CN114261272A - Battery system, control method, electronic device, and storage medium for hybrid vehicle - Google Patents
Battery system, control method, electronic device, and storage medium for hybrid vehicle Download PDFInfo
- Publication number
- CN114261272A CN114261272A CN202111637983.6A CN202111637983A CN114261272A CN 114261272 A CN114261272 A CN 114261272A CN 202111637983 A CN202111637983 A CN 202111637983A CN 114261272 A CN114261272 A CN 114261272A
- Authority
- CN
- China
- Prior art keywords
- voltage output
- battery pack
- voltage
- secondary voltage
- state
- 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 31
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 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 description 8
- 230000006870 function Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a battery system, a control method, an electronic device and a storage medium of a hybrid electric vehicle. The battery system includes: the voltage switching device comprises a main voltage output end, a first secondary voltage output end, a second secondary voltage output end, a secondary voltage output battery pack, a voltage switching battery pack and a controller, wherein the first secondary voltage output end is connected with the second secondary voltage output end in parallel; when the voltage switching battery pack is in a main voltage output state, the main voltage output end outputs the main voltage, and the secondary voltage output end does not output the main voltage; when the voltage switching battery pack is in a secondary voltage output state, the secondary voltage output end outputs secondary voltage, and the main voltage output end does not output voltage. The invention reduces the total demand for cell capacity.
Description
Technical Field
The present invention relates to the field of automotive related technologies, and in particular, to a battery system, a control method, an electronic device, and a storage medium for a hybrid vehicle.
Background
At present, a 48V hybrid vehicle needs a 12V battery and a 48V battery, and the two batteries are combined, and meanwhile, the two batteries are in use requirements for special scenes, and the capacities of the two batteries are large. In practice, the capacity demand scenarios for the two cells are different, as shown in table 1.
TABLE 1 existing 12V and 48V Battery usage scenarios
As can be seen from the summary of table 1, the prior art is wasteful of having one battery of capacity in each scenario.
Disclosure of Invention
In view of the above, it is necessary to provide a battery system, a control method, an electronic device, and a storage medium for a hybrid vehicle, which solve the technical problem of battery capacity waste in the related art.
The invention provides a battery system of a hybrid electric vehicle, comprising: the voltage switching circuit comprises a main voltage output end, a first secondary voltage output end, a second secondary voltage output end, a secondary voltage output battery pack, a voltage switching battery pack and a controller, wherein the first secondary voltage output end is connected with the second secondary voltage output end in parallel, the first secondary voltage output end is grounded through the secondary voltage output battery pack, the first secondary voltage output end outputs secondary voltage, the main voltage output end and the second secondary voltage output end are respectively and electrically connected with the voltage switching battery pack, and the controller controls the voltage switching battery pack to switch between a main voltage output state and a secondary voltage output state;
when the voltage switching battery pack is in a main voltage output state, the main voltage output end outputs a main voltage, and the secondary voltage output end does not output the main voltage;
when the voltage switching battery pack is in a secondary voltage output state, the secondary voltage output end outputs secondary voltage, and the main voltage output end does not output voltage.
Further, the voltage switching battery pack comprises a first branch and one or more second branches, the first branch is electrically connected with the main voltage output end, and the second branch is electrically connected with the second secondary voltage output end;
when the voltage switching battery pack is in a main voltage output state, the first branch circuit is connected with one or more second branch circuits in series, the main voltage output end outputs series voltage, and the second secondary voltage output end does not output voltage;
when the voltage switching battery pack is in a secondary voltage output state, the first branch is disconnected, the main voltage output end has no output, a plurality of second branches are connected in parallel, or a single second branch is electrically connected with the second secondary voltage output end, and the second secondary voltage output end outputs the voltage of the second branch.
Furthermore, the first branch circuit comprises a first battery pack, each second branch circuit comprises a second battery pack and a second switch which are connected in series, and a plurality of second battery packs or the first battery pack and the second battery pack are connected in series through the first switch;
the first switch is closed, the second switch is opened, and the voltage switching battery pack is switched to a main voltage output state;
the first switch is turned off, the second switch is turned on, and the voltage switching battery pack is switched to a secondary voltage output state.
The present invention provides a battery system control method for a battery system of a hybrid vehicle as described above, including:
acquiring a vehicle state;
and controlling the voltage switching battery pack to be switched into a main voltage output state or a secondary voltage output state according to the state of the vehicle.
Further, the controlling the voltage-switching battery pack to switch to the primary voltage output state or the secondary voltage output state according to the vehicle state specifically includes:
and when the vehicle is in a non-driving state, controlling the voltage switching battery pack to be switched to a secondary voltage output state.
Further, the controlling the voltage-switching battery pack to switch to the primary voltage output state or the secondary voltage output state according to the vehicle state specifically includes
And when the vehicle is in a running state, controlling the voltage switching battery pack to be switched into a main voltage output state or a secondary voltage output state according to whether the vehicle has a fault.
Still further, when the vehicle is in a driving state, controlling the voltage-switching battery pack to switch to the primary voltage output state or the secondary voltage output state according to whether the vehicle has a fault, specifically includes:
and when the vehicle is in a running state, if the vehicle has a fault, controlling the voltage switching battery pack to be switched to a secondary voltage output state, and if the vehicle has no fault, controlling the voltage switching battery pack to be switched to a primary voltage output state.
Still further, the fault includes: generator failure, first voltage output failure.
The present invention provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to at least one of the processors; wherein the content of the first and second substances,
the memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the battery system control method as previously described.
The present invention provides a storage medium storing computer instructions for performing all the steps of the battery system control method as described above when the computer executes the computer instructions.
According to the invention, different voltages are switched and output by the voltage switching battery pack, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total requirement of the cell capacity is reduced. Meanwhile, the electric cores are unified into one type, so that the energy loss caused by the adoption of various electric cores in the prior art is avoided, the energy utilization rate is improved, and the distribution requirements can be reduced due to the centralized arrangement of the electric cores.
Drawings
Fig. 1 is a circuit diagram of a battery system of a hybrid vehicle according to the present invention;
fig. 2 is a flowchart illustrating a method for controlling a battery system of a hybrid vehicle according to the present invention;
fig. 3 is a flowchart illustrating a method for controlling a battery system of a hybrid vehicle according to an embodiment of the present invention;
fig. 4 is a schematic diagram of signal changes when the secondary voltage output battery pack 4, BSG, DCDC have no fault in the vehicle-using cycle;
fig. 5 is a schematic diagram of signal changes when the secondary voltage output battery pack 4, BSG, DCDC have a fault in the vehicle-using cycle;
fig. 6 is a schematic diagram of a hardware structure of an electronic device according to the present invention.
Reference numerals
1-main voltage output; 11-48V negative terminal; 2-a first secondary voltage output; a 21-12V negative terminal A; 3-a second secondary voltage output terminal; a 31-12V negative terminal B; 4-time voltage output battery pack; 5-voltage switching battery pack; 51-a first branch; 52-a second branch; 53-a first battery; 54-a second battery pack; 6-a logical not gate; 7-step delayer; 8-integrated battery pack.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example one
Fig. 1 shows a circuit diagram of a battery system of a hybrid vehicle according to the present invention, which includes: the voltage switching circuit comprises a main voltage output end 1, a first secondary voltage output end 2, a second secondary voltage output end 3, a secondary voltage output battery pack 4, a voltage switching battery pack 5 and a controller, wherein the first secondary voltage output end 2 is connected with the second secondary voltage output end 3 in parallel, the first secondary voltage output end 2 is grounded through the secondary voltage output battery pack 4, the first secondary voltage output end 2 outputs secondary voltage, the main voltage output end 1 and the second secondary voltage output end 3 are respectively and electrically connected with the voltage switching battery pack 5, and the controller controls the voltage switching battery pack 5 to switch between a main voltage output state and a secondary voltage output state;
when the voltage switching battery pack 5 is in a main voltage output state, the main voltage output end 1 outputs a main voltage, and the second voltage output end 3 does not output the main voltage;
when the voltage switching battery pack 5 is in a secondary voltage output state, the secondary voltage output end 3 outputs secondary voltage, and the main voltage output end 1 does not output any voltage.
Specifically, the battery system of the embodiment is used for a hybrid vehicle. The mains voltage output at the mains voltage output 1 is used to power the electric power system of the vehicle, preferably a high voltage, e.g. 48V. The first secondary voltage output 2 and the second secondary voltage output 3 are connected in parallel to supply the low voltage system of the vehicle, the secondary voltage preferably being a low voltage, for example 12V. The first secondary voltage output end 2 is electrically connected with the secondary voltage output battery pack 4 to continuously output the secondary voltage. The controller may be an Electronic Control Unit (ECU) of the vehicle. The controller outputs a control signal to control the voltage switching battery pack 5 to switch between a primary voltage output state and a secondary voltage output state. In the primary voltage output state, the primary voltage output terminal 1 outputs the primary voltage to the electromotive force system, the secondary voltage output terminal 3 does not output the secondary voltage, and only the first secondary voltage output terminal 2 outputs the secondary voltage. In the secondary voltage output state, the primary voltage output end 1 has no output, the secondary voltage output end 3 is connected with the primary voltage output end 2 in parallel to output the secondary voltage, and the capacitance of the secondary voltage is increased at the moment.
The primary voltage is high and the secondary voltage is low. For a 48V hybrid vehicle, the primary voltage is 48V and the secondary voltage is 12V.
According to the invention, different voltages are switched and output by the voltage switching battery pack, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total requirement of the cell capacity is reduced.
Example two
Fig. 1 is a circuit diagram of a battery system of a hybrid vehicle according to an embodiment of the present invention, including: the voltage switching circuit comprises a main voltage output end 1, a first secondary voltage output end 2, a second secondary voltage output end 3, a secondary voltage output battery pack 4, a voltage switching battery pack 5 and a controller, wherein the first secondary voltage output end 2 is connected with the second secondary voltage output end 3 in parallel, the first secondary voltage output end 2 is grounded through the secondary voltage output battery pack 4, the first secondary voltage output end 2 outputs secondary voltage, the main voltage output end 1 and the second secondary voltage output end 3 are respectively and electrically connected with the voltage switching battery pack 5, and the controller controls the voltage switching battery pack 5 to switch between a main voltage output state and a secondary voltage output state;
when the voltage switching battery pack 5 is in a main voltage output state, the main voltage output end 1 outputs a main voltage, and the second voltage output end 3 does not output the main voltage;
when the voltage switching battery pack 5 is in a secondary voltage output state, the secondary voltage output end 3 outputs secondary voltage, and the main voltage output end 1 does not output voltage;
the voltage switching battery pack 5 comprises a first branch 51 and one or more second branches 52, wherein the first branch 51 is electrically connected with the main voltage output end 1, and the second branch 52 is electrically connected with the second secondary voltage output end 3;
when the voltage switching battery pack 5 is in a main voltage output state, the first branch 51 is connected in series with one or more second branches 52, the main voltage output end 1 outputs a series voltage, and the second secondary voltage output end 3 does not output a series voltage;
when the voltage switching battery pack 5 is in a secondary voltage output state, the first branch 51 is disconnected, the main voltage output terminal 1 has no output, a plurality of second branches 52 are connected in parallel, or a single second branch 52 is electrically connected with the second secondary voltage output terminal 3, and the second secondary voltage output terminal 3 outputs the voltage of the second branch 52;
the first branch 51 comprises a first battery pack 53, each second branch 52 comprises a second battery pack 54 and a second switch connected in series, and a plurality of second battery packs 54 or the first battery pack 53 and the second battery pack 54 are connected in series through the first switch;
the first switch is closed, the second switch is opened, and the voltage switching battery pack 5 is switched to a main voltage output state;
the first switch is turned off, the second switch is turned on, and the voltage switching battery pack 5 is switched to a sub-voltage output state.
Specifically, as shown in fig. 1, in the case of a 48V hybrid vehicle, the main voltage output terminal 1 is a 48V positive terminal, the first secondary voltage output terminal 2 is a 12V positive terminal a, the second secondary voltage output terminal 3 is a 12V positive terminal B, and the 48V negative terminal 11, the 12V ground terminal a 21, and the 12V ground terminal B31 are grounded. The secondary voltage output battery pack 4 may be formed by connecting a plurality of battery cells in series, and outputs a secondary voltage through the first secondary voltage output terminal 2. In a 48V hybrid vehicle, the first secondary voltage output terminal 2 outputs a secondary voltage of 12V. The controller controls the voltage switching battery pack 5 by the control signal. One end of a control signal output by the controller is respectively in communication connection with the second switch, and the other end of the control signal is in communication connection with the first switch through the logical NOT gate 6. The second switch comprises switches K1, K3, K5, and the first switch comprises switches K2, K4, K6. The switches K1-K6 may be transistors or relays. When the control signal controls the first switch to be closed, the logical not gate 6 outputs the opposite signal of the control signal, so that the second switch is opened. Similarly, when the control signal controls the first switch to be opened, the logical not gate 6 outputs the opposite signal of the control signal, so that the second switch is closed.
When the first switch is closed and the second switch is open, i.e. the switches K2, K4, K6 are closed and the switches K1, K3, K5 are open, the second battery packs 54 in the second branch 52 are sequentially connected in series and finally connected in series with the first battery packs 53 in the first branch 51, and output the series voltage to the main voltage output terminal 1, and the voltage switching battery pack 5 is switched to the main voltage output state. Preferably, there are three second branches 52 in fig. 1, each second branch 52 including a 12V second battery pack 54. The first branch 51 comprises a first battery pack 53 of 12V, so that the series voltage output by the main voltage output 1 is 48V, supplying a high voltage device, such as a drive motor. While at the same time the first secondary voltage output terminal 2 continues to output the secondary voltage provided by the secondary voltage output battery pack 4. Preferably, the secondary voltage output battery pack 4 provides a secondary voltage of 48V, and the first secondary voltage output terminal 2 outputs the secondary voltage of 48V. Since each second branch 52 comprises the second battery pack 54 and the second switch connected in series, when the second switch is turned off, for example, the switches K1, K3, and K5 are turned off, the second sub-voltage output terminal 3 is disconnected from all the second branches 52, so that no voltage is output, and only the first sub-voltage output terminal 2 supplies power to the low-voltage devices.
When the first switch is opened and the second switch is closed, that is, the switches K2, K4, and K6 are opened (turned off) and the switches K1, K3, and K5 are closed, the first battery pack 53 in the first branch 51 is disconnected from all the second battery packs 54, the main voltage output terminal 1 does not output, and the voltage-switching battery pack 5 is switched to the secondary voltage output state. While at the same time the first secondary voltage output terminal 2 continues to output the secondary voltage provided by the secondary voltage output battery pack 4. Preferably, the secondary voltage output battery pack 4 provides a secondary voltage of 48V, and the first secondary voltage output terminal 2 outputs the secondary voltage of 48V. Since each second branch 52 includes the second battery pack 54 and the second switch connected in series, when the second switch is closed, for example, the switches K1, K3, and K5 are closed, the second sub-voltage output terminal 3 is connected to all the second branches 52, one second branch 52 may be electrically connected to the second sub-voltage output terminal 3, or a plurality of parallel second branches 52 may be electrically connected to the second sub-voltage output terminal 3. In fig. 1, preferably, three second branches 52 are connected in parallel, and the second battery pack 54 of each second branch 52 is 12V, so that the voltage output by the final second secondary voltage output terminal 3 is 12V secondary voltage. The first secondary voltage output end 2 and the second secondary voltage output end 3 are connected in parallel, and finally 12V voltage is provided for low-voltage equipment of a vehicle. And at this time, the secondary voltage output battery pack 4 and one or more second battery packs 54 are connected in parallel to collectively supply the secondary voltage, thereby increasing the capacity of the secondary voltage.
In addition, the secondary voltage output battery pack 4, one or more second battery packs 54, and the first battery pack 53 constitute an integrated battery pack.
Preferably, the first battery pack 53 includes two lithium iron phosphate cells connected in series, and the second battery pack 54 includes 4 lithium iron phosphate cells connected in series.
In this embodiment, different voltages are switched and output through the voltage switching battery pack, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total demand of the cell capacity is reduced. Meanwhile, the electric cores are unified into one type, so that the energy loss caused by the adoption of various electric cores in the prior art is avoided, the energy utilization rate is improved, and the distribution requirements can be reduced due to the centralized arrangement of the electric cores.
EXAMPLE III
Fig. 2 is a flowchart illustrating a method for controlling a battery system of a hybrid vehicle according to the present invention, including:
step S201, acquiring a vehicle state;
step S202, according to the vehicle state, controls the voltage switching battery pack 5 to switch to the primary voltage output state or the secondary voltage output state.
Specifically, the present invention can be applied to an Electronic Control Unit (ECU) of a vehicle. The battery system control method of the present invention is executed by, for example, a controller of a battery system of a hybrid vehicle as described above. The controller may be an Engine Control Module (ECM).
Step S201 is first executed to acquire a vehicle state. Vehicle states include, but are not limited to, an engine state, a fault state of the secondary voltage output battery pack 4, a start-drive Starter Generator (BSG) fault state, and a direct current (DCDC) fault state.
Then step S202 controls the voltage-switching battery pack 5 to switch to the primary voltage output state or the secondary voltage output state by the controller according to the vehicle state. For example, when the vehicle is running and the main voltage output state is switched, power is supplied to a high-voltage device of the vehicle, for example, a drive motor of the vehicle. And when the vehicle is in a non-driving state, the vehicle is switched to a secondary voltage output state, and the cell capacity of the secondary voltage for supplying power to the low-voltage equipment is improved.
According to the invention, different voltages are switched and output through the voltage switching battery pack according to the vehicle state, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total requirement of the capacity of the battery cell is reduced.
Example four
Fig. 3 is a flowchart illustrating a method for controlling a battery system of a hybrid vehicle according to an embodiment of the present invention, including:
step S301, obtaining a vehicle state;
step S302, when the vehicle is in a non-driving state, controlling the voltage switching battery pack 5 to switch to a secondary voltage output state;
step S303, when the vehicle is in a running state, controls the voltage-switching battery pack 5 to switch to the primary voltage output state or the secondary voltage output state according to whether the vehicle has a failure.
In one embodiment, when the vehicle is in a driving state, the controlling the voltage-switching battery pack 5 to switch to the primary voltage output state or the secondary voltage output state according to whether the vehicle has a fault includes:
when the vehicle is in a running state, the voltage-switching battery pack 5 is controlled to switch to a secondary voltage output state if the vehicle fails, and the voltage-switching battery pack 5 is controlled to switch to a primary voltage output state if the vehicle does not fail.
In one embodiment, the fault comprises: generator failure, first voltage output failure.
Specifically, first, step S301 acquires the vehicle state. Step S302 and step S303 are executed according to the vehicle state. When the vehicle is in a non-driving state, step S302 is executed to control the voltage switching battery pack 5 to switch to a secondary voltage output state, so as to increase the cell capacity of the secondary voltage for supplying power to the low-voltage device. When the vehicle is in the running state, step S303 is executed to control the voltage-switching battery pack 5 to switch to the primary voltage output state or the secondary voltage output state according to whether the vehicle has a failure. When the vehicle breaks down, the voltage switching battery pack 5 is controlled to be switched to a secondary voltage output state no matter whether the vehicle runs or not, a backup power supply is provided for the secondary voltage through the second secondary voltage output end 3, and the running safety of the vehicle is guaranteed. At the moment, the main voltage output end 1 has no output, and the hybrid electric vehicle is driven to run by a fuel engine. When the vehicle is not in fault, the voltage switching battery pack 5 is controlled to be switched to a main voltage output state when the vehicle runs, and the main voltage output end 1 outputs the main voltage to support the vehicle power assisting/recovering. Wherein the fault comprises: generator failure, first voltage output failure. Specifically, both the BSG fault and the DCDC fault are determined to be a generator fault.
According to the embodiment, different voltages are switched and output through the voltage switching battery pack according to the vehicle state, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total requirement of the cell capacity is reduced. The capacity requirements under different vehicle states are met, and when the vehicle runs, the main voltage output is provided, so that the electric driving requirements of the hybrid electric vehicle are met. And a backup power supply of secondary voltage is provided when the vehicle breaks down, so that the running safety of the vehicle is ensured.
A circuit diagram of a battery system of a hybrid vehicle shown in fig. 1 is taken as an example. Table 2 shows the operation of the switches and the output of each terminal when the sub-voltage output battery packs 4, BSG, and DCDC are not failed in the motoring cycle. Table 3 shows a scenario in which the secondary voltage output battery pack 4, BSG, or DCDC fails during the vehicle cycle. The battery pack can output 12V and 48V at the same time, and only 12V is output safely in a vehicle failure mode, so that the safety of a vehicle power supply is ensured.
TABLE 2
TABLE 3
Specifically, fig. 4 is a schematic diagram showing signal changes when the sub-voltage output battery packs 4, BSG, and DCDC are not faulty during the vehicle-use cycle.
At the beginning, the vehicle is in the parking state, is the non-driving state, includes: a parking scenario, a parking ignition scenario, and a parking start scenario. At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
The vehicle then enters a driving state, including a driving scenario. At this time, the switches K1, K3, and K5 are opened, and the switches K2, K4, and K6 are closed.
During driving, a temporary stop state may be entered, which is a non-driving state including a start-stop scene and a start-stop start scene. At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
Then, the driving is resumed, namely, the driving state is entered again, at this time, the switches K1, K3 and K5 are opened, and the switches K2, K4 and K6 are closed.
And finally, stopping the vehicle and turning off the vehicle, and entering a stopping state, namely a turning-off scene, which is a non-driving state.
At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
In the whole process, the fault identification signal is 0, and no fault is represented.
Fig. 5 is a schematic diagram showing signal changes when the secondary voltage output battery packs 4, BSG, and DCDC fail in the vehicle running cycle.
At the beginning, the vehicle is in the parking state, is the non-driving state, includes: a parking scenario, a parking ignition scenario, and a parking start scenario. At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
The vehicle then enters a driving state, including a driving scenario. At this time, the switches K1, K3, and K5 are opened, and the switches K2, K4, and K6 are closed.
During driving, a temporary stop state may be entered, which is a non-driving state including a start-stop scene and a start-stop start scene. At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
Then, the driving is resumed, namely, the driving state is entered again, at this time, the switches K1, K3 and K5 are opened, and the switches K2, K4 and K6 are closed.
During driving, the fault identification signal outputs a high level 1, which indicates that a fault is identified, at which time the switches K1, K3, K5 are closed and the switches K2, K4, K6 are opened.
And finally, stopping the vehicle and turning off the vehicle, and entering a stopping state, namely a turning-off scene, which is a non-driving state.
At this time, switches K1, K3, and K5 are closed, and switches K2, K4, and K6 are opened.
The invention switches and outputs different voltages through the voltage switching battery pack, thereby providing different main voltage battery capacities and sub-voltage battery capacities aiming at different scenes. The main voltage battery capacity is a battery capacity for outputting the main voltage, and the sub-voltage battery capacity is a battery capacity for outputting the sub-voltage.
Taking a 48V hybrid vehicle as an example, the main voltage battery capacity is 48V battery capacity, and the sub-voltage battery capacity is 12V battery capacity, for the battery system of the hybrid vehicle shown in fig. 1:
in a parking scene, 16 battery cells are switched into 12V batteries, and the capacity of a 48V battery is 0;
in an ignition scene and a parking starting scene, 16 electric cores are switched into 12V batteries, and the capacity of the 48V battery is 0;
in a driving scene, 4 cells serve as 12V batteries, and 14 cells serve as 48V batteries;
in a flameout scene and about half an hour after flameout, 16 cells are cut into 12V batteries, and the 48V battery capacity is 0;
if a generator fault occurs during the running of the vehicle, 16 electric cores are cut into 12V batteries, and the capacity of the 48V battery is 0;
if a 12V battery failure occurs while the vehicle is running, wherein 4 cells of the secondary voltage output battery pack are used as a 12V battery a, 12 cells of the second battery pack 54 can be used as a 12V battery B, and the secondary voltage output battery pack has a backup battery function. When the battery a composed of 4 cells of the secondary voltage output battery pack 4 fails, the other cells are all changed to be used as a 12V battery. The 48V battery after conversion had no capacity.
EXAMPLE six
Fig. 6 is a schematic diagram of a hardware structure of an electronic device according to the present invention, which includes:
at least one processor 601; and the number of the first and second groups,
a memory 602 communicatively coupled to at least one of the processors 601; wherein the content of the first and second substances,
the memory 602 stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the battery system control method as previously described.
In fig. 6, one processor 601 is taken as an example.
The electronic device may further include: an input device 603 and a display device 604.
The processor 601, the memory 602, the input device 603, and the display device 604 may be connected by a bus or other means, and are illustrated as being connected by a bus.
The memory 602, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the battery system control method in the embodiment of the present application, for example, the method flow shown in fig. 2. The processor 601 executes various functional applications and data processing by executing nonvolatile software programs, instructions, and modules stored in the memory 602, that is, implements the battery system control method in the above-described embodiments.
The memory 602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the battery system control method, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 602 may optionally include memory located remotely from the processor 601, which may be connected over a network to a device that performs the battery system control method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 may receive input of user clicks and generate signal inputs related to user settings and function control of the battery system control method. The display device 604 may include a display screen or the like.
The battery system control method of any of the above method embodiments is performed when the one or more modules are stored in the memory 602 and executed by the one or more processors 601.
According to the invention, different voltages are switched and output by the voltage switching battery pack, so that the voltage switching battery pack can supply power for the main voltage and the secondary voltage, and the total requirement of the cell capacity is reduced. Meanwhile, the electric cores are unified into one type, so that the energy loss caused by the adoption of various electric cores in the prior art is avoided, the energy utilization rate is improved, and the distribution requirements can be reduced due to the centralized arrangement of the electric cores.
An embodiment of the present invention provides a storage medium storing computer instructions for performing all the steps of the battery system control method as described above when a computer executes the computer instructions.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A battery system for a hybrid vehicle, comprising: the voltage switching circuit comprises a main voltage output end (1), a first secondary voltage output end (2), a second secondary voltage output end (3), a secondary voltage output battery pack (4), a voltage switching battery pack (5) and a controller, wherein the first secondary voltage output end (2) is connected with the second secondary voltage output end (3) in parallel, the first secondary voltage output end (2) is grounded through the secondary voltage output battery pack (4), the first secondary voltage output end (2) outputs secondary voltage, the main voltage output end (1) and the second secondary voltage output end (3) are respectively and electrically connected with the voltage switching battery pack (5), and the controller controls the voltage switching battery pack (5) to be switched between a main voltage output state and a secondary voltage output state;
when the voltage switching battery pack (5) is in a main voltage output state, the main voltage output end (1) outputs main voltage, and the second voltage output end (3) does not output voltage;
when the voltage switching battery pack (5) is in a secondary voltage output state, the secondary voltage output end (3) outputs secondary voltage, and the main voltage output end (1) does not output voltage.
2. The battery system of a hybrid vehicle according to claim 1, characterized in that the voltage-switching battery pack (5) comprises a first branch (51) and one or more second branches (52), the first branch (51) being electrically connected to the primary voltage output (1), the second branch (52) being electrically connected to the secondary voltage output (3);
when the voltage switching battery pack (5) is in a main voltage output state, the first branch circuit (51) is connected with one or more second branch circuits (52) in series, the main voltage output end (1) outputs series voltage, and the second secondary voltage output end (3) does not output voltage;
when the voltage switching battery pack (5) is in a secondary voltage output state, the first branch (51) is disconnected, the main voltage output end (1) has no output, the second branches (52) are connected in parallel, or one second branch (52) is electrically connected with the second secondary voltage output end (3), and the second secondary voltage output end (3) outputs the voltage of the second branch (52).
3. The battery system of the hybrid vehicle according to claim 2, wherein the first branch (51) comprises a first battery pack (53), each of the second branches (52) comprises a second battery pack (54) and a second switch connected in series, and a plurality of the second battery packs (54) or the first battery pack (53) and the second battery pack (54) are connected in series through the first switch;
the first switch is closed, the second switch is opened, and the voltage switching battery pack (5) is switched to a main voltage output state;
the first switch is opened, the second switch is closed, and the voltage switching battery pack (5) is switched to a secondary voltage output state.
4. A battery system control method of a battery system of a hybrid vehicle according to any one of claims 1 to 3, characterized by comprising:
acquiring a vehicle state;
and controlling the voltage switching battery pack (5) to be switched into a main voltage output state or a secondary voltage output state according to the vehicle state.
5. The battery system control method according to claim 4, wherein the controlling of the voltage-switching battery pack (5) to switch to a primary voltage output state or a secondary voltage output state according to a vehicle state specifically includes:
and when the vehicle is in a non-driving state, controlling the voltage switching battery pack (5) to switch to a secondary voltage output state.
6. The battery system control method according to claim 5, wherein the controlling of the voltage-switching battery pack (5) to switch to a primary voltage output state or a secondary voltage output state according to a vehicle state further includes
When the vehicle is in a running state, the voltage-switching battery pack (5) is controlled to switch to a primary voltage output state or a secondary voltage output state depending on whether the vehicle has a failure.
7. The battery system control method according to claim 6, wherein said controlling the voltage-switching battery pack (5) to switch to the primary voltage output state or the secondary voltage output state depending on whether there is a failure in the vehicle while the vehicle is in the running state, specifically comprises:
when the vehicle is in a running state, if the vehicle has a fault, the voltage switching battery pack (5) is controlled to be switched to a secondary voltage output state, and if the vehicle has no fault, the voltage switching battery pack (5) is controlled to be switched to a primary voltage output state.
8. The battery system control method according to claim 7, wherein the failure includes: generator failure, first voltage output failure.
9. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to at least one of the processors; wherein the content of the first and second substances,
the memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the battery system control method of any one of claims 1 to 8.
10. A storage medium storing computer instructions for performing all the steps of the battery system control method according to any one of claims 1 to 8 when the computer instructions are executed by a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637983.6A CN114261272A (en) | 2021-12-29 | 2021-12-29 | Battery system, control method, electronic device, and storage medium for hybrid vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637983.6A CN114261272A (en) | 2021-12-29 | 2021-12-29 | Battery system, control method, electronic device, and storage medium for hybrid vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114261272A true CN114261272A (en) | 2022-04-01 |
Family
ID=80831531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111637983.6A Pending CN114261272A (en) | 2021-12-29 | 2021-12-29 | Battery system, control method, electronic device, and storage medium for hybrid vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114261272A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498801U (en) * | 1991-01-23 | 1992-08-26 | ||
| JPH06261420A (en) * | 1993-03-08 | 1994-09-16 | Mitsubishi Electric Corp | Hybrid electric automobile |
| JP2001197606A (en) * | 2000-01-06 | 2001-07-19 | Yanmar Diesel Engine Co Ltd | Power supply switching device for traveling vehicle |
| JP2003092805A (en) * | 2001-09-20 | 2003-03-28 | Sanyo Electric Co Ltd | Power supply unit for hybrid car |
| JP2004120881A (en) * | 2002-09-25 | 2004-04-15 | Daiwa House Ind Co Ltd | Storage system for generator with changing output voltage |
| JP2004215449A (en) * | 2003-01-08 | 2004-07-29 | Suzuki Motor Corp | Electric power controller for vehicle |
| US20060250902A1 (en) * | 2005-05-05 | 2006-11-09 | Afs Trinity Power Corporation | Plug-in hybrid vehicle with fast energy storage |
| JP2009017657A (en) * | 2007-07-03 | 2009-01-22 | Sanyo Electric Co Ltd | Power supply system for vehicle |
| CN107963040A (en) * | 2016-10-20 | 2018-04-27 | 罗伯特·博世有限公司 | Battery apparatus, operation method and vehicle for battery apparatus |
-
2021
- 2021-12-29 CN CN202111637983.6A patent/CN114261272A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498801U (en) * | 1991-01-23 | 1992-08-26 | ||
| JPH06261420A (en) * | 1993-03-08 | 1994-09-16 | Mitsubishi Electric Corp | Hybrid electric automobile |
| JP2001197606A (en) * | 2000-01-06 | 2001-07-19 | Yanmar Diesel Engine Co Ltd | Power supply switching device for traveling vehicle |
| JP2003092805A (en) * | 2001-09-20 | 2003-03-28 | Sanyo Electric Co Ltd | Power supply unit for hybrid car |
| JP2004120881A (en) * | 2002-09-25 | 2004-04-15 | Daiwa House Ind Co Ltd | Storage system for generator with changing output voltage |
| JP2004215449A (en) * | 2003-01-08 | 2004-07-29 | Suzuki Motor Corp | Electric power controller for vehicle |
| US20060250902A1 (en) * | 2005-05-05 | 2006-11-09 | Afs Trinity Power Corporation | Plug-in hybrid vehicle with fast energy storage |
| JP2009017657A (en) * | 2007-07-03 | 2009-01-22 | Sanyo Electric Co Ltd | Power supply system for vehicle |
| CN107963040A (en) * | 2016-10-20 | 2018-04-27 | 罗伯特·博世有限公司 | Battery apparatus, operation method and vehicle for battery apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104972886B (en) | Electric power system of hybrid vehicle | |
| CN106740206B (en) | Quick-changing method and system for battery pack of electric vehicle | |
| US6670788B2 (en) | Method and apparatus for maximizing hybrid vehicle energy management | |
| KR20170065741A (en) | Method and system of controlling vehicle electric power for jump start | |
| JP2018125947A (en) | Electrical power system | |
| CN207972603U (en) | A kind of double electric network compositions of the light-duty hybrid power system based on BSG | |
| CN105246734A (en) | Method and arrangement for operating a hybrid electrical vehicle | |
| JP2022525825A (en) | Battery pack management system, battery pack, vehicle and management method | |
| CN105034991A (en) | Vehicle power grid and method for operating the vehicle power grid | |
| JP6560713B2 (en) | Vehicle power supply | |
| CN104908604B (en) | Onboard network | |
| CN111746308B (en) | Electric power system and control method thereof | |
| JP2020100259A (en) | Power supply device for vehicle | |
| JP6396604B2 (en) | VEHICLE POWER SUPPLY DEVICE, VEHICLE POWER SUPPLY SYSTEM, AND CONTROL METHOD FOR VEHICLE POWER SUPPLY DEVICE | |
| CN114261272A (en) | Battery system, control method, electronic device, and storage medium for hybrid vehicle | |
| JPH0424758Y2 (en) | ||
| JP6724675B2 (en) | Switch control device, power supply unit and power supply system | |
| CN115649091A (en) | High-low pressure energy distribution method, system, equipment and medium for automatic driving automobile | |
| US11349326B2 (en) | Electrical energy storage system and method for operating same | |
| DE102014201354A1 (en) | board network | |
| CN115320377A (en) | Power system for vehicle | |
| JP2018068074A (en) | Power supply device | |
| JP2020174505A (en) | Power supply control device | |
| KR20200001784A (en) | Dual Battery Control Device Using Lithium Battery and Lead Acid Battery and Method Thereof | |
| TWI769477B (en) | Driving porwer generation system of multi-voltage energy storage device |
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 |