Power battery temperature monitoring device and use method thereof

Abstract

The invention belongs to the technical field of battery temperature monitoring devices, and particularly relates to a power battery temperature monitoring device which comprises a battery bin, a plurality of sets of power batteries are arranged in the battery bin, and a sealing cover is arranged at the top of the battery bin. And the sealing cover and the battery compartment are detachably connected together through screws. In the using process, the temperature of the power battery is transmitted to the temperature sensor through the heat conduction rod, the heat conduction strip and the heat conduction plate in sequence, then the data collector can collect temperature data sensed by the temperature sensor and finally send the temperature data to the monitoring terminal and the controller through the communication device, and therefore the real-time monitoring effect is achieved; and the controller can also control the cooling plate to be attached to or separated from the power battery according to the temperature information collected by the data collector, so that the temperature of the power battery is adjusted, and the working performance of the power battery is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of battery temperature monitoring devices, and particularly relates to a power battery temperature monitoring device and its usage method. Background Technology

[0002] A power battery is a power source that provides power to tools, often referring to the batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. The specific type varies slightly depending on the type of electric vehicle. In pure electric vehicles equipped only with a battery, the battery is the sole power source for the vehicle's drive system. In hybrid electric vehicles equipped with both a traditional engine (or fuel cell) and a battery, the battery can act as either the primary or auxiliary power source for the drive system. Since the main driving energy of electric vehicles comes from the battery, monitoring the power battery is particularly important. Power battery monitoring mainly includes charge monitoring, voltage monitoring, and temperature monitoring.

[0003] To monitor battery temperature, a Chinese patent (CN216648416U) discloses a real-time battery temperature monitoring device for automobiles. This device includes a "battery box containing a battery pack, a data acquisition chamber at the top of the battery box, and a temperature monitoring mechanism inside the acquisition chamber, comprising a heat-conducting tape, a heat-absorbing plate, and a temperature sensor." This invention primarily uses the heat-conducting tape and heat-absorbing plate to transfer the battery temperature to the temperature sensor, which is then collected by a data acquisition device and finally transmitted to a monitoring terminal via a communication device, thus achieving real-time monitoring. While this invention achieves a certain degree of battery temperature detection, it still has the following shortcomings in practical use:

[0004] Since batteries are affected by ambient temperature during use, their performance changes. Because the above invention lacks a suitable temperature control device, it can only perform simple monitoring and cannot change the battery's operating temperature according to changes in battery temperature, thus failing to maintain high battery performance.

[0005] Therefore, it is necessary to invent a power battery temperature monitoring device and its usage method to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a power battery temperature monitoring device and its usage method, thereby resolving the issues raised in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a power battery temperature monitoring device, comprising a battery compartment, wherein multiple power batteries are disposed within the battery compartment, a sealing cover is provided on the top of the battery compartment, the sealing cover is detachably connected to the battery compartment by screws, and a sealing cavity is provided at the bottom of the sealing cover, a partition is provided at the bottom of the sealing cover, a storage groove is provided at the bottom of the partition, a temperature regulating device is provided in the storage groove, and a temperature monitoring device is provided on the top of the partition.

[0008] Furthermore, the temperature regulating device includes a cooling plate, which is hollow and filled with coolant. The top of the cooling plate has through-holes the same number as the number of power batteries. A sealing tube matching the diameter of the through-hole is fixedly inserted into each hole. The bottom of the sealing tube is flush with the bottom of the cooling plate, and the top of the sealing tube is vertically slidably inserted into a partition. Four first limiting rods are vertically fixedly connected to the top of the cooling plate, symmetrically distributed near both sides of the top of the cooling plate. The tops of the first limiting rods are vertically slidably inserted into the partition. A roller is rotatably connected between the tops of two first limiting rods on each side. Two electrically operated telescopic blocks are provided on the opposite side of the two rollers. The electric telescopic blocks are installed on the top of the partition, with their extended ends facing the corresponding rollers. The thickness of the extended ends of the electric telescopic blocks gradually decreases towards the rollers, and the extended ends of the electric telescopic blocks are always located at the bottom of the rollers.

[0009] Furthermore, the temperature monitoring device includes multiple retractable heat-conducting rods, each fitted with a first spring. The multiple heat-conducting rods are inserted one-to-one into multiple sealed tubes. Heat-conducting strips are fixedly connected between the tops of the front heat-conducting rods and between the tops of the rear heat-conducting rods. A heat-conducting plate is horizontally fixedly connected between two heat-conducting strips. Multiple second limiting rods are vertically slidably inserted through the top of the heat-conducting plate. The bottom ends of the second limiting rods are vertically fixedly connected to the top of the partition plate, and second springs are fitted onto the bottom portions of the second limiting rods of the heat-conducting plate. A temperature sensor is located at the top center of the sealing cover. The temperature sensor is inserted through the middle of the top of the sealing cover. A data acquisition unit and a controller are located on one side of the temperature sensor. The data acquisition unit and the controller are both installed on the top of the sealing cover. The data acquisition unit is electrically connected to the temperature sensor and is connected to the monitoring terminal via a communication device. The controller is electrically connected to multiple electric telescopic blocks and the data acquisition unit. The top of the controller, the data acquisition unit, and the temperature sensor is covered by the same protective shell, which is installed on the top of the sealing cover.

[0010] Furthermore, horizontal strip-shaped air inlets are provided through both sides of the storage slot, and the strip-shaped air inlets are close to the top wall of the storage slot, and a filter screen is installed inside the strip-shaped air inlets.

[0011] Furthermore, notches are provided on both sides of the top of the battery compartment, and a strip-shaped sealing groove is provided on the bottom inner wall of the notch. A sealing strip is slidably inserted into the sealing groove, and the sealing strip is vertically fixedly connected to the bottom of the partition.

[0012] Furthermore, a rectangular sealing protrusion is fixedly connected to the top of the partition, and multiple insertion holes are located inside the sealing protrusion. The outer periphery of the sealing protrusion fits against the inner wall of the sealing cavity at the bottom of the sealing cover, and the height of the sealing protrusion matches the depth of the sealing cavity.

[0013] Furthermore, guide strips are fixedly connected to both sides of the sealing cover near the bottom. The bottom surface of the guide strips gradually slopes towards the sealing cover, and the guide strips are close to the top of the strip-shaped air inlet.

[0014] Furthermore, a U-shaped locking block is fixedly connected to the extended end of the electric telescopic block. The opening of the U-shaped locking block faces the non-extendable end of the electric telescopic block, and the roller is located inside the U-shaped locking block. The vertical height of the inclined surface of the extended end of the electric telescopic block is equal to the maximum vertical movement distance of the cooling plate.

[0015] Furthermore, thermally conductive patches are connected to the bottom of both the heat-conducting rod and the temperature sensor. The thermally conductive patches at the bottom of the heat-conducting rod and the temperature sensor are respectively attached to the top of the power battery and the heat-conducting plate.

[0016] The present invention also provides a method of using any one of the above-mentioned methods in a power battery temperature monitoring device, the method comprising the following steps:

[0017] Step 1: Install the separator onto the top of the battery compartment, and ensure that the cooling plate at the bottom of the separator is flush with the top of the power battery.

[0018] Step 2: Install the sealing cap onto the top of the partition and use screws to connect the sealing cap to the battery compartment;

[0019] Step 3: Install the temperature sensor onto the top of the sealing cover, ensuring its bottom is firmly attached to the heat-conducting plate;

[0020] Step 4: The temperature sensor can work with the data acquisition unit to monitor the temperature of the power battery and adjust the cooling plate through the controller, thereby achieving both temperature monitoring and regulation of the power battery.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. During use, the temperature of the power battery is transferred to the temperature sensor through the heat-conducting rod, heat-conducting strip, and heat-conducting plate. The data acquisition unit then collects the temperature data sensed by the temperature sensor and sends it to the monitoring terminal and controller through the communication device, thus playing a real-time monitoring role. In addition, the controller can also control the extension or shortening of the electric telescopic block according to the temperature information collected by the data acquisition unit, thereby realizing the contact and separation of the cooling plate and the power battery, thereby regulating the temperature of the power battery and improving the working performance of the power battery.

[0023] 2. Since the power battery is pressed by the heat-conducting rod and the first spring, when the car vibrates during its movement, the first spring can extend or shorten accordingly, thereby converting the vibration generated by the vehicle into the elastic potential energy of the first spring and reducing the impact of the vibration on the power battery. In addition, the heat-conducting rod can always stay in close contact with the corresponding power battery under the action of the first spring, ensuring that the temperature generated by the power battery can be accurately transmitted to the temperature sensor.

[0024] 3. This invention features a strip-shaped air inlet. When the ambient temperature is high, the cooling plate is pressed against the top of the power battery by the electric telescopic block, while the strip-shaped air inlet is open. This allows outside air to enter the storage compartment. When the absorbed heat diffuses to the top space of the cooling plate, the outside air entering the storage compartment through the strip-shaped air inlet carries away the heat accumulated in the top space of the cooling plate, thereby increasing the cooling speed of the cooling plate and coolant, and thus improving the cooling effect of the cooling plate and coolant on the battery assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a three-dimensional schematic diagram of the battery compartment and the power battery in this invention;

[0027] Figure 3 This is a three-dimensional schematic diagram of the partition, temperature regulation device, and part of the temperature monitoring device in this invention;

[0028] Figure 4 This is a three-dimensional schematic diagram of the partition, sealing strip, and cooling plate in this invention;

[0029] Figure 5 This is a three-dimensional schematic diagram of the partition, part of the temperature regulation device, and part of the temperature monitoring device in this invention;

[0030] Figure 6 This is a three-dimensional schematic diagram of some of the temperature regulating devices in this invention;

[0031] Figure 7 This is a three-dimensional schematic diagram of the bottom of the cover plate in this invention;

[0032] Figure 8 This is a three-dimensional schematic diagram of some of the temperature monitoring devices in this invention.

[0033] In the diagram: 1. Battery compartment; 2. Power battery; 3. Sealing cover; 4. Separator; 5. Temperature regulation device; 51. Cooling plate; 52. Sealing tube; 53. First limiting rod; 54. Roller; 55. Electric telescopic block; 6. Temperature monitoring device; 60. Heat-conducting rod; 61. First spring; 62. Heat-conducting strip; 63. Heat-conducting plate; 64. Second limiting rod; 65. Second spring; 66. Temperature sensor; 67. Data acquisition unit; 68. Controller; 69. Protective shell; 7. Filter screen; 8. Sealing groove; 9. Sealing strip; 10. Sealing protrusion; 11. Guide strip; 12. U-shaped locking block; 13. Thermal conductive patch. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0035] This invention provides, for example Figures 1 to 8 The power battery temperature monitoring device shown includes a battery compartment 1, which contains multiple power batteries 2. The top of the battery compartment 1 is provided with a sealing cover 3, which is detachably connected to the battery compartment 1 by screws. The bottom of the sealing cover 3 is provided with a sealing cavity, and the bottom of the sealing cover 3 is provided with a partition 4. The bottom of the partition 4 is provided with a storage groove, and a temperature regulating device 5 is provided in the storage groove. The top of the partition 4 is provided with a temperature monitoring device 6.

[0036] During assembly, first place the power battery 2 into the battery compartment 1, then fasten the partition 4 on the top of the battery compartment 1, and keep the temperature regulating device 5 at the bottom of the battery compartment 1 in contact with the top of the power battery 2. Finally, fasten the sealing cover 3 and connect the temperature monitoring device 6 to the power battery 2.

[0037] During use, the temperature monitoring device 6 can monitor the temperature of the power battery 2 in real time. Then, the temperature monitoring device 6 can control the temperature regulating device 5 according to the temperature of the power battery 2, thereby regulating the working temperature of the power battery 2 and improving the working performance of the power battery 2.

[0038] like Figures 3 to 6As shown, the temperature regulating device 5 includes a cooling plate 51, which is hollow and filled with coolant. The top of the cooling plate 51 has the same number of insertion holes as the power battery 2. A sealing tube 52, matching the diameter of the insertion hole, is fixedly inserted into each hole. The bottom of the sealing tube 52 is flush with the bottom of the cooling plate 51, and the top of the sealing tube 52 is vertically slidably inserted into the partition plate 4. Four first limiting rods 53 are vertically fixedly connected to the top of the cooling plate 51, and are symmetrically distributed near both sides of the top of the cooling plate 51. The tops of the first limiting rods 53 are vertically slidably inserted into the partition plate 4. The tops of the two first limiting rods 53 located on the sides... Two rollers 54 are rotatably connected between the two rollers 54. Two electric telescopic blocks 55 are provided on the side of the two rollers 54 that are separated from each other. The electric telescopic blocks 55 are installed on the top of the partition plate 4. The extended end of the electric telescopic block 55 is opposite to the roller 54 on the corresponding side. The thickness of the extended end of the electric telescopic block 55 gradually decreases towards the roller 54. The extended end of the electric telescopic block 55 is always located at the bottom of the roller 54. A U-shaped locking block 12 is fixedly connected to the extended end of the electric telescopic block 55. The opening of the U-shaped locking block 12 faces the non-extendable end of the electric telescopic block 55. The roller 54 is located inside the U-shaped locking block 12. The vertical height of the inclined surface of the extended end of the electric telescopic block 55 is equal to the maximum vertical movement distance of the cooling plate 51.

[0039] When the temperature monitoring device 6 detects that the temperature of the power battery 2 is high, the temperature monitoring device 6 controls the electric telescopic block 55 to shorten. As the electric telescopic block 55 shortens, the roller 54 gradually moves downward along the inclined surface of the extended end of the electric telescopic block 55. As the roller 54 moves downward, the cooling plate 51 also moves closer to the top of the power battery 2 under the action of gravity. When the electric telescopic block 55 is retracted to its shortest point, the bottom of the cooling plate 51 is pressed tightly against the top of the power battery 2, and the roller 54 is also locked inside the U-shaped clamp, thus locking the position of the roller 54 and preventing the cooling plate 51 from moving up and down due to vibration during vehicle operation. When the cooling plate 51 is pressed tightly against the top of the power battery 2, the heat generated by the power battery 2 can be transferred to the cooling plate 51 and the coolant, thereby cooling the power battery 2 and improving the working performance of the power battery 2.

[0040] Conversely, when the temperature monitoring device 6 detects that the temperature of the power battery 2 is low, the temperature monitoring device 6 controls the electric telescopic block 55 to extend. As the electric telescopic block 55 extends, the roller 54 gradually moves upward along the inclined surface of the extended end of the electric telescopic block 55. As the roller 54 moves upward, the cooling plate 51 gradually separates from the top of the power battery 2 under the pull of the first limiting rod 53, thereby forming a heat insulation layer between the bottom of the cooling plate 51 and the top of the power battery 2, reducing the impact of the external temperature on the power battery 2, and allowing the power battery 2 to maintain high working performance.

[0041] like Figure 3 , Figure 5 and Figure 8 As shown, the temperature monitoring device 6 includes multiple retractable heat-conducting rods 60, each with a first spring 61 sleeved on it. The multiple heat-conducting rods 60 are inserted one-to-one into multiple sealing tubes 52. Heat-conducting strips 62 are fixedly connected between the tops of the front heat-conducting rods 60 and between the tops of the rear heat-conducting rods 60. A heat-conducting plate 63 is horizontally fixedly connected between two heat-conducting strips 62. Multiple second limiting rods 64 are vertically slidably inserted through the top of the heat-conducting plate 63. The bottom end of each second limiting rod 64 is vertically fixedly connected to the top of the partition 4, and a second spring 65 is sleeved on the bottom portion of the second limiting rod 64. A temperature sensor 66 is located at the center of the top of the heat-conducting plate 63 and is inserted through the center of the top of the sealing cover 3. A data acquisition unit 67 and a controller 68 are provided on one side of the temperature sensor 66. The data acquisition unit 67 and the controller 68 are both installed on the top of the sealing cover 3. The data acquisition unit 67 is electrically connected to the temperature sensor 66, and the data acquisition unit 67 is connected to the monitoring terminal through a communication device. The controller 68 is electrically connected to multiple electric telescopic blocks 55 and the data acquisition unit 67. The top of the controller 68, the data acquisition unit 67 and the temperature sensor 66 are covered by the same protective shell 69. The protective shell 69 is installed on the top of the sealing cover 3. The bottom of the heat-conducting rod 60 and the temperature sensor 66 are both connected to heat-conducting patches 13. The heat-conducting patches 13 at the bottom of the heat-conducting rod 60 and the heat-conducting patches 13 at the bottom of the temperature sensor 66 are respectively attached to the top of the power battery 2 and the heat-conducting plate 63.

[0042] During assembly, when the separator 4 is placed on top of the battery compartment 1, the heat-conducting pads 13 at the bottom of the multiple heat-conducting rods 60 are also pressed onto the top of the multiple power batteries 2. After the separator 4 is placed, the sealing cover 3 with the temperature sensor 66 installed is fastened on top of the separator 4, and the heat-conducting pads 13 at the bottom of the temperature sensor 66 are pressed together with the heat-conducting plate 63. Then, screws are used to gradually connect it to the battery compartment 1. As the screws are gradually tightened, the heat-conducting plate 63 moves downward under the pressure of the temperature sensor 66, thereby gradually compressing the second spring 65. At the same time, as the heat-conducting plate 63 moves downward, the heat-conducting plate 63 compresses the corresponding multiple heat-conducting rods 60 and the first spring 61 together through the two heat-conducting strips 62, so that the power battery 2 can be gradually pressed by the multiple heat-conducting rods 60, and the bottom of the heat-conducting rods 60 and the power battery 2 maintain close contact. When the screws are fully tightened, the assembly is completed.

[0043] During use, the temperature of the power battery 2 is transferred to the temperature sensor 66 through the heat-conducting rod 60, the heat-conducting strip 62 and the heat-conducting plate 63 in sequence. Then, the data acquisition unit 67 can collect the temperature data sensed by the temperature sensor 66 and finally send it to the monitoring terminal and the controller 68 through the communication device, thereby playing the role of real-time monitoring.

[0044] In addition, while the temperature sensor 66 monitors the temperature of the power battery 2, the controller 68 can control the extension or shortening of the electric telescopic block 55 according to the temperature information collected by the data acquisition unit 67, thereby realizing the contact and separation of the cooling plate 51 and the power battery 2, thus regulating the temperature of the power battery 2 and improving the working performance of the power battery 2.

[0045] In addition, since the power battery 2 is pressed by the heat-conducting rod 60 and the first spring 61, when the car vibrates during its movement, the first spring 61 can extend or shorten accordingly, thereby converting the vibration generated by the vehicle into the elastic potential energy of the first spring 61, reducing the impact of the vibration on the power battery 2. Furthermore, the heat-conducting rod 60 can always remain in close contact with the corresponding power battery 2 under the action of the first spring 61, ensuring that the temperature generated by the power battery 2 can be accurately transmitted to the temperature sensor 66.

[0046] like Figure 1 and Figure 3 As shown, horizontal strip-shaped air inlets are opened through both sides of the storage tank. The strip-shaped air inlets are close to the top wall of the storage tank, and a filter screen 7 is installed inside the strip-shaped air inlets. Guide strips 11 are fixedly connected to both sides of the sealing cover 3 near the bottom. The bottom of the guide strips 11 gradually slopes towards the sealing cover 3, and the guide strips 11 are close to the top of the strip-shaped air inlets.

[0047] With the addition of a strip-shaped air intake, when the ambient temperature is high, the cooling plate 51 is pressed against the top of the power battery 2 by the electric telescopic block 55, while the strip-shaped air intake is open, allowing outside air to enter the storage compartment. As the temperature generated by the power battery 2 is gradually absorbed by the cooling plate 51 and the coolant, the absorbed heat can diffuse to the top space of the cooling plate 51. At this time, the outside air entering the storage compartment through the strip-shaped air intake can carry away the heat accumulated in the top space of the cooling plate 51, thereby increasing the cooling speed of the cooling plate 51 and the coolant, and thus improving the cooling effect of the cooling plate 51 and the coolant on the battery components. In addition, with the addition of a guide bar 11, when the car is running, the guide bar 11 can guide outside air into the storage compartment more quickly, thereby improving the cooling efficiency of the cooling plate 51 and the coolant. The filter screen 7 can filter the air entering the storage compartment, preventing dust and other debris from entering the storage compartment through the strip-shaped air intake.

[0048] When the outside temperature is low, the cooling plate 51 is separated from the top of the power battery 2 by the electric telescopic block 55, and the strip-shaped air intake can be blocked by the cooling plate 51, thus keeping the storage slot isolated from the outside. The space between the bottom of the cooling plate 51 and the power battery 2 is in a sealed state, thereby forming a heat insulation layer between the cooling plate 51 and the power battery 2, thereby reducing the impact of the outside temperature on the power battery 2 and allowing the power battery 2 to maintain high working performance.

[0049] like Figure 2 and Figure 4 As shown, notches are provided on both sides of the top of the battery compartment 1. A strip-shaped sealing groove 8 is provided on the bottom inner wall of the notch. A sealing strip 9 is slidably inserted into the sealing groove 8. The sealing strip 9 is vertically and fixedly connected to the bottom of the partition 4.

[0050] By providing a sealing strip 9, when the partition 4 is connected to the battery compartment 1, the sealing strip 9 can improve the airtightness between the bottom of the partition 4 and the battery compartment 1, preventing moisture from entering the battery compartment 1 through the gap between the partition 4 and the battery compartment 1, and ensuring the stable operation of the power battery 2.

[0051] like Figure 3 , Figure 5 and Figure 7 As shown, a rectangular sealing protrusion 10 is fixedly connected to the top of the partition 4, and multiple insertion holes are located inside the sealing protrusion 10. The outer periphery of the sealing protrusion 10 fits against the inner wall of the sealing cavity at the bottom of the sealing cover 3, and the height of the sealing protrusion 10 matches the depth of the sealing cavity.

[0052] When the cover plate and the separator 4 are fastened together, the sealing protrusion 10 on the top of the separator 4 can be inserted into the sealing cavity at the bottom of the sealing cover 3, thereby improving the airtightness of the inner side of the sealing protrusion 10 and preventing water vapor from entering the battery compartment 1 through the gap between the sealing cover 3 and the separator 4, thus ensuring the stable operation of the power battery 2.

[0053] The present invention also provides a method of using any one of the above-mentioned methods in a power battery temperature monitoring device, the method comprising the following steps:

[0054] Step 1: Install the separator 4 onto the top of the battery compartment 1, and ensure that the cooling plate 51 at its bottom is in close contact with the top of the power battery 2.

[0055] Step 2: Install the sealing cover 3 onto the top of the partition 4, and use screws to connect the sealing cover 3 to the battery compartment 1;

[0056] Step 3: Install the temperature sensor 66 onto the top of the sealing cover 3, and ensure that its bottom is in close contact with the heat-conducting plate 63;

[0057] Step 4: Temperature sensor 66 can work with data acquisition unit 67 to monitor the temperature of power battery 2, and adjust cooling plate 51 through controller 68, so as to monitor the temperature of power battery 2 and adjust the temperature of power battery 2 at the same time.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A power battery temperature monitoring device, comprising a battery compartment (1), characterized in that: The battery compartment (1) is equipped with multiple power batteries (2). The top of the battery compartment (1) is provided with a sealing cover (3). The sealing cover (3) and the battery compartment (1) are detachably connected together by screws. The bottom of the sealing cover (3) is provided with a sealing cavity. The bottom of the sealing cover (3) is provided with a partition (4). The bottom of the partition (4) is provided with a storage slot. The storage slot is provided with a temperature regulating device (5). The top of the partition (4) is provided with a temperature monitoring device (6).

2. The power battery temperature monitoring device according to claim 1, characterized in that: The temperature regulating device (5) includes a cooling plate (51), which is hollow and filled with coolant. The top of the cooling plate (51) has a number of insertion holes equal to the number of power batteries (2). A sealing tube (52) matching the diameter of the insertion hole is fixedly inserted into each hole. The bottom of the sealing tube (52) is flush with the bottom of the cooling plate (51). The top of the sealing tube (52) is vertically slidably inserted into the partition plate (4). Four first limiting rods (53) are vertically fixedly connected to the top of the cooling plate (51), and these four first limiting rods (53) are symmetrically distributed on the cooling plate (51). 1) At the top near both sides, the top end of the first limiting rod (53) is vertically slidably inserted into the partition (4). A roller (54) is rotatably connected between the top ends of the two first limiting rods (53) on both sides. Two electric telescopic blocks (55) are provided on the side of the two rollers (54) that are separated. The electric telescopic blocks (55) are installed on the top of the partition (4), and the extended end of the electric telescopic blocks (55) is opposite to the roller (54) on the corresponding side. The thickness of the extended end of the electric telescopic blocks (55) gradually becomes thinner towards the roller (54), and the extended end of the electric telescopic blocks (55) is always located at the bottom of the roller (54).

3. The power battery temperature monitoring device according to claim 2, characterized in that: The temperature monitoring device (6) includes multiple retractable heat-conducting rods (60), and a first spring (61) is sleeved on each heat-conducting rod (60). The multiple heat-conducting rods (60) are inserted into multiple sealing tubes (52) one by one. Heat-conducting strips (62) are fixedly connected between the tops of the multiple heat-conducting rods (60) on the front side and between the tops of the multiple heat-conducting rods (60) on the rear side. A heat-conducting plate (63) is horizontally fixedly connected between two heat-conducting strips (62). Multiple second limiting rods (64) are vertically slidably inserted through the top of the heat-conducting plate (63). The bottom end of the second limiting rod (64) is vertically fixedly connected to the top of the partition (4), and a second spring (65) is sleeved on the part of the second limiting rod (64) at the bottom of the heat-conducting plate (63). The center of the top of the heat-conducting plate (63) is... A temperature sensor (66) is provided, which is inserted through the top center of the sealing cover (3). A data acquisition device (67) and a controller (68) are provided on one side of the temperature sensor (66). The data acquisition device (67) and the controller (68) are both installed on the top of the sealing cover (3). The data acquisition device (67) is electrically connected to the temperature sensor (66), and the data acquisition device (67) is connected to the monitoring terminal via a communication device. The controller (68) is electrically connected to multiple electric telescopic blocks (55) and the data acquisition device (67). The top of the controller (68), the data acquisition device (67) and the temperature sensor (66) are covered by the same protective shell (69), which is installed on the top of the sealing cover (3).

4. The power battery temperature monitoring device according to claim 1, characterized in that: Both sides of the storage slot are provided with horizontal strip-shaped air inlets, which are close to the top wall of the storage slot and are equipped with filters (7).

5. The power battery temperature monitoring device according to claim 3, characterized in that: The battery compartment (1) has notches on both sides of the top. A strip-shaped sealing groove (8) is provided on the bottom inner wall of the notch. A sealing strip (9) is slidably inserted into the sealing groove (8). The sealing strip (9) is vertically fixed to the bottom of the partition (4).

6. The power battery temperature monitoring device according to claim 5, characterized in that: A rectangular sealing protrusion (10) is fixedly connected to the top of the partition (4), and multiple insertion holes are located inside the sealing protrusion (10). The outer periphery of the sealing protrusion (10) fits against the inner wall of the sealing cavity at the bottom of the sealing cover (3), and the height of the sealing protrusion (10) matches the depth of the sealing cavity.

7. The power battery temperature monitoring device according to claim 6, characterized in that: Guide strips (11) are fixedly connected to both sides of the sealing cover (3) near the bottom. The bottom of the guide strips (11) gradually slopes towards the sealing cover (3), and the guide strips (11) are close to the top of the strip-shaped air inlet.

8. The power battery temperature monitoring device according to claim 2, characterized in that: The extended end of the electric telescopic block (55) is fixedly connected to a U-shaped locking block (12). The opening of the U-shaped locking block (12) faces the non-extendable end of the electric telescopic block (55), and the roller (54) is located inside the U-shaped locking block (12). The vertical height of the inclined surface of the extended end of the electric telescopic block (55) is equal to the maximum vertical movement distance of the cooling plate (51).

9. A power battery temperature monitoring device according to claim 3, characterized in that: The bottom of the heat-conducting rod (60) and the temperature sensor (66) are both connected to a heat-conducting patch (13). The heat-conducting patch (13) at the bottom of the heat-conducting rod (60) and the heat-conducting patch (13) at the bottom of the temperature sensor (66) are respectively attached to the top of the power battery (2) and the heat-conducting plate (63).

10. A method of using the power battery temperature monitoring device according to any one of claims 1 to 8, characterized in that: The method includes the following steps: Step 1: Install the separator (4) onto the top of the battery compartment (1) and make the cooling plate (51) at its bottom stick to the top of the power battery (2); Step 2: Install the sealing cover (3) onto the top of the partition (4) and use screws to connect the sealing cover (3) to the battery compartment (1); Step 3: Install the temperature sensor (66) onto the top of the sealing cover (3) and ensure that its bottom is in close contact with the heat-conducting plate (63); Step 4: The temperature sensor (66) can work with the data acquisition unit (67) to monitor the temperature of the power battery (2) and adjust the cooling plate (51) through the controller (68), so that the temperature of the power battery (2) can be monitored and adjusted at the same time.

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