CN113002328A - Portable battery pack and electric vehicle power supplementing system - Google Patents
Portable battery pack and electric vehicle power supplementing system Download PDFInfo
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- CN113002328A CN113002328A CN202110246726.3A CN202110246726A CN113002328A CN 113002328 A CN113002328 A CN 113002328A CN 202110246726 A CN202110246726 A CN 202110246726A CN 113002328 A CN113002328 A CN 113002328A
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- 230000001502 supplementing effect Effects 0.000 title description 4
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 39
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a portable battery pack and an electric vehicle power supply system, which comprises: the portable battery pack is configured to be connected to an electric automobile high-voltage system through a bidirectional direct-current voltage converter, the control module selects different control modes according to the state of the electric automobile, and when the electric automobile runs and/or is not charged through a self-charging interface, the control module selects a first control mode to control the bidirectional direct-current voltage converter to supply power to the electric automobile high-voltage system through the battery module. By utilizing the portable battery pack, inconvenience caused by the fact that a pure electric vehicle needs to be charged through the charging pile can be effectively avoided or reduced, dependence of the pure electric vehicle on charging infrastructure can be reduced, and use experience of the electric vehicle is optimized.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a portable battery pack and an electric automobile power supplementing system.
Background
The pure electric vehicle is energy-saving and environment-friendly, and is a future trend. However, due to the influence of the popularization rate of charging infrastructure, the charging parking space is limited, the charging cannot be as convenient as refueling, and many consumers are reluctant to select pure electric vehicles.
Disclosure of Invention
The invention aims to provide a portable battery pack and an electric vehicle power supplementing system to solve the problem that an electric vehicle in the prior art is inconvenient to charge.
In order to solve the technical problem, the invention provides a portable battery pack, wherein the portable battery pack is detachably connected with an electric vehicle high-voltage system through a bidirectional direct-current voltage converter, and is configured to supply power to the electric vehicle high-voltage system when the electric vehicle is connected to the electric vehicle high-voltage system and the electric vehicle runs normally or is not charged through a self-charging interface.
Optionally, in the portable battery pack, the portable battery pack is further configured to, when the high-voltage system of the electric vehicle is connected, if the electric vehicle is charged through the self-charging interface, charge the battery pack after the electric quantity of the battery pack of the high-voltage system of the electric vehicle is fully charged.
Optionally, in the portable battery pack, the portable battery pack includes a control module and a battery module, the control module is used for adjusting the output power of the bidirectional dc voltage converter according to the state of the electric vehicle, so that when the electric vehicle normally operates or is not charged through a self-charging interface, the battery module supplies power to the electric vehicle high-voltage system, and when the electric vehicle is charged through the self-charging interface, the battery module charges after the electric quantity of the battery pack of the electric vehicle high-voltage system is fully charged.
Optionally, in the portable battery pack, the adjusting, by the control module, the output power of the bidirectional dc-to-dc converter according to the state of the electric vehicle includes:
if the electric automobile runs normally or is not charged through the self-charging interface, controlling the bidirectional direct-current voltage converter to output power to the electric automobile high-voltage system so that the battery module supplies power to the electric automobile high-voltage system;
and if the electric automobile is charged through the self-charging interface, controlling the bidirectional direct-current voltage converter not to output power to the battery module until the electric quantity of a battery pack of the high-voltage system of the electric automobile is full.
Optionally, in the portable battery pack, the adjusting, by the control module, the output power of the bidirectional dc-to-dc converter according to the state of the electric vehicle further includes:
when the portable battery pack supplies power to the electric automobile high-voltage system until the electric quantity is lower than a preset electric quantity value, the bidirectional direct-current converter is controlled to stop outputting power to the electric automobile high-voltage system, and therefore the battery module stops supplying power.
Optionally, in the portable battery pack, the adjusting, by the control module, the output power of the bidirectional dc-to-dc converter according to the state of the electric vehicle further includes:
and after the electric quantity of a battery pack of the high-voltage system of the electric automobile is fully charged, controlling the bidirectional direct-current voltage converter to output power to the battery module at a preset power value so as to charge the battery module.
Optionally, in the portable battery pack, the battery pack has a charge-discharge interface and a communication interface, the battery module is electrically connected to the bidirectional dc voltage converter through the charge-discharge interface, and the control module is in communication connection with the bidirectional dc voltage converter through the communication interface.
Optionally, in the portable battery pack, the electric capacity of the portable battery pack is not less than 500Wh and not more than 5 KWh.
Optionally, in the portable battery pack, the voltage when the portable battery pack is fully charged does not exceed 60V.
The invention also provides an electric vehicle power supply system, which comprises: the portable battery pack comprises a bidirectional direct-current voltage converter and the portable battery pack as described above, wherein the bidirectional direct-current voltage converter is used for detachably connecting the portable battery pack to a high-voltage system of the electric automobile.
Optionally, in the electric vehicle power supply system, the electric vehicle power supply system further includes: the charger is used for connecting the portable battery pack into a power supply to charge the portable battery pack.
Optionally, in the electric vehicle power supply system, the charger is an ac-to-dc charger, and is configured to connect the portable battery pack to a 220V ac power supply to charge the portable battery pack.
In summary, the portable battery pack and the electric vehicle power supply system provided by the invention include: the portable battery pack is detachably connected with the electric automobile high-voltage system through the bidirectional direct-current voltage converter and is configured to supply power to the electric automobile high-voltage system if the electric automobile runs normally or is not charged through the self-charging interface when the electric automobile high-voltage system is connected. By utilizing the portable battery pack, inconvenience caused by the fact that a pure electric vehicle needs to be charged through the charging pile can be effectively avoided or reduced, dependence of the pure electric vehicle on charging infrastructure can be reduced, and use experience of the electric vehicle is optimized.
In addition, according to the portable battery pack and the electric vehicle power supply system provided by the invention, when the electric vehicle high-voltage system is connected, if the electric vehicle is charged through the self-charging interface, the electric vehicle is charged after the electric quantity of the battery pack of the electric vehicle high-voltage system is fully charged. That is to say, the portable battery package has different charge-discharge modes according to the state difference of electric automobile, and when electric automobile charges through self-charging interface, portable battery package is connected with it, does not influence its normal charging, and when electric automobile can't charge through self-charging interface, portable battery package can charge to it, increases its duration. So, make when portable battery package applied to electric automobile, can compatible original electric automobile's high-voltage system and original mode of charging, need not redesign current electric automobile high-voltage system.
Drawings
Fig. 1 is a schematic diagram illustrating a connection relationship between an electric vehicle power supply system and an electric vehicle high-voltage system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of charging a portable battery pack according to an embodiment of the invention.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures.
Referring to fig. 1 and 2, an embodiment of the present invention provides a portable battery pack, which is detachably connected to an electric vehicle high-voltage system through a bidirectional dc voltage converter, and is configured to supply power to the electric vehicle high-voltage system when the electric vehicle is connected to the electric vehicle high-voltage system and the electric vehicle is normally operated or is not charged through a self-charging interface.
This embodiment provides portable battery package can effectually avoid or reduce pure electric vehicles and need charge the inconvenience that brings through filling electric pile, can reduce pure electric vehicles to the dependence of charging infrastructure, optimizes electric vehicles's use impression.
The electric automobile is powered by a high-voltage system, and fig. 1 schematically shows a composition schematic diagram of a high-voltage system of an electric automobile, which comprises: when the electric automobile needs to be charged, the direct-current quick-charging interface is communicated with a charging pile so as to fully charge the electric quantity of the whole high-voltage battery pack. In other existing high-voltage systems of electric vehicles, the direct-current fast charging interface may also be replaced by an alternating-current slow charging interface, and in the description of the present invention, the direct-current fast charging interface and the charging slow charging interface are collectively referred to as an electric vehicle self-charging interface.
As shown in fig. 1, the portable charging pack provided by this embodiment can be connected to the high-voltage system of the electric vehicle by using a bidirectional dc voltage converter without affecting the original circuit structure of the high-voltage system of the electric vehicle. Specifically, one end of the bidirectional direct-current voltage converter is connected between the battery main relay and the whole vehicle high-voltage battery pack, and the other end of the bidirectional direct-current voltage converter is connected with the portable battery pack.
As mentioned above, when the portable battery pack provided by this embodiment is connected to the high-voltage system of the electric vehicle, if the electric vehicle is in normal operation or is not charged through the self-charging interface, the portable battery pack supplies power to the high-voltage system of the electric vehicle. In addition, in this embodiment, the portable battery pack is further configured to, when the high-voltage system of the electric vehicle is connected, if the electric vehicle is charged through the self-charging interface, charge the battery pack of the high-voltage system of the electric vehicle (i.e., the whole vehicle high-voltage battery pack) after the electric quantity of the battery pack is fully charged.
That is to say, the portable battery package has different charge-discharge modes according to the state difference of electric automobile, and when electric automobile charges through self-charging interface, portable battery package is connected with it, does not influence its normal charging, and when electric automobile can't charge through self-charging interface, portable battery package can charge to it, increases its duration. So, make when portable battery package applied to electric automobile, can compatible original electric automobile's high-voltage system and original mode of charging, need not redesign current electric automobile high-voltage system.
Specifically, this embodiment provides portable battery package can include control module and battery module, control module is used for adjusting according to electric automobile's state the output of two-way direct current voltage converter to when making electric automobile normal operating or not charging through self-charging interface, battery module to electric automobile high voltage system power supply to and when making electric automobile charge through self-charging interface, battery module is in the electric quantity of electric automobile high voltage system's battery package is full of the back, charges again.
That is to say, the control module enables the portable battery pack and the electric vehicle high-voltage system to present different charging and discharging modes by changing the output power of the bidirectional direct-current voltage converter.
Wherein the control module adjusting the output power of the bidirectional dc voltage converter according to the state of the electric vehicle includes:
if the electric automobile runs normally or is not charged through the self-charging interface, controlling the bidirectional direct-current voltage converter to output power to the electric automobile high-voltage system so that the battery module supplies power to the electric automobile high-voltage system; when the output power of the bidirectional direct-current voltage converter exceeds the power consumption of the high-voltage load of the whole vehicle, the output power can charge the high-voltage battery pack of the whole vehicle, and when the output power of the bidirectional direct-current voltage converter is lower than the power consumption of the high-voltage load of the whole vehicle, the high-voltage battery pack of the whole vehicle discharges outwards. Further, when the portable battery pack supplies power to the electric vehicle high-voltage system until the electric quantity is lower than a preset electric quantity value, the bidirectional direct current converter is controlled to stop outputting power to the electric vehicle high-voltage system, and therefore the battery module stops supplying power. Preferably, the preset electric quantity value is greater than 0, so as to prevent the battery module from being damaged due to over-discharge.
The control module adjusts the output power of the bidirectional direct-current voltage converter according to the state of the electric vehicle and further comprises:
and if the electric automobile is charged through the self-charging interface, controlling the bidirectional direct-current voltage converter not to output power to the battery module until the electric quantity of a battery pack of the high-voltage system of the electric automobile is full. Further, after the battery pack of the high-voltage system of the electric vehicle is fully charged, the bidirectional direct-current voltage converter is controlled to output power to the battery module at a preset power value so as to charge the battery module.
That is, after the high-voltage battery pack of the electric vehicle high-voltage system is fully charged, if the charging interface of the electric vehicle is still connected to the charging pile, the portable battery pack starts to be charged. Therefore, under the condition that the self charging function of the electric automobile is not influenced, the long waste of charging time is also avoided. For example, when the electric automobile is charged without going out at night, the charging time is long, and the portable battery pack can be charged after the electric automobile is fully charged with the electric quantity of the original battery pack, so that the portable battery pack is not taken down from the electric automobile to be charged independently, and convenience is brought to the use of the portable battery pack.
In this embodiment, the battery module may be, for example, a relatively light lithium battery or a farad capacitor, and the control module may be, for example, an integrated chip, and has little influence on the overall weight of the portable battery pack.
The portable battery pack provided in this embodiment further includes a charge/discharge interface and a communication interface, the battery module is electrically connected to the bidirectional dc voltage converter through the charge/discharge interface, and the control module is connected to the bidirectional dc voltage converter through the communication interface in a communication manner. The charging and discharging interface and the communication interface are arranged to facilitate connection or disconnection between the portable battery pack and the bidirectional direct-current voltage converter.
