CN114132182A

CN114132182A - Circuit, method and device for recovering braking energy

Info

Publication number: CN114132182A
Application number: CN202111350751.2A
Authority: CN
Inventors: 市川耕司
Original assignee: Iat Co ltd
Current assignee: Iat Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-03-04

Abstract

The invention provides a circuit, a method and a device for recovering brake energy, wherein the circuit comprises: the system comprises a battery, a load relay, a load, a motor and a single-pole double-throw switch; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the fixed end of the single-pole double-throw switch is connected with the first end of the motor, and under the condition that the vehicle meets a first condition, the movable end of the single-pole double-throw switch is connected with the first end of the load, and the load relay is disconnected; and under the condition that the vehicle does not meet a first condition, connecting the movable end of the single-pole double-throw switch with the first end of the battery, wherein the first condition is that the vehicle is in a braking energy recovery state and the electric quantity state of the vehicle is in a preset state. The technical problem that in the prior art, the electric energy of the vehicle battery is unnecessarily consumed due to the fact that braking energy is recovered under the condition that the vehicle battery is in a full-power state is solved.

Description

Circuit, method and device for recovering braking energy

Technical Field

The invention relates to the technical field of automobiles, in particular to a circuit, a method and a device for recovering braking energy.

Background

The vehicle brake is an operation of applying a certain force to some parts (mainly wheels) of a vehicle to perform a certain degree of forced braking, in which a conventional gasoline vehicle performs braking by pressing a brake pedal of the vehicle, while a brake pad sandwiches a brake disc or presses a brake shoe against a brake drum, and rotation of a tire is suppressed by friction to decelerate, but a large amount of heat energy is generated when the brake of the vehicle is operated, and particularly, when the vehicle is going downhill for a long time, the heat generated by braking may generate a phenomenon in which an oil path of the vehicle is air-blocked and engine braking is degraded.

Accordingly, engine braking is performed, and in a manual transmission vehicle, strong engine braking is generated as long as downshifting (selecting a gear ratio lower by one, for example, from 5 to 4) is performed, and in an automatic transmission vehicle, strong engine braking is generated as long as the gear is switched from D to 3, 2, or L, or overdrive is turned off, and by engine braking, it is avoided that the vehicle brake generates a large amount of heat due to deceleration caused by friction suppressing the rotation of the tire.

When the engine is braked, energy is generated, and in order to realize effective utilization of the energy, braking energy recovery is required, wherein the braking energy recovery is to convert a part of mechanical energy generated when the vehicle is braked or decelerated into other forms of energy, such as electric energy, through a regeneration system. In the prior art, a load is often arranged in a vehicle to consume electric energy generated by recovering the braking energy, and when the vehicle is in a full-power state, the battery still supplies power to the load while the electric energy generated by recovering the braking energy is consumed by the load, so that unnecessary electric energy consumption is caused.

In the related art, the recovery of braking energy is performed when the vehicle battery is in a fully charged state, resulting in unnecessary consumption of electric energy from the vehicle battery.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention provides a circuit, a method and a device for recovering braking energy, which aim to solve the technical problem that in the prior art, the electric energy of a vehicle battery is unnecessarily consumed because the braking energy is recovered under the condition that the vehicle battery is in a full-power state.

According to a first aspect of the present invention, there is provided a braking energy recovery circuit for use in a vehicle, wherein the circuit comprises: the system comprises a battery, a load relay, a load, a motor and a single-pole double-throw switch; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, and the fixed end of the single-pole double-throw switch is connected with the first end of the motor.

Further, the load is an electric heater arranged on the vehicle; the load relay is a thermal relay connected with the electric heater.

According to a second aspect of the present invention, there is provided a method of braking energy recovery, the method comprising: detecting the electric quantity state of the vehicle under the condition that the braking energy of the vehicle is recovered; and under the condition that the electric quantity state of the vehicle is in a preset state, controlling the electric energy generated by recovering the braking energy of the vehicle to be used for supplying power to the load of the vehicle.

Further, the vehicle further includes: the device comprises a battery, a switching circuit, a load relay and a motor; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the first end of the switching circuit is respectively connected with the first end of the load and the first end of the battery, and the second end of the switching circuit is connected with the first end of the motor; the motor generates electric energy through braking energy recovery, wherein the control of the electric energy generated by the vehicle for supplying power to a load of the vehicle comprises the following steps: the switching circuit of the vehicle is controlled to switch so that the load and the motor form a loop in which the motor supplies power to the load.

Further, the method further comprises: detecting whether the running state of the vehicle is braking or freewheeling; and controlling the vehicle to recover braking energy.

Further, after controlling the electric energy generated by recovering the vehicle braking energy to be used for supplying power to the load of the vehicle, the method further comprises the following steps: judging whether a battery of the vehicle meets a preset state or not;

and under the condition that the battery does not accord with the preset state, the switching circuit is controlled to switch, so that the battery and the motor form a loop, and the motor supplies power to the battery in the loop.

Further, the load is an electric heater provided to the vehicle.

According to a third aspect of the present invention, there is provided an apparatus for brake energy recovery, the apparatus comprising: the detection unit is used for detecting the electric quantity state of the vehicle under the condition that the vehicle carries out braking energy recovery; the first control unit is used for controlling the electric energy generated by recovering the vehicle braking energy to supply power to the load of the vehicle under the condition that the electric quantity state of the vehicle is full.

Further, the vehicle further includes: the device comprises a battery, a switching circuit, a load relay and a motor; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the first end of the switching circuit is respectively connected with the first end of the load and the first end of the battery, and the second end of the switching circuit is connected with the first end of the motor; the motor generates electric energy through braking energy recovery, wherein the first control unit comprises: and the second control unit is used for controlling the switching circuit to switch so that the load and the motor form a loop.

Further, the apparatus further comprises: the detection unit is used for detecting that the running state of the vehicle is braking or freewheeling; and the third control unit is used for controlling the vehicle to recover the braking energy.

Further, the apparatus further comprises: the judging unit is used for judging whether a battery of the vehicle consumes electric quantity or not after electric energy is generated by recovering braking energy; and the fourth control unit is used for controlling the switching circuit to switch under the condition that the battery consumes the electric quantity, so that the battery and the motor form a loop.

The invention provides a circuit, a method and a device for recovering brake energy, wherein the circuit is applied to a vehicle and comprises the following components: the system comprises a battery, a load relay, a load, a motor and a single-pole double-throw switch; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, and the fixed end of the single-pole double-throw switch is connected with the first end of the motor. The technical problem that in the prior art, the electric energy of the vehicle battery is unnecessarily consumed due to the fact that braking energy is recovered under the condition that the vehicle battery is in a full-power state is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a circuit diagram of a braking energy recovery apparatus according to a first embodiment of the present invention;

FIG. 2 is a flowchart of a braking energy recovery method according to a second embodiment of the present invention;

fig. 3 is a schematic view of a braking energy recovery device according to a third embodiment of the present invention.

Detailed Description

In order to make the above and other features and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that the specific details need not be employed to practice the present invention. In other instances, well-known steps or operations are not described in detail to avoid obscuring the invention.

Example one

The present invention provides a braking energy recovery circuit, which can be applied to a vehicle, and as shown in fig. 1, the braking energy recovery circuit can include:

a battery 102, a load relay 105, a load 106, a motor 104, and a single-pole double-throw switch 108; the first end of the battery 102 is connected with the first end of the load relay 105, the second end of the load relay 105 is connected with the first end of the load 106, the second end of the load 106 is respectively connected with the second end of the battery 102 and the second end of the motor 104, and the stationary end of the single-pole double-throw switch 108 is connected with the first end of the motor 104, wherein when the vehicle meets a first condition, the movable end of the single-pole double-throw switch 108 is connected with the first end, namely the b end, of the load 106, the load relay 105 is disconnected, and when the vehicle does not meet the first condition, the movable end of the single-pole double-throw switch 108 is connected with the first end, namely the a end, of the battery 102, wherein the first condition is that the vehicle is in a braking energy recovery state while the electric quantity state of the vehicle is a preset state.

Specifically, in the present solution, the first condition is that the vehicle is in a braking energy recovery state while the electric quantity state of the vehicle is in a preset state, it should be noted that, when the vehicle recovers the braking energy, the motor 104 of the vehicle may be a generator of the vehicle, that is, the motor 104 generates electric energy, wherein a moving end of a single-pole double-throw switch 108 of the vehicle is automatically switched to be connected to a first end, that is, a b end, of a load 106, and the load relay 105 is in an off state, so that the motor 104 and the load 106 form a loop, and thus the motor 104 supplies power to the load 106, that is, the load does not consume the electric energy stored in the battery, only consumes the electric energy generated by the motor, and reduces unnecessary electric energy loss of the battery 102 of the vehicle. The technical problem that in the prior art, the brake energy is recovered under the condition that the vehicle battery 102 is in a full-power state, so that the electric energy of the vehicle battery is unnecessarily consumed is solved.

In addition, when the vehicle does not meet the first condition, that is, when the vehicle does not need to recover braking energy, the motor 104 of the vehicle may be an engine of the vehicle, at this time, the battery 102 of the vehicle supplies power to the motor 104, after the motor 104 receives the power supplied by the battery 102, the motor 104 provides power for vehicle running, at this time, the moving end of the single-pole double-throw switch 108 of the vehicle is automatically switched to be connected with the first end, that is, the end a, of the battery 102, so that the battery 102 and the motor 104 form a loop, and thus the electric energy generated by the braking energy recovery of the motor 104 supplies power to the battery 102 of the vehicle, thereby increasing the endurance time of the vehicle.

An inverter may be connected to the motor 104, and the motor 104 may be connected to other components through the inverter. The inverter is a converter which converts direct current electric energy (batteries and storage batteries) into constant-frequency constant-voltage or frequency-modulation voltage-regulation alternating current (generally 220V, 50Hz sine wave).

It should be further noted that, in conjunction with fig. 1, herein, the first end of the battery 102 may be a positive electrode of the battery 102, and the second end of the battery 102 may be a negative electrode of the battery 102.

Optionally, the preset state is that the battery 102 is fully charged.

Optionally, as shown in fig. 1, the circuit may further include: the main relay 101 is connected to the battery 102, and the main relay switches the output of the battery on and off.

Optionally, the braking energy recovery is to convert a part of mechanical energy generated when the vehicle brakes or decelerates into other forms of energy through a regeneration system.

Optionally, the load 106 is an electric heater disposed on the vehicle, and the load relay 105 is a thermal relay connected to the electric heater.

Specifically, in this scheme, load 106 can be for setting up the electric heater at the vehicle, load relay 105 can be for the thermal relay of vehicle, it should be explained that the electric heater and thermal relay have all been equipped with at most current vehicles, therefore, this scheme consumes above-mentioned motor 104 braking energy recovery produced electric energy through original electric heater on the vehicle on the one hand, the cost of additionally setting up load 106 in the vehicle has been reduced, on the other hand is through adopting the mode that thermal relay is connected with motor 104, the overload protection of motor 104 has been realized.

Alternatively, the thermal relay 105 may be a heating relay for controlling a heating device.

Compared with the prior art, in the scheme, when the vehicle is in a braking energy recovery state and the electric quantity is in a preset state (for example, the battery 102 is fully charged and cannot receive the electric energy generated by the braking energy recovery of the motor 104), in combination with the mode shown in fig. 1, by adding the switching circuit 107, in the first aspect: when the vehicle meets the first condition, the moving end of the single-pole double-throw switch 108 of the vehicle is automatically switched to be connected with the first end, namely the end b, of the load 106 (electric heater), and meanwhile, the load relay 105 (thermal relay) is in an off state, so that the motor 104 and the load 106 form a loop, the motor 104 supplies power to the load 106 (electric heater), namely, the load 106 does not consume the electric energy stored in the battery 102, only consumes the electric energy generated by the motor 104, and unnecessary electric energy loss of the battery 102 of the vehicle is reduced. The technical problem that in the prior art, when the vehicle battery 102 is in a full-power state, the braking energy is recovered, so that the electric energy of the vehicle battery is unnecessarily consumed is solved. In a second aspect: when the vehicle does not meet the first condition, the movable end of the single-pole double-throw switch 108 of the vehicle is automatically switched to be connected with the first end, namely the end a, of the battery 102, so that the motor 104 and the battery 102 form a loop, the motor 104 supplies power to the battery 102, and the endurance time of the vehicle is prolonged. In addition, the electric energy generated by recovering the braking energy of the motor 104 is consumed by the original electric warm air of the vehicle, so that the cost of additionally arranging a load in the vehicle is reduced.

Example two

The present invention also provides a method of brake energy recovery, which may be applied to a vehicle, as shown in fig. 2, the method including:

in step S21, the state of charge of the vehicle is detected when the vehicle recovers braking energy.

Specifically, in this scheme, a main controller of the vehicle may be used as an execution main body of the scheme, and is configured to control each component and part of the vehicle, where the main controller is connected to a battery of the vehicle, and the main controller detects an electric quantity state of the battery of the vehicle in real time under a condition that braking energy of the vehicle is recovered.

In the braking energy recovery, a part of mechanical energy generated when the vehicle brakes or decelerates is converted into other forms of energy by the regeneration system.

And step S23, under the condition that the electric quantity state of the vehicle is in a preset state, controlling the electric energy generated by recovering the vehicle braking energy to be used for supplying power to the load of the vehicle.

Specifically, in this scheme, when the vehicle recovers braking energy, the motor of the vehicle may be a generator of the vehicle, that is, the motor generates electric energy, wherein when the main controller determines that the electric quantity state of the vehicle conforms to the preset state, the main controller may control the electric energy generated by recovering the braking energy of the vehicle to be used for supplying power to a load of the vehicle.

Optionally, the preset state is a full battery capacity.

Compared with the prior art, in the process of driving the vehicle by a user, under the condition that the vehicle is in the state of braking energy recovery, the main controller detects the electric quantity state, and when the electric quantity of the battery is judged to be in the full electric quantity of the battery, the main controller controls the motor of the vehicle to use the electric energy generated by the vehicle braking energy recovery for supplying power to the load of the vehicle, namely the load does not consume the electric energy stored by the battery, only consumes the electric energy generated by the motor, and reduces unnecessary loss of the electric energy of the battery of the vehicle. The technical problem that in the prior art, the electric energy of the vehicle battery is unnecessarily consumed due to the fact that braking energy is recovered under the condition that the vehicle battery is in a full-power state is solved.

Optionally, as shown in fig. 1, the vehicle further includes: a battery 102, a switching circuit 107, a load relay 105, and a motor 104; a first end of the battery 102 is connected with a first end of the load relay 105, a second end of the load relay 105 is connected with a first end of the load 106, a second end of the load 106 is respectively connected with a second end of the battery 102 and a second end of the motor 104, a first end of the switching circuit 107 is respectively connected with the first end of the load 106 and the first end of the battery 102, and a second end of the switching circuit 107 is connected with the first end of the motor 104; the electric motor 104 generates electric energy through braking energy recovery, wherein the step S23 of controlling the electric energy generated by the vehicle braking energy recovery to be used for supplying power to the load of the vehicle includes:

in step S2301, the switching circuit 107 of the vehicle is controlled to switch so that the load 106 and the motor 104 form a single circuit in which the motor 104 supplies power to the load 106.

Specifically, in the present solution, as shown in fig. 1, the main controller is connected to the switching circuit 107, the switching circuit 107 is connected to the first end of the battery 102 and the first end of the load 106, and when the vehicle recovers the braking energy and the electric quantity of the battery is in a preset state, the main controller controls the switching circuit 107 to switch, so that the motor 104 and the load 106 form a loop, and the motor 104 supplies the electric energy generated by recovering the braking energy to the load 106, that is, the load 106 does not consume the electric energy stored in the battery 102, and only consumes the electric energy generated by the motor 104, thereby reducing unnecessary consumption of the electric energy of the battery 102 of the vehicle.

Alternatively, the load relay may be a thermal relay connected to a load.

As shown in fig. 1, an inverter may be connected to the motor 104, and the motor 104 may be connected to the above-described components through the inverter. The inverter is a converter which converts direct current electric energy (batteries and storage batteries) into constant-frequency constant-voltage or frequency-modulation voltage-regulation alternating current (generally 220V, 50Hz sine wave).

Optionally, before the vehicle performs braking energy recovery, the method further includes:

in step S19, it is detected that the running state of the vehicle is braking or coasting.

Specifically, in the scheme, in the process of driving the vehicle by the user, the main controller detects whether the running state of the vehicle is the vehicle braking state or the vehicle coasting state in real time.

The coasting is an operation in which the driver moves the shift lever to the neutral position, separates the engine from the clutch of the drive wheels, and runs the vehicle by inertia. The braking is an operation of stopping or reducing the speed of a running locomotive, vehicle, other transportation means, machine, or the like.

And step S20, controlling the vehicle to recover braking energy.

Specifically, in the present solution, when the main controller detects that the vehicle is in the vehicle braking state or the vehicle coasting state, the main controller controls the vehicle to recover braking energy.

In the braking energy recovery process of the vehicle, the main controller executes the above steps S21 and S23.

Optionally, in step S23, after controlling the electric energy generated by recovering the vehicle braking energy to be used for supplying power to the load of the vehicle, the method further includes:

in step S25, it is determined whether the battery of the vehicle is in a preset state.

Specifically, in the scheme, a main controller of the vehicle can be connected with the battery, and the main controller judges whether the battery state meets the preset state in real time in the process of driving the vehicle by a user.

Step S27, referring to fig. 1, when the battery does not meet the preset condition, the switching circuit 107 is controlled to switch so that the battery 102 and the motor 104 form a loop in which the motor 104 supplies power to the battery 102.

Specifically, in this scheme, as shown in fig. 1, when the main controller determines that the battery 102 does not conform to the preset state (may be a full state), when the vehicle recovers braking energy, the motor may be a generator of the vehicle, that is, the motor generates electric energy, and the main controller controls the switching circuit 107 to switch, so that the motor 104 and the battery 102 form a loop, and the motor supplies power to the battery through the electric energy generated by recovering the braking energy. In this way, the duration of the vehicle is increased.

It should be noted that, when the main controller determines that the battery is in the preset state, the step S23 is executed, that is, the motor supplies power to the load through the electric energy generated by recovering the braking energy.

Optionally, in any one of step S19 to step S27, the load is an electric heater provided to the vehicle.

Specifically, in this scheme, the load can be for setting up the electric heater at the vehicle, need explain that, all be equipped with electric heater and thermorelay at most current vehicles, from this, this scheme consumes the electric energy that above-mentioned motor braking energy recuperation produced through original electric heater on the vehicle, has reduced the extra cost that sets up the load in the vehicle.

Compared with the prior art, in the running process of the vehicle, when the main controller judges that the vehicle is in a braking energy recovery state and the electric quantity is in a preset state (for example, the electric quantity is full and the battery cannot receive the electric energy generated by the motor braking energy recovery), in the scheme, in combination with the mode shown in fig. 1, the main controller of the vehicle controls the switching circuit 107 of the vehicle to automatically switch in a mode of adding the switching circuit 107, so that the load 106 and the motor 104 form a loop, and the motor 104 supplies the electric energy generated by the vehicle braking energy recovery to the load 106, namely the load 106 does not consume the electric energy stored by the battery 102, only consumes the electric energy generated by the motor 104, and reduces unnecessary electric energy loss of the battery 102 of the vehicle. The technical problem that in the prior art, when the vehicle battery 102 is in a full-power state, the braking energy is recovered, so that the electric energy of the vehicle battery is unnecessarily consumed is solved. In addition, when the battery 102 does not meet the preset state, the main controller of the vehicle controls the switching circuit 107 to automatically switch, so that the motor 104 and the battery 102 form a loop, and the motor 104 recovers the electric energy generated by the braking energy of the vehicle to supply power to the battery 102, thereby increasing the endurance time of the vehicle. In addition, the electric heater which is originally arranged on the vehicle is adopted to consume the electric energy generated by recovering the braking energy of the motor, so that the cost of additionally arranging a load in the vehicle is reduced.

EXAMPLE III

The present invention also provides a braking energy recovery apparatus that can be applied to a vehicle, as shown in fig. 3, the apparatus including: the detection unit 301 is used for detecting the electric quantity state of the vehicle under the condition that the braking energy of the vehicle is recovered; the first control unit 302 is configured to control, when the electric quantity state of the vehicle is full, electric energy generated by recovering vehicle braking energy to supply power to a load of the vehicle.

Through the plurality of units, the scheme provides a scheme for efficiently recovering the braking energy, and the units are arranged in the existing vehicle, so that the technical problem that in the prior art, the electric energy of the vehicle battery is unnecessarily consumed due to the fact that the braking energy is recovered under the condition that the vehicle battery is in a full-power state is solved.

Optionally, the vehicle further comprises: the device comprises a battery, a switching circuit, a load relay and a motor; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the first end of the switching circuit is respectively connected with the first end of the load and the first end of the battery, and the second end of the switching circuit is connected with the first end of the motor; the motor generates electric energy through braking energy recovery, wherein the first control unit comprises: and the second control unit is used for controlling the switching circuit to switch so that the load and the motor form a loop.

Optionally, the apparatus further comprises: the detection unit is used for detecting that the running state of the vehicle is braking or freewheeling; and the third control unit is used for controlling the vehicle to recover the braking energy.

Optionally, the apparatus further comprises: the judging unit is used for judging whether a battery of the vehicle consumes electric quantity or not after electric energy is generated by recovering braking energy; and the fourth control unit is used for controlling the switching circuit to switch under the condition that the battery consumes the electric quantity, so that the battery and the motor form a loop.

It will be understood that the specific features, operations and details described herein above with respect to the method of the present invention may be similarly applied to the apparatus and system of the present invention, or vice versa. In addition, each step of the method of the present invention described above may be performed by a respective component or unit of the device or system of the present invention.

It should be understood that the various modules/units of the apparatus of the present invention may be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each module/unit may be embedded in a processor of the computer device in a hardware or firmware form or independent from the processor, or may be stored in a memory of the computer device in a software form to be called by the processor to perform the operation of each module/unit. Each module/unit may be implemented as a separate component or module, or two or more modules/units may be implemented as a single component or module.

In one embodiment, a computer device is provided that includes a memory and a processor, the memory having stored thereon computer instructions executable by the processor, the computer instructions, when executed by the processor, instruct the processor to perform the steps of the method of embodiment one of the present invention. The computer device may broadly be a server, a terminal, or any other electronic device having the necessary computing and/or processing capabilities. In one embodiment, the computer device may include a processor, memory, a network interface, a communication interface, etc., connected by a system bus. The processor of the computer device may be used to provide the necessary computing, processing and/or control capabilities. The memory of the computer device may include non-volatile storage media and internal memory. An operating system, a computer program, and the like may be stored in or on the non-volatile storage medium. The internal memory may provide an environment for the operating system and the computer programs in the non-volatile storage medium to run. The network interface and the communication interface of the computer device may be used to connect and communicate with an external device through a network. Which when executed by a processor performs the steps of the method of the invention.

The invention may be implemented as a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the steps of a method of an embodiment one of the invention to be performed. In one embodiment, the computer program is distributed across a plurality of computer devices or processors coupled by a network such that the computer program is stored, accessed, and executed by one or more computer devices or processors in a distributed fashion. A single method step/operation, or two or more method steps/operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps/operations may be performed by one or more computer devices or processors, and one or more other method steps/operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step/operation, or perform two or more method steps/operations.

It will be appreciated by those of ordinary skill in the art that the method steps of the present invention may be directed to associated hardware, such as a computer device or processor, for performing the steps of the present invention by a computer program, which may be stored in a non-transitory computer readable storage medium and when executed, cause the steps of the present invention to be performed. Any reference herein to memory, storage, databases, or other media may include non-volatile and/or volatile memory, as appropriate. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (prom), electrically programmable ROM (eprom), electrically erasable programmable ROM (eeprom), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, hard disk, solid state disk, and the like. Examples of volatile memory include Random Access Memory (RAM), external cache memory, and the like.

The respective technical features described above may be arbitrarily combined. Although not all possible combinations of features are described, any combination of features should be considered to be covered by the present specification as long as there is no contradiction between such combinations.

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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit for recovering braking energy, characterized in that it is applied to a vehicle, comprising: the system comprises a battery, a load relay, a load, a motor and a single-pole double-throw switch;

a first end of the battery is connected with a first end of the load relay, a second end of the load relay is connected with a first end of the load, a second end of the load is respectively connected with a second end of the battery and a second end of the motor, a stationary end of the single-pole double-throw switch is connected with a first end of the motor, wherein,

under the condition that the vehicle meets a first condition, the moving end of the single-pole double-throw switch is connected with the first end of the load, and the load relay is disconnected; and under the condition that the vehicle does not meet a first condition, connecting a movable end of the single-pole double-throw switch with a first end of the battery, wherein the first condition is that the vehicle is in a braking energy recovery state and the electric quantity state of the vehicle is in a preset state.

2. The circuit of claim 1, wherein the load is an electric heater provided in a vehicle, and the load relay is a thermal relay connected to the electric heater.

3. A method of braking energy recovery, the method comprising:

detecting the electric quantity state of a vehicle under the condition that the braking energy of the vehicle is recovered;

and under the condition that the electric quantity state of the vehicle is in a preset state, controlling the electric energy generated by recovering the vehicle braking energy to be used for supplying power to a load of the vehicle.

4. The method of claim 3, wherein the vehicle further comprises: the device comprises a battery, a switching circuit, a load relay and a motor; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the first end of the switching circuit is respectively connected with the first end of the load and the first end of the battery, and the second end of the switching circuit is connected with the first end of the motor; the motor generates electric energy through braking energy recovery, wherein the control of the electric energy generated by the vehicle for supplying power to a load of the vehicle comprises:

and controlling a switching circuit of the vehicle to switch so that the load and the motor form a loop in which the motor supplies power to the load.

5. The method of claim 3, further comprising:

detecting that the running state of the vehicle is braking or freewheeling;

and controlling the vehicle to recover braking energy.

6. The method of claim 4, wherein after controlling the use of the electrical energy generated by the vehicle braking energy recovery for powering a load of a vehicle, the method further comprises:

judging whether a battery of the vehicle meets a preset state or not;

and under the condition that the battery does not accord with the preset state, controlling the switching circuit to switch so that the battery and the motor form a loop, and supplying power to the battery by the motor in the loop.

7. The method of any one of claims 3-6, wherein the load is an electric heater disposed on a vehicle.

8. A device for recovering braking energy, characterized in that it comprises:

the detection unit is used for detecting the electric quantity state of the vehicle under the condition that the braking energy of the vehicle is recovered;

and the first control unit is used for controlling the electric energy generated by recovering the vehicle braking energy to supply power to the load of the vehicle under the condition that the electric quantity state of the vehicle is full.

9. The apparatus of claim 8, wherein the vehicle further comprises: the device comprises a battery, a switching circuit, a load relay and a motor; the first end of the battery is connected with the first end of the load relay, the second end of the load relay is connected with the first end of the load, the second end of the load is respectively connected with the second end of the battery and the second end of the motor, the first end of the switching circuit is respectively connected with the first end of the load and the first end of the battery, and the second end of the switching circuit is connected with the first end of the motor; the motor generates electric energy by recovering braking energy, wherein the first control unit includes:

and the second control unit is used for controlling the switching circuit to switch so that the load and the motor form a loop.

10. The apparatus of claim 8, further comprising:

the detection unit is used for detecting that the running state of the vehicle is braking or freewheeling;

and the third control unit is used for controlling the vehicle to recover the braking energy.