A heat-resistant automotive capacitor

Abstract

The invention relates to the technical field of capacitors, and in particular to a heat-resistant automobile capacitor, comprising a plurality of capacitor bodies, a mounting support plate for mounting the capacitor bodies, and an outer shell for mounting the mounting support plate, wherein the outer shell is provided with a mounting cavity and a coolant storage cavity, wherein the mounting cavity is located inside the coolant storage cavity, and the coolant storage cavity is filled with a certain amount of coolant, and the outer shell is further provided with a plurality of heat-conducting rods, wherein one end of the heat-conducting rod is inserted into the coolant storage cavity, and the other end of the heat-conducting rod is connected to an external heat sink; the external heat sink is fixedly mounted on a ventilation pipe, which is mounted on a chassis of an automobile, and vents are arranged at both ends of the ventilation pipe. The technical solution absorbs heat in the mounting cavity through the coolant in the coolant storage cavity, wherein the external heat sink and the outer shell are located at different positions of the automobile and are connected through the heat-conducting rod, thereby ensuring the balancing effect of the automobile counterweight and effectively cooling the capacitor body located in the trunk.

Description

Technical Field

[0001] The invention relates to the technical field of capacitors, and in particular to a heat-resistant automotive capacitor. Background Art

[0002] With the development of technology, the use of new energy vehicles is becoming more and more popular. New energy vehicles rely on electricity instead of gasoline. The biggest technical challenge of new energy vehicles is endurance, and the demand for large-capacity batteries is increasing. Capacitors are a new type of energy storage device. They are electrochemical components that store energy through polarized electrolytes. In order to balance the weight distribution of the vehicle, existing capacitors are usually installed in the engine compartment, the bottom of the vehicle or the bottom of the trunk of the car. Since the capacitor itself has poor heat resistance and the capacitor at the bottom of the trunk cannot contact the airflow during the driving process of the car to dissipate heat, the battery at the bottom of the trunk of the car will cause the capacitor to overheat and burn out after long-term use, which poses certain safety hazards. Summary of the invention

[0003] In view of the above problems, it is necessary to provide a heat-resistant automotive capacitor to address the problems of the prior art.

[0004] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0005] A heat-resistant automobile capacitor comprises a plurality of capacitor bodies, a mounting support plate for mounting the capacitor bodies, and an outer shell for mounting the mounting support plate. The outer shell is formed by splicing two separate shells. An installation cavity and a coolant storage cavity are arranged in the outer shell. The installation cavity is located inside the coolant storage cavity. The mounting support plate is installed in the installation cavity. The coolant storage cavity is filled with a certain amount of coolant. A connecting hole for the circulation of coolant is arranged between the coolant storage cavities of the two shells. A plurality of heat-conducting rods are also arranged on the outer shell. One end of the heat-conducting rod is inserted into the coolant storage cavity, and the other end of the heat-conducting rod is connected to an external heat sink. The external heat sink is fixedly mounted on a ventilation pipe, which is mounted on a chassis of an automobile. Ventilation ports are arranged at both ends of the ventilation pipe. When the automobile moves, airflow enters the ventilation pipe from the ventilation port at one end to reduce the heat on the surface of the external heat sink. Temperature, a plurality of heat fins are arranged on one side of the external heat dissipation block located in the ventilation duct; a connecting assembly for connecting a heat-conducting rod is arranged on the external heat dissipation block; a connecting head is coaxially arranged at one end of the heat-conducting rod away from the coolant storage chamber, and a guide hole extending radially along the heat-conducting rod and passing through the connecting head is arranged on the connecting head; the connecting assembly includes two quick-release blocks, and horizontal plug rods are coaxially arranged on the opposite sides of the two quick-release blocks, the diameter of the plug rod is the same as the inner diameter of the guide hole, the plug rods of the two quick-release blocks are inserted in the guide holes of the connecting head, and the two quick-release blocks are fixedly connected by bolts and nuts; the external heat dissipation block also includes a first slider, the spliced ​​quick-release blocks are installed on the first slider, the first slider is slidably installed on the upper side of the external heat dissipation block, the bottom of the first slider is in contact with the upper surface of the external heat dissipation block, and the moving path of the first slider is perpendicular to the axis of the plug rod and is horizontally arranged.

