CN110571371B - Protection device and battery pack - Google Patents
Protection device and battery pack Download PDFInfo
- Publication number
- CN110571371B CN110571371B CN201910487625.8A CN201910487625A CN110571371B CN 110571371 B CN110571371 B CN 110571371B CN 201910487625 A CN201910487625 A CN 201910487625A CN 110571371 B CN110571371 B CN 110571371B
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- China
- Prior art keywords
- temperature sensor
- sensor
- protector
- holding structure
- temperature
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- 230000001012 protector Effects 0.000 claims abstract description 72
- 238000003780 insertion Methods 0.000 claims abstract description 64
- 230000037431 insertion Effects 0.000 claims abstract description 64
- 238000009529 body temperature measurement Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 29
- 238000001514 detection method Methods 0.000 description 17
- 238000005192 partition Methods 0.000 description 13
- 210000005056 cell body Anatomy 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
Abstract
The technical problem to be solved by the invention is to use the same temperature sensor. The protection device comprises a 1 st protector (10) and a 2 nd protector (20) for respectively holding and protecting the same temperature sensor (131) in different mounting manners, wherein the 1 st protector comprises a 1 st sensor holding structural body (11) for holding and protecting the temperature sensor inserted along a 1 st insertion direction (D1), the 2 nd protector comprises a 2 nd sensor holding structural body (21) for holding and protecting the temperature sensor inserted along a 2 nd insertion direction (D2), the 1 st sensor holding structural body is provided with a locking part (12) which is arranged opposite to a locked part (131e) of the temperature sensor on the opposite side of the 1 st insertion direction, the 2 nd sensor holding structural body comprises a sensor accommodating body (23) for accommodating the temperature sensor and a cover body (24), the sensor accommodating body and the cover body comprise a 1 st abutting part (25) and a 2 nd abutting part (26) for clamping the temperature sensor, at least one of the 1 st abutting portion and the 2 nd abutting portion is formed to abut against the engaged portion.
Description
Technical Field
The invention relates to a protection device and a battery pack.
Background
Conventionally, a vehicle such as an electric vehicle or a hybrid vehicle is mounted with a battery pack for supplying power to a rotating electric machine as a drive source thereof or charging regenerative electric power generated by the rotating electric machine. The battery pack includes a battery module in which a plurality of battery cells are arranged and electrically connected to each other through a conductive member. In such a vehicle, the battery state (temperature, voltage, etc.) of the battery cell is monitored in order to perform stable charge and discharge control of the battery module. The protection device protects and maintains the battery state detection sensor. Patent document 1 below discloses a mounting structure for a temperature sensor.
Documents of the prior art
Patent document
Patent document 1: japanese unexamined patent application publication No. 2014-44850
Disclosure of Invention
Technical problem to be solved by the invention
However, the temperature sensors are mounted at predetermined temperature measurement positions at a plurality of locations related to the battery cells in the battery pack. In addition, in the battery pack, depending on the location of the temperature measurement position, the workability of mounting the temperature sensor, and the like, the mounting direction of the temperature sensor sometimes has to be changed. In such a case, for example, a plurality of temperature sensors are prepared in one battery pack.
Therefore, an object of the present invention is to provide a protection device and a battery pack that can use the same temperature sensor even when the mounting method is different.
Means for solving the problems
In order to achieve the above object, a protection device according to the present invention is a protection device for protecting a same temperature sensor in which a temperature measuring body, a base body, and a held body are arranged in a straight line in this order, the protection device including: a 1 st protector that holds and protects the temperature sensor in a 1 st mounting manner and a 2 nd protector that holds and protects the temperature sensor in a 2 nd mounting manner, the 1 st protector having a 1 st sensor holding structure that holds and protects the temperature sensor inserted in a 1 st insertion direction orthogonal to the arrangement direction and disposes the temperature sensor at a 1 st temperature measurement position of the battery module with respect to the battery cell, the 2 nd protector having a 2 nd sensor holding structure that holds and protects the temperature sensor inserted in a 2 nd insertion direction along the arrangement direction and disposes the temperature sensor at a 2 nd temperature measurement position of the battery module with respect to the battery cell, the 1 st sensor holding structure is provided with a locking portion for each of the locked portions of the temperature sensor, the locking portion being disposed opposite to the locked portion of the held body in the 1 st insertion direction after completion of insertion of the temperature sensor, and the 2 nd sensor holding structure includes: a sensor accommodating body which has an insertion port for the temperature sensor and accommodates the temperature sensor inserted from the insertion port; and a cover body that closes the insertion opening, wherein the sensor housing body has a 1 st abutting portion that abuts against the temperature sensor so as to sandwich the temperature sensor between the cover body and the cover body in the arrangement direction, the cover body has a 2 nd abutting portion that abuts against the temperature sensor so as to sