CN107554340B - Battery pack cooling control method, device and system and vehicle - Google Patents
Battery pack cooling control method, device and system and vehicle Download PDFInfo
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- CN107554340B CN107554340B CN201710807636.0A CN201710807636A CN107554340B CN 107554340 B CN107554340 B CN 107554340B CN 201710807636 A CN201710807636 A CN 201710807636A CN 107554340 B CN107554340 B CN 107554340B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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 embodiment of the invention discloses a battery pack cooling control method, which comprises the following steps: acquiring GPS information of a geographical position of a vehicle, and determining road condition information of driving of the vehicle in the current and future period of time according to the GPS information and map information acquired by the vehicle; and determining whether the battery discharge amount needs to be increased compared with the current road condition or not in the future road condition, if so, cooling and controlling the battery pack in advance according to the preset cooling condition of the battery pack. The embodiment of the invention can cool the battery pack in advance when needed, ensure that the battery works at a proper temperature and improve the temperature feeling of the cockpit.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a battery pack cooling control method, device and system and a vehicle.
Background
The battery system is used as a core component of a pure electric vehicle or a hybrid electric vehicle, is the only or main power source of the vehicle, and plays a decisive role in the working performance of the vehicle. When the vehicle is driven under different driving conditions of alternating high speed, low speed, acceleration, deceleration and the like, the battery is discharged at different rates, heat is generated at different heat generation rates, and a large amount of heat is accumulated in consideration of time accumulation and space influence, so that the temperature of the battery pack rises. The rise in temperature within the package can severely impact the operation, cycle life and charge acceptability, package power and energy, safety and reliability of the electrochemical system of the battery.
In the process of implementing the present invention, the inventor finds that the prior art is to cool the battery pack in a feedback manner, that is, when the temperature rises to a certain value, the air conditioner starts to operate to cool the battery pack. This approach has at least the following problems: temperature regulation lags behind, and especially under some severe operating conditions, such as climbing or high-speed driving under the high temperature environment, the cooling demand of the battery pack is often required to be satisfied in a manner of reducing the refrigeration power of the passenger compartment, so that the driving and riding feeling of the automobile are reduced.
Disclosure of Invention
The embodiment of the invention aims to solve the technical problem that: provided are a battery pack cooling control method, device, system and vehicle, which can ensure that a battery always operates at an optimum temperature by performing feedforward cooling on a battery pack, prolong the service life of the battery, and improve driving and riding feelings.
The embodiment of the invention provides a battery pack cooling control method, which comprises the following steps: acquiring GPS information of the geographic position of the vehicle, and determining road condition information of the vehicle in the current and future period of time according to the GPS information and map information acquired by the vehicle; and determining whether the road condition in a future period of time needs to increase the battery discharge capacity compared with the current road condition, if so, cooling and controlling the battery pack in advance according to the preset battery pack cooling condition.
In another embodiment of the foregoing method according to the present invention, the method further includes: acquiring temperature information of a vehicle driving route point; and combining the air temperature information to determine whether the road condition in the future period of time needs to increase the battery discharge amount compared with the current road condition.
In another embodiment based on the above method of the present invention, the manner of determining the road condition in the future period of time needs to increase the battery discharge amount compared to the current road condition is as follows: and judging whether the temperature of the driving position of the vehicle is higher than a preset high-temperature threshold value or not according to the temperature information, and if so, determining that the battery discharge capacity needs to be increased compared with the current road condition in the future period of time.
In another embodiment based on the above method of the present invention, the manner of determining the road condition in the future period of time needs to increase the discharge capacity of the battery compared to the current road condition is as follows: and judging whether the temperature of the battery is higher than a preset high-temperature threshold value or not according to the temperature information, and if so, determining that the discharge capacity of the battery needs to be increased compared with the current road condition in the future period of time.
In another embodiment based on the above method of the present invention, the manner of determining the road condition in the future period of time needs to increase the battery discharge amount compared to the current road condition is as follows: and comparing the current road condition information with the road condition information in a future period of time when the temperature of the driving position of the vehicle is determined to be higher than a preset high-temperature threshold value or the temperature of the battery is determined to be higher than the preset high-temperature threshold value according to the air temperature information, and determining that the discharge capacity of the battery is required to be increased compared with the current road condition in the future period of time if the road condition in the future period of time is better than the current road condition.
In another embodiment of the above method according to the present invention, the performing of cooling control on the battery pack in advance according to preset battery pack cooling conditions includes: acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack; determining the current temperature of the battery pack, estimating the temperature of the battery pack under the future road condition, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter; and starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the future road condition.
An embodiment of the present invention further provides a battery pack cooling control apparatus, including: the road condition information acquisition unit is used for acquiring GPS information of the geographic position of the vehicle and determining the road condition information of the vehicle in the current and future period of time according to the GPS information and the map information acquired by the vehicle; the battery discharge capacity determining unit is used for determining whether the battery discharge capacity needs to be increased compared with the current road condition or not in the future road condition; and the cooling control unit is used for carrying out cooling control on the battery pack in advance according to the preset battery pack cooling condition.
In another embodiment of the above apparatus according to the present invention, further comprising: a temperature information acquisition unit for acquiring temperature information of a vehicle travel route point; and the battery discharge capacity determining unit is used for determining whether the battery discharge capacity needs to be increased compared with the current road condition or not in the road condition within a future period of time by combining the air temperature information.
In another embodiment of the above device according to the present invention, the battery discharge amount determination unit is specifically configured to determine whether the temperature of the driving location of the vehicle is higher than a preset high temperature threshold, and if so, determine that the battery discharge amount needs to be increased compared with the current road condition in a future period of time.
In another embodiment based on the above method of the present invention, the battery discharge amount determining unit is specifically configured to determine whether the battery temperature is higher than a preset high temperature threshold according to the air temperature information, and if so, determine that the discharge amount of the battery needs to be increased compared with the current road condition in a future period of time.
In another embodiment of the above device according to the present invention, the battery discharge amount determining unit is specifically configured to, when it is determined that the temperature of the driving location of the vehicle is higher than a preset high temperature threshold or the battery temperature is higher than a preset high temperature threshold according to the air temperature information, compare the current road condition information with the future road condition information, and if the road condition in a future period of time is the current road condition, determine that the battery discharge amount needs to be increased compared with the current road condition in the future period of time.
In another embodiment of the above apparatus according to the present invention, the cooling control unit includes: the battery pack parameter acquiring subunit is used for acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack; the condition determining subunit is used for determining the current temperature of the battery pack, estimating the temperature of the battery pack under the future road condition, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter; and the control subunit is used for starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the future road condition.
The embodiment of the invention also provides a vehicle battery pack control system, which comprises the battery pack cooling control device.
The embodiment of the invention also provides a vehicle which comprises a central control module, an instrument panel, a driving recorder, a HUD head-up display, an intelligent vehicle-mounted information entertainment system, an intelligent driving module and a power module, wherein the power module comprises any one of the battery pack cooling control devices.
Based on the battery pack cooling method, the battery pack cooling device, the battery pack cooling system and the vehicle, provided by the embodiment of the invention, the battery pack cooling requirement is judged in advance according to the GPS signal (or combined with temperature information), so that the battery is ensured to work at the optimal temperature all the time, the service life of the battery can be prolonged, and the thermal comfort of human bodies in the vehicle can be improved. The invention can avoid the situation that the thermal comfort of human bodies in the automobile is reduced due to the overhigh temperature of the battery pack under the severe working condition.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
The invention will be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of a battery pack cooling control method according to an embodiment of the present invention.
FIG. 2 is a flow chart of a battery pack cooling control method according to another embodiment of the present invention
Fig. 3 is a schematic structural diagram of a battery pack cooling control device according to an embodiment of the present invention.
FIG. 4 is a schematic structural diagram of a battery pack cooling control apparatus according to another embodiment of the present invention
Fig. 5 is a schematic structural diagram of a battery pack cooling control system according to an embodiment of the present invention.
Fig. 6 is a schematic view of a vehicle structure according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As previously analyzed, the prior art is to cool the battery pack through a feedback manner, that is, when the temperature rises to a certain value, the air conditioner starts to operate to cool the battery pack. This approach has at least the following problems: temperature regulation lags behind, and especially under some severe operating conditions, such as climbing or high-speed driving under the high temperature environment, the cooling demand of the battery pack is often required to be satisfied in a manner of reducing the refrigeration power of the passenger compartment, so that the driving and riding feeling of the automobile are reduced.
The inventor of the invention finds that, in the research process, taking a pure electric vehicle as an example, a power battery pack and a heat pump air conditioner are generally taken as a whole to carry out heat management so as to meet the heat management requirement of the battery pack of the pure electric vehicle and the requirement of thermal comfort of human bodies in the vehicle. Therefore, by selecting a proper air conditioning system of the electric automobile, the operation condition of the air conditioning system of the electric automobile and the cooling requirement of the power battery pack are comprehensively considered and solved, and the method has great significance for improving the performance of the pure electric automobile.
Referring to fig. 1, a method for controlling cooling of a battery pack according to an embodiment of the present invention includes the following steps S101 to S103.
S101: the method comprises the steps of obtaining GPS information of the geographic position of a vehicle, and determining road condition information of the vehicle in the current and future periods of time according to the GPS information and map information obtained by the vehicle.
In an optional mode, the GPS system or the position sensor in the vehicle can be used for acquiring the GPS information of the geographic position of the vehicle, the vehicle navigation system or the terminal navigation system is used for acquiring the map information of the vehicle, and the current road condition information and the road condition information of the vehicle in the future period can be determined by integrating the GPS information and the map information. The traffic information includes but is not limited to: uphill, downhill, freeway, ordinary road, town road, country road, congestion, pavement flatness, other vehicle and pedestrian conditions on the pavement, etc.
S102: and determining whether the battery discharge amount needs to be increased compared with the current road condition or not, if so, executing the step S103, otherwise, returning to execute the step S101.
In an alternative, it is determined whether the future road condition requires an increase in battery discharge compared to the current road condition by comparing the current road condition with the future road condition. It can be understood that if the road section is slowly driven to enter the unblocked road section or the road section is high-speed driven by the speed-limiting road section, the discharge capacity is required to be increased frequently to meet the requirement of accelerating the vehicle. For example, the current traffic information and the future traffic information are compared, and if it is predicted that the congested traffic will enter the unblocked traffic or the ordinary traffic will enter the expressway, it is determined that the future traffic will require an increase in the battery discharge amount compared to the current traffic. Therefore, in this example, if the vehicle knows that the congested road condition is improved to the unblocked road condition in front through the GPS navigation, or the vehicle is about to drive into the highway through the ordinary road, the air conditioner is turned on or the cooling power of the air conditioner is increased, so as to reduce the possibility of the battery pack having an excessively high temperature, and ensure that the battery always works in the optimal temperature range.
S103: and cooling the battery pack in advance according to preset battery pack cooling conditions.
In an optional mode, the battery pack cooling condition can be formulated by acquiring the key parameters of the battery pack in advance, referring to the key parameters of the battery pack and predicting the state of the battery pack under the current road condition and the future road condition, so that the battery pack is cooled and controlled in advance. Therefore, in this alternative, step S103 specifically includes the following implementation steps:
(1) acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack;
the thermal capacity and the allowable temperature rise are design parameters of the battery pack, and can be obtained in advance in index parameters of the battery pack.
(2) Determining the current temperature of the battery pack, estimating the temperature of the battery pack under the future road condition, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter;
the temperature of the battery pack from the current road condition to the specific future road condition under various conditions can be estimated through an experimental mode. For example, the current temperature of the battery pack can be obtained through a vehicle temperature sensor, and if the current road condition is a smooth city road section and the future road condition is an uphill road section with the length of 500 meters, the temperature of the battery pack under the future road condition is determined to be increased by 0.5 degrees on the basis of the current temperature of the battery pack through an experimental mode. Then, to ensure that this potential rise is cooled down 0.5 degrees ahead of time, the resulting heat capacity of the battery pack and the allowable temperature rise parameter are needed to determine how long ahead (feed forward time) it is necessary to turn on or increase the cooling power.
(3) And starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the future road condition.
The feedforward time, that is, the time for turning on the air conditioner or increasing the cooling power of the air conditioner, is calculated according to the road condition of the future, for example, if it is assumed that the vehicle enters the highway from the normal power after 10 minutes is predicted according to the GPS information and the map information, and the feedforward time is determined to be 8 minutes through the step (2), the air conditioner is turned on or the cooling power of the air conditioner is increased before 8 minutes (after 2 minutes from the current time) of entering the highway.
Therefore, according to the battery pack cooling control method provided by the embodiment of the invention, the battery pack cooling requirement is judged in advance according to the GPS signal, so that the battery pack is ensured to work at a proper temperature all the time, and meanwhile, the thermal comfort of the human body in the vehicle is ensured.
Referring to fig. 2, a method for controlling cooling of a battery pack according to an embodiment of the present invention includes the following steps S201 to S203.
S201: and acquiring GPS information of the geographic position of the vehicle, and determining road condition information of the current and future driving of the vehicle according to the GPS information and map information acquired by the vehicle.
In an optional mode, the GPS system or the position sensor in the vehicle can be used for acquiring the GPS information of the geographic position of the vehicle, the vehicle navigation system or the terminal navigation system is used for acquiring the map information of the vehicle, and the current road condition information and the future road condition information of the vehicle can be determined by integrating the GPS information and the map information. The traffic information includes but is not limited to: uphill, downhill, freeway, ordinary road, town road, country road, congestion, pavement flatness, other vehicle and pedestrian conditions on the pavement, etc.
S202: temperature information of a vehicle traveling route point is acquired.
In an alternative mode, the temperature information of the current position may be acquired through a vehicle intranet module through a network, or the temperature information may be acquired through a temperature sensor, or the temperature information may be acquired through a terminal (e.g., a mobile phone) and sent to a battery pack control system of the vehicle in a wireless or wired manner. Temperature information includes, but is not limited to: temperature, humidity, rainfall information, snowfall information, wind level, and the like.
S203: and (3) determining whether the battery discharge amount needs to be increased compared with the current road condition or not by combining the temperature information, if so, executing the step S204, otherwise, returning to execute the step S201.
In an alternative, it is determined whether the future road condition needs to increase the battery discharge amount compared to the current road condition by comparing the current road condition with the future road condition and combining the temperature information. It can be understood that in a high temperature environment, the temperature of the battery pack itself is high, and at this time, if the vehicle enters a long uphill road from a gentle road or enters a rugged road from a flat road, the battery discharge amount needs to be increased to satisfy the normal speed driving of the vehicle. In one example, the manner of determining that the future road condition requires an increase in the amount of battery discharge compared to the current road condition is: and judging whether the temperature of the driving position of the vehicle is higher than a preset high-temperature threshold value or not (namely determining that the current environment is a high-temperature environment) according to the temperature information, and if so, determining that the battery discharge amount needs to be increased compared with the current road condition when the future road condition is predicted to be a long uphill road section according to the road condition information of the future driving. Therefore, in the example, under the high-temperature condition, the automobile knows that a long slope exists in the front through the GPS navigation signal, the air conditioner is started in advance to reduce the temperature of the battery pack, so that when the automobile passes through the long slope, the battery pack has a large allowable temperature rise value, the cooling power requirement of the battery pack can be properly reduced, the air conditioning system is given a long self-adaption time, the influence on the refrigerating effect of the passenger compartment is reduced, and the purpose of not reducing the driving experience is achieved.
S204: and cooling the battery pack in advance according to preset battery pack cooling conditions.
In an optional mode, the battery pack cooling condition can be formulated by acquiring the key parameters of the battery pack in advance, referring to the key parameters of the battery pack and predicting the state of the battery pack under the current road condition and the future road condition, so that the battery pack is cooled and controlled in advance. Therefore, in this alternative, step S103 specifically includes the following implementation steps:
(1) acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack;
(2) determining the current temperature of the battery pack, predicting the temperature of the battery pack under a future road condition, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter;
(3) and starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the future road condition.
The feedforward time, that is, the time for turning on the air conditioner or increasing the cooling power of the air conditioner, is calculated according to the road condition of the future, for example, if it is predicted that the vehicle enters the highway from the ordinary highway after 10 minutes according to the GPS information and the map information, and it is determined by the step (2) that the feedforward time is 8 minutes, the air conditioner is turned on or the cooling power of the air conditioner is increased before 8 minutes (after 2 minutes from the current time) of entering the highway.
Therefore, the battery pack cooling control method provided by the embodiment can be used for judging the battery pack cooling requirement in advance according to the GPS signal and combining the temperature information, so that the thermal comfort of the human body in the vehicle and the working condition of the battery in the optimal temperature environment are ensured.
In correspondence with the above-described battery pack cooling control method shown in fig. 1, an embodiment of the present invention provides a battery pack cooling control apparatus, referring to fig. 3, the battery pack cooling control apparatus 300 including:
a road condition information obtaining unit 301, configured to obtain GPS information of a geographic location of a vehicle, and determine road condition information of the vehicle driving in the current and future according to the GPS information and map information obtained by the vehicle;
a battery discharge amount determination unit 302 for determining whether the future road condition needs to increase the battery discharge amount compared to the current road condition;
and a cooling control unit 303, configured to perform cooling control on the battery pack in advance according to preset battery pack cooling conditions.
In an alternative, the battery discharge amount determining unit 302 is specifically configured to compare the current road condition information with the future road condition information, and if the future road condition is predicted to be the current road condition, determine that the battery discharge amount needs to be increased compared with the current road condition for the future road condition.
In an alternative, the cooling control unit 303 includes:
a battery pack parameter obtaining subunit 3031, configured to obtain a thermal capacity parameter and an allowable temperature rise parameter of the battery pack;
the condition determining subunit 3032 is configured to determine a current battery pack temperature, estimate a battery pack temperature under a future road condition, and determine a feedforward time for cooling the battery pack and a required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter;
the control subunit 3033 is configured to start cooling the battery pack or increase cooling power of the battery pack at a feed-forward time before the vehicle travels to a future road condition.
In correspondence with the above-described battery pack cooling control method shown in fig. 2, an embodiment of the present invention provides a battery pack cooling control apparatus, and referring to fig. 4, the battery pack cooling control apparatus 400 includes:
a road condition information obtaining unit 401, configured to obtain GPS information of a geographic location of a vehicle, and determine road condition information of the vehicle driving in the current and future according to the GPS information and map information obtained by the vehicle;
a temperature information acquisition unit 402 for acquiring temperature information of a vehicle travel route point
A battery discharge amount determining unit 403, configured to determine, in combination with the air temperature information, whether the battery discharge amount needs to be increased compared with the current road condition in the future;
and a cooling control unit 404 for performing cooling control on the battery pack in advance according to preset battery pack cooling conditions.
In an alternative, the battery discharge amount determining unit 403 is specifically configured to determine whether the temperature of the driving location of the vehicle is higher than a preset high temperature threshold, and if so, determine that the battery discharge amount needs to be increased compared with the current road condition in the future.
In an alternative, the cooling control unit 404 includes:
a battery pack parameter obtaining subunit 4041, configured to obtain a thermal capacity parameter and an allowable temperature rise parameter of the battery pack;
the condition determining subunit 4042 is configured to determine a current temperature of the battery pack, predict a temperature of the battery pack under a future road condition, and determine a feedforward time for cooling the battery pack and a required cooling power according to the thermal capacity parameter and the allowable temperature rise parameter;
the control subunit 4043 is configured to start cooling the battery pack or increase cooling power to the battery pack at a feed-forward time before the vehicle travels to a future road condition.
Corresponding to the above battery pack cooling control method and device, an embodiment of the invention further provides a vehicle battery pack control system, and referring to fig. 5, a schematic structural diagram of the system is provided. The vehicle battery pack control system 500 includes a battery pack cooling control apparatus as described in fig. 3 or fig. 4. Specifically, please refer to fig. 3 and 4 and the related descriptions for the internal functional modules of the battery pack cooling control apparatus 300 or 400.
The embodiment of the invention also provides a vehicle.
Fig. 6 shows a block diagram of a vehicle according to an embodiment of the present invention, which may include, as shown in fig. 6: a central control module, a dashboard 610, a vehicle data recorder 611, a HUD (Head Up Display) Head-Up Display 612, an intelligent in-vehicle infotainment system 613, and an intelligent driving module 613.
Dashboard 610 has a 12.3 inch LCD display device, which may be implemented with the TI J6 CPU; the operating system of the dashboard may be based on a QNX embedded system, and the dashboard may be used to display vehicle status including speed, rotational speed, electrical quantity, tire pressure, vehicle parking, gear, etc., a map, vehicle navigation information, vehicle music play, etc. The HUD heads-up display 612 may display GPS navigation information, navigation path information, time information, and the like.
In one embodiment, the smart driving module 614 may be used to process operations related to smart driving, and the smart driving module 614 may include Advanced Driver Assistance Systems (ADAS), active safety Systems, Attention Assistance Systems (AAS), Fatigue Warning Systems (FWS), Vehicle intelligent Acoustic alert Systems (AVAS), and the like. The vehicle can be intelligently driven by combining an ADAS system and the like, and the intelligent driving can be completely unmanned driving or can be advanced auxiliary driving functions such as auxiliary merging and lane deviation for driving control of a driver.
The central control device can be composed of a plurality of modules, and mainly comprises: a main board 601; a Serial Advanced Technology Attachment (SATA) module 602 connected to a storage device such as SSD603, which may be used to store data information; an AM (Amplitude Modulation)/FM (Frequency Modulation) module 604 for providing the vehicle with a radio function; a power amplifier module 605 for processing sound; a WIFI (Wireless-Fidelity)/Bluetooth module 606 for providing WIFI/Bluetooth service for the vehicle; an LTE (long term Evolution ) communication module 607 for providing a communication function with a telecommunications carrier for a vehicle; a power module 608, wherein the power module 608 provides power for the central control device; the Switch switching module 609 can be used as an expandable interface to connect various sensors, for example, a night vision function sensor and a PM2.5 function sensor if needed, and can be connected to a main board of the central control device through the Switch switching module 609, so that a processor of the central control device processes data and transmits the data to a central control display.
In one embodiment, the vehicle further includes a look-around camera, an ADAS camera, a night vision camera, a millimeter wave radar, an ultrasonic radar, an ESR radar, or the like. After the vehicle hardware is produced, the intelligent driving related hardware is mounted, and in the later stage, the automatic driving related functions can be completed by using the hardware through OTA (over the air) upgrading.
In one embodiment, the power module 608 of the vehicle includes the battery pack cooling control apparatus shown in fig. 3 or fig. 4. Specifically, please refer to fig. 3 and 4 and the related descriptions for the internal functional modules of the battery pack cooling control apparatus 300 or 400.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The method and apparatus of the present invention may be implemented in a number of ways. For example, the methods and apparatus of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (12)
1. A battery pack cooling control method, comprising:
acquiring GPS information of the geographic position of the vehicle, and determining road condition information of the vehicle in the current and future period of time according to the GPS information and map information acquired by the vehicle;
the method comprises the steps of obtaining temperature information of a vehicle running route, determining whether the road condition in a future period needs to increase the battery discharge capacity compared with the current road condition or not by combining the temperature information, and if so, controlling the battery pack to be cooled by starting refrigeration of the battery pack or increasing the refrigeration power of the battery pack in advance according to preset battery pack cooling conditions.
2. The method of claim 1, wherein the determining the road condition in the future period of time requires increased battery discharge compared to the current road condition is performed by:
and judging whether the air temperature at the driving position of the vehicle is higher than a preset high-temperature threshold value or not according to the air temperature information, and if so, determining that the road condition in a future period of time needs to increase the discharge capacity of the battery compared with the current road condition.
3. The method of claim 1, wherein determining the road condition in the future period of time requires an increase in the amount of battery discharge compared to the current road condition is performed by:
and judging whether the temperature of the battery is higher than a preset high-temperature threshold value or not according to the temperature information, and if so, determining that the discharge capacity of the battery needs to be increased compared with the current road condition in the future period of time.
4. The method of claim 1, wherein determining the road condition in the future period of time requires an increase in the amount of discharge of the battery compared to the current road condition is by:
and judging whether the air temperature of the driving position of the vehicle is higher than a preset high-temperature threshold or not or whether the temperature of the battery is higher than a preset high-temperature threshold or not according to the air temperature information, if so, comparing the current road condition information with the future road condition information, and if the road condition in the future period is better than the current road condition, determining that the battery discharge capacity needs to be increased compared with the current road condition in the future period.
5. The method according to any one of claims 1 to 4, wherein the cooling control of the battery pack in advance according to the preset battery pack cooling condition comprises:
acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack;
determining the current temperature of the battery pack, estimating the heating power of the battery pack under the road condition within a period of time in the future, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter;
and starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the road condition for a period of time in the future.
6. A battery pack cooling control apparatus, comprising:
the road condition information acquisition unit is used for acquiring GPS information of the geographic position of the vehicle and determining the road condition information of the vehicle in the current and future period of time according to the GPS information and the map information acquired by the vehicle;
the battery discharge capacity determining unit is used for acquiring the air temperature information of a vehicle running route, and determining whether the battery discharge capacity needs to be increased compared with the current road condition or not in the road condition in a future period by combining the air temperature information;
and the cooling control unit is used for controlling the cooling of the battery pack in advance by starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack according to the preset cooling condition of the battery pack.
7. The apparatus according to claim 6, wherein the battery discharge amount determining unit is specifically configured to determine whether the air temperature at the driving location of the vehicle is higher than a preset high temperature threshold, and if so, determine that the road condition in a future period of time needs to increase the discharge amount of the battery compared with the current road condition.
8. The device according to claim 6, wherein the battery discharge amount determining unit is specifically configured to determine whether the battery temperature is higher than a preset high temperature threshold, and if so, determine that the battery discharge amount needs to be increased compared with the current road condition in a future period of time.
9. The apparatus according to claim 6, wherein the battery discharge amount determining unit is specifically configured to determine whether the air temperature at the driving location of the vehicle is higher than a preset high temperature threshold or whether the battery temperature is higher than a preset high temperature threshold according to the air temperature information, if so, compare the current road condition information with the future road condition information, and if the road condition in the future period is better than the current road condition, determine that the discharge amount of the battery needs to be increased compared with the current road condition in the future period.
10. The apparatus according to any one of claims 6 to 9, wherein the cooling control unit comprises:
the battery pack parameter acquiring subunit is used for acquiring a heat capacity parameter and an allowable temperature rise parameter of the battery pack;
the condition determining subunit is used for determining the current temperature of the battery pack, estimating the temperature of the battery pack under the future road condition, and determining the feedforward time for cooling the battery pack and the required refrigeration power according to the heat capacity parameter and the allowable temperature rise parameter;
and the control subunit is used for starting the refrigeration of the battery pack or increasing the refrigeration power of the battery pack at the feedforward time before the vehicle runs to the future road condition.
11. A vehicle battery pack control system, characterized in that the system comprises the battery pack cooling control apparatus according to any one of claims 6 to 10.
12. A vehicle comprising a central control module, a dashboard, a tachograph, a HUD heads-up display, an intelligent in-vehicle infotainment system, an intelligent drive module, and a power module, wherein the power module comprises the battery pack cooling control apparatus of any one of claims 6 to 10.
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| CN108417906B (en) * | 2018-01-10 | 2020-06-02 | 中山大学 | Battery management system with intelligent thermal management system control function |
| CN108909457A (en) * | 2018-07-04 | 2018-11-30 | 北汽福田汽车股份有限公司 | Electric car and its lower electric control method, device and system |
| US20210394644A1 (en) * | 2019-01-14 | 2021-12-23 | Cummins Inc. | Predicted cooling control systems and methods for electric vehicles |
| CN110176657B (en) * | 2019-06-06 | 2021-07-06 | 华霆（合肥）动力技术有限公司 | Thermal management method and apparatus |
| EP3771593B1 (en) * | 2019-07-30 | 2023-04-05 | Volvo Car Corporation | Method and system for predictive battery thermal management in an electric vehicle |
| CN112519635B (en) * | 2019-09-17 | 2023-10-20 | 深圳市英维克科技股份有限公司 | Control method and related device for battery thermal management |
| CN114454777B (en) * | 2020-11-10 | 2024-07-16 | 长城汽车股份有限公司 | Power battery thermal management method and device, medium and electronic equipment |
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