Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power battery system, electric vehicle and design method

A technology of power battery and design method, which is applied in the direction of secondary battery, battery pack components, secondary battery repair/maintenance, etc., and can solve the problems of easy damage of battery cells, time-consuming and labor-intensive, affecting the weight and cost of the whole vehicle, etc.

Pending Publication Date: 2022-07-15
CHINA FIRST AUTOMOBILE
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional new energy power battery assembly, DC / DC, and charger are arranged in a dispersed manner, and the electrical connection between each component is realized through a high-voltage wire harness, which causes power loss and affects the weight and cost of the vehicle
[0003] In the traditional power battery solution, the high-voltage power distribution unit and battery controller are built into the battery pack, which are more fragile than the battery cells. When non-energy storage components such as the high-voltage power unit and battery controller fail, the whole package needs to be disassembled for inspection and maintenance. Maintenance, time-consuming and labor-intensive, poor maintainability
[0004] At the same time, there are relatively complex high-voltage electrical connections in the package, resulting in a waste of power battery system layout space

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power battery system, electric vehicle and design method
  • Power battery system, electric vehicle and design method
  • Power battery system, electric vehicle and design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see Image 6 , a power battery system, including an energy management unit 1 and a power battery unit.

[0050] The energy management unit 1 includes a power supply device, a control device and a power distribution device.

[0051] The power battery unit includes an energy storage device, a thermal management device and a sampling device.

[0052] Through the integration of the energy management unit and the power battery unit, the high integration of the high-voltage system is realized, and the weight reduction and cost reduction at the vehicle level are realized.

[0053]The power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides an action signal of the power distribution device, and the power distribution The device action realizes o...

Embodiment 2

[0062] An electric vehicle includes a power battery system, that is, an energy management unit 1 and a power battery unit. The energy management unit 1 includes a power supply device, a control device and a power distribution device. The power battery unit includes an energy storage device, a thermal management device and a sampling device. The power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides an action signal of the power distribution device, and the power distribution The device action realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wire harness to realize signal transmission. The electric vehicle including...

Embodiment 3

[0064] see image 3 , a design method of a power battery system for designing a power battery system, including the following steps:

[0065] Step 1, arranging the battery cell set 4 in the power battery unit;

[0066] see Figure 4 , the specific method of the step one is as follows:

[0067] Place the fuse on the output pole side of the DC bus, and set 1, 2, 3...N of battery cells to meet the following requirements:

[0068] U 1 +……+U N / 2 =U N / 2+1 +……+U N =U O / 2, where N is even and N≥4;

[0069] Among them, N is the number of cell sets; U N is the output terminal voltage of the cell set N; U O is the DC bus output voltage.

[0070] The battery cell set 4 includes a variety of battery cell forms such as square shell cells, soft-packed cells, and cylindrical cells.

[0071] The cell sets are arranged in 4 even-numbered columns, and fuses are connected in series between sets N / 2 and N / 2+1, including excitation fuses, intelligent fuses and other fuses that can inde...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of batteries, and particularly relates to a power battery system, an electric vehicle and a design method. Comprising an energy management unit and a power battery unit. The energy management unit comprises a power supply device, a control device and a power distribution device; the power battery unit comprises an energy storage device, a heat management device and a sampling device; the power distribution device is connected in series between the high-voltage interface of the power battery unit and the direct-current bus interface of the electric fitting device; the power distribution device is connected with the control device through a low-voltage wire harness; the control device provides a power distribution device action signal, and the power distribution device acts to realize on and off; the energy storage device is fixed on the heat management device; according to the invention, through integration of the energy management unit and the power battery unit, high integration of a high-voltage system is realized, and weight reduction and cost reduction of a whole vehicle level are realized.

Description

technical field [0001] The invention belongs to the technical field of batteries, in particular to a power battery system, an electric vehicle and a design method. Background technique [0002] The traditional new energy power battery assembly is distributed with DC / DC and chargers, and the electrical connection between the components is realized through the high-voltage wiring harness, which causes power loss and affects the weight and cost of the vehicle. [0003] In the traditional power battery solution, the high-voltage power distribution unit and the battery controller are built into the battery pack, which are more easily damaged than the battery cell. Maintenance is time-consuming and labor-intensive, and maintainability is poor. [0004] At the same time, there are more complex high-voltage electrical connections in the package, resulting in a waste of the layout space of the power battery system. SUMMARY OF THE INVENTION [0005] The invention provides a power ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/613H01M10/625H01M10/6567H01M50/583
CPCH01M10/613H01M10/625H01M10/6567H01M50/583H01M10/4257H01M2010/4271Y02E60/10
Inventor 乔延涛周琪裴小娟陈永胜赵壮
Owner CHINA FIRST AUTOMOBILE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com