[0006] Preferably, the length of a single plug rod is greater than the radius of the connector, and the external heat dissipation block, the quick-release block, the plug rod and the first sliding block are all made of heat-conducting metal material.

[0007] Preferably, a mounting port is provided at the top of the ventilation duct, the external heat dissipation block is installed at the mounting port, a limiting strip extending horizontally along the length direction of the ventilation duct is provided at the top of the external heat dissipation block, a sliding groove with the same cross-sectional shape and size as the limiting strip is provided at the bottom of the first slider, and the first slider is slidably installed on the limiting strip of the external heat dissipation block through the sliding groove.

[0008] Preferably, the length of the limit strip is the same as that of the installation opening, a limit frame is arranged around the installation opening of the ventilation pipe, both ends of the limit strip fit the inner wall of the limit frame, and the length of the limit strip is greater than the length of the first slider.

[0009] Preferably, a plug-in plate extending vertically upward is provided on the first sliding block, a fitting block is provided on the side opposite to the quick-release block, the fitting block is provided with an inserting slot, and the plug-in plate is inserted in the inserting slot of the fitting block; a first through hole is provided on the plug-in plate, and a second through hole is provided on the fitting block, the first through hole and the second through hole have the same diameter and are located on the same straight line, and bolts are inserted in the first through hole and the second through hole to fix the quick-release block and the first sliding block.

[0010] Preferably, the ventilation pipe is provided with a mounting plate for connecting to the chassis of the automobile at the ventilation opening, and a shock-absorbing filter plate is provided between the ventilation opening and the mounting plate.

[0011] Preferably, a second filter screen is arranged in the ventilation openings at both ends of the ventilation pipe, and inclined guide plates are arranged on the mounting plates at both ends of the ventilation pipe.

[0012] Preferably, the outer shell is provided with a plurality of heat dissipation pipes connecting the installation cavity and the outside of the outer shell, the heat dissipation pipes pass through the coolant storage cavity, and a first filter is provided at one end of the heat dissipation pipe located outside the outer shell.

[0013] Preferably, the liquid inlet of the coolant storage chamber is sealed by a sealing plug.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, the outer shell in the present invention is formed by splicing two shells, and the mounting support plate for mounting the capacitor body can be placed in the mounting cavity inside the outer shell formed by the splicing. The outer shell is also provided with a coolant storage cavity, and the coolant storage cavity completely covers the outside of the mounting cavity. The staff can inject a certain amount of coolant into the coolant storage cavity through the liquid inlet at one end of the outer shell, so that the coolant completely covers the outside of the mounting cavity. The coolant in the coolant storage cavity absorbs the heat in the mounting cavity, thereby reducing the temperature of the capacitor body in the trunk area where no airflow enters.

[0016] Secondly, the coolant storage cavity of the outer shell in the present invention is connected to and transfers heat with the connecting assembly on the external heat sink through a heat-conducting rod. The external heat sink is installed in the ventilation duct, and the ventilation duct is installed at any position on the chassis of the car. The vents at both ends of the ventilation duct are at the bottom of the chassis of the car. When the car is driving, the airflow enters the ventilation duct through the vent at one end of the ventilation duct, and the high-speed airflow drives the external heat sink to dissipate heat. The external heat sink and the outer shell are at different positions of the car, which not only ensures the balancing effect of the car's counterweight, but also effectively cools the capacitor body located in the trunk, ensuring that the capacitor body located in the trunk can work for a long time.

[0017] Thirdly, the connection position between the connection assembly and the heat-conducting rod in the present invention can be moved in the horizontal direction, and the ventilation pipe installed on the chassis of the car can filter the vibration in the vertical direction through the shock-absorbing filter plate, thereby avoiding the vibration during the driving of the car to damage the connection between the heat-conducting rod and the external heat sink, thereby protecting the heat transfer path. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of a heat-resistant automotive capacitor;

[0019] Figure 2 It is a side view of a heat-resistant automotive capacitor;

[0020] Figure 3 yes Figure 2 Cross-sectional view at AA of FIG.

[0021] Figure 4 yes Figure 2 A three-dimensional cross-sectional view at AA;

[0022] Figure 5 yes Figure 4 A partial enlarged view of point B;

[0023] Figure 6 yes Figure 4 A partial enlarged view of point C;

[0024] Figure 7 It is a front view of a heat-resistant automotive capacitor;

[0025] Figure 8 yes Figure 7 Cross-sectional view at DD of FIG.

[0026] Fig. 9 It is a three-dimensional structure exploded diagram of a heat-resistant automotive capacitor;

[0027] Fig.10 yes Fig. 9 A partial enlarged view of point E.

[0028] The numbers in the figure are: 1, capacitor body; 11, mounting support plate; 2, outer shell; 21, mounting cavity; 211, heat dissipation pipe; 212, first filter screen; 22, coolant storage cavity; 221, liquid inlet; 222, heat conducting rod; 223, connector; 224, guide hole; 225, sealing plug; 23, connecting hole; 3, external heat dissipation block; 31, ventilation pipe; 311, ventilation port; 312, mounting port; 313. Limiting frame; 314. Mounting plate; 315. Shock-absorbing filter plate; 316. Second filter screen; 317. Guide plate; 32. Heat sink fins; 33. Connecting assembly; 331. Quick-release block; 332. Insert rod; 333. First slider; 334. Slide groove; 335. Insertion plate; 336. Fitting block; 337. Insertion groove; 338. First through hole; 339. Second through hole; 34. Limiting strip. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference Figures 1 to 10 :

[0031] A heat-resistant automotive capacitor includes a plurality of capacitor bodies 1 and a mounting support plate 11 (such as Figure 4As shown), and an outer shell 2 for installing the mounting support plate 11, the outer shell 2 is formed by splicing two split shells, and an installation cavity 21 and a coolant storage cavity 22 are provided in the outer shell 2, the installation cavity 21 is located inside the coolant storage cavity 22, the mounting support plate 11 is installed in the installation cavity 21, the coolant storage cavity 22 is filled with a certain amount of coolant, and a connecting hole 23 for the circulation of coolant is provided between the coolant storage cavities 22 of the two shells; a plurality of heat-conducting rods 222 are also provided on the outer shell 2, one end of the heat-conducting rod 222 is inserted in the coolant storage cavity 22, and the other end of the heat-conducting rod 222 is connected to the external heat dissipation block 3; the external heat dissipation block 3 is fixedly installed on the ventilation pipe 31, the ventilation pipe 31 is installed on the chassis of the car, and vents 311 are provided at both ends of the ventilation pipe 31. When the car moves, the airflow enters the ventilation pipe 31 from the vent 311 at one end to reduce the surface temperature of the external heat dissipation block 3, and a plurality of heat dissipation fins 32 are provided on one side of the external heat dissipation block 3 located in the ventilation pipe 31 The outer heat dissipation block 3 is provided with a connection assembly 33 for connecting the heat-conducting rod 222; a connector 223 is coaxially provided at one end of the heat-conducting rod 222 away from the coolant storage chamber 22, and a guide hole 224 extending radially along the heat-conducting rod 222 and passing through the connector 223 is provided on the connector 223; the connection assembly 33 includes two quick-release blocks 331, and a horizontal plug rod 332 is coaxially provided on the opposite side of the two quick-release blocks 331, and the diameter of the plug rod 332 is the same as the inner diameter of the guide hole 224 Similarly, the insertion rods 332 of the two quick-release blocks 331 are inserted into the guide holes 224 of the connecting head 223, and the two quick-release blocks 331 are fixedly connected by bolts and nuts; the external heat dissipation block 3 also includes a first slider 333, and the spliced ​​quick-release blocks 331 are installed on the first slider 333, and the first slider 333 is slidably installed on the upper side of the external heat dissipation block 3, and the bottom of the first slider 333 is in contact with the upper surface of the external heat dissipation block 3, and the moving path of the first slider 333 is perpendicular to the axis of the insertion rod 332 and is horizontally arranged.

[0032] The capacitor in the present application includes a plurality of capacitor bodies 1, which are mounted on a mounting support plate 11 and mounted in a mounting cavity 21 inside an outer shell 2 through the mounting support plate 11. The outer shell 2 is formed by splicing two shells, so the mounting support plate 11 can be mounted in the mounting cavity 21 inside the outer shell 2 formed by splicing. The outer shell 2 is also provided with a coolant storage cavity 22. When the two shells are spliced ​​to form the outer shell 2, the coolant storage cavities 22 of the two shells are connected through a plurality of connecting holes 23, so that the staff can pass through the liquid inlet 2 at one end of the outer shell 2. 21 injects a certain amount of coolant into the coolant storage chamber 22 so that the coolant completely covers the outside of the installation chamber 21. After the outer shell 2 completes the installation of the capacitor body 1, the staff installs the outer shell 2 at the bottom of the trunk of the car. When the capacitor body 1 generates heat during operation, the coolant in the coolant storage chamber 22 absorbs the heat in the installation chamber 21, lowering the temperature of the installation chamber 21. The temperature of the coolant in the coolant storage chamber 22 rises, and one end of the heat-conducting rod 222 on the outer shell 2 is inserted into the coolant storage chamber 22 and contacts the coolant. The heat-conducting rod 22 2 conducts the heat of the coolant to the external heat sink 3. In this embodiment, the external heat sink 3 is installed in the ventilation pipe 31. The ventilation pipe 31 can be installed at any position on the chassis of the car. The vents 311 at both ends of the ventilation pipe 31 are at the bottom of the chassis of the car. When the car is driving, the airflow enters the ventilation pipe 31 through the vents 311 at one end of the ventilation pipe 31. The high-speed airflow drives the external heat sink 3 to dissipate heat, thereby reducing the heat of the heat-conducting rod 222 connected to the external heat sink 3, and then reducing the heat of the coolant in the coolant storage chamber 22, and maintaining The cooling effect of the coolant on the installation cavity 21, thereby ensuring the heat of the capacitor body 1 in the installation cavity 21, so that the capacitor body 1 can work at a suitable temperature. In this embodiment, the external heat sink 3 is located in the ventilation pipe 31. A plurality of heat sink fins 32 are arranged on one side. The heat sink fins 32 increase the surface area of ​​the external heat sink 3. The heat sink fins 32 can extend along the length direction of the ventilation pipe 31 and are arranged at equal intervals along the width direction of the ventilation pipe 31. Therefore, the airflow in the ventilation pipe 31 can pass between two adjacent heat sink fins 32, thereby improving the heat dissipation efficiency of the external heat sink 3. In this embodiment, the external heat sink 3 and the outer shell 2 are located at different positions of the car. The coolant storage cavity 22 of the outer shell 2 is connected to the external heat sink 3 through the heat conducting rod 222 and heat transfers. The heat conducting rod 222 can be of any shape and bent, so as to connect the external heat sink 3 and the outer shell 2 at different positions, which not only ensures the balancing effect of the capacitor body 1 and the outer shell 2 on the counterweight of the car, but also effectively cools the capacitor body 1 located in the trunk, ensuring that the capacitor body 1 located in the trunk can work for a long time.The connection assembly 33 in this embodiment includes two quick-release blocks 331 for connecting with the heat-conducting rod 222. The number of the plug rods 332 provided on the quick-release blocks 331 is the same as that of the heat-conducting rods 222 of the outer shell 2. The heat-conducting rod 222 is coaxially provided with a connector 223 at one end close to the outer heat dissipation block 3. Each connector 223 is provided with a guide hole 224. During installation, the staff inserts the plug rods 332 on the two quick-release blocks 331 into the guide holes 224 of the connector 223, and then the two quick-release blocks 331 are connected. Align and press the two quick-release blocks 331 on the first slider 333 with bolts and nuts. The bottom of the first slider 333 is in contact with the external heat dissipation block 3, so that the heat of the heat-conducting rod 222 can be transferred to the plug 332 through the connecting head 223, and then transferred to the quick-release block 331, the first slider 333 and the external heat dissipation block 3 through the plug 332, so as to achieve heat dissipation of the capacitor body 1. In this embodiment, the quick-release block 331 and the connecting head 223 of the outer shell 2 are connected in a quick manner, which is convenient for staff to operate.

[0033] In order to solve the problem that the connection part between the connection assembly 33 and the heat conducting rod 222 is not broken due to vibration during driving, thereby affecting the heat transfer path, the following features are specifically set:

[0034] The length of a single plug rod 332 is greater than the radius of the connector 223 . The external heat dissipation block 3 , the quick-release block 331 , the plug rod 332 and the first slider 333 are all made of heat-conducting metal material.

[0035] The quick-release block 331 in this embodiment is inserted into the guide hole 224 of the connecting head 223 through the insertion rod 332. Since the length of a single insertion rod 332 is greater than the radius of the connecting head 223, when the quick-release blocks 331 are spliced ​​together, the connecting head 223 can move horizontally within a certain range along the insertion rod 332. The quick-release block 331 is installed on the first slider 333, and the first slider 333 is slidably installed on the surface of the external heat dissipation block 3. The moving direction of the first slider 333 is perpendicular to the axis of the insertion rod 332. Therefore, when the heat-conducting rod 222 is connected to the external heat dissipation block 3, the connecting assembly 33 can make the connection between the external heat dissipation block 3 and the heat-conducting rod 222 move within a certain range in the horizontal direction, and the vibration generated during the driving of the car is damped to a certain extent, thereby avoiding the vibration from damaging the connection position between the outer shell 2 and the external heat dissipation block 3 and affecting the heat dissipation conduction path. In this embodiment, the outer heat sink 3, the quick release block 331, the plug rod 332 and the first slider 333 are all made of heat-conducting metal materials, so that heat can be conducted when the connector 223 is on the plug rod 332 and the first slider 333 is moved to any position on the outer heat sink 3. In this embodiment, a spring can be provided between the connector 223 and the quick release block 331 to elastically connect the connector 223 and the quick release block 331, and the connector 223 is reset by the spring after the movement, so as to further reduce the influence of the vibration during the driving of the car on the connection between the outer shell 2 and the outer heat sink 3.

[0036] In order to solve the problem of how to ensure the contact area of ​​the first slider 333 on the upper surface of the outer heat dissipation block 3 and ensure the stability of the sliding path between the first slider 333 and the outer heat dissipation block 3, the following features are specifically set:

[0037] A mounting opening 312 is provided at the top of the ventilation pipe 31, and the external heat dissipation block 3 is installed at the mounting opening 312. A limiting strip 34 extending horizontally along the length direction of the ventilation pipe 31 is provided at the top of the external heat dissipation block 3. A sliding groove 334 having the same cross-sectional shape and size as the limiting strip 34 is provided at the bottom of the first slider 333. The first slider 333 is slidably installed on the limiting strip 34 of the external heat dissipation block 3 through the sliding groove 334.

[0038] The length of the limit strip 34 is the same as that of the installation opening 312 . A limit frame 313 is arranged around the installation opening 312 of the ventilation pipe 31 . Both ends of the limit strip 34 fit the inner wall of the limit frame 313 . The length of the limit strip 34 is greater than that of the first slider 333 .

[0039] In this embodiment, a limiting strip 34 is provided on the upper surface of the outer heat dissipation block 3, and the limiting strip 34 is exposed above the mounting opening 312 of the ventilation pipe 31, so that the first slider 333 can be slidably mounted on the limiting strip 34 through the slide groove 334 at its bottom. By setting the shape of the limiting strip 34 and the slide groove 334, it can be ensured that the bottom of the first slider 333 is always in contact with the surface of the outer heat dissipation block 3. The length of the limiting strip 34 is greater than the length of the first slider 333, so the first slider 333 can move within a certain range along the limiting strip 34, and the limiting strip 34 is located at the mounting opening 312. In the limit frame 313 at 312, the two ends of the limit strip 34 are in contact with the inner wall of the limit frame 313, thereby limiting the movement range of the first slider 333, so that the first slider 333 will not separate from the limit strip 34 when moving on the limit strip 34. In this embodiment, springs can also be set on both sides of the first slider 333, and one end of the first slider 333 is elastically connected to the inner wall of the limit frame 313 through the spring. The spring can reset the first slider 333 after moving, further reducing the impact of vibration during the driving of the car on the connection between the outer shell 2 and the external heat sink 3.

