CN214505608U

CN214505608U - Battery heating element

Info

Publication number: CN214505608U
Application number: CN202120674896.7U
Authority: CN
Inventors: 凌万秾
Original assignee: Jiangmen Yuanxi Technology Co ltd
Current assignee: Jiangmen Yuanxi Technology Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-10-26
Anticipated expiration: 2031-04-01

Abstract

The utility model discloses a battery heating element, which comprises a heating body and two heating lugs, wherein the heating body is provided with two wiring ends; two heating utmost point ears respectively with two wiring end electric connection, two heating utmost point ears all extend to the outside of heating body, two heating utmost point ears all are provided with the packaging part. The utility model discloses can encapsulate inside the battery, packaging structure is simple, the production of being convenient for.

Description

Battery heating element

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery heating element is related to.

Background

The charging and discharging performance of the power battery in a low-temperature environment is poor, the power battery generally needs to be heated, the heating film is wound on the outer side of the conventional power battery generally to heat the power battery, however, the heating efficiency of the heating mode is low, the heating temperature is not uniform, the packaging between the heating film and the power battery is difficult, and the production is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery heating element can encapsulate inside the battery, and packaging structure is simple, the production of being convenient for.

According to the utility model discloses battery heating element, include: a heating body having two terminals; and the wiring end is electrically connected with two heating lugs, two the heating lugs extend to the outer side of the heating body, and the heating lugs are provided with packaging parts.

The technical scheme at least has the following beneficial effects: two heating lugs are led out from the heating body, and the packaging piece is arranged on the heating lugs, so that the heating body can be arranged inside the battery, the heating lugs are arranged at the sealing position of the battery shell through the packaging piece, the heating lugs can be led out to the outside of the battery, the packaging structure is simple, assembly and production are facilitated, and the production efficiency is improved.

According to some embodiments of the present invention, the packaging member is configured as an annular structure, and the packaging member is sleeved on the outside of the heating tab.

According to some embodiments of the utility model, the packaging part sets up to utmost point ear glue, utmost point ear glue connect in heating utmost point ear.

According to some embodiments of the utility model, the heating body includes first insulation layer, second insulating layer and the layer that generates heat, the layer clamp that generates heat is located the first insulation layer with between the second insulating layer, the layer that generates heat with two the wiring end is connected.

According to some embodiments of the utility model, the heating layer sets up to the heater, the heater is the column structure that encircles, the both ends of heater respectively with two the wiring end is connected.

According to some embodiments of the utility model, the layer that generates heat sets up to graphite alkene piece that generates heat.

According to some embodiments of the utility model, the layer that generates heat sets up to positive temperature coefficient resistance heat-generating body.

According to some embodiments of the invention, the first insulating layer and the second insulating layer are both provided as flexible films.

According to some embodiments of the invention, the heating tab and the wiring end are welded connections.

According to some embodiments of the present invention, the heating tab and the welding point of the wiring end are provided with an insulating member.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a heating element according to an embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a heating element in an embodiment of the invention;

fig. 3 is the embodiment of the utility model provides an embodiment of laminate polymer battery's schematic structure diagram.

Reference numerals:

a heating body 100, a first insulating layer 110, a second insulating layer 120, a heat generating layer 130, a terminal 140, an insulating member 150;

heating the tab 200, packaging 210;

the soft package battery 300, a seal 310, a positive electrode tab 320 and a negative electrode tab 330.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 3, embodiments of the present invention provide a battery heating element including a heating body 100 and two heating tabs 200.

In some embodiments, the heating body 100 is configured as a rectangular structure, which matches the shape of the battery, but may also be configured as other shapes, and one end of the heating body 100 is provided with two terminals 140 at intervals, which are respectively a current input end and a current output end of the heating body 100, for connecting with an external power supply to achieve a heating function; the two wiring terminals 140 are connected with the heating tabs 200, the heating tabs 200 are electrically connected with the wiring terminals 140, the heating tabs 200 are connected with the wiring terminals 140 in a welding manner, and the welding connection is stable and reliable, of course, the heating tabs 200 and the heating body 100 can be integrated into a whole, that is, the heating tabs 200 are directly led out from the heating body 100, or the heating tabs 200 are directly surrounded and packaged by viscose glue and connected with the wiring terminals 140, so that the welding step can be omitted, and the production efficiency is improved; the two heating tabs 200 extend towards the upper end of the heating body 100, the two heating tabs 200 are both provided with the packaging part 210, the packaging part 210 is arranged in the middle of the heating tabs 200, and the packaging part 210 has sealing and insulating functions, so that the packaging part 210 can be fixed at the opening of the battery, that is, the heating body 100 can be installed inside the battery, particularly inside the soft package battery 300.

Generally speaking, the pouch cell 300 is provided with a seal 310, a positive tab 320 and a negative tab 330 are led out from the seal 310, when in installation, the heating body 100 is inserted into the cell, the heating tab 200 faces one side of the seal 310, the heating tab 200 is led out from the seal 310 of the pouch cell 300 to the outside of the cell, that is, the heating tab 200 is located at the same end as the positive tab 320 and the negative tab 300, and meanwhile, the packaging part 210 is fixed at the seal 310 of the pouch cell 300, the packaging part 210 can fix the heating tab 200 at the seal 310 of the pouch cell 300 on one hand, and can insulate the heating tab 200 from the pouch cell 300 on the other hand, and can seal the seal 310 of the pouch cell 300, and connect the heating tab 200 to an external power supply to directly heat the inside of the pouch cell 300, so that the heating temperature distribution is uniform, the heating efficiency is high, and the problem of poor charging and discharging performance under a low temperature environment can be effectively dealt with, and the packaging structure is simple, the assembly and the production are convenient, and the production efficiency is improved.

Referring to fig. 1, in some embodiments, the packaging member 210 is configured to be an annular structure, the packaging member 210 is directly sleeved outside the heating tab 200, the assembly is convenient, and when the heating tab 200 is packaged at the seal 310 of the pouch battery 300, the heating tab 200 and the pouch battery 300 are insulated along the circumferential direction of the packaging member 210, so that the insulation effect is good, and electric leakage is avoided.

In some embodiments, the package member 210 is made of tab glue, the tab glue is made of polypropylene, polyethylene or other hot melt adhesives, and the tab glue is directly bonded to the heating tab 200, so that the assembly is convenient, the production efficiency is improved, the sealing performance and the insulating performance of the tab glue are good, the sealing performance of the package and the insulating performance between the heating tab 200 and the battery are effectively improved, and it can be understood that the material of the tab glue is not limited to the above description as long as the sealing and the insulating can be achieved.

Referring to fig. 2, in some embodiments, the heating body 100 includes a first insulating layer 110, a second insulating layer 120, and a heat generating layer 130, the heat generating layer 130 is sandwiched between the first insulating layer 110 and the second insulating layer 120, an edge of the first insulating layer 110 is hermetically connected to an edge of the second insulating layer 120, and the heat generating layer 130 is electrically connected to two terminals 140, so that power can be supplied to the heat generating layer 130 to heat the battery, thereby improving the charging and discharging performance of the battery in a low temperature environment.

Referring to fig. 1, in some embodiments, the heat generating layer 130 is configured as a heat generating wire, the heat generating wire is disposed between the first insulating layer 110 and the second insulating layer 120 in a surrounding structure, and forms a plurality of heat generating rings, and two ends of the heat generating wire are respectively connected by two terminals 140, so that the heat generating wire can uniformly heat the battery, and further improve the charging and discharging performance of the battery in a low temperature environment.

In some embodiments, the heating layer 130 is configured as a graphene heating sheet, the graphene heating sheet is electrically connected to the two terminals 140, and the graphene heating sheet has a heat conduction performance, so that the heating rate can be increased, and the constant temperature state can be maintained when the temperature reaches a set temperature, thereby saving electric energy.

In some embodiments, the heating layer 130 is a PTC heating element, which has low thermal resistance, high heat exchange efficiency, automatic constant temperature function, and electric energy saving. Of course, it is understood that the structural form of the heat generating layer 130 is not limited to the above description, and may be other structural forms.

In some embodiments, the first insulating layer 110 and the second insulating layer 120 are both provided as flexible films, so that the heating body 100 has a small volume, a small occupied space, and a high energy density under the same battery volume, and the heating body 100 with flexibility can be bent into different shapes, can be installed according to different installation spaces, and has good versatility.

Referring to fig. 1, in some embodiments, an insulator 150 is disposed at a welding position of a heating tab 200 and a terminal 140, the insulator 150 completely covers the welding position, and the insulator 150 is made of polypropylene, polyethylene or other hot melt adhesive, so that the welding position can be insulated, electric leakage can be prevented, and the heating tab 200 can be connected more stably and reliably to some extent.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A battery heating element, comprising:

a heating body having two terminals;

and the wiring end is electrically connected with two heating lugs, two the heating lugs extend to the outer side of the heating body, and the heating lugs are provided with packaging parts.

2. A battery heating element as claimed in claim 1, wherein: the packaging part is of an annular structure, and the packaging part is sleeved on the outer side of the heating pole lug.

3. A battery heating element as claimed in claim 1, wherein: the packaging part is made of tab glue, and the tab glue is adhered to the heating tab.

4. A battery heating element as claimed in claim 1, wherein: the heating body comprises a first insulating layer, a second insulating layer and a heating layer, the heating layer is clamped between the first insulating layer and the second insulating layer, and the heating layer is connected with the two wiring terminals.

5. A battery heating element as claimed in claim 4, wherein: the heating layer is set as a heating wire, the heating wire is of a surrounding structure, and two ends of the heating wire are connected with the two wiring ends respectively.

6. A battery heating element as claimed in claim 4, wherein: the heating layer is arranged as a graphene heating sheet.

7. A battery heating element as claimed in claim 4, wherein: the heating layer is set as a positive temperature coefficient resistance heating body.

8. A battery heating element as claimed in claim 4, wherein: the first insulating layer and the second insulating layer are both provided as flexible films.

9. A battery heating element as claimed in claim 1, wherein: the heating tab is connected with the wiring end in a welding mode.

10. A battery heating element as claimed in claim 9, wherein: and an insulating part is arranged at the welding position of the heating tab and the wiring end.