CN220053577U - Electric automobile mends electric installation and electric automobile - Google Patents
Electric automobile mends electric installation and electric automobile Download PDFInfo
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- CN220053577U CN220053577U CN202321283865.4U CN202321283865U CN220053577U CN 220053577 U CN220053577 U CN 220053577U CN 202321283865 U CN202321283865 U CN 202321283865U CN 220053577 U CN220053577 U CN 220053577U
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Abstract
The utility model discloses an electric automobile power supplementing device and an electric automobile. The device comprises: the storage battery sensor is used for monitoring the electric quantity of the storage battery; and the power system controller is used for receiving the electric quantity of the storage battery sent by the storage battery sensor after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value. The utility model can avoid the phenomenon that the whole vehicle is not dormant due to internal and external abnormal factors or the whole vehicle is deficient in power due to abnormal awakening with the awakening period within 50 minutes.
Description
Technical Field
The utility model relates to the technical field of automobile low-voltage power management control, in particular to an electric automobile power supply device and an electric automobile.
Background
The whole vehicle electrical appliance architecture tends to be complex, the constant electric controller is increased, and meanwhile, the probability of vehicle power shortage caused by the fact that the whole vehicle network is not dormant due to abnormal wake-up, self-failure or external environment interference and other abnormal factors of the controller is also greatly increased. When the whole vehicle network is abnormally awakened to network faults, and the awakening period is within 50 minutes, the power supplementing function cannot be triggered, and the whole vehicle continuously consumes the electric quantity of the storage battery, so that the vehicle is deficient in power. The current power supplementing mode can cope with abnormal awakening of normal situations and normal dormancy or awakening period of the whole vehicle over 50 minutes, but under abnormal situations, namely, the phenomenon that the whole vehicle cannot avoid power consumption caused by non-dormancy or abnormal awakening of the whole vehicle within 50 minutes due to internal and external abnormal factors, the situation that the power battery is full or the electric quantity is higher and the electric quantity of the storage battery is exhausted can occur.
Disclosure of Invention
In order to solve the technical problem that the whole vehicle cannot avoid the power shortage caused by abnormal wake-up of the whole vehicle within 50 minutes or not due to non-dormancy or wake-up period caused by internal and external abnormal factors under abnormal conditions, the embodiment of the utility model provides an electric vehicle power supplementing device and an electric vehicle.
The technical scheme of the embodiment of the utility model is realized as follows:
the embodiment of the utility model provides an electric automobile power supplementing device, which comprises: the storage battery sensor is used for monitoring the electric quantity of the storage battery; and the power system controller is used for receiving the electric quantity of the storage battery sent by the storage battery sensor after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value.
In one embodiment, the apparatus further comprises a body domain controller; the storage battery sensor is also used for measuring the electric quantity of the storage battery after the whole vehicle is dormant and the LIN signal is dormant for a target duration; sending a power-up request signal under the condition that the electric quantity of the storage battery is monitored to be lower than a target threshold value; the vehicle body domain controller is used for receiving the power supply request signal sent by the storage battery sensor and forwarding the power supply request signal to the power system controller; the power system controller is also used for starting intelligent power supply according to the power supply request signal.
In one embodiment, the apparatus further comprises a power battery management system and a dc converter; the power system controller is also used for judging whether the power supply condition is met before the intelligent power supply is started, and sending control signals to the power battery management system and the direct current converter under the condition that the power supply condition is judged to be met; the power battery management system is used for receiving the control signal sent by the power system controller and executing a high-voltage discharging function according to the control signal; and the direct current converter is used for receiving the control signal sent by the power system controller, converting the high voltage into the low voltage based on the control signal, and supplying power to the low-voltage load and charging the storage battery by using the converted voltage.
In an embodiment, the power system controller is further configured to determine whether the power battery power is greater than the target power, whether the power battery cell temperature is higher than the first temperature, whether the power battery cell temperature is lower than the second temperature, and whether the high voltage system self-check is fault-free; when the electric quantity of the power battery is judged to be larger than the target electric quantity, the temperature of the battery core of the power battery is higher than the first temperature, the temperature of the battery core of the power battery is lower than the second temperature, and the high-voltage system is self-checked and has no faults, judging that the power supplementing condition is met; wherein the first temperature is lower than the second temperature.
In one embodiment, the first temperature is minus 30 degrees celsius.
In one embodiment, the second temperature is 40 degrees celsius.
In an embodiment, the power system controller is further configured to start a timer of the power supply function when the intelligent power supply is started, and exit the intelligent power supply function when the timer reaches a preset time duration.
In an embodiment, the power system controller is further configured to send a power-up completion signal to the vehicle body domain controller after exiting the intelligent power-up function; the vehicle body domain controller is used for counting the times of the received power-supplementing completion signals, and sending a wake-up prohibition signal to the storage battery sensor when the times reach preset times.
In one embodiment, the preset number of times is 20.
The embodiment of the utility model also provides an electric automobile, which comprises a storage battery, a low-voltage load and the device of any one of the above.
The embodiment of the utility model provides an electric automobile power supplementing device and an electric automobile, wherein the device comprises: the storage battery sensor is used for monitoring the electric quantity of the storage battery; and the power system controller is used for receiving the electric quantity of the storage battery sent by the storage battery sensor after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value. The utility model can avoid the phenomenon that the whole vehicle is not dormant due to internal and external abnormal factors or the whole vehicle is deficient in power due to abnormal awakening with the awakening period within 50 minutes.
Drawings
FIG. 1 is a schematic diagram of a power supply device for an electric vehicle according to the present utility model;
FIG. 2 is a block diagram showing the overall connection of the power supplementing function of the new energy automobile;
FIG. 3 is a logic flow diagram of the power up function before optimization in accordance with the present utility model;
FIG. 4 is a logic flow diagram of the post-optimization power up function of the present utility model.
Reference numerals:
1 battery sensor IBS,2 body domain controller BDC,
3 power system controllers PCU,4 power battery management systems BMS,
5 direct current converter DCDC,6 battery,
the 8CAN bus, the 9LIN bus,
10 high voltage harness, 11 low voltage harness.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
The embodiment of the utility model provides an electric automobile power supplementing device, as shown in fig. 1, which comprises:
a battery sensor IBS for monitoring the battery power;
and the power system controller PCU is used for receiving the electric quantity of the storage battery sent by the storage battery sensor IBS after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value.
According to the embodiment, through optimizing the power supply mode triggering logic and the power supply times of the new energy automobile, the state of the storage battery is monitored in real time by means of the storage battery sensor IBS, and intelligent power supply is started once the electric quantity of the storage battery is monitored to be lower than a target threshold value, so that the problem that the whole automobile is not dormant due to internal and external abnormal factors or the whole automobile is in power shortage due to abnormal wake-up with a wake-up period within 50 minutes is solved.
That is, in this embodiment, by increasing the determination of the power system controller PCU to the battery power collection, the battery sensor IBS is not required to wake up to supplement power, so that the problem that the whole vehicle is not dormant or abnormally waken up, and when the wake-up period is within 50 minutes, the battery sensor cannot emit a wake-up flag bit with low power, and the flag bit is set to cause the whole vehicle to lose power can be solved.
In an embodiment, the apparatus further comprises a body domain controller BDC;
the storage battery sensor IBS is also used for measuring the electric quantity of the storage battery after the whole vehicle is dormant and the LIN signal is dormant for a target duration; sending a power-up request signal under the condition that the electric quantity of the storage battery is monitored to be lower than a target threshold value;
the vehicle body domain controller BDC is used for receiving the power-supplementing request signal sent by the storage battery sensor IBS and forwarding the power-supplementing request signal to the power system controller PCU;
the power system controller PCU is also used for starting intelligent power supply according to the power supply request signal.
Here, the target period may be 50 minutes. When the vehicle is powered down, the communication protocol defines that LIN communication between the vehicle body domain controller BDC and the storage battery sensor IBS is stopped within 10 seconds, then the storage battery sensor IBS starts to enter a low power consumption mode, the storage battery sensor IBS detects the electric quantity of the storage battery after the LIN is dormant for 50 minutes and judges, when the electric quantity of the storage battery is lower than a target threshold value, a low-level signal is actively sent to pull down the LIN bus, the main node, namely the vehicle body domain controller BDC, is awakened, LIN communication is started, meanwhile, the storage battery sensor IBS sends out a low-electric-quantity awakening flag bit, the flag bit is set, the signal is taken as a power-supplementing request signal of the vehicle, and the vehicle body domain controller BDC transmits the power-supplementing request signal to the CAN bus from the LIN bus to be awakened by the power system controller PCU. And when the power system controller PCU receives the power supply request signal, intelligent power supply is started.
In an embodiment, the apparatus further comprises a power battery management system BMS and a direct current converter DCDC;
the power system controller PCU is further used for judging whether the power supply condition is met before intelligent power supply is started, and sending control signals to the power battery management system BMS and the direct current converter DCDC under the condition that the power supply condition is judged to be met;
the power battery management system BMS is used for receiving the control signal sent by the power system controller PCU and executing a high-voltage discharging function according to the control signal;
and the DC converter DCDC is used for receiving the control signal sent by the power system controller PCU, converting the high voltage into the low voltage based on the control signal, and supplying power to the low-voltage load and charging the storage battery by using the converted voltage.
Specifically, the power system controller PCU is further configured to determine whether the power battery power is greater than the target power, whether the power battery cell temperature is higher than the first temperature, whether the power battery cell temperature is lower than the second temperature, and whether the high-voltage system self-checking is fault-free; when the electric quantity of the power battery is judged to be larger than the target electric quantity, the temperature of the battery core of the power battery is higher than the first temperature, the temperature of the battery core of the power battery is lower than the second temperature, and the high-voltage system is self-checked and has no faults, judging that the power supplementing condition is met; wherein the first temperature is lower than the second temperature.
Here, the first temperature may be minus 30 degrees celsius; the second temperature may be 40 degrees celsius.
Namely, when the power system controller PCU receives the power supplementing request signal, the power battery management system BMS is awakened through a hard wire to read the electric quantity and the temperature of the electric core, when the average temperature of the electric core is higher than 40 ℃, the power supplementing function is not executed, and when the average temperature is lower than-30 ℃, the power supplementing function is not executed. When the power system controller PCU judges that the electric quantity and the temperature of the power battery meet the design threshold value required by power supply, each controller of the high-voltage system starts to execute self-checking at the same time, and the power system controller PCU collects self-checking information fed back by each high-voltage controller. When the high-voltage system feedback self-check has no fault, the power system controller PCU controls the direct-current converter DCDC to charge at the target voltage.
In an embodiment, the power system controller PCU is further configured to start a timer of the power supply function when the intelligent power supply is started, and exit the intelligent power supply function when the timer reaches a preset time duration.
In addition, the power system controller PCU is also used for sending a power-supplementing completion signal to the vehicle body domain controller BDC after exiting the intelligent power-supplementing function; the vehicle body domain controller BDC is used for counting the times of the received power-up completion signals, and sending a wake-up prohibition signal to the storage battery sensor IBS when the times reach the preset times.
Here, the preset number of times may be 20 times.
That is, after the power system controller PCU supplements power, it starts to run the power supplement function timer and maintains network wakeup. When the power system controller PCU power-up timer is full, the high-voltage power-down flow is started, the power-up function is exited, and the power-up is completed through CAN bus feedback. The vehicle body domain controller BDC receives the power-up completion signal, counts once inside, and the whole vehicle controller does not send messages, and the network ring building is completed to complete the dormancy of the whole vehicle. When 20 times of power supplementing are completed, namely the internal count of the vehicle body domain controller BDC is full of 20 times, the vehicle body domain controller BDC sends a prohibition wakeup through the LIN bus, the storage battery sensor IBS does not perform low-SOC wakeup any more later, when the vehicle is powered on again, the vehicle body domain controller BDC clears the low-power wakeup count, and the vehicle body domain controller BDC sets a wakeup threshold value through the LIN bus again.
Next, the application of the present embodiment will be described in detail in a specific application scenario.
The embodiment provides an intelligent electricity supplementing mode for a new energy automobile. The embodiment optimizes the power-on triggering logic, the power-on times and the temperature range on the basis of the power-on mode of the low-voltage storage battery of the current new energy automobile so as to cope with the whole automobile power shortage caused by no dormancy or abnormal awakening with the awakening period within 50 minutes due to internal and external abnormal factors of the whole automobile under abnormal conditions. When the current electric quantity is detected to be low by the storage battery sensor after the vehicle is powered down, a power-up request signal is sent, the electric quantity of the current power battery and other conditions are judged after the high-voltage controller receives the signal, if the current electric quantity and other conditions are met, a high-voltage power-up function is executed, and when the preset power-up time is up, the high-voltage power-up is executed.
Specifically, referring to fig. 2, fig. 2 is a block diagram of the whole connection of the power supplementing function of the new energy automobile according to the present embodiment. The realization of the power supply function is realized by the following controllers on hardware: a battery, a battery sensor (IBS), a power Battery Management System (BMS), a body zone controller (BDC), a Powertrain Controller (PCU), a direct current converter (DCDC). The storage battery sensor needs to have an LIN bus active wake-up function, the scheme adopts a vehicle body domain controller as a main node of LIN communication, and an active wake-up threshold is set in a message mode, namely, when the LIN communication is carried out, BDC configures a low SOC wake-up threshold of the storage battery sensor through an active frame.
Wherein a battery sensor (IBS) for monitoring battery status and transmitting a LIN signal indicative of a power up request;
a vehicle Body Domain Controller (BDC) which is used for receiving the power-supplementing request signal sent by the storage battery sensor through the LIN and forwarding the power-supplementing request signal to the CAN bus, and simultaneously controlling the on and off of the LIN awakening function of the storage battery sensor and configuring the awakening threshold value of the storage battery sensor;
power system controller (PCU): the device is used for receiving the power-up signal, judging the power-up condition, executing the timing of the power-up function and feeding back the power-up completion condition;
power Battery Management System (BMS): the power controller is used for receiving the power controller signal and executing a high-voltage discharging function;
direct current converter (DCDC): the power controller is used for receiving the power controller signal, completing the conversion from high voltage to low voltage, and supplying power to the low voltage load and charging the storage battery.
Referring to fig. 3, fig. 3 is a flowchart of the power supply function before optimization. When the vehicle is powered down, the communication protocol defines that LIN communication between BDC and the sensor is stopped within 10 seconds, then the sensor starts to enter a low power consumption mode, the storage battery sensor detects the electric quantity of the storage battery and judges after the LIN is dormant for 50 minutes, when the electric quantity of the storage battery is lower than a wake-up threshold value, a low-level signal is actively sent to pull down the LIN bus, the LIN communication starts after a main node is awakened, meanwhile, the storage battery sensor sends out a wake-up zone bit of the low electric quantity, the zone bit is set, the signal serves as a power-up request signal of the vehicle, the BDC forwards the power-up request signal to the CAN bus from the LIN bus, and a power domain controller wakes up. When the PCU receives the power-supplementing request signal, the BMS is awakened through the hard wire to read the electric quantity and the temperature of the battery core, when the average temperature of the battery core is higher than 40 ℃, the power-supplementing function is not executed, and when the average temperature is lower than-20 ℃, the power-supplementing function is not executed. When the PCU judges that the electric quantity and the temperature of the power battery meet the design threshold value required by power supply, each controller of the high-voltage system starts to execute self-checking at the same time, and the PCU collects self-checking information fed back by each high-voltage controller. When the feedback self-check of the high-voltage system has no fault, the PCU controls the DCDC to charge with the target voltage, and meanwhile, the PCU starts to run the power-on function timer and maintains network wakeup. When the PCU power-up timer is full, the high-voltage power-down flow is started, the power-up function is exited, the power-up completion is fed back through the CAN bus, the BDC receives the power-up completion signal, the counting is started once, the whole vehicle controller does not have message transmission, each controller does not have message transmission, and the network ring building is completed to complete the whole vehicle dormancy. When the three power-up is completed, namely the BDC is fully counted for three times, the BDC sends a forbidden wake-up through the LIN bus, the sensor does not wake-up at low SOC any more later, when the vehicle is powered up again, the BDC clears the low-power wake-up count, and the BDC sets a wake-up threshold value through the LIN bus again.
Correspondingly, referring to fig. 4, fig. 4 is a flowchart of the optimized post-power-up function. Compared with the scheme before optimization: 1) The power-up triggering logic is optimized, namely the power-up triggering logic is added to collect and judge the electric quantity of the storage battery, the power-up is not required by the wake-up of the storage battery sensor, the problem that the whole vehicle is not dormant or abnormally wakes up is mainly solved, and when the wake-up period is within 50 minutes, the storage battery sensor cannot emit a wake-up zone bit with low electric quantity and sets the zone bit; when the PCU judges that the electric quantity of the storage battery is lower than a target threshold value, the PCU is used as a power supplementing request, and the follow-up process is the same as the pre-optimization process; 2) The electricity supplementing times are increased to 20 times, and the storage battery is continuously supplemented with electricity under the condition that the whole vehicle network is not in dormancy, so that the user can use the vehicle normally next time; 3) The temperature application range is-20-40 ℃ and is optimized to-30-40 ℃, the application scene of the power supply function is expanded, and the user experience is enhanced.
The embodiment of the utility model provides an electric automobile power supplementing device, which comprises: the storage battery sensor is used for monitoring the electric quantity of the storage battery; and the power system controller is used for receiving the electric quantity of the storage battery sent by the storage battery sensor after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value. The utility model can avoid the phenomenon that the whole vehicle is not dormant due to internal and external abnormal factors or the whole vehicle is deficient in power due to abnormal awakening with the awakening period within 50 minutes.
The embodiment of the utility model also provides an electric automobile, which comprises a storage battery, a low-voltage load and the device of any one of the above.
The electric vehicle provided in this embodiment and the electric vehicle power supply device embodiment belong to the same concept, and specific implementation processes of the electric vehicle power supply device embodiment are detailed in the electric vehicle power supply device embodiment, which is not described herein again.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (10)
1. An electric vehicle make-up device, the device comprising:
the storage battery sensor is used for monitoring the electric quantity of the storage battery;
and the power system controller is used for receiving the electric quantity of the storage battery sent by the storage battery sensor after the vehicle is powered down, and starting intelligent power supply under the condition that the electric quantity of the storage battery is judged to be lower than a target threshold value.
2. The apparatus of claim 1, further comprising a body domain controller;
the storage battery sensor is also used for measuring the electric quantity of the storage battery after the whole vehicle is dormant and the LIN signal is dormant for a target duration; sending a power-up request signal under the condition that the electric quantity of the storage battery is monitored to be lower than a target threshold value;
the vehicle body domain controller is used for receiving the power supply request signal sent by the storage battery sensor and forwarding the power supply request signal to the power system controller;
the power system controller is also used for starting intelligent power supply according to the power supply request signal.
3. The apparatus of claim 1, further comprising a power battery management system and a dc converter;
the power system controller is also used for judging whether the power supply condition is met before the intelligent power supply is started, and sending control signals to the power battery management system and the direct current converter under the condition that the power supply condition is judged to be met; the power battery management system is used for receiving the control signal sent by the power system controller and executing a high-voltage discharging function according to the control signal;
and the direct current converter is used for receiving the control signal sent by the power system controller, converting the high voltage into the low voltage based on the control signal, and supplying power to the low-voltage load and charging the storage battery by using the converted voltage.
4. The apparatus of claim 3, wherein the power system controller is further configured to determine whether the power battery charge is greater than a target charge, whether the power battery cell temperature is greater than a first temperature, whether the power battery cell temperature is less than a second temperature, and whether the high voltage system self-test is fault-free; when the electric quantity of the power battery is judged to be larger than the target electric quantity, the temperature of the battery core of the power battery is higher than the first temperature, the temperature of the battery core of the power battery is lower than the second temperature, and the high-voltage system is self-checked and has no faults, judging that the power supplementing condition is met; wherein the first temperature is lower than the second temperature.
5. The apparatus of claim 4, wherein the first temperature is minus 30 degrees celsius.
6. The apparatus of claim 4, wherein the second temperature is 40 degrees celsius.
7. The apparatus of claim 1, wherein the power system controller is further configured to start a power up function timer when the intelligent power up is started, and to exit the intelligent power up function when the timer counts up to a preset duration.
8. The apparatus of claim 7, wherein the power system controller is further configured to send a power-up complete signal to the body area controller after exiting the intelligent power-up function;
the vehicle body domain controller is used for counting the times of the received power-supplementing completion signals, and sending a wake-up prohibition signal to the storage battery sensor when the times reach preset times.
9. The apparatus of claim 8, wherein the predetermined number of times is 20.
10. An electric vehicle comprising a battery, a low voltage load and a device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321283865.4U CN220053577U (en) | 2023-05-24 | 2023-05-24 | Electric automobile mends electric installation and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321283865.4U CN220053577U (en) | 2023-05-24 | 2023-05-24 | Electric automobile mends electric installation and electric automobile |
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| CN220053577U true CN220053577U (en) | 2023-11-21 |
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| CN202321283865.4U Active CN220053577U (en) | 2023-05-24 | 2023-05-24 | Electric automobile mends electric installation and electric automobile |
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