[0040] In order to solve the problem of how to quickly install the quick-release block 331 on the first sliding block 333, the following features are specifically set:

[0041] The first sliding block 333 is provided with an insertion plate 335 extending vertically upward, and a fitting block 336 is provided on the side opposite to the quick-release block 331. The fitting block 336 is provided with an insertion slot 337 (such as Figure 8 As shown in the figure, the insertion plate 335 is inserted into the insertion groove 337 of the fitting block 336; the insertion plate 335 is provided with a first through hole 338, and the fitting block 336 is provided with a second through hole 339. The first through hole 338 and the second through hole 339 have the same diameter and are located on the same straight line. Bolts are inserted into the first through hole 338 and the second through hole 339 to fix the quick-release block 331 and the first slider 333.

[0042] When the quick-release blocks 331 in this embodiment are spliced, the fitting blocks 336 on the two quick-release blocks 331 can be spliced ​​together, and corresponding card slots and card blocks can be set on the fitting blocks 336. After the fitting blocks 336 are spliced ​​together, the second through holes 339 on the fitting blocks 336 are on the same straight line, and the staff can align the insertion slots 337 on the fitting blocks 336 with the insertion plates 335 on the first slider 333 for insertion, and the insertion plates 335 are inserted into the insertion slots 337 of the fitting blocks 336 to keep the insertion plates 335 The first through hole 338 on the bonding block 336 is in the same straight line with the second through hole 339 on the bonding block 336, and then the bolt is passed through the second through hole 339 and the first through hole 338 to connect with the nut at the other end to complete the connection between the quick release block 331 and the first slider 333. The insertion groove 337 on the bonding block 336 and the insertion plate 335 on the first slider 333 in this embodiment increase the contact area between the quick release block 331 and the first slider 333, which is more conducive to the heat on the quick release block 331 to be transferred to the first slider 333.

[0043] In order to solve the problem of how to reduce the influence of the vertical vibration generated during the driving of the car on the connection between the external heat sink block 3 and the outer shell 2, the following features are specifically set:

[0044] The ventilation pipe 31 is provided with a mounting plate 314 (such as Figure 6 As shown in FIG. 31 ), a shock-absorbing filter plate 315 is provided between the vent 311 and the mounting plate 314.

[0045] In this embodiment, mounting plates 314 and shock-absorbing filter plates 315 are provided at both ends of the ventilation pipe 31. The ventilation pipe 31 is fixedly mounted on the chassis of the automobile through the mounting plate 314. The shock-absorbing filter plate 315 is located between the mounting plate 314 and the ventilation pipe 31. The shock-absorbing filter plate 315 absorbs vibrations in the vertical direction, thereby reducing the vibrations of the external heat dissipation block 3 in the vertical direction, avoiding affecting the connecting component 33 on the external heat dissipation block 3 and the heat-conducting rod 222 connected to the connecting component 33.

[0046] In order to ensure that the airflow can pass through the inside of the ventilation pipe 31 when the car is driving, the following features are specifically set:

[0047] Second filters 316 are disposed in the ventilation openings 311 at both ends of the ventilation pipe 31 , and inclined guide plates 317 are disposed on the mounting plates 314 at both ends of the ventilation pipe 31 .

[0048] In this embodiment, guide plates 317 are arranged on the mounting plates 314 at both ends of the ventilation pipe 31. The guide plates 317 can guide the airflow into the ventilation pipe 31 to dissipate heat to the external heat dissipation block 3. Second filter screens 316 are installed at the vents 311 at both ends of the ventilation pipe 31. The second filter screen 316 filters the air entering the ventilation pipe 31 to prevent solid impurities such as stones from entering the ventilation pipe 31 and damaging the surface of the external heat dissipation block 3.

[0049] In order to avoid the problem of rapid temperature rise caused by the enclosed space in the installation cavity 21, the following features are specifically set:

[0050] The outer shell 2 is provided with a plurality of heat dissipation pipes 211 connecting the installation cavity 21 and the outside of the outer shell 2 . The heat dissipation pipes 211 pass through the coolant storage cavity 22 . A first filter screen 212 is provided at one end of the heat dissipation pipe 211 located outside the outer shell 2 .

[0051] In this embodiment, several heat dissipation pipes 211 on the outer shell 2 connect the installation cavity 21 with the outside of the outer shell 2. The temperature in the installation cavity 21 can be discharged directly to the outside of the installation cavity 21 along with the gas. The connected wires on the capacitor body 1 can also extend to the outside through the heat dissipation pipes 211. The first filter 212 arranged on the heat dissipation pipes 211 can prevent solid impurities such as external dust from entering the installation cavity 21 and causing damage to the capacitor body 1.

[0052] In order to prevent the coolant in the coolant storage chamber 22 from leaking, the following features are specifically provided:

[0053] The liquid inlet 221 of the coolant storage chamber 22 is blocked by a sealing plug 225 .

[0054] In this embodiment, the liquid inlet 221 on the outer shell 2 can be blocked by the sealing plug 225. When the staff injects the coolant, the sealing plug 225 can block the liquid inlet 221 to keep the coolant in the coolant storage chamber 22 and wrap it outside the installation chamber 21. The user can regularly open the liquid inlet 221 to replenish and replace the coolant in the coolant storage chamber 22 during subsequent maintenance of the car.

[0055] Working principle: the capacitor body 1 is installed on the mounting support plate 11 and is installed in the mounting cavity 21 inside the outer shell 2 through the mounting support plate 11. The outer shell 2 is formed by splicing two shells. When the two shells are spliced ​​to form the outer shell 2, the coolant storage chambers 22 of the two shells are connected through a plurality of connecting holes 23. The staff injects a certain amount of coolant into the coolant storage chamber 22 through the liquid inlet 221 at one end of the outer shell 2, so that the coolant completely covers the outside of the mounting cavity 21. After the outer shell 2 completes the installation of the capacitor body 1, the staff installs the outer shell 2 at the bottom of the trunk of the car. When the capacitor body 1 generates heat during operation, the coolant in the coolant storage chamber 22 absorbs the heat in the mounting cavity 21, reduces the temperature of the mounting cavity 21, and cools the outer shell 2. The temperature of the coolant in the cooling liquid storage chamber 22 rises, and one end of the heat-conducting rod 222 on the outer shell 2 is inserted into the cooling liquid storage chamber 22 and contacts the coolant. The heat-conducting rod 222 conducts the heat of the coolant to the external heat sink 3. The external heat sink 3 is installed in the ventilation pipe 31. The ventilation pipe 31 can be installed at any position on the automobile chassis. The vents 311 at both ends of the ventilation pipe 31 are at the bottom of the automobile chassis. When the automobile is driving, the airflow enters the ventilation pipe 31 through the vents 311 at one end of the ventilation pipe 31. The high-speed airflow drives the external heat sink 3 to dissipate heat, thereby reducing the heat of the heat-conducting rod 222 connected to the external heat sink 3, and then reducing the heat of the coolant in the cooling liquid storage chamber 22, and maintaining the cooling effect of the coolant on the installation chamber 21.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heat-resistant automotive capacitor, comprising a plurality of capacitor bodies (1), a mounting support plate (11) for mounting the capacitor bodies (1), and an outer housing (2) for mounting the mounting support plate (11), characterized in that: The outer shell (2) is formed by splicing two separate shells, and a mounting cavity (21) and a coolant storage cavity (22) are provided in the outer shell (2), the mounting cavity (21) is located inside the coolant storage cavity (22), the mounting support plate (11) is mounted in the mounting cavity (21), the coolant storage cavity (22) is filled with a certain amount of coolant, and a connecting hole (23) for the circulation of coolant is provided between the coolant storage cavities (22) of the two shells; A plurality of heat-conducting rods (222) are also provided on the outer shell (2), one end of the heat-conducting rod (222) is inserted into the coolant storage cavity (22), and the other end of the heat-conducting rod (222) is connected to the external heat dissipation block (3); The external heat dissipation block (3) is fixedly mounted on the ventilation pipe (31), the ventilation pipe (31) is mounted on the chassis of the vehicle, and ventilation holes (311) are arranged at both ends of the ventilation pipe (31). When the vehicle moves, airflow enters the ventilation pipe (31) from the ventilation hole (311) at one end, thereby reducing the surface temperature of the external heat dissipation block (3). A plurality of heat dissipation fins (32) are arranged on one side of the external heat dissipation block (3) located in the ventilation pipe (31); A connecting assembly (33) for connecting to a heat-conducting rod (222) is provided on the external heat dissipation block (3); A connector (223) is coaxially arranged at one end of the heat-conducting rod (222) away from the cooling liquid storage chamber (22), and a guide hole (224) is arranged on the connector (223) extending radially along the heat-conducting rod (222) and penetrating the connector (223); The connection assembly (33) comprises two quick-release blocks (331), and a horizontal insertion rod (332) is coaxially arranged on opposite sides of the two quick-release blocks (331), and the diameter of the insertion rod (332) is the same as the inner diameter of the guide hole (224). The insertion rods (332) of the two quick-release blocks (331) are inserted into the guide hole (224) of the connecting head (223), and the two quick-release blocks (331) are fixedly connected by bolts and nuts. The external heat dissipation block (3) further comprises a first slider (333), the spliced ​​quick-release block (331) is mounted on the first slider (333), the first slider (333) is slidably mounted on the upper side of the external heat dissipation block (3), the bottom of the first slider (333) is in contact with the upper surface of the external heat dissipation block (3), and the moving path of the first slider (333) is arranged horizontally perpendicular to the axis of the insertion rod (332).