In the portable battery pack provided in this embodiment, for the sake of completeness, preferably, the voltage of the battery module when fully charged is not more than 60V, and further preferably, the portable battery pack is a 48V battery pack, and after the 48V battery pack is fully charged, the voltage is about 52V to 52.8V, and no extra high-voltage protection measure is needed, so that an ordinary person can safely take down or mount the portable battery pack from a vehicle, and charge the portable battery pack at a place where an ac power supply is provided, so that while larger electric energy can be provided, potential safety hazards can also be avoided.
In addition, it is preferable that the present embodiment provides the portable battery pack with a capacity of not less than 500Wh and not more than 5 KWh. Generally, the density of the existing battery is about 200Wh/Kg, and the weight of the corresponding battery pack is 2.5 Kg-25 Kg, so that a normal adult can take the portable 48V battery pack out to a home or any place with a 220V power supply to independently charge. Using a portable ac to dc 48V charger with low power (e.g., 1 kw), the portable 48V battery pack can be fully charged for 2 hours.
Assuming that 1 kilowatt-hour of electricity can travel 8 kilometers, a single charge of a 20kg portable 48V battery pack can support a range of approximately 16 kilometers. If the design of the portable battery pack is more humanized. For example, for reference to a luggage case, the base is provided with wheels and the upper end is provided with a pull rod, which is similar to a small pull rod case. Therefore, the battery pack can be taken out and taken to the home or any place with a power supply to be independently charged. The weight of the portable battery pack can be further increased, and if 20 kilograms of the portable battery pack is used, 4 kilowatt-hours of electric energy can be stored. The corresponding endurance mileage can reach 32 kilometers. 32 km can cover most one-way commuting requirements in china. Thus, the electric vehicle does not need to depend on a charging pile. Even if the daily commuting mileage requirement cannot be covered by 32 kilometers, the charging times of the user in the charging pile can be greatly reduced through the daily supplementary electric energy.
The embodiment of the invention also provides an electric vehicle power supply system, which comprises: the portable battery pack that two DC converters and this embodiment provided, two-way DC voltage converter will portable battery package is dismantled and is connected in electric automobile high voltage system.
The double direct current converters can be placed on a vehicle all the time and connected into a high-voltage system of the electric vehicle, and the portable battery pack can be taken down or installed according to requirements.
The converted voltage of the dual dc converter should be the same as the open circuit voltage of the battery module of the portable battery pack. For example, if the battery module is 48V, the dual dc converter is a 48V dual dc converter, which can convert a high voltage, for example 220V, to 48V.
In addition, as shown in fig. 2, the electric vehicle power supply system provided in this embodiment further includes a charger, where the charger is configured to connect the battery pack to a power supply to charge the battery module of the battery pack. Specifically, the charger is an alternating current-to-direct current charger and is used for connecting the battery pack to a 220V alternating current power supply to charge the battery module, so that the portable charging pack can be charged at any place with common alternating current power supply. Likewise, the conversion voltage of the ac to dc charger should be the same as the open circuit voltage of the battery module. For example, if the battery module has a voltage of 48V, the ac-to-dc charger is 48V.
The electric vehicle power supply system provided by the embodiment is used as follows:
when the electric quantity of the battery car does not meet the travel requirement and a proper charging pile cannot be found, the portable battery pack is taken down from the car, and a place with common alternating current power supply is found to be charged by using a charger;
after the portable battery pack is charged, the portable battery pack is connected with the bidirectional direct-current voltage converter, the portable battery pack is used for charging a high-voltage battery pack of an electric automobile high-voltage system, or after the electric automobile starts to run, the bidirectional direct-current voltage converter is controlled to supply power to the electric automobile high-voltage system by using the battery module.
In summary, the portable battery pack and the electric vehicle power supply system provided by the invention include: the portable battery pack is detachably connected with the electric automobile high-voltage system through the bidirectional direct-current voltage converter and is configured to supply power to the electric automobile high-voltage system if the electric automobile runs normally or is not charged through the self-charging interface when the electric automobile high-voltage system is connected. By utilizing the portable battery pack, inconvenience caused by the fact that a pure electric vehicle needs to be charged through the charging pile can be effectively avoided or reduced, dependence of the pure electric vehicle on charging infrastructure can be reduced, and use experience of the electric vehicle is optimized.
It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (12)
1. The utility model provides a portable battery package, its characterized in that, portable battery package can dismantle with electric automobile high voltage system through two-way DC voltage converter and be connected, and is configured to, when the access when electric automobile high voltage system, if electric automobile normal operating or not through self charging interface charging, then to electric automobile high voltage system supplies power.
2. The portable battery pack of claim 1, wherein the portable battery pack is further configured to be recharged after the battery pack of the high-voltage system of the electric vehicle is fully charged if the electric vehicle is charged through the self-charging interface when the high-voltage system of the electric vehicle is connected.
3. The portable battery pack according to claim 2, wherein the portable battery pack comprises a control module and a battery module, the control module is configured to adjust the output power of the bi-directional dc voltage converter according to the state of the electric vehicle, so that the battery module supplies power to the high-voltage system of the electric vehicle when the electric vehicle is in normal operation or is not charged through the self-charging interface, and so that the battery module charges the electric vehicle after the battery pack of the high-voltage system of the electric vehicle is fully charged when the electric vehicle is charged through the self-charging interface.
4. The portable battery pack of claim 3, wherein the control module adjusting the output power of the bi-directional DC voltage converter based on the status of the electric vehicle comprises:
if the electric automobile runs normally or is not charged through the self-charging interface, controlling the bidirectional direct-current voltage converter to output power to the electric automobile high-voltage system so that the battery module supplies power to the electric automobile high-voltage system;
and if the electric automobile is charged through the self-charging interface, controlling the bidirectional direct-current voltage converter not to output power to the battery module until the electric quantity of a battery pack of the high-voltage system of the electric automobile is full.
5. The portable battery pack of claim 4, wherein the control module adjusting the output power of the bi-directional DC voltage converter based on the status of the electric vehicle further comprises:
when the portable battery pack supplies power to the electric automobile high-voltage system until the electric quantity is lower than a preset electric quantity value, the bidirectional direct-current converter is controlled to stop outputting power to the electric automobile high-voltage system, and therefore the battery module stops supplying power.
6. The portable battery pack of claim 4, wherein the control module adjusting the output power of the bi-directional DC voltage converter based on the status of the electric vehicle further comprises:
and after the electric quantity of a battery pack of the high-voltage system of the electric automobile is fully charged, controlling the bidirectional direct-current voltage converter to output power to the battery module at a preset power value so as to charge the battery module.
7. The portable battery pack of claim 3, wherein the battery pack has a charge-discharge interface and a communication interface, the battery module is electrically connected to the bi-directional DC voltage converter through the charge-discharge interface, and the control module is communicatively connected to the bi-directional DC voltage converter through the communication interface.
8. The portable battery pack of claim 1, wherein the portable battery pack has a capacity of not less than 500Wh and not more than 5 KWh.
9. The portable battery pack of claim 1, wherein the voltage of the portable battery pack when fully charged does not exceed 60V.
10. An electric vehicle power replenishment system, comprising: the portable battery pack of any one of claims 1-9 and a bi-directional dc voltage converter, wherein the bi-directional dc voltage converter detachably connects the portable battery pack to an electric vehicle high voltage system.
11. The electric vehicle power charging system of claim 10, further comprising: the charger is used for connecting the portable battery pack into a power supply to charge the portable battery pack.
12. The electric vehicle charging system of claim 10, wherein the charger is an ac-to-dc charger for connecting the portable battery pack to a 220V ac power source for charging the portable battery pack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110246726.3A CN113002328A (en) | 2021-03-05 | 2021-03-05 | Portable battery pack and electric vehicle power supplementing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110246726.3A CN113002328A (en) | 2021-03-05 | 2021-03-05 | Portable battery pack and electric vehicle power supplementing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114030374A (en) * | 2021-11-29 | 2022-02-11 | 深圳易马达科技有限公司 | Portable battery replacement method and system for bidirectional charging and discharging |
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