KR101278505B1 - Apparatus for drive controlling utilizing one more batteries of a different kind - Google Patents

Apparatus for drive controlling utilizing one more batteries of a different kind Download PDF

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KR101278505B1
KR101278505B1 KR1020080138278A KR20080138278A KR101278505B1 KR 101278505 B1 KR101278505 B1 KR 101278505B1 KR 1020080138278 A KR1020080138278 A KR 1020080138278A KR 20080138278 A KR20080138278 A KR 20080138278A KR 101278505 B1 KR101278505 B1 KR 101278505B1
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vehicle
battery
speed
driving
reference
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KR1020080138278A
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KR20100079725A (en
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권호상
이석훈
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주식회사 엘지화학
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries

Abstract

Driving control apparatus using a heterogeneous battery of the present invention includes a first sensing unit for detecting a vehicle state; Different types of first and second batteries for supplying power to the driving motor to drive the vehicle; A first switching unit for switching the first battery and the second battery; And a first controller configured to control the first switching unit so that a battery corresponding to the vehicle state data input from the first sensing unit supplies power to the driving motor of the vehicle.
According to the present invention, a battery used in a vehicle driven by an electric drive source such as an electric vehicle or a hybrid vehicle is composed of heterogeneous batteries, and the battery is optimized for vehicle conditions or driving conditions such as the speed or load of the vehicle among the heterogeneous batteries. Control to drive the vehicle creates the effect of maximizing the energy efficiency of the vehicle battery pack.

Description

Drive control device using heterogeneous batteries {APPARATUS FOR DRIVE CONTROLLING UTILIZING ONE MORE BATTERIES OF A DIFFERENT KIND}

The present invention relates to an apparatus for controlling the driving of a vehicle by using a battery which is a driving source of an electric vehicle. More specifically, the battery is composed of heterogeneous batteries having different outputs or capacities, and using the vehicle. It relates to a device for controlling the driving of.

Engine-driven vehicles that use fossil fuels such as gasoline or diesel as their main energy sources have a significant impact on pollution and pollution, including noise and air pollution. Ongoing efforts are being made to develop hybrid vehicles.

An electric vehicle refers to a vehicle driven by supplying electric energy output from a battery to a battery engine such as a motor which is a vehicle driving source. The electric vehicle includes a plurality of secondary battery cells that can be charged and discharged. Since the electric energy of the battery is configured in the form of the exhaust gas does not generate and has the advantage of little noise.

The aforementioned hybrid vehicle refers to a vehicle in which a vehicle using an internal combustion engine of fossil fuel and an electric battery are harmonized. In recent years, the hybrid vehicle continuously supplies hydrogen and oxygen and is caused by the gas supplied. BACKGROUND ART Vehicles that use fuel cells that generate electrical energy through chemical reactions, or a combination of a driving source of such fuel cells and the aforementioned internal combustion engine or battery electric engine, have appeared.

However, in the case of a battery mainly used in an electric vehicle, conventionally, only a battery having one physical or electrical characteristic is used regardless of the state of the vehicle's speed and load by focusing only on the aspect of supplying electricity. The problem of the efficiency of driving the vehicle according to the physical or electrical characteristics of the battery that generates the electrical energy by discharging the electric charge is not considered at all.

That is, in the vehicle using the conventional electric drive source, the battery drive control that can complement the complementary characteristics such as the capacity or power of the battery that supplies the electric energy is not made.

The present invention was devised to solve such a problem in the above-described background, and it is possible to increase the use time of the battery and to operate the output (power) of the vehicle drive in a harmonious manner, thereby providing the battery as an optimized electric drive source according to the vehicle condition. An object of the present invention is to provide a drive control device of a heterogeneous battery that can utilize.

Other objects and advantages of the present invention will be described below and will be appreciated by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by a combination of the constitution and the constitution shown in the claims.

Driving control apparatus using a heterogeneous battery of the present invention for realizing the above object comprises a first sensing unit for detecting a vehicle state; Different types of first and second batteries for supplying power to the driving motor to drive the vehicle; A first switching unit for switching the first battery and the second battery; And a first controller configured to control the first switching unit so that a battery corresponding to the vehicle state data input from the first sensing unit supplies power to the driving motor of the vehicle.

For a more preferred embodiment, it may further comprise a first charge control unit for controlling to charge the battery that does not supply power to the drive motor, wherein the first and second batteries are high capacity low output battery and low capacity high output battery It can be configured as.

The first control unit may control the high capacity low output battery to supply power to the driving motor when the vehicle state data is less than the first reference speed, and the low capacity when the vehicle state data is greater than the first reference speed. A high output battery is controlled to supply power to the drive motor.

The first control unit may control the high-capacity low-output battery to supply power to the driving motor when the vehicle state data is less than the first reference weight, and the vehicle state data is greater than the first reference weight. When large, the low capacity high output battery may be configured to control to supply power to the drive motor.

On the other hand, the drive control device using a heterogeneous battery for implementing another embodiment of the present invention includes a second sensing unit for detecting a vehicle state; Different types of third and fourth batteries for supplying electric power to the driving motor to drive the vehicle; An engine driving unit for driving the vehicle using an engine; A second switching unit for switching the third battery, the fourth battery and the engine driver; And a second controller configured to control a driving source corresponding to the vehicle state data input from the second sensing unit among the third battery, the fourth battery, or the engine driving unit to drive the vehicle.

In addition, more preferably, the engine driving unit may further include a second charge control unit for controlling the third battery and the fourth battery to be charged when driving the vehicle, the second charge control unit is One battery of the third battery and the fourth battery is configured to control the other battery to be charged when driving the vehicle.

In addition, the third battery and the fourth battery are more preferably configured of a high capacity low output battery and a low capacity high output battery.

For a more preferred embodiment, the second control unit controls the engine driver to drive the vehicle when the vehicle state data is greater than a second reference speed, and is smaller than the second reference speed and greater than a third reference speed. The low-capacity high output battery may be controlled to drive the vehicle, and when the lower capacity high output battery is smaller than the third reference speed, the high-capacity low output battery may be controlled to drive the vehicle.

The second control unit may control the engine driving unit to drive the vehicle when the vehicle state data is greater than a second reference speed, and the high capacity low output battery is less than the second reference speed and less than the second reference weight. The controller may be configured to control the driving of the vehicle, and to control the low-capacity high-output battery to drive the vehicle when the vehicle is smaller than the second reference speed and larger than the second reference weight.

Vehicle driving control apparatus using a heterogeneous battery according to the present invention is to divide the state of the vehicle into a state according to the speed or load degree, and to increase the use time of the battery by controlling the optimized battery according to the divided state to be the driving source Create effects that can be.

In addition, by controlling the optimized battery to be a driving source, it is possible to effectively provide the output of electrical energy in accordance with the state of the vehicle can provide an effect that can increase the output of the vehicle.

In addition, when one of the heterogeneous batteries is the driving source, by controlling the battery that is not so, it is possible to generate higher efficiency even in electrical energy charging and discharging.

The electric vehicle can be realized more economically and effectively through the maximization of energy efficiency based on the above characteristics.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Hereinafter, a driving control apparatus using a heterogeneous battery and a control method using the same according to an embodiment of the present invention will be described in detail.

Referring to FIG. 1, which is a block diagram illustrating a configuration of a drive control apparatus 100 using heterogeneous batteries according to an exemplary embodiment of the present invention, the drive control apparatus 100 of the present invention may include a first sensing unit 110. ), The first switching unit 120, the first battery 130, the second battery 140, the first control unit 150 and the first charge control unit 160 may be configured.

In the description of the present invention, the use of the terms first, second, third, or fourth is not a term used to mean an order of ordinal meaning or a rank of importance, but a component rather than another component. Clarify the terminology used to distinguish it from

The first sensing unit 110 of the driving control apparatus 100 of the present invention detects the state of the vehicle (S300). The vehicle refers to a vehicle driven by electric energy by a battery, and the state of the vehicle refers to a driving condition of the vehicle such as a speed and a load of the vehicle. Therefore, the first sensing unit 110 means a speed sensor for detecting the speed of the vehicle or a weight sensor for detecting the load of the vehicle, and it is apparent that such a sensor can be variously applied according to embodiments among those skilled in the art.

According to the present invention, as mentioned in the problems of the prior art, the battery for supplying electric energy to the vehicle is configured with different types of batteries, and the vehicle is sensed by the state or the driving condition of the vehicle sensed by the first sensing unit 100. The optimized battery is used as a driving source among heterogeneous batteries.

In other words, the driving control apparatus 100 of the present invention supplies power to a driving motor for driving the electric vehicles (EVs) to drive the electric vehicle to different types of first batteries 130 and a second type. The battery 140 is provided, and the first switching unit 120 of the present invention switches the first battery 130 and the second battery 140 such that a battery optimized for a vehicle state is supplied with power to the driving motor. To be supplied.

The switching of the first switching unit 120 is controlled by the first control unit 150 of the present invention. The first control unit 150 receives the state data of the vehicle from the first sensing unit 110. In operation S310, the first controller 150 determines a battery corresponding to the detected vehicle state data (S320) so that the battery corresponding to the input vehicle state data supplies power to the driving motor of the vehicle. The first switching unit 120 is controlled (S330).

Of course, the battery corresponding to the state data of the vehicle may be configured to be preset, and the first battery and the second battery may be respectively configured to perform a complementary role of driving the vehicle in terms of battery capacity and output. It is preferable to configure the low-capacity high-output battery so that the battery optimized as the vehicle's state data is an electric energy driving source.

In addition, the first charge control unit 160 of the present invention controls to charge a battery that does not supply power to the drive motor when one of the different batteries is a drive source for driving a drive motor or the like ( S340). The first charge controller 160 controls the non-driven battery to be charged by converting the physical driving energy according to the driving of the vehicle into electrical energy and supplying the converted electrical energy to a battery that does not supply power to the driving motor. .

Hereinafter, a configuration in which different types of batteries are controlled to be complementary driving sources according to the state of the vehicle in order to maximize energy efficiency, which is one of the main features of the present invention, will be described in detail.

First, the first controller 150 of the present invention controls the high capacity low output battery to supply power to the driving motor when the vehicle state data input from the first sensing unit 110 is smaller than a first reference speed. When the vehicle state data is greater than the first reference speed, the low capacity high output battery is controlled to supply power to the driving motor.

The first reference speed refers to a magnitude value of a reference speed for distinguishing a state of the vehicle according to the speed of the vehicle, and may be set at the time of shipment of the vehicle as a default value to the system, as well as by a user's input. Of course, it can be configured to receive a value and selectively adjustable.

In general, the size of the current that can be output and the amount of charge (the amount of current) that can be emitted are determined physically. However, when the vehicle is smaller than the first reference speed as described above, high power is not required. In this case, since a continuous output is more preferable than a high output, the high capacity low output battery is controlled to supply power to the driving motor as described above.

On the contrary, when the vehicle is currently larger than the first reference speed, since a high output is required rather than a continuous output, in this case, the low capacity high output battery controls the power supply to the driving motor.

Schematic of the above described in Table 1 as follows.

Figure 112008091029812-pat00001

As shown in Table 1, when the vehicle is in a high-speed driving state larger than the first reference speed, the high capacity low output battery is controlled to be charged, and the low capacity high output battery is discharged so as to supply power to the driving motor to drive the vehicle.

According to an embodiment, the first controller 150 may be configured to supply the power to the driving motor when the high-capacity low-output battery is supplied when the vehicle state data input from the first sensing unit 100 is less than a first reference weight. If the vehicle state data is greater than the first reference weight, the low-capacity high-output battery may be controlled to supply power to the driving motor so that the battery optimized to be the driving source may be controlled according to the load or weight of the vehicle.

Figure 112008091029812-pat00002

As shown in Table 2, when the weight or load of the vehicle is in a low weight state smaller than the first reference weight, the high capacity low output battery supplies power to the driving motor to control the vehicle to be driven, and the low capacity high output battery uses the driving motor. To be charged.

As described above, the first reference weight does not mean any absolute value, but refers to a reference value capable of distinguishing a state of a vehicle weight or load, and various setting examples are possible according to the embodiment. .

Hereinafter, referring to FIGS. 2 and 4, the driving control apparatus according to another embodiment of the present invention will be described.

Components having the same or similar terminology are the same or similar in function even if the reference numerals are not the same, and thus, duplicated descriptions will be omitted in order to increase the efficiency of the description.

Embodiments described below correspond to embodiments of a hybrid vehicle in which different types of batteries, internal combustion engines, and the like are driven together.

The driving control apparatus 200 according to the above embodiment includes the second sensing unit 210, the second switching unit 220, the third battery 230, the fourth battery 240, the engine driving unit 250, and the second. It may be configured to include a control unit 260 and the second charge control unit 270.

The engine driving unit 250 refers to a driving unit such as an internal combustion engine engine or a fuel cell engine that is operated by a drive different from the drive by the electric energy by the battery.

The second switching unit 220 switches the third battery 230, the fourth battery 240, and the engine driver 250 under the control of the second controller 260. In the above embodiment, the second sensing unit 210 senses the state of the vehicle such as the weight or the load of the vehicle (S400). When the vehicle state data is input from the second sensing unit 210 (S410). The second control unit 260 determines the driving source corresponding to the vehicle state data (S420), and the driving source corresponding to the third battery 230, the fourth battery 240, or the engine driving unit 250 controls the vehicle. Control to drive (S430).

In addition, the second charge control unit 270 controls the third battery 230 and the fourth battery 240 to be charged when the engine driver 250 drives the vehicle, and further, the third battery. When one battery of the 230 and the fourth battery 240 drives the vehicle, the other battery is controlled to be charged (S440).

The process of controlling the driving source according to each state of the vehicle will be described in detail as follows.

First, as described above, the third battery and the fourth battery are each configured as a high capacity low output battery and a low capacity high output battery to perform a complementary role of driving the vehicle in terms of capacity and output, and are optimized according to the state data of the vehicle. It is preferable to configure the battery to be an electric energy driving source.

According to another preferred embodiment of the present invention, the second controller 260 controls the engine driver to drive the vehicle when the vehicle state data input from the second sensing unit 210 is greater than a second reference speed. The control unit controls the low capacity high output battery to drive the vehicle when it is smaller than the second reference speed and exceeds the third reference speed, and when the value is smaller than the third reference speed, the high capacity low output battery drives the vehicle.

The control mechanism describes a form in which each driving source drives the vehicle based on the current speed of the vehicle. In the state of the highest speed, the engine driving unit controls the engine to drive the engine, and in the case of medium speed. The low-capacity high-output battery is controlled to drive the vehicle, and the low-capacity high-output battery is configured to control the high-capacity low-output battery to drive the vehicle, thereby configuring the most optimized driving form in terms of energy efficiency.

The above contents are summarized in Table 3 below.

Figure 112008091029812-pat00003

On the other hand, each drive source can be configured to be controlled on the basis of the current load or weight of the vehicle, for this configuration, the second control unit 260 is the vehicle state data input from the second sensing unit 210 Is greater than a second reference speed, the engine driving unit controls the vehicle to be driven, and when smaller than the second reference speed and less than the second reference weight, the high capacity low output battery is controlled to drive the vehicle and the second reference When the speed is smaller than the second reference weight, the low capacity high output battery may be controlled to drive the vehicle.

The above contents are summarized in Table 4.

Figure 112008091029812-pat00004

The battery described above may be configured in the form of a pack, and of course, different types of different batteries may be configured in one battery pack, that is, in a single pack.

In describing the present invention, each component of the driving control apparatus using a heterogeneous battery according to the present invention should be understood as logically divided components rather than physically divided components.

That is, since each configuration corresponds to a logical component for realizing the technical idea of the present invention, even if each component is integrated or separated, if the functions performed by the logical configuration of the present invention can be realized, It is to be understood that the present invention should not be construed as being within the scope of the present invention regardless of the consistency of the names of components constituting the same or similar functions.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical spirit of the present invention, the present invention includes matters described in such drawings. It should not be construed as limited to.

1 is a block diagram showing the configuration of a drive control apparatus using a heterogeneous battery according to a preferred embodiment of the present invention;

Figure 2 is a block diagram showing the configuration of a drive control device using a heterogeneous battery according to another embodiment of the present invention,

3 is a flowchart illustrating a driving control process using a heterogeneous battery according to a preferred embodiment of the present invention;

4 is a flowchart illustrating a driving control process using a heterogeneous battery according to another exemplary embodiment of the present invention.

Claims (11)

  1. A first sensing unit configured to detect a vehicle state including at least one of a speed and a weight of the vehicle;
    Different types of first and second batteries for supplying power to the driving motor to drive the vehicle;
    A first switching unit for switching the first battery and the second battery; And
    The battery of any one of the first and second batteries may be compared with reference data including at least one of a first reference speed and a first reference weight by comparing data regarding the vehicle state input from the first sensing unit. And a first control unit controlling the first switching unit to supply electric power to a driving motor of the vehicle.
  2. The method of claim 1,
    And a first charge control unit configured to control the battery not supplying power to the driving motor to be charged by the energy generated by the driving of the vehicle.
  3. The method of claim 1,
    The first battery is a drive control device using a heterogeneous battery, characterized in that the high capacity low output battery than the second battery.
  4. The method of claim 3, wherein the first control unit,
    When the speed of the vehicle is less than the first reference speed, the first battery is controlled to supply power to the driving motor. When the speed of the vehicle is greater than the first reference speed, the second battery is driven by the driving motor. Driving control device using a heterogeneous battery, characterized in that for controlling to supply power to.
  5. The method of claim 3, wherein the first control unit,
    When the weight of the vehicle is less than the first reference weight, the first battery is controlled to supply power to the driving motor, and when the weight of the vehicle is greater than the first reference weight, the second battery is the driving motor. Driving control device using a heterogeneous battery, characterized in that for controlling to supply power to.
  6. A second sensing unit sensing a vehicle state including at least one of a speed and a weight of the vehicle;
    Different types of third and fourth batteries for supplying electric power to the driving motor to drive the vehicle;
    An engine driver for driving the vehicle and the vehicle selectively;
    Selective switching operation may be such that any one of the third battery and the fourth battery is connected to the drive motor to supply power to drive the vehicle or to drive the vehicle by the engine driver. 2 switching unit; And
    And a second controller configured to control the selective switching operation of the second switching unit by comparing the data regarding the state of the vehicle input from the second sensing unit with reference data including at least one of a reference speed and a reference weight. Driving control device using a heterogeneous battery, characterized in that.
  7. The method according to claim 6,
    When the engine driving unit drives the vehicle further comprises a second charge control unit for controlling the third battery and the fourth battery to be charged by the energy generated by the driving of the vehicle Drive control.
  8. The method of claim 7, wherein the second charge control unit,
    When one battery of the third battery and the fourth battery drives the vehicle, the drive control device using a heterogeneous battery, characterized in that for controlling the other battery to be charged by the energy generated by the driving of the vehicle.
  9. The method according to claim 6,
    The third battery is a drive control device using a heterogeneous battery, characterized in that the high capacity low output battery than the fourth battery.
  10. 10. The method of claim 9,
    The reference speed includes a second reference speed and a third reference speed having a value less than the second reference speed,
    The second controller is configured to control the engine driver to drive the vehicle when the speed of the vehicle is greater than the second reference speed, and when the speed of the vehicle is smaller than the second reference speed and greater than a third reference speed. And controlling the fourth battery to be connected to the driving motor, and controlling the third battery to be connected to the driving motor when the speed of the vehicle is less than the third reference speed. Device.
  11. 10. The method of claim 9,
    The reference speed includes a second reference speed,
    The reference weight includes a second reference weight,
    The second controller is configured to control the engine driver to drive the vehicle when the speed of the vehicle is greater than the second reference speed, the speed of the vehicle is smaller than the second reference speed, and the weight of the vehicle is second. The third battery is controlled to be connected to the driving motor when the reference weight is smaller than the reference weight. When the speed of the vehicle is smaller than the second reference speed and the weight of the vehicle is larger than the second reference weight, the fourth battery is connected. Driving control device using a heterogeneous battery, characterized in that for controlling to drive the vehicle.
KR1020080138278A 2008-12-31 2008-12-31 Apparatus for drive controlling utilizing one more batteries of a different kind KR101278505B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10271694A (en) * 1997-03-24 1998-10-09 Nissan Motor Co Ltd Charging/discharging system of secondary battery
JP2002044806A (en) 2000-07-25 2002-02-08 Keiyo Ito Charging system for electric vehicle
WO2008041418A1 (en) * 2006-09-29 2008-04-10 Toyota Jidosha Kabushiki Kaisha Power supply and vehicle having same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10271694A (en) * 1997-03-24 1998-10-09 Nissan Motor Co Ltd Charging/discharging system of secondary battery
JP2002044806A (en) 2000-07-25 2002-02-08 Keiyo Ito Charging system for electric vehicle
WO2008041418A1 (en) * 2006-09-29 2008-04-10 Toyota Jidosha Kabushiki Kaisha Power supply and vehicle having same

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