Automatic temperature adjusting equipment for charging of automobile power battery

Abstract

The invention discloses an automatic temperature adjusting device for automobile power battery charging, which comprises a power battery, the bottom end of the power battery is provided with a mounting rack, the inner wall of the bottom end of the mounting rack is provided with a condenser pipe for battery cooling, and the outer wall of the condenser pipe is provided with an adjusting assembly for adjusting the battery cooling effect. The adjusting assembly comprises an adjuster arranged on the outer wall of the condensation pipe, a first connecting rotating rod is rotationally installed at the top end of the adjuster, a second connecting rod is arranged at the top end of the first connecting rotating rod, and the top end of the second connecting rod penetrates through the connector and extends to the top end of the connector. And a motor is fixedly mounted at the top end of the second connecting rod. The cooling assembly has the beneficial effects that by arranging the adjusting assembly, the flexibility of the cooling assembly is improved, the starting temperature coverage range of the cooling assembly is enlarged, the charging and discharging efficiency of the power battery is improved, and the service life of the power battery is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile power battery charging equipment, and in particular to an automatic temperature regulating device for automobile power battery charging. Background Art

[0002] Power batteries are the batteries that power electric vehicles, such as electric cars and electric motorcycles. They feature high energy density, high power output, long cycle life, and excellent safety. Common types include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries have become the mainstream due to their superior overall performance. They convert chemical energy into electrical energy through chemical reactions, powering the vehicle's drive motor and enabling travel. Power batteries are also equipped with a battery management system to monitor and manage the battery's status, ensuring safe and efficient operation.

[0003] Batteries generate heat during the charging and discharging process. If the heat generated by the battery is not discharged in time, the battery temperature will be too high, increasing the battery attenuation. The battery's available capacity attenuation rate will be significantly accelerated, and even cause safety accidents. Therefore, power batteries are often equipped with cooling devices. The invention patent application with publication number CN119189799A discloses a temperature control device for charging automotive power batteries. By arranging a condenser on the mounting frame, the power battery is cooled to avoid the power battery from overheating due to charging and discharging at the same time, which affects the life of the power battery. The linear motor controls the movement of the push frame to drive the power switch to rotate, so that the power switch transmits the electrical energy of the charging pile to the condenser through the conductive wire, so that the condenser cools the high temperature generated during the charging of the power battery. In this way, there is no need for the power battery to discharge during the charging process, thereby being able to control the temperature of the power battery.

[0004] In the prior art, once the temperature sensor arranged next to the mounting frame detects that the temperature of the power battery rises to a preset threshold, the power switch is controlled to transmit the electric energy of the charging pile to the condensing device through a wire, so that the condensing device operates to cool down the battery. However, setting only a single threshold value can easily make the cooling component inflexible. When the threshold value is set low, it is easy to frequently cut off the charging process of the power battery for cooling treatment, resulting in a problem of reduced charging efficiency of the power battery. When the threshold value is set high, it is easy to cause more load on the power battery, affecting the life of the power battery. Regardless of the temperature, the flow rate of the condensate in the condenser tube remains unchanged. When the power battery temperature rises at a low level, it is easy to cause the battery temperature to be overcooled, affecting the charging and discharging performance and the life of the power battery. When the power battery temperature is high, the fixed cooling flow rate may be difficult to effectively reduce the temperature in a timely manner, resulting in accelerated battery aging and increased safety hazards. Summary of the Invention

[0005] The main purpose of the present invention is to propose a temperature automatic regulation device for charging automobile power batteries, aiming to solve the problem that the threshold value of the cooling device in the existing temperature automatic regulation device for charging automobile power batteries is single, which affects the charging efficiency or life of the power battery.

[0006] To solve the above problems, the present invention proposes an automatic temperature adjustment device for charging an automotive power battery, comprising a power battery, a mounting bracket provided at the bottom end of the power battery, a condenser tube for battery cooling provided on the inner wall of the bottom end of the mounting bracket, and an adjustment component for adjusting the battery cooling effect provided on the outer wall of the condenser tube;

[0007] The adjustment assembly includes a regulator arranged on the outer wall of the condenser tube, and a first connecting rod is rotatably installed on the top of the regulator. A second connecting rod is provided on the top of the first connecting rod. The top of the second connecting rod passes through the connector and extends to the top of the connector. The connector is installed on the top of the power battery. A motor is fixedly installed on the top of the second connecting rod, and the motor is connected to the external power supply through a wire.

[0008] Preferably, a temperature automatic regulating device for charging a vehicle power battery further comprises a cooling component and a charging switch;

[0009] The cooling assembly is fixedly installed on one side of the condenser tube, and contains a temperature sensor, a water pump and a control chip. The cooling assembly is electrically connected to the motor through a wire;

[0010] The charging switch is fixedly mounted on the top of the connector and is electrically connected to the power battery through the connector.

[0011] Preferably, a valve core is fixedly mounted on the bottom end of the first connecting rod;

[0012] The valve core is divided into a straight portion at the top and a truncated cone portion at the bottom, and a thread line is provided on the outer wall of the top of the straight portion of the valve core;

[0013] Water inlet grooves are provided on both sides of the valve core, and one end of the water inlet groove close to the center of the valve core is connected to a water outlet groove, and the water outlet groove is provided at the bottom end of the valve core.

[0014] Preferably, a limiting groove is provided on one side of the water inlet groove away from one end of the water outlet groove, the limiting grooves are opened on the outer wall of the valve core, the top of the limiting grooves abuts against the limiting blocks, and the limiting blocks are fixedly installed on the inner wall of the regulator.

[0015] Optionally, a plurality of water inlet troughs may be symmetrically installed with the water outlet trough as the axis.

[0016] Preferably, a transverse tube groove and a curved tube groove are provided inside the regulator, and the cross-sectional diameter of both the transverse tube groove and the curved tube groove is equal to the cross-sectional diameter of the straight portion of the valve core;

[0017] The maximum distance between the bottom end of the valve core frustum and the bottom end of the transverse tube groove is greater than the distance between the top and bottom ends of the valve core frustum.

[0018] Optionally, the maximum distance from the bottom end of the water inlet groove to the bottom end of the limit groove is eighty percent of the distance between the top end and the bottom end of the valve core frustum.

[0019] Preferably, a non-circular block is fixedly mounted on the bottom end of the second connecting rod, and a groove of a corresponding shape is formed on the top end of the first connecting rotating rod.

[0020] Beneficial effect: The technical solution of the present invention is to set up an adjustment component so that when the temperature sensor in the cooling component detects that the temperature of the power battery is greater than a preset threshold, the condenser can be started and a signal is sent to control the start of the motor, so that the motor adjusts the flow rate of the condensate in the regulator according to the actual temperature detected by the cooling component, thereby improving the flexibility of the cooling component, increasing the starting temperature coverage range of the cooling component, improving the charging and discharging efficiency of the power battery, and extending the service life of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the main structure of a temperature automatic regulating device for charging a vehicle power battery according to the present invention;

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the connector of the present invention;

[0024] Figure 3 It is a schematic diagram of the split structure of the present invention;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a structural schematic diagram of the rotating wheel of the present invention;

[0027] Figure 6 is a schematic cross-sectional structural diagram of the regulating assembly of the present invention;

[0028] Figure 7 This invention Figure 6 Enlarged view of point B in the middle;

[0029] Figure 8 It is a schematic cross-sectional structural diagram of the adjustment component of the present invention from another viewing angle.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. Power battery; 2. Mounting bracket; 3. Condenser; 4. Regulator; 5. First connecting rod; 6. Second connecting rod; 7. Connector; 8. Motor; 9. Cooling assembly; 10. Charging switch; 11. Valve core; 12. Water inlet groove; 13. Water outlet groove; 14. Limiting groove; 15. Limiting block; 16. Rotating wheel; 17. Tooth plate; 18. Fixed ratchet block; 19. Sliding groove; 20. Push frame; 21. Switch block; 22. Rotating ratchet block; 23. Torsion spring shaft; 24. Rotating groove; 25. Rotating tooth block; 26. Reset spring; 27. Protective rod. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention proposes an automatic temperature regulation device for charging an automobile power battery. The automatic temperature regulation device for charging an automobile power battery is configured with a regulation component so that when the temperature sensor in the cooling component 9 detects that the temperature of the power battery 1 is greater than a preset threshold, the condenser 3 can be started and a signal is sent to control the start of the motor 8 so that the motor 8 regulates the flow rate of the condensate in the regulator 4, thereby improving the flexibility of the cooling component 9, increasing the starting temperature coverage range of the cooling component 9, improving the charging and discharging efficiency of the power battery 1, and extending the service life of the power battery 1.

[0037] Example 1

[0038] In this embodiment, the structure of the temperature automatic regulating device for charging a vehicle power battery is as follows: Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8 As shown, Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 Only a part of the temperature automatic adjustment device is shown, mainly showing the part related to the present invention. The temperature automatic adjustment device of the present invention includes a power battery 1, a mounting frame 2 is provided at the bottom end of the power battery 1, a condenser 3 for battery cooling is provided on the inner wall of the bottom end of the mounting frame 2, and an adjustment component for adjusting the battery cooling effect is provided on the outer wall of the condenser 3. Figures 6 to 8As shown, the regulating assembly includes a regulator 4 arranged on the outer wall of the condenser 3, and a first connecting rod 5 is rotatably installed on the top of the regulator 4. A second connecting rod 6 is provided on the top of the first connecting rod 5, and the top of the second connecting rod 6 passes through a connector 7 and extends to the top of the connector 7. The connector 7 is installed on the top of the power battery 1, and a motor 8 is fixedly installed on the top of the second connecting rod 6. The motor 8 is connected to the external power supply through a wire (the motor 8 is a mature existing technology, so its internal structure is not repeated). In addition, the temperature automatic regulating device also includes a cooling assembly 9 and a charging switch 10. The cooling assembly 9 is fixedly installed on one side of the condenser 3, and the cooling assembly 9 contains a temperature sensor, a water pump and a control Chip (all components of the cooling assembly 9 in this embodiment are mature existing technologies, so its internal structure is not described in detail), the cooling assembly 9 is electrically connected to the motor 8 through a wire, and the charging switch 10 is fixedly installed on the top of the connector 7 and electrically connected to the power battery 1 through the connector 7, wherein by separating the motor 8 and the charging switch 10, compared with the existing technology, when the temperature rises by a small amount, the motor 8 can supply power to the cooling assembly 9 alone, and at this time the charging switch 10 can still continue to assist the power battery 1 in charging, avoiding the situation where the charging switch 10 stops assisting the charging of the power battery 1 after the temperature rises to a preset value, and controls the cooling assembly 9 to start cooling, and when the temperature drops, the charging switch 10 is turned off The cooling component 9 continues to assist the power battery 1 in charging. At this time, the temperature in the power battery 1 rises again, causing the charging switch 10 to repeatedly switch on and off the charging process of the power battery 1, resulting in low charging efficiency of the power battery 1 and easily causing damage to the power battery 1, which in turn shortens the service life of the power battery 1. In addition, the prior art only sets a single preset threshold value, which makes the cooling component 9 not flexible enough. If the threshold value is set too low, it is easy to frequently cut off the charging process of the power battery 1 for cooling treatment, resulting in a decrease in the charging efficiency of the power battery 1. If the threshold value is set too high, it is easy to cause more load on the power battery 1, affecting the service life of the power battery 1. Regardless of the temperature, the flow rate of the condensate in the condenser 3 remains unchanged, which is easy to cause the power battery 1 to be cooled. When the temperature rise of the power battery 1 is low, the battery temperature is overcooled, affecting the charge and discharge performance and life of the power battery 1. When the temperature of the power battery 1 is high, the fixed cooling flow rate may be difficult to reduce the temperature in a timely and effective manner, resulting in accelerated battery aging and increased safety hazards. The temperature regulating device adopts the regulating component of the present invention, which can send a signal to control the motor 8 in real time through the temperature sensor provided in the cooling component 9, so that the motor 8 can adjust the flow rate of the condensate in the regulator 4, thereby adjusting the cooling efficiency of the cooling component 9, so that the cooling component 9 can provide a suitable cooling effect according to the actual temperature of the power battery 1, thereby improving the protection effect of the power battery 1 and increasing the starting temperature coverage range of the cooling component 9.This improves the charging and discharging efficiency of the power battery 1 and further extends the service life of the power battery 1.

[0039] In this embodiment, if Figure 6 As shown, whether it is a hard air pipe or a soft air pipe, it usually includes an air intake pipe water inlet groove 12 and a pipe joint valve core 11 arranged at the end of the air intake pipe water inlet groove 12. The air pipe and the intake duct torsion spring shaft 23 are connected by tightly inserting the pipe joint valve core 11 into the second connecting rod 6 of the socket.

[0040] Furthermore, in this embodiment, Figures 6 to 8As shown, a valve core 11 is fixedly installed at the bottom end of the first connecting rod 5. The valve core 11 is divided into a straight portion at the top and a frustum portion at the bottom. In addition to the frustum shape, the bottom end of the valve core 11 can also be set to a ball valve shape, a plunger shape or a butterfly shape. In this embodiment, it is preferably a frustum shape, which can have higher accuracy when adjusting the condensate flow rate in the regulator 4, and the condensate flow rate changes linearly during the movement of the valve core 11, which makes it easier to regulate the flow rate. The outer wall of the top end of the straight portion of the valve core 11 is provided with a thread, and the first connecting rod 5 can be rotated to drive the valve core 11. The valve core 11 is rotated to move up and down. At this time, the valve core 11 can drive the frustum at the bottom to move, changing the flow rate of the condensate in the regulator 4. Water inlet grooves 12 are provided on both sides of the valve core 11. One end of the water inlet groove 12 close to the center of the valve core 11 is connected to a water outlet groove 13. The water outlet groove 13 is provided at the bottom end of the valve core 11. Compared with the traditional structure, when the valve core 11 closes the regulator 4, the condensate can still circulate through the water inlet groove 12 and the water outlet groove 13. With this design, when the temperature sensor in the cooling assembly 9 detects that the temperature in the power battery 1 rises to the minimum threshold, the condensate can be first The signal is sent to start the motor 8, so that the motor 8 starts the cooling assembly 9 through the wire, so that the cooling assembly 9 cools the power battery 1 with the minimum efficiency. When the temperature rise in the power battery 1 is small, this design can improve the accuracy of the temperature regulation of the cooling assembly 9, so that the power battery 1 is always kept in the best working stable range, which helps to improve the battery performance, reduce unnecessary energy consumption, reduce the load of the cooling assembly 9, and slow down the wear and aging of the cooling assembly 9. In addition, the water inlet trough 12 can be symmetrically installed with the water outlet trough 13 as the axis, according to the actual working environment of the power battery 1. The number of water inlet slots 12 to be opened is determined based on factors such as the environment and load conditions to control the minimum cooling efficiency of the cooling assembly 9. The symmetrical design of the water inlet slots 12 is to balance the flow rate of the condensate on one side of the water inlet slot 12. When the water inlet slot 12 is an asymmetric structural design, it is easy to cause the condensate to produce different pressure losses when passing through the water inlet slots 12 at different positions. Specifically, the flow rate of the condensate on the narrower side is higher and the pressure loss is larger, while the flow rate on the wider side is lower and the pressure loss is smaller, thereby affecting the pressure distribution of the entire cooling assembly 9, and further affecting the stability and reliability of the cooling assembly 9.

[0041] Furthermore, in this embodiment, a limiting groove 14 is provided on one side of the water inlet groove 12 away from one end of the water outlet groove 13. The limiting grooves 14 are all opened on the outer wall of the valve core 11. The top of the limiting grooves 14 abuts against the limiting blocks 15. The limiting blocks 15 are all fixedly installed on the inner wall of the regulator 4. This design can limit the movement range of the valve core 11. When the valve core 11 rises to open the regulator 4, the highest horizontal position of the valve core 11 is limited to prevent the flow rate of the condensate in the cooling component 9 from being too fast, causing the cooling component 9 to Long-term high load or inappropriate working conditions will increase the probability of failure and shorten the service life of the cooling component 9. When the valve core 11 drops to close the regulator 4, the lowest horizontal position of the valve core 11 is limited. Preferably, a transverse pipe groove and a curved pipe groove are provided inside the regulator 4. Whether it is the transverse pipe groove or the curved pipe groove, the cross-sectional diameter is equal to the cross-sectional diameter of the straight part of the valve core 11. The maximum distance between the bottom end of the truncated cone of the valve core 11 and the bottom end of the transverse pipe groove is greater than the top end of the truncated cone of the valve core 11. The distance between the top and the bottom of the valve core 11 is equal to the distance between the top and the bottom of the water inlet groove 12 when the valve core 11 is at the lowest horizontal position. With this design, when the valve core 11 is raised to start the flow rate adjustment, the water inlet groove 12 is completely moved to the top of the transverse groove, so that the water inlet groove 12 will not affect the flow control of the condensate by the valve core 11, thereby increasing the stability and reliability of the adjustment component. On the other hand, the distance between the bottom of the water inlet groove 12 and the bottom of the limit groove 14 is equal to the distance between the top and the bottom of the water inlet groove 12. The maximum distance is eighty percent of the distance between the top and bottom ends of the conical portion of the valve core 11. Because the range of movement of the valve core 11 is small, it is difficult to meet the flow rate requirements of the cooling component 9. If the range of movement of the valve core 11 is large, it may cause the valve core 11 to be difficult to accurately control the flow rate change. The movement range of the valve core 11 adopts the design in this embodiment, which can not only achieve precise adjustment of small flow rates to meet the requirements of the cooling component 9 at low loads, but also provide sufficient flow capacity at large flows, so that the cooling component 9 can operate stably under different working conditions.

[0042] In addition, a non-circular block is fixedly installed at the bottom end of the second connecting rod 6, and a groove of a corresponding shape is provided at the top end of the first connecting rotating rod 5. On the one hand, the motor 8 can drive the first connecting rotating rod 5 to rotate through the second connecting rod 6, thereby driving the adjustment component to operate. On the other hand, this mutually abutting connection method can facilitate the connection and separation between the connector 7 and the mounting bracket 2, making the maintenance of the automatic temperature adjustment equipment more convenient.

[0043] Example 2

[0044] In order to further explain the first embodiment, in this embodiment, Figures 2 to 5As shown, the outer wall of the top end of the second connecting rod 6 is provided with a closing assembly, and the closing assembly includes a rotating wheel 16 provided on the outer wall of the top end of the second connecting rod 6, and tooth plates 17 are engaged on both sides of the rotating wheel 16, and a fixed ratchet block 18 is fixedly installed at one end of the tooth plate 17. The tooth plates 17 are all slidably installed on the top end of the sliding groove 19, and the sliding grooves 19 are all opened on the inner wall of the connector 7. The end of the tooth plate 17 close to the fixed ratchet block 18 is abutted against a push frame 20, wherein the distance between the two sides of the cross section of the end of the sliding groove 19 close to the push frame 20 is greater than the distance between the two sides of the cross section of the end of the sliding groove 19 away from the push frame 20, so that the narrower end of the sliding groove 19 can limit the tooth plate 17 and guide, and the wider end of the sliding groove 19 can avoid obstructing the movement of the fixed ratchet block 18. The inner side of the top of the push frame 20 is provided with a switch block 21, and the switch block 21 is fixedly mounted on one side of the charging switch 10. With this design, when the temperature sensor in the cooling assembly 9 detects the temperature rise in the power battery 1 and generates a signal to control the motor 8 to adjust the flow rate in the regulator 4 through the second connecting rod 6 and the first connecting rotating rod 5, the second connecting rod 6 also drives the tooth plate 17 to move through the rotating wheel 16. When the temperature in the power battery 1 exceeds the maximum threshold, the tooth plate 17 is close to one end of the fixed ratchet block 18 and pushes the push frame 20, so that the push frame 20 drives the switch block 2 1 rotates, thereby causing the charging switch 10 to close the connection between the power battery 1 and the external charging pile, preventing the cooling component 9 from being unable to prevent the temperature inside the power battery 1 from rising, causing the power battery 1 to be damaged or even burn and explode. Furthermore, a plurality of rotating ratchet blocks 22 are evenly arranged on one side of the sliding groove 19, and the inner wall of the rotating ratchet block 22 is fixedly installed with a torsion spring shaft 23. At the same time, a warning threshold is also set. When the temperature inside the power battery 1 reaches the warning threshold, the motor 8 drives the tooth plate 17 to move a distance equal to the distance between the rotating ratchet blocks 22 through the second connecting rod 6 and the rotating wheel 16. This design can rotate each time the temperature of the power battery 1 reaches the warning threshold. The moving wheel 16 will drive the fixed ratchet block 18 to move a distance in the direction close to the push frame 20 through the toothed plate 17. At this time, the fixed ratchet block 18 just moves to one side of the rotating ratchet block 22, so that the rotating ratchet block 22 hinders the toothed plate 17 from moving in the direction close to the rotating wheel 16 by abutting against the fixed ratchet block 18. When the power battery 1 reaches the warning threshold value many times, the toothed plate 17 will push the push frame 20, so that the push frame 20 turns off the charging switch 10 through the switch block 21, thereby avoiding the problem that although the power battery 1 has not reached the maximum threshold value, reaching the warning threshold value many times also means that there is aging wear problem inside the power battery 1, which is prone to combustion and explosion risks. Further, as Figure 4As shown, a rotating groove 24 is opened on both sides of the rotating wheel 16, and a rotating tooth block 25 is rotatably installed on the inner wall of the rotating groove 24. When the temperature of the power battery 1 reaches the warning threshold, the motor 8 drives the rotating wheel 16 to rotate and reset through the second connecting rod 6. Since the rotating ratchet block 22 abuts against the fixed ratchet block 18 to prevent the tooth plate 17 from resetting, the rotating tooth block 25 can rotate to the inner wall of the rotating groove 24 to prevent motion interference. The rotating tooth block 25 and the rotating groove 24 are connected by a reset spring 26. This design allows the reset spring 26 to release its elastic potential energy after the rotating wheel 16 is reset, and elastic deformation occurs to push the reset spring 26 to reset. The reset spring 26 is wrapped around the outer wall of the protective rod 27. The protective rod 27 passes through the rotating tooth block 25 and is installed on the inner wall of the rotating tooth block 25, which can provide protection for the elastic deformation of the reset spring 26, thereby extending the service life of the reset spring 26.

[0045] In summary, in combination with the first and second embodiments, a minimum threshold, a start threshold, a warning threshold, and a maximum threshold are set in the control chip of the cooling component 9;

[0046] When the temperature sensor in the cooling assembly 9 detects that the temperature in the power battery 1 reaches a minimum threshold, the control chip in the cooling assembly 9 sends a signal to control the motor 8 to start the cooling assembly 9, so that the cooling assembly 9 cools the power battery 1 at the minimum cooling efficiency. The minimum threshold is generally set between 32.5°C and 35°C.

[0047] When the temperature sensor in the cooling assembly 9 detects that the temperature inside the power battery 1 exceeds the starting threshold, the control chip in the cooling assembly 9 sends a signal to control the motor 8 to drive the second connecting rod 6 to rotate, the second connecting rod 6 drives the first connecting rotating rod 5 to rotate, and the first connecting rotating rod 5 drives the valve core 11 to move, so that the valve core 11 opens the pipe groove in the regulator 4. At this time, the rising distance of the valve core 11 is linearly related to the temperature inside the power battery 1, so that the regulating assembly adjusts the cooling efficiency of the cooling assembly 9 according to the actual temperature inside the power battery 1. The starting threshold is generally set to be 10% higher than the minimum threshold;

[0048] When the temperature sensor in the cooling assembly 9 detects that the temperature in the power battery 1 reaches the warning threshold, the rotating wheel 16 will drive the fixed ratchet block 18 to move a distance in the direction close to the push frame 20 through the toothed plate 17. At this time, the fixed ratchet block 18 just moves to one side of the rotating ratchet block 22, so that the rotating ratchet block 22 abuts against the fixed ratchet block 18 to prevent the toothed plate 17 from moving in the direction close to the rotating wheel 16, thereby recording this temperature rise. When the power battery 1 reaches the warning threshold multiple times, the toothed plate 17 will push the push frame 20, so that the push frame 20 turns off the charging switch 10 through the switch block 21. At this time, the maintenance personnel should inspect and maintain the power battery 1. The warning threshold is designed according to actual conditions. The smaller the warning threshold, the more the rotating ratchet blocks 22, the more frequent the warning times, the higher the safety, but at the same time the higher the maintenance cost. In this embodiment, the warning threshold is set to 40°C;

[0049] When the temperature sensor in the cooling assembly 9 detects that the temperature inside the power battery 1 has reached the maximum threshold, the tooth plate 17 abuts against one end of the fixed ratchet block 18 and pushes the push frame 20, so that the push frame 20 drives the switch block 21 to rotate, thereby causing the charging switch 10 to close the connection between the power battery 1 and the external charging pile, preventing the cooling assembly 9 from being unable to prevent the temperature inside the power battery 1 from rising, causing the power battery 1 to be damaged or even burn and explode. The maximum threshold is set to 65°C for lithium iron phosphate batteries and 60°C for ternary lithium batteries in accordance with the "New Energy Vehicle Operation Safety Performance Inspection Procedures".

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A temperature automatic regulating device for charging a power battery of an automobile, comprising a power battery (1), characterized in that: The bottom end of the power battery (1) is provided with a mounting frame (2), the inner wall of the bottom end of the mounting frame (2) is provided with a condenser tube (3) for cooling the battery, and the outer wall of the condenser tube (3) is provided with an adjustment component for adjusting the cooling effect of the battery; The regulating assembly includes a regulator (4) arranged on the outer wall of the condenser (3), a first connecting rod (5) is rotatably installed at the top end of the regulator (4), a second connecting rod (6) is arranged at the top end of the first connecting rod (5), the top end of the second connecting rod (6) passes through a connector (7) and extends to the top end of the connector (7), the connector (7) is installed at the top end of the power battery (1), a motor (8) is fixedly installed at the top end of the second connecting rod (6), and the motor (8) is connected to an external power supply through a wire.

2. The temperature automatic regulating device for charging a vehicle power battery according to claim 1, characterized in that: Also includes a cooling assembly (9) and a charging switch (10); The cooling assembly (9) is fixedly mounted on one side of the condenser (3), and the cooling assembly (9) contains a temperature sensor, a water pump, and a control chip. The cooling assembly (9) is electrically connected to the motor (8) via a wire; The charging switch (10) is fixedly mounted on the top of the connector (7) and is electrically connected to the power battery (1) through the connector (7).

3. The temperature automatic regulating device for charging a vehicle power battery according to claim 1, characterized in that: A valve core (11) is fixedly mounted on the bottom end of the first connecting rod (5); The valve core (11) is divided into a straight portion at the top and a truncated cone portion at the bottom, and a thread is provided on the outer wall of the top of the straight portion of the valve core (11); Water inlet grooves (12) are provided on both sides of the valve core (11), and one end of the water inlet groove (12) close to the center of the valve core (11) is connected to a water outlet groove (13), and the water outlet groove (13) is provided at the bottom end of the valve core (11).

4. The temperature automatic regulating device for charging a vehicle power battery according to claim 3, characterized in that: A limiting groove (14) is provided on one side of the water inlet groove (12) away from one end of the water outlet groove (13), the limiting grooves (14) are all opened on the outer wall of the valve core (11), the top ends of the limiting grooves (14) are all in contact with limiting blocks (15), and the limiting blocks (15) are all fixedly installed on the inner wall of the regulator (4).

5. The temperature automatic regulating device for charging a vehicle power battery according to claim 3, characterized in that: The water inlet trough (12) can be symmetrically installed with the water outlet trough (13) as the axis.

6. The temperature automatic regulating device for charging a vehicle power battery according to claim 1, characterized in that: The regulator (4) is provided with a transverse pipe groove and a curved pipe groove inside, and the cross-sectional diameter of both the transverse pipe groove and the curved pipe groove is equal to the cross-sectional diameter of the straight portion of the valve core (11); The maximum distance between the bottom end of the truncated cone portion of the valve core (11) and the bottom end of the transverse pipe groove is greater than the distance between the top end and the bottom end of the truncated cone portion of the valve core (11).

7. The temperature automatic regulating device for charging a vehicle power battery according to claim 4, characterized in that: The maximum distance between the bottom end of the water inlet groove (12) and the bottom end of the limit groove (14) is eighty percent of the distance between the top end and the bottom end of the truncated cone portion of the valve core (11).

8. The temperature automatic regulating device for charging a vehicle power battery according to claim 1, characterized in that: A non-circular block is fixedly mounted on the bottom end of the second connecting rod (6), and a groove of a corresponding shape is provided on the top end of the first connecting rotating rod (5).

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