CN212967425U - Electrolytic capacitor with thermal protection function and circuit system - Google Patents
Electrolytic capacitor with thermal protection function and circuit system Download PDFInfo
- Publication number
- CN212967425U CN212967425U CN202022038813.3U CN202022038813U CN212967425U CN 212967425 U CN212967425 U CN 212967425U CN 202022038813 U CN202022038813 U CN 202022038813U CN 212967425 U CN212967425 U CN 212967425U
- Authority
- CN
- China
- Prior art keywords
- temperature
- capacitor assembly
- protection function
- thermal protection
- foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The utility model discloses an electrolytic capacitor and circuit system with thermal protection function, include: the shell is provided with a containing cavity; the capacitor assembly is arranged in the accommodating cavity; the electrode pin is arranged on the shell, is connected with the capacitor assembly and can be connected with an external circuit; the temperature sensing piece is arranged in the accommodating cavity; and the connecting pin is arranged on the shell, is connected with the temperature sensing part and can be connected with an external circuit. All set up in the appearance chamber of casing through capacitor assembly and temperature-sensing spare for the actual operating temperature that capacitor assembly can be detected to the temperature-sensing spare, makes external circuit can learn capacitor assembly's actual operating temperature according to temperature-sensing spare's voltage or electric current, and then can stop or adjust capacitor assembly's operating condition according to capacitor assembly's actual operating temperature, avoids the electrolyte blowout among the capacitor assembly to lead to unexpected problem, improves the reliability.
Description
Technical Field
The utility model relates to an electrolytic capacitor field, in particular to electrolytic capacitor and circuit system with thermal protection function.
Background
Due to the structural characteristics of the electrolytic capacitor, under the condition of overhigh temperature, if the electrolytic capacitor is easy to crack after long-time work, explosion-proof lines are arranged on the common electrolytic capacitor, so that the influence of the cracking of the electrolytic capacitor is reduced. However, even if the electrolytic capacitor is provided with the explosion-proof lines, the electrolyte in the electrolytic capacitor can be sprayed when the explosion-proof lines are opened, and due to the fact that the temperature of the electrolyte is high, inflammable substances are easy to catch fire or other parts are damaged due to high temperature, and safety risks exist. Therefore, there is also a method of providing a temperature protection circuit on the circuit board, in which the temperature protection circuit detects ambient temperature, and when the ambient temperature exceeds a threshold value, the temperature protection circuit is triggered to stop the circuit from operating, thereby preventing the electrolytic capacitor from being cracked due to over-high temperature.
However, the temperature protection circuit detects the working environment temperature of the electrolytic capacitor, and is not the actual temperature of the electrolytic capacitor, and the difference exists between the two temperatures, so that the situation that the actual temperature of the electrolytic capacitor exceeds the threshold value and the temperature protection circuit is not triggered can occur, and the reliability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electrolytic capacitor and circuit system with thermal protection function, its actual operating temperature that can detect the electric capacity subassembly, and then cooperation external circuit avoids the electric capacity subassembly to last the work under the condition of high temperature.
According to the utility model discloses an electrolytic capacitor with thermal protection function of first aspect embodiment includes: the shell is provided with a containing cavity; the capacitor assembly is arranged in the cavity; the electrode pin is arranged on the shell, is connected with the capacitor assembly and can be connected with an external circuit; the temperature sensing piece is arranged in the accommodating cavity; and the connecting pin is arranged on the shell and connected with the temperature sensing part, and the connecting pin can be connected with an external circuit.
According to the utility model discloses electrolytic capacitor with thermal protection function has following beneficial effect at least: the external circuit passes through electrode pin and capacitor assembly electric connection, so that capacitor assembly normally works, all set up in the appearance chamber of casing through capacitor assembly and temperature-sensing piece, make the temperature-sensing piece can detect capacitor assembly's actual operating temperature, external circuit passes through connecting pin and temperature-sensing piece electric connection, because the voltage or the electric current of temperature-sensing piece are relevant with the temperature, make external circuit can learn capacitor assembly's actual operating temperature according to the voltage or the electric current of temperature-sensing piece, and then can stop or adjust capacitor assembly's operating condition according to capacitor assembly's actual operating temperature, avoid the electrolyte blowout in the capacitor assembly to lead to unexpected problem, reliability is improved.
According to some embodiments of the utility model, the electric capacity subassembly includes positive foil, negative pole foil and electrolytic paper, the electrode pin include with positive electrode pin of positive foil connection and with negative electrode pin of negative pole foil connection, electrolytic paper is located positive foil and between the negative pole foil, positive foil, negative pole foil and the electrolytic paper is convoluteed and is set up in holding the chamber.
According to some embodiments of the invention, the cathode foil and the anode foil are aluminum foils.
According to some embodiments of the utility model, still include the sealing member, the casing is provided with the intercommunication the opening that holds the chamber, the sealing member with the casing is connected with the shutoff the opening, the sealing member is provided with the through-hole that allows the electrode pin and connect the pin and pass.
According to some embodiments of the utility model, still include the sealing member, the casing is provided with the intercommunication the opening that holds the chamber, the sealing member with the casing is connected with the shutoff the opening, the sealing member is provided with the through-hole that allows the electrode pin and connect the pin and pass.
According to some embodiments of the invention, the housing is provided with a constriction, an inner wall surface forming the constriction abutting an outer wall surface of the sealing element.
According to some embodiments of the utility model, the sealing member is the rubber buffer.
According to some embodiments of the invention, the housing is provided with an explosion-proof thread.
According to the utility model discloses second aspect embodiment circuit system includes: the electrolytic capacitor with the thermal protection function and the control driving unit are characterized in that the control driving unit is electrically connected with the temperature sensing piece and the capacitor assembly respectively, and the control driving unit controls the capacitor assembly to work according to the voltage or the current of the temperature sensing piece.
According to the utility model discloses circuit system has following beneficial effect at least: control drive unit can produce and order about signal signaling capacitor assembly work, because the voltage or the electric current of temperature-sensing piece are relevant with the temperature, control drive unit can learn capacitor assembly's actual operating temperature according to temperature-sensing piece's voltage or electric current, thereby when capacitor assembly's actual operating temperature surpassed the threshold value, control drive unit stops or adjusts capacitor assembly work, prevent that capacitor assembly from lasting work under the too high condition of temperature, avoid the electrolyte blowout among the capacitor assembly to cause unexpected problem, the reliability is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of one embodiment of the present invention;
fig. 2 is a schematic diagram of a capacitor assembly according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a circuit system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
As shown in fig. 1, an electrolytic capacitor with thermal protection according to an embodiment of the present invention includes: a housing 100, the housing 100 being provided with a cavity 110; a capacitor assembly 200 disposed in the cavity 110; an electrode pin 300 disposed on the case 100, the electrode pin 300 being connected to the capacitor module 200, the electrode pin 300 being connectable to an external circuit; a temperature sensing member 400 disposed in the cavity 110; and a connection pin 500 disposed on the housing 100, wherein the connection pin 500 is connected to the temperature sensing member, and the connection pin 500 can be connected to an external circuit.
The external circuit is electrically connected with the capacitor assembly 200 through the electrode pin 300, so as to enable the capacitor assembly 200 to normally work, the capacitor assembly 200 and the temperature sensing element 400 are both arranged in the accommodating cavity 110 of the casing 100, so that the temperature sensing element 400 can detect the actual working temperature of the capacitor assembly 200, the external circuit is electrically connected with the temperature sensing element 400 through the connecting pin 500, because the voltage or the current of the temperature sensing element 400 is related to the temperature, so that the external circuit can know the actual working temperature of the capacitor assembly 200 according to the voltage or the current of the temperature sensing element 400, and further can stop or adjust the working state of the capacitor assembly 200 according to the actual working temperature of the capacitor assembly 200, thereby avoiding the damage of the capacitor assembly 200 and improving the reliability.
The temperature sensing member 400 may be a device including a thermistor, a thermocouple, etc. which are commonly used to detect temperature; the temperature sensing member 400 may also be an embodiment including a diode, a transistor, or other devices having a positive temperature coefficient or a negative temperature coefficient, and may change the magnitude of its voltage or current according to a temperature change.
Referring to fig. 2, in some embodiments of the present invention, the capacitor assembly 200 includes a positive foil 210, a negative foil 220, and an electrolytic paper 230, the electrode pin 300 includes a positive pin 310 connected to the positive foil 210 and a negative pin 320 connected to the negative foil 220, the electrolytic paper 230 is located between the positive foil 210 and the negative foil 220, and the positive foil 210, the negative foil 220, and the electrolytic paper 230 are wound and disposed in the cavity 110.
The electrolytic paper 230 is sandwiched between the positive foil 210 and the negative foil 220 and wound to form the capacitor assembly 200, and the capacitor assembly is arranged in the accommodating cavity 110, and the relative area of the positive foil 210 and the negative foil 220 can be increased due to the winding structure, so that the capacitor capacity can be increased. The electrolytic paper 230 is a paper object soaked with an electrolyte.
In some embodiments of the present invention, the positive foil 210 and the negative foil 220 are aluminum foils. The aluminum foil has the advantages of low cost and light weight.
Referring to fig. 1, in some embodiments of the present invention, the sealing member 600 is further included, the housing 100 is provided with an opening communicating with the accommodating chamber 110, the capacitor module 200 and the temperature sensing member 400 can extend into the accommodating chamber 110 through the opening, the sealing member 600 is connected to the housing 100 to seal the opening, and the sealing member 600 is provided with a through hole allowing the electrode pin 300 and the connection pin 500 to pass through.
After the capacitor assembly 200 and the temperature sensing part 400 are arranged in the accommodating cavity 110, the opening of the accommodating cavity 110 is sealed by the sealing part 600, so that the accommodating cavity 110 is sealed, the capacitor assembly 200 and the temperature sensing part 400 can work more stably, and the electrolyte on the electrolytic paper 230 is prevented from flowing out or evaporating. In addition, the electrode pin 300 and the connection pin 500 protrude through the through hole of the sealing member 600, that is, the electrode pin 300 and the connection pin 500 are located on the same side of the housing 100, so as to facilitate connection with an external circuit.
In some embodiments of the present invention, the wall of the sealing member 600 forming the through hole is provided with an elastic portion, and the elastic portion abuts against the outer side wall of the electrode pin 300 and the connection pin 500.
When the electrode pin 300 and the connection pin 500 pass through the through hole of the sealing member 600, the wall surface forming the elastic portion can be abutted against the outer side wall surfaces of the electrode pin 300 and the connection pin 500 due to the elastic portion provided in the through hole, which is beneficial to further improving the sealing degree of the cavity 110. The sealing member 600 may be made of an elastic material or an elastic ring may be provided at the through hole to form an elastic portion.
Referring to fig. 1, in some embodiments of the present invention, the housing 100 is provided with a narrowed portion 120, and an inner wall surface forming the narrowed portion 120 abuts against an outer wall surface of the sealing member 600.
The inner wall surface of the narrowing portion 120 formed on the casing 100 is abutted to the outer wall surface of the sealing element 600, so that the casing 100 is connected with the sealing element 600 more tightly, the gap between the casing 100 and the sealing element 600 is reduced, and the sealing degree of the accommodating cavity 110 is further improved.
In some embodiments of the present invention, the sealing member 600 is a rubber plug. The rubber buffer has certain elasticity and satisfies the user demand to have with low costs, the advantage of acquireing easily.
Referring to fig. 1, in some embodiments of the present invention, an explosion-proof thread portion 130 is provided on the housing 100.
Through being provided with explosion-proof line portion 130 on casing 100, can be in external circuit trouble, can in time stop under the condition of electric capacity subassembly 200 work according to the temperature that temperature sensing piece 400 detected, perhaps other unexpected reasons, lead to under the condition of still continuously working when electric capacity subassembly 200 temperature surpasses the threshold value, make when the electrolyte among the electric capacity subassembly 200 is heated the inflation, explosion-proof line portion 130 can be opened when pressure is greater than the threshold value, in time release casing 100 pressure in the inside, realize the effect of directional pressure release, avoid appearing the condition appearance of exploding, be favorable to reducing the harm to near device, the security is improved.
Referring to fig. 3, the circuit system according to the second aspect of the present invention includes the above-mentioned electrolytic capacitor with thermal protection function and a control driving unit 700, the control driving unit 700 is electrically connected to the temperature sensing element 400 and the capacitor module 200 respectively, and the control driving unit 700 controls the capacitor module 200 to operate according to the voltage or current of the temperature sensing element 400.
The control driving unit 700 can generate a driving signal to signal the capacitor assembly 200 to work, because the voltage or the current of the temperature sensing element 400 is related to the temperature, the control driving unit 700 can obtain the actual working temperature of the capacitor assembly 200 according to the voltage or the current of the temperature sensing element 400, so that when the actual working temperature of the capacitor assembly 200 exceeds a threshold value, the control driving unit 700 stops or adjusts the capacitor assembly 200 to work, the capacitor assembly 200 is prevented from continuously working under the condition of overhigh temperature, the problem that the electrolyte in the capacitor assembly 200 is sprayed out to cause accidents is avoided, and the reliability is improved.
The control driving unit 700 may be a device capable of receiving, processing, and generating signals, including a single chip, an embedded chip, and the like. The control driving unit 700 may also be an embodiment including a comparator, a first input terminal of the comparator is electrically connected to the temperature sensing element 400, a second input terminal of the comparator is connected to the reference voltage, and the temperature sensing element 400 increases its voltage to be greater than the reference voltage or decreases it to be less than the reference voltage according to the temperature change, so that the output level of the comparator changes, and the capacitor assembly 200 stops working. When the control driving unit 700 may also be an embodiment including a single chip, the single chip is integrated with an analog-to-digital conversion circuit and stores a determination program, the analog-to-digital conversion circuit can convert an analog signal generated by the temperature sensing element 400 according to a temperature change into a digital signal, the digital signal is temperature value data, the determination program can compare the temperature value data with threshold value data, and when the temperature value is greater than the threshold value, the single chip stops or adjusts the operation of the capacitor assembly 200.
In practical application, the driving unit 700 is controlled to stop or adjust the voltage or current of the temperature sensing element 400 when the capacitor assembly 200 is adjusted, the voltage or current can be set through peripheral capacitors, resistors and other devices, and the use requirement can be met by setting a proper temperature threshold. For example, when the control driving unit 700 is an embodiment including a comparator, the temperature sensing element 400 is electrically connected to a first input terminal of the comparator, a second input terminal of the comparator is connected to a voltage dividing circuit, the voltage dividing circuit includes two resistors, and the reference voltage inputted to the second input terminal of the comparator can be adjusted by setting resistance values of the two resistors, so as to adjust the voltage or current of the temperature sensing element 400 when the output level of the comparator changes, thereby setting a suitable temperature threshold and meeting the use requirement.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (9)
1. An electrolytic capacitor with a thermal protection function, comprising:
the shell (100), the shell (100) is provided with a cavity (110);
a capacitive assembly (200) disposed in the cavity (110);
an electrode pin (300) disposed on the housing (100), the electrode pin (300) being connected to the capacitor assembly (200), the electrode pin (300) being connectable to an external circuit;
the temperature sensing piece (400) is arranged in the cavity (110);
the connecting pin (500) is arranged on the shell (100), the connecting pin (500) is connected with the temperature sensing piece (400), and the connecting pin (500) can be connected with an external circuit.
2. The electrolytic capacitor with thermal protection function as claimed in claim 1, wherein: the capacitor assembly (200) comprises a positive foil (210), a negative foil (220) and electrolytic paper (230), the electrode pins (300) comprise a positive pin (310) connected with the positive foil (210) and a negative pin (320) connected with the negative foil (220), the electrolytic paper (230) is located between the positive foil (210) and the negative foil (220), and the positive foil (210), the negative foil (220) and the electrolytic paper (230) are wound in the cavity (110).
3. The electrolytic capacitor with thermal protection function as claimed in claim 2, wherein: the positive electrode foil (210) and the negative electrode foil (220) are both aluminum foils.
4. The electrolytic capacitor with thermal protection function as claimed in claim 1, wherein: the electrode pin connector further comprises a sealing element (600), the shell (100) is provided with an opening communicated with the containing cavity (110), the sealing element (600) is connected with the shell (100) to seal the opening, and the sealing element (600) is provided with a through hole allowing the electrode pin (300) and the connecting pin (500) to pass through.
5. The electrolytic capacitor with thermal protection function as claimed in claim 4, wherein: and the wall surface of the sealing element (600) forming the through hole is provided with an elastic part which is abutted with the outer side wall surfaces of the electrode pin (300) and the connecting pin (500).
6. The electrolytic capacitor with thermal protection function as claimed in claim 5, wherein: the housing (100) is provided with a narrowing portion (120), and the inner wall surface forming the narrowing portion (120) is abutted against the outer wall surface of the seal member (600).
7. The electrolytic capacitor with thermal protection function as claimed in claim 6, wherein: the sealing element (600) is a rubber plug.
8. The electrolytic capacitor with thermal protection function as claimed in claim 1, wherein: the shell (100) is provided with an explosion-proof thread part (130).
9. Circuitry, characterized by: the electrolytic capacitor with the thermal protection function and the control driving unit (700) as claimed in any one of claims 1 to 8, wherein the control driving unit (700) is electrically connected to the temperature sensing element (400) and the capacitor assembly (200), respectively, and the control driving unit (700) controls the capacitor assembly (200) to operate according to the voltage or current of the temperature sensing element (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038813.3U CN212967425U (en) | 2020-09-16 | 2020-09-16 | Electrolytic capacitor with thermal protection function and circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038813.3U CN212967425U (en) | 2020-09-16 | 2020-09-16 | Electrolytic capacitor with thermal protection function and circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212967425U true CN212967425U (en) | 2021-04-13 |
Family
ID=75369465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022038813.3U Active CN212967425U (en) | 2020-09-16 | 2020-09-16 | Electrolytic capacitor with thermal protection function and circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212967425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038092A (en) * | 2020-09-16 | 2020-12-04 | 广东长虹电子有限公司 | Electrolytic capacitor with thermal protection function and circuit system |
-
2020
- 2020-09-16 CN CN202022038813.3U patent/CN212967425U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038092A (en) * | 2020-09-16 | 2020-12-04 | 广东长虹电子有限公司 | Electrolytic capacitor with thermal protection function and circuit system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6941787B2 (en) | Contact failure detection system | |
| US8031453B2 (en) | Industrial process field device with improved battery assembly | |
| US10574004B2 (en) | Cable and power supply device | |
| US20190013628A1 (en) | Connector protection method and system | |
| CN212967425U (en) | Electrolytic capacitor with thermal protection function and circuit system | |
| US20170288456A1 (en) | Robust and High Current Smart-Plug | |
| CN102984368B (en) | A kind of mobile terminal for automatically identifying genuine battery and recognition methods thereof | |
| TW201913121A (en) | Charging cable | |
| WO2018086143A1 (en) | Battery, battery management system, mobile platform, and electricity consumption device | |
| CN112038092A (en) | Electrolytic capacitor with thermal protection function and circuit system | |
| CN103107520B (en) | Lithium ion battery overheat protector system and method | |
| CN210038763U (en) | USB equipment plug detection circuit under operating system off-line state | |
| US20140162098A1 (en) | Battery module and detecting method thereof | |
| CN116544728A (en) | Electric connector, electric connector assembly and electric automobile | |
| CN209312909U (en) | High-temperature-resistant zinc-manganese battery | |
| CN107608423B (en) | Temperature controller with lateral lifting type protection device | |
| CN208352475U (en) | A kind of lithium battery fireproof anti-explosion device | |
| CN116802959A (en) | Output control circuit, starting power supply and storage battery clamp | |
| CN208127544U (en) | High-tension connector temperature monitoring device | |
| CN113653950B (en) | Intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal | |
| CN111873802B (en) | Method, apparatus, medium, and device for determining electronic device | |
| CN215497388U (en) | Discharge gun with protection function | |
| CN213068000U (en) | Composite PTC thermistor with temperature measuring signal | |
| CN219084240U (en) | Temperature sensor for central heating system | |
| CN210109276U (en) | Button cell electric quantity is low detection circuitry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |