CN117734474A - Power supply system of commercial vehicle, charging control method and commercial vehicle - Google Patents
Power supply system of commercial vehicle, charging control method and commercial vehicle Download PDFInfo
- Publication number
- CN117734474A CN117734474A CN202311714430.5A CN202311714430A CN117734474A CN 117734474 A CN117734474 A CN 117734474A CN 202311714430 A CN202311714430 A CN 202311714430A CN 117734474 A CN117734474 A CN 117734474A
- Authority
- CN
- China
- Prior art keywords
- relay
- charging
- battery pack
- power battery
- positive
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 58
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000002618 waking effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply system of a commercial vehicle, a charging control method and the commercial vehicle, wherein the power supply system of the commercial vehicle comprises the following components: the device comprises a first charging port, a second charging port, a third charging port, a fourth charging port, a first power battery pack, a second power battery pack and a controller, wherein the first power battery pack is respectively connected with the first charging port and the second charging port, and the second power battery pack is respectively connected with the third charging port and the fourth charging port; the controller is used for controlling the first fast charging relay and the second fast charging relay to be closed when the first power battery pack meets the charging condition, and controlling the third fast charging relay and the fourth fast charging relay to be closed when the second power battery pack meets the charging condition. By adopting the system, the power battery pack can be charged through a plurality of charging ports at the same time, the reliability is high, the charging time is effectively shortened, and the charging process is stable in operation.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a power supply system of a commercial vehicle, a charging control method and the commercial vehicle.
Background
In the related technology, the new energy vehicle is transported by a trunk line and has large electric quantity demand, the total electric quantity is divided into two groups of battery packs, and the two groups of battery packs with the total electric quantity exceeding 600kwh are quickly charged by using the traditional double guns, so that the charging time is overlong, the charging efficiency is low, and the demand of customers is not met.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. It is therefore an object of the present invention to provide a power supply system for a commercial vehicle, with which the charging time can be effectively shortened and the charging process can be operated stably.
The second object of the invention is to provide a commercial vehicle.
The third objective of the present invention is to provide a charging control method.
The fourth purpose of the invention is to provide a commercial vehicle.
In order to solve the above-mentioned problems, an embodiment of a first aspect of the present invention provides a power supply system for a commercial vehicle, including: the first charging port, the second charging port, the third charging port and the fourth charging port; the first power battery pack is connected with the first charging port and the second charging port respectively, a first quick charging relay is connected between the positive electrode of the first power battery pack and the first charging port, a second quick charging relay is connected between the positive electrode of the first power battery pack and the second charging port, the second power battery pack is connected with the third charging port and the fourth charging port respectively, a third quick charging relay is connected between the positive electrode of the second power battery pack and the third charging port, and a fourth quick charging relay is connected between the positive electrode of the second power battery pack and the fourth charging port; and the controller is used for controlling the first quick charging relay and the second quick charging relay to be closed when the first power battery pack meets the charging condition, and controlling the third quick charging relay and the fourth quick charging relay to be closed when the second power battery pack meets the charging condition.
According to the power supply system of the commercial vehicle, provided by the embodiment of the invention, four charging ports are arranged to charge two groups of power battery packs, and the controller controls the first fast charging relay and the second fast charging relay and the third fast charging relay and the fourth fast charging relay to be closed, so that the first power battery pack and the second power battery pack are respectively charged or simultaneously charged, the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
In some embodiments, the power supply system further comprises: the first end of the main positive relay is connected with the positive end of the electric equipment of the commercial vehicle; the first end of the first positive electrode sub-control relay is connected with the second end of the main positive relay, and the second end of the first positive electrode sub-control relay is connected with the positive electrode of the first power battery pack; the first end of the first main negative relay is connected with the negative electrode of the electric equipment, and the second end of the first main negative relay is connected with the negative electrode of the first power battery pack.
In some embodiments, the power supply system further comprises: the first end of the second positive electrode sub-control relay is connected with the second end of the main positive relay, and the second end of the second positive electrode sub-control relay is connected with the positive electrode of the second power battery pack; the first end of the second main negative relay is connected with the negative electrode of the electric equipment, and the second end of the second main negative relay is connected with the negative electrode of the second power battery pack.
In some embodiments, the power supply system further comprises: the device comprises a pre-charging relay and a pre-charging resistor, wherein the pre-charging relay is connected with the pre-charging resistor in series, a first end of the pre-charging relay connected with the pre-charging resistor in series is connected with a first end of a main positive relay, and a second end of the pre-charging relay connected with the pre-charging resistor in series is connected with a second end of the main positive relay.
In some embodiments, the first charging port and the second charging port are adapted to be connected to two charging guns of a same charging device, and the third charging port and the fourth charging port are adapted to be connected to two charging guns of a same charging device.
An embodiment of a second aspect of the present invention provides a commercial vehicle, including the power supply system, the electric device, and the storage battery described in the foregoing embodiments.
According to the commercial vehicle provided by the embodiment of the invention, the power battery pack is charged simultaneously through the plurality of charging ports by the power supply system, so that the reliability is high, the charging time is effectively shortened, and the charging process is stable to operate.
In some embodiments, the electrical consumer comprises at least a drive motor and a dc-dc (Direct Current-Direct Current) device, the output of which is connected to a battery of the commercial vehicle.
An embodiment of a third aspect of the present invention provides a charging control method for the power supply system of the commercial vehicle described in the foregoing embodiment, where the charging control method includes: when the first power battery pack meets charging conditions, controlling the first quick charging relay and the second quick charging relay to be closed; and when the second power battery pack meets the charging condition, controlling the third fast charging relay and the fourth fast charging relay to be closed.
According to the charging control method provided by the embodiment of the invention, the first power battery pack and the second power battery pack are respectively charged or simultaneously charged by controlling the closing of the first fast charging relay, the second fast charging relay, the third fast charging relay and the fourth fast charging relay, so that the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
In some embodiments, the power supply system includes a main positive relay, a first positive sub-control relay, a first main negative relay, a second positive sub-control relay, and a second main negative relay, the charge control method further comprising: after the first quick charging relay and the second quick charging relay are both closed, the second positive electrode sub-control relay and the second main negative relay are determined to be in an open state, the first main negative relay is controlled to be closed, and the main positive relay and the first positive electrode sub-control relay are controlled to be closed so as to supply power to electric equipment.
In some embodiments, the charge control method further comprises: in the charging process of the first power battery pack, a down high-voltage fault or a charging down high-voltage request is detected, the first quick charging relay and the second quick charging relay are controlled to be disconnected, the main positive relay is controlled to be disconnected, and the first positive sub-control relay and the first main negative relay are controlled to be disconnected in sequence.
In some embodiments, the charge control method further comprises: after the third quick charging relay and the fourth quick charging relay are both closed, the first positive electrode sub-control relay and the first main negative relay are determined to be in an open state, the second main negative relay is controlled to be closed, and the main positive relay and the second positive electrode sub-control relay are controlled to be closed so as to supply power to electric equipment.
In some embodiments, the charge control method further comprises: and in the charging process of the second power battery pack, detecting a low-voltage fault or a charging low-voltage request, controlling the third quick charging relay and the fourth quick charging relay to be disconnected, controlling the main positive relay to be disconnected, and sequentially controlling the second positive sub-control relay and the second main negative relay to be disconnected.
In some embodiments, the charge control method further comprises: responsive to the first primary negative relay opening, the charging loop of the first power battery pack enters a sleep state; responsive to the second primary negative relay opening, the charging loop of the second power battery pack enters a sleep state; and determining that the charging loop of the first power battery pack and the charging loop of the second power battery pack both enter a dormant state, and controlling the whole commercial vehicle to dormant.
An embodiment of a fourth aspect of the present invention provides a commercial vehicle comprising: at least one processor; a memory in communication with the at least one processor; the memory stores a computer program executable by the at least one processor, and the at least one processor implements the charge control method described in the above embodiment when executing the computer program.
According to the commercial vehicle provided by the embodiment of the invention, the first power battery pack and the second power battery pack are respectively charged or simultaneously charged by controlling the closing of the first quick charging relay, the second quick charging relay, the third quick charging relay and the fourth quick charging relay, so that the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
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 foregoing 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, in which:
FIG. 1 is a schematic diagram of a power supply system according to one embodiment of the invention;
FIG. 2 is a block diagram of a commercial vehicle according to one embodiment of the present invention;
fig. 3 is a flowchart of a charge control method according to an embodiment of the present invention;
FIG. 4 is a flowchart of a first power battery pack charging step according to one embodiment of the present invention;
FIG. 5 is a flowchart of a second power battery pack charging step according to one embodiment of the present invention;
fig. 6 is a block diagram of a commercial vehicle according to an alternative embodiment of the present invention.
Reference numerals:
a power supply system 100; a commercial vehicle 200;
a first charging port 1; a second charging port 2; a third charging port 3; a fourth charging port 4; a first power battery pack 5; a second power battery 6; a first fast charge relay 7; a second fast charge relay 8; a third fast charge relay 9; there is a fourth fast charge relay 10; a main positive relay 11; a first positive sub-control relay 12; a first main negative relay 13; a second positive sub-control relay 14; a second main negative relay 15; a precharge relay 16; a precharge resistor 17; powered device 210; a drive motor 211; DCDC device 212; a battery 220; a processor 203; a memory 204.
Detailed Description
Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.
An embodiment of the first aspect of the present invention provides a power supply system for a commercial vehicle, as shown in fig. 1, the power supply system 100 includes: the first charging port 1, the second charging port 2, the third charging port 3, the fourth charging port 4, the first power battery pack 5, the second power battery pack 6, the first quick charging relay 7, the second quick charging relay 8, the third quick charging relay 9, the fourth quick charging relay 10 and the controller.
The first power battery pack 5 is connected with the first charging port 1 and the second charging port 2 respectively, a first fast charging relay 7 is connected between the positive electrode of the first power battery pack 5 and the first charging port 1, a second fast charging relay 8 is connected between the positive electrode of the first power battery pack 5 and the second charging port 2, the second power battery pack 6 is connected with the third charging port 3 and the fourth charging port 4 respectively, a third fast charging relay 9 is connected between the positive electrode of the second power battery pack 6 and the third charging port 3, and a fourth fast charging relay 10 is connected between the positive electrode of the second power battery pack 6 and the fourth charging port 4.
Specifically, when the power battery pack is charged, if the first power battery pack 5 meets the charging condition, the controller controls the first fast charging relay 7 and the second fast charging relay 8 to be both closed so as to charge the first power battery pack 5; if the second power battery pack 6 meets the charging condition, the controller controls the third fast charging relay 9 and the fourth fast charging relay 10 to be closed to charge the second power battery pack 6;
when in charging, the controller controls the fast charging relay to be closed to charge the power battery according to the charging condition, if the first power battery pack 5 meets the charging condition, the second power battery pack 6 does not meet the charging condition, the controller controls the first fast charging relay 7 and the second fast charging relay 8 to be closed, and the third fast charging relay 9 and the fourth fast charging relay 10 are opened to charge the first power battery pack 5; if the second power battery pack 6 meets the charging condition, the first power battery pack 5 does not meet the charging condition, the controller controls the third fast charging relay 9 and the fourth fast charging relay 10 to be closed, the first fast charging relay 7 and the second fast charging relay 8 are both opened, and the second power battery pack 6 is charged; if the first power battery pack 5 and the second power battery pack 6 meet the charging condition, the controller controls the first fast charging relay 7, the second fast charging relay 8, the third fast charging relay 9 and the fourth fast charging relay 10 to be closed, and the first power battery pack 5 and the second power battery pack 6 are charged simultaneously.
According to the power supply system of the commercial vehicle, provided by the embodiment of the invention, four charging ports are arranged to charge two groups of power battery packs, and the controller controls the first fast charging relay and the second fast charging relay and the third fast charging relay and the fourth fast charging relay to be closed, so that the first power battery pack and the second power battery pack are respectively charged or simultaneously charged, the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
In some embodiments, as shown in fig. 1, a power supply system 100 includes: a main positive relay 11, a first positive sub-control relay 12 and a first main negative relay 13.
The first end of the main positive relay 11 is connected with the positive electrode end of electric equipment of the commercial vehicle, the first end of the first positive electrode sub-control relay 12 is connected with the second end of the main positive relay 11, the second end of the first positive electrode sub-control relay 12 is connected with the positive electrode of the first power battery pack 5, the first end of the first main negative relay 13 is connected with the negative electrode of the electric equipment, and the second end of the first main negative relay 13 is connected with the negative electrode of the first power battery pack 5.
Specifically, the first positive electrode sub-control relay 12 is disposed between the positive electrode of the first power battery pack 5 and the positive electrode of the electric device, the first main negative relay 13 is disposed between the negative electrode of the first power battery pack 5 and the negative electrode of the electric device, and when the first positive electrode sub-control relay 12, the first main negative relay 13 and the main positive relay 11 are closed, a loop is formed between the first power battery pack 5 and the electric device, and the first power battery pack 5 can supply power for the electric device.
In some embodiments, as shown in fig. 1, a power supply system 100 includes: a second positive sub-control relay 14 and a second main negative relay 15.
The first end of the second positive sub-control relay 14 is connected with the second end of the main positive relay 11, and the second end of the second positive sub-control relay 14 is connected with the positive electrode of the second power battery pack 6; the first end of the second main negative relay 15 is connected with the negative electrode of the electric equipment, and the second end of the second main negative relay 15 is connected with the negative electrode of the second power battery pack 6.
Specifically, the second positive electrode sub-control relay 14 is disposed between the positive electrode of the second power battery 6 and the positive electrode of the electric device, the second main negative relay 15 is disposed between the negative electrode of the second power battery 6 and the negative electrode of the electric device, and when the second positive electrode sub-control relay 14, the second main negative relay 15 and the main positive relay 11 are closed, a loop is formed between the second power battery 6 and the electric device, and the second power battery 6 can supply power to the electric device.
In some embodiments, as shown in fig. 1, a power supply system 100 includes: a precharge relay 16 and a precharge resistor 17.
The pre-charging relay 16 and the pre-charging resistor 17 are connected in series, a first end of the pre-charging relay 16 and the pre-charging resistor 17 after being connected in series is connected with a first end of the main positive relay 11, and a second end of the pre-charging relay 16 and the pre-charging resistor 17 after being connected in series is connected with a second end of the main positive relay 11.
Specifically, after the pre-charging relay 16 and the pre-charging resistor 17 are connected in series, the pre-charging relay 16 and the pre-charging resistor 17 are connected with the positive relay 11 in parallel, when the first power battery pack 5 or the second power battery pack 6 supplies power to the electric equipment, the pre-charging relay 16 needs to be closed first, so that current is supplied to the electric equipment through the pre-charging relay 16 and the pre-charging resistor 17, the instant large current is prevented from being supplied to the electric equipment, the electric equipment is prevented from being damaged, after the supply current is stable, the main positive relay 11 is closed, and the current is supplied to the electric equipment through the main positive relay 11.
In some embodiments, the first charging port 1 and the second charging port 2 are adapted to be connected to two charging guns of the same charging device, and the third charging port 3 and the fourth charging port 4 are adapted to be connected to two charging guns of the same charging device.
Specifically, in practical application, a charging pile is provided with two charging guns which are respectively connected with four charging ports of the power supply system, and a user can start the charging pile to charge the power battery packs through swiping a card, so that the first power battery pack 5 and the second power battery pack 6 are charged sequentially; the first power battery pack 5 corresponds to the charging port 1 and the charging port 2, the charging port 1 and the charging port 2 are respectively connected with a charging gun A and a charging gun B of the same charging pile, the second power battery pack 6 corresponds to the charging port 3 and the charging port 4, the charging gun A and the charging gun B of the same charging pile are respectively connected with the charging port 3 and the charging port 4, a user needs to connect the charging port and the charging gun one by one during charging, and after connection, the charging pile is started by swiping a card to charge the power battery pack, so that the first power battery pack 5 and the second power battery pack 6 are charged in sequence.
In a second aspect of the present invention, there is provided a commercial vehicle, as shown in fig. 2, a commercial vehicle 200 comprising: power supply system 100, powered device 210, and battery 220.
Specifically, the power supply system 100 in the commercial vehicle 200 supplies power to the electric equipment 210 and the storage battery 220 to provide running power for the vehicle, and supplies power to the vehicle-mounted electronic equipment to ensure the normal running of the vehicle.
According to the commercial vehicle provided by the embodiment of the invention, the power battery pack is charged simultaneously through the plurality of charging ports by the power supply system, so that the reliability is high, the charging time is effectively shortened, and the charging process is stable to operate.
In some embodiments, as shown in fig. 2, powered device 210 includes: a drive motor 211 and a DCDC device 212.
The output of DCDC device 212 is connected to battery 220 of the commercial vehicle.
Specifically, the power supply system 100 transmits a high-voltage current to the driving motor 211 to provide running power for the vehicle; when the high voltage current provided by the power supply system 100 is transferred to the DCDC device 212, the DCDC device 212 converts the high voltage current into a low voltage and stores the low voltage into the battery 220 to power the vehicle electronic equipment.
A seed charge control method according to an embodiment of the third aspect of the present invention is described below with reference to fig. 3, and as shown in fig. 3, the method includes at least steps S1 to S2.
And S1, when the first power battery pack meets the charging condition, controlling the first quick charging relay and the second quick charging relay to be closed.
Specifically, when the first power battery pack 5 meets the charging condition, the second power battery pack 6 does not meet the charging condition, the controller controls the first fast charging relay 7 and the second fast charging relay 8 to be both closed, and the third fast charging relay 9 and the fourth fast charging relay 10 to be both opened, so that only the first power battery pack 5 is charged
And S2, when the second power battery pack meets the charging condition, controlling the third fast charging relay and the fourth fast charging relay to be closed.
Specifically, when the second power battery 6 satisfies the charging condition, the first power battery 5 does not satisfy the charging condition, the controller controls the third fast charging relay 9 and the fourth fast charging relay 10 to be both closed, the first fast charging relay 7 and the second fast charging relay 8 to be both opened, and the second power battery 6 is charged.
When the first power battery pack 5 and the second power battery pack 6 meet the charging condition, the controller controls the first fast charging relay 7, the second fast charging relay 8, the third fast charging relay 9 and the fourth fast charging relay 10 to be closed, and the first power battery pack 5 and the second power battery pack 6 are charged simultaneously.
According to the charging control method provided by the embodiment of the invention, the first power battery pack and the second power battery pack are respectively charged or simultaneously charged by controlling the closing of the first fast charging relay, the second fast charging relay, the third fast charging relay and the fourth fast charging relay, so that the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
In some embodiments, as shown in fig. 1, a power supply system 100 includes: a main positive relay 11, a first positive sub-control relay 12, a first main negative relay 13, a second positive sub-control relay 14 and a second main negative relay 15; the charge control method further includes: after the first quick charging relay and the second quick charging relay are both closed, determining that the second positive sub-control relay and the second main negative relay are both in an open state, controlling the first main negative relay to be closed, and controlling the main positive relay and the first positive sub-control relay to be closed so as to supply power for electric equipment.
Specifically, in the charging process, high voltage on the chassis is required to be ensured so that the DCDC device works, the storage battery is supplemented with electricity to avoid power shortage, and the chassis is required to be firstly high voltage to ensure that the DCDCC device works; if two groups of power battery packs are charged simultaneously before the first charged power battery pack does not exit charging, the last charged power battery pack cannot provide high voltage for the chassis; if the power battery pack gives high voltage to the chassis in the charging process, after full charge, the high voltage to the chassis is stopped, the full charge state is ensured, after the full charged power battery pack exits from charging, the full charged power battery pack needs to continue to give high voltage to the chassis, the DCDC device is ensured to work until full charge, for safety, the positive pole and the negative pole of the two groups of power batteries must be ensured to be not conducted in control, the first positive pole sub-control relay 12 and the second positive pole sub-control relay 14, and the first main negative relay 13 and the second main negative relay 15 cannot be closed at the same time.
If the first power battery 5 is charged first, after the first fast charging relay 7 and the second fast charging relay 8 are controlled to be closed at this time, it is determined that the second positive sub-control relay 14 and the second main negative relay 15 are both in an open state, the first main negative relay 13 is controlled to be closed, the main positive relay 11 and the first positive sub-control relay 12 are controlled to be closed, and the first power battery 5 supplies power to the electric equipment.
In some embodiments, the charge control method further comprises: in the charging process of the first power battery pack, a down high-voltage fault or a charging down high-voltage request is detected, the first quick charging relay and the second quick charging relay are controlled to be disconnected, the main positive relay is controlled to be disconnected, and the first positive sub-control relay and the first main negative relay are controlled to be disconnected in sequence.
Specifically, the power battery pack supplies high voltage to the chassis in the charging process, and after the chassis is full, the power battery pack stops supplying high voltage to the chassis, so that the full-power state is ensured; therefore, a down high voltage fault or a charging down high voltage request is detected in the charging process of the first power battery pack 5, the first fast charging relay 7 and the second fast charging relay 8 are controlled to be opened, the main positive relay 11 is controlled to be opened, and the first positive sub-control relay 12 and the first main negative relay 13 are sequentially controlled to be opened, so that the first power battery pack 5 stops supplying power to the electric equipment.
In some embodiments, the charge control method further comprises: after the third quick charging relay and the fourth quick charging relay are both closed, determining that the first positive electrode sub-control relay and the first main negative relay are both in an open state, controlling the second main negative relay to be closed, and controlling the main positive relay and the second positive electrode sub-control relay to be closed so as to supply power for electric equipment.
Specifically, if the second power battery 6 is charged first, after the third fast charging relay 9 and the fourth fast charging relay 10 are controlled to be closed at this time, it is determined that the first positive sub-control relay 12 and the first main negative relay 13 are both in an open state, the second main negative relay 15 is controlled to be closed, the main positive relay 11 and the second positive sub-control relay 14 are controlled to be closed, and the second power battery 6 supplies power to the electric equipment.
In some embodiments, the charge control method further comprises: in the charging process of the second power battery pack, a low-voltage fault or a charging low-voltage request is detected, the third fast charging relay and the fourth fast charging relay are controlled to be disconnected, the main positive relay is controlled to be disconnected, and the second positive sub-control relay and the second main negative relay are controlled to be disconnected in sequence.
Specifically, the power battery pack supplies high voltage to the chassis in the charging process, and after the chassis is full, the power battery pack stops supplying high voltage to the chassis, so that the full-power state is ensured; therefore, a down high voltage fault or a charging down high voltage request is detected during the charging process of the second power battery pack 6, the third fast charging relay 9 and the fourth fast charging relay 10 are controlled to be opened, the main positive relay 11 is controlled to be opened, and the second positive sub-control relay 14 and the second main negative relay 15 are sequentially controlled to be opened, so that the power second battery pack 6 stops supplying power to the electric equipment.
In some embodiments, the charge control method further comprises: responding to the disconnection of the first main negative relay, and enabling a charging loop of the first power battery pack to enter a dormant state; responding to the disconnection of the second main negative relay, and enabling a charging loop of the second power battery pack to enter a dormant state; and determining that the charging loop of the first power battery pack and the charging loop of the second power battery pack enter a dormant state, and controlling the whole commercial vehicle to be dormant.
Specifically, if the first power battery pack 5 detects a low-voltage fault or a charging low-voltage request, the first main negative relay 13 is disconnected, and after the first main negative relay 13 is disconnected, the charging loop of the first power battery pack is controlled to enter a dormant state; if the second power battery pack 6 detects a low-high voltage fault or a charging low-high voltage request, the second main negative relay 15 is disconnected, and the charging loop of the second power battery pack 6 is controlled to enter a dormant state after the second main negative relay 15 is disconnected; when the charging loop of the first power battery pack 5 and the charging loop of the second power battery pack 6 both enter a dormant state, the whole commercial vehicle is controlled to be dormant, and the power battery packs are not used for supplying power to electric equipment.
The following describes an example of the charging step of the first power battery pack according to the embodiment of the present invention with reference to fig. 4, which is described in detail below.
And S3, waking up.
And S4, low-voltage power-on initialization.
Step S5, if the charging condition is satisfied, executing step S6, otherwise executing step S19.
And S6, closing the first quick charge relay and the second quick charge relay.
Step S7, if there is a down high voltage fault or a charging down high voltage request, executing step S14 if yes, otherwise executing step S6.
And S8, whether the second positive sub-control relay and the second main negative relay are disconnected or not, if yes, executing the step S9, and otherwise executing the step S6.
Step S9, the first main negative relay is closed.
And S10, closing a first positive pole sub-control relay.
And S11, pre-charging a chassis high-voltage loop.
Step S12, in the charging operation.
Step S13, if there is a low-voltage fault or a charging low-voltage request, executing step S14 if yes, otherwise executing step S12.
Step S14, the first fast charge relay and the second fast charge relay are turned off.
And S15, the main positive relay is disconnected.
In step S16, the chassis loop actively discharges.
Step S17, the first positive sub-control relay is disconnected
Step S18, first main negative relay is disconnected
Step S19, the first power battery charging loop is dormant and ready
Step S20, if the first power battery charging circuit and the second power battery charging circuit are dormant, step S21 is executed if they are dormant, and step S19 is executed otherwise.
Step S21, the whole vehicle is dormant.
The charging step of the second power battery pack according to the embodiment of the present invention is illustrated with reference to fig. 5, and the following details are given.
Step S22, waking up.
Step S23, low voltage power-on initialization.
Step S24, if the charging condition is satisfied, executing step S25, otherwise executing step S38.
Step S25, the third and fourth fast charge relays are closed.
Step S26, if there is a low-voltage fault or a charging low-voltage request, executing step S33 if yes, otherwise executing step S25.
Step S27, if the first positive sub-control relay and the first main negative relay are disconnected, step S28 is executed, otherwise step S25 is executed.
In step S28, the second main negative relay is closed.
And S29, closing a second positive pole sub-control relay.
And step S30, pre-charging the chassis high-voltage loop.
Step S31, in charging operation.
Step S32, if there is a low-voltage fault or a charging low-voltage request, executing step S33 if yes, otherwise executing step S31.
And step S33, the third fast charging relay and the fourth fast charging relay are disconnected.
Step S34, the main positive relay is turned off.
In step S35, the chassis loop actively discharges.
And S36, disconnecting the second positive electrode sub-control relay.
Step S37, the second main negative relay is turned off.
In step S38, the second power battery charging loop is dormant.
In a fourth aspect, the present invention provides a commercial vehicle, as shown in fig. 6, the commercial vehicle 200 includes: a processor 203 and a memory 204.
The at least one processor 203 is communicatively connected to the at least one memory 204, and a computer program executable by the at least one processor 203 is stored in the memory 204, and the at least one processor 203 implements a charging control method when executing the computer program.
According to the commercial vehicle provided by the embodiment of the invention, the first power battery pack and the second power battery pack are respectively charged or simultaneously charged by controlling the closing of the first quick charging relay, the second quick charging relay, the third quick charging relay and the fourth quick charging relay, so that the charging time is effectively shortened, the charging process is stable to operate, and the reliability is high.
In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, substrate, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A power supply system for a commercial vehicle, comprising:
the first charging port, the second charging port, the third charging port and the fourth charging port;
the first power battery pack is connected with the first charging port and the second charging port respectively, a first quick charging relay is connected between the positive electrode of the first power battery pack and the first charging port, a second quick charging relay is connected between the positive electrode of the first power battery pack and the second charging port, the second power battery pack is connected with the third charging port and the fourth charging port respectively, a third quick charging relay is connected between the positive electrode of the second power battery pack and the third charging port, and a fourth quick charging relay is connected between the positive electrode of the second power battery pack and the fourth charging port;
and the controller is used for controlling the first quick charging relay and the second quick charging relay to be closed when the first power battery pack meets the charging condition, and controlling the third quick charging relay and the fourth quick charging relay to be closed when the second power battery pack meets the charging condition.
2. The power supply system of claim 1, further comprising:
the first end of the main positive relay is connected with the positive end of the electric equipment of the commercial vehicle;
the first end of the first positive electrode sub-control relay is connected with the second end of the main positive relay, and the second end of the first sub-control relay is connected with the positive electrode of the first power battery pack;
the first end of the first main negative relay is connected with the negative electrode of the electric equipment, and the second end of the first main negative relay is connected with the negative electrode of the first power battery pack.
3. The power supply system of claim 2, further comprising:
the first end of the second positive electrode sub-control relay is connected with the second end of the main positive relay, and the second end of the second positive electrode sub-control relay is connected with the positive electrode of the second power battery pack;
the first end of the second main negative relay is connected with the negative electrode of the electric equipment, and the second end of the second main negative relay is connected with the negative electrode of the second power battery pack.
4. A power supply system according to claim 3, characterized in that the power supply system further comprises:
the device comprises a pre-charging relay and a pre-charging resistor, wherein the pre-charging relay is connected with the pre-charging resistor in series, a first end of the pre-charging relay connected with the pre-charging resistor in series is connected with a first end of a main positive relay, and a second end of the pre-charging relay connected with the pre-charging resistor in series is connected with a second end of the main positive relay.
5. The power supply system of any one of claims 1-4, wherein the first charging port and the second charging port are adapted to be connected to two charging guns of a same charging device, and the third charging port and the fourth charging port are adapted to be connected to two charging guns of a same charging device.
6. A commercial vehicle comprising a power supply system as claimed in any one of claims 1-5, a consumer and a battery.
7. The utility vehicle of claim 6, characterized in that the consumer comprises at least a drive motor and a DCDC device, the output of which is connected to a battery of the utility vehicle.
8. A charge control method for the power supply system of the commercial vehicle according to any one of claims 1 to 5, comprising:
when the first power battery pack meets charging conditions, controlling the first quick charging relay and the second quick charging relay to be closed;
and when the second power battery pack meets the charging condition, controlling the third fast charging relay and the fourth fast charging relay to be closed.
9. The charge control method according to claim 8, wherein the power supply system includes a main positive relay, a first positive sub-control relay, a first main negative relay, a second positive sub-control relay, and a second main negative relay, the charge control method further comprising:
after the first quick charging relay and the second quick charging relay are both closed, the second positive electrode sub-control relay and the second main negative relay are determined to be in an open state, the first main negative relay is controlled to be closed, and the main positive relay and the first positive electrode sub-control relay are controlled to be closed so as to supply power to electric equipment.
10. The charge control method according to claim 9, characterized in that the charge control method further comprises:
in the charging process of the first power battery pack, a down high-voltage fault or a charging down high-voltage request is detected, the first quick charging relay and the second quick charging relay are controlled to be disconnected, the main positive relay is controlled to be disconnected, and the first positive sub-control relay and the first main negative relay are controlled to be disconnected in sequence.
11. The charge control method according to claim 10, characterized in that the charge control method further comprises:
after the third quick charging relay and the fourth quick charging relay are both closed, the first positive electrode sub-control relay and the first main negative relay are determined to be in an open state, the second main negative relay is controlled to be closed, and the main positive relay and the second positive electrode sub-control relay are controlled to be closed so as to supply power to electric equipment.
12. The charge control method according to claim 11, characterized in that the charge control method further comprises:
and in the charging process of the second power battery pack, detecting a low-voltage fault or a charging low-voltage request, controlling the third quick charging relay and the fourth quick charging relay to be disconnected, controlling the main positive relay to be disconnected, and sequentially controlling the second positive sub-control relay and the second main negative relay to be disconnected.
13. The charge control method according to claim 12, characterized in that the charge control method further comprises:
responsive to the first primary negative relay opening, the charging loop of the first power battery pack enters a sleep state;
responsive to the second primary negative relay opening, the charging loop of the second power battery pack enters a sleep state;
and determining that the charging loop of the first power battery pack and the charging loop of the second power battery pack both enter a dormant state, and controlling the whole commercial vehicle to dormant.
14. A commercial vehicle, comprising:
at least one processor;
a memory in communication with the at least one processor;
the memory stores therein a computer program executable by the at least one processor, the at least one processor implementing the charge control method of any of claims 8-13 when the computer program is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311714430.5A CN117734474A (en) | 2023-12-13 | 2023-12-13 | Power supply system of commercial vehicle, charging control method and commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311714430.5A CN117734474A (en) | 2023-12-13 | 2023-12-13 | Power supply system of commercial vehicle, charging control method and commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117734474A true CN117734474A (en) | 2024-03-22 |
Family
ID=90278623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311714430.5A Pending CN117734474A (en) | 2023-12-13 | 2023-12-13 | Power supply system of commercial vehicle, charging control method and commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117734474A (en) |
-
2023
- 2023-12-13 CN CN202311714430.5A patent/CN117734474A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103124082B (en) | The charging system of electric automobile and ground charging device | |
| CN103051019A (en) | Battery pack series-parallel switching control system and charge and discharge control method thereof | |
| CN105416069B (en) | A kind of power supply for electric car | |
| CN110549867B (en) | Dual-mode automatic switching control method of hydrogen fuel cell vehicle | |
| CN112158106B (en) | Charging control circuit of electric automobile with double battery systems and control method thereof | |
| CN112537227A (en) | Electric control system and method for hydrogen fuel commercial vehicle | |
| CN112878415B (en) | Power module control method and system of electric excavator and electric excavator | |
| CN111216556A (en) | Low-voltage power storage unit charging control method and system and unmanned vehicle | |
| CN105764741A (en) | Power control system and method for controlling input power limit of DC-DC voltage converter | |
| CN110994769A (en) | Double-battery system and mobile terminal equipment | |
| CN111934414B (en) | Control method of standby power control system of power change station and power change station | |
| CN111746308B (en) | Electric power system and control method thereof | |
| KR20130127056A (en) | Cell balancing method for battery pack | |
| CN114228562A (en) | Power battery charging and discharging management system and method thereof | |
| CN109193885B (en) | Control system of photovoltaic energy storage inverter | |
| CN117734474A (en) | Power supply system of commercial vehicle, charging control method and commercial vehicle | |
| CN215119008U (en) | Power battery charging and discharging management system | |
| CN206124784U (en) | Hybrid formula generator intelligence opens stops controller | |
| CN113910936A (en) | Vehicle-mounted charger and control method thereof | |
| CN217705547U (en) | Unmanned vehicle battery management system | |
| CN113910932A (en) | Vehicle-mounted power supply assembly and control method thereof | |
| CN112895980A (en) | Low-temperature charging method and device for new energy automobile | |
| CN215870796U (en) | Control circuit and control system of electric dining car | |
| CN105946585B (en) | A kind of Vehicular power management system and electric vehicle | |
| CN214412333U (en) | Battery management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |