Power management device and management method for charging storage battery of electric logistics vehicle

A power management device and battery management technology, applied in battery/fuel cell control devices, electric vehicles, electrical devices, etc., can solve the problems of power feeding and inconvenience of pure electric vehicles, and achieve the goal of reducing power loss and avoiding power feeding Effect

Pending Publication Date: 2021-11-05
上海伊控动力系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a pure electric vehicle, we will find that after a period of time without charging or long-term storage, the 12V battery will feed power. After the 12V batte

Method used

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  • Power management device and management method for charging storage battery of electric logistics vehicle
  • Power management device and management method for charging storage battery of electric logistics vehicle
  • Power management device and management method for charging storage battery of electric logistics vehicle

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0041] Example 1

[0042] A power management device for supplementing power to the storage battery of an electric logistics vehicle, such as figure 1 and image 3 As shown, the power management device includes a battery pack 1, a key switch 2, a motor controller 3, a body controller 4, an instrument controller 5, a vehicle wake-up relay 6, a power supply relay 7, a vehicle controller 8, and a high-voltage to low-voltage switch. A controller 9 and a battery management controller 10;

[0043] One end of the key switch 2 is electrically connected to the battery pack 1, and the other end of the key switch 2 is provided with an Off end, an On end and a Start end; the On end is respectively connected to the motor controller 3, the vehicle body controller 4, the The instrument controller 5 and the signal input terminal of the vehicle wake-up relay 6 are electrically connected, the signal output terminal of the vehicle wake-up relay 6 is grounded, the strong current input terminal o...

Example Embodiment

[0048] Example 2

[0049] A power management method of a power management device for supplementing power to batteries of electric logistics vehicles, such as figure 2 and Figure 4 shown, including the following steps:

[0050] Include the following steps:

[0051] S1. When the driver operates the key switch from the OFF end to the non-Off end, and the first wake-up signal line is pulled high, the second wake-up signal line is pulled high, and the third wake-up signal line is pulled high, the signal line is started When the level is pulled high, the electric logistics vehicle is in the starting driving state, and enters the power management mode under the starting driving state;

[0052] S2. When the driver operates the key switch from the non-off end to the off end, and the first wake-up signal line is pulled low, the second wake-up signal line is pulled low, and the third wake-up signal line is pulled low, the signal line is started Pull down the level, the electric log...

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Abstract

The invention discloses a power management device for charging a storage battery of an electric logistics vehicle, the device comprises a battery pack, a key switch, a motor controller, a vehicle body controller, an instrument controller, a whole vehicle wake-up relay, a charging relay, a whole vehicle controller, a high-voltage-to-low-voltage controller and a battery management controller. The above modules are used in cooperation to execute starting, charging and dormancy work of the electric logistics vehicle. The invention further provides a power management method of the power management device for charging the storage battery of the electric logistics vehicle. In the Off state of the whole vehicle, whether the battery pack is fed or not is monitored through interval self-awakening, the feeding condition can be detected in time, in addition, a whole vehicle awakening relay is additionally arranged between the whole vehicle awakening line and the controller related to electricity supplementing, the electricity supplementing function and the electricity supplementing operation are completed in a matched mode, electricity loss is reduced, electricity feeding is avoided, and the vehicle can be started without external equipment.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a power management device and a management method for supplementing batteries of electric logistics vehicles. Background technique [0002] For new energy vehicles, in addition to the power battery, there is also a 12V battery, commonly known as a small battery. For electric vehicles, the 12V battery supplies power to some low-voltage electrical components of the vehicle, and even needs to provide starting energy for the vehicle during the starting process. When using a pure electric vehicle, we will find that after a period of time without charging or long-term storage, the 12V battery will feed power. After the 12V battery is fed, the vehicle cannot be started, and the vehicle needs external equipment to start the vehicle. Bring great inconvenience to the use of pure electric vehicle. Contents of the invention [0003] Aiming at the problems existing in th...

Claims

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Application Information

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IPC IPC(8): B60L58/10B60L1/00B60L3/00
CPCB60L58/10B60L1/00B60L3/0046Y02T10/70
Inventor 张吉军程亚楠
Owner 上海伊控动力系统有限公司
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