CN217335194U - Electric automobile power supply redundancy control system and electric automobile - Google Patents
Electric automobile power supply redundancy control system and electric automobile Download PDFInfo
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Abstract
The utility model provides an electric automobile power supply redundancy control system and electric automobile, this system includes: the power supply comprises a microprocessor, a power supply isolation module and a plurality of power supply modules; wherein each of the plurality of power modules comprises: the device comprises a storage battery and a DCDC converter connected with the storage battery; the input end of the power isolation module is respectively connected with each power module, and the output end of the power isolation module is used for being connected with a power supply load; the microprocessor is respectively in communication connection with each power supply module and the power supply isolation module, and is used for controlling the power supply isolation module according to the state information of each power supply module so that at least one power supply module in a normal state supplies power to the power supply load. The utility model discloses a redundancy of power supply source has been guaranteed to the system, also can not influence another power module's state when switching power supply, has improved electric automobile's power supply safety.
Description
Technical Field
The utility model relates to an electric automobile electrical power generating system technical field especially relates to an electric automobile power supply redundancy control system and electric automobile.
Background
With the rapid development of modern society, the number of intelligent and electric electronic devices on the electric automobile is increasing, and the design and control of the redundant power supply are in line with the development of the times and are urgently needed.
In the prior art, when a main power supply is in power failure or fails, the normal running of a vehicle is kept through a standby power supply. However, in the design scheme of the existing electric vehicle based on the redundant power supply control system, on one hand, when one path of power supply fails, the other path of power supply is also affected when the power supply is switched; on the other hand, when multiple power sources fail simultaneously, critical systems fail due to power supply problems. The normal running of the vehicle is still affected by the problems, and traffic accidents are easily caused.
Therefore, the electric vehicle needs a design scheme of a redundant power supply capable of meeting the requirement of power supply safety so as to improve the power supply safety of the electric vehicle and further ensure the driving safety of the electric vehicle in the driving process.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric automobile power supply redundancy control system and electric automobile for improve electric automobile's power supply safety, and then ensure the safety of traveling of electric automobile in the driving process.
An aspect of the utility model provides an electric automobile power supply redundancy control system, include: the power supply comprises a microprocessor, a power supply isolation module and a plurality of power supply modules;
wherein each of the plurality of power modules comprises: the device comprises a storage battery and a DCDC converter connected with the storage battery;
the input end of the power isolation module is respectively connected with each power module, and the output end of the power isolation module is used for being connected with a power supply load;
the microprocessor is respectively in communication connection with each power supply module and the power supply isolation module, and is used for controlling the power supply isolation module according to the state information of each power supply module so that at least one power supply module in a normal state supplies power to the power supply load.
Optionally, the plurality of power modules comprises a main power module and a redundant power module;
the main power supply module includes: the system comprises a main storage battery, a first DCDC converter and a first storage battery monitoring sensor, wherein the main storage battery is respectively connected with the first DCDC converter and the first storage battery monitoring sensor, and the first storage battery monitoring sensor is used for acquiring state information of the main storage battery;
the redundant power supply module includes: the auxiliary storage battery is respectively connected with the second DCDC converter and the second storage battery monitoring sensor, and the second storage battery monitoring sensor is used for acquiring state information of the auxiliary storage battery.
Optionally, if the main power module is a power module currently used for supplying power to the power supply load, when the state information of the main power module is abnormal, the microprocessor controls the power isolation module to switch from the main power module to the redundant power module to supply power to the power supply load; or,
if the redundant power supply module is a power supply module which is currently used for supplying power to the power supply load, when the state information of the redundant power supply module is abnormal, the microprocessor controls the power supply isolation module to switch from the redundant power supply module to the main power supply module to supply power to the power supply load.
Optionally, the main battery and the auxiliary battery are both low-voltage batteries.
Optionally, the electric vehicle power supply redundancy control system further includes: the key component is an electric component which needs to continuously maintain power supply on the electric automobile;
the key component is connected with the power isolation module, and the power isolation module is used for supplying power to the key component when the main power module and the redundant power module are switched.
Optionally, the key components include an automatic drive area controller (ADCU), an electronically controlled power steering system (EHPS), and an Electronic Braking System (EBS).
Optionally, a switch for controlling the main power supply module and the redundant power supply module is arranged in the power isolation module;
if the main power supply module or the redundant power supply module has a short circuit, the power supply isolation module cuts off the connection with the power supply module with the short circuit through the switch, so that the power supply module without the short circuit can be normally used.
Optionally, the power supply redundancy control system for an electric vehicle further includes: a fault monitoring processing module;
and the fault monitoring processing module is used for monitoring and storing fault information of the electric vehicle power supply redundancy control system.
Optionally, the electric vehicle power supply redundancy control system further includes: a power management module;
the power management module is used for acquiring the electric energy information of the main power supply module and the redundant power supply module and displaying corresponding alarm information according to the electric energy information.
Another aspect of the present invention is to provide an electric vehicle, including the electric vehicle power supply redundancy control system as described in any one of the above.
The utility model provides an electric automobile power supply redundancy control system and an electric automobile, wherein the electric automobile power supply redundancy control system comprises a microprocessor, a power supply isolation module and a plurality of power supply modules; wherein each of the plurality of power modules comprises: the device comprises a storage battery and a DCDC converter connected with the storage battery; the input end of the power isolation module is respectively connected with each power module, and the output end of the power isolation module is used for being connected with a power supply load; the microprocessor is respectively in communication connection with each power supply module and the power supply isolation module, and is used for controlling the power supply isolation module according to the state information of each power supply module so that at least one power supply module in a normal state supplies power to the power supply load. Because every power module contains respective battery and the DCDC converter of being connected with the battery, guaranteed the redundancy of power supply source, every power module is independent control system moreover, connects the back through the power isolator, and when power module appeared unusually, when needing to switch power supply, the switching process can not influence the state of another power module, has improved electric automobile's power supply safety.
Drawings
The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood from the following detailed description with reference to the accompanying drawings. Embodiments of the invention will be described, by way of example and not by way of limitation, in the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a power supply redundancy control system of an electric vehicle according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply redundancy control system of an electric vehicle according to an embodiment of the present invention.
Reference numeral 1: 101-microprocessor, 102-power isolation module, 103-power supply load, 104-power module, 105-power module;
reference numeral 2: 201-a microprocessor, 202-a power isolation module, 2021-a switch 1, 2022-a switch 2, 203-a power supply load, 204-a main power module, 2041-a main storage battery, 2042-a first DCDC converter, 2043-a first storage battery monitoring sensor, 205-a redundant power module, 2051-an auxiliary storage battery, 2052-a second DCDC converter, 2053-a second storage battery monitoring sensor and 206-key components.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, 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, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, 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 the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
With the improvement of living standard and the rapid development of automobile technology, consumers have higher and higher requirements on the configuration of various vehicles, and intelligent and electric electronic equipment on automobiles is also more and more. High-level automatic driving intelligent networked electric vehicles need a scheme with functional safety and redundant power supply design so as to improve the power supply safety of intelligent driving vehicles.
Therefore, the utility model provides an electric automobile power supply redundancy control system, through the power module who sets up independent control, the switching of no interference between the power is realized to rethread power isolator to among the solution prior art, when the power of wherein all the way breaks down, the power of the other way receives the potential safety hazard of influence equally.
In order to explain the technical solution of the present invention, the following detailed description will be made by referring to the specific embodiments in conjunction with the accompanying drawings.
Example one
Fig. 1 is a schematic structural diagram of a power supply redundancy control system of an electric vehicle according to an embodiment of the present invention. As shown in fig. 1, a power redundancy control system for an electric vehicle according to a first embodiment of the present invention includes: microprocessor 101, power isolation module 102, and a plurality of power modules, shown in fig. 1 as 2 power modules 104 and 105.
Wherein each of the plurality of power modules includes: the device comprises a storage battery and a DCDC converter connected with the storage battery; the input end of the power isolation module 102 is connected to each power module, and the output end of the power isolation module is used for being connected to the power supply load 103.
That is, as shown in fig. 1, the power module 104 includes a secondary battery 1 and DCDC1, and the power module 105 includes a secondary battery 2 and DCDC 2. The input end of the power isolation module 102 is connected to the power module 104 and the power module 105, respectively, and the output end is connected to the power supply load 103 to provide power for the power supply load.
The microprocessor 101 is in communication connection with each power module and the power isolation module 102, and the microprocessor 101 is configured to control the power isolation module 102 according to the state information of each power module, so that at least one power module in a normal state supplies power to the power supply load 103.
Specifically, the microprocessor 101 is communicatively connected to the power supply module 104, the power supply module 105 and the power isolation module 102, and may be a CAN bus or a LIN bus, which is not limited in this application.
The state information of each power module includes the state of health of the storage battery and the state information of the DCDC converter, and the microprocessor 101 controls the power isolation module 102 according to the state information uploaded by the CAN bus or the LIN bus, so that at least one power module 104 or 105 in a normal state supplies power to the power supply load 103.
The electric automobile power supply redundancy control system that this embodiment provided, because every power module contains respective battery and the DCDC converter of being connected with the battery, the redundancy of power supply source has been guaranteed, and every power module is independent control system, connect the back through the power isolator, appear unusually as power module, when needing to switch power supply, can not influence the state by switching power module in the switching process, can improve the power supply safety of intelligent driving vehicle, and then ensure the safety of traveling of vehicle in the driving process.
Example two
Fig. 2 is a schematic structural diagram of a power supply redundancy control system of an electric vehicle according to an embodiment of the present invention. As shown in fig. 2, on the basis of the first embodiment, the plurality of power modules includes a main power module 204 and a redundant power module 205.
The main power supply module 204 includes: the main battery 2041, the first DCDC converter 2042, and the first battery monitoring sensor 2043, wherein the main battery 2041 is connected to the first DCDC converter 2042 and the first battery monitoring sensor 2043, respectively, and the first battery monitoring sensor 2043 is configured to acquire state information of the main battery 2041.
The redundant power supply module 205 includes: the auxiliary storage battery 2051, the second DCDC converter 2052, and the second storage battery monitoring sensor 2053, wherein the auxiliary storage battery 2051 is connected to the second DCDC converter 2052 and the second storage battery monitoring sensor 2053, and the second storage battery monitoring sensor 2053 is used to acquire the state information of the auxiliary storage battery 2051.
The state information of the main storage battery 2041 and the state information of the auxiliary storage battery 2051 include one or more pieces of information that can indicate whether the storage battery operates normally or abnormally, such as voltage, current, and surface temperature of the storage battery, which is not limited in this embodiment. In some embodiments, a threshold value may be set, and when the state information of the battery, such as voltage, current, and surface temperature, is not within the threshold value range, the battery may be considered to be abnormally operated.
The main storage battery 2041 and the auxiliary storage battery 2051 are provided with corresponding storage battery monitoring sensors to monitor the state information of the main storage battery 2041 and the auxiliary storage battery 2051 in real time, and the health states of the main storage battery 2041 and the auxiliary storage battery 2051 are fed back to the microprocessor 201 in real time through a CAN (controller area network) bus or a LIN (local interconnect network) bus, so that the monitoring of the vehicle storage battery is more accurate, and the power supply redundancy control system of the electric automobile is more accurately controlled.
Optionally, if the main power module 204 is a power module currently used for supplying power to the power supply load 203, when the state information of the main power module 204 is abnormal, the microprocessor 201 controls the power isolation module 202 to switch from the main power module 204 to the redundant power module 205 to supply power to the power supply load 203; or,
if the redundant power module 205 is a power module currently used for supplying power to the power supply load 203, when the state information of the redundant power module 205 is abnormal, the microprocessor 201 controls the power isolation module 202 to switch from the redundant power module 205 to the main power module 204 to supply power to the power supply load 203.
Optionally, the primary battery 2041 and the secondary battery 2051 are both low voltage batteries.
Specifically, the state information of the main power supply module 204 is abnormal, which may be an abnormality of the main storage battery 2041, such as an open circuit or a damage of the main storage battery, or an abnormality of the first DCDC converter 2042, such as a failure of the first DCDC converter system.
If the main power module 204 is a power module currently used for supplying power to the power supply load 203, when the state information of the main power module 204 is abnormal, for example, the main power module 204 has a short-circuit fault, the microcontroller 201 controls the power isolation module 202 to cut off the power supply of the main power module 204 instantly, and switches to the redundant power module 205 to supply power to the power supply load 203.
If the main storage battery 2041 is a low-voltage storage battery, when the first DCDC converter system fails, the low-voltage storage battery can buffer the fluctuation of the main power module 204 at the moment of switching the power supply; or when the output power of the first DCDC converter 2042 is not sufficient, the low-voltage battery may be supplemented accordingly; the power supply safety and stability of the whole electric automobile power supply redundancy control system are improved.
The redundant power module 205 is implemented in the same manner as the main power module 204 for the power module currently used to supply the power load 203. If the redundant power module 205 is a power module currently used for supplying power to the power supply load 203, when the status information of the redundant power module 205 is abnormal, for example, the redundant power module 205 has a short-circuit fault, the microcontroller 201 controls the power isolation module 202 to cut off the power supply of the redundant power module 205 in a moment, and switches to the main power module 204 to supply power to the power supply load 203.
The present application does not limit how the power isolation module 202 can instantly cut off the power supply of the main power module 204 or the redundant power module 205.
In some embodiments, the power isolation module 202 is provided with a switch for controlling the main power module 204 and the redundant power module 205; if the main power module 204 or the redundant power module 205 is short-circuited, the power isolation module 202 cuts off the connection with the power module with the short-circuited power module through a switch, so that the power module without the short-circuited power module can be normally used.
Illustratively, in fig. 2, a switch 2021 and a switch 2022 are disposed in the power isolation module 202, the switch 2021 controls the connection of the power isolation module 202 to the main power module 204, and the switch 2022 controls the connection of the power isolation module 202 to the redundant power module 205. When the main power module 204 is short-circuited, the power isolation module 202 cuts off the connection with the main power module 204 through the switch 2021, so that the redundant power module 205 is normally used; when the redundant power supply module 205 is short-circuited, the power isolation module 202 cuts off the connection with the redundant power supply module 205 through the switch 2022, so that the main power supply module 204 is normally used.
Optionally, in some embodiments, the electric vehicle power supply redundancy control system further includes: the key component 206, the key component 206 is an electric component on the electric vehicle which needs to continuously maintain power supply; the critical component 206 is connected to the power isolation module 202, and the power isolation module 202 is configured to supply power to the critical component 206 when switching between the primary power module 204 and the redundant power module 205 occurs.
The key component 206 is an electric control component closely related to the braking of the vehicle, and if the key component 206 fails, the normal use of the vehicle is seriously affected, and even a safety accident is caused.
Because the critical component 206 is directly connected to the power isolation module 202, the power isolation module 202 can supply power to the critical component 206 when the power supply is switched, so that the critical component 206 cannot fail due to the switching of the power supply, thereby causing a safety accident.
Illustratively, the critical components 206 may include an automatic drive domain controller (ADCU), an electronically controlled power steering system (EHPS), and an Electronic Braking System (EBS).
If the automatic driving area controller (ADCU), the electric control power steering system (EHPS) and the Electronic Brake System (EBS) fail to supply power, traffic accidents may be caused, and loss of people and property may be caused.
Therefore, if the automatic driving area controller (ADCU), the electronically controlled power steering system (EHPS) and the Electronic Brake System (EBS) are directly connected to the power isolation module 202, the power isolation module 202 can supply power to the vehicle, thereby avoiding safety problems caused by power failure and improving power supply safety of the vehicle.
According to the electric vehicle power supply redundancy control system provided by the embodiment, on the basis of the first embodiment, each storage battery further comprises a corresponding storage battery monitoring sensor, so that the monitoring accuracy of the storage battery can be improved; the main storage battery and the auxiliary storage battery are set to be low-voltage storage batteries so as to reduce the fluctuation of the power module or compensate the response when the power module breaks down; the power supply isolation module supplies power to the key components, so that the key components cannot fail due to power supply switching; the power supply safety of the electric automobile is improved, and the driving safety of the electric automobile in the driving process is further improved.
Further optionally, in some embodiments, the electric vehicle power supply redundancy control system further includes: a fault monitoring processing module; and the fault monitoring processing module is used for monitoring and storing fault information of the electric vehicle power supply redundancy control system.
Specifically, the fault monitoring and processing module can monitor and store fault information of the electric vehicle power supply redundancy control system, and when the electric vehicle power supply redundancy control system fails, an alarm is sent out and the fault information is stored so that a driver can conveniently overhaul the electric vehicle power supply redundancy control system.
Optionally, in some embodiments, the electric vehicle power supply redundancy control system further includes: a power management module; the power management module is used for acquiring the electric energy information of the main power supply module and the redundant power supply module and displaying corresponding alarm information according to the electric energy information.
Specifically, the power management module can acquire electric energy information such as voltage, current, electric quantity and the like of the main power module and the redundant power module, and display corresponding alarm information according to the electric energy information.
Illustratively, when the voltage and the current of the main power supply module and/or the redundant power supply module are too high or too low, abnormal information of the too high or too low voltage and current is displayed to prompt the attention of a driver; or when the electric quantity of the main power supply module and/or the redundant power supply module is insufficient or full, displaying information for reminding charging or completion of charging.
Further, the utility model also provides an electric automobile, include as aforementioned arbitrary electric automobile power supply redundancy control system.
The above description has been made in detail with reference to the accompanying drawings, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the invention as long as it does not violate the idea of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. An electric vehicle power supply redundancy control system, characterized by comprising: the power supply comprises a microprocessor, a power supply isolation module and a plurality of power supply modules;
wherein each of the plurality of power modules comprises: the device comprises a storage battery and a DCDC converter connected with the storage battery;
the input end of the power isolation module is respectively connected with each power module, and the output end of the power isolation module is used for being connected with a power supply load;
the microprocessor is respectively in communication connection with each power supply module and the power supply isolation module, and is used for controlling the power supply isolation module according to the state information of each power supply module so that at least one power supply module in a normal state supplies power to the power supply load.
2. The electric vehicle power supply redundancy control system of claim 1, wherein the plurality of power supply modules comprises a main power supply module and a redundant power supply module;
the main power supply module includes: the system comprises a main storage battery, a first DCDC converter and a first storage battery monitoring sensor, wherein the main storage battery is respectively connected with the first DCDC converter and the first storage battery monitoring sensor, and the first storage battery monitoring sensor is used for acquiring state information of the main storage battery;
the redundant power supply module includes: the auxiliary storage battery is respectively connected with the second DCDC converter and the second storage battery monitoring sensor, and the second storage battery monitoring sensor is used for acquiring state information of the auxiliary storage battery.
3. The electric vehicle power supply redundancy control system according to claim 2, wherein if the main power supply module is a power supply module currently used for supplying power to the power supply load, the microprocessor controls the power supply isolation module to switch from the main power supply module to the redundancy power supply module to supply power to the power supply load when the status information of the main power supply module is abnormal; or,
if the redundant power supply module is a power supply module which is currently used for supplying power to the power supply load, when the state information of the redundant power supply module is abnormal, the microprocessor controls the power supply isolation module to switch from the redundant power supply module to the main power supply module to supply power to the power supply load.
4. The electric vehicle power supply redundancy control system of claim 3, wherein the primary battery and the secondary battery are both low voltage batteries.
5. The electric vehicle power supply redundancy control system according to claim 4, further comprising: the key component is an electric component which needs to continuously maintain power supply on the electric automobile;
the key component is connected with the power isolation module, and the power isolation module is used for supplying power to the key component when the main power module and the redundant power module are switched.
6. The redundant control system of electric vehicle power supply of claim 5, wherein the key components include an autopilot domain controller, an electronically controlled power steering system, and an electronic braking system.
7. The electric vehicle power supply redundancy control system according to any one of claims 2 to 6, wherein a switch for controlling the main power supply module and the redundancy power supply module is arranged in the power supply isolation module;
if the main power supply module or the redundant power supply module has a short circuit, the power supply isolation module cuts off the connection with the power supply module with the short circuit through the switch, so that the power supply module without the short circuit can be normally used.
8. The electric vehicle power supply redundancy control system according to any one of claims 1 to 6, further comprising: a fault monitoring processing module;
and the fault monitoring processing module is used for monitoring and storing the fault information of the electric vehicle power supply redundancy control system.
9. The electric vehicle power supply redundancy control system according to any one of claims 2 to 6, further comprising: a power management module;
the power management module is used for acquiring the electric energy information of the main power supply module and the redundant power supply module and displaying corresponding alarm information according to the electric energy information.
10. An electric vehicle characterized by comprising the electric vehicle power supply redundancy control system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221090183.7U CN217335194U (en) | 2022-05-06 | 2022-05-06 | Electric automobile power supply redundancy control system and electric automobile |
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| CN202221090183.7U CN217335194U (en) | 2022-05-06 | 2022-05-06 | Electric automobile power supply redundancy control system and electric automobile |
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