CN113602145A - Power management device and management method for supplementing power to storage battery of electric logistics vehicle - Google Patents
Power management device and management method for supplementing power to storage battery of electric logistics vehicle Download PDFInfo
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- CN113602145A CN113602145A CN202110943672.6A CN202110943672A CN113602145A CN 113602145 A CN113602145 A CN 113602145A CN 202110943672 A CN202110943672 A CN 202110943672A CN 113602145 A CN113602145 A CN 113602145A
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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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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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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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Abstract
The invention discloses a power supply management device for supplementing power to a storage battery of an electric logistics vehicle, which comprises a battery pack, a key switch, a motor controller, a vehicle body controller, an instrument controller, a whole vehicle awakening relay, a power supplementing relay, a whole vehicle controller, a high-voltage to low-voltage controller and a battery management controller, wherein the modules are matched with each other to execute the starting, power supplementing and sleeping work of the electric logistics vehicle; the power management method of the power management device for replenishing power to the storage battery of the electric logistics vehicle is further provided. In addition, a whole vehicle awakening relay is additionally arranged between a whole vehicle awakening line and a controller related to power supplement, the power supplement function is completed in a matching mode, the power supplement operation is completed, the electric quantity loss is reduced, the power feed is avoided, and the vehicle does not need to be started by means of external equipment.
Description
Technical Field
The invention relates to the technical field of electric automobile charging, in particular to a power supply management device and a management method for supplementing power to a storage battery of an electric logistics vehicle.
Background
For new energy automobiles, a 12V storage battery is also used besides a power battery, and is commonly called a small battery. For an electric vehicle, the 12V battery supplies power to some low-voltage electrical components of the vehicle, and even needs to provide starting energy for the vehicle during starting. When using pure electric vehicles, we can find that after a period of time of not charging or long-term placement, the 12V battery can have the phenomenon of feed, and after the 12V battery feed, the vehicle can not be started, and the vehicle can be started only by means of external equipment, so that great inconvenience is brought to the use of pure electric vehicles.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a power management device and a management method for supplementing power to a storage battery of an electric logistics vehicle, after the power management device and the management method are used, a clock self-awakening module is arranged in a vehicle controller, the vehicle controller is awakened to monitor whether a battery pack is fed or not at intervals of a certain time in the Off state of the vehicle, the feeding condition can be detected in time, in addition, a vehicle awakening relay is additionally arranged between a vehicle awakening line (a first awakening signal line and a second awakening signal line) and a power-supplementing related controller (the vehicle controller, a high-voltage-to-low-voltage controller and a battery management controller), other controllers (a motor controller, a vehicle body controller and an instrument controller) are isolated during power supplement, the other controllers are prevented from being awakened, and the vehicle controller only awakens the power-supplementing related controller (the vehicle controller, the vehicle body controller and the instrument controller) through the power-supplementing relay, High-voltage to low-voltage controller and battery management controller), the cooperation is accomplished the benefit electric function, accomplishes the benefit electricity operation, reduces the electric quantity loss, avoids the feed to take place, need not to start the vehicle with the help of the external equipment.
In order to solve the technical problems, the invention adopts the technical scheme that:
the power management device comprises a battery pack, a key switch, a motor controller, a vehicle body controller, an instrument controller, a whole vehicle awakening relay, a power supplementing relay, a whole vehicle controller, a high-voltage-to-low-voltage controller and a battery management controller;
one end of the key switch is electrically connected with the battery pack, and the other end of the key switch is provided with an Off end, an On end and a Start end; the On end is electrically connected with the signal input ends of the motor controller, the vehicle body controller, the instrument controller and the whole vehicle awakening relay through a first awakening signal line respectively, the signal output end of the whole vehicle awakening relay is grounded, the strong current input end of the whole vehicle awakening relay is electrically connected with the battery pack, the strong current output end of the whole vehicle awakening relay is electrically connected with the input end of the whole vehicle controller, the input end of the high-voltage to low-voltage conversion controller and the input end of the battery management controller through a second awakening signal line respectively, the output end of the high-voltage to low-voltage conversion controller and the output end of the battery management controller are electrically connected with the strong current input end of the power supplementing relay, the strong current output end of the power supplementing relay is electrically connected with the strong current input end of the whole vehicle awakening relay, and the signal input end of the power supplementing relay is electrically connected with the output end of the whole vehicle controller through a third awakening signal line, the signal output end of the electricity supplementing relay is grounded; the Start end is electrically connected with the input end of the whole vehicle controller through a starting signal wire.
In order to solve the technical problem, the invention adopts the further technical scheme that:
furthermore, the whole vehicle wake-up relay and the power supply relay are both provided with pull-up resistors for pulling up the electrical level.
Furthermore, the motor controller, the vehicle body controller and the instrument controller are all electrically connected in parallel, and the vehicle control unit, the high-voltage to low-voltage controller and the battery management controller are all electrically connected in parallel.
Furthermore, a clock self-awakening module is arranged in the vehicle controller and used for monitoring the battery pack feeding at intervals of time in the Off state of the vehicle.
Further, the battery pack is a direct current 12V storage battery.
The invention also provides a power management method of the power management device for supplementing power to the storage battery of the electric logistics vehicle, which comprises the following steps:
s1, when the driver operates the key switch from the Off end to the non-Off end, and the first wake-up signal wire is pulled up to the high level, the second wake-up signal wire is pulled up to the high level, the third wake-up signal wire is pulled up to the high level, the starting signal wire is pulled up to the high level, the electric logistics vehicle is in the starting running state, and the electric logistics vehicle enters the power management mode in the starting running state;
s2, when the driver operates the key switch from the non-Off end to the Off end, and the first wake-up signal line is pulled down to a low level, the second wake-up signal line is pulled down to a low level, and the third wake-up signal line is pulled down to a low level, the signal line is started to be pulled down to a low level, the electric logistics vehicle is in a dormant state, and the electric logistics vehicle enters a power management mode in the dormant state;
s3, when the key switch is operated by the driver at the Off end, the first wake-up signal line is kept at a low level, the whole vehicle controller is self-waken up at intervals in the Off state through an internal clock, after the self-wakening, the third wake-up signal line is pulled up at the high level, the whole vehicle controller detects the voltage of the battery pack, the whole vehicle controller sends a signal for requesting power supplement to the battery management controller and the high-voltage to low-voltage controller, the battery management controller charges the battery pack through the high-voltage to low-voltage controller after judging the state of the battery pack, the electric logistics vehicle is in the power supplement state and enters a power management mode in the power supplement state.
Further, at S1, the power management mode in the start-up running state includes the steps of:
s11, switching a key switch from an Off end to a non-Off end, pulling high level of the first wake-up signal line, and waking up the motor controller, the vehicle body controller and the instrument controller;
s12, the first awakening signal line pulls up the level of the second awakening signal line through the whole vehicle awakening relay to awaken the whole vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
and S13, the vehicle control unit judges the state of the starting signal line and executes the starting action of the electric logistics vehicle.
Further, in S3, the power management mode in the power supplement state includes the following steps:
s31, the key switch state is at the Off end, the first wake-up signal line is pulled down in level, the motor controller, the vehicle body controller and the instrument controller are not wakened up, the vehicle controller is self-wakened up at intervals in the Off state through an internal clock self-wake-up module, and after self-wakening up, the third wake-up signal line is pulled up in level to waken up the vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
s32, the vehicle control unit detects whether the voltage of the battery pack is smaller than a voltage threshold value, and when the voltage of the battery pack is smaller than the voltage threshold value, the vehicle control unit sends a signal for requesting power supplement to the battery management controller and the high-voltage-to-low-voltage controller; when the vehicle control unit detects that the voltage of the battery pack reaches a normal value, the vehicle control unit sends a command of completing power supplement to the battery management controller and the high-voltage to low-voltage conversion controller, the battery management controller and the high-voltage to low-voltage conversion controller stop power supplement, and the vehicle control unit, the battery management controller and the high-voltage to low-voltage conversion controller all enter a dormant state.
Further, the vehicle control unit performs interval self-awakening power supplement in an Off state through an internal clock self-awakening module, and the interval self-awakening power supplement includes:
s311: in the Off state of the whole vehicle, the clock of the whole vehicle controller starts to time from the wakeup module, and the time is recorded as T;
s312: when T is larger than or equal to 1h, the clock self-awakening module is cleared; otherwise, repeat step S311;
s313: after the clock self-awakening module is subjected to zero clearing treatment, when the voltage of the battery pack is less than or equal to 9.5V, the power supplementing relay is closed, the third awakening signal line is pulled to be high in level, and the high-voltage-to-low-voltage controller and the battery management controller are awakened; otherwise, repeating the step S311;
s314: after the high-voltage to low-voltage controller and the battery management controller are awakened, when the high-voltage to low-voltage controller has no fault, the SOC loss rate is greater than or equal to 5 percent, and the battery management controller has no fault, the power supply is started; otherwise, repeating the step S311;
s315: when the voltage of the battery pack is larger than or equal to 13V, completing power supplement, and enabling the whole vehicle controller to initiate a power-off command; otherwise, continuing to supplement the power;
s316: after the power supply is completed, after the vehicle control unit initiates a power-Off command, the power supply relay is switched Off, the high-voltage to low-voltage controller and the battery management controller enter a dormant state, the vehicle control unit enters an Off state, the vehicle control unit enters the dormant state, the vehicle enters the Off dormant state, and the step S311 is repeated.
The invention has the beneficial effects that:
the vehicle controller is internally provided with the clock self-awakening module, and the vehicle controller is automatically awakened to monitor whether the battery pack feeds power or not at a certain time interval in the Off state of the vehicle, so that the power feeding condition can be detected in time,
in addition, a whole vehicle awakening relay is additionally arranged between a whole vehicle awakening line (a first awakening signal line and a second awakening signal line) and a controller (a whole vehicle controller, a high-voltage to low-voltage controller and a battery management controller) related to power supplement, when power supplement is carried out, other controllers (a motor controller, a vehicle body controller and an instrument controller) are isolated, the other controllers are prevented from being awakened, the whole vehicle controller only awakens the controller (the whole vehicle controller, the high-voltage to low-voltage controller and the battery management controller) related to power supplement through the power supplement relay, the power supplement function is completed in a matching mode, the power supplement operation is completed, the electric quantity loss is reduced, the power feed is avoided, and the vehicle does not need to be started by means of external equipment.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the module connection of the power management device of the present invention;
FIG. 2 is a schematic diagram of an interval self-wake-up power supplement method in an Off state according to the power management method of the present invention;
FIG. 3 is a change of signal lines when the driver operates the key switch according to the present invention;
FIG. 4 illustrates the state of the wake-up signal line during power up according to the present invention;
the parts in the drawings are marked as follows:
the system comprises a battery pack 1, a key switch 2, a motor controller 3, a vehicle body controller 4, an instrument controller 5, a vehicle awakening relay 6, a power supplementing relay 7, a vehicle controller 8, a clock self-awakening module 81, a high-voltage to low-voltage controller 9, a battery management controller 10, a first awakening signal line 11, a second awakening signal line 12, a third awakening signal line 13, a starting signal line 14 and a pull-up resistor 15.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention will be described in detail with reference to the accompanying drawings. The invention may be embodied in other different forms, i.e. it is capable of various modifications and changes without departing from the scope of the invention as disclosed.
