CN114228646B - Electric supplementing system and method - Google Patents
Electric supplementing system and method Download PDFInfo
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- CN114228646B CN114228646B CN202111582715.9A CN202111582715A CN114228646B CN 114228646 B CN114228646 B CN 114228646B CN 202111582715 A CN202111582715 A CN 202111582715A CN 114228646 B CN114228646 B CN 114228646B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The embodiment of the invention provides a power supplementing system and method. The method comprises the following steps: the method comprises the steps that an external temperature sensor detects the external temperature of a vehicle, a first message is generated according to the external temperature of the vehicle, the first message comprises the external temperature of the vehicle, and the first message is sent to a BCM; the BCM judges whether the temperature outside the vehicle is less than a temperature threshold value; if the BCM judges that the temperature outside the vehicle is smaller than the temperature threshold value, a first handshake signal is generated, and the first handshake signal is sent to the temperature sensor outside the vehicle; the off-board temperature sensor responds to the first handshake signal, generates a second message and sends the second message to the high-voltage battery pack; and the high-voltage power supply Chi Baore receives the second message in the set time period, and responds to the second message and the power supply signal to supply power to the low-voltage storage battery or supply power to the storage battery according to the first set time period so as to supply the electric quantity of the low-voltage storage battery to a preset SOC value. The embodiment of the invention reduces the power shortage risk of the low-voltage storage battery.
Description
[ field of technology ]
The invention relates to the field of automobile batteries, in particular to an electric power supplementing system and method.
[ background Art ]
The low-voltage storage battery is a low-voltage power supply of the whole vehicle and is used for supplying the whole vehicle with static current when the whole vehicle stands still, and supplying power to low-voltage electric appliances, control chips of components and communication devices of the whole vehicle under extreme conditions. Due to factors such as arrangement space, weight, cost and the like of the whole vehicle, the battery capacity of the low-voltage storage battery of the electric vehicle is smaller than that of the low-voltage storage battery of the fuel vehicle. Therefore, if the whole vehicle stands for a long time, the low-voltage storage battery can not be supplied for a long time due to the electricity quantity, and the electricity deficiency and even the electricity quantity exhaustion occur. The low-voltage storage battery can cause that the whole vehicle cannot be started, the low-voltage storage battery is deeply vulcanized, so that the charging and discharging capacity is weakened, and the battery management system cannot work normally.
In order to solve the problem of power shortage of the low-voltage storage battery, the current common mode is as follows: the low-voltage storage battery is charged at regular time; or, the voltage of the low-voltage storage battery and the State of Charge (SOC) value of the battery are collected at fixed time, and whether the low-voltage storage battery needs to be charged or not is judged according to the voltage and the SOC value of the low-voltage storage battery. However, since the charging capacity in the north of winter is weak, the electric quantity of the low-voltage storage battery cannot be supplied to an ideal state within a prescribed time, and therefore, the low-voltage storage battery is liable to be depleted.
[ invention ]
In view of the above, the embodiments of the present invention provide a power supplementing system and method for solving the problem that the low-voltage battery in the prior art is easy to lose power.
In one aspect, an embodiment of the present invention provides a method for supplementing electricity, where the method is based on an electrical supplementing system, and the system includes: an external temperature sensor, a body controller BCM, a high-voltage battery pack and a low-voltage storage battery:
the external temperature sensor detects the external temperature of the vehicle, generates a first message according to the external temperature of the vehicle, wherein the first message comprises the external temperature of the vehicle and sends the first message to the BCM;
the BCM judges whether the temperature outside the vehicle is less than a temperature threshold;
if the BCM judges that the temperature outside the vehicle is smaller than a temperature threshold value, a first handshake signal is generated, and the first handshake signal is sent to the temperature sensor outside the vehicle;
the off-board temperature sensor responds to the first handshake signal, generates a second message and sends the second message to a high-voltage battery pack;
and if the high-voltage power supply Chi Baore receives the second message within the set time period, responding to the second message and the power supply signal, and performing power supply on the low-voltage storage battery or on the low-voltage storage battery according to a first set time period so as to supply the electric quantity of the low-voltage storage battery to a state of charge (SOC) value of a preset battery.
Optionally, the system further includes a vehicle controller VCU, and the method further includes:
the method comprises the steps that when the high-voltage battery pack starts to supplement power to the low-voltage battery, a first notification signal is sent to the VCU, wherein the first notification signal comprises a first set duration;
the VCU starts to time to obtain a first time duration in response to the first notification signal, and when the first time duration reaches the first set time duration, the lower high voltage of the whole vehicle is controlled; or the VCU responds to the received sixth message and controls the lower high voltage of the whole vehicle.
Optionally, the system further comprises a VCU and a battery sensor EBS, and the method further comprises:
if the BCM determines that the temperature outside the vehicle is greater than or equal to a temperature threshold, the high-voltage power supply Chi Baore does not receive the second message within the set time period, and responds to the power supply signal to supply power to the low-voltage storage battery or to supply power to the low-voltage storage battery according to a second set time period so as to supply the electric quantity of the low-voltage storage battery to the preset SOC value, and the high-voltage battery pack sends the second notification signal to the VCU when starting to supply power to the low-voltage storage battery, wherein the second notification signal includes the second set time period;
and the VCU starts to time to obtain the second time duration in response to the second notification signal, and controls the whole vehicle to be under high voltage when the second time duration reaches the second set time duration, or receives the sixth message sent by the EBS to control the whole vehicle to be under high voltage.
Optionally, after the controlling the high pressure of the whole vehicle, the method further includes:
the VCU generates a sleep signal and sends the sleep signal to the BCM;
the BCM responds to the sleep signal, controls the whole vehicle to enter the sleep state, generates a fifth message and sends the fifth message to the EBS;
and the EBS responds to the fifth message and enters the sleep state.
Optionally, the system further comprises a whole vehicle controller VCU;
the method further comprises the steps of:
the VCU judges whether the whole vehicle can be subjected to high voltage;
if the VCU judges that the whole vehicle can be subjected to high voltage, generating a supplementary electric signal and sending the supplementary electric signal to the high-voltage battery pack, and generating a high-voltage normal signal and sending the high-voltage normal signal to the outside-vehicle temperature sensor;
and the step of responding to the high-voltage normal signal by the outside temperature sensor, executing the outside temperature detection by the outside temperature sensor, generating a first message according to the outside temperature, and sending the first message to the BCM.
Optionally, if the VCU determines that the whole vehicle cannot be put on high voltage, generating a high voltage abnormal signal, and sending the high voltage abnormal signal to the BCM;
and the BCM responds to the high-voltage abnormal signal to control the whole vehicle to enter a sleep state.
Optionally, the system further comprises an EBS;
before the VCU determines whether the whole vehicle can be put on high voltage, the method further includes:
the EBS wakes up itself in response to a gear correct signal, detects battery parameters, generates a third message according to the battery parameters, the third message comprises the battery parameters, and sends the third message to the BCM;
the BCM judges whether the battery parameters meet a power-up triggering condition or not;
if the BCM judges that the related parameters meet the power-on triggering condition, generating a second handshake signal and sending the second handshake signal to the EBS;
the EBS responds to the second handshake signal, generates a fourth message and sends the fourth message to the BCM;
and the BCM wakes up itself and wakes up the whole vehicle network in response to the fourth message.
In another aspect, an embodiment of the present invention provides an electrical power supplementing system including: an off-board temperature sensor, a BCM, a high-voltage battery pack and a low-voltage battery;
the external temperature sensor is used for detecting the external temperature of the vehicle, generating a first message according to the external temperature of the vehicle, wherein the first message comprises the external temperature of the vehicle and sending the first message to the BCM;
the BCM is used for judging whether the temperature outside the vehicle is less than a temperature threshold value, if so, generating a first handshaking signal and sending the first handshaking signal to the temperature sensor outside the vehicle;
the off-board temperature sensor is further configured to generate a second message in response to the first handshake signal, and send the second message to a high-voltage battery pack;
and the high-voltage battery pack is used for responding to the second message and the electric supplementing signal if the second message is received in the set time period, and supplementing the low-voltage storage battery or supplementing the low-voltage storage battery according to the first set time length so as to supplement the electric quantity of the low-voltage storage battery to a preset SOC value.
Optionally, the power supplementing system further includes: VCU;
the VCU is used for judging whether the whole vehicle can be subjected to high voltage or not, generating a supplementary electric signal and sending the supplementary electric signal to the high-voltage battery pack, and generating a high-voltage normal signal and sending the high-voltage normal signal to the outside-vehicle temperature sensor if the whole vehicle is judged to be subjected to high voltage;
the external temperature sensor is further configured to respond to the high-voltage normal signal, execute the external temperature sensor to detect the external temperature of the vehicle, generate a first message according to the external temperature of the vehicle, and send the first message to the BCM.
Optionally, the power supplementing system further includes: an EBS;
the EBS is used for responding to a gear correct signal, waking up the EBS, detecting battery parameters, generating a third message according to the battery parameters, wherein the third message comprises the battery parameters, and sending the third message to the BCM;
the BCM is also used for judging whether the battery parameters meet the power-on triggering condition; if the related parameters are judged to meet the power-on triggering condition, generating a second handshake signal, and sending the second handshake signal to the EBS;
the EBS is further configured to generate a fourth packet in response to the second handshake signal, and send the fourth packet to the BCM;
the BCM is further used for waking up itself and waking up the whole vehicle network in response to the fourth message.
In the technical scheme provided by the embodiment, the external temperature sensor detects the external temperature of the vehicle, generates a first message according to the external temperature of the vehicle, sends the first message to the BCM, the BCM responds to the first message to judge whether the external temperature of the vehicle is smaller than a set value, if judging that the external temperature of the vehicle is smaller than the set value, generates a first handshake signal, sends the first handshake signal to the external temperature sensor, the external temperature sensor responds to the first handshake signal, generates a second message, sends the second message to a high-voltage battery pack, and the high-voltage battery pack responds to the second message to supplement electricity to the low-voltage battery in a first set time period, so that the risk of low-voltage battery power shortage is reduced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a power supplementing method according to an embodiment of the present invention
[ detailed description ] of the invention
For a better understanding of the technical solution of the present invention, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe numbers and the like in embodiments of the present invention, these numbers should not be limited to these terms. These terms are only used to distinguish one number from another. For example, a first number may also be referred to as a second number, and similarly, a second number may also be referred to as a first number, without departing from the scope of embodiments of the present invention.
Depending on the context, the word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to detection". Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
Fig. 1 is a schematic structural diagram of a supplementing system according to an embodiment of the present invention, as shown in fig. 1, the system includes: an off-vehicle temperature sensor 1, a body controller (body control module, BCM for short) 2, a high-voltage battery pack 3 and a low-voltage battery 4.
The outside temperature sensor 1 is connected with the BCM 2, the outside temperature sensor 1 is connected with the high-voltage battery pack 3, and the high-voltage battery pack 3 is connected with the low-voltage storage battery 4. The external temperature sensor 1 is configured to detect an external temperature of a vehicle, generate a first message according to the external temperature of the vehicle, where the first message includes the external temperature of the vehicle, and send the first message to the BCM 2. The BCM 2 is used for judging whether the temperature outside the vehicle is less than a temperature threshold value or not; if the temperature outside the vehicle is judged to be smaller than the temperature threshold value, a first handshake signal is generated, and the first handshake signal is sent to the temperature sensor 1 outside the vehicle. The off-board temperature sensor 1 is further configured to generate a second message in response to the first handshake signal, and send the second message to the high-voltage battery pack 3. The high-voltage battery pack 3 is configured to, if the second message is received within the set period of time, respond to the second message and the power-up signal, and perform power-up on the low-voltage storage battery 4 or perform power-up on the low-voltage storage battery 4 according to a first set period of time so as to supplement the electric quantity of the low-voltage storage battery 4 to a preset SOC value.
The system further comprises: the whole vehicle controller (Vehicle Control Unit, VCU for short) 5.
VCU 5 is connected to BCM 2, and VCU 5 is connected to high-voltage battery pack 3. The VCU 5 is configured to determine whether the whole vehicle can be subjected to high voltage, and if it is determined that the whole vehicle can be subjected to high voltage, generate a complementary electrical signal and send the complementary electrical signal to the high-voltage battery pack 3, and generate a high-voltage normal signal and send the high-voltage normal signal to the external temperature sensor 1. The external temperature sensor 1 is further configured to respond to the high-voltage normal signal, and perform the steps of detecting the external temperature of the vehicle by the external temperature sensor 1, generating a first message according to the external temperature of the vehicle, and sending the first message to the BCM 2.
The system further comprises: a battery sensor (Electronic Battery Sensor, abbreviated as EBS) 6.
The EBS 6 is connected to the BCM 2 via a LIN line, and the EBS 6 is connected to the VCU 5. The EBS 6 is configured to wake itself up in response to a gear correct signal, detect a battery parameter, generate a third message according to the battery parameter, where the third message includes the battery parameter, and send the third message to the BCM 2. The BCM 2 is also used for judging whether the battery parameters meet the power-up triggering condition or not; and if the related parameters are judged to meet the power-on triggering condition, generating a second handshake signal, and sending the second handshake signal to the EBS 6. The EBS 6 is further configured to generate a fourth packet in response to the second handshake signal, and send the fourth packet to the BCM 2. The BCM 2 is further configured to wake itself up and wake up the entire vehicle network in response to the fourth message.
The system further comprises: an air conditioner controller 7 and a gateway 8.
The temperature sensor 1 outside the vehicle is connected with the air conditioner controller 7 through a hard wire, the air conditioner controller 7 is connected with the gateway 8 through a BD CAN wire, and the gateway 8 is connected with the high-voltage battery pack 3 through a power bus. The off-vehicle temperature sensor 1 is specifically configured to generate a second message in response to the first handshake signal, and send the second message to the air conditioner controller 7. The air conditioner controller 7 is configured to send a second message to the gateway 8. The gateway 8 is used to send the second message to the high voltage battery pack 3.
In the embodiment of the present invention, the VCU 5 is further configured to generate a sleep signal, and send the sleep signal to the BCM 2. The BCM 2 is further configured to control the whole vehicle to enter the sleep state in response to the sleep signal, generate a fifth message, and send the fifth message to the EBS 6. The EBS 6 is further configured to enter the sleep state in response to a fifth packet.
In the embodiment of the present invention, the VCU 5 is further configured to determine whether the whole vehicle can be subjected to high voltage, and if the VCU 5 determines that the whole vehicle can be subjected to high voltage, generate a complementary electrical signal and send the complementary electrical signal to the high-voltage battery pack 3, and generate a high-voltage normal signal and send the high-voltage normal signal to the outside-vehicle temperature sensor 1. And the step of responding to the high-voltage normal signal by the outside temperature sensor 1, executing the steps of detecting the outside temperature of the vehicle by the outside temperature sensor 1, generating a first message according to the outside temperature of the vehicle, and sending the first message to the BCM 2.
In the embodiment of the present invention, the VCU 5 is further configured to generate a high-voltage abnormal signal if it is determined that the whole vehicle cannot be subjected to high voltage, and send the high-voltage abnormal signal to the BCM 2. The BCM 2 is also used for responding to the high-voltage abnormal signal and controlling the whole vehicle to enter a sleep state.
In the embodiment of the present invention, the EBS 6 is further configured to wake itself up in response to a gear correct signal, detect a battery parameter, generate a third message according to the battery parameter, where the third message includes the battery parameter, and send the third message to the BCM 2. The BCM 2 is further configured to determine whether the battery parameter meets a power-up triggering condition, and if the BCM 2 determines that the related parameter meets the power-up triggering condition, generate a second handshake signal, and send the second handshake signal to the EBS 6. The EBS 6 is further configured to generate a fourth packet in response to the second handshake signal, and send the fourth packet to the BCM 2. The BCM 2 is further configured to wake itself up and wake up the entire vehicle network in response to the fourth message.
In the technical scheme provided by the embodiment, the external temperature sensor detects the external temperature of the vehicle, generates a first message according to the external temperature of the vehicle, sends the first message to the BCM, the BCM responds to the first message to judge whether the external temperature of the vehicle is smaller than a set value, if the external temperature of the vehicle is judged to be smaller than the set value, generates a first handshake signal, sends the first handshake signal to the external temperature sensor, the external temperature sensor responds to the first handshake signal, generates a second message, sends the second message to the high-voltage battery pack, and the high-voltage battery pack responds to the second message to supplement electricity to the low-voltage battery in a first set time period, so that the problem of low-voltage battery power consumption caused by weak charging capability when the external temperature of the vehicle is low is solved.
The embodiment of the invention provides a power supplementing method which can be realized based on a power supplementing system. Fig. 2 is a flowchart of a power supplementing method according to an embodiment of the present invention, as shown in fig. 2, where the method includes:
step 101, the BCM judges whether the whole vehicle is in a flameout (off) gear, if so, the step 102 is executed; if not, the flow ends.
In the embodiment of the invention, if the BCM judges that the whole vehicle is in the off gear, the BCM indicates that the whole vehicle can enter a current compensation process, and step 102 is executed; if the BCM judges that the whole vehicle is not in the off gear, the BCM indicates that the whole vehicle cannot enter the power supply flow, and the flow is ended.
Step 102, the BCM generates a gear correct signal and sends the gear correct signal to the EBS.
In the embodiment of the invention, if the BCM detects that the whole vehicle is in the off gear, a gear correct signal is generated, and the gear correct signal is used for indicating that the whole vehicle is in the off gear.
Step 103, the EBS wakes up itself in response to the gear correct signal, detects the battery parameter, generates a third message according to the battery parameter, the third message includes the battery parameter, and sends the third message to the BCM.
In the embodiment of the invention, the EBS can wake up itself by itself, and after receiving a correct gear signal, the EBS wakes up itself at regular time and detects battery parameters, wherein the battery parameters comprise voltage and SOC value.
In the embodiment of the invention, the EBS sends the third message to the BCM via the local interconnect network (Local Interconnect Network, LIN).
In the embodiment of the invention, the EBS starts to continuously detect the battery parameter after waking up itself, and generates a sixth message and sends the sixth message to the VCU when detecting that the SOC value in the battery parameter is greater than or equal to the preset SOC value.
Step 104, the BCM judges whether the battery parameters meet the power-on triggering condition, if yes, step 106 is executed; if not, go to step 105.
In the embodiment of the invention, if the BCM judges that the battery parameter meets the power-up triggering condition, the BCM indicates that the low-voltage storage battery needs to be powered up, and the step 106 is executed; if the BCM determines that the battery parameter does not meet the power-up triggering condition, it indicates that the low-voltage battery does not need to be powered up, and step 105 is performed.
In the embodiment of the invention, the power-up triggering condition comprises that the voltage is smaller than a first set value and/or the SOC value is smaller than a second set value. Step 104 may specifically include: the BCM determines whether the voltage is smaller than a first set value or whether the SOC value is smaller than a second set value. If the BCM judges that the voltage is smaller than the first set value and/or the SOC value is smaller than the second set value, the BCM indicates that the low-voltage storage battery needs to be charged; and if the BCM judges that the voltage is greater than or equal to the first set value and the SOC value is greater than or equal to the second set value, the BCM indicates that the low-voltage storage battery does not need to be charged.
Step 105, the BCM controls the whole vehicle to enter a sleep state, and the process is ended.
Step 106, the BCM generates a second handshake signal and sends the second handshake signal to the EBS.
In the embodiment of the invention, if the BCM judges that the battery parameter meets the power-on triggering condition, a second handshake signal is generated according to the handshake protocol.
Step 107, the EBS responds to the second handshake signal to generate a fourth packet, and sends the fourth packet to the BCM.
In the embodiment of the invention, when the EBS receives the second handshake signal and the battery parameter is obtained to meet the power-up triggering condition through the second handshake signal, the low-voltage storage battery needs to be powered up, and the EBS generates the fourth message.
In the embodiment of the invention, the EBS sends the fourth message to the BCM via the LIN.
Step 108, the BCM wakes up itself and wakes up the whole vehicle network in response to the fourth message.
In the embodiment of the invention, the BCM can receive the message but can not send the message before waking up, and the BCM can receive the message or send the message after waking up. The whole vehicle network can receive the message but can not send the message before waking up, and the whole vehicle network can receive the message or send the message after waking up.
Step 109, the VCU judges whether the whole vehicle can be pressurized, if yes, step 110 is executed; if not, go to step 121.
In the embodiment of the invention, the whole vehicle network comprises the VCU, and the VCU is awakened after the BCM wakes up the whole vehicle network. And after the VCU is awakened, automatically judging whether the whole vehicle can be subjected to high voltage. If the VCU determines that the vehicle can be powered on at high voltage, indicating that the vehicle can normally perform power up, step 110 is executed; if the VCU determines that the vehicle cannot be powered up by high voltage, indicating that the vehicle cannot normally be powered up, step 121 is performed.
Step 110, the VCU generates a complementary electrical signal and sends the complementary electrical signal to the high voltage battery pack.
In the embodiment of the invention, when the VCU judges that the whole vehicle can be powered on at high voltage, a supplementary electric signal is generated, and the supplementary electric signal is used for indicating that the high-voltage battery pack can be ready for supplementing electricity.
And 111, generating a high-voltage normal signal by the VCU, and sending the high-voltage normal signal to an off-vehicle temperature sensor.
In the embodiment of the invention, when the VCU detects that the whole vehicle can normally go to high voltage, a high-voltage normal signal is generated, and the high-voltage normal signal is used for indicating that the whole vehicle can normally go to high voltage.
And 112, detecting the temperature outside the vehicle by the temperature sensor outside the vehicle in response to the high-voltage normal signal, generating a first message according to the temperature outside the vehicle, wherein the first message comprises the temperature outside the vehicle, and sending the first message to the BCM.
In the embodiment of the invention, the outside temperature sensor sends the first message to the BCM through the air conditioner controller. Specifically, the outside temperature sensor sends a first message to the air conditioner controller, and the air conditioner controller sends the first message to the BCM.
Step 113, the BCM judges whether the temperature outside the vehicle is less than the temperature threshold, if yes, step 114 is executed; if not, go to step 123.
In the embodiment of the present invention, if the BCM determines that the temperature outside the vehicle is less than the temperature threshold, it indicates that the electricity is supplemented by using the electricity supplementing method when the temperature outside the vehicle is less than the temperature threshold, and step 114 is executed; if the BCM determines that the temperature outside the vehicle is greater than or equal to the temperature threshold, it indicates that the electricity is supplemented by using the electricity supplementing method when the temperature outside the vehicle is greater than or equal to the temperature threshold, and step 123 is executed.
Step 114, the BCM generates a first handshake signal and sends the first handshake signal to the off-board temperature sensor.
In the embodiment of the invention, if the BCM judges that the temperature outside the vehicle is less than the temperature threshold, a first handshaking signal is generated according to a handshaking protocol.
And step 115, the off-board temperature sensor responds to the first handshaking signal to generate a second message, and the second message is sent to the high-voltage battery pack.
In the embodiment of the invention, the external temperature sensor receives the first handshake signal, and the external temperature of the vehicle is less than the temperature threshold value through the first handshake signal, so that the low-voltage storage battery needs to be charged, and the external temperature sensor generates the second message.
In the embodiment of the invention, the temperature sensor outside the vehicle sends the second message to the high-voltage battery pack through the air conditioner controller and the gateway.
In an embodiment of the present invention, step 115 may specifically include:
in step 1151, the off-vehicle temperature sensor responds to the first handshake signal to generate a second message, and sends the second message to the air conditioner controller.
Step 1152, the air conditioner controller sends a second message to the gateway.
In the embodiment of the invention, the air conditioner controller sends the second message to the gateway through a vehicle body controller local area network (Body Controller Area Network, BD CAN).
Step 1153, the gateway sends the second message to the high voltage battery pack.
In the embodiment of the invention, the gateway sends the second message to the high-voltage battery pack through the power bus.
And 116, receiving a second message by the high-voltage battery Chi Baore in a set time period, and responding to the second message and the electric supplementing signal, and supplementing electricity to the low-voltage battery or supplementing electricity to the low-voltage battery according to a first set time period to supplement the electric quantity of the low-voltage battery to a preset SOC value, wherein the high-voltage battery pack sends a first notification signal to the VCU when the low-voltage battery is started to be supplemented, the first notification signal comprises the first set time period, and the starting time point of the set time period is the time point when the high-voltage battery pack receives the electric supplementing signal.
In the embodiment of the invention, the first set time is 1.5 hours, and the preset SOC value is 95%.
In the embodiment of the invention, when the temperature outside the vehicle is relatively low in winter, the activity of the electrolyte of the low-voltage storage battery is low, the charge and discharge capacity of the low-voltage storage battery is also greatly reduced, the electric quantity requirement of the low-voltage storage battery is difficult to meet after 1 hour of electricity supplementing, the standing time of the whole vehicle can be kept to be shortened, and the whole vehicle can be frequently awakened to supplement electricity to the low-voltage battery. Frequent awakening of the whole vehicle increases the risk that the whole vehicle does not enter a sleep state, and if the whole vehicle does not enter the sleep state, the high-voltage battery pack can be powered down quickly. Therefore, the low-voltage storage battery is charged for 1.5 hours, the whole vehicle can be effectively prevented from being frequently awakened, and the risk that the high-voltage storage battery is not charged due to the fact that the whole vehicle is frequently awakened and does not enter a sleep state is reduced.
In the embodiment of the invention, the power is supplemented to the preset SOC value, so that the whole vehicle can be prevented from being frequently awakened, and the risk of the high-voltage battery pack failure caused by the fact that the whole vehicle is frequently awakened and does not enter a sleep state is reduced.
Step 117, the VCU starts to count time in response to the first notification signal to obtain a first count time, and controls the whole vehicle to get high voltage when the first count time reaches a first set time; or the VCU responds to the received sixth message and controls the lower high voltage of the whole vehicle.
In the embodiment of the invention, if the first timing time length reaches the first set time length, the high-voltage battery pack is indicated to complete power supply for the low-voltage storage battery according to the first set time length, and the VCU can control the whole vehicle to lower high voltage; if the VCU receives the sixth message sent by the EBS, it indicates that the high-voltage battery pack has already supplemented the electric quantity of the low-voltage battery to the preset SOC value, and the VCU may control the entire vehicle to lower the high voltage.
Step 118, the VCU generates a sleep signal and sends the sleep signal to the BCM.
In the embodiment of the invention, if the VCU controls the whole vehicle to lower high pressure, a sleep signal is generated, and the sleep signal is used for indicating that the whole vehicle has finished the high pressure.
And step 119, the BCM responds to the sleep signal, controls the whole vehicle to enter a sleep state, generates a fifth message and sends the fifth message to the EBS.
In the embodiment of the invention, the BCM sends the fifth message to the EBS via the LIN.
Step 120, the EBS enters a sleep state in response to the fifth message.
Step 121, the VCU generates a high voltage abnormality signal and sends the high voltage abnormality signal to the BCM.
In the embodiment of the invention, when the VCU detects that the whole vehicle cannot be subjected to high voltage, a high voltage abnormal signal is generated, and the high voltage abnormal signal is used for indicating that the whole vehicle cannot normally be subjected to high voltage.
And step 122, the BCM responds to the high-voltage abnormal signal to control the whole vehicle to enter a sleep state, and the process is ended.
In the embodiment of the invention, if the BCM receives the high-voltage abnormal signal, the whole vehicle does not enter the power supply flow any more.
Step 123, the high-voltage battery Chi Baore does not receive the second message within the set time period, and in response to the power-up signal, the low-voltage battery is powered up or the low-voltage battery is powered up according to the second set time period to supplement the electric quantity of the low-voltage battery to the preset SOC value, and the high-voltage battery pack sends a second notification signal to the VCU when the power-up of the low-voltage battery is started, where the second notification signal includes the second set time period.
In the embodiment of the invention, the second set time is 1 hour, and the preset SOC value is 95%.
And 124, starting timing by the VCU in response to the second notification signal to obtain a second timing duration, controlling the whole vehicle to lower high voltage when the second timing duration reaches a second set duration, or controlling the whole vehicle to lower high voltage by receiving a sixth message sent by the EBS, and executing step 118.
In the embodiment of the invention, if the second timing time length reaches the second set time length, the high-voltage battery pack is indicated to complete power supply for the low-voltage storage battery according to the second set time length, and the VCU can control the whole vehicle to lower high voltage; if the VCU receives the sixth message sent by the EBS, it indicates that the high-voltage battery pack has already supplemented the electric quantity of the low-voltage battery to the preset SOC value, and the VCU may control the entire vehicle to lower the high voltage.
In the embodiment of the invention, when the temperature outside the vehicle is relatively high in spring, summer and autumn, the activity of the electrolyte of the low-voltage storage battery is high, the SOC value can reach 95% in a relatively short time, even if the low-voltage storage battery is slightly vulcanized, the electric quantity requirement of the low-voltage storage battery can be met after 1 hour of power supply, the low-voltage storage battery is supplied with power once, and the whole vehicle can be kept to stand for half a month.
In the technical scheme provided by the embodiment, the external temperature sensor detects the external temperature of the vehicle, generates a first message according to the external temperature of the vehicle, sends the first message to the BCM, the BCM responds to the first message to judge whether the external temperature of the vehicle is smaller than a set value, if the external temperature of the vehicle is judged to be smaller than the set value, generates a first handshake signal, sends the first handshake signal to the external temperature sensor, the external temperature sensor responds to the first handshake signal, generates a second message, sends the second message to the high-voltage battery pack, and the high-voltage battery pack responds to the second message to supplement electricity to the low-voltage battery in a first set time period, so that the problem of low-voltage battery power consumption caused by weak charging capability when the external temperature of the vehicle is low is solved.
In the embodiment of the invention, the problem of low-voltage storage battery power shortage is solved, and the risk that the whole vehicle cannot be started can be reduced; the sulfuration of the low-voltage storage battery can be slowed down, the charge and discharge capacity of the low-voltage storage battery is maintained, and the frequency of replacing the low-voltage storage battery is reduced; the battery management system for supplying power to the low-voltage storage battery can work normally, and the complex condition that the low-voltage storage battery can be supplied with power only through an external power supply due to the fact that the high-voltage relay cannot be attracted is avoided.
According to the embodiment of the invention, the whole vehicle hardware cost is not required to be increased, the low-voltage storage battery power shortage risk can be reduced by only updating software, and the market competitiveness is improved.
According to the embodiment of the invention, the power consumption of about 150W can be saved by the power supplementing method, so that the whole vehicle is more energy-saving, the risk of low-voltage storage battery power shortage is reduced, the requirements of customers are met, and the market competitiveness is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (9)
1. A method of supplementing electricity, the method being based on an electrical supplementing system, the system comprising: an off-vehicle temperature sensor, a body controller BCM, a high-voltage battery pack, a low-voltage battery, a VCU and a battery sensor EBS:
the external temperature sensor detects the external temperature of the vehicle, generates a first message according to the external temperature of the vehicle, wherein the first message comprises the external temperature of the vehicle and sends the first message to the BCM;
the BCM judges whether the temperature outside the vehicle is less than a temperature threshold;
if the BCM judges that the temperature outside the vehicle is smaller than a temperature threshold value, a first handshake signal is generated, and the first handshake signal is sent to the temperature sensor outside the vehicle;
the off-board temperature sensor responds to the first handshake signal, generates a second message and sends the second message to a high-voltage battery pack;
the high-voltage power supply Chi Baore receives the second message in a set time period, and responds to the second message and a power supply signal to supply power to the low-voltage storage battery according to a first set time period;
if the BCM determines that the temperature outside the vehicle is greater than or equal to a temperature threshold, the high-voltage electricity Chi Baore does not receive the second message in the set time period, and responds to the electric supplementing signal to supplement electricity to the low-voltage storage battery according to a second set time period, and the high-voltage battery pack sends a second notification signal to the VCU when starting to supplement electricity to the low-voltage storage battery, wherein the second notification signal comprises the second set time period, and the second set time period is less than the first set time period;
and the VCU starts timing to obtain a second timing duration in response to the second notification signal, and controls the whole vehicle to be under high voltage when the second timing duration reaches the second set duration, or receives a sixth message sent by the EBS to control the whole vehicle to be under high voltage.
2. The method of claim 1, wherein the system further comprises a vehicle control unit VCU, the method further comprising:
the method comprises the steps that when the high-voltage battery pack starts to supplement power to the low-voltage battery, a first notification signal is sent to the VCU, wherein the first notification signal comprises a first set duration;
the VCU starts to time to obtain a first time duration in response to the first notification signal, and when the first time duration reaches the first set time duration, the lower high voltage of the whole vehicle is controlled; or the VCU responds to the received sixth message and controls the lower high voltage of the whole vehicle.
3. The method according to claim 1 or 2, characterized by further comprising, after said controlling the vehicle under high pressure:
the VCU generates a sleep signal and sends the sleep signal to the BCM;
the BCM responds to the sleep signal to control the whole vehicle to enter a sleep state, generates a fifth message and sends the fifth message to the EBS;
and the EBS responds to the fifth message and enters the sleep state.
4. The method of claim 1, wherein the system further comprises a vehicle control unit VCU;
the method further comprises the steps of:
the VCU judges whether the whole vehicle can be subjected to high voltage;
if the VCU judges that the whole vehicle can be subjected to high voltage, generating a supplementary electric signal and sending the supplementary electric signal to the high-voltage battery pack, and generating a high-voltage normal signal and sending the high-voltage normal signal to the outside-vehicle temperature sensor;
and the step of responding to the high-voltage normal signal by the outside temperature sensor, executing the outside temperature detection by the outside temperature sensor, generating a first message according to the outside temperature, and sending the first message to the BCM.
5. The method as recited in claim 4, further comprising:
if the VCU judges that the whole vehicle cannot bear high pressure, generating a high-pressure abnormal signal and sending the high-pressure abnormal signal to the BCM;
and the BCM responds to the high-voltage abnormal signal to control the whole vehicle to enter a sleep state.
6. The method of claim 4, wherein the system further comprises an EBS;
before the VCU determines whether the whole vehicle can be put on high voltage, the method further includes:
the EBS wakes up itself in response to a gear correct signal, detects battery parameters, generates a third message according to the battery parameters, the third message comprises the battery parameters, and sends the third message to the BCM;
the BCM judges whether the battery parameters meet a power-up triggering condition or not;
if the BCM judges that the battery parameter meets the power-on triggering condition, generating a second handshake signal and sending the second handshake signal to the EBS;
the EBS responds to the second handshake signal, generates a fourth message and sends the fourth message to the BCM;
and the BCM wakes up itself and wakes up the whole vehicle network in response to the fourth message.
7. An electrical system, comprising: an off-board temperature sensor, a BCM, a high-voltage battery pack, a low-voltage battery, a VCU and a battery sensor EBS;
the external temperature sensor is used for detecting the external temperature of the vehicle, generating a first message according to the external temperature of the vehicle, wherein the first message comprises the external temperature of the vehicle and sending the first message to the BCM;
the BCM is used for judging whether the temperature outside the vehicle is less than a temperature threshold value, if so, generating a first handshaking signal and sending the first handshaking signal to the temperature sensor outside the vehicle;
the off-board temperature sensor is further configured to generate a second message in response to the first handshake signal, and send the second message to a high-voltage battery pack;
the high-voltage battery pack is used for responding to the second message and the electric supplementing signal and supplementing electricity to the low-voltage battery according to a first set duration if the second message is received within a set time period;
the BCM is further configured to, if it is determined that the temperature outside the vehicle is greater than or equal to a temperature threshold, the high-voltage battery pack, and if the second packet is not received within the set period of time, respond to the power-up signal, perform power-up on the low-voltage battery according to a second set period of time, and send a second notification signal to the VCU when the pack starts power-up on the low-voltage battery, where the second notification signal includes the second set period of time, and the second set period of time is less than the first set period of time;
and the VCU is used for responding to the second notification signal to start timing to obtain a second timing duration, and controlling the whole vehicle to be under high voltage when the second timing duration reaches the second set duration, or controlling the whole vehicle to be under high voltage when a sixth message sent by the EBS is received.
8. The system of claim 7, further comprising: VCU;
the VCU is used for judging whether the whole vehicle can be subjected to high voltage or not, generating a supplementary electric signal and sending the supplementary electric signal to the high-voltage battery pack, and generating a high-voltage normal signal and sending the high-voltage normal signal to the outside-vehicle temperature sensor if the whole vehicle is judged to be subjected to high voltage;
the external temperature sensor is further configured to respond to the high-voltage normal signal, execute the external temperature sensor to detect the external temperature of the vehicle, generate a first message according to the external temperature of the vehicle, and send the first message to the BCM.
9. The system of claim 8, further comprising: an EBS;
the EBS is used for responding to a gear correct signal, waking up the EBS, detecting battery parameters, generating a third message according to the battery parameters, wherein the third message comprises the battery parameters, and sending the third message to the BCM;
the BCM is also used for judging whether the battery parameters meet the power-on triggering condition; if the battery parameter is judged to meet the power-on triggering condition, generating a second handshake signal, and sending the second handshake signal to the EBS;
the EBS is further configured to generate a fourth packet in response to the second handshake signal, and send the fourth packet to the BCM;
the BCM is further used for waking up itself and waking up the whole vehicle network in response to the fourth message.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103768A (en) * | 2019-04-23 | 2019-08-09 | 浙江合众新能源汽车有限公司 | A kind of electric car mends method for electrically and device automatically |
| CN112092626A (en) * | 2020-07-31 | 2020-12-18 | 东风商用车有限公司 | Remote monitoring protection method and system for low-voltage storage battery of electric vehicle |
| CN113572234A (en) * | 2021-07-30 | 2021-10-29 | 东风汽车有限公司东风日产乘用车公司 | Storage battery power-on control method, storage medium and electronic device |
| WO2021238987A1 (en) * | 2020-05-26 | 2021-12-02 | 长城汽车股份有限公司 | Storage battery charging method and system, and vehicle |
-
2021
- 2021-12-22 CN CN202111582715.9A patent/CN114228646B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103768A (en) * | 2019-04-23 | 2019-08-09 | 浙江合众新能源汽车有限公司 | A kind of electric car mends method for electrically and device automatically |
| WO2021238987A1 (en) * | 2020-05-26 | 2021-12-02 | 长城汽车股份有限公司 | Storage battery charging method and system, and vehicle |
| CN112092626A (en) * | 2020-07-31 | 2020-12-18 | 东风商用车有限公司 | Remote monitoring protection method and system for low-voltage storage battery of electric vehicle |
| CN113572234A (en) * | 2021-07-30 | 2021-10-29 | 东风汽车有限公司东风日产乘用车公司 | Storage battery power-on control method, storage medium and electronic device |
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