Dual-source battery pack, management method and system, and electric vehicle

A technology of electric vehicles and battery packs, applied in electric vehicles, power management, electric traction, etc., can solve the problem of high cost of battery packs, achieve the effects of enhancing safety redundancy, eliminating mileage anxiety, and reducing overall costs

Active Publication Date: 2018-06-08
AIWAYS AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a dual-source battery pack, a management method and system, and an electric vehicle to solve the problem of high cost of battery packs for electric vehicles in the prior art

Method used

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  • Dual-source battery pack, management method and system, and electric vehicle
  • Dual-source battery pack, management method and system, and electric vehicle
  • Dual-source battery pack, management method and system, and electric vehicle

Examples

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Embodiment 1

[0063] This embodiment discloses a dual-source battery pack applied to an electric vehicle, such as figure 1 As shown, it includes: a main battery pack compartment 140 and an auxiliary battery pack compartment 240 . The main battery pack compartment 140 includes: the main battery pack 110 , the first switch unit 120 , the common switch unit 310 and the control unit 400 . The auxiliary battery pack compartment 240 includes: an auxiliary battery pack 210 and a DC / DC converter 220 . in,

[0064] The main battery pack compartment 140 is the main source of electric energy for the electric vehicle, which is fixedly installed on the electric vehicle and cannot be changed and replaced; the auxiliary battery pack compartment 240 is the auxiliary source of electric energy for the electric vehicle, which is detachably installed in the electric vehicle. and connected to the main battery pack compartment 140 . Preferably, the replacement between the auxiliary battery pack compartment 24...

Embodiment 2

[0095] This embodiment discloses a dual-source battery pack applied to an electric vehicle, such as image 3 As shown, it includes: a main battery pack compartment 140 and an auxiliary battery pack compartment 240 . The main battery pack compartment 140 includes: the main battery pack 110 , the first switch unit 120 , the common switch unit 310 , the control unit 400 and the DC / DC converter 220 . The auxiliary battery pack compartment 240 only includes the auxiliary battery pack 210 .

[0096] The dual-source battery pack disclosed in this embodiment differs from the dual-source battery pack disclosed in Embodiment 1 only in the installation position of the DC / DC converter 220 , which is installed in the main battery pack compartment 140 . Correspondingly, the second detection unit 230 is only used to detect the voltage, current, temperature and insulation resistance of the auxiliary battery pack 210 , while the first detection unit 130 is only used to detect the voltage, cur...

Embodiment 3

[0099] This embodiment discloses a dual-source battery pack applied to an electric vehicle, such as Figure 4 As shown, it includes: a main battery pack compartment 140 and an auxiliary battery pack compartment 240 . The main battery pack compartment 140 includes: the main battery pack 110 , the first switch unit 120 , the common switch unit 310 , the control unit 400 and the DC / DC converter 220 . The auxiliary battery pack compartment 240 includes the auxiliary battery pack 210 and the second switch unit 260 . The second switch unit 260 is connected between the positive terminal of the auxiliary battery pack 210 and the first terminal of the DC / DC converter 220 . Because the DC / DC converter 220 for controlling the auxiliary battery pack 210 and the auxiliary battery pack 210 are not installed in the auxiliary battery pack compartment 240 at the same time, therefore, based on the consideration of safety, a third The two switch units 260 make the auxiliary battery pack compar...

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PUM

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Abstract

The invention provides a dual-source battery pack, a management method and system and an electric vehicle. The dual-source battery pack comprises a main battery pack bin which comprises a main batterypack and a control unit and is fixed in the electric vehicle and an auxiliary battery pack bin which comprises an auxiliary battery pack and is detachably installed in the electric vehicle. The firstend and the second end of the DC / DC converter are connected to the total positive end and the total negative end of the auxiliary battery pack, the third end is connected with the total positive endand the total positive output end of the main battery pack, the fourth end is connected with the total negative end and the total negative output end of the main battery pack, and a charging and discharging path of the main battery pack and the auxiliary battery pack is formed. The control unit realizes charge and discharge control of the auxiliary battery pack by controlling the DC / DC converter.The battery cell standard of the main battery pack and the battery cell standard of the auxiliary battery pack are different. The dual-source battery pack reduces performance requirements of the auxiliary battery pack while guaranteeing the power and economy of the whole vehicle, and saves the cost compared with an original battery set by 10-30%.

Description

technical field [0001] The invention relates to the field of power batteries for electric vehicles, in particular to a dual-source battery pack with a range extension function, a management method and system, and an electric vehicle. Background technique [0002] Electric vehicle EV (Electric Vehicle) is currently developing rapidly around the world. Affected by traditional driving habits, the requirement for long driving range of electric vehicle EVs has gradually become the mainstream trend. For example, the long driving range version of Tesla Model-S has the highest driving range. The pure electric driving range is nearly 500 kilometers, and Volkswagen also announced that it will launch an electric vehicle EV of more than 400 kilometers in the future. [0003] In order to meet the requirements of long driving range, the power battery system (Battery Pack) configured in electric vehicles needs a larger capacity, generally more than 50kWh. The cost of the battery system an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18
CPCY02T10/70Y02T10/72
Inventor 谷峰
Owner AIWAYS AUTOMOBILE CO LTD
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