CN219513834U - Direct-current conversion charging device and generator using same - Google Patents
Direct-current conversion charging device and generator using same Download PDFInfo
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- CN219513834U CN219513834U CN202320370649.7U CN202320370649U CN219513834U CN 219513834 U CN219513834 U CN 219513834U CN 202320370649 U CN202320370649 U CN 202320370649U CN 219513834 U CN219513834 U CN 219513834U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a direct-current conversion charging device and a generator using the same, wherein the device comprises a shell, a direct-current converter is arranged on the shell, and one end of the direct-current converter is connected with one end of an output filter; the other end of the output filter is connected with the output positive and negative electrode posts; one end of the power relay is connected with the other end of the direct current converter, and the other end of the power relay is connected with one end of the input filter; the other end of the input filter is connected with the input positive and negative electrode posts; the current-voltage detector is connected with a circuit between the input positive and negative electrode posts and the output positive and negative electrode posts; the main control board is respectively connected with the power relay, the direct current converter and the current-voltage detector; the input positive and negative electrode post is connected with the positive and negative electrode of the generator, and the input positive and negative electrode post is connected with the positive and negative electrode of the lithium battery; the main control board is respectively connected with the generator and the lithium battery in a communication way.
Description
Technical Field
The utility model relates to the field of charging devices, in particular to a direct-current conversion charging device and a generator using the same.
Background
At present, a vehicle-mounted generator direct current conversion module outputs constant voltage and constant current, and when the rotating speed of the generator is low (the automobile is idling), the charging is very slow, and the generator is overloaded and generates heat. The existing solution is to use a low-power converter to prevent the generator from being overloaded, but the problem that the battery is charged very slowly occurs.
Disclosure of Invention
In order to overcome the background technology, the current vehicle-mounted generator direct-current conversion module is constant-voltage and constant-current output, and when the rotation speed of the generator is low (the idle speed of an automobile), the charging is very slow, and the generator is overloaded and heated. The existing solution is to use a low-power converter to prevent the overload of the generator, but the problem that the battery is charged very slowly occurs.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the present utility model provides a dc conversion charging device, including a housing, the housing including
The direct current converter is connected with one end of the output filter;
the other end of the output filter is connected with the output positive and negative electrode posts;
one end of the power relay is connected with the other end of the direct current converter, and the other end of the power relay is connected with one end of the input filter;
the other end of the input filter is connected with the input positive and negative electrode posts;
the current-voltage detector is connected with a circuit between the input positive and negative electrode posts and the output positive and negative electrode posts;
the main control board is respectively connected with the power relay, the direct current converter and the current-voltage detector;
the input positive and negative electrode posts are connected with the positive electrode and the negative electrode of the generator, and the input positive and negative electrode posts are connected with the positive electrode and the negative electrode of the lithium battery;
and the main control board is respectively in communication connection with the generator and the lithium battery.
The utility model has the beneficial effects that: after the generator starts to work, the input positive and negative poles of the direct-current conversion charging device are connected with the positive and negative poles of the generator, and the output positive and negative poles of the direct-current conversion charging device are connected with the positive and negative poles of the lithium battery, so that the generator charges the lithium battery through the direct-current conversion charging device. At the moment, the output current of the charging signal is allowed to pass through the frequency filtering of the input filter, the main control board is electrified, the power relay switch is controlled to be closed, the lithium battery is charged through the direct current converter, the output current of the charging signal is allowed to pass through the frequency filtering of the output filter, the charging current is increased from zero at a certain frequency, in the charging process, whether the generator is overloaded or not is detected in real time through the current-voltage detector, if the generator is overloaded, the output voltage is reduced, and the output current is reduced; if the generator is not overloaded, the output current is increased continuously at a certain frequency. The main control board detects whether the lithium battery is full or not through real-time communication with the lithium battery, and if the lithium battery is full, the main control board controls to disconnect the excitation signal of the generator so that the generator stops charging; if the lithium battery is not fully charged, the charging is continued.
In the charging process, on the premise of ensuring that the generator is not overloaded, the generator charges the lithium battery with the maximum charging power through the direct-current charger; meanwhile, the main control board detects whether the lithium battery is full in real time, and controls the end and the continuation of charging by controlling the on-off of the excitation signal of the generator, so that overcharge or underfilling is prevented, and the charging efficiency, the charging requirement and the charging safety are considered.
In some possible embodiments, the main control board includes a current-voltage detection interface for connecting with a current-voltage detector.
In some possible embodiments, the main control board includes a relay drive interface for interfacing with a power relay.
In some possible embodiments, the main control board includes a PWM drive interface for connection with a dc converter.
In some possible embodiments, the main control board includes an excitation signal control interface for connection with a generator.
In some possible implementations, the main control board includes a CAN communication module, the CAN communication module is connected with a communication connector, the CAN communication module is connected with the communication connector, and the communication connector is embedded on the second side plate of the housing and is used for being in communication connection with a CAN interface on the lithium battery.
In some possible embodiments, the main control board further comprises at least one fan control interface for fan connection, the fan is disposed on a first side plate of the housing, and the first side plate is disposed in a rack structure or a grid structure.
In a second aspect of the present utility model, a generator is provided, the generator being a vehicle-mounted generator, the vehicle-mounted generator applying the dc conversion charging device described above.
Drawings
Fig. 1 is a schematic diagram of an overall circuit connection structure of a dc conversion charging device according to an embodiment of the present utility model;
fig. 2 is a schematic perspective view of a dc conversion charging device according to an embodiment of the utility model;
fig. 3 is a schematic perspective view of a dc conversion charging device according to an embodiment of the utility model.
In the figure: 1. a generator; 2. inputting positive and negative electrode posts; 3. an input filter; 4. a power relay; 5. a current-voltage detector; 6. a DC converter; 7. an output filter; 8. a main control board; 9. outputting positive and negative electrode posts; 10. a communication connector; 11. a lithium battery; 12. a CAN interface; 13. a blower; 14. a PWM driving interface; 15. a CAN communication module; 16. a relay drive interface; 17. a fan control interface; 18. a current-voltage detection interface; 19. an excitation signal control interface; 20. a housing; 21. a first side plate; 22. and a second side plate.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1 to 3, a dc conversion charging device according to the present embodiment includes a housing 20, and the housing 20 includes
A dc converter 6, wherein one end of the dc converter 6 is connected to one end of an output filter 7;
the other end of the output filter 7 is connected with an output positive and negative electrode post 9;
a power relay 4, wherein one end of the power relay 4 is connected with the other end of the direct current converter 6, and the other end of the power relay 4 is connected with one end of the input filter 3;
the other end of the input filter 3 is connected with the input positive and negative electrode post 2;
a current-voltage detector 5, the current-voltage detector 5 being in electrical connection with the input positive-negative electrode post 2 and the output positive-negative electrode post 9;
the main control board 8 is respectively connected with the power relay 4, the direct current converter 6 and the current-voltage detector 5;
the input positive and negative electrode post 2 is connected with the positive and negative electrode of the generator 1, and the input positive and negative electrode post 2 is connected with the positive and negative electrode of the lithium battery 11;
the main control board 8 is respectively in communication connection with the generator 1 and the lithium battery 11.
After the generator 1 starts to operate, the input positive and negative poles 2 of the direct-current conversion charging device are connected with the positive and negative poles of the generator 1, and the output positive and negative poles 9 of the direct-current conversion charging device are connected with the positive and negative poles of the lithium battery 11, so that the generator 1 charges the lithium battery 11 through the direct-current conversion charging device. At this time, the output current of the charging signal is filtered through the input filter 3 in frequency, the main control board 8 is electrified, the switch of the power relay 4 is controlled to be closed, the lithium battery 11 is charged through the direct current converter 6 at this time, the output current of the charging signal is filtered through the output filter 7 in frequency, the charging current is increased from zero at a certain frequency, in the charging process, whether the generator 1 is overloaded or not is detected in real time through the current voltage detector 5, if the generator 1 is overloaded, the output voltage is reduced, and the output current is reduced; if the generator 1 is not overloaded, the output current continues to increase at a certain frequency. The main control board 8 detects whether the lithium battery 11 is full or not through real-time communication with the lithium battery 11, and if the lithium battery 11 is full, the main control board 8 controls to disconnect the excitation signal of the generator 1 so that the generator 1 stops charging; if the lithium battery 11 is not fully charged, charging is continued.
In the charging process, on the premise of ensuring that the generator 1 is not overloaded, the generator 1 charges the lithium battery 11 with the maximum charging power through a direct-current charger; meanwhile, the main control board 8 detects whether the lithium battery 11 is full in real time, and controls the end and the continuation of charging by controlling the on-off of the excitation signal of the generator 1, so that overcharge or underfilling is prevented, and the charging efficiency, the charging requirement and the charging safety are considered.
In some embodiments, the main control board 8 includes a current-voltage detection interface 18, and the current-voltage detection interface 18 is used to connect with the current-voltage detector 5.
The main control board 8 receives the detected current and voltage signals sent by the current and voltage detector 5 in real time through the current and voltage detection interface 18, judges whether the generator 1 is overloaded according to the detected current and voltage signals,
in some embodiments, the main control board 8 includes a relay drive interface 16, the relay drive interface 16 being configured to interface with the power relay 4.
The switch control of the main control board 8 to the power relay 4 is realized through the relay driving interface 16, so that the charging is controlled.
In some embodiments, the main control board 8 includes a PWM drive interface 14, and the PWM drive interface 14 is used to connect with the dc converter 6.
The control of the output power of the direct current converter 6 by the main control board 8 is realized through the PWM driving interface 14. The PWM driving does not require digital to analog conversion, and keeping the signal in digital form minimizes noise effects.
In some embodiments, the main control board 8 includes an excitation signal control interface 19, and the excitation signal control interface 19 is used to connect with the generator 1.
The excitation signal control interface 19 is used for receiving and transmitting excitation signals between the main control board 8 and the excitation of the generator 1, so that the main control board 8 controls the excitation of the generator 1 through the excitation signals to control whether to charge or not.
In some embodiments, referring to fig. 2, the main control board 8 includes a CAN communication module 15, where the CAN communication module 15 is connected to the communication connector 10, and the communication connector 10 is embedded on the second side plate 22 of the housing 20, and is used for communication connection with the CAN interface 12 on the lithium battery 11.
The main control board 8 and the lithium battery 11 adopt CAN communication, and have the advantages of strong real-time performance, long transmission distance, strong electromagnetic interference resistance, low cost and the like, and the double-wire serial communication mode has strong error detection capability and CAN work in a high-noise interference environment.
In some embodiments, see fig. 3. The main control board 8 further comprises at least one fan control interface 17, the fan 13 control interface 17 is used for being connected with a fan, the fan 13 is arranged on a first side plate 21 of the shell 20, and the first side plate 21 can be arranged into a rack structure or a grid structure.
Referring to fig. 2, the input positive and negative electrode tabs 2 and the output positive and negative electrode tabs 9 are embedded on a second side plate 22 of the housing 20, and the first side plate 21 and the second side plate 22 are opposite to each other.
The main control board 8 controls the fan through a fan control structure, and the fan is arranged to radiate heat in the shell 20 of the direct-current conversion charging device, so that the charging efficiency is improved; the rack structure or the grid structure can enable the wind blown out by the fan 13 to be evenly fed into the shell 20, and even heat dissipation is achieved.
The embodiment provides a generator, the generator 1 is a vehicle-mounted generator, and the vehicle-mounted generator applies the direct-current conversion charging device.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A direct current conversion charging device comprising a housing (20), characterized in that: the shell (20) is provided with
A direct current converter (6), wherein one end of the direct current converter (6) is connected with one end of an output filter (7);
the other end of the output filter (7) is connected with an output positive and negative pole post (9);
one end of the power relay (4) is connected with the other end of the direct current converter (6), and the other end of the power relay (4) is connected with one end of the input filter (3);
the input filter (3), the other end of the input filter (3) is connected with the input positive and negative electrode post (2);
a current-voltage detector (5), the current-voltage detector (5) being in electrical connection with the input positive and negative electrode post and the output positive and negative electrode post (9);
the main control board (8), the main control board (8) is connected with the power relay (4), the direct current converter (6) and the current-voltage detector (5) respectively;
the input positive and negative electrode post (2) is connected with the positive and negative electrode of the generator (1), and the input positive and negative electrode post (2) is connected with the positive and negative electrode of the lithium battery (11);
the main control board (8) is respectively in communication connection with the generator (1) and the lithium battery (11).
2. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) comprises a current and voltage detection interface (18), and the current and voltage detection interface (18) is used for being connected with the current and voltage detector (5).
3. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) comprises a relay driving interface (16), and the relay driving interface (16) is used for being connected with the power relay (4).
4. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) comprises a PWM driving interface (14), and the PWM driving interface (14) is used for being connected with the direct current converter (6).
5. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) comprises an excitation signal control interface (19), and the excitation signal control interface (19) is used for being connected with the generator (1).
6. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) comprises a CAN communication module (15), the CAN communication module (15) is connected with the communication connector (10), and the communication connector (10) is embedded on a second side plate (22) of the shell (20) and is used for being in communication connection with a CAN interface (12) on the lithium battery (11).
7. The direct current conversion charging apparatus according to claim 1, wherein: the main control board (8) further comprises at least one fan control interface (17), the fan control interface (17) is used for being connected with the fan (13), the fan (13) is arranged on a first side plate (21) of the shell (20), and the first side plate (21) is arranged into a rack structure or a grid structure.
8. Generator, characterized in that the generator (1) is a vehicle generator applying the direct current conversion charging device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370649.7U CN219513834U (en) | 2023-03-02 | 2023-03-02 | Direct-current conversion charging device and generator using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370649.7U CN219513834U (en) | 2023-03-02 | 2023-03-02 | Direct-current conversion charging device and generator using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219513834U true CN219513834U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320370649.7U Active CN219513834U (en) | 2023-03-02 | 2023-03-02 | Direct-current conversion charging device and generator using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219513834U (en) |
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2023
- 2023-03-02 CN CN202320370649.7U patent/CN219513834U/en active Active
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