Liquid-cooling adjusting device and method of automobile power battery

A technology for automotive power batteries and regulating devices, which is applied in the direction of secondary batteries, battery temperature control, circuits, etc., can solve the problems that the temperature consistency of battery cells cannot be guaranteed, and the cooling effect of each battery is inconsistent, so as to achieve flow balance and temperature control. Stable and consistent effect

Pending Publication Date: 2019-07-16
HOZON NEW ENERGY AUTOMOBILE CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to structural design problems, the existing liquid cooling system has inconsistent cooling effects on each battery, and cannot guarantee the consistency of the temperature of each battery cell

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
  • Liquid-cooling adjusting device and method of automobile power battery
  • Liquid-cooling adjusting device and method of automobile power battery
  • Liquid-cooling adjusting device and method of automobile power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The discharge capacity curve and charge curve of a battery at different temperatures are shown in Table 1:

[0026] Table 1. The discharge capacity curve and charge curve of a battery at different temperatures

[0027]

[0028] From the table above, it can be obtained that the discharge and charge capabilities of the cells at different temperatures are different, so it is very important to ensure the consistency of the cell temperature during series use.

[0029] The traditional power battery water cooling system usually adopts a parallel connection, and the outlet pipe is connected to the battery cell through the connecting pipe, and the water inlet pipe is connected to the battery cell through the connecting pipe, but the inner diameter of the connecting pipe is the same. The disadvantage of this design is the flow distribution uneven.

[0030] Such as Figure 1-2 As shown, a liquid cooling adjustment device for an automobile power battery includes a plurality of...

Embodiment 2

[0050] Based on embodiment 1, the difference from embodiment 1 is:

[0051] The inner diameters of the water inlet regulating valve 4 and the water outlet regulating valve 5 connected to the same battery cell 1 are the same. The water inlet regulating valve 4 and the water outlet regulating valve 5 connected to the same battery cell 1 are mirror-symmetrically arranged with respect to the center line of the battery cell 1 .

[0052] Such a design further ensures that the flow rate of the cooling fluid on the same battery cell 1 is consistent.

[0053] The water inlet regulating valve 4 is connected to the liquid cooling water inlet pipe 2 through a connecting device 6 , and the water outlet regulating valve 5 is connected to the liquid cooling water inlet pipe 2 through a connecting device 6 .

[0054] The connection device 6 includes a T-shaped end connector 61 for connecting the liquid-cooled outlet pipe 3 or the end portion of the outlet regulating valve 5 and a T-shaped en...

Embodiment 3

[0056] A liquid cooling adjustment method for an automotive power battery, comprising:

[0057] The coolant is cooled from the liquid-cooled water inlet pipe 2 through the water inlet regulating valve 4 to cool down a plurality of side-by-side battery cells 1, and then the coolant is discharged from the liquid-cooled water outlet pipe 3 through the water outlet regulating valve 5;

[0058] Wherein, the closer the water inlet regulating valve 4 is to the water inlet 100 in the water inlet direction, the larger its inner diameter; the closer the water outlet regulating valve 5 is to the water outlet 200 in the water outlet direction, the larger its inner diameter.

[0059] The inner diameter lengths of the water inlet regulating valve 4 and the water outlet regulating valve 5 are calculated according to pipeline resistance loss, fluid impedance and flow rate.

[0060] In this embodiment, the water inlet pipe 2, the water outlet pipe 3 are connected to the battery cell 1 at four ...

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 relates to the field of automobile cooling adjustment, in particular to a liquid-cooling adjusting device of an automobile power battery. The liquid-cooling adjusting device of the automobile power battery comprises a plurality of single batteries connected in parallel, a liquid-cooling water inlet pipe and a liquid-cooling water outlet pipe, wherein the liquid-cooling water inlet pipe is connected with one end of the single battery; the liquid-cooling water outlet pipe is connected with the other end of the single battery; the liquid-cooling water inlet pipe is connected with the single battery through a water inlet adjusting valve; the liquid-cooling water outlet pipe is connected with the single battery through a water outlet adjusting valve; the closer to a water inlet the water inlet adjusting valve is in a water inlet direction, the larger the inner diameter of the water inlet adjusting valve is; and the closer to a water outlet the water outlet adjusting valve is in a water outlet direction, the larger the inner diameter of the water outlet adjusting valve is. The consistency of the cell temperatures of the single batteries is ensured; cells are further protected; and the service lives of the single batteries are prolonged.

Description

technical field [0001] The invention relates to the field of automobile cooling adjustment, in particular to a liquid cooling adjustment device and method for an automobile power battery. Background technique [0002] The operating temperature range of ternary series lithium batteries for passenger cars is usually 15°C~45°C. With the continuous improvement of users' demand for vehicle power and the continuous improvement of power battery discharge performance, the temperature rise of the battery and the temperature of each battery cell The need for body temperature consistency emerges. First, let's look at the discharge capacity curve and charge curve of a battery at different temperatures. The discharge and charge capabilities of batteries at different temperatures are different, so it is very important to ensure the consistency of the battery temperature during use. [0003] Due to structural design problems, the existing liquid cooling system has inconsistent cooling ef...

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): H01M10/613H01M10/617H01M10/63H01M10/625H01M10/6556H01M10/6568
CPCH01M10/613H01M10/617H01M10/625H01M10/63H01M10/6556H01M10/6568Y02E60/10
Inventor 王立冬王勒言邓晓光吉国煌彭庆丰戴大力
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap