CN114801876A - Precharge control method, precharge control device, storage medium, processor and electronic device - Google Patents
Precharge control method, precharge control device, storage medium, processor and electronic device Download PDFInfo
- Publication number
- CN114801876A CN114801876A CN202210560404.0A CN202210560404A CN114801876A CN 114801876 A CN114801876 A CN 114801876A CN 202210560404 A CN202210560404 A CN 202210560404A CN 114801876 A CN114801876 A CN 114801876A
- Authority
- CN
- China
- Prior art keywords
- voltage
- converter
- charging
- target voltage
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000003990 capacitor Substances 0.000 claims abstract description 101
- 238000004146 energy storage Methods 0.000 claims abstract description 41
- 230000004044 response Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a precharge control method and device, a storage medium, a processor and an electronic device. The method comprises the following steps: determining a pre-charging target voltage interval of a pre-charging capacitor, wherein the maximum value of the voltage interval is a first target voltage, and the minimum value of the voltage interval is a second target voltage; controlling a DC/DC converter to pre-charge a pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition; under the condition that the voltage of the pre-charging capacitor reaches a first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition; if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than a second target voltage or not; and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage. The invention solves the technical problems that the light weight of the electric automobile is influenced and the fault factors of high-voltage electrification are improved due to the addition of the pre-charging component.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a precharge control method and device, a storage medium, a processor and an electronic device.
Background
The starting mode of the electric automobile is different from that of the traditional fuel oil vehicle, and the high-voltage electrification and starting of the electric automobile can be completed by controlling the actuation of a main relay at the output end of a high-voltage battery. Therefore, the high-voltage power-on function becomes an important research content affecting the functional reliability and user experience of the vehicle.
A micro-normal bus capacitor is connected in parallel between a high-voltage positive line and a high-voltage negative line of high-voltage components in a high-voltage system of the electric automobile, such as high-voltage accessories of a motor controller, an air conditioner compressor, a vehicle-mounted charger and the like, and is used for voltage stabilization and EMC filtering of the high-voltage components. Before the electric automobile attracts and closes a main positive relay and a main negative relay of a high-voltage battery, a pre-charging relay and a pre-charging resistor are generally needed to pre-charge the bus capacitor, so that the phenomenon that the relay is damaged due to the fact that large current is generated in the moment when the relay attracts and closes the power battery is avoided.
Above-mentioned technical scheme needs to increase extra pre-charge relay and pre-charge resistance, has increased electric automobile's cost, needs extra space to arrange it simultaneously, has increased the size and the weight of high voltage distribution box in the battery package, is unfavorable for electric automobile's lightweight. In addition, if a primary pre-charging relay or a pre-charging resistor is abnormal in the high-voltage power-on process, the high-voltage power-on strategy of the electric vehicle usually judges that the power-on fails, and the user needs to be powered on again or informed of the failure prompt, so that the use experience of the user is greatly influenced.
Disclosure of Invention
The embodiment of the invention provides a pre-charging control method and device, a storage medium, a processor and an electronic device, and aims to at least solve the technical problems that the light weight of an electric automobile is influenced and the fault factor of high-voltage power-on is improved due to the fact that a pre-charging component is added.
According to an aspect of an embodiment of the present invention, there is provided a method for controlling precharge, including: acquiring the output voltage of the high-voltage battery; determining a pre-charging target voltage interval of the pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage; acquiring energy storage information of the low-voltage battery, wherein the energy storage information comprises output voltage and charge state of the low-voltage battery; controlling a DC/DC converter to pre-charge a pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition; under the condition that the voltage of the pre-charging capacitor reaches a first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition; if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than a second target voltage or not; and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage.
Optionally, in response to that the energy storage information of the low-voltage battery meets a first preset condition, controlling the DC/DC converter to precharge the precharge capacitor to a first target voltage includes: controlling the DC/DC converter to pre-charge by taking first preset current as a pre-charging capacitor in response to the energy storage information of the low-voltage battery meeting a first preset condition; under the condition that the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a third target voltage, controlling the DC/DC converter to pre-charge by taking a second preset current as a pre-charge capacitor, wherein the third target voltage is less than the second target voltage, and the second preset current is greater than the first preset current; and under the condition that the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a second target voltage, controlling the DC/DC converter to pre-charge to the first target voltage by taking a third preset current as a pre-charge capacitor, wherein the third preset current is smaller than the second preset current.
Optionally, the method further comprises: under the condition that the DC/DC converter pre-charges the pre-charging capacitor by taking the first preset current as the pre-charging capacitor, judging whether the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a third target voltage or not; and if so, controlling the DC/DC converter to exit the pre-charging working mode.
Optionally, the method further comprises: under the condition that the DC/DC converter performs pre-charging by taking second preset current as a pre-charging capacitor, judging whether the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a second target voltage; and if so, controlling the DC/DC converter to exit the pre-charging working mode.
Optionally, the method further comprises: before the DC/DC converter pre-charges the pre-charging capacitor, judging whether the energy storage information of the low-voltage battery meets a first preset condition; and if not, controlling the DC/DC converter to exit the pre-charging working mode.
Alternatively, the voltage detection error includes a detection error of the high-voltage battery voltage, a detection error of the pre-charge capacitor voltage, and a detection error of the high-voltage side voltage of the DC/DC converter.
According to another aspect of the embodiments of the present invention, there is also provided a control apparatus for precharging, including: the acquisition module is used for acquiring the output voltage of the high-voltage battery and determining a pre-charging target voltage interval of the pre-charging capacitor based on the output voltage of the high-voltage battery, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage; the energy storage information is used for acquiring the energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery; the first control module is used for responding that the energy storage information of the low-voltage battery meets a first preset condition and controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage; the judgment module is used for judging whether the electric automobile meets a high-voltage power-on condition or not under the condition that the voltage of the pre-charging capacitor reaches a first target voltage; if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than a second target voltage or not; and the second control module is used for controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage.
According to another aspect of the embodiments of the present invention, there is also provided a computer storage medium, which includes a stored program, wherein when the program runs, the apparatus in which the computer storage medium is located is controlled to execute the method of any one of the above schemes.
According to another aspect of embodiments of the present invention, there is also provided a processor for executing a program, the processor being arranged to execute a computer program to perform the method of any one of the above aspects.
According to another aspect of the embodiments of the present invention, there is also provided an electronic apparatus, including a memory and a processor, the memory storing a computer program therein, the processor being configured to execute the computer program to perform the method of any one of the above aspects.
In the embodiment of the invention, the low-voltage electric energy of the low-voltage battery is converted into the high-voltage electric energy through the DC/DC converter and is pre-charged for the pre-charging capacitor, so that a pre-charging relay or a pre-charging resistor is replaced, the cost and the arrangement space of the electric automobile are saved, the light-weight design of the electric automobile is not influenced, and the condition that the pre-charging relay or the pre-charging resistor influences the high-voltage power-on due to abnormal conditions does not exist. Before the pre-charging capacitor is charged, the energy storage information of the low-voltage battery is judged, and the phenomenon that the pre-charging fails because the low-voltage battery cannot provide enough pre-charging energy for the pre-charging capacitor due to insufficient voltage and under voltage is avoided. In the process of detecting whether the high-voltage power-on condition is met, the DC/DC converter repeatedly charges the pre-charging capacitor to the first target voltage, so that the situation that the voltage of the pre-charging capacitor is discharged and is lower than the standard pre-charging target voltage due to the existence of the passive discharge resistor is avoided, meanwhile, the waiting time of related faults of high-voltage power-on can be reduced, the next flow step of high-voltage power-on can be directly entered after the faults are eliminated, the robustness of the electric vehicle pre-charging control strategy is improved, and the user experience is not influenced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a block diagram of an electronic device to which an alternative precharge control method according to an embodiment of the present invention is applied to a vehicle;
FIG. 2 is a block diagram of a pre-charging system;
FIG. 3 is a flow chart diagram of an alternative precharge control method according to an embodiment of the present invention;
FIG. 4 is a flow chart diagram of an alternative precharge control method according to an embodiment of the present invention;
fig. 5 is a block diagram of an alternative precharge control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for controlling precharging, it is noted that the steps illustrated in the flowchart of the figure may be performed in a computer system such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
The method embodiments may be performed in an electronic device or similar computing device that includes a memory and a processor in a vehicle. Taking the example of an electronic device operating on a vehicle, as shown in fig. 1, the electronic device of the vehicle may include one or more processors 102 (the processors may include, but are not limited to, Central Processing Units (CPUs), Graphics Processing Units (GPUs), Digital Signal Processing (DSP) chips, Microprocessors (MCUs), programmable logic devices (FPGAs), neural Network Processors (NPUs), Tensor Processors (TPUs), Artificial Intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the electronic device of the automobile may further include a transmission device 106, an input-output device 108, and a display device 110 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 1 is merely an illustration and is not intended to limit the structure of the electronic device of the vehicle. For example, the electronic device of the vehicle may also include more or fewer components than described above, or have a different configuration than described above.
The memory 104 may be used to store a computer program, for example, a software program and a module of an application software, such as a computer program corresponding to the control method of pre-charging in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the control method of the hydrogen direct injection system. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
The display device 110 may be, for example, a touch screen type Liquid Crystal Display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a Graphical User Interface (GUI) with which a user can interact by touching finger contacts and/or gestures on a touch-sensitive surface, where the human-machine interaction function optionally includes the following interactions: executable instructions for creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, emailing, call interfacing, playing digital video, playing digital music, and/or web browsing, etc., for performing the above-described human-computer interaction functions, are configured/stored in one or more processor-executable computer program products or readable storage media.
In an embodiment of the present application, there is provided an electric vehicle high-voltage pre-charging system, and fig. 2 is a schematic block diagram of the electric vehicle high-voltage pre-charging system, as shown in fig. 2, the system includes: the system comprises a vehicle control unit, a DC/DC converter, a motor controller, a high-voltage electrical accessory, a high-voltage battery, a low-voltage battery, a required energy transmission line and a communication line. The DC/DC converter is composed of a power unit and a control unit, the low-voltage battery is composed of a battery controller and a battery module, and the high-voltage battery is composed of a high-voltage Battery Management System (BMS) and a battery module. The low-voltage battery can be a lead-acid storage battery or a lithium battery, the output voltage and the state of charge of the lead-acid storage battery can be collected and estimated through a battery sensor, and the output voltage and the state of charge of the lithium battery can be collected and estimated through a low-voltage battery management system.
Further, the constituent modules of the high-voltage pre-charging system of the electric vehicle are described in detail.
The vehicle control unit monitors the state of the electric vehicle under various working conditions and the faults of various parts in real time, and controls the vehicle to be powered on and powered off under high voltage according to the vehicle state and the fault types of the parts. The vehicle control unit is in real-time communication with the DC/DC converter, the motor controller, the high-voltage Battery Management System (BMS) and the battery controller and controls the DC/DC converter to start or close a pre-charging function.
The motor controller converts high-voltage direct-current electric energy of the high-voltage battery into three-phase alternating-current electric energy required by the motor, and provides driving force for the electric automobile. A micro-normal bus capacitor is connected in parallel between a high-voltage positive line and a negative line in the motor controller and used for voltage stabilization and EMC filtering, and the voltage of the bus capacitor can be uploaded to a communication line of the whole vehicle in real time.
The high-voltage accessory comprises an air conditioner compressor, a vehicle-mounted charger, a battery heater and the like, and a micro-normal bus capacitor is connected in parallel between a high-voltage positive line and a high-voltage negative line in the high-voltage accessory and used for voltage stabilization and EMC filtering. The bus capacitor of the high-voltage electrical accessory and the bus capacitor of the motor controller jointly form a bus capacitor, namely a pre-charging capacitor, of the high-voltage pre-charging system of the electric automobile.
The battery module inside the high-voltage battery is used for storing energy or providing energy for the running of the electric automobile, the high-voltage Battery Management System (BMS) can collect the battery voltage in real time, and the battery voltage can be uploaded to a communication line of the whole automobile in real time.
The battery module in the low-voltage battery is used for storing energy or supplying power for a battery automobile low-voltage controller, the battery controller in the low-voltage battery is used for collecting the voltage and the charge state of the battery, and the voltage and the charge state of the battery can be uploaded to a finished automobile communication line in real time.
The DC/DC converter is communicated with the whole vehicle controller, the motor controller and the battery controller, and converts low-voltage direct-current voltage of the low-voltage battery into high-voltage direct-current voltage to pre-charge the bus capacitor in the high-voltage electrifying process of the electric vehicle. The power unit of the DC/DC converter is formed by a certain number of switching tubes according to the corresponding circuit topology principle and is used for realizing the function of converting low-voltage direct-current voltage into high-voltage direct-current voltage. The control unit of the DC/DC converter is formed by a control chip and a related matching circuit, and corresponding instructions are sent to control the power unit to be turned on or turned off according to certain logic time sequence according to signals uploaded by the whole vehicle controller, the motor controller, the high-voltage Battery Management System (BMS) and the battery sensor in real time.
An embodiment of the present application further provides a control method operating in the above-mentioned pre-charging, fig. 3 is a flowchart of the control method of pre-charging according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S1: the method comprises the steps of obtaining the output voltage of a high-voltage battery, and determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage. And acquiring energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery. Step S2: and controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition. Step S3: and under the condition that the voltage of the pre-charging capacitor reaches the first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition. And if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than the second target voltage. Step S4: and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage. The first preset condition is that the output voltage of the low-voltage battery is greater than the preset voltage, and the charge state of the low-voltage battery is greater than the preset charge state, so that sufficient pre-charge energy is provided for the pre-charge capacitor. The standard pre-charge target voltage is within the pre-charge target voltage interval, the standard pre-charge target voltage is greater than the second target voltage, and the standard pre-charge target voltage is less than the first target voltage.
In the embodiment, the low-voltage electric energy of the low-voltage battery is converted into the high-voltage electric energy through the DC/DC converter, and the pre-charging capacitor is pre-charged, so that a pre-charging relay or a pre-charging resistor is replaced, the cost and the arrangement space of the electric automobile are saved, the light-weight design of the electric automobile is not influenced, and the condition that the pre-charging relay or the pre-charging resistor influences the high-voltage power-on due to abnormal conditions does not exist. Before the pre-charging capacitor is charged, the energy storage information of the low-voltage battery is judged, and the phenomenon that the pre-charging fails because the low-voltage battery cannot provide enough pre-charging energy for the pre-charging capacitor due to insufficient voltage and under voltage is avoided. In the process of detecting whether the high-voltage power-on condition is met, the DC/DC converter repeatedly charges the pre-charging capacitor to the first target voltage, so that the situation that the voltage of the pre-charging capacitor is discharged and is lower than the standard pre-charging target voltage due to the existence of the passive discharge resistor is avoided, meanwhile, the waiting time of related faults of high-voltage power-on can be reduced, the next flow step of high-voltage power-on can be directly entered after the faults are eliminated, the robustness of the electric vehicle pre-charging control strategy is improved, and the user experience is not influenced.
Optionally, in step S2, in response to that the energy storage information of the low-voltage battery satisfies a first preset condition, the method controls the DC/DC converter to precharge the precharge capacitor to a first target voltage, and includes the following specific steps: and controlling the DC/DC converter to pre-charge the pre-charge capacitor by taking first preset current as the pre-charge capacitor in response to the stored energy information of the low-voltage battery meeting a first preset condition. And under the condition that the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a third target voltage, controlling the DC/DC converter to pre-charge by taking a second preset current as a pre-charge capacitor, wherein the third target voltage is less than the second target voltage, and the second preset current is greater than the first preset current. And under the condition that the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a second target voltage, controlling the DC/DC converter to pre-charge to the first target voltage by taking a third preset current as a pre-charge capacitor, wherein the third preset current is smaller than the second preset current. The DC/DC converter is connected with the pre-charging capacitor in parallel, and the voltage of the high-voltage side of the DC/DC converter is equal to the voltage of the pre-charging capacitor.
In the above steps, the output current of the DC/DC converter is controlled according to the high-voltage side voltage of the DC/DC converter or the voltage of the precharge capacitor. Specifically, the DC/DC converter pre-charges the pre-charge capacitor with a smaller first preset current in an initial pre-charge stage, pre-charges the pre-charge capacitor with a larger second preset current to be lower than a standard pre-charge target voltage in a middle pre-charge stage, and pre-charges the pre-charge capacitor with a smaller third preset current to be higher than the standard pre-charge target voltage in a last pre-charge stage. The DC/DC converter outputs current in a soft start mode, and damage to a power module in the DC/DC converter is avoided.
Optionally, in a case where the DC/DC converter precharges the precharge capacitor with the first preset current, it is determined whether the high-voltage side voltage of the DC/DC converter is greater than or equal to a third target voltage. And if so, controlling the DC/DC converter to exit the pre-charging working mode. The output circuit of the DC/DC converter is matched with the output voltage of the DC/DC converter, so that damage to a power module in the DC/DC converter and further precharge failure are avoided.
Optionally, in a case that the DC/DC converter precharges the precharge capacitor with the second preset current, it is determined whether the high-voltage side voltage of the DC/DC converter is greater than or equal to the second target voltage. And if so, controlling the DC/DC converter to exit the pre-charging working mode. The output circuit of the DC/DC converter is matched with the output voltage of the DC/DC converter, so that damage to a power module in the DC/DC converter and further precharge failure are avoided.
Optionally, before the DC/DC converter precharges the precharge capacitor, it is determined whether the energy storage information of the low-voltage battery meets a first preset condition. And if not, controlling the DC/DC converter to exit the pre-charging working mode. And when the energy storage information of the low-voltage battery does not meet the first preset condition, the pre-charging of the pre-charging capacitor is forbidden, so that the phenomenon of pre-charging failure caused by insufficient energy is avoided.
Alternatively, the voltage detection error mentioned in step S1 includes: a detection error of the voltage of the high-voltage battery, a detection error of the voltage of the pre-charge capacitor, and a detection error of the voltage on the high-voltage side of the DC/DC converter. Specifically, a standard precharge of a precharge capacitor is determined based on an output voltage of a high voltage batteryTarget voltage V targert Determining the voltage bias V based on the voltage detection error x The precharge target voltage interval is determined as [ V ] targert -V x ,V targert +V x ]。
FIG. 4 is a logic diagram of a control method for pre-charging according to an alternative embodiment of the present application, as shown in FIG. 4, including the following steps:
step 10: after the vehicle control unit receives a high-voltage power-on command, a bus capacitor pre-charging target voltage value V is set according to the high-voltage battery voltage collected by the BMS target 。
Step 20: the vehicle control unit sends a pre-charging enabling and bus capacitor pre-charging target voltage value V to the DC/DC converter target 。
Step 30: the DC/DC converter enters a precharge mode of operation.
Step 40: the DC/DC converter control module monitors the voltage and SOC reported by the low-voltage battery controller in real time, and if the voltage of the low-voltage battery is greater than a preset value V LV And the SOC is greater than the preset value X%, step 50 is executed. Otherwise, step 100 is performed.
Step 50: DC/DC converter with small preset current value I 1 The bus capacitor is charged to the preset voltage value V1, and if the DC/DC converter control module detects that the high-side voltage is greater than or equal to V1, step 60 is executed. Otherwise, step 100 is performed.
Step 60: DC/DC converter with large preset current value I 2 Charging the bus capacitor to a preset voltage value V 2 In which V is 2 ＝V targert -V x If the DC/DC converter control module detects that the voltage on the high-voltage side is greater than or equal to V 2 Then step 7 is performed. Otherwise, step 100 is performed.
Step 70: DC/DC converter with small preset current value I 3 Charging the bus capacitor to a preset voltage value V 3 In which V is 3 ＝V targert +V x 。
Step 80: and the vehicle control unit judges whether the high-voltage power-on condition is met or not in real time, and if the high-voltage power-on condition is met, the step 10 is executed. Otherwise, step 90 is performed.
Step 90: the DC/DC converter is continuously in a pre-charging working mode, and if the voltage of the high-voltage side of the DC/DC converter is detected to be less than V in the waiting process 2 Then continue with the preset current I 3 Charging the bus capacitor to V 3 。
Step 100: the DC/DC converter exits the pre-charge mode of operation.
An embodiment of the present application further provides a precharge control device, and fig. 5 is a block diagram of a structure of the precharge control device, as shown in fig. 5, the device includes: an acquisition module 51, a first control module 52, a determination module 53, and a second control module 54. The obtaining module 51 is configured to obtain an output voltage of the high-voltage battery, determine a pre-charge target voltage interval of the pre-charge capacitor based on the output voltage of the high-voltage battery, where a maximum value of the pre-charge target voltage interval is a first target voltage, and a minimum value of the pre-charge target voltage interval is a second target voltage, and obtain energy storage information of the low-voltage battery, where the energy storage information includes the output voltage and a state of charge of the low-voltage battery. The first control module 52 is configured to control the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery satisfying a first preset condition. The judging module 53 is configured to judge whether the electric vehicle meets a high-voltage power-on condition when the voltage of the pre-charge capacitor reaches a first target voltage; and if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than the second target voltage. The second control module 54 is configured to control the DC/DC converter to continue precharging the precharge capacitor to the first target voltage if the voltage on the high-voltage side of the present DC/DC converter is less than the second target voltage.
Embodiments of the present application further provide a storage medium having a computer program stored therein, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed. Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of: step S1: the method comprises the steps of obtaining the output voltage of a high-voltage battery, and determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage. And acquiring energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery. Step S2: and controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition. Step S3: and under the condition that the voltage of the pre-charging capacitor reaches the first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition. And if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than the second target voltage. Step S4: and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage.
Embodiments of the present application further provide a processor configured to run a computer program to perform the steps of any of the above method embodiments. Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program: step S1: the method comprises the steps of obtaining the output voltage of a high-voltage battery, and determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage. And acquiring energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery. Step S2: and controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition. Step S3: and under the condition that the voltage of the pre-charging capacitor reaches the first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition. And if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than the second target voltage. Step S4: and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage.
Embodiments of the present application further provide an electronic device, including a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to perform the steps in any of the above method embodiments. Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program: step S1: the method comprises the steps of obtaining the output voltage of a high-voltage battery, and determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage. And acquiring energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery. Step S2: and controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery meeting a first preset condition. Step S3: and under the condition that the voltage of the pre-charging capacitor reaches the first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition. And if not, judging whether the voltage of the high-voltage side of the current DC/DC converter is smaller than the second target voltage. Step S4: and under the condition that the voltage of the high-voltage side of the current DC/DC converter is less than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of controlling pre-charging, the method comprising:
acquiring the output voltage of the high-voltage battery;
determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery and a voltage detection error, wherein the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage;
acquiring energy storage information of a low-voltage battery, wherein the energy storage information comprises output voltage and state of charge of the low-voltage battery;
responding to the energy storage information of the low-voltage battery to meet a first preset condition, and controlling a DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage;
under the condition that the voltage of the pre-charging capacitor reaches the first target voltage, judging whether the electric automobile meets a high-voltage electrifying condition; if not, judging whether the voltage of the high-voltage side of the DC/DC converter is smaller than the second target voltage or not;
and under the condition that the voltage of the high-voltage side of the DC/DC converter is smaller than the second target voltage, controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage.
2. The method of claim 1, wherein controlling the DC/DC converter to pre-charge the pre-charge capacitor to a first target voltage in response to the energy storage information of the low-voltage battery satisfying a first preset condition comprises:
responding to the energy storage information of the low-voltage battery to meet a first preset condition, and controlling the DC/DC converter to pre-charge the pre-charge capacitor by using a first preset current;
when the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a third target voltage, controlling the DC/DC converter to pre-charge the pre-charge capacitor by using a second preset current, wherein the third target voltage is less than the second target voltage, and the second preset current is greater than the first preset current;
and under the condition that the voltage of the high-voltage side of the DC/DC converter is greater than or equal to the second target voltage, controlling the DC/DC converter to pre-charge the pre-charge capacitor to the first target voltage by using a third preset current, wherein the third preset current is smaller than the second preset current.
3. The method of claim 2, further comprising:
under the condition that the DC/DC converter pre-charges the pre-charging capacitor by using a first preset current, judging whether the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a third target voltage;
and if so, controlling the DC/DC converter to exit the pre-charging working mode.
4. The method of claim 2, further comprising:
under the condition that the DC/DC converter pre-charges the pre-charging capacitor by using a second preset current, judging whether the voltage of the high-voltage side of the DC/DC converter is greater than or equal to a second target voltage;
and if so, controlling the DC/DC converter to exit the pre-charging working mode.
5. The method of claim 1, further comprising:
before the DC/DC converter pre-charges the pre-charging capacitor, judging whether the energy storage information of the low-voltage battery meets a first preset condition;
and if not, controlling the DC/DC converter to exit the pre-charging working mode.
6. The method of claim 1, wherein the voltage detection error comprises a detection error of the high-voltage battery voltage, a detection error of the pre-charge capacitor voltage, and a detection error of a high-side voltage of the DC/DC converter.
7. A precharge control apparatus, comprising:
the device comprises an acquisition module, a pre-charging module and a control module, wherein the acquisition module is used for acquiring the output voltage of a high-voltage battery and determining a pre-charging target voltage interval of a pre-charging capacitor based on the output voltage of the high-voltage battery, the maximum value of the pre-charging target voltage interval is a first target voltage, and the minimum value of the pre-charging target voltage interval is a second target voltage; the energy storage information is used for acquiring the energy storage information of the low-voltage battery, wherein the energy storage information comprises the output voltage and the state of charge of the low-voltage battery;
the first control module is used for responding to the condition that the energy storage information of the low-voltage battery meets a first preset condition, and controlling the DC/DC converter to pre-charge the pre-charging capacitor to a first target voltage;
the judgment module is used for judging whether the electric automobile meets a high-voltage electrifying condition or not under the condition that the voltage of the pre-charging capacitor reaches the first target voltage; if not, judging whether the voltage of the high-voltage side of the DC/DC converter is smaller than the second target voltage or not;
and the second control module is used for controlling the DC/DC converter to continuously pre-charge the pre-charge capacitor to the first target voltage under the condition that the voltage of the high-voltage side of the DC/DC converter is smaller than the second target voltage currently.
8. A computer storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer storage medium resides to perform the method of any one of claims 1-6.
9. A processor for running a program, the processor being arranged to run a computer program to perform the method of any of claims 1-6.
10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1-6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560404.0A CN114801876A (en) | 2022-05-23 | 2022-05-23 | Precharge control method, precharge control device, storage medium, processor and electronic device |
| PCT/CN2023/095786 WO2023226980A1 (en) | 2022-05-23 | 2023-05-23 | Pre-charge control method and apparatus, and storage medium, processor and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560404.0A CN114801876A (en) | 2022-05-23 | 2022-05-23 | Precharge control method, precharge control device, storage medium, processor and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114801876A true CN114801876A (en) | 2022-07-29 |
Family
ID=82517312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210560404.0A Pending CN114801876A (en) | 2022-05-23 | 2022-05-23 | Precharge control method, precharge control device, storage medium, processor and electronic device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114801876A (en) |
| WO (1) | WO2023226980A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384328A (en) * | 2022-09-06 | 2022-11-25 | 中国第一汽车股份有限公司 | Charging control method and device for electric automobile |
| CN116135573A (en) * | 2023-03-22 | 2023-05-19 | 小米汽车科技有限公司 | Pre-charging method, device, vehicle, storage medium and chip |
| WO2023226980A1 (en) * | 2022-05-23 | 2023-11-30 | 中国第一汽车股份有限公司 | Pre-charge control method and apparatus, and storage medium, processor and electronic apparatus |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003180003A (en) * | 2001-12-07 | 2003-06-27 | Honda Motor Co Ltd | Electric vehicle control device |
| CN106876813A (en) * | 2015-12-11 | 2017-06-20 | 深圳市比克动力电池有限公司 | A kind of method for pre-charging lithium ion batteries |
| CN107768757A (en) * | 2017-10-20 | 2018-03-06 | 西北工业大学 | A kind of fast charge method of single lithium battery internal resistance compensation |
| CN110829812A (en) * | 2019-11-13 | 2020-02-21 | 奇瑞新能源汽车股份有限公司 | High-voltage control system and method for electric automobile |
| CN111916852A (en) * | 2020-07-10 | 2020-11-10 | 广州小鹏汽车制造有限公司 | Power battery system capacitor pre-charging circuit and method, vehicle and storage medium |
| CN112087037A (en) * | 2020-09-29 | 2020-12-15 | 恒大新能源汽车投资控股集团有限公司 | Charging control system and control method |
| CN112455231A (en) * | 2020-01-10 | 2021-03-09 | 长城汽车股份有限公司 | Pre-charging control system and method of electric automobile and high-voltage power-on control system |
| CN113183761A (en) * | 2021-05-21 | 2021-07-30 | 东风汽车集团股份有限公司 | High-voltage pre-charging loop, high-voltage pre-charging method and high-voltage pre-charging system of electric automobile |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007042528B4 (en) * | 2007-09-07 | 2018-06-14 | Sew-Eurodrive Gmbh & Co Kg | System and method for precharging a DC link capacitor |
| CN105871026B (en) * | 2016-05-20 | 2018-08-10 | 广州汽车集团股份有限公司 | A kind of electric vehicle pre-charging device and its pre-charge method |
| CN108422889A (en) * | 2018-04-28 | 2018-08-21 | 东南（福建）汽车工业有限公司 | A kind of preliminary filling control circuit and control method for electric vehicle |
| CN114312391B (en) * | 2020-09-30 | 2023-08-08 | 比亚迪股份有限公司 | Pre-charge control system, method and vehicle |
| CN112531865A (en) * | 2020-12-22 | 2021-03-19 | 恒大新能源汽车投资控股集团有限公司 | Power battery system, charging method thereof, storage medium and vehicle control unit |
| CN114475254B (en) * | 2022-02-22 | 2023-11-14 | 中国第一汽车股份有限公司 | Electric automobile pre-charge control method and device, storage medium and electronic device |
| CN114801876A (en) * | 2022-05-23 | 2022-07-29 | 中国第一汽车股份有限公司 | Precharge control method, precharge control device, storage medium, processor and electronic device |
-
2022
- 2022-05-23 CN CN202210560404.0A patent/CN114801876A/en active Pending
-
2023
- 2023-05-23 WO PCT/CN2023/095786 patent/WO2023226980A1/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003180003A (en) * | 2001-12-07 | 2003-06-27 | Honda Motor Co Ltd | Electric vehicle control device |
| CN106876813A (en) * | 2015-12-11 | 2017-06-20 | 深圳市比克动力电池有限公司 | A kind of method for pre-charging lithium ion batteries |
| CN107768757A (en) * | 2017-10-20 | 2018-03-06 | 西北工业大学 | A kind of fast charge method of single lithium battery internal resistance compensation |
| CN110829812A (en) * | 2019-11-13 | 2020-02-21 | 奇瑞新能源汽车股份有限公司 | High-voltage control system and method for electric automobile |
| CN112455231A (en) * | 2020-01-10 | 2021-03-09 | 长城汽车股份有限公司 | Pre-charging control system and method of electric automobile and high-voltage power-on control system |
| CN111916852A (en) * | 2020-07-10 | 2020-11-10 | 广州小鹏汽车制造有限公司 | Power battery system capacitor pre-charging circuit and method, vehicle and storage medium |
| CN112087037A (en) * | 2020-09-29 | 2020-12-15 | 恒大新能源汽车投资控股集团有限公司 | Charging control system and control method |
| CN113183761A (en) * | 2021-05-21 | 2021-07-30 | 东风汽车集团股份有限公司 | High-voltage pre-charging loop, high-voltage pre-charging method and high-voltage pre-charging system of electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226980A1 (en) * | 2022-05-23 | 2023-11-30 | 中国第一汽车股份有限公司 | Pre-charge control method and apparatus, and storage medium, processor and electronic apparatus |
| CN115384328A (en) * | 2022-09-06 | 2022-11-25 | 中国第一汽车股份有限公司 | Charging control method and device for electric automobile |
| CN116135573A (en) * | 2023-03-22 | 2023-05-19 | 小米汽车科技有限公司 | Pre-charging method, device, vehicle, storage medium and chip |
| CN116135573B (en) * | 2023-03-22 | 2024-02-06 | 小米汽车科技有限公司 | Pre-charging method, device, vehicle, storage medium and chip |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023226980A1 (en) | 2023-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114801876A (en) | Precharge control method, precharge control device, storage medium, processor and electronic device | |
| CN106787055B (en) | A kind of charging circuit, system, method and terminal | |
| CN103119822B (en) | Electrical storage system and method for controlling electrical storage system | |
| CN110999023B (en) | Method and apparatus for balancing states of charge of individual cells of a battery system | |
| CN107994631A (en) | A kind of emergent electrification circuit, method and automobile | |
| KR101673822B1 (en) | Apparatus and method for detecting relay welding in green car | |
| CN109358548A (en) | A kind of charging method of automotive diagnostic system, vehicle diagnosis and automotive diagnostic unit | |
| CN105656118A (en) | Device supporting automatic switch of power-consumption/power-supply modes and equipment comprising device | |
| CN112803385A (en) | Discharging control method of vehicle-mounted charging circuit, vehicle-mounted charger and storage medium | |
| CN114475254B (en) | Electric automobile pre-charge control method and device, storage medium and electronic device | |
| CN107745643A (en) | Charge control method, device and automobile | |
| CN113541250A (en) | Battery charging control circuit and electronic equipment | |
| CN208006760U (en) | A kind of charging interface state detection circuit and rechargeable devices | |
| CN114567054A (en) | Control method and device and electronic equipment | |
| CN112158106B (en) | Charging control circuit of electric automobile with double battery systems and control method thereof | |
| CN113241835A (en) | Charging module, electronic equipment and charging control method | |
| CN218678522U (en) | Vehicle discharge system and vehicle | |
| CN114734841A (en) | V2G discharge control system and control method | |
| CN110429681A (en) | Battery management control system, method, apparatus and electronic product | |
| CN106786959B (en) | Charge control method, device and terminal | |
| CN115693881A (en) | Vehicle discharge system, control method thereof and vehicle | |
| CN113858986B (en) | Charging switching device, vehicle and method for identifying charging and discharging modes of vehicle | |
| CN114604109A (en) | Pre-charging device, system and pre-charging control method | |
| CN106230061A (en) | Charging method and charger | |
| CN105896662A (en) | Single-port mobile power control circuit and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |