CN110048039A - Thermal cell temperature barrier and thermal cell - Google Patents

Abstract

The invention relates to the technical field of thermal batteries, and discloses a thermal protection device for thermal batteries and a thermal battery. Wherein, the device includes: an upper support plate, a lower support plate, a connection piece connecting the upper support plate and the lower support plate, a connection piece disposed between the upper support plate and the lower support plate and connected with the connection piece a separator plate, and a first thermal insulation component and a second thermal insulation component respectively arranged on the upper and lower surfaces of the separator plate, wherein the separator plate separates the stack of the thermal battery into equally divided stack units, And the divided stack units are in contact with the first heat insulating assembly and/or the second heat insulating assembly. Therefore, the heat accumulated in the middle of the stack is effectively dispersed, the influence of the heat on the safety of the battery is reduced, and the reliability of the output of the battery is enhanced.

Description

Thermal battery thermal protection device and thermal battery

technical field

The invention relates to the technical field of thermal batteries, in particular to a thermal protection device for thermal batteries and a thermal battery.

Background technique

The unit thermal battery (single cell) is composed of a stack, a battery cover assembly, a battery shell assembly, etc., and the electrical performance output is realized through the battery cover pole. At present, with the development and progress of thermal battery technology, the volume and height of the thermal battery are getting larger and larger, and the core working component stack inside the thermal battery is also getting higher and higher. Since the thermal battery works by heat, a higher stack will inevitably accumulate more heat. According to the conventional stack structure design, the heat generated by the stack cannot be effectively controlled, thus affecting the safety and electrical performance output of the battery. In order to improve the working safety of the high-stack thermal battery, an internal thermal protection structure of the unit cell capable of dispersing the heat of the high-stack is required.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a thermal battery thermal protection device and a thermal battery, which can solve the problem that the heat generated by the stack cannot be effectively controlled.

The technical solution of the present invention: a thermal battery thermal protection device, the device includes: an upper support plate, a lower support plate, a connecting piece connecting the upper support plate and the lower support plate, and a connection member disposed on the upper support plate A partition plate connected between the lower support plate and the connecting piece, and a first thermal insulation component and a second thermal insulation component respectively disposed on the upper and lower surfaces of the partition plate, wherein the partition plate will heat The stack of the battery is divided into equally divided stack cells, and the divided stack cells are in contact with the first thermal insulation assembly and/or the second thermal insulation assembly.

Preferably, the number of the separators is one, the separators separate the stack of the thermal battery into two equally divided stack units, and one of the two stack units is connected to the first stack unit. The thermal insulation assembly is in contact, and the other of the two stack cells is in contact with the second thermal insulation assembly.

Preferably, the number of the connecting pieces is three.

Preferably, the lower support plate is connected with the connecting piece by means of riveting.

Preferably, the upper support plate and the partition plate are connected with the connecting piece by screws.

The present invention also provides a thermal battery comprising the above thermal battery thermal protection device.

Through the above technical solution, a segmented fixed stack structure can be adopted, and the upper support plate, the lower support plate and the connecting piece connecting the upper support plate and the lower support plate constitute the main bearing part of the structure. A separating plate connected with the connecting piece is arranged between the upper supporting plate and the lower supporting plate, so that the stack of the thermal battery can be separated into equal stack units (that is, the stacks are separated up and down), And a heat insulation component is added between the separator plate and the stack unit. Therefore, the heat accumulated in the middle of the stack is effectively dispersed, the influence of the heat on the safety of the battery is reduced, and the reliability of the output of the battery is enhanced.

Description of drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention, constitute a part of the specification, are used to illustrate the embodiments of the invention, and together with the description, serve to explain the principles of the invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a cross-sectional view of a thermal battery thermal protection device according to an embodiment of the present invention; and

FIG. 2 is a plan view along the direction A in FIG. 1 .

Description of reference numerals

1 upper support plate; 2 lower support plate; 3 connecting piece;

4 the dividing plate; 5 the first thermal insulation component; 6 the second thermal insulation component.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to assist in a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.

It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, the accompanying drawings only show the device structure and/or processing steps closely related to the solution according to the present invention, and omit the details related to the present invention. Invent other details that are less relevant.

FIG. 1 is a cross-sectional view of a thermal protection device for a thermal battery according to an embodiment of the present invention.

As shown in FIG. 1 , a thermal battery thermal protection device provided by an embodiment of the present invention includes: an upper support plate 1 , a lower support plate 2 , a connector 3 connecting the upper support plate 1 and the lower support plate 2 , The partition plate 4 arranged between the upper support plate 1 and the lower support plate 2 and connected with the connecting piece 3 , and the first heat insulation component 5 and the first heat insulation component 5 and the first heat insulation component respectively arranged on the upper and lower surfaces of the partition plate 4 . Two thermal insulation components 6 (for example, a first thermal insulation component 5 arranged on the upper surface of the partition plate 4, and a second thermal insulation component 6 arranged on the lower surface of the partition plate 4), wherein the partition plate 4 The separator 4 separates the stack of the thermal battery into equally divided stack units, and the divided stack units are in contact with the first heat insulation assembly 5 and/or the second heat insulation assembly 6 (that is, the second heat insulation assembly 6). , the first heat insulation assembly 5 and the second heat insulation assembly 6 may be arranged between the equally divided stack units and the partition plate 4).

Through the above technical solution, a segmented fixed stack structure can be adopted, and the upper support plate, the lower support plate and the connecting piece connecting the upper support plate and the lower support plate constitute the main bearing part of the structure. Between the upper support plate and the lower support plate, a partition plate connected with the connecting piece is arranged, which can separate the stack of the thermal battery into equal stack units (that is, the stack is separated from top to bottom), And a heat insulation component is added between the separator plate and the stack unit. Therefore, the heat accumulated in the middle of the stack is effectively dispersed, the influence of the heat on the safety of the battery is reduced, and the reliability of the output of the battery is enhanced.

According to an embodiment of the invention, the number of the separators 4 may be one, and the separators 4 separate the stack of the thermal battery into two equally divided stack units (for example, the separators 4 It can be arranged in the middle of the upper support plate 1 and the lower support plate 2), one of the two stack units is in contact with the first heat insulation component 5, and the other of the two stack units in contact with the second thermal insulation assembly 6 .

For example, one of the separators 4 can separate the stack from top to bottom, for example, the higher stack is divided into two small stacks, so as to disperse the heat generated in the middle of the stack, so that the middle of the stack does not will overheat.

Those skilled in the art should understand that although only one partition plate 4 is shown in FIG. 1 , the present invention is not limited thereto, and those skilled in the art can set the number of partition plates 4 according to actual needs.

For example, the number of the partition plates 4 may be greater than or equal to one. Taking two separators 4 as an example, the stack of the thermal battery can be divided into three equally divided stack units, and a corresponding thermal insulation component is provided between each stack unit and the separator 4 . That is, the first heat insulating assembly 5 is provided between the stack unit and the upper surface of the separator 4 , and the second heat insulating assembly 6 is provided between the stack unit and the lower surface of the separator 4 .

FIG. 2 is a plan view along the direction A in FIG. 1 .

As shown in FIG. 2 , the number of the connecting members 3 may be three.

Those skilled in the art should understand that although the cross section of the thermal battery thermal protection device shown in FIG. 2 is circular, the present invention is not limited thereto, and other shapes, such as squares, rectangles, polygons, etc., can also be used (for example, The shape of the thermal protection device of the thermal battery can be determined according to the shape of the thermal battery). Correspondingly, the number of the connecting pieces 3 can be adjusted according to the cross-sectional shape.

According to an embodiment of the invention, the lower support plate 2 may be connected to the connecting member 3 by riveting.

According to an embodiment of the invention, the upper support plate 1 and the partition plate 4 are connected to the connecting member 3 by screws.

Wherein, the screw may be, for example, an M2X6 cylinder head screw.

For example, the connecting member 3 may be punched in the corresponding screw holes provided on the upper support plate 1 and the partition plate 4 and screwed into it, so as to realize the fixed connection.

The thermal battery thermal protection device of the present invention will be described below with reference to examples. In this example, the number of the connecting pieces 3 is three and the number of the partition plates 4 is one.

Specifically, the lower support plate 2 and the three connecting pieces 3 can be riveted first to form a fastening frame; a partition plate 4 is provided to divide the single battery into two parts, and the first part of the single battery (for example, the first battery stack unit) is placed in the fastening frame (ie, between the lower support plate 2 and the separator plate 4), and the second heat insulation assembly 6 is arranged between the first part of the single cells and the separator plate 4; The first heat insulation assembly 5 is placed on the separator 4, and then the second part of the single cell is placed on the first heat insulation assembly 5; finally, the upper support plate 1 is placed on the second part of the single cell and the stack unit is fastened , and punch the connector 3 at the corresponding screw holes of the upper support plate 1 and the partition plate 4 and install the screws.

It should be understood by those skilled in the art that the above-mentioned examples are merely exemplary, and are not intended to limit the present invention.

Embodiments of the present invention also provide a thermal battery, which includes the thermal battery thermal protection device described in the above embodiments.

It can be seen from the above embodiments that the thermal battery thermal protection device of the present invention is not only simple to assemble, reliable in strength, but also effectively disperses the heat accumulated in the middle of the stack, reduces the influence of heat on the safety of the battery, and enhances the output of the battery. reliability.

Features described and/or illustrated above for one embodiment may be used in the same or similar manner in one or more other embodiments, and/or in combination with or instead of features in other embodiments Features in use.

It should be emphasized that the term "comprising/comprising" as used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps, components or combinations thereof .

The many features and advantages of these embodiments are apparent from this detailed description, and the appended claims are therefore intended to cover all such features and advantages of these embodiments as fall within their true spirit and scope. Furthermore, since many modifications and changes will readily occur to those skilled in the art, the embodiments of the invention are not intended to be limited to the precise construction and operation illustrated and described, but are to cover all suitable modifications and equivalents falling within the scope thereof thing.

The parts of the present invention that are not described in detail are well known to those skilled in the art.

Claims (6)

1. a kind of thermal cell temperature barrier, which is characterized in that the device includes: upper backup pad (1), lower supporting plate (2), connection The connector (3) of the upper backup pad (1) and the lower supporting plate (2) is arranged in the upper backup pad (1) and lower supporting plate (2) demarcation plate (4) that connect between and with the connector (3) and it is separately positioned on the demarcation plate (4) upper and lower surface First insulating assembly (5) and the second insulating assembly (6), wherein the pile of thermal cell is separated into equal part by the demarcation plate (4) Electric pile unit, and the electric pile unit after equal part connects with first insulating assembly (5) and/or second insulating assembly (6) Touching.

2. the apparatus according to claim 1, which is characterized in that the quantity of the demarcation plate (4) is one, the demarcation plate (4) pile of thermal cell is separated into two electric pile units of equal part, one and described first in described two electric pile units Insulating assembly (5) contact, and another in described two electric pile units is contacted with second insulating assembly (6).

3. the apparatus of claim 2, which is characterized in that the quantity of the connector (3) is three.

4. device according to claim 3, which is characterized in that the lower supporting plate (2) passes through riveting method and the company Fitting (3) connection.

5. device according to claim 4, which is characterized in that the upper backup pad (1) and the demarcation plate (4) pass through spiral shell Nail is connect with the connector (3).

6. a kind of thermal cell, which is characterized in that the thermal cell includes thermal cell thermal protection of any of claims 1-5 Device.