2. A heat-resistant automotive capacitor according to claim 1, characterized in that: The length of a single insertion rod (332) is greater than the radius of the connector (223); the external heat dissipation block (3), the quick-release block (331), the insertion rod (332) and the first sliding block (333) are all made of heat-conducting metal material.

3. A heat-resistant automotive capacitor according to claim 2, characterized in that: The top of the ventilation pipe (31) is provided with a mounting opening (312), the external heat dissipation block (3) is mounted at the mounting opening (312), the top of the external heat dissipation block (3) is provided with a limit strip (34) extending horizontally along the length direction of the ventilation pipe (31), the bottom of the first sliding block (333) is provided with a slide groove (334) having the same cross-sectional shape and size as the limit strip (34), and the first sliding block (333) is slidably mounted on the limit strip (34) of the external heat dissipation block (3) through the slide groove (334).

4. A heat-resistant automotive capacitor according to claim 3, characterized in that: The length of the limit strip (34) is the same as the length of the installation opening (312); a limit frame (313) is provided on the ventilation pipe (31) around the installation opening (312); two ends of the limit strip (34) fit the inner wall of the limit frame (313); and the length of the limit strip (34) is greater than the length of the first sliding block (333).

5. A heat-resistant automotive capacitor according to claim 4, characterized in that: The first sliding block (333) is provided with an insertion plate (335) extending vertically upwards, and a fitting block (336) is provided on a side opposite to the quick-release block (331). The fitting block (336) is provided with an insertion slot (337), and the insertion plate (335) is inserted into the insertion slot (337) of the fitting block (336); The insertion plate (335) is provided with a first through hole (338), and the fitting block (336) is provided with a second through hole (339). The first through hole (338) and the second through hole (339) have the same diameter and are located on the same straight line. Bolts are inserted into the first through hole (338) and the second through hole (339) to fix the quick-release block (331) and the first sliding block (333).

6. A heat-resistant automotive capacitor according to claim 1, characterized in that: The ventilation pipe (31) is provided with a mounting plate (314) for connecting to the chassis of an automobile at the ventilation opening (311), and a shock-absorbing filter plate (315) is provided between the ventilation opening (311) and the mounting plate (314).

7. A heat-resistant automotive capacitor according to claim 1, characterized in that: Second filter screens (316) are arranged in the ventilation openings (311) at both ends of the ventilation pipe (31), and inclined guide plates (317) are arranged on the mounting plates (314) at both ends of the ventilation pipe (31).

8. The heat-resistant automotive capacitor according to claim 1, characterized in that: The outer shell (2) is provided with a plurality of heat dissipation pipes (211) communicating with the installation cavity (21) and the outside of the outer shell (2); the heat dissipation pipes (211) pass through the coolant storage cavity (22); and a first filter screen (212) is provided at one end of the heat dissipation pipes (211) located outside the outer shell (2).

9. The heat-resistant automotive capacitor according to claim 1, characterized in that: The liquid inlet (221) of the coolant storage chamber (22) is sealed by a sealing plug (225).

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