CN112739159A - Method for optimizing heat dissipation efficiency of film capacitor for new energy automobile inverter - Google Patents
Method for optimizing heat dissipation efficiency of film capacitor for new energy automobile inverter Download PDFInfo
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- CN112739159A CN112739159A CN202011515399.9A CN202011515399A CN112739159A CN 112739159 A CN112739159 A CN 112739159A CN 202011515399 A CN202011515399 A CN 202011515399A CN 112739159 A CN112739159 A CN 112739159A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a method for optimizing the heat dissipation efficiency of a film capacitor for a new energy automobile inverter, wherein the film capacitor is fixedly arranged inside the upper end of a heat dissipation pipe, a temperature-sensing electric control component is arranged outside the lower end of the film capacitor, a heat dissipation fan is arranged at the bottom of the heat dissipation pipe, a heat absorption mechanism is arranged at the upper end of the heat dissipation fan, the surface temperature of the film capacitor is sensed in real time through the temperature-sensing electric control component, when the surface temperature of the film capacitor is overhigh, the circuit of the temperature-sensing electric control component circulates, the heat dissipation fan is started to dissipate heat of the film capacitor, meanwhile, the wind power attached to the heat dissipation fan blows the surface of the heat absorption mechanism to absorb heat of the film capacitor, the heating temperature of the film capacitor is further reduced, the film capacitor is effectively protected, and meanwhile, the automatic temperature sensing capability of the temperature electric control component, thereby greatly saving power consumption.
Description
Technical Field
The invention belongs to the technical field related to capacitor heat dissipation, and particularly relates to a method for optimizing heat dissipation efficiency of a thin film capacitor for an inverter of a new energy automobile.
Background
The film capacitor is a capacitor having a structure in which a metal foil is used as an electrode, and the metal foil is laminated with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends thereof, and then wound into a cylindrical shape. The plastic film is also called a poly (ethyl ester) capacitor (also called a Mylar) capacitor, a polypropylene capacitor (also called a PP capacitor), a polystyrene capacitor (also called a PS capacitor) and a polycarbonate capacitor, respectively, depending on the type of the plastic film. When the thin film capacitor for the inverter of the new energy automobile is used for long-time work or in high-temperature weather, the surface temperature of the thin film capacitor is high, and damage or explosion danger is easy to occur, so that heat dissipation treatment needs to be carried out on the thin film capacitor.
The existing film capacitor heat dissipation technology for the new energy automobile inverter has the following problems: the traditional thin film capacitor heat dissipation mode for the inverter of the new energy automobile mostly adopts an air port direct-exhausting mode, a fan processing mode and a water cooling mode. The air inlet direct-exhausting type structure is simple, but the heat dissipation effect is poor, particularly under the condition of being closed; the fan processing type has higher cost and more power consumption; the water-cooling type body is large, the occupied layout space is large, circulating cooling needs to be carried out by means of other equipment such as a water pump, and the cost is correspondingly large.
Disclosure of Invention
The invention aims to provide a method for optimizing the heat dissipation efficiency of a film capacitor for an inverter of a new energy automobile, so as to solve the problems of poor heat dissipation effect, high cost and large size in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for optimizing the heat dissipation efficiency of a film capacitor for an inverter of a new energy automobile comprises the following steps:
s1, monitoring the temperature change of the film capacitor by the temperature sensing electric control assembly, sensing the temperature of the film capacitor in real time by the temperature sensing electric control assembly, gradually heating and deforming the movable conducting ring on the temperature sensing electric control assembly along with the temperature rise of the film capacitor to be expanded outwards, and attaching the expanded movable conducting ring on the temperature sensing electric control assembly to the fixed conducting ring after the temperature of the film capacitor is increased to a set value, so that a controller circuit for controlling a driving motor is circulated, and a cooling fan is controlled to start working;
s2, cooling the film capacitor by the cooling fan, driving the motor to rotate under the control of the control instruction after the circuit of the controller circulates, generating air flow by the blades on the fan head, and discharging part of heat emitted by the film capacitor out of the hot air duct along the spiral air duct;
s3, in the S process, the heat absorption sticking block is also floated upwards under the action of the airflow so as to be attached to the lower end face of the film capacitor, the surface temperature of the film capacitor is absorbed by the heat absorption sticking block, and the temperature of the film capacitor is further reduced;
and S4, the temperature of the film capacitor is reduced, and the movable conducting ring on the temperature sensing electric control assembly is gradually restored to the original state under the influence of the temperature, so that a controller circuit for controlling the driving motor is interrupted, and the heat radiation fan stops working.
Preferably, the film capacitor is fixedly installed inside the upper end of the heat exhaust pipe, the temperature sensing electric control assembly is installed outside the lower end of the film capacitor, the heat radiation fan is installed at the bottom of the heat exhaust pipe, the heat absorption mechanism is arranged at the upper end of the heat radiation fan, the temperature sensing electric control assembly senses the surface temperature of the film capacitor in real time, when the surface temperature of the film capacitor is too high, a circuit of the temperature sensing electric control assembly circulates, the heat radiation fan is started to radiate the film capacitor, and meanwhile, the heat absorption mechanism is blown by wind power of the heat radiation fan to be attached to the surface of the film capacitor to absorb heat, so that the heating temperature of the film capacitor is reduced;
the cooling fan comprises a driving motor and a fan head, the fan head is coaxially connected with the output end of the driving motor, and blades are fixedly connected to the outer wall of the fan head;
the heat absorption mechanism comprises a guide pipe and a heat absorption sticking block, the lower end of the heat absorption sticking block is inserted into the guide pipe in a sliding mode, and the guide pipe is rotationally clamped on the fan head through a bearing;
the temperature sensing electric control assembly comprises a fixed ring frame, a fixed conducting ring and a movable conducting ring, the fixed ring frame is fixedly sleeved on the film capacitor, and the fixed conducting ring and the movable conducting ring are fixed on the fixed ring frame through fixing claw buckles.
Preferably, a plurality of radiating fins are uniformly distributed on the outer wall of the film capacitor, the radiating fins are of an annular structure made of pure copper, and the outer walls of two sides of the film capacitor penetrate through wiring antennae connected with the film capacitor.
Preferably, the inner wall of the upper end of the heat exhaust pipe is provided with a spiral structure, and a spiral air duct is formed between the film capacitor and the heat exhaust pipe through the spiral structure.
Preferably, the heat absorption sticking block is made of a light carbon composite material and is molded, the lower end of the heat absorption sticking block is of a conical structure, and a retraction groove is formed in the upper end face of the heat absorption sticking block.
Preferably, the guide pipe outside the lower end of the heat absorbing patch is filled with lubricating liquid.
Preferably, the fixed conductive ring is a semi-ring structure made of a conductive aluminum material, and the movable conductive ring is a smaller semi-ring structure made of a nickel-titanium memory alloy material.
Preferably, conductive contacts are arranged at the middle positions of the fixed conductive ring and the movable conductive ring, and the two conductive contacts are respectively and electrically connected with the positive end and the negative end of a controller for controlling the driving motor through leads.
Compared with the prior art, the invention provides a method for optimizing the heat dissipation efficiency of a film capacitor for an inverter of a new energy automobile, which has the following beneficial effects:
1. according to the invention, the film capacitor is arranged in the heat exhaust pipe, the temperature sensing electric control assembly is arranged on the film capacitor, the bottom of the heat exhaust pipe is provided with the heat radiation fan and the heat absorption mechanism, the surface temperature of the film capacitor is sensed in real time through the temperature sensing electric control assembly, when the surface temperature of the film capacitor is overhigh, the circuit of the temperature sensing electric control assembly is circulated, the heat radiation fan is started to radiate the film capacitor, and meanwhile, the heat absorption mechanism is blown by wind power of the heat radiation fan to be attached to the surface of the film capacitor to absorb heat, so that the heating temperature of the film capacitor is reduced, and the film capacitor is effectively protected;
2. according to the invention, the plurality of copper radiating fins which are uniformly distributed are arranged on the surface of the film capacitor, the copper radiating fins fully absorb high-temperature heat on the surface of the film capacitor, the spiral air duct is formed between the film capacitor and the heat exhaust pipe, the contact area between the film capacitor and the spiral air duct is increased through the radiating fins, and when the heat radiating fan works, external cooler air gradually moves upwards along the spiral air duct, so that the contact time with hot air in the heat exhaust pipe is prolonged, the heat is better absorbed, and the heat is exhausted from the radiating mesh holes at the top of the heat exhaust pipe;
3. the heat absorption sticking block on the heat absorption mechanism is made of light carbon composite materials and formed to ensure the floating effect of the heat absorption sticking block, can be lifted upwards under the action of airflow in the hot air exhaust pipe, and the lower end of the heat absorption sticking block is in a conical structural design and can diffuse the airflow outwards, so that cold air can fully enter the spiral air duct;
4. according to the invention, the guide pipe outside the lower end of the heat absorption patch is filled with the lubricating liquid, so that the friction force between the heat absorption patch and the guide pipe is reduced, the friction loss is reduced, the floating effect of the heat absorption patch is further improved, and the heat absorption patch is more easily attached to the film capacitor due to the change of air flow;
5. the fixed conducting ring on the temperature-sensing electric control assembly is of a semi-annular structure made of a conducting aluminum material and has good electric conductivity, the movable conducting ring is of a smaller semi-annular structure made of a nickel-titanium memory alloy material, the movable conducting ring is located on the inner side of the fixed conducting ring, the nickel-titanium memory alloy material has excellent temperature sensing capacity, and the movable conducting ring is of a semi-annular structure in a normal temperature state.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
fig. 1 is a schematic structural diagram of a cross section of a thin film capacitor for an inverter of a new energy vehicle according to the present invention;
FIG. 2 is an enlarged cross-sectional view taken along line A of FIG. 1 according to the present invention;
FIG. 3 is a schematic bottom view of the temperature sensing electronic control assembly according to the present invention;
in the figure: 1. a thin film capacitor; 2. a heat sink; 3. a heat exhausting air pipe; 4. a wiring antenna; 5. a blade; 6. a drive motor; 7. a blower head; 8. a bearing; 9. a stationary ring frame; 10. fixing the conducting ring; 11. a movable conducting ring; 12. a guide tube; 13. heat absorbing sticking blocks; 14. a conductive contact; 15. and fixing the paw buckle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a method for optimizing the heat dissipation efficiency of a film capacitor for an inverter of a new energy automobile comprises the following steps:
s1, monitoring the temperature change of the film capacitor 1 by the temperature-sensing electric control component, sensing the temperature of the film capacitor 1 in real time by the temperature-sensing electric control component, gradually deforming and expanding the movable conducting ring 11 on the temperature-sensing electric control component as the temperature of the film capacitor 1 increases to a set value, and attaching the expanded movable conducting ring 11 on the temperature-sensing electric control component to the fixed conducting ring 10 after expanding the movable conducting ring 11 on the temperature-sensing electric control component after the temperature of the film capacitor 1 rises to the set value, so that a controller circuit for controlling the driving motor 6 is circulated, and the cooling fan is controlled;
s2, cooling the film capacitor 1 by a cooling fan, driving a motor 6 to drive a fan head 7 to rotate under the control instruction after the circuit of the controller circulates, generating air flow through blades 5 on the fan head 7, and discharging part of heat emitted by the film capacitor 1 out of a heat exhaust air pipe 3 along a spiral air duct;
s3, in the process of S2, the heat absorption patch 13 is also floated upwards under the action of the airflow, so that the heat absorption patch is attached to the lower end face of the film capacitor 1, the surface temperature of the film capacitor 1 is absorbed by the heat absorption patch 13, and the temperature of the film capacitor 1 is further reduced;
s4, the temperature of the film capacitor 1 decreases, and the movable conductive ring 11 on the temperature-sensing electric control assembly gradually returns to the original state under the influence of the temperature, so as to interrupt the controller circuit for controlling the driving motor 6, and the cooling fan stops working.
