CN217740624U - Thermal coupling low-temperature-resistant lithium ion battery - Google Patents

Abstract

The utility model discloses an anti low temperature lithium ion battery of thermal coupling, including the lithium cell, the outer end of lithium cell is fixed with insulating heat-conducting plate through adhesion adhesive bonding, the outer end of insulating heat-conducting plate bonds and has the semiconductor refrigeration piece, the wiring end and the H bridge circuit subassembly electric connection of semiconductor refrigeration piece, H bridge circuit subassembly downside wiring part is equipped with automatically controlled switch, lithium cell integral erection is inside the battery case, temperature sensor and control mainboard are installed to one side inner wall of battery case, coupling assembling includes power supply terminal female head, power supply terminal female head is connected with the connecting wire of lithium cell, the overhead cooperation of power supply terminal female head has inserted power supply terminal public head, and this device changes the electric heat film for the semiconductor refrigeration piece, under the low temperature situation, can heat the lithium cell, when the high temperature, will change positive negative pole through H bridge circuit subassembly, alright carry out cooling treatment to the lithium cell, guaranteed holistic result of use.

Description

Thermal coupling low-temperature-resistant lithium ion battery

Technical Field

The utility model belongs to the technical field of lithium ion battery, specifically be an anti low temperature lithium ion battery of thermal coupling.

Background

Lithium ion batteries are widely used in various electronic devices because of their advantages such as light weight, high specific energy, and long life. But lithium ion battery itself receives the temperature to influence greatly, under low temperature environment, the viscosity increase of electrolyte, the part solidifies even, lead to lithium ion battery's electric conductivity to descend, thereby lead to holistic performance degradation, and whole back of using under the low temperature state, lithium ion battery's life meeting greatly reduced itself, in order to solve the poor problem of lithium cell low temperature result of use, can set up carbon layer electric heat film on the lithium cell surface, go up the electricity under the low temperature condition, generate heat through carbon layer electric heat film itself and come to carry out heat treatment to lithium cell itself, guarantee the result of use of lithium cell.

However, the thermal coupling low-temperature resistant lithium ion battery is provided for solving the problems that the whole battery is very inconvenient to disassemble, assemble and maintain due to the heating treatment by the method, and the heat dissipation effect of the lithium battery is reduced due to the arranged carbon layer electric heating film when the temperature is too high, so that the whole use safety is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: in order to solve the above-mentioned problems, a thermally coupled low temperature resistant lithium ion battery is provided.

The utility model adopts the technical scheme as follows: the utility model provides an anti low temperature lithium ion battery of thermal coupling, includes the lithium cell, the outer end of lithium cell is fixed with insulating heat-conducting plate through adhesion adhesive bonding, the outer end of insulating heat-conducting plate bonds and has the semiconductor refrigeration piece, the wiring end and the H bridge circuit subassembly electric connection of semiconductor refrigeration piece, H bridge circuit subassembly downside is equipped with electric control switch, the lower extreme of wiring part is connected with the connecting wire of lithium cell through coupling assembling, lithium cell integral mounting is inside the battery case, temperature sensor and control mainboard are installed to one side inner wall of battery case, coupling assembling includes the female head of power supply terminal, the female head of power supply terminal is connected with the connecting wire of lithium cell, the overhead cooperation of power supply terminal has inserted the public head of power supply terminal in the power end.

In a preferred embodiment, the male terminal of the power terminal is connected with the end of the terminal portion, and the insulating and heat-conducting plate is integrally made of a heat-conducting silica gel material.

In a preferred embodiment, the whole adhesion glue is made of an insulating high-temperature-resistant glue, the inner end of the insulating heat-conducting plate is tightly attached to the outer wall of the lithium battery, and the plane size of the insulating heat-conducting plate is three-quarters of the plane size of the lithium battery.

In a preferred embodiment, the outer end of the semiconductor refrigeration piece is tightly attached to the inner wall of the battery box.

In a preferred embodiment, the temperature sensor, the lithium battery, the H-bridge circuit assembly and the electric control switch are electrically connected to the control main board.

In a preferred embodiment, the terminal of the semiconductor refrigeration piece is arranged on the inner side of the adhesive glue.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, carry out real-time supervision through temperature sensor to the inside temperature of battery case, when the high temperature or cross low, heat or refrigeration treatment to the inside heating of battery case through the heating that semiconductor refrigeration piece itself can realize with the refrigeration effect for holistic suitability and security all improve greatly.

2. The utility model discloses in, with the public first separation of power supply terminal female head and power supply terminal, then tear adhesion glue and fixed colloid part, alright directly take out the semiconductor refrigeration piece, conveniently maintain and change the semiconductor refrigeration piece, guaranteed holistic result of use, directly install the heat-conducting plate at semiconductor refrigeration piece and lithium cell simultaneously for heating range is wider, has guaranteed holistic result of use.

Drawings

Fig. 1 is a schematic view of the overall cross-sectional plane structure of the present invention;

fig. 2 is a schematic diagram of a layered structure in a battery box according to the present invention;

fig. 3 is a schematic diagram of the structure of the explosion of the connection assembly of the present invention.

The labels in the figure are: the device comprises a semiconductor refrigerating sheet 1, a lithium battery 2, a battery box 3, a wiring terminal 4, a temperature sensor 5, a control mainboard 6, a connecting assembly 7, a power supply terminal female head 71, a power supply terminal male head 72, a temperature sensor 8, a 9-H bridge circuit assembly, an electric control switch 10 and an insulating heat conducting plate 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-3, a thermal coupling low temperature resistant lithium ion battery, including lithium cell 2, the outer end of lithium cell 2 is fixed with insulating heat-conducting plate 11 through adhesion sticky joint, the outer end of insulating heat-conducting plate 11 bonds and has semiconductor refrigeration piece 1, the wiring end 4 and the H bridge circuit module 9 electric connection of semiconductor refrigeration piece 1, can change the positive negative pole of semiconductor refrigeration piece 1 through H bridge circuit module 9, guarantee that semiconductor refrigeration piece 1 realizes refrigeration or heating operation, can satisfy using under the different situation, the wiring part of H bridge circuit module 9 downside is equipped with electric control switch 10, the lower extreme of wiring part is connected with lithium cell 2's connecting wire 8 through coupling assembling 7, lithium cell 2 is installed inside battery case 3 wholly, the outer end of semiconductor refrigeration piece 1 is hugged closely with the inner wall of battery case 3, temperature sensor 5 and control mainboard 6 are installed to one side inner wall of battery case 3, carry out real-time supervision to the inside temperature of battery case 3 through temperature sensor 5, when the temperature is less than the temperature that sets up, electric control switch 10 opens, make the route, provide the power source for semiconductor refrigeration piece 1 through lithium cell 2, heat treatment, heat the back can accomplish the lithium cell 2 internal insulation heat treatment.

The connecting assembly 7 comprises a power terminal female head 71, the power terminal female head 71 is connected with a connecting wire 8 of the lithium battery 2, a power terminal male head 72 is inserted into the power terminal female head 71 in a matching mode, the power terminal male head 72 is connected with the end of a wiring part, the power terminal female head 71 is separated from the power terminal male head 72, then an adhesion glue and a fixed colloid part are torn open, the semiconductor refrigeration piece 1 can be directly taken out, and the semiconductor refrigeration piece 1 is convenient to maintain and replace.

It should be noted that, the whole insulating heat-conducting plate 11 is made of a heat-conducting silica gel material, and the insulating heat-conducting plate 11 can conduct heat to the lithium battery 2 to complete heating operation when the semiconductor refrigeration piece 1 heats, and can conduct heat out of the semiconductor refrigeration piece 1 to complete heat dissipation operation when the lithium battery 2 is overheated, so that the whole indication effect is ensured.

It should be noted that, the whole high temperature resistant colloid that is of adhesion glue makes, and the inner of insulating heat-conducting plate 11 is hugged closely with lithium cell 2 outer wall, and the plane dimension of insulating heat-conducting plate 11 is three fourths of lithium cell 2 plane dimension, can be with in heat introduction lithium cell 2 through the insulating heat-conducting plate 11 that sets up, can guarantee that the insulating condition of coupling part gets off and accomplish heating and the radiating operation to the battery for whole when using is safer.

It should be noted that, the temperature sensor 5, the lithium battery 2, the H-bridge circuit assembly 9 and the electric control switch 10 are electrically connected to the control main board 6, when the temperature is higher than the set temperature, the positive and negative poles of the semiconductor refrigeration sheet 1 are switched through the H-bridge circuit assembly 9, at this time, the semiconductor refrigeration sheet 1 can be refrigerated when being powered on, so as to ensure the heat dissipation effect of the battery, and the automatic regulation and control operation is realized by the integral work and operation of the control main board 6.

It should be noted that the wiring end 4 of the semiconductor refrigeration piece 1 is arranged on the inner side of the adhesion glue, and the adhesion glue can limit the wiring end 4 when fixing the insulation heat conduction plate 11, so that the whole installation effect is ensured.

The working principle is as follows: when using, carry out real-time supervision through temperature sensor 5 to the inside temperature of battery case 3, when the temperature is less than the temperature of setting, automatically controlled switch 10 opens, make whole formation route, provide power source for semiconductor refrigeration piece 1 through lithium cell 2, carry out the heating through semiconductor refrigeration piece 1, the temperature can be in leading-in lithium cell 2 along insulating heat-conducting plate 11 after the simultaneous heating, accomplish the heat treatment to lithium cell 2, when the temperature is higher than the temperature of setting, change the positive negative pole of semiconductor refrigeration piece 1 through H bridge circuit subassembly 9, semiconductor refrigeration piece 1 when the electricity, alright carry out the refrigeration treatment this moment, guarantee the radiating effect of battery.

When needs maintain and change semiconductor refrigeration piece 1, with the separation of power supply terminal female head 71 and power supply terminal public head 72, then tear adhesion glue and fixed colloid part, alright directly take out semiconductor refrigeration piece 1, conveniently maintain and change semiconductor refrigeration piece 1.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A thermally coupled low temperature resistant lithium ion battery comprising a lithium battery (2), characterized in that: the outer end of lithium cell (2) is fixed with insulating heat-conducting plate (11) through the adhesion sticky connection, the outer end of insulating heat-conducting plate (11) bonds and has semiconductor refrigeration piece (1), wiring end (4) and H bridge circuit module (9) electric connection of semiconductor refrigeration piece (1), the wiring part of H bridge circuit module (9) downside is equipped with electric control switch (10), the lower extreme of wiring part is connected with connecting wire (8) of lithium cell (2) through coupling assembling (7), lithium cell (2) integral erection is inside battery case (3), temperature sensor (5) and control mainboard (6) are installed to one side inner wall of battery case (3), coupling assembling (7) are including the female head of power supply terminal (71), the female head of power supply terminal (71) is connected with connecting wire (8) of lithium cell (2), the cooperation has inserted power supply terminal (72) on the female head of power supply terminal (71).

2. A thermally coupled low temperature resistant lithium ion battery according to claim 1, wherein: the power supply terminal male head (72) is connected with the end part of the wiring part, and the whole insulating heat-conducting plate (11) is made of a heat-conducting silica gel material.

3. A thermally coupled low temperature resistant lithium ion battery according to claim 1, wherein: the whole adhesion glue is made of an insulating high-temperature-resistant glue, the inner end of the insulating heat-conducting plate (11) is tightly attached to the outer wall of the lithium battery (2), and the plane size of the insulating heat-conducting plate (11) is three quarters of the plane size of the lithium battery (2).

4. A thermally coupled low temperature resistant lithium ion battery according to claim 1, wherein: the outer end of the semiconductor refrigeration piece (1) is tightly attached to the inner wall of the battery box (3).

5. A thermally coupled low temperature resistant lithium ion battery according to claim 1, wherein: the temperature sensor (5), the lithium battery (2), the H-bridge circuit assembly (9) and the electric control switch (10) are electrically connected with the control main board (6).

6. A thermally coupled low temperature resistant lithium ion battery according to claim 1, wherein: and the wiring terminal (4) of the semiconductor refrigerating sheet (1) is arranged on the inner side of the adhesive glue.

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