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
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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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