A film capacitor for a new energy automobile inverter comprises a film capacitor 1 and a hot air exhaust pipe 3, wherein a temperature sensing electric control assembly is arranged at the lower end of the film capacitor 1, a heat radiation fan and a heat absorption mechanism are arranged at the bottom of the hot air exhaust pipe 3, the surface temperature of the film capacitor 1 is sensed in real time through the temperature sensing electric control assembly, when the surface temperature of the film capacitor 1 is too high, a circuit of the temperature sensing electric control assembly is circulated, the heat radiation fan is started to radiate the film capacitor 1, and meanwhile, the heat absorption mechanism is blown by wind power of the heat radiation fan to be attached to the surface of the film capacitor 1 to absorb heat, so that the heating temperature of the film capacitor 1 is;
the heat dissipation fan comprises a driving motor 6 and a fan head 7, the fan head 7 is coaxially connected with the output end of the driving motor 6, blades 5 are fixedly connected to the outer wall of the fan head 7, ventilation meshes are arranged on the top and the outer wall of the lower end of the heat exhaust air pipe 3, the fan head 7 is driven to rotate at a high speed by the driving force of the driving motor 6, the blades 5 generate air flow, air with low external temperature is introduced into the heat exhaust air pipe 3, and air with high temperature in the heat exhaust air pipe 3 is exhausted;
the heat absorption mechanism comprises a guide pipe 12 and a heat absorption sticking block 13, the lower end of the heat absorption sticking block 13 is inserted in the guide pipe 12 in a sliding mode, the guide pipe 12 is rotationally clamped on the fan head 7 through a bearing 8, the guide pipe 12 is prevented from rotating along with the rotation of the fan head 7, and the heat absorption sticking block 13 is pushed to float upwards by utilizing wind power generated when the fan head 7 rotates;
in addition, the temperature sensing electric control assembly comprises a fixed ring frame 9, a fixed conducting ring 10 and a movable conducting ring 11, the fixed ring frame 9 is fixedly sleeved on the film capacitor 1, the fixed conducting ring 10 and the movable conducting ring 11 are fixed on the fixed ring frame 9 through fixed claw buckles 15, the fixed ring frame 9 is made of insulating materials, the fixed conducting ring 10 and the movable conducting ring 11 are clamped on the film capacitor 1 through the fixed ring frame 9, and the temperature change of the film capacitor 1 is monitored in real time.
In order to better dissipate and absorb high-temperature heat generated by the film capacitor 1 during operation, a plurality of radiating fins 2 are uniformly distributed on the outer wall of the film capacitor 1, the radiating fins 2 are of an annular structure made of pure copper, the high-temperature heat on the surface of the film capacitor 1 is fully absorbed through the copper radiating fins 2, the contact area between the film capacitor 1 and a spiral air duct is increased, and the outer walls of the two sides of the film capacitor 1 penetrate through wiring antennae 4 connected with the film capacitor 1 and are communicated with a circuit of an internal circuit board of an inverter through the wiring antennae 4.
In order to fully absorb the heat emitted by the surface cooling fins 2 of the film capacitor 1, a spiral structure is arranged on the inner wall of the upper end of the heat exhaust pipe 3, a spiral air duct is formed between the film capacitor 1 and the heat exhaust pipe 3 through the spiral structure, when the heat radiator works, the external cold air gradually moves upwards along the spiral air duct, so that the contact time of the hot air in the heat exhaust pipe 3 is prolonged, the heat is better absorbed, and the heat is exhausted from the heat radiating meshes at the top of the heat exhaust pipe 3.
In order to better laminate film capacitor 1 and cool down and absorb heat film capacitor 1, heat absorption paster 13 adopts light carbon composite material to make the shaping, light material guarantees the unsteady effect of heat absorption paster 13, can upwards rise along with the effect of air current, and the lower extreme of heat absorption paster 13 is the toper structural design, can be with the outside diffusion of air current, thereby make air conditioning fully enter into the spiral duct, set up the groove of receiving and releasing through the up end at heat absorption paster 13, make heat absorption paster 13 can laminate on film capacitor 1 well, keep great area of contact with film capacitor 1, thereby absorb film capacitor 1's partial heat, reduce film capacitor 1's temperature.
In order to improve the floating effect of the heat absorption patch 13, the guide tube 12 outside the lower end of the heat absorption patch 13 is filled with lubricating liquid, so that the friction force between the heat absorption patch 13 and the guide tube 12 is reduced, the friction loss is reduced, and the heat absorption patch 13 is more easily attached to the film capacitor 1 by the change of air flow.
In order to realize the automatic sensing of the temperature change of the film capacitor 1, the fixed conducting ring 10 is a semi-ring structure made of conducting aluminum material, the fixed conducting ring 10 is a fixed structure and has good electrical conductivity, the movable conducting ring 11 is a smaller semi-ring structure made of nickel-titanium memory alloy material, the movable conducting ring 11 is located at the inner side of the fixed conducting ring 10, the nickel-titanium memory alloy material has excellent temperature sensing capability, the movable conducting ring 11 is in a semi-ring structure at normal temperature, when the temperature rises, the movable conducting ring 11 is clamped by the fixed claw buckle 15 so that the two ends of the movable conducting ring are gradually unfolded outwards, and when the temperature rises to a critical value, the movable conducting ring 11 is unfolded to be attached to the fixed conducting ring 10.
In order to automatically start the heat dissipation fan when the temperature of the film capacitor 1 is too high, the conductive contacts 14 are arranged at the middle positions of the fixed conductive ring 10 and the movable conductive ring 11, the two conductive contacts 14 are respectively electrically connected with the positive end and the negative end of a controller used for controlling the driving motor 6 through wires, when the temperature of the film capacitor 1 is too high, the movable conductive ring 11 is unfolded to be attached to the fixed conductive ring 10 to enable a control circuit of the controller to circulate, so that the heat dissipation fan is controlled to work, and the film capacitor 1 is cooled and dissipated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for optimizing the heat dissipation efficiency of a film capacitor for an inverter of a new energy automobile is characterized by comprising the following steps:
s1, the temperature change of the film capacitor (1) is monitored by the temperature sensing electric control component, the temperature of the film capacitor (1) is sensed in real time through the temperature sensing electric control component, the movable conducting ring (11) on the temperature sensing electric control component gradually deforms due to heating and stretches outwards as the temperature of the film capacitor (1) rises to a set value, and after the temperature of the film capacitor (1) rises to the set value, the movable conducting ring (11) on the temperature sensing electric control component stretches and then is attached to the fixed conducting ring (10), so that a controller circuit for controlling the driving motor (6) circulates, and the cooling fan is controlled to start working;
s2, cooling the film capacitor (1) by a cooling fan, wherein after the circuit of the controller circulates, the driving motor (6) is subjected to a control instruction to drive the fan head (7) to rotate, and airflow is generated by the blades (5) on the fan head (7) to discharge part of heat emitted by the film capacitor (1) out of the hot air exhaust pipe (3) along the spiral air duct;
s3, in the process of S2, the heat absorption patch (13) is also floated upwards under the action of the airflow, so that the heat absorption patch is attached to the lower end face of the film capacitor (1), the surface temperature of the film capacitor (1) is absorbed by the heat absorption patch (13), and the temperature of the film capacitor (1) is further reduced;
s4, the temperature of the film capacitor (1) is reduced, and the movable conducting ring (11) on the temperature sensing electric control assembly is gradually restored to the original state under the influence of the temperature, so that the circuit of the controller for controlling the driving motor (6) is interrupted, and the heat radiation fan stops working.
2. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 1, wherein the method comprises the following steps: the film capacitor (1) is fixedly installed inside the upper end of the heat exhaust pipe (3), the temperature sensing electric control assembly is installed outside the lower end of the film capacitor (1), the heat radiation fan is installed at the bottom of the heat exhaust pipe (3), the heat absorption mechanism is arranged at the upper end of the heat radiation fan, the temperature sensing electric control assembly senses the surface temperature of the film capacitor (1) in real time, when the surface temperature of the film capacitor (1) is too high, a circuit of the temperature sensing electric control assembly circulates, the heat radiation fan is started to radiate the film capacitor (1), and meanwhile, the heat absorption mechanism is blown by wind power of the heat radiation fan to adhere to the surface of the film capacitor (1) to absorb heat, so that the heating temperature of the film capacitor (1) is reduced;
the cooling fan comprises a driving motor (6) and a fan head (7), the fan head (7) is coaxially connected with the output end of the driving motor (6), and the outer wall of the fan head (7) is fixedly connected with a blade (5);
the heat absorption mechanism comprises a guide pipe (12) and a heat absorption sticking block (13), the lower end of the heat absorption sticking block (13) is inserted into the guide pipe (12) in a sliding mode, and the guide pipe (12) is rotationally clamped on the fan head (7) through a bearing (8);
the temperature-sensing electric control assembly comprises a fixed ring frame (9), a fixed conducting ring (10) and a movable conducting ring (11), wherein the fixed ring frame (9) is fixedly sleeved on the film capacitor (1), and the fixed conducting ring (10) and the movable conducting ring (11) are fixed on the fixed ring frame (9) through a fixed claw buckle (15).
3. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: a plurality of radiating fins (2) are uniformly distributed on the outer wall of the film capacitor (1), the radiating fins (2) are of an annular structure made of pure copper, and wiring antennae (4) connected with the film capacitor (1) penetrate through the outer walls of the two sides of the film capacitor (1).
4. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: the inner wall of the upper end of the heat exhaust pipe (3) is provided with a spiral structure, and a spiral air duct is formed between the film capacitor (1) and the heat exhaust pipe (3) through the spiral structure.
5. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: the heat absorption sticking block (13) is made of a light carbon composite material and is molded, the lower end of the heat absorption sticking block (13) is of a conical structure, and a retraction groove is formed in the upper end face of the heat absorption sticking block (13).
6. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: and lubricating liquid is filled in the guide pipe (12) outside the lower end of the heat absorption sticking block (13).
7. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: the fixed conducting ring (10) is a semi-ring structure made of conducting aluminum materials, and the movable conducting ring (11) is a smaller semi-ring structure made of nickel-titanium memory alloy materials.
8. The method for optimizing the heat dissipation efficiency of the film capacitor for the inverter of the new energy automobile according to claim 2, wherein the method comprises the following steps: conductive contacts (14) are arranged at the middle positions of the fixed conductive ring (10) and the movable conductive ring (11), and the two conductive contacts (14) are respectively and electrically connected with the positive end and the negative end of a controller for controlling the driving motor (6) through wires.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114093667A (en) * | 2021-10-22 | 2022-02-25 | 扬州日精电子有限公司 | Water-cooled series resonance capacitor |
| CN114649144A (en) * | 2022-04-01 | 2022-06-21 | 江苏建威电子科技有限公司 | Capacitor fixing structure of automobile generator rectifier |
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| WO2019208117A1 (en) * | 2018-04-25 | 2019-10-31 | 東芝キヤリア株式会社 | Motor driving device and refrigeration cycle device |
| CN211529799U (en) * | 2020-04-10 | 2020-09-18 | 兰州交通大学 | High-heat-conduction metallized film capacitor |
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| US20100128410A1 (en) * | 2008-11-24 | 2010-05-27 | Kia Motors Corporaion | Film capacitor |
| WO2019208117A1 (en) * | 2018-04-25 | 2019-10-31 | 東芝キヤリア株式会社 | Motor driving device and refrigeration cycle device |
| CN108735509A (en) * | 2018-05-14 | 2018-11-02 | 无锡宸瑞新能源科技有限公司 | A kind of high heat dissipation thin film capacitor for electric vehicle |
| CN211529799U (en) * | 2020-04-10 | 2020-09-18 | 兰州交通大学 | High-heat-conduction metallized film capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114093667A (en) * | 2021-10-22 | 2022-02-25 | 扬州日精电子有限公司 | Water-cooled series resonance capacitor |
| CN114093667B (en) * | 2021-10-22 | 2023-02-10 | 扬州日精电子有限公司 | Water-cooled series resonance capacitor |
| CN114649144A (en) * | 2022-04-01 | 2022-06-21 | 江苏建威电子科技有限公司 | Capacitor fixing structure of automobile generator rectifier |
| CN114649144B (en) * | 2022-04-01 | 2022-10-21 | 江苏建威电子科技有限公司 | Capacitor fixing structure of automobile generator rectifier |
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| CN112739159B (en) | 2022-10-21 |
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