CN114161931A - New energy vehicle type storage battery electricity supplementing control method - Google Patents
New energy vehicle type storage battery electricity supplementing control method Download PDFInfo
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- 230000005611 electricity Effects 0.000 title claims abstract description 24
- 239000013589 supplement Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000007958 sleep Effects 0.000 claims description 5
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- 238000001514 detection method Methods 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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Abstract
The invention discloses a new energy vehicle type storage battery power-on control method, which belongs to the technical field of storage batteries of electric vehicles and specifically comprises the following steps: detecting the SOC value of the storage battery EBS; when the gateway control unit detects that the SOC value is in a power shortage state, the CAN network is awakened, and a power supplement request is sent to the whole vehicle control unit; after receiving the power supplementing request, the vehicle control unit judges whether the power supplementing condition is met, if so, the high-voltage power is supplied to supplement power for the storage battery, and a power supplementing signal is fed back to the gateway control unit; after receiving the electricity supplementing signal, the gateway control unit starts to detect the SOC value of the storage battery and starts electricity supplementing timing; and judging the power supply termination condition in real time in the power supply process, and stopping power supply when the power supply termination condition is met. According to the power supplementing method, when the electric quantity of the storage battery is low, the storage battery is supplemented through an automatic high-voltage power-on mode, the low voltage is not powered on, and the power shortage of the storage battery caused by the cost limiting factor of the whole vehicle or the software and hardware limiting factor of the controller can be avoided.
Description
Technical Field
The invention belongs to the technical field of storage batteries of electric vehicles, and particularly relates to a new energy vehicle type storage battery power supply control method.
Background
With the continuous development of networking and intellectualization in the automobile industry, the types of electric appliances on automobiles are increasing day by day. When the whole vehicle architecture is designed, strict requirements on static current and reasonable formulation of network management logic are very important.
CN213948356U discloses an intelligent power supply system for a new energy automobile storage battery, which comprises a storage battery terminal voltage detection module, a control unit, a high-voltage control module, a VCU, a BMS and a DCDC module, wherein the storage battery terminal voltage detection module is used for detecting terminal voltage data of the storage battery, the output end of the storage battery terminal voltage detection module is connected with the control unit, the control unit is connected with the high-voltage control module, and the high-voltage control module is respectively connected with the VCU, the BMS and the DCDC conversion module and is used for awakening the VCU, the BMS and the DCDC module to work; the VCU is used for controlling the operation of the DCDC module, the input end of the DCDC module is connected to the output end of the power battery pack, and the output end of the DCDC module is connected to the storage battery; the BMS is connected with the VCU and used for driving the main relay of the power battery pack to be closed or opened according to the control signal of the VCU. The power supply system of this patent, its focus is on increasing voltage detection module and the control unit in the battery end, has increased to whole car cost.
CN112918320A discloses a method and a system for supplementing power to a low-voltage battery of an electric new energy vehicle, the method includes: when the electric vehicle is in an all-vehicle-OFF (IG-OFF) state, a vehicle networking controller (TBOX) starts timing and detects a start state of the electric vehicle; and when detecting that the duration of the electric vehicle in an all-vehicle-OFF (IG-OFF) state exceeds a time threshold, the internet control unit (TBOX) wakes up the Vehicle Control Unit (VCU), the power battery management controller (BMS), the high-voltage direct current to low-voltage direct current controller (DCDC), and the Body Controller (BCM); when a Vehicle Control Unit (VCU) is awakened, the VCU sends a high-voltage power-on command to a power battery management controller (BMS) and sends a starting command to a high-voltage direct-current to low-voltage direct-current controller (DCDC) to supplement power for a low-voltage storage battery. The power supplementing method and system disclosed by the patent are mainly used for waking up a vehicle by adopting a vehicle networking controller (T-BOX) in a timing mode, so that the power supplementing operation is directly carried out, and the power consumption for waking up the whole vehicle when the power supplementing is not needed is not considered.
CN113352940A discloses a storage battery power supplementing method, system and vehicle, and the method comprises: the electric quantity accumulation calculation module detects the output current and the output voltage of the storage battery to be compensated and determines whether the storage battery to be compensated is in a power shortage state or not according to the output current and the output voltage of the storage battery to be compensated; when the storage battery to be compensated is in a power-lack state, the battery manager controls the direct-current relay to be attracted through the single channel so as to conduct a voltage conversion circuit comprising the power battery, the direct-current relay and the voltage converter; and the voltage converter converts the first voltage output by the power battery into a second voltage to supplement the power to the storage battery to be supplemented under the pull-in state of the direct current relay, wherein the first voltage is greater than the second voltage. According to the method, when the storage battery to be supplemented is supplemented with electricity, the energy consumption can be reduced, and the problem of high energy consumption when the storage battery is supplemented with electricity is solved. The method is characterized in that an electric quantity accumulation calculation module is added, and electricity supplementing operation is carried out through real-time calculation. Not only the cost of the whole vehicle is increased, but also the power shortage condition under the dormancy of the whole vehicle can not be solved.
Disclosure of Invention
In order to solve the problems that the cost of the whole vehicle is increased, the normal function of the whole vehicle is affected due to the power shortage condition in the dormancy of the whole vehicle and the like in the prior art, the invention provides a new energy vehicle type storage battery power supply control method.
The invention is realized by the following technical scheme:
a new energy vehicle type storage battery power supply control method specifically comprises the following steps:
the method comprises the following steps: detecting the SOC value of the storage battery EBS;
step two: when the gateway control unit detects that the SOC value is in a power shortage state, the CAN network is awakened, and a power supplement request is sent to the whole vehicle control unit;
step three: after receiving the power supplementing request, the vehicle control unit judges whether the power supplementing condition is met, if so, the high-voltage power supply is used for supplementing power to the storage battery, and feeds back a signal that the power supplementing state signal is in power supplementing or the power supplementing state signal is successful to the gateway control unit, if not, the power supplementing is not carried out, and feeds back the power supplementing state signal to the gateway control unit, which is failed;
step four: after receiving the signal that the power supply state signal is in power supply or the power supply state signal is successful, the gateway control unit starts to detect the SOC value of the storage battery and starts power supply timing; and judging the power supply termination condition in real time in the power supply process, and stopping power supply when the power supply termination condition is met.
Further, the first step is as follows: and after the CAN network of the whole vehicle is in sleep, the gateway control unit is self-awakened once every 5 hours, and the SOC value of the storage battery EBS is read.
Further, the first step is as follows: when the whole CAN network is in sleep, the instrument is adopted to time, the CAN network is awakened every 5 hours, and the gateway control unit is awakened and then reads the SOC of the storage battery EBS.
Further, the second step is as follows: when the gateway control unit detects that the SOC value is less than 65%, and the conditions that the vehicle is in a fortification state, the power supply mode is 'powermode 2 ═ Off' and the cabin cover is in a closed state are met, the CAN network is awakened, and a power supplement request is sent to the whole vehicle control unit.
Further, the power supply condition in the third step is specifically as follows:
(1) the charging gun is not connected;
(2) no high-voltage power-on prohibition fault exists;
(3) the SOC of the power battery is more than or equal to 10 percent;
(4) the vehicle is in a fortifying state
(5) "powermode 2 ═ Off";
(6) the cabin cover is in a closed state;
(7) the driver door is in a closed state;
if the above electricity supplementing conditions are met, the high-voltage electricity is supplemented to the storage battery, and an electricity supplementing state signal is fed back to the gateway control unit, namely in electricity supplementing.
Further, the power supply termination condition in the fourth step is specifically as follows:
(1) when the SOC of the storage battery is more than 90%, the power supply function of the gateway control unit is stopped, a non-charging request is sent corresponding to a signal position, and the whole vehicle enters a normal working condition;
(2) the timing is over 1 hour, even if the SOC of the storage battery is less than or equal to 90 percent, the power supply function of the gateway control unit is stopped, and a non-charging request is sent corresponding to a signal position;
(3) the gateway control unit stops timing when receiving any one of the following power supply interruption conditions, stops the power supply function, and sends a non-charging request corresponding to the signal position
(4) And if the gateway control unit receives the power supplementing state signal, the gateway control unit stops sending the power supplementing request.
Further, the power supply interruption condition is specifically as follows:
A. the vehicle is in an unprotected state;
B. a power supply mode; "powermode 2 ≠ Off";
C. the nacelle cover is not in a closed state.
Further, in the third step, when any one of the following conditions is met in the high-voltage power-on process or the power supplement process, the vehicle control unit actively performs high-voltage power-on, and feeds back a signal that the power supplement state signal is failed until the gateway control unit stops sending the power supplement request;
A. in the electricity supplementing process, the SOC of the power battery is less than 5 percent;
B. the whole vehicle has a fault causing high voltage reduction;
C. after the DCDC is enabled for 30 seconds, the DCDC does not work;
D. the power supplementing request sent by the gateway control unit is not received after a certain time;
E. receiving an alternating current charging wake-up signal;
F. receiving a direct current charging wake-up signal;
G. the vehicle is in an un-fortifying state;
H. a power supply mode; powermode2 ≠ Off or powermode2 ≠ Recently Off;
I. the cabin cover is in an open state;
J. the driver door is in an open state.
Compared with the prior art, the invention has the following advantages:
the invention provides a new energy vehicle type storage battery power supply control method, which is characterized in that when the electric quantity of a storage battery is low, the storage battery is supplied with power in an automatic high-voltage power supply mode, the low voltage is not powered, the power supply mode is not changed, a vehicle has no sensible appearance, and the power shortage of the storage battery caused by the cost limiting factor of the whole vehicle or the software and hardware limiting factor of a controller can be avoided.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a flowchart of a new energy vehicle type storage battery power-on control method of the invention.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Example 1
The power supply method is a local power supply method for supplying power to a storage battery by controlling the power-on of a Vehicle Control Unit (VCU) by a gateway control unit (GW). The power supplementing method comprises the management effectiveness of a whole vehicle network, the signal interaction between a gateway control unit and a whole vehicle control unit, the judgment logic of the gateway control unit on the working condition of the whole vehicle (information such as storage battery SOC, power supply mode and fortification state), the judgment logic of the whole vehicle control unit on the working condition of the whole vehicle (information such as power battery SOC, power supply mode, fortification state and charging gun state), and the content of abnormal condition treatment.
Specifically, as shown in fig. 1, the embodiment provides a method for controlling power supplement of a new energy vehicle type storage battery, which specifically includes the following steps:
the method comprises the following steps: after the CAN network of the whole vehicle sleeps, the gateway control unit is self-awakened once every 5 hours, and the SOC value of the storage battery EBS is read;
step two: when the gateway control unit detects that the SOC value is less than 65%, and the conditions that the vehicle is in a defense state, namely 'AntitheftSt ═ Engagement', a power supply mode, namely 'powermode 2 ═ Off', and a cabin cover is in a closed state are met, the gateway control unit wakes up the CAN network and sends a power supplement request to the whole vehicle control unit;
step three: after receiving the power supplementing request, the vehicle control unit judges whether the power supplementing condition is met, if so, the high-voltage power supply is used for supplementing power to the storage battery, and feeds back a signal that the power supplementing state signal is in power supplementing or the power supplementing state signal is successful to the gateway control unit, if not, the power supplementing is not carried out, and feeds back the power supplementing state signal to the gateway control unit, which is failed;
step three, the electricity supplementing condition is as follows:
(1) the charging gun is not connected;
(2) no high-voltage power-on prohibition fault exists;
(3) the SOC of the power battery is more than or equal to 10 percent;
(4) the vehicle is in a fortifying state
(5) "powermode 2 ═ Off";
(6) the cabin cover is in a closed state;
(7) the driver door is in a closed state;
if the above electricity supplementing conditions are met, the high-voltage electricity is supplemented to the storage battery, and an electricity supplementing state signal is fed back to the gateway control unit, namely in electricity supplementing.
When any one of the following conditions is met in the high-voltage power-on process or the power supplement process, the whole vehicle control unit actively carries out high-voltage power-on and feeds back a power supplement state signal which is a failure signal until the gateway control unit stops sending a power supplement request;
A. in the electricity supplementing process, the SOC of the power battery is less than 5 percent;
B. the whole vehicle has a fault causing high voltage reduction;
C. after the DCDC is enabled for 30 seconds, the DCDC does not work;
D. the power supplementing request sent by the gateway control unit is not received after a certain time;
E. receiving an alternating current charging wake-up signal;
F. receiving a direct current charging wake-up signal;
G. the vehicle is in an un-fortifying state; "AntitheftSt ≠ Engagnement";
H. a power supply mode; powermode2 ≠ Off or powermode2 ≠ Recently Off;
I. the cabin cover is in an open state;
J. the driver door is in an open state.
Step four: after receiving the signal that the power supply state signal is in power supply or the power supply state signal is successful, the gateway control unit starts to detect the SOC value of the storage battery and starts power supply timing; judging the power supply termination condition in real time in the power supply process, and stopping power supply when the power supply termination condition is met;
step four, the electricity supplementing termination conditions are as follows:
(1) when the SOC of the storage battery is more than 90%, the power supply function of the gateway control unit is stopped, a non-charging request is sent corresponding to a signal position, and the whole vehicle enters a normal working condition;
(2) the timing is over 1 hour, even if the SOC of the storage battery is less than or equal to 90 percent, the power supply function of the gateway control unit is stopped, and a non-charging request is sent corresponding to a signal position;
that is, "TBOX 2_ smallbatterchargerequest ═ No request";
(3) the gateway control unit stops timing when receiving any one of the following power supply interruption conditions, stops the power supply function and sends a non-charging request corresponding to the signal position;
that is, "TBOX 2_ smallbatterchargerequest ═ No request";
(4) and if the gateway control unit receives the power supplementing state signal, the gateway control unit stops sending the power supplementing request.
The power supply interruption condition is as follows:
A. the vehicle is in an unprotected state; "AntitheftSt ≠ Engagnement";
B. a power supply mode; "powermode 2 ≠ Off";
C. the nacelle cover is not in a closed state.
According to the control method for the power supplement of the new energy vehicle type storage battery, when the electric quantity of the storage battery is low, the storage battery is supplemented through an automatic high-voltage power-on mode, the low voltage is not powered on, the power supply mode is not changed, the vehicle has no sensible external performance, and the power shortage of the storage battery caused by the whole vehicle cost limiting factor or the controller software and hardware limiting factor can be avoided.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (8)
1. A new energy vehicle type storage battery power supply control method is characterized by comprising the following steps:
the method comprises the following steps: detecting the SOC value of the storage battery EBS;
step two: when the gateway control unit detects that the SOC value is in a power shortage state, the CAN network is awakened, and a power supplement request is sent to the whole vehicle control unit;
step three: after receiving the power supplementing request, the vehicle control unit judges whether the power supplementing condition is met, if so, the high-voltage power supply is used for supplementing power to the storage battery, and feeds back a signal that the power supplementing state signal is in power supplementing or the power supplementing state signal is successful to the gateway control unit, if not, the power supplementing is not carried out, and feeds back the power supplementing state signal to the gateway control unit, which is failed;
step four: after receiving the signal that the power supply state signal is in power supply or the power supply state signal is successful, the gateway control unit starts to detect the SOC value of the storage battery and starts power supply timing; and judging the power supply termination condition in real time in the power supply process, and stopping power supply when the power supply termination condition is met.
2. The method for controlling power supplement of the storage battery of the new energy vehicle type as claimed in claim 1, wherein the first step is as follows: and after the CAN network of the whole vehicle is in sleep, the gateway control unit is self-awakened once every 5 hours, and the SOC value of the storage battery EBS is read.
3. The method for controlling power supplement of the storage battery of the new energy vehicle type as claimed in claim 1, wherein the first step is as follows: when the whole CAN network is in sleep, the instrument is adopted to time, the CAN network is awakened every 5 hours, and the gateway control unit is awakened and then reads the SOC of the storage battery EBS.
4. The method for controlling power supplement of the new energy vehicle type storage battery according to claim 1, wherein the second step is as follows: when the gateway control unit detects that the SOC value is less than 65%, and the conditions that the vehicle is in a fortification state, the power supply mode is 'powermode 2 ═ Off' and the cabin cover is in a closed state are met, the CAN network is awakened, and a power supplement request is sent to the whole vehicle control unit.
5. The new energy vehicle type storage battery power supply control method according to claim 1, wherein the power supply conditions in the third step are as follows:
(1) the charging gun is not connected;
(2) no high-voltage power-on prohibition fault exists;
(3) the SOC of the power battery is more than or equal to 10 percent;
(4) the vehicle is in a fortifying state
(5) "powermode 2 ═ Off";
(6) the cabin cover is in a closed state;
(7) the driver door is in a closed state;
if the above electricity supplementing conditions are met, the high-voltage electricity is supplemented to the storage battery, and an electricity supplementing state signal is fed back to the gateway control unit, namely in electricity supplementing.
6. The new energy vehicle type storage battery power supply control method according to claim 1, wherein the power supply termination conditions in the fourth step are as follows:
(1) when the SOC of the storage battery is more than 90%, the power supply function of the gateway control unit is stopped, a non-charging request is sent corresponding to a signal position, and the whole vehicle enters a normal working condition;
(2) the timing is over 1 hour, even if the SOC of the storage battery is less than or equal to 90 percent, the power supply function of the gateway control unit is stopped, and a non-charging request is sent corresponding to a signal position;
(3) the gateway control unit stops timing when receiving any one of the following power supply interruption conditions, stops the power supply function, and sends a non-charging request corresponding to the signal position
(4) And if the gateway control unit receives the power supplementing state signal, the gateway control unit stops sending the power supplementing request.
7. The method for controlling power supplement of the new energy vehicle type storage battery according to claim 1, wherein the power supplement interruption condition is as follows:
A. the vehicle is in an unprotected state;
B. a power supply mode; "powermode 2 ≠ Off";
C. the nacelle cover is not in a closed state.
8. The new energy vehicle type storage battery power-supplementing control method according to claim 1, characterized in that in the third step, when any one of the following conditions is met in the high-voltage power-up process or the power-supplementing process, the entire vehicle control unit actively reduces the voltage under the high voltage and feeds back a signal of 'power-supplementing state signal is failed', until the gateway control unit stops sending the power-supplementing request;
A. in the electricity supplementing process, the SOC of the power battery is less than 5 percent;
B. the whole vehicle has a fault causing high voltage reduction;
C. after the DCDC is enabled for 30 seconds, the DCDC does not work;
D. the power supplementing request sent by the gateway control unit is not received after a certain time;
E. receiving an alternating current charging wake-up signal;
F. receiving a direct current charging wake-up signal;
powermode2 ≠ Off or powermode2 ≠ Recently Off;
G. the vehicle is in an un-fortifying state;
H. a power supply mode;
I. the cabin cover is in an open state;
J. the driver door is in an open state.
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| WO2023197501A1 (en) * | 2022-04-15 | 2023-10-19 | 合众新能源汽车股份有限公司 | Power-on control method and apparatus for electric vehicle, power-off control method and apparatus for electric vehicle, and related device |
| CN115257375A (en) * | 2022-06-20 | 2022-11-01 | 一汽奔腾轿车有限公司 | High-voltage power-on and power-off control method for pure electric vehicle |
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