located on the same side, and a solenoid valve is arranged on the corresponding pipeline, so as to complete the cooling or heating of the power battery at different temperatures, the outlets of the coolant inlet pipe 7 and the refrigerant inlet pipe 8 are connected to the heat conducting plate 3 in the power battery housing 1, a support assembly 9 is arranged between the coolant inlet pipe 7 and the refrigerant inlet pipe 8, and the support assembly 9 includes two upper and lower support blocks 91 with arc grooves, and the interior of the lower support block 91 is provided with two front and rear slide grooves 92, and the two slide grooves 92 are provided with arc grooves. The inner surface is slidably connected with a T-shaped slide bar 93, which passes through the support block 91 and extends to the top of the support block 91. One end of the two T-shaped slide bars 93 located on the lower support block 91 is fixedly connected to the bottom of the upper support block 91. The surface of the T-shaped slide bar 93 located inside the slide groove 92 is sleeved with a limit spring 94. An arc-shaped groove 95 is opened on the top of the lower support block 91. An intermediate rod 96 is rotatably connected between the left and right sides of the inner wall of the arc-shaped groove 95, and the intermediate rod 96 passes through the outside of the support block 91. The surface of the intermediate rod 96 located inside the arc-shaped groove 95 is fixedly connected with a disk 97, and the surface of the disk 97 is fixedly connected with push rods 98 at equal distances, and the lengths of multiple push rods 98 increase sequentially.

[0027] The coolant inlet pipe 7 and the refrigerant inlet pipe 8 are supported by a support assembly 9, and the support strength of the support assembly 9 can be adjusted, which is beneficial to the stability of the two pipes and convenient for disassembly and installation.

[0028] When installing the support assembly 9 between the coolant inlet pipe 7 and the refrigerant inlet pipe 8, insert the support assembly 9 between the coolant inlet pipe 7 and the refrigerant inlet pipe 8, then rotate the disk 97 through the intermediate rod 96 so that the top rod 98 contacts the bottom of the upper support block 91, thereby lifting the support block 91 upward and making the two support blocks 91 contact the coolant inlet pipe 7 and the refrigerant inlet pipe 8 respectively, and then adjust the rotating disk 97 according to the actual situation to adjust the support strength of the support assembly 9 on the coolant inlet pipe 7 and the refrigerant inlet pipe 8.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power battery temperature detection device, comprising a power battery housing (1), a temperature controller (2) and a plurality of temperature sensors (4), characterized in that: A heat conducting plate (3) is installed at the bottom of the inner wall of the power battery housing (1), and a plurality of temperature sensors (4) are installed on the inner wall of the power battery housing (1) through a mounting mechanism (5). The plurality of temperature sensors (4) are connected to the temperature controller (2) through wires. The mounting mechanism (5) comprises two left and right fixing plates (51), and the two fixing plates (51) are fixedly connected to the inner wall of the power battery housing (1). Through grooves (52) are provided inside the two fixing plates (51). The front and back sides of the inner walls of the two through grooves (52) are fixedly connected with fixing rods (53). The surfaces of the fixing rods (53) are rotatably connected with two left and right connecting blocks (54), and the other sides of the two connecting blocks (54) are fixedly connected with limiting plates (55). Positioning grooves (56) matching with the limiting plates (55) are provided on the left and right sides of the heat conducting plate (3).

2. A power battery temperature detection device according to claim 1, characterized in that: A torsion spring (57) is sleeved on the surface of the fixing rod (53) located between the two connecting blocks (54) on opposite sides, one end of the torsion spring (57) is fixedly connected to the surface of the fixing rod (53), and the other side of the torsion spring (57) is fixedly connected to the rear connecting block (54).

3. A power battery temperature detection device according to claim 1, characterized in that: A wire groove (58) is provided inside the fixing plate (51) on the right side, and the wire groove (58) penetrates from the top of the fixing plate (51) to the inside thereof, and the wire groove (58) is used to limit the wire connected to the temperature sensor (4).

4. A thermal management unit for a power battery, comprising the power battery temperature detection device according to any one of claims 1 to 3, and further comprising a heat exchanger (6), a heater (10) and an electric water pump (11), characterized in that: The heat exchanger (6) is connected to a coolant inlet pipe (7) and a refrigerant inlet pipe (8) located on the same side and a corresponding return pipe. The outlets of the coolant inlet pipe (7) and the refrigerant inlet pipe (8) are connected to the heat conducting plate (3) in the power battery housing (1). A support assembly (9) is arranged between the coolant inlet pipe (7) and the refrigerant inlet pipe (8). The support assembly (9) includes two upper and lower support blocks (91) with arc grooves. The interior of the lower support block (91) is provided with two front and rear slide grooves (92). The inner surfaces of the two slide grooves (92) are slidably connected with T-shaped slide bars (93). The T-shaped slide bars (93) penetrate the support block (91) and extend to the top of the support block (91). One end of the two T-shaped slide bars (93) located on the lower support block (91) is fixedly connected to the bottom of the upper support block (91).

5. The thermal management unit of a power battery according to claim 4, characterized in that: A limit spring (94) is sleeved on the surface of the T-shaped slide bar (93) located inside the slide groove (92), and an arc-shaped groove (95) is opened on the top of the support block (91) below. An intermediate rod (96) is rotatably connected between the left and right sides of the inner wall of the arc-shaped groove (95), and the intermediate rod (96) passes through the outside of the support block (91).

6. A thermal management unit for a power battery according to claim 5, characterized in that: The surface of the intermediate rod (96) located inside the arc-shaped groove (95) is fixedly connected to a disk (97), and the surface of the disk (97) is fixedly connected to push rods (98) at equal distances, and the lengths of the plurality of push rods (98) increase sequentially.

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