CN211743348U - Battery module of power battery system - Google Patents
Battery module of power battery system Download PDFInfo
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- CN211743348U CN211743348U CN202020389127.8U CN202020389127U CN211743348U CN 211743348 U CN211743348 U CN 211743348U CN 202020389127 U CN202020389127 U CN 202020389127U CN 211743348 U CN211743348 U CN 211743348U
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- battery
- battery module
- heating element
- connection part
- power battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a power battery system's battery module, including shell, battery pack and heating element, be equipped with the installation cavity on the shell, battery pack with heating element all locates in the installation cavity, just heating element one side is pasted and is leaned on battery pack, heating element does battery pack heats. The utility model discloses a set up heating element and for electric core subassembly heating, avoid electric core subassembly to charge below the zero degree, prevent to analyse lithium, improve the life-span and the safety of battery module.
Description
Technical Field
The utility model discloses a power battery system's battery module belongs to the power battery field.
Background
With the gradual maturity of the power battery manufacturing technology, the electric automobile has the competitive strength with the traditional fuel automobile. Electric passenger cars, electric logistics vehicles, electric bus vehicles and electric low-speed vehicles are increasingly present in cities, rural areas and daily lives of everyone.
In the conventional power battery system in the market, a battery module is formed by connecting a plurality of lithium batteries in series/parallel, but lithium can be separated when the lithium batteries are charged below zero due to the characteristics of the lithium batteries, so that the service life and the safety of the battery module are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power battery system's battery module can heat the cell subassembly, avoids the cell subassembly to charge below the zero degree, prevents to separate out lithium, improves the life-span and the safety of battery module.
The utility model relates to a power battery system's battery module, including shell, battery core subassembly and heating element, be equipped with the installation cavity on the shell, the battery core subassembly with heating element all locates in the installation cavity, just heating element one side is pasted and is leaned on the battery core subassembly, heating element does the heating of battery core subassembly.
Further, the heating assembly comprises a resistance heating sheet.
Further, the resistance heating sheet is arranged at the bottom of the installation cavity, and the electric core assembly is arranged on the upper side of the resistance heating sheet.
Furthermore, one end of the resistance heating sheet is provided with an electric connection part, an opening is formed in the position, corresponding to the electric connection part, of the shell, and the electric connection part extends out of the shell from the opening.
Furthermore, the width of the electric connection part is smaller than that of the resistance heating sheet, a limiting step is arranged at the joint of the electric connection part and the resistance heating sheet, and the limiting step is clamped on the inner side of the opening.
Furthermore, the opening is a trapezoidal groove, and the trapezoidal groove is formed in the bottom of one side of the shell.
Further, the temperature control switch is attached to the side wall of the cell assembly and used for monitoring the highest temperature of the cell assembly.
Further, a heat-conducting adhesive layer is arranged between the temperature control switch and the electric core assembly and used for fixing the temperature control switch to the electric core assembly side wall.
Further, the battery pack assembly comprises a plurality of lithium batteries connected in series or in parallel.
The utility model has the advantages as follows:
the utility model discloses a set up heating element and for electric core subassembly heating, avoid electric core subassembly to charge below the zero degree, prevent to analyse lithium, improve the life-span and the safety of battery module.
Drawings
Fig. 1 is a perspective view of a battery module according to the present invention;
FIG. 2 is a diagram of the position relationship between the housing and the resistive heating sheet of the present invention;
fig. 3 is a perspective view of the resistance heating sheet of the present invention;
FIG. 4 is a diagram showing the installation relationship between the resistance heating sheet and the opening of the present invention;
fig. 5 is an exploded view of the resistance heating sheet and the two side walls of the housing.
Names and designations of parts
1: a housing;
2: an electrical core assembly;
3: a resistance heating sheet;
11: a mounting cavity;
12: an opening;
31: an electric connection part;
32: and a limiting step.
Detailed description of the preferred embodiments
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Examples
Referring to fig. 1-5, an embodiment of the present invention discloses a battery module of a power battery system, including a housing 1, a battery cell assembly 2 and a heating assembly, wherein the housing 1 is provided with an installation cavity 11, the battery cell assembly 2 and the heating assembly are all disposed in the installation cavity 11, one side of the heating assembly is attached to the battery cell assembly 2, and the heating assembly is used for heating the battery cell assembly 2.
The electric core assembly 2 comprises a plurality of lithium batteries which are connected in series or in parallel. Because lithium cell characteristic, it can be educed lithium when charging below the zero degree, consequently sets up above-mentioned heating element, when the temperature of electric core subassembly 2 below the zero degree and need be for it charges, be earlier through heating element for electric core subassembly 2 heats, makes electric core subassembly 2's temperature reach more than the zero degree after, charges again. In this embodiment, the lithium battery is a square lithium battery, and the square lithium batteries are attached to each other in parallel and in a straight line, so as to form a rectangular battery cell assembly 2.
Heating element one side is pasted the setting of electricity core subassembly 2, can directly transmit for the heating of electricity core subassembly 2 heating use for the heat that makes heating element, reduces losing of heat among the heat transfer process. In one embodiment, the heating assembly adopts a resistance heating sheet 3, the resistance heating sheet 3 is designed in a sheet shape and can be designed to have a length and width dimension equal to that of the side surface of the electric core assembly 2, and the resistance heating sheet 3 is attached to one side of the electric core assembly 2 and completely covers the side surface. The resistance of resistance heating piece 3 is unanimous generates heat evenly everywhere, then transmits the heat evenly unanimously to each position of electric core subassembly 2, makes electric core subassembly 2 be heated more evenly.
In this embodiment, resistance heating sheet 3 is located installation cavity 11 bottom, electric core subassembly 2 is located resistance heating sheet 3 upside. Through heating sheet 3 with resistance setting in 11 bottoms of installation cavity of electric core subassembly 2 downside, usable electric core subassembly 2 is to the pressure effect that resistance heating sheet 3 fixed resistance heating sheet 3, need not to set up in addition and carries out fixed knot structure to resistance heating sheet 3, makes installation cavity 11 inner structure simple.
Furthermore, one end of the resistance heating sheet 3 is provided with an electric connection part 31, an opening 12 is arranged at a position of the housing 1 corresponding to the electric connection part 31, and the electric connection part 31 extends out of the housing 1 from the opening 12. The electricity connection part 31 is used for connecting the resistance heating sheet 3 into a power supply circuit to provide electric energy for the resistance heating sheet 3, in order to improve the safety of electricity connection and facilitate operation, the electricity connection part 31 extends out of the shell 1, and the opening 12 is used for extending the electricity connection part 31 out of the shell 1.
In addition, in order to further increase the fixing effect of the resistance heating sheet 3 in the installation cavity 11, the width of the electric connection part 31 is smaller than that of the resistance heating sheet 3, a limit step 32 is arranged at the joint of the electric connection part 31 and the resistance heating sheet 3, and the limit step 32 is clamped inside the opening 12. Spacing step 32 card is located opening 12 is inboard, prevents that resistance heating element 3 from following the outer removal of opening 12 direction shell 1 to increase the fixity of resistance heating element 3 in installation cavity 11.
The opening 12 is a trapezoidal groove, and the trapezoidal groove is arranged at the bottom of one side of the shell 1. The opening 12 is designed to be a trapezoidal groove, so that the operation that the electric connection part 31 needs to pass through the opening 12 when being installed only needs to be carried out by putting the electric connection part into the trapezoidal groove from a gap of the trapezoidal groove, and the installation operation of the electric connection part 31 is simplified.
The temperature control switch is attached to the side wall of the electric core assembly 2 and used for monitoring the highest temperature of the electric core assembly 2. When the power battery system works, the temperature control switch monitors the real-time temperature of the battery pack assembly 2, and when the temperature of the battery pack assembly 2 reaches or exceeds the set maximum temperature, the power battery system performs corresponding control according to the monitoring feedback result of the temperature control switch. For example, the maximum temperature is set to be 60 degrees, and when the temperature control switch monitors that the temperature of the battery pack assembly 2 reaches 60 degrees, the power battery system automatically disconnects the control circuit and the relay to protect the battery module.
Furthermore, in order to facilitate the installation and fixation of the temperature controlled switch, the thermal conductivity between the electric core assembly 2 and the temperature controlled switch is improved, and the measurement precision of the temperature controlled switch is ensured. Temperature detect switch with be equipped with heat-conducting adhesive layer between the electricity core subassembly 2, heat-conducting adhesive layer is used for fixing temperature detect switch arrives 2 lateral walls of electricity core subassembly. The formation of heat conduction glue film only needs to beat colloidal heat conduction glue in one side of temperature detect switch, then presses the one side that is equipped with the heat conduction glue on temperature detect switch against 2 lateral walls of electric core subassembly, treats that colloidal heat conduction glue forms promptly after solidifying the heat conduction glue film to temperature detect switch fixed mounting is at 2 lateral walls of electric core subassembly. Moreover, the heat-conducting glue has good thermal conductivity and good heat-conducting effect, and can ensure the measurement precision of the temperature control switch.
To sum up, the utility model discloses a set up heating element and heat for electric core subassembly 2, avoid electric core subassembly 2 to charge below the zero degree, prevent to analyse lithium, improve the life-span and the safety of battery module.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a power battery system's battery module, its characterized in that, includes shell, battery core subassembly and heating element, be equipped with the installation cavity on the shell, the battery core subassembly with heating element all locates in the installation cavity, just paste on one side of the heating element and lean on the battery core subassembly, heating element does the heating of battery core subassembly.
2. The battery module of power battery system of claim 1, wherein the heating assembly comprises a resistive heat patch.
3. The battery module of a power battery system of claim 2, wherein the resistive heating sheet is disposed at the bottom of the mounting cavity, and the battery module is disposed on the upper side of the resistive heating sheet.
4. The battery module of a power battery system of claim 3, wherein one end of the resistive heating element is provided with an electrical connection part, the housing is provided with an opening corresponding to the electrical connection part, and the electrical connection part extends out of the housing from the opening.
5. The power battery system battery module of claim 4, wherein the width of the electrical connection part is smaller than the width of the resistance heating sheet, a limiting step is arranged at the joint of the electrical connection part and the resistance heating sheet, and the limiting step is clamped inside the opening.
6. The battery module of a power battery system of claim 4, wherein the opening is provided as a trapezoidal groove provided at the bottom of one side of the housing.
7. The battery module of power battery system of claim 1, further comprising a temperature-controlled switch disposed adjacent to a side wall of the cell assembly, the temperature-controlled switch being configured to monitor a maximum temperature of the cell assembly.
8. The battery module of power battery system of claim 7, wherein a thermal adhesive layer is disposed between the thermal switch and the battery cell assembly, and the thermal adhesive layer is used to fix the thermal switch to the side wall of the battery cell assembly.
9. The battery module of a power battery system of claim 1, wherein the battery pack comprises a plurality of lithium batteries connected in series or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020389127.8U CN211743348U (en) | 2020-03-24 | 2020-03-24 | Battery module of power battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020389127.8U CN211743348U (en) | 2020-03-24 | 2020-03-24 | Battery module of power battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211743348U true CN211743348U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020389127.8U Active CN211743348U (en) | 2020-03-24 | 2020-03-24 | Battery module of power battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211743348U (en) |
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2020
- 2020-03-24 CN CN202020389127.8U patent/CN211743348U/en active Active
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