CN215944490U - Low-voltage power supply unit insufficient voltage charging circuit, driving system and electric automobile - Google Patents
Low-voltage power supply unit insufficient voltage charging circuit, driving system and electric automobile Download PDFInfo
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- CN215944490U CN215944490U CN202121878863.0U CN202121878863U CN215944490U CN 215944490 U CN215944490 U CN 215944490U CN 202121878863 U CN202121878863 U CN 202121878863U CN 215944490 U CN215944490 U CN 215944490U
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Abstract
The present disclosure relates to a low voltage power supply unit insufficient voltage charging circuit, actuating system and electric automobile, this electric automobile can be unmanned car (or be called autonomous vehicle or unmanned vehicle), and this low voltage power supply unit insufficient voltage charging circuit includes: the system comprises a high-voltage power supply unit, a high-voltage controller, a low-voltage power supply unit, a direct-current power supply conversion unit and a bypass control unit; the low-voltage power supply unit is connected with the high-voltage controller and used for supplying power to the high-voltage controller; when the power supply of the high-voltage controller is insufficient, the bypass control unit responds to the operation of a user, so that the high-voltage power supply unit skips over the high-voltage controller, and is connected with the direct-current power supply conversion unit through the bypass control unit to charge the low-voltage power supply unit. Therefore, when the low-voltage power supply unit is insufficient in power, namely the low-voltage power supply unit cannot supply power to the high-voltage controller, the high-voltage power supply unit can charge the low-voltage power supply unit through the bypass control unit, so that normal starting of a vehicle is ensured, and the operation is simple.
Description
Technical Field
The utility model relates to an electric automobile technical field especially relates to a low pressure power supply unit insufficient voltage charging circuit, actuating system and electric automobile.
Background
A Battery Electric Vehicle (BEV) refers to a Vehicle that uses a Vehicle-mounted power supply as power and uses a motor to drive wheels to run, and meets various requirements of road traffic and safety regulations. Because the influence of the electric automobile on the environment is smaller than that of the traditional automobile, the prospect of the electric automobile is widely seen.
Generally, an electric vehicle includes a high-voltage power system and a low-voltage component system, the high-voltage power system converts a high voltage into a low voltage through a dc power conversion unit, such as DCDC, and supplements the low-voltage power supply unit with power, and the low-voltage power supply unit can drive a low-voltage control system of the entire vehicle, such as supplying power to a high-voltage controller, and activate a power-on process. The low-voltage power supply unit is used as a power supply of a vehicle electronic system and is related to the normal operation of all the electronic systems. When the vehicle is parked for too long time, subsystems such as an Electronic Control Unit (ECU), an antitheft Unit, a remote wakeup Unit and the like of the vehicle still work normally during parking, and the electric quantity of the low-voltage power supply Unit is consumed, so that when the vehicle needs to be restarted, the situation that the vehicle cannot be started due to the fact that the low-voltage power supply Unit is insufficient can occur. To this condition, it is usually necessary to take the power up to tear the car open to for low pressure power supply unit supplements the electric quantity, and is sufficient at low pressure power supply unit's electric quantity, and after it can make the vehicle normally start again promptly, reorganization dismantled part, its complex operation, user's user experience is relatively poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a low-voltage power supply unit insufficient-voltage charging circuit, a driving system and an electric vehicle.
The utility model provides a low voltage power supply unit insufficient voltage charging circuit includes: the system comprises a high-voltage power supply unit, a high-voltage controller, a low-voltage power supply unit, a direct-current power supply conversion unit and a bypass control unit;
the low-voltage power supply unit is connected with the high-voltage controller and used for supplying power to the high-voltage controller;
when the power supply of the high-voltage controller is insufficient, the bypass control unit responds to the operation of a user, the high-voltage power supply unit skips the high-voltage controller, and the bypass control unit is connected with the direct-current power supply conversion unit to charge the low-voltage power supply unit.
In some embodiments, the dc power conversion unit is connected to the high voltage controller and the low voltage power supply unit, and the dc power conversion unit is configured to convert a high voltage dc power provided by the high voltage power supply unit into a low voltage dc power suitable for charging the low voltage power supply unit.
In some embodiments, the low-voltage power supply unit insufficient-voltage charging circuit further includes a pre-charging circuit, the pre-charging circuit is disposed in the dc power conversion unit, and the pre-charging circuit is configured to buffer a high-voltage impact of the high-voltage power supply unit.
In some embodiments, the low-voltage power supply unit insufficient-voltage charging circuit further includes a pre-charging circuit, the pre-charging circuit is connected with the bypass control unit and the dc power conversion unit, and the pre-charging circuit is configured to buffer a high-voltage impact of the high-voltage power supply unit.
In some embodiments, the bypass control unit includes a means having a reset function for turning on the electrical connection of the high-voltage power supply unit and the dc power supply conversion unit based on an operation by a user, and for turning off the electrical connection of the high-voltage power supply unit and the dc power supply conversion unit in the case where the operation is cancelled by the user.
The present disclosure also provides a driving system, which includes any one of the above low-voltage power supply units; further comprising:
the high-voltage power system is connected with the high-voltage controller, and the high-voltage controller is used for opening a passage between the high-voltage power supply unit and the high-voltage power system under the condition of electrification.
In some embodiments, the high pressure power system comprises:
a motor controller and a motor;
the motor controller is connected with the high-voltage controller and the motor;
the motor controller is used for driving the motor under the condition that the high-voltage power supply unit supplies power.
The present disclosure also provides an electric vehicle, which includes any one of the above low-voltage power supply unit insufficient-voltage charging circuits.
The present disclosure also provides an electric vehicle including any one of the above drive systems.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
in the insufficient voltage charging circuit of low pressure power supply unit, actuating system and electric automobile that this disclosed embodiment provided, the insufficient voltage charging circuit of low pressure power supply unit includes: the system comprises a high-voltage power supply unit, a high-voltage controller, a low-voltage power supply unit, a direct-current power supply conversion unit and a bypass control unit; the low-voltage power supply unit is connected with the high-voltage controller and used for supplying power to the high-voltage controller; when the power supply of the high-voltage controller is insufficient, the bypass control unit responds to the operation of a user, so that the high-voltage power supply unit skips over the high-voltage controller, and is connected with the direct-current power supply conversion unit through the bypass control unit to charge the low-voltage power supply unit. Therefore, by arranging the bypass control unit, when the low-voltage power supply unit (such as a storage battery) is in power shortage, namely the low-voltage power supply unit cannot supply power to the high-voltage controller or the power supply is insufficient, the high-voltage power supply unit and the direct-current power supply conversion unit can be switched on through the bypass control unit based on the operation of a user, namely the high-voltage controller is skipped over, the low-voltage power supply unit is charged, the low-voltage power supply unit can supply a power-on signal to the high-voltage controller, the high-voltage controller executes a high-voltage power-on process after receiving the power-on signal, and the vehicle can be started normally; simultaneously, only need user operation bypass control unit, and need not a series of loaded down with trivial details operations such as the power take-up of tearing open the car, when low voltage power supply unit insufficient voltage promptly, need not the power take-up and can realize mending the electricity to low voltage power supply unit, easy operation to be favorable to promoting user's with the car experience.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a power-shortage charging circuit of a low-voltage power supply unit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a power-shortage charging circuit of another low-voltage power supply unit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a power-shortage charging circuit of another low-voltage power supply unit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a driving system according to an embodiment of the present disclosure.
10, a low-voltage power supply unit power-lack charging circuit; 20. a drive system; 21. a high pressure power system; 212. a motor controller 214, a motor; 110. the high-voltage power supply unit 120, the high-voltage controller 130, the direct-current power supply conversion unit 140, the low-voltage power supply unit 150, the bypass control unit 160 and the pre-charging circuit.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
In the power-lack charging circuit of the low-voltage power supply unit provided by the embodiment of the disclosure, by arranging the bypass control unit, when the low-voltage power supply unit (for example, a storage battery) is in power-lack state, that is, when the low-voltage power supply unit cannot supply power to the high-voltage controller or supplies power insufficiently, the high-voltage power supply unit can be connected with the direct-current power supply conversion unit through the bypass control unit based on the operation of a user, so that the high-voltage controller is skipped over to charge the low-voltage power supply unit, and then the low-voltage power supply unit can supply a power-on signal to the high-voltage controller, and the high-voltage controller executes a high-voltage power-on process after receiving the power-on signal, thereby ensuring that a vehicle can be normally started; simultaneously, only need user operation bypass control unit, and need not a series of loaded down with trivial details operations such as the power take-up of tearing open the car, when low voltage power supply unit insufficient voltage promptly, need not the power take-up and can realize mending the electricity to low voltage power supply unit, easy operation to be favorable to promoting user's with the car experience.
The low-voltage power supply unit power-shortage charging circuit, the driving system and the electric vehicle provided by the embodiment of the disclosure are exemplarily described below with reference to fig. 1 to 4.
In some embodiments, fig. 1 is a schematic structural diagram of a power-shortage charging circuit of a low-voltage power supply unit according to an embodiment of the present disclosure. Referring to fig. 1, the low voltage power supply unit brown-out charging circuit 10 may include: a high voltage power supply unit 110, a high voltage controller 120, a dc power conversion unit 130, a low voltage power supply unit 140, and a bypass control unit 150; the low voltage power supply unit 140 is connected to the high voltage controller 120 and is configured to supply power to the high voltage controller 120; when the power supply of the high voltage controller 120 is insufficient, the bypass control unit 150 causes the high voltage power supply unit 110 to skip the high voltage controller 120 in response to a user's operation, and connects the dc power conversion unit 130 through the bypass control unit 150 to charge the low voltage power supply unit 140.
In the embodiment of the present disclosure, when the electric quantity of the low voltage power supply unit 110 is sufficient, the low voltage power supply unit 140 supplies power to the high voltage controller 120, and the high voltage controller 120 executes a high voltage power-on process after receiving the power-on signal; after the high voltage controller 120 is powered on, it can start to charge the low voltage power supply unit 140 and supply power to other high voltage systems or low voltage systems in the vehicle, so as to ensure that both the high voltage loop (such as the loop including the high voltage power system in the following) and the low voltage loop (such as the loop including the on-board computer, the anti-theft subsystem and the remote wake-up subsystem) in the vehicle have power, thereby ensuring that the vehicle is normally started and can be normally used.
It can be appreciated that the vehicle start-up procedure described above presupposes that the low voltage power supply unit 140 is powered so that it can activate the power-up procedure. Therefore, when the low voltage power supply unit 140 is in a power-down state, the high voltage controller 120 cannot be started without the operation of the bypass control unit 150, the low voltage power supply unit 140 and the high voltage power supply unit 110 cannot be turned on, and the low voltage power supply unit 140 cannot be charged, and at this time, the vehicle cannot be started even if the high voltage power supply unit 110 is in a power-on state. Alternatively, when the high-voltage power supply unit 110 in the vehicle is already dead, the above-described starting procedure cannot be performed, and the vehicle cannot be started.
In view of this, in the low-voltage power supply unit power-lack charging circuit 10 provided in the embodiment of the present disclosure, the bypass control unit 150 is added, and the bypass control unit 150 is capable of, based on the operation of the user, enabling the high-voltage power supply unit 110 to skip the high-voltage controller 120 and connect the dc power supply conversion unit 130 to charge the low-voltage power supply unit 140 when the low-voltage power supply unit 140 is in power-lack state, that is, when the high-voltage controller 120 is in power-lack state. Therefore, by arranging the bypass control unit 150, when the low-voltage power supply unit 140 is in power shortage, a user is allowed to operate, the bypass control unit 150 is connected with the high-voltage power supply unit 110 and the direct-current power supply conversion unit 130 to charge the low-voltage power supply unit 140, the low-voltage power supply unit 140 can send a power-on signal to the high-voltage controller 120, the high-voltage controller 120 executes a high-voltage power-on process after receiving the power-on signal, the direct-current power supply conversion unit 130 is started after power-on, the high-voltage power supply unit 110 is continuously used for charging the low-voltage power supply unit 140, and the vehicle can be started normally; meanwhile, only the user needs to operate the bypass control unit 150, a series of complex operations such as vehicle dismounting and power charging are not needed, namely when the low-voltage power supply unit 140 is short of power, power supplement to the low-voltage power supply unit 140 can be achieved without power charging, and the operation is simple, so that the vehicle using experience of the user is promoted.
In addition, in case that the high voltage power supply unit 110 in the vehicle is already out of power, the high voltage power supply unit 110 may be autonomously replaced by a user, and thereafter, the operation is performed through the bypass control unit 150; correspondingly, the bypass control unit 150 enables the high voltage power supply unit 110 to skip the high voltage controller 120 in response to the user's operation, and connects the dc power conversion unit 130 through the bypass control unit 150 to charge the low voltage power supply unit 140, so that the normal start of the vehicle can be ensured, and the operation is simple.
In some embodiments, with continued reference to fig. 1, in the low-voltage power supply unit power-lack charging circuit 10, the dc power conversion unit 130 is connected to the high-voltage controller 120 and the low-voltage power supply unit 140, and the dc power conversion unit 130 is configured to convert the high-voltage dc power provided by the high-voltage power supply unit 110 into a low-voltage dc power suitable for charging the low-voltage power supply unit 140.
In the embodiment of the present disclosure, when the low-voltage power supply unit 140 is in power shortage, a user is allowed to operate, the bypass control unit 150 enables the high-voltage power supply unit 110 to skip the high-voltage controller 120, and the bypass control unit 150 is connected to the dc power conversion unit 130 to charge the low-voltage power supply unit 140, the high-voltage controller 120 executes a high-voltage power-on process after receiving a power-on signal, starts the dc power conversion unit 130 after power-on, and continues to charge the low-voltage power supply unit 140, thereby ensuring that the vehicle can be started normally; meanwhile, only the user needs to operate the bypass control unit 150, a series of complex operations such as vehicle dismounting and power charging are not needed, namely when the low-voltage power supply unit 140 is short of power, power supplement to the low-voltage power supply unit 140 can be achieved without power charging, and the operation is simple, so that the vehicle using experience of the user is promoted.
In some embodiments, the high voltage power supply unit 110 includes a power battery or a power battery pack, or other structural components capable of providing a higher supply voltage.
In some embodiments, the low voltage power supply unit 140 includes a low voltage battery, or other structural components that can be charged and discharged and provide a lower supply voltage.
In some embodiments, the low voltage battery is a 12V battery.
In the embodiment of the disclosure, when the electric automobile is in the 12V storage battery insufficient voltage, the bypass control unit 150 can be utilized, the high-voltage power supply unit 110 and the direct-current power supply conversion unit 130 are switched on based on the operation of the user, so that the electric quantity can be supplemented for the 12V storage battery conveniently, namely, the self electricity supplement can be realized without the operations such as vehicle dismantling and electricity taking, and a series of complex operations such as vehicle dismantling and electricity taking are avoided.
In other embodiments, the power supply voltage of the low-voltage battery may be set to other voltage values, which may be set based on requirements of the low-voltage power supply unit power-lack charging circuit, the driving system including the low-voltage power supply unit power-lack charging circuit, and the electric vehicle including the low-voltage power supply unit power-lack charging circuit or the driving system, which are not limited herein.
In some embodiments, with continued reference to fig. 1, bypass control unit 150 includes a component having a reset function; the means having a reset function is used for turning on the electrical connection of the high-voltage power supply unit 110 and the dc power conversion unit 130 based on an operation by a user, and for turning off the electrical connection of the high-voltage power supply unit 110 and the dc power conversion unit 130 in the case where the operation is cancelled by the user.
In the embodiment of the present disclosure, the component having the reset function can switch on the electrical connection between the high voltage power supply unit 110 and the dc power conversion unit 130 when the user operates the bypass control unit 150, and at this time, the high voltage power supply unit 110 skips the high voltage controller 120 and directly connects the dc power conversion unit 130 through the bypass control unit 150, so as to start the dc power conversion unit 130 to charge the low voltage power supply unit 140. And, the component with the reset function can also disconnect the electrical connection between the high voltage power supply unit 110 and the dc power conversion unit 130 when the user cancels the operation of the bypass control unit 150, so as to connect the high voltage power supply unit 110 and the dc power conversion unit 130 through the high voltage controller 120 after the high voltage controller 120 is powered on, thereby realizing the charging of the low voltage power supply unit 140.
Illustratively, the situation where the user cancels the operation includes the situation where after the electrical connection of the high-voltage power supply unit 110 and the dc power conversion unit 130 is communicated across the high-voltage controller 120, the dc power conversion unit 130 is activated and the power of the low-voltage power supply unit 140 is continuously increased until the power thereof satisfies the condition that the vehicle keeps normally started without continuing the electrical connection of the high-voltage power supply unit 110 and the dc power conversion unit 130 communicated across the high-voltage controller 120. The case where the user does not operate includes a case where the amount of power of the low-voltage power supply unit 140 is sufficient from the beginning without the need for electrical connection that connects the high-voltage power supply unit 110 and the dc power conversion unit 130 across the high-voltage controller 120.
In the embodiment of the present disclosure, by providing that the bypass control unit 150 includes a component having a reset function, the bypass control unit 150 may be operated when an electrical connection for connecting the high-voltage power supply unit 110 and the dc power conversion unit 130 across the high-voltage controller 120 is required; when the high-voltage controller 120 is not needed to be crossed to connect the high-voltage power supply unit 110 and the direct-current power conversion unit 130, the bypass control unit is not operated or cancelled, so that the operation mode is simple and convenient.
In some embodiments, bypass control unit 150 includes a knob or button having a reset function.
In the embodiment of the present disclosure, the bypass control unit 150 is implemented by using a knob or a key. In combination with the above, the high voltage power supply unit 110 bypasses the high voltage controller 120 and bypasses the direct current power supply conversion unit 130, and specifically, the high voltage power supply unit 110 is controlled by a knob or a key with a reset function, such as a resilient button or a button, when the key is pressed or rotated, the low voltage power supply unit 140 is forced to be switched on to charge the low voltage power supply unit 140, at this time, a normal power-on process of the vehicle can be performed, when the power-on is successful after the actuation of the main relay in the high voltage controller 120, the key or the button can be released, and at this time, the vehicle can be kept in a normal starting state.
Therefore, in the embodiment of the present disclosure, a resilient button or knob dedicated to the low voltage power supply unit 140 may be led out from the high voltage power line connected to the high voltage power supply unit 110, and it is ensured that the forced power-on circuit can only be temporarily connected when the user operates the forced power-on circuit, and when the user operation disappears, the forced power-on circuit is disconnected accordingly.
In some embodiments, fig. 2 is a schematic structural diagram of another low-voltage power supply unit power-lack charging circuit provided in the embodiment of the present disclosure, and fig. 3 is a schematic structural diagram of another low-voltage power supply unit power-lack charging circuit provided in the embodiment of the present disclosure. On the basis of fig. 1, referring to fig. 2 or fig. 3, the low-voltage power supply unit insufficient voltage charging circuit 10 further includes a pre-charging circuit 160; the pre-charging circuit 160 is used for buffering the high voltage impact of the high voltage power supply unit 110; the pre-charge circuit 160 is connected between the dc power conversion unit 130 and the bypass control unit 150 (see fig. 3); alternatively, the precharge circuit 160 is disposed in the dc power conversion unit 130 (see fig. 2).
In the embodiment of the present disclosure, in order to ensure the safety of charging and discharging of the forced power-up circuit when the high-voltage power supply unit 110 and the dc power conversion unit 130 are switched on across the high-voltage controller 120, a pre-charge circuit 160 may be disposed in the dc power conversion unit 130 or in front of the dc power conversion unit 130 (according to the current flow direction), and the pre-charge circuit 160 may buffer the high-voltage impact of the high-voltage power supply unit 110 on the dc power conversion unit 130, thereby ensuring the safety of the circuit.
It is understood that the pre-charge circuit 160 can be implemented by any circuit structure known to those skilled in the art that can buffer high voltage impact, and is not described or limited herein.
In some embodiments, with continued reference to any of fig. 1-3, the high voltage controller 120 is connected to the high voltage power supply unit 110; the high voltage controller 120 is configured to power up the low voltage power supply unit 140 to start the dc power conversion unit 130; the dc power conversion unit 130 is also used to open a path between the high voltage power supply unit 110 and the low voltage power supply unit 140 if activated.
In the embodiment of the present disclosure, in the case that the low voltage power supply unit 140 can supply power to the high voltage controller 120, or the low voltage power supply unit 140 continues to charge until it can supply power to the high voltage controller 120, a power-on signal is given to the high voltage controller 120; correspondingly, after receiving the power-on signal, the high-voltage controller 120 executes a high-voltage power-on procedure to start (i.e., activate) the dc power conversion unit 130; the high-voltage power supply unit 110 is used for charging the low-voltage power supply unit 140 continuously through the high-voltage controller 120 and the direct-current power supply conversion unit 130, so that the normal starting of the vehicle is ensured; meanwhile, only the user needs to operate the bypass control unit 150, a series of complex operations such as vehicle dismounting and power charging are not needed, namely when the low-voltage power supply unit 140 is short of power, power supplement to the low-voltage power supply unit 140 can be achieved without power charging, and the operation is simple, so that the vehicle using experience of the user is promoted.
On the basis of the above embodiment, the embodiment of the present disclosure further provides a driving system, which includes any one of the above low-voltage power supply unit insufficient-voltage charging circuits, and has a corresponding technical effect. The same points can be understood by referring to the above explanation of the low-voltage power supply unit power-lack charging circuit, which is not described herein.
Exemplarily, fig. 4 is a schematic structural diagram of a driving system provided in an embodiment of the present disclosure. Referring to fig. 4, the driving system 20 includes a low-voltage power supply unit brown-out charging circuit 10; further comprising: a high pressure power system 21; the high-pressure power system 21 is connected with the high-pressure controller 120; the high voltage controller 120 is configured to open a path between the high voltage power supply unit 110 and the high voltage power system 21 when the power supply is powered on, so as to supply power to the high voltage power system 21 by using the high voltage power supply unit 110.
In the embodiment of the present disclosure, the low-voltage power supply unit power-lack charging circuit 10 may be any one of the low-voltage power supply unit power-lack charging circuits in the above embodiments. The high voltage power system 21 is used to form a high voltage loop together with the high voltage power supply unit 110 and the high voltage controller 120.
In combination with the above, when the low-voltage power supply unit 140 is in power shortage, the bypass control unit 150 can be operated by a user, the high-voltage power supply unit 110 and the dc power supply conversion unit 130 are switched on, so as to charge the low-voltage power supply unit 140, the high-voltage controller 120 executes a high-voltage power-on process after receiving a power-on signal, starts the dc power supply conversion unit 130 after power-on, and continues to charge the low-voltage power supply unit 140; meanwhile, after the high-voltage controller 120 is powered on, the high-voltage power supply unit 110 can be used for supplying power to the high-voltage power system 21, so that a high-voltage loop is ensured to have a power supply, and the vehicle can be ensured to be started normally; simultaneously, in this actuating system, when low voltage power supply unit 140 is insufficient voltage, only need user operation bypass control unit 150, and need not a series of loaded down with trivial details operations such as the power of taking a car of tearing open, promptly when low voltage power supply unit 140 is insufficient voltage, need not the power of taking a car and can realize mending power, easy operation to low voltage power supply unit 140 to be favorable to promoting user's experience with the car.
In some embodiments, with continued reference to fig. 4, the high-pressure power system 21 includes a motor controller 212 and a motor 214; the input end of the motor controller 212 is connected with the output end of the high-voltage controller 120, and the output end of the motor controller 212 is connected with the motor 214; that is, the motor controller 212 is connected to the high voltage controller 120 and the motor 214, and the motor controller 212 is used for driving the motor 214, for example, rotating the motor 214, in the case that the high voltage power supply unit 110 supplies power.
In the embodiment of the present disclosure, the output terminal of the motor controller 212 may include 4, three of which respectively output the voltages of the U-phase, the V-phase and the W-phase, and the remaining other one of which may be used to feed back the monitoring signal of the motor operating state, so as to realize the controllable driving of the motor 214.
The present disclosure also provides an electric vehicle, which includes any one of the above low-voltage power supply unit insufficient-voltage charging circuits, or includes any one of the above driving systems.
Illustratively, in combination with the above, the electric vehicle may include a power battery powered high voltage power system and a 12V battery powered low voltage component system; the power battery is communicated with a direct current power supply conversion unit, such as DCDC (direct current) through a high-voltage controller or a bypass controller, high voltage is converted into low voltage so as to supplement electricity for the 12V storage battery, and the 12V storage battery drives a low-voltage component system in the whole vehicle.
In the electric automobile that this disclosed embodiment provided, walk around high-pressure controller bypass with power battery high-pressure side and directly link DCDC, communicate with knob or key control circuit that can kick-back, when pressing the case or rotating the knob promptly, DCDC forces the switch-on power battery to charge for 12V battery, can execute the normal power-on procedure of vehicle this moment, power-on is successful after the main relay actuation in high-pressure controller, can loosen button or knob, easy operation so, user's experience with the car can be promoted.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A kind of undervoltage power supply unit insufficient voltage charging circuit, characterized by that, comprising:
the system comprises a high-voltage power supply unit, a high-voltage controller, a low-voltage power supply unit, a direct-current power supply conversion unit and a bypass control unit;
the low-voltage power supply unit is connected with the high-voltage controller and used for supplying power to the high-voltage controller;
when the power supply of the high-voltage controller is insufficient, the bypass control unit responds to the operation of a user, the high-voltage power supply unit skips the high-voltage controller, and the bypass control unit is connected with the direct-current power supply conversion unit to charge the low-voltage power supply unit.
2. The insufficient voltage charging circuit of low voltage power supply unit according to claim 1, wherein said dc power conversion unit is connected to said high voltage controller and said low voltage power supply unit, and is configured to convert a high voltage dc power provided by said high voltage power supply unit into a low voltage dc power suitable for charging said low voltage power supply unit.
3. The low-voltage power supply unit insufficient voltage charging circuit according to claim 2, further comprising a pre-charging circuit, wherein the pre-charging circuit is disposed in the dc power conversion unit, and the pre-charging circuit is configured to buffer a high voltage surge of the high-voltage power supply unit.
4. The low-voltage power supply unit insufficient voltage charging circuit according to claim 2, further comprising a pre-charging circuit, wherein the pre-charging circuit is connected with the bypass control unit and the dc power conversion unit, and the pre-charging circuit is configured to buffer a high voltage surge of the high-voltage power supply unit.
5. The low voltage power supply unit power shortage charging circuit according to claim 1, wherein the bypass control unit comprises a means having a reset function for turning on the electrical connection of the high voltage power supply unit and the dc power supply conversion unit based on an operation by a user and for turning off the electrical connection of the high voltage power supply unit and the dc power supply conversion unit in the case where the operation is cancelled by the user.
6. A drive system comprising the low-voltage power supply unit power-shortage charging circuit of any one of claims 1 to 5, further comprising:
the high-voltage power system is connected with the high-voltage controller, and the high-voltage controller is used for opening a passage between the high-voltage power supply unit and the high-voltage power system under the condition of electrification.
7. The drive system of claim 6, wherein the high pressure power system comprises:
a motor controller and a motor;
the motor controller is connected with the high-voltage controller and the motor;
the motor controller is used for driving the motor under the condition that the high-voltage power supply unit supplies power.
8. An electric vehicle comprising a low-voltage power supply unit brown-out charging circuit according to any one of claims 1 to 5.
9. An electric vehicle comprising a drive system according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121878863.0U CN215944490U (en) | 2021-08-11 | 2021-08-11 | Low-voltage power supply unit insufficient voltage charging circuit, driving system and electric automobile |
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