CN215436303U - Vehicle control system and vehicle with same - Google Patents
Vehicle control system and vehicle with same Download PDFInfo
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- CN215436303U CN215436303U CN202121753561.0U CN202121753561U CN215436303U CN 215436303 U CN215436303 U CN 215436303U CN 202121753561 U CN202121753561 U CN 202121753561U CN 215436303 U CN215436303 U CN 215436303U
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Abstract
The utility model discloses a vehicle control system and a vehicle with the same, comprising: the control module is used for outputting a control PWM pulse signal; the state acquisition module is connected with the control module and used for acquiring the state of the control module and outputting an enabling signal according to the state of the control module; the wave locking module is connected with the control module and the state acquisition module, receives the control PWM pulse signal and the enable signal, and outputs the control PWM pulse signal or a preset protection pulse signal according to the enable signal; the IGBT driving module is connected with the wave locking module and used for receiving the control PWM pulse signal or the preset protection pulse signal output by the wave locking module; and the IGBT module is connected to the IGBT driving module. The vehicle control system has the advantages of high safety, small size, low cost and the like.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a vehicle control system and a vehicle with the same.
Background
The new energy automobile develops rapidly in recent years, and shows explosive growth in recent years, along with the rapid development of electric automobiles, the reliability and safety of a power battery and an electric drive system are more and more emphasized, and the safety design of the electric drive system is mainly embodied on an electric control system.
In a vehicle control system in the related art, usually, a control module outputs a PWM wave and directly controls an IGBT driving module after level conversion, in order to ensure safety and reliability of the PWM wave, the IGBT driving module can be controlled to be reliably turned off when the control module is abnormal, so that a Programmable logic device (CPLD) circuit is added between the control module and the IGBT driving module, the CPLD can monitor whether the control module is in abnormal states such as dead halt, overvoltage, and overcurrent, and the control module is in an abnormal state, and the IGBT driving module is reliably turned off by a three-phase short circuit or a six-phase open circuit, but the vehicle control system has the problems of high cost, large size and the like due to the arrangement of the CPLD circuit.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a vehicle control system having advantages of high safety, small size, and low cost.
The utility model also provides a vehicle with the vehicle control system.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a vehicle control system including: the control module is used for outputting a control PWM pulse signal; the state acquisition module is connected with the control module and used for acquiring the state of the control module and outputting an enabling signal according to the state of the control module; the wave locking module is connected with the control module and the state acquisition module, receives the control PWM pulse signal and the enabling signal, and outputs the control PWM pulse signal or a preset protection pulse signal according to the enabling signal; the IGBT driving module is connected with the wave locking module and used for receiving the control PWM pulse signal or the preset protection pulse signal output by the wave locking module; and the IGBT module is connected to the IGBT driving module.
The vehicle control system has the advantages of high safety, small size, low cost and the like.
According to some embodiments of the present invention, the state acquisition module is a low voltage power supply module and is connected to the IGBT driving module, and the state acquisition module supplies power to the IGBT driving module according to the driving power supply signal output by the control module.
According to some embodiments of the utility model, the vehicle control system further comprises: the first latch module is connected with the state acquisition module and the control module, and outputs a driving power supply signal currently output by the control module or a driving power supply signal output by the control module before according to a first clock signal output by the control module.
According to some embodiments of the utility model, the first latching module is a shift register.
According to some embodiments of the utility model, the control module comprises: a main processing unit for outputting a first PWM pulse signal; the co-processing unit is used for outputting a second PWM pulse signal; and the logic processing unit is connected with the main processing unit, the co-processing unit and the wave locking module, and performs logic operation on the first PWM pulse signal and the second PWM pulse signal to obtain and output the control PWM pulse signal.
According to some embodiments of the utility model, the control module comprises: a main processing unit for outputting a pre-PWM pulse signal; and the co-processing unit is connected with the main processing unit and the wave locking module and outputs the control PWM pulse signal according to the pre-PWM pulse signal.
According to some embodiments of the utility model, the vehicle control system further comprises: the second latch module is connected with the control module and outputs a power control signal currently output by the control module or a power control signal output by the control module before according to a second clock signal output by the control module; the whole vehicle power supply module is connected with the second latch module and outputs a whole vehicle power supply signal according to the power control signal output by the second latch module; and the power supply source and the whole vehicle power supply module receive the whole vehicle power supply signal.
According to some embodiments of the utility model, the vehicle control system further comprises: the contactor is connected with the whole vehicle power supply module, the whole vehicle power supply module outputs a contactor on-off signal according to the power supply control signal output by the second latch module, and the contactor is switched on and off according to the contactor on-off signal; and the high-voltage power supply is connected with the contactor.
According to some embodiments of the present invention, the entire vehicle power supply module includes: and the second latch module is integrated in the driving chip, and the driving chip is used for sending the power supply signal of the whole vehicle.
According to a second aspect embodiment of the utility model, a vehicle is provided, comprising the vehicle control system according to the first aspect embodiment of the utility model.
According to the vehicle of the embodiment of the second aspect of the utility model, by utilizing the vehicle control system of the embodiment of the first aspect of the utility model, the advantages of high safety, small size, low cost and the like are achieved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a connection diagram of a vehicle control system according to an embodiment of the utility model.
Fig. 2 is a schematic connection diagram of a control module, a wave locking module, a state acquisition module and an IGBT driving module of the vehicle control system according to the embodiment of the present invention.
Fig. 3 is a schematic connection diagram of a control module, a wave locking module, a state acquisition module and an IGBT driving module of a vehicle control system according to another embodiment of the present invention.
Fig. 4 is a schematic connection diagram of a control module, a first latch module and a status acquisition module of a vehicle control system according to an embodiment of the utility model.
Fig. 5 is a schematic connection diagram of a control module, a second latch module and a vehicle power supply module of the vehicle control system according to the embodiment of the utility model.
Reference numerals:
the system comprises a vehicle control system 1, a control module 100, a main processing unit 110, a co-processing unit 120, a logic processing unit 130, a state acquisition module 200, a wave locking module 300, an IGBT driving module 400, an IGBT module 500, a first latch module 600, a whole vehicle power supply module 700, a contactor 800, a high-voltage power supply 810 and a second latch module 900.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
In the description of the present invention, "a plurality" means two or more.
A vehicle control system 1 according to an embodiment of the utility model is described below with reference to the drawings.
As shown in fig. 1 to 5, the vehicle control system 1 includes a control module 100, a state acquisition module 200, a wave locking module 300, an IGBT driving module 400, and an IGBT module 500.
The control module 100 is configured to output a control PWM pulse signal, and the state acquisition module 200 is connected to the control module 100 and configured to acquire a state of the control module 100 and output an enable signal according to the state of the control module 100. The wave locking module 300 is connected to the control module 100 and the state acquisition module 200, the wave locking module 300 receives the control PWM pulse signal and the enable signal, and the wave locking module 300 outputs the control PWM pulse signal or the preset protection pulse signal according to the enable signal. The IGBT driving module 400 is connected to the wave locking module 300, and is configured to receive the control PWM pulse signal or the preset protection pulse signal output by the wave locking module 300, and the IGBT module 500 is connected to the IGBT driving module 400.
For example, information is exchanged between the state acquisition module 200 and the control module 100 through SPI communication, the state acquisition module 200 can receive signals that the control module 100 is in an abnormal state such as a dead halt, an overvoltage, an overcurrent, and the like, and the state acquisition module 200 outputs different enable signals according to whether the control module 100 is in a normal state or an abnormal state.
The vehicle control system 1 according to the embodiment of the present invention is configured to collect the state of the control module 100 and output the enable signal according to the state of the control module 100 by connecting the state collection module 200 with the control module 100. When the control module 100 is in a normal state, the signal output by the wave locking module 300 is the same as the control PWM pulse signal output by the control module 100, and at this time, the IGBT driving module 400 is equivalently controlled by the real-time control PWM pulse signal; when the control module 100 is in an abnormal state such as a crash, the wave-locking module 300 outputs a preset protection pulse signal, and at this time, the IGBT driving module 400 is controlled by the preset protection pulse signal, wherein the preset protection pulse signal may be a low-level flat wave, that is, the IGBT driving module 400 is turned off, so that the IGBT driving module 400 and the IGBT module 500 are prevented from being damaged, and the reliability and the safety of the circuit are both improved.
In addition, compared with the vehicle control system provided with the CPLD circuit in the related art, the vehicle control system 1 according to the embodiment of the present invention turns off the IGBT driving module 400 and the IGBT module 500 through the wave locking module 300, and has a smaller volume and a lower cost.
As such, the vehicle control system 1 according to the embodiment of the utility model has the advantages of high safety, small volume, low cost, and the like.
According to some embodiments of the present invention, as shown in fig. 1 and 4, the state acquisition module 200 is a low voltage power module and is connected to the IGBT driving module 400, and the state acquisition module 200 supplies power to the IGBT driving module 400 according to the driving power supply signal output by the control module 100. For example, the state acquisition module 200 may be provided with a power chip, and the power chip and the control module 100 communicate with each other through the SPI.
Like this, the state collection module 200 is integrated for IGBT drive module 400 power supply and for locking ripples module 300 messenger's two kinds of functions, and vehicle control system 1's integration degree is higher, is favorable to reducing vehicle control system 1's part quantity, reduces vehicle control system 1's occupation space, simplifies the connection step.
Further, the vehicle control system 1 further comprises a first latching module 600. The first latch module 600 is connected to the state acquisition module 200 and the control module 100, and the first latch module 600 outputs a driving power supply signal currently output by the control module 100 or a driving power supply signal previously output by the control module 100 according to a first clock signal output by the control module 100.
It should be noted that the state collection module 200 includes a low-voltage battery, which may be a storage battery, and since the storage battery is a constant-temperature power supply when the IGBT driving module 400 supplies power, the storage battery needs to have a controllable sleep wake-up function for reducing the energy consumption of the storage battery, that is, when the IGBT driving module 400 does not need to work, the storage battery can be controlled to enter a sleep mode to reduce the energy consumption of the storage battery, thereby preventing the storage battery from feeding. Moreover, the switching between the sleep state and the wake-up state of the storage battery is controlled by the control module 100 sending a driving power supply signal, but when the control module 100 is in an abnormal state such as a dead halt, the state of the driving power supply signal output by the control module 100 is uncertain, so that the storage battery is instantly output without current under the condition that the vehicle runs normally, the IGBT driving module 400 cannot work normally, the IGBT module 500 cannot be reliably turned off, and the vehicle is out of control or the vehicle controller is damaged.
By adding the first latch module 600 between the state acquisition module 200 and the control module 100, the driving power supply signal output by the control module 100 firstly enters the first latch module 600 and is latched in the first latch module 600, and the control module 100 can output a first clock signal to control the output signal of the first latch module 600. For example, when the control module 100 is in a normal state, the first clock signal controls the output signal of the first latch module 600 to be the same as the driving power supply signal currently output by the control module 100, that is, the operation of the low-voltage battery is controlled according to the real-time driving power supply signal output by the control module 100; when the control module 100 is in an abnormal state such as a dead halt, the first clock signal is an invalid signal, the output signal of the first latch module 600 is the same as the driving power supply signal output by the control module 100 at the last moment when the first clock signal is in the normal state, and until the control module 100 returns from the abnormal state to the normal state, the output signal of the first latch module 600 returns to be the same as the real-time driving power supply signal output by the control module 100 again.
Therefore, the current output by the state acquisition module 200 can be effectively prevented from fluctuating when the control module 100 is in abnormal states such as a dead halt, the abnormal power failure can be avoided, the IGBT module and the state acquisition module 200 can be reliably turned off by the vehicle controller, and the safety of the vehicle is improved.
Alternatively, the first latch module 600 is a shift register, for example, the first latch module 600 changes the output signal once upon receiving each valid first clock signal, and the first latch module 600 maintains the previous output signal upon receiving an invalid first clock signal. In this way, the function of the first latching module 600 is simply and stably implemented, which is advantageous for stable operation of the vehicle control system 1.
In some embodiments of the present invention, as shown in FIG. 2, control module 100 includes a main processing unit 110, a co-processing unit 120, and a logical processing unit 130.
The main processing unit 110 is configured to output a first PWM pulse signal, the co-processing unit 120 is configured to output a second PWM pulse signal, the logic processing unit 130 is connected to the main processing unit 110, the co-processing unit 120 and the wave locking module 300, and the logic processing unit 130 performs logic operation on the first PWM pulse signal and the second PWM pulse signal to obtain and output a control PWM pulse signal.
The co-processing unit 120 may be a Complex Programmable Logic Device (CPLD) and has the functions of collecting over-current and over-voltage signals, and the logic processing unit 130 may be an and gate, for example, the and gate performs a logical and operation on the first PWM pulse signal and the second PWM pulse signal to obtain a control PWM pulse signal, and outputs the control PWM pulse signal to the wave-locking module 300. Thus, the control module 100 is highly integrated and operates at a high speed.
In other embodiments of the present invention, as shown in FIG. 3, the control module 100 includes a main processing unit 110 and a co-processing unit 120. The main processing unit 110 is configured to output a pre-PWM pulse signal, the co-processing unit 120 is connected to the main processing unit 110 and the wave locking module 300, and the co-processing unit 120 outputs a control PWM pulse signal according to the pre-PWM pulse signal.
The co-processing unit 120 may be a Complex Programmable Logic Device (CPLD), and has the functions of collecting over-current and over-voltage signals, and the pre-PWM pulse signal performs a logic operation with the signal of the co-processing unit 120 in the co-processing unit 120 to obtain a control PWM pulse signal, and the co-processing unit 120 outputs the control PWM pulse signal to the wave-locking module 300. Thus, the integration of the control module 100 is higher.
According to some embodiments of the present invention, as shown in fig. 1 and 5, the vehicle control system 1 further includes a second latch module 900, a vehicle power supply module 700, and a power supply (not shown).
The second latch module 900 is connected to the control module 100, and the second latch module 900 outputs a power control signal currently output by the control module 100 or a power control signal previously output by the control module 100 according to a second clock signal output by the control module 100. The entire vehicle power supply module 700 is connected to the second latch module 900, and the entire vehicle power supply module 700 outputs an entire vehicle power supply signal according to the power control signal output by the second latch module 900. The power supply and vehicle power supply module 700 receives a vehicle power supply signal.
For example, the second latch module 900 may be a latch. Moreover, there are some critical systems on the vehicle, and the reliable safety of these critical systems directly affects the reliable safety of the whole vehicle, for example, a Battery Management System (BMS), BMS failure may cause management failure of the power battery of the vehicle, and further may damage the power battery, even the power battery may be subjected to fire and explosion due to overcharge and overdischarge. The entire vehicle power supply module 700 is used to control the battery that supplies power to the above-mentioned key systems.
By setting the second latch module 900, the second latch module 900 can latch the power control signal output by the control module 100, for example, when the control module 100 is in a normal state, the second clock signal is valid, the power control signal output by the control module 100 is sent to the second latch module 900, the output signal of the second latch module 900 is the same as the real-time power control signal, and the output signal of the second latch module 900 is sent to the vehicle power supply module 700, that is, the battery powered by the key system is controlled by the real-time power control signal; when the control module 100 is in an abnormal state such as a crash, the second clock signal is invalid, the output signal of the second latch module 900 is the same as the power control signal of the second clock signal at the last moment in the normal state, and the signal received by the entire vehicle power supply module 700 is the same as the power control signal of the second clock signal at the last moment in the normal state, that is, the working state of the battery powered by the key system is maintained at the state of the second clock signal at the last moment in the normal state, so that the instantaneous power failure of the battery powered by the key system can be avoided, the operation of the key system is more reliable, and the safety of the vehicle is high.
Further, the vehicle control system 1 further includes a contactor 800 and a high voltage power supply 810, the contactor 800 is connected to the entire vehicle power supply module 700, the entire vehicle power supply module 700 outputs an on-off signal of the contactor 800 according to the power control signal output by the second latch module 900, the contactor 800 is turned on or off according to the on-off signal of the contactor 800, and the high voltage power supply 810 is connected to the contactor 800.
Some contactors 800 in the vehicle are key contactors, for example, a whole vehicle owner positive main negative contactor used for controlling whether the high-voltage power supply 810 supplies power to a high-voltage system of the vehicle, and under the condition that the load of an electric control device of the vehicle is large, if the whole vehicle owner positive main negative contactor is suddenly turned off, a motor may rotate at a high speed to generate power to charge a capacitor in the electric control device, so that the voltage of a bus is continuously increased, and damage to components connected with the bus and explosion of the capacitor in the electric control device may be caused.
By arranging the second latch module 900, the second latch module 900 can latch the power control signal output by the control module 100, for example, when the control module 100 is in a normal state, the second clock signal is valid, the power control signal output by the control module 100 is sent to the second latch module 900, the output signal of the second latch module 900 is the same as the real-time power control signal, and the output signal of the second latch module 900 is sent to the entire vehicle power supply module 700, that is, the contactor 800 is controlled by the real-time power control signal at this time; when the control module 100 is in an abnormal state such as a crash, the second clock signal is invalid, the output signal of the second latch module 900 is the same as the power control signal of the second clock signal at the last moment in the normal state, and the working state of the contactor 800 is maintained at the last moment of the second clock signal in the normal state, so that the instantaneous disconnection of the contactor 800 can be avoided, the work of the contactor 800 is more reliable, and the safety of the vehicle is high.
Optionally, the entire car power supply module 700 includes a driving chip, the driving chip is configured to send an entire car power supply signal, and the second latch module 900 is integrated with the driving chip, that is, the driving chip is integrated with a latch function, a function of sending an entire car power supply signal, and a function of outputting an on-off signal of the contactor 800. In this way, the number of structures of the vehicle control system 1 is reduced, the arrangement of the vehicle control system 1 is facilitated, and the space occupied by the vehicle control system 1 is smaller.
A vehicle according to an embodiment of the utility model, which includes the vehicle control system 1 according to the above-described embodiment of the utility model, is described below with reference to the drawings.
According to the vehicle of the embodiment of the utility model, by utilizing the vehicle control system 1, the advantages of high safety, small size, low cost and the like are achieved.
Other configurations and operations of the vehicle control system 1 and the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A vehicle control system, characterized by comprising:
the control module is used for outputting a control PWM pulse signal;
the state acquisition module is connected with the control module and used for acquiring the state of the control module and outputting an enabling signal according to the state of the control module;
the wave locking module is connected with the control module and the state acquisition module, receives the control PWM pulse signal and the enabling signal, and outputs the control PWM pulse signal or a preset protection pulse signal according to the enabling signal;
the IGBT driving module is connected with the wave locking module and used for receiving the control PWM pulse signal or the preset protection pulse signal output by the wave locking module;
and the IGBT module is connected to the IGBT driving module.
2. The vehicle control system according to claim 1, wherein the state acquisition module is a low-voltage power supply module and is connected with the IGBT driving module, and the state acquisition module supplies power to the IGBT driving module according to a driving power supply signal output by the control module.
3. The vehicle control system according to claim 2, characterized by further comprising:
the first latch module is connected with the state acquisition module and the control module, and outputs a driving power supply signal currently output by the control module or a driving power supply signal output by the control module before according to a first clock signal output by the control module.
4. The vehicle control system of claim 3, wherein the first latching module is a shift register.
5. The vehicle control system of claim 1, wherein the control module comprises:
a main processing unit for outputting a first PWM pulse signal;
the co-processing unit is used for outputting a second PWM pulse signal;
and the logic processing unit is connected with the main processing unit, the co-processing unit and the wave locking module, and performs logic operation on the first PWM pulse signal and the second PWM pulse signal to obtain and output the control PWM pulse signal.
6. The vehicle control system of claim 1, wherein the control module comprises:
a main processing unit for outputting a pre-PWM pulse signal;
and the co-processing unit is connected with the main processing unit and the wave locking module and outputs the control PWM pulse signal according to the pre-PWM pulse signal.
7. The vehicle control system according to claim 1, characterized by further comprising:
the second latch module is connected with the control module and outputs a power control signal currently output by the control module or a power control signal output by the control module before according to a second clock signal output by the control module;
the whole vehicle power supply module is connected with the second latch module and outputs a whole vehicle power supply signal according to the power control signal output by the second latch module;
and the power supply source and the whole vehicle power supply module receive the whole vehicle power supply signal.
8. The vehicle control system according to claim 7, characterized by further comprising:
the contactor is connected with the whole vehicle power supply module and the power supply, the whole vehicle power supply module outputs a contactor on-off signal according to the power supply control signal output by the second latch module, and the contactor is switched on and off according to the contactor on-off signal;
and the high-voltage power supply is connected with the contactor.
9. The vehicle control system of claim 7, wherein the full vehicle power module comprises:
and the second latch module is integrated in the driving chip, and the driving chip is used for sending the power supply signal of the whole vehicle.
10. A vehicle characterized by comprising the vehicle control system of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121753561.0U CN215436303U (en) | 2021-07-29 | 2021-07-29 | Vehicle control system and vehicle with same |
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| CN202121753561.0U CN215436303U (en) | 2021-07-29 | 2021-07-29 | Vehicle control system and vehicle with same |
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