Example 1
A power management device for supplementing power to a storage battery of an electric logistics vehicle is shown in figures 1 and 3 and comprises a battery pack 1, a key switch 2, a motor controller 3, a vehicle body controller 4, an instrument controller 5, a whole vehicle awakening relay 6, a power supplementing relay 7, a whole vehicle controller 8, a high-voltage-to-low-voltage controller 9 and a battery management controller 10;
one end of the key switch 2 is electrically connected with the battery pack 1, and the other end of the key switch 2 is provided with an Off end, an On end and a Start end; the On end is respectively and electrically connected with the signal input ends of the motor controller 3, the vehicle body controller 4, the instrument controller 5 and the whole vehicle awakening relay 6 through a first awakening signal line 11, the signal output end of the whole vehicle awakening relay 6 is grounded, the strong current input end of the whole vehicle awakening relay 6 is electrically connected with the battery pack 1, the strong current output end of the whole vehicle awakening relay 6 is respectively and electrically connected with the input end of the whole vehicle controller 8, the input end of the high-voltage to low-voltage controller 9 and the input end of the battery management controller 10 through a second awakening signal line 12, the output end of the high-voltage to low-voltage controller 9 and the output end of the battery management controller 10 are both electrically connected with the strong current input end of the power supplementing relay 7, the strong current output end of the power supplementing relay 7 is electrically connected with the strong current input end of the whole vehicle awakening relay 6, the signal input end of the power supplementing relay 7 is electrically connected with the output end of the whole vehicle controller 8 through a third awakening signal line 13, the signal output end of the electricity supplementing relay 7 is grounded; the Start end is electrically connected with the input end of the vehicle control unit 8 through a Start signal line 14.
The whole vehicle wake-up relay 6 and the power supplement relay 7 are both provided with pull-up resistors 15 for pulling up the electrical level.
The motor controller 3, the vehicle body controller 4 and the instrument controller 5 are all electrically connected in parallel, and the vehicle control unit 8, the high-voltage to low-voltage controller 9 and the battery management controller 10 are all electrically connected in parallel.
The vehicle control unit 8 is internally provided with a clock self-awakening module 81 for monitoring the feeding of the battery pack 1 at intervals in the Off state of the vehicle.
The battery pack 1 is a direct current 12V battery.
Example 2
A power management method of a power management device for replenishing power to a storage battery of an electric logistics vehicle, as shown in fig. 2 and 4, comprises the following steps:
the method comprises the following steps:
s1, when the driver operates the key switch from the Off end to the non-Off end, and the first wake-up signal wire is pulled up to the high level, the second wake-up signal wire is pulled up to the high level, the third wake-up signal wire is pulled up to the high level, the starting signal wire is pulled up to the high level, the electric logistics vehicle is in the starting running state, and the electric logistics vehicle enters the power management mode in the starting running state;
s2, when the driver operates the key switch from the non-Off end to the Off end, and the first wake-up signal line is pulled down to a low level, the second wake-up signal line is pulled down to a low level, and the third wake-up signal line is pulled down to a low level, the signal line is started to be pulled down to a low level, the electric logistics vehicle is in a dormant state, and the electric logistics vehicle enters a power management mode in the dormant state;
s3, when the key switch is operated by the driver at the Off end, the first wake-up signal line is kept at a low level, the whole vehicle controller is self-waken up at intervals in the Off state through an internal clock, after the self-wakening, the third wake-up signal line is pulled up at the high level, the whole vehicle controller detects the voltage of the battery pack, the whole vehicle controller sends a signal for requesting power supplement to the battery management controller and the high-voltage to low-voltage controller, the battery management controller charges the battery pack through the high-voltage to low-voltage controller after judging the state of the battery pack, the electric logistics vehicle is in the power supplement state and enters a power management mode in the power supplement state.
At S1, the power management mode in the start-up running state includes the steps of:
s11, switching a key switch from an Off end to a non-Off end, pulling high level of the first wake-up signal line, and waking up the motor controller, the vehicle body controller and the instrument controller;
s12, the first awakening signal line pulls up the level of the second awakening signal line through the whole vehicle awakening relay to awaken the whole vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
and S13, the vehicle control unit judges the state of the starting signal line and executes the starting action of the electric logistics vehicle.
At S3, the power management mode in the power supplement state includes the following steps:
s31, the key switch state is at the Off end, the first wake-up signal line is pulled down in level, the motor controller, the vehicle body controller and the instrument controller are not wakened up, the vehicle controller is self-wakened up at intervals in the Off state through an internal clock self-wake-up module, and after self-wakening up, the third wake-up signal line is pulled up in level to waken up the vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
s32, the vehicle control unit detects whether the voltage of the battery pack is smaller than a voltage threshold value, and when the voltage of the battery pack is smaller than the voltage threshold value, the vehicle control unit sends a signal for requesting power supplement to the battery management controller and the high-voltage-to-low-voltage controller; when the vehicle control unit detects that the voltage of the battery pack reaches a normal value, the vehicle control unit sends a command of completing power supplement to the battery management controller and the high-voltage to low-voltage conversion controller, the battery management controller and the high-voltage to low-voltage conversion controller stop power supplement, and the vehicle control unit, the battery management controller and the high-voltage to low-voltage conversion controller all enter a dormant state.
The vehicle control unit is through inside clock from awakening the module, at Off state interval from awakening the benefit electricity, the step of interval from awakening the benefit electricity includes:
s311: in the Off state of the whole vehicle, the clock of the whole vehicle controller starts to time from the wakeup module, and the time is recorded as T;
s312: when T is larger than or equal to 1h, the clock self-awakening module is cleared; otherwise, repeat step S311;
s313: after the clock self-awakening module is subjected to zero clearing treatment, when the voltage of the battery pack is less than or equal to 9.5V, the power supplementing relay is closed, the third awakening signal line is pulled to be high in level, and the high-voltage-to-low-voltage controller and the battery management controller are awakened; otherwise, repeating the step S311;
s314: after the high-voltage to low-voltage controller and the battery management controller are awakened, when the high-voltage to low-voltage controller has no fault, the SOC loss rate is greater than or equal to 5 percent, and the battery management controller has no fault, the power supply is started; otherwise, repeating the step S311;
s315: when the voltage of the battery pack is larger than or equal to 13V, completing power supplement, and enabling the whole vehicle controller to initiate a power-off command; otherwise, continuing to supplement the power;
s316: after the power supply is completed, after the vehicle control unit initiates a power-Off command, the power supply relay is switched Off, the high-voltage to low-voltage controller and the battery management controller enter a dormant state, the vehicle control unit enters an Off state, the vehicle control unit enters the dormant state, the vehicle enters the Off dormant state, and the step S311 is repeated.
The working process and working principle of the invention are as follows:
according to the functional characteristics of the power management apparatus and the power management method, the function of the relevant controller that supplements power to the battery pack 1 is defined as: the vehicle controller 8 is responsible for judging the vehicle state and the voltage of the battery pack 1, the battery management controller 10 is responsible for judging the charging condition of the vehicle, and the high-voltage to low-voltage controller 9 is responsible for supplying power to low-voltage accessories;
(1) the power management device and the power management method for meeting the requirement of starting driving are as follows:
when a driver operates the key switch 2 from the Off end to the non-Off end, the first wake-up signal line 11 is pulled up, so that controllers related to non-quick charging, such as the motor controller 3, the vehicle body controller 4 and the instrument controller 5, can normally work, and meanwhile, the first wake-up signal line 11 is pulled up the second wake-up signal line 12 through the vehicle wake-up relay 6, so that controllers related to power supplement, such as the vehicle controller 8, the high-voltage to low-voltage controller 9 and the battery management controller 10, are woken up. As shown in fig. 3, the vehicle control unit 8 finishes starting by determining the state of the starting signal line 14;
when a driver operates the key switch 2 from a non-Off end to an Off end, the first awakening signal line 11 is pulled down, the second awakening signal line 12 is pulled down through the whole vehicle awakening relay 6, and all controllers enter a sleep state according to the state of the awakening signal lines;
(2) the power supply management device and the power supply management method meet the requirement of supplementing power to the battery pack:
as shown in fig. 3, during power supplement, the state of the key switch 2 is at the Off end, the first wake-up signal line 11 is kept pulled down, the controller related to non-power supplement is not woken up, the vehicle body controller 4 wakes up once at a certain time interval in the Off state through the internal clock wake-up module 81, for example, 1 hour, after waking up, the third wake-up signal line 13 is pulled up, and further wakes up the power supplement related controller and the module device, meanwhile, the vehicle controller 8 detects whether the voltage of the battery pack 1 is smaller than a certain value, if the voltage is smaller than the certain value, the vehicle controller 8 sends a signal requesting power supplement to the battery management controller 10 and the high-to-low voltage controller 9, the battery management controller 10 charges the battery pack through the high-to-low voltage controller 9 after determining the state of the battery pack, and when the vehicle controller 8 detects that the voltage of the battery pack reaches a normal value, determines the vehicle state and sends a command of completing power supplement to the battery management controller 10 and the high-to-low voltage controller 9, and (3) stopping the power supplement of the battery management controller 10 and the high-voltage to low-voltage controller 9, and finally enabling the vehicle control unit 8, the high-voltage to low-voltage controller 9 and the battery management controller 10 to enter a dormant state, wherein the specific flow is shown in fig. 2.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the specification and the drawings, or other related technical fields, are encompassed by the present invention.
Claims (9)
1. The utility model provides a supply management device who mends electricity for electronic commodity circulation car battery which characterized in that: the power management device comprises a battery pack (1), a key switch (2), a motor controller (3), a vehicle body controller (4), an instrument controller (5), a vehicle wake-up relay (6), a power supply relay (7), a vehicle controller (8), a high-voltage to low-voltage controller (9) and a battery management controller (10);
one end of the key switch (2) is electrically connected with the battery pack (1), and the other end of the key switch (2) is provided with an Off end, an On end and a Start end; the On end is respectively electrically connected with the motor controller (3), the automobile body controller (4), the instrument controller (5) and the signal input end of the whole automobile awakening relay (6) through a first awakening signal line (11), the signal output end of the whole automobile awakening relay (6) is grounded, the strong current input end of the whole automobile awakening relay (6) is electrically connected with the battery pack (1), the strong current output end of the whole automobile awakening relay (6) is respectively electrically connected with the input end of the whole automobile controller (8), the input end of the high-voltage-to-low-voltage controller (9) and the input end of the battery management controller (10) through a second awakening signal line (12), the output end of the high-voltage-to-low-voltage controller (9) and the output end of the battery management controller (10) are electrically connected with the input end of the electricity supplementing relay (7), the strong current output end of the electricity supplementing relay (7) is electrically connected with the strong current input end of the whole vehicle awakening relay (6), the signal input end of the electricity supplementing relay (7) is electrically connected with the output end of the whole vehicle controller (8) through a third awakening signal wire (13), and the signal output end of the electricity supplementing relay (7) is grounded; the Start end is electrically connected with the input end of the vehicle control unit (8) through a starting signal line (14).
2. The power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 1, wherein: the whole vehicle awakening relay (6) and the power supplementing relay (7) are both provided with pull-up resistors (15) for pulling high level.
3. The power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 1, wherein: the motor controller (3), the automobile body controller (4) and the instrument controller (5) are all electrically connected in parallel, and the vehicle control unit (8), the high-voltage-to-low-voltage controller (9) and the battery management controller (10) are all electrically connected in parallel.
4. The power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 1, wherein: and a clock self-awakening module (81) is arranged in the vehicle controller (8) and is used for monitoring the power feed of the battery pack (1) by self-awakening at intervals in the Off state of the vehicle.
5. The power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 1, wherein: the battery pack (1) is a direct-current 12V storage battery.
6. A power management method of the power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in any one of claims 1 to 5, characterized in that:
the method comprises the following steps:
s1, when the driver operates the key switch from the Off end to the non-Off end, and the first wake-up signal wire is pulled up to the high level, the second wake-up signal wire is pulled up to the high level, the third wake-up signal wire is pulled up to the high level, the starting signal wire is pulled up to the high level, the electric logistics vehicle is in the starting running state, and the electric logistics vehicle enters the power management mode in the starting running state;
s2, when the driver operates the key switch from the non-Off end to the Off end, and the first wake-up signal line is pulled down to a low level, the second wake-up signal line is pulled down to a low level, and the third wake-up signal line is pulled down to a low level, the signal line is started to be pulled down to a low level, the electric logistics vehicle is in a dormant state, and the electric logistics vehicle enters a power management mode in the dormant state;
s3, when the key switch is operated by the driver at the Off end, the first wake-up signal line is kept at a low level, the whole vehicle controller is self-waken up at intervals in the Off state through an internal clock, after the self-wakening, the third wake-up signal line is pulled up at the high level, the whole vehicle controller detects the voltage of the battery pack, the whole vehicle controller sends a signal for requesting power supplement to the battery management controller and the high-voltage to low-voltage controller, the battery management controller charges the battery pack through the high-voltage to low-voltage controller after judging the state of the battery pack, the electric logistics vehicle is in the power supplement state and enters a power management mode in the power supplement state.
7. The power management method of the power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 6, wherein the power management method comprises the following steps: at S1, the power management mode in the start-up running state includes the steps of:
s11, switching a key switch from an Off end to a non-Off end, pulling high level of the first wake-up signal line, and waking up the motor controller, the vehicle body controller and the instrument controller;
s12, the first awakening signal line pulls up the level of the second awakening signal line through the whole vehicle awakening relay to awaken the whole vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
and S13, the vehicle control unit judges the state of the starting signal line and executes the starting action of the electric logistics vehicle.
8. The power management method of the power management device for replenishing power to the storage battery of the electric logistics vehicle as claimed in claim 6, wherein the power management method comprises the following steps: at S3, the power management mode in the power supplement state includes the following steps:
s31, the key switch state is at the Off end, the first wake-up signal line is pulled down in level, the motor controller, the vehicle body controller and the instrument controller are not wakened up, the vehicle controller is self-wakened up at intervals in the Off state through an internal clock self-wake-up module, and after self-wakening up, the third wake-up signal line is pulled up in level to waken up the vehicle controller, the high-voltage-to-low-voltage controller and the battery management controller;
s32, the vehicle control unit detects whether the voltage of the battery pack is smaller than a voltage threshold value, and when the voltage of the battery pack is smaller than the voltage threshold value, the vehicle control unit sends a signal for requesting power supplement to the battery management controller and the high-voltage-to-low-voltage controller; when the vehicle control unit detects that the voltage of the battery pack reaches a normal value, the vehicle control unit sends a command of completing power supplement to the battery management controller and the high-voltage to low-voltage conversion controller, the battery management controller and the high-voltage to low-voltage conversion controller stop power supplement, and the vehicle control unit, the battery management controller and the high-voltage to low-voltage conversion controller all enter a dormant state.
9. The power management method of the power management device for replenishing power to the storage battery of the electric logistics vehicle according to claim 8, characterized in that: the vehicle control unit is through inside clock from awakening the module, at Off state interval from awakening the benefit electricity, the step of interval from awakening the benefit electricity includes:
s311: in the Off state of the whole vehicle, the clock of the whole vehicle controller starts to time from the wakeup module, and the time is recorded as T;
s312: when T is larger than or equal to 1h, the clock self-awakening module is cleared; otherwise, repeat step S311;
s313: after the clock self-awakening module is subjected to zero clearing treatment, when the voltage of the battery pack is less than or equal to 9.5V, the power supplementing relay is closed, the third awakening signal line is pulled to be high in level, and the high-voltage-to-low-voltage controller and the battery management controller are awakened; otherwise, repeating the step S311;
s314: after the high-voltage to low-voltage controller and the battery management controller are awakened, when the high-voltage to low-voltage controller has no fault, the SOC loss rate is greater than or equal to 5 percent, and the battery management controller has no fault, the power supply is started; otherwise, repeating the step S311;
s315: when the voltage of the battery pack is larger than or equal to 13V, completing power supplement, and enabling the whole vehicle controller to initiate a power-off command; otherwise, continuing to supplement the power;
s316: after the power supply is completed, after the vehicle control unit initiates a power-Off command, the power supply relay is switched Off, the high-voltage to low-voltage controller and the battery management controller enter a dormant state, the vehicle control unit enters an Off state, the vehicle control unit enters the dormant state, the vehicle enters the Off dormant state, and the step S311 is repeated.
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