CN108760068B - Temperature sensor and battery pack - Google Patents

Abstract

The purpose of the present invention is to provide a temperature sensor and a battery pack that can appropriately measure the temperature of a cylindrical battery. The temperature sensor (1) is provided with a sensor body (10) having a temperature measurement surface (14a) that comes into contact with the outer peripheral curved surface (2a) of the cylindrical battery (2). The temperature measurement surface (14a) is curved in accordance with the shape of the outer peripheral curved surface (2 a). A temperature sensor (1) comprises: a pressing body (20) which presses the sensor main body (10) in a contact direction in which the temperature measurement surface (14a) and the outer peripheral curved surface (2a) are in contact with each other; and a wind-proof wall (30) that inserts at least a part of the peripheral edge of the temperature measurement surface (14a) between the wind-proof wall and the outer peripheral curved surface (2 a).

Description

Temperature sensor and battery pack

technical field

The present invention relates to a temperature sensor for measuring the temperature of a cylindrical battery and a battery pack including the cylindrical battery and the temperature sensor.

Background technique

Conventionally, a temperature sensor for measuring the temperature of a battery has been proposed for the purpose of preventing overcharge and overdischarge of a battery mounted in a hybrid vehicle, an electric vehicle, or the like. Such a temperature sensor is generally attached so as to be in close contact with the surfaces of the plurality of battery cells constituting the battery, and monitors the temperature of the battery cells (for example, refer to Patent Document 1).

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2011-17638

SUMMARY OF THE INVENTION

Problem to be solved by the present invention

The above-mentioned conventional temperature sensor is configured such that the surface (temperature measuring surface) of a metal heat transfer plate is pressed against the surface of the square-shaped battery cell, and a temperature measuring body (temperature measuring surface) provided in the vicinity of the heat transfer plate is passed. thermistor, etc.) to measure the temperature of the battery cells. Furthermore, in the conventional temperature sensor, in order to increase the contact area between the surface of the square-shaped battery cell and the surface of the heat transfer plate, the temperature measuring surface has a flat shape.

However, for various reasons, a cylindrical battery cell (cylindrical battery) is sometimes used to constitute a battery instead of a square type battery cell. In this case, if the above-mentioned conventional temperature sensor is used as it is, the contact area between the flat temperature measuring surface of the heat transfer plate and the outer peripheral curved surface of the cylindrical battery cell is naturally smaller than the contact area when applied to a corner battery cell . As a result, the conventional temperature sensor may not be able to appropriately measure the temperature of the cylindrical battery cell.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a temperature sensor capable of appropriately measuring the temperature of a cylindrical battery, and a battery pack using the temperature sensor.

technical solutions for problem solving

In order to achieve the aforementioned object, the "temperature sensor" according to the present invention is characterized by the following (1) to (3).

(1) The temperature sensor includes:

a sensor body having a temperature measuring surface curved corresponding to the shape of the outer peripheral curved surface of the cylindrical battery;

a pressing body capable of pressing the sensor body in an abutment direction in which the temperature measuring surface and the outer peripheral curved surface are brought into contact; and

a windproof wall, which is provided on the sensor body,

The said windproof wall is provided so that at least a part of the peripheral edge part of the said temperature measuring surface may be arrange|positioned between the said windproof wall and the said outer peripheral curved surface.

(2) In the temperature sensor described in (1) above,

The pressing body is provided on the storm wall and has a structure capable of elastically pressing the storm wall in the abutting direction.

(3) In the temperature sensor according to (1) or (2) above,

The sensor body has:

a heat transfer body including a first heat transfer plate constituting the temperature measurement surface, and a pair of second heat transfer plates extending from peripheral edge portions of the first heat transfer plate so as to face each other;

a temperature measuring body arranged so as to be surrounded by the first heat transfer plate and the pair of the second heat transfer plates; and

an insulator provided between the temperature measuring body and the heat transfer body.

According to the temperature sensor having the configuration of (1) above, since the temperature measuring surface of the sensor body has a curved shape corresponding to the shape of the outer peripheral curved surface of the cylindrical battery, it is different from a conventional temperature sensor having a flat shape. Compared with the case of the temperature surface, the contact area between the temperature measurement surface and the outer peripheral curved surface of the cylindrical battery is increased. As a result, the temperature sensor of the present configuration can appropriately measure the temperature of the cylindrical battery.

Furthermore, in a state where the temperature measuring surface is in contact with the outer peripheral curved surface of the cylindrical battery, at least a part of the peripheral edge portion of the temperature measuring surface is inserted between the storm wall and the outer peripheral curved surface. Therefore, for example, when the cooling air for cooling the cylindrical battery is blown to the cylindrical battery from the outside of the temperature sensor, the cooling air can hardly be blown to the temperature measuring surface and the circle compared with the case where there is no windproof wall. The contact position of the cylindrical battery. As a result, the temperature measurement accuracy by the temperature sensor can be improved compared with the case where there is no windproof wall.

Therefore, the temperature sensor of the present configuration can appropriately measure the temperature of the cylindrical battery.

In addition, it is preferable that the windproof wall is provided so that it may isolate|separate the cooling wind as much as possible in the peripheral part of the temperature measuring surface. For example, in the case where the temperature measuring surface has a long rectangular shape in the axial direction of the cylindrical battery, the windproof wall is arranged so that both ends (corresponding to the long sides of the rectangle) of the temperature measuring surface in the circumferential direction of the outer peripheral curved surface Inserted between the storm wall and the outer peripheral surface. Furthermore, for example, the storm wall is arranged so that the entire peripheral edge portion of the temperature measurement surface is inserted between the outer peripheral curved surface of the cylindrical battery.

According to the temperature sensor having the configuration of the above (2), by providing the pressing body on the windproof wall, the windproof wall can also be used for the portion that presses the sensor body. Therefore, the size of the temperature sensor can be reduced as compared with the case where the pressing body is provided in another part.

According to the temperature sensor having the configuration of the above (3), the temperature measuring body is arranged so as to be surrounded by the first heat transfer plate and the second heat transfer plate. Therefore, the heat transferred from the surface of the cylindrical battery to the temperature measuring surface of the first heat transfer plate can be transferred from various directions like wrapping the temperature measuring body via the first heat transfer plate and the second heat transfer plate. Therefore, compared with the case where the heat transmitted from the cylindrical battery is transferred to the temperature measuring body from one direction, the temperature of the cylindrical battery can be measured more appropriately.

For example, when the temperature measurement surface has a long rectangular shape in the axial direction of the cylindrical battery, a pair of second heat transfer plates are provided from both ends of the temperature measurement surface in the circumferential direction of the outer peripheral curved surface (equivalent to the long side of the rectangle) extends. Thereby, the temperature measuring body can be wrapped by the first heat transfer plate and the second heat transfer plate, and heat can be efficiently transferred from the heat transfer plate to the temperature measuring body.

Furthermore, an insulator is provided between the temperature measuring body and the heat transfer body. Therefore, even when a highly conductive material (eg, metal) is used as the heat transfer body, the cylindrical battery and the temperature measuring body can be reliably insulated. Thereby, it is possible to prevent failure of the temperature measuring body due to electrical short-circuit between the cylindrical battery and the temperature measuring body.

In order to achieve the above object, the "battery pack" according to the present invention is characterized by the following (4).

(4) A battery pack comprising a cylindrical battery and a temperature sensor,

The temperature sensor has:

a sensor body having a temperature measuring surface curved corresponding to the shape of the outer peripheral curved surface of the cylindrical battery;

a pressing body capable of pressing the sensor body in an abutment direction in which the temperature measuring surface abuts the outer peripheral curved surface; and

a windproof wall, which is provided on the sensor body,

The storm wall is provided so that at least a part of the peripheral edge portion of the temperature measuring surface is arranged between the storm wall and the outer peripheral curved surface.

According to the battery pack having the configuration of (4) above, since the temperature measuring surface of the sensor body has a curved shape corresponding to the shape of the outer peripheral curved surface of the cylindrical battery, it is different from a conventional temperature sensor having a flat shape. Compared with the case of the temperature surface, the contact area between the temperature measurement surface and the outer peripheral curved surface of the cylindrical battery is increased. As a result, the temperature sensor of the present configuration can appropriately measure the temperature of the cylindrical battery.

Furthermore, in a state where the temperature measuring surface is in contact with the outer peripheral curved surface of the cylindrical battery, at least a part of the peripheral edge portion of the temperature measuring surface is inserted between the storm wall and the outer peripheral curved surface. Therefore, for example, when the cooling air for cooling the cylindrical battery is blown to the cylindrical battery from the outside of the temperature sensor, the cooling air can hardly be blown to the temperature measuring surface and the circle compared with the case where there is no windproof wall. The contact position of the cylindrical battery. As a result, the temperature measurement accuracy by the temperature sensor can be improved compared with the case where there is no windproof wall.

Therefore, the temperature sensor of the present configuration can appropriately measure and manage the temperature of the cylindrical battery.

Invention effect

According to the present invention, a temperature sensor capable of appropriately measuring the temperature of a cylindrical battery, and a battery pack using the temperature sensor can be provided.

Description of drawings

FIG. 1 is a perspective view of a temperature sensor according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the temperature sensor.

Fig. 3(a) is a side view of the temperature sensor, and Fig. 3(b) is an enlarged view of part B of Fig. 3(a).

FIG. 4 is a lower surface view of the temperature sensor.

5( a ) is a cross-sectional view corresponding to the A-A cross section of FIG. 3( a ) of the battery pack according to the embodiment of the present invention, and FIG. 5( b ) is an enlarged view around the temperature measurement surface of FIG. 5( a ) enlarged view of .

FIG. 6 is a diagram for explaining the action of the windshield when cooling air is blown to the cylindrical battery from the outside of the temperature sensor.

Description of reference numerals

1: Temperature sensor

2: Cylindrical battery

2a: Peripheral surface

3: battery pack

10: Sensor body

12: Heat transfer body

13: Thermometer

14: 1st heat transfer plate

14a: Temperature measuring surface

15: Second heat transfer plate

19: Pouring resin material (insulator)

20: Press the body

30: Windbreak Wall

Detailed ways

<Embodiment>

Hereinafter, “the temperature sensor 1 for measuring the temperature of the cylindrical battery 2 ” and “the battery pack 3 including the cylindrical battery 2 and the temperature sensor 1 ” according to the embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 5 , the temperature sensor 1 includes a sensor body 10 , a pressing body 20 , a storm wall 30 , and a restricting portion 40 . Hereinafter, for convenience of description, as shown in FIG. 1 , “front-rear direction”, “up-down direction”, “width direction”, “front”, “rear”, “upper” and “lower” are defined. The "front-rear direction", the "up-down direction", and the "width direction" are orthogonal to each other. The width direction corresponds to the "circumferential direction" in the present invention. Hereinafter, each member constituting the temperature sensor 1 will be sequentially described.

First, the sensor body 10 will be described. In particular, as shown in FIG. 5( a ) corresponding to the cross-sectional view taken along the line A-A of FIG. 3( a ), the sensor body 10 includes a case 11 , a heat transfer body 12 , and a temperature measuring body 13 .

The casing 11 is made of resin, and as can be seen from FIGS. 2 and 5( a ), has a rectangular cylindrical shape extending in the front-rear direction. The front end surface of the casing 11 is closed, and the rear end surface is opened. A later-described electric wire 18 connected to the temperature measuring body 13 extends from the opening of the rear end surface of the casing 11 (see FIG. 1 ).

The heat transfer body 12 is made of a highly conductive material (eg, metal). As can be seen from FIG. 2 and FIG. 5( a ), the heat transfer body 12 includes a first heat transfer plate 14 extending in the front-rear direction, and a flat plate while standing upright from both ends in the width direction of the first heat transfer plate 14 . A pair of second heat transfer plates 15 extending in the front-rear direction. The heat transfer body 12 is formed by bending a metal plate, for example.

The lower surface of the first heat transfer plate 14 is a surface that functions as a temperature measuring surface 14a in contact with the outer peripheral curved surface 2a (see FIG. 5 ) of the cylindrical battery 2 . In order to increase the contact area between the temperature measuring surface 14a and the outer peripheral curved surface 2a of the cylindrical battery 2, the cross-sectional shape of the temperature measuring surface 14a of the first heat transfer plate 14 perpendicular to the front-rear direction (the cross-sectional shape shown in FIG. 5 ) ) has an arc-like shape curved upward in accordance with the shape of the outer peripheral curved surface 2a. The radius of the arc-shaped shape is the same value as the radius of curvature of the outer peripheral curved surface 2 a of the cylindrical battery 2 or a slightly larger value.

As can be seen from FIG. 5( a ), the heat transfer body 12 and the casing 11 are integrally formed by injection molding. Specifically, the entire pair of second heat transfer plates 15 are embedded in the interior of the pair of side walls of the casing 11 (see FIG. 5( a )), and the entire first heat transfer plate 14 (the entire temperature measuring surface 14 a ) is embedded. It is exposed directly below the lower wall of the casing 11 (see FIG. 4 ).

As shown in FIG. 2, the temperature measuring body 13 is a thermistor element, and is sealed with a resin 13a. A pair of lead wires 16 connected to the temperature measuring body 13 extends from the rear end of the resin-sealed temperature measuring body 13 . The pair of electric wires 18 are connected to a temperature measurement device or a temperature measurement circuit board (not shown).

The temperature measuring body 13 is inserted from the opening of the rear end surface of the rectangular cylindrical case 11, and as shown in FIG. The heat transfer plate 15 is arranged so as to be surrounded. The periphery of the temperature measuring body 13 in the inner space of the casing 11 is filled with a resin-infused material 19 . The temperature measuring body 13 is fixed in the casing 11 and protected by the impregnating resin material 19 .

Next, the storm wall 30 will be described. In this example, the windproof wall 30 has the function of reducing the cooling wind blowing to the contact position between the temperature measuring surface 14a and the cylindrical battery 2 and the function of fixing the pressing body 20 (specifically, the cantilever-shaped pressing body 20) side) to perform a fixed function.

As shown in FIGS. 1 to 3 , the storm wall 30 includes a pair of storm wall main bodies 31 . The pair of storm wall main bodies 31 integrally protrude outward in the width direction from the lower ends of both side walls of the rectangular-shaped casing 11 from the vicinity of the front end to the vicinity of the center in the front-rear direction, and extend in the front-rear direction in a flat plate shape.

A locking portion 32 for locking and fixing the pressing body 20 and a stopper portion 33 for abutting the distal end surface of the pressing body 20 at the rear of the locking portion 32 are formed on the upper surface of the storm wall main body 31 . An insertion hole (through hole penetrating in the front-rear direction) into which the pressing body 20 is inserted is formed in the locking portion 32 .

Next, the pressing body 20 will be described. The pressing bodies 20 are respectively provided on the pair of windproof walls 30 . The pair of pressing bodies 20 elastically press the temperature measuring surface 14 a of the sensor body 10 downward (ie, the contact direction with the outer peripheral curved surface 2 a of the cylindrical battery 2 ). In other words, the pair of pressing bodies 20 has a function of generating downward elastic force.

The pressing body 20 is constituted by a leaf spring. In particular, as shown in FIG. 3 , the pressing body 20 includes a first portion 21 that extends forward from one end of the leaf spring, and a second portion 22 that is bent upward and rearward from the front end of the first portion 21 . a third part 23 which is bent from the upper end of the second part 22 and extends obliquely downward and rearward; and a fourth part 24 which is bent from the lower end of the third part 23 and is bent upward and rearwardly extend to the other end of the leaf spring.

The first portion 21 is inserted into the insertion hole of the locking portion 32 of the storm wall body 31 from the front, and is fixed to the storm wall body 31 in a state where the rear end (one end of the leaf spring) contacts the stopper portion 33 of the storm wall body 31 . The front end portion of the first portion 21 (=the lower end portion of the second portion 22 ) functions as the fixed end 26 of the pressing body 20 .

In addition, the lower end portion of the third portion 23 (=the lower end portion of the fourth portion 24 ) functions as the free end 27 of the pressing body 20 . The upper end portion of the second portion 22 (=the upper end portion of the third portion 23 ) is positioned above the upper wall of the casing 11 and serves as the pressing body 20 that is pressed against the pressing wall 50 (see FIG. 5( a )). The top 28 comes into play. In this way, the pressing body 20 has a cantilever-like configuration.

Next, the restricting unit 40 will be described. The restricting portion 40 has a function of restricting the movable range (movable range) of the free end 27 of the pressing body 20 . As shown in FIGS. 1 to 3 , the restricting portion 40 is a box-shaped portion having an internal space (storage chamber), and is provided so as to extend from the rear end portions of the both side walls of the rectangular cylindrical case 11 to the width thereof integrally. Protruding outward in direction.

In particular, as shown in FIG. 3 , the front wall 41 of the restricting portion 40 extends obliquely so as to follow the extending direction of the third portion 23 of the pressing body 20 . The front wall 41 is formed with a window (through hole) 42 that communicates with the storage chamber of the restricting portion 40 while extending in the extending direction of the front wall 41 . The fourth portion 24 (including the free end 27 ) of the pressing body 20 enters the storage chamber of the restricting portion 40 through the window 42 and is stored.

In the free state of the pressing body 20 (the state in which the elastic restoring force does not act), as shown in FIG. A sufficient clearance corresponding to the maximum amount of elastic deformation of the pressing body 20 generated at the time.

In addition, only a small gap is ensured between the free end 27 and the upper wall surface 43 of the window 42 (see FIG. 3( b )). Accordingly, even if an excessive load (refer to the white arrow in FIG. 3( b ) is applied upward unintentionally to the pressing body 20 , the further upward movement due to the contact of the free end 27 with the upper wall surface 43 of the window 42 is prevented. restriction, whereby excessive upward deformation of the pressing body 20 is prevented. It should be noted that, in the free state of the pressing body 20, a gap may not be secured between the free end 27 and the upper wall surface 43 of the window 42 (ie, the free end 27 and the upper wall surface 43 of the window 42 may abut).

In addition, only a small gap is ensured between the free end 27 and both side wall surfaces in the width direction of the window 42 . Thereby, even when an excessive external force acts on the pressing body 20 in the width direction unintentionally, the pressing body 20 is prevented from being deformed excessively in the width direction.

Next, the usage state of the temperature sensor 1 having the above-described configuration will be described. As shown in FIG. 5( a ), the temperature sensor 1 is attached to the cylindrical battery 2 arranged so as to be immovable relative to each other in a state where the tops 28 of the pair of pressing bodies 20 are pressed against the pressing wall 50 (flat wall). and pressing against the wall 50 .

In the mounted state of the temperature sensor 1, the pair of pressing bodies 20 are elastically deformed by the reaction force from the pressing wall 50, and the free ends 27 move downward (more precisely, move downward and rearward obliquely). As a result, the pair of pressing bodies 20 generate an elastic restoring force that presses the sensor body 10 (temperature measuring surface 14 a ) downward toward the outer peripheral curved surface 2 a of the cylindrical battery 2 via the storm wall body 31 . This elastic restoring force maintains the close contact state between the temperature measuring surface 14a of the temperature sensor 1 and the outer peripheral curved surface 2a of the cylindrical battery 2 (see FIG. 5( b )). In this way, since the temperature sensor 1 is attached to the cylindrical battery 2, the battery pack 3 is obtained.

In the mounted state of the temperature sensor 1 (the state where the temperature measuring surface 14a of the temperature sensor 1 is in close contact with the outer peripheral curved surface 2a of the cylindrical battery 2), the amount corresponding to the temperature of the outer peripheral curved surface 2a of the cylindrical battery 2 The heat is transferred to the temperature measuring surface 14 a , and the heat transferred to the temperature measuring surface 14 a is transferred to the temperature measuring body 13 via the first heat transfer plate 14 and the pair of second heat transfer plates 15 . As a result, the temperature of the outer peripheral curved surface 2a of the cylindrical battery 2 is measured by the temperature measuring body 13 connected to the temperature measuring device or the temperature measuring circuit board.

Furthermore, in the attached state of the temperature sensor 1 , the wind shield wall 30 sandwiches the widthwise both ends of the temperature measuring surface 14 a between the outer peripheral curved surface 2 a of the cylindrical battery 2 . Therefore, as indicated by the bold black arrows shown in FIG. 6 , for example, even when the cooling air for cooling the cylindrical battery 2 is blown to the cylindrical battery from the outside (eg, above) of the temperature sensor 1 In the case of 2, the cooling air blowing to the contact position between the temperature measuring surface 14a and the cylindrical battery 2 can also be reduced by the wind shield 30 . As a result, the accuracy of temperature measurement by the temperature sensor 1 can be improved.

As described above, according to the temperature sensor 1 and the battery pack 3 according to the embodiment of the present invention, since the temperature measuring surface 14 a of the sensor body 10 has a curved shape corresponding to the shape of the outer peripheral curved surface 2 a of the cylindrical battery 2 , Compared with the case where the temperature measuring surface has a flat shape like a conventional temperature sensor, the contact area between the temperature measuring surface 14a and the outer peripheral curved surface 2a of the cylindrical battery 2 is increased, so that the temperature of the cylindrical battery 2 can be measured more appropriately .

Furthermore, in a state where the temperature measurement surface 14a is in contact with the outer peripheral curved surface 2a of the cylindrical battery 2, the windshield 30 sandwiches both widthwise ends of the temperature measurement surface 14a and the outer peripheral curved surface 2a. As a result, for example, even when the cooling air for the cylindrical battery 2 is blown to the cylindrical battery 2 from the outside (for example, above) of the temperature sensor 1 , the windproof wall 30 can reduce the blowing. The cooling air reaches the contact position between the temperature measuring surface 14a and the cylindrical battery 2 . As a result, the accuracy of temperature measurement by the temperature sensor 1 can be improved.

Furthermore, the pressing body 20 is provided on the windproof wall 30 . Therefore, the windproof wall 30 can also be used as a portion for pressing the sensor body 10 . Therefore, compared with the case where the pressing body 20 is provided in another part, the temperature sensor 1 can be reduced in size.

Furthermore, a resin impregnated material 19 (insulator) is provided between the temperature measuring body 13 and the heat transfer body 12 . Therefore, even when a highly conductive material (eg, metal) is used as the heat transfer body 12 , the cylindrical battery 2 and the temperature measuring body 13 can be reliably insulated.

<Other forms>

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be employed within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement position, and the like of each constituent element of the above-described embodiment may be any constituent element capable of completing the present invention, and are not limited.

For example, in the above-described embodiment, the restricting portion 40 is provided in the temperature sensor 1, but the restricting portion 40 may not be provided.

Furthermore, in the above-described embodiment, the thermistor is used as the temperature measuring body 13 of the temperature sensor 1 . However, a PTC (Positive Temperature Coefficient) thermistor, a thermocouple, a semiconductor element, a bimetal, or the like can also be used as the temperature measuring body 13 .

Furthermore, in the above-described embodiment, the pair of pressing bodies 20 are provided on both sides in the width direction of the housing 11 , but a single pressing body 20 may be provided, for example, at the center position in the width direction on the upper side of the housing 11 . In addition, in the above-described embodiment, the pressing body 20 is provided on the storm wall 30 , but the pressing body 20 may be provided at a position other than the storm wall 30 .

Here, the features of the temperature sensor 1 and the battery pack 3 according to the present invention described above are briefly summarized and listed as the following (1) to (4).

(1) The temperature sensor (1) includes:

a sensor body (10) having a temperature measuring surface (14a) curved corresponding to the shape of the outer peripheral curved surface (2a) of the cylindrical battery (2);

a pressing body (20) capable of pressing the sensor main body (10) in an abutment direction in which the temperature measuring surface (14a) is brought into contact with the outer peripheral curved surface (2a); and

a windproof wall (30), which is provided on the sensor body (10),

The windproof wall (30) is provided so that at least a part of the peripheral edge of the temperature measuring surface (14a) is arranged between the windproof wall (30) and the outer peripheral curved surface (2a).

(2) In the temperature sensor (1) according to (1) above,

The pressing body (20) has an elastic structure provided on the windproof wall (30) and capable of elastically pressing the windproof wall (30) in the abutting direction.

(3) In the temperature sensor according to (1) or (2) above,

The sensor body (10) has:

A heat transfer body (12) having a first heat transfer plate (14) constituting the temperature measuring surface (14a), and a pair of extending from the peripheral edge of the first heat transfer plate (14) to face each other the second heat transfer plate (15);

a temperature measuring body (13) arranged to be surrounded by the first heat transfer plate (14) and the pair of the second heat transfer plates (15); and

An insulator (19) is provided between the temperature measuring body (13) and the heat transfer body (12).

(4) A battery pack (3) comprising a cylindrical battery (2) and a temperature sensor (1),

The temperature sensor (1) has:

a sensor body (10) having a temperature measuring surface (14a) curved corresponding to the shape of the outer peripheral curved surface (2a) of the cylindrical battery (2);

a pressing body (20) capable of pressing the sensor main body (10) in an abutment direction in which the temperature measuring surface (14a) is brought into contact with the outer peripheral curved surface (2a); and

a windproof wall (30), which is provided on the sensor body (10),

The windproof wall (30) is provided so that at least a part of the peripheral edge of the temperature measuring surface (14a) is arranged between the windproof wall (30) and the outer peripheral curved surface (2a).

This application is based on Japanese Patent Application (Patent Application No. 2017-084557) filed on April 21, 2017, the contents of which are incorporated by reference.

Claims (4)

1. a temperature sensor, is characterized in that, comprises: a sensor body having a temperature measuring surface curved corresponding to the shape of the outer peripheral curved surface of the cylindrical battery; a pressing body capable of pressing the sensor body in an abutment direction in which the temperature measuring surface and the outer peripheral curved surface are brought into contact; and a windproof wall, which is provided in the housing of the sensor body, The windproof wall is provided so that at least a part of the peripheral edge of the temperature measuring surface is arranged between the windproof wall and the outer peripheral curved surface, The windproof wall includes a pair of windproof wall bodies, The pair of windproof wall bodies protrudes outward in the width direction at the lower ends of both side walls of the casing and extends in the front-rear direction in a flat plate shape, The pressing bodies are respectively fixed to the pair of windproof wall bodies, The pressing body elastically presses the pair of storm wall main bodies in the abutting direction. 2. The temperature sensor of claim 1, wherein, The sensor body has: a heat transfer body having a first heat transfer plate constituting the temperature measurement surface, and a pair of second heat transfer plates extending from a peripheral edge portion of the first heat transfer plate so as to face each other; a temperature measuring body arranged so as to be surrounded by the first heat transfer plate and the pair of the second heat transfer plates; and An insulator is provided between the temperature measuring body and the heat transfer body. 3. A battery pack comprising a cylindrical battery and a temperature sensor, The temperature sensor has: a sensor body having a temperature measuring surface curved corresponding to the shape of the outer peripheral curved surface of the cylindrical battery; a pressing body capable of pressing the sensor body in an abutment direction in which the temperature measuring surface and the outer peripheral curved surface are brought into contact; and a storm wall provided on the housing of the sensor body, and arranged so as to sandwich at least a part of the peripheral edge of the temperature measurement surface between the storm wall and the outer peripheral curved surface, The windproof wall includes a pair of windproof wall bodies, The pair of windproof wall bodies protrudes outward in the width direction at the lower ends of both side walls of the casing and extends in the front-rear direction in a flat plate shape, The pressing bodies are respectively fixed to the pair of windproof wall bodies, The pressing body elastically presses the pair of storm wall main bodies in the abutting direction. 4. The battery pack of claim 3, wherein, The sensor body has: a heat transfer body having a first heat transfer plate constituting the temperature measurement surface, and a pair of second heat transfer plates extending from a peripheral edge portion of the first heat transfer plate so as to face each other; a temperature measuring body arranged so as to be surrounded by the first heat transfer plate and the pair of the second heat transfer plates; and An insulator is provided between the temperature measuring body and the heat transfer body.

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