CN213279204U - Bidirectional power supply conversion control system - Google Patents
Bidirectional power supply conversion control system Download PDFInfo
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- CN213279204U CN213279204U CN202022018906.XU CN202022018906U CN213279204U CN 213279204 U CN213279204 U CN 213279204U CN 202022018906 U CN202022018906 U CN 202022018906U CN 213279204 U CN213279204 U CN 213279204U
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- starter
- positive electrode
- bidirectional converter
- generator
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 11
- 239000007858 starting material Substances 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Charge By Means Of Generators (AREA)
Abstract
The utility model relates to a two-way power supply conversion control system, it includes 12V generator, 24V starter, 24V direct current battery, two-way converter and 12V consumer, the positive terminal of 12V generator is connected the 12V positive terminal of two-way converter and the positive terminal of 12V consumer, the positive terminal of 12V consumer still is connected the 12V positive terminal of two-way converter; the 24V direct current battery is connected with a 24V positive terminal of the bidirectional converter on one hand and is connected with a positive terminal of the 24V starter on the other hand; and the 12V generator, the 24V starter, the 24V direct-current battery, the 12V electric equipment and the negative end of the bidirectional converter are all grounded. The utility model discloses can make the starter start smoothly.
Description
Technical Field
The utility model relates to an automobile power supply technical field, concretely relates to two-way power supply conversion control system.
Background
As shown in FIG. 1, the power supply system of the existing agricultural vehicle supplies power to a 12V starting battery and a vehicle-mounted electrical appliance by a generator when the generator works; when the generator stops rotating, the 12V starting battery supplies power to the vehicle-mounted electrical appliance, and when the generator is to be started, the 12V starter is started by the 12V starting battery supplying power. The starter needs the 12V starting battery to provide enough power at the starting moment to start normally, and at a low environmental temperature, the starter needs more power for starting due to the solidification of lubricating oil, the discharge capacity of the 12V starting battery is poor at the temperature, the starting is difficult, and even the 12V starting battery is damaged.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above problems, the utility model provides a two-way power supply conversion control system, it can start starting motor smoothly.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bidirectional power supply conversion control system comprises a 12V generator, a 24V starter, a 24V direct-current battery, a bidirectional converter and 12V electric equipment, wherein the 12V generator, the 24V starter, the 24V direct-current battery and the 12V electric equipment are respectively provided with a positive terminal and a negative terminal, and the bidirectional converter is provided with a 24V positive terminal, a 12V positive terminal and a negative terminal;
the positive electrode end of the 12V generator is connected with the 12V positive electrode end of the bidirectional converter and the positive electrode end of the 12V electric equipment, and the positive electrode end of the 12V electric equipment is also connected with the 12V positive electrode end of the bidirectional converter; the 24V direct current battery is connected with a 24V positive terminal of the bidirectional converter on one hand and is connected with a positive terminal of the 24V starter on the other hand; and the 12V generator, the 24V starter, the 24V direct-current battery, the 12V electric equipment and the negative end of the bidirectional converter are all grounded.
The 24 VDC battery is formed by connecting two 12 VDC batteries in series.
The bidirectional converter comprises a voltage detection module, a boosting module and a voltage reduction module, wherein the input end of the voltage detection module is connected with a 12V positive electrode end and a 24V positive electrode end, and the output end of the voltage detection module is connected with the control end of the boosting module and the control end of the voltage reduction module; the input end of the boosting module is connected with the 12V positive electrode end, and the output end of the boosting module is connected with the 24V positive electrode end; the input end of the voltage reduction module is connected with the 24V positive electrode end, and the output end of the voltage reduction module is connected with the 12V positive electrode end.
After the scheme is adopted, the starter is set to be the 24V starter, and for the starter with equal power, the utility model discloses enable the starting current of starter to reduce by half, and the maximum output current of battery is unchangeable, even under low temperature environment, the battery performance is impaired, leads to its maximum output current to reduce to and under the condition that starting current increases, the maximum current that the battery can output also can satisfy the starting current of starter. Thereby realized starter and started smoothly, solved effectively: under the low temperature environment, because the starter lubricating oil solidifies easily, needs bigger starting power, but simultaneously, the battery is too low because of the temperature, can't the heavy current discharge, leads to the output power not enough, can't open the problem of starter smoothly.
Drawings
FIG. 1 is a schematic diagram of the connection of a power supply system of an original vehicle;
fig. 2 is a schematic diagram of the connection of the power supply system of the present invention;
fig. 3 is a schematic block diagram of the bidirectional converter of the present invention.
Description of reference numerals:
a 12V generator 1; a 24V starter 2; a 24 vdc battery 3; a newly added 12V storage battery 31; a conventional 12V starting battery 32; a bidirectional converter 4; a voltage detection module 41; a boost module 42; a voltage reduction module 43; 12V consumer 5.
Detailed Description
As shown in fig. 2-3, the utility model discloses a bidirectional power supply conversion control system, it includes 12V generator 1, 24V starter 2, 24V direct current battery 3, bidirectional converter 4 and 12V consumer 5, 12V generator 1, 24V starter 2, 24V direct current battery 3, 12V consumer 5 all are equipped with positive terminal and negative pole end, bidirectional converter 4 is equipped with 24V positive terminal, 12V positive terminal and negative pole end; the positive electrode end of the 12V generator 1 is connected with the 12V positive electrode end of the bidirectional converter 4 and the positive electrode end of the 12V electric equipment 5, and the positive electrode end of the 12V electric equipment 5 is also connected with the 12V positive electrode end of the bidirectional converter 4; the 24V direct current battery 3 is connected with a 24V positive terminal of the bidirectional converter 4 on one hand and is connected with a positive terminal of the 24V starter 2 on the other hand; and the 12V generator 1, the 24V starter 2, the 24V direct-current battery 3, the 12V electric equipment 5 and the negative pole end of the bidirectional converter 4 are grounded.
The 24V direct current battery 3 is formed by connecting a newly added 12V storage battery 31 and an original 12V starting battery 32 in series.
The bidirectional converter 4 comprises a voltage detection module 41, a voltage boosting module and a voltage reducing module 43, wherein the input end of the voltage detection module 41 is connected with a 12V positive electrode end and a 24V positive electrode end, and the output end of the voltage detection module 41 is connected with the control end of the voltage boosting module and the control end of the voltage reducing module 43; the input end of the boosting module is connected with the 12V positive electrode end, and the output end of the boosting module is connected with the 24V positive electrode end; the input end of the voltage reduction module 43 is connected with the 24V positive terminal, and the output end is connected with the 12V positive terminal. The bidirectional converter 4 may be a conventional bidirectional converter 4, and therefore, the structure thereof will not be described herein.
When the vehicle is started, the 24V starter 2 is supplied with power through the 24V direct-current battery 3, the 24V starter 2 is started, the 24V starter 2 drags the engine, and the engine drives the 12V generator 1 to work. When the 12V generator 1 works, the 24V direct current battery 3 can be charged through the bidirectional converter while the 12V electric equipment 5 is supplied with power. When the 12V generator 1 does not work (such as parking), the 24V battery pack supplies power to the 12V electric equipment 5 through the bidirectional converter 4.
when the monitoring module of the bidirectional converter 4 detects that the voltage on the 12V side is higher than a set threshold value, or detects that a dry contact signal given by the 12V generator 1 is started, the bidirectional converter 4 enters a boost working mode, and charges the 24V battery pack with the electric energy of the 12V generator 1.
When the detection module of the bidirectional converter 4 detects that the voltage at the 12V side is lower than the set threshold, or detects that a dry contact signal given by the 12V generator 1 is stopped, the bidirectional converter enters a step-down operation mode, converts the electric energy of the 24V battery pack into 12V, and supplies power to the 12V electric equipment 5. When the bidirectional converter 4 detects that the voltage on the 24V side is lower than the set threshold, the power supply to the 12V electric equipment 5 is stopped.
The starter is set to be the 24V starter 2, and for the starter with equal power, the utility model discloses enable the starting current of starter to halve, and the maximum output current of battery is unchangeable, even under the low temperature environment, the battery performance is impaired, leads to its maximum output current to reduce to and under the circumstances that starting current increases, the maximum current that the battery can output also can satisfy the starting current of starter. Thereby effectively solving the following problems: under the low temperature environment, because the starter lubricating oil solidifies easily, needs bigger starting power, but simultaneously, the battery is too low because of the temperature, can't the heavy current discharge, leads to the output power not enough, can't open the problem of starter smoothly.
In addition, different from the one-way converter, the two-way converter 4 can charge the 24V starting battery pack with the electric energy generated by the generator when the generator works, so that the battery pack has sufficient electric quantity, and the service life of the battery pack is prolonged. During parking, the 24V battery pack is subjected to voltage reduction through the bidirectional converter 4, and power is supplied to 12V electric equipment.
The above description is only an embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (3)
1. A bidirectional power supply conversion control system is characterized in that: the starter comprises a 12V generator, a 24V starter, a 24V direct-current battery, a bidirectional converter and 12V electric equipment, wherein the 12V generator, the 24V starter, the 24V direct-current battery and the 12V electric equipment are respectively provided with a positive terminal and a negative terminal, and the bidirectional converter is provided with a 24V positive terminal, a 12V positive terminal and a negative terminal;
the positive electrode end of the 12V generator is connected with the 12V positive electrode end of the bidirectional converter and the positive electrode end of the 12V electric equipment, and the positive electrode end of the 12V electric equipment is also connected with the 12V positive electrode end of the bidirectional converter; the 24V direct current battery is connected with a 24V positive terminal of the bidirectional converter on one hand and is connected with a positive terminal of the 24V starter on the other hand; the 12V generator, the 24V starter, the 24V direct-current battery, the 12V electric equipment and the negative pole end of the bidirectional converter are all grounded.
2. The bi-directional power conversion control system of claim 1, wherein: the 24 VDC battery is formed by connecting two 12 VDC batteries in series.
3. The bi-directional power conversion control system of claim 1, wherein: the bidirectional converter comprises a voltage detection module, a boosting module and a voltage reduction module, wherein the input end of the voltage detection module is connected with a 12V positive electrode end and a 24V positive electrode end, and the output end of the voltage detection module is connected with the control end of the boosting module and the control end of the voltage reduction module; the input end of the boosting module is connected with the 12V positive electrode end, and the output end of the boosting module is connected with the 24V positive electrode end; the input end of the voltage reduction module is connected with the 24V positive electrode end, and the output end of the voltage reduction module is connected with the 12V positive electrode end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022018906.XU CN213279204U (en) | 2020-09-15 | 2020-09-15 | Bidirectional power supply conversion control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022018906.XU CN213279204U (en) | 2020-09-15 | 2020-09-15 | Bidirectional power supply conversion control system |
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| Publication Number | Publication Date |
|---|---|
| CN213279204U true CN213279204U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022018906.XU Active CN213279204U (en) | 2020-09-15 | 2020-09-15 | Bidirectional power supply conversion control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213279204U (en) |
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2020
- 2020-09-15 CN CN202022018906.XU patent/CN213279204U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Bidirectional power conversion control system Effective date of registration: 20211021 Granted publication date: 20210525 Pledgee: Xiamen Haicang Financing Guarantee Co.,Ltd. Pledgor: TBB POWER (XIAMEN) CO.,LTD. Registration number: Y2021980011106 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231027 Granted publication date: 20210525 Pledgee: Xiamen Haicang Financing Guarantee Co.,Ltd. Pledgor: TBB POWER (XIAMEN) CO.,LTD. Registration number: Y2021980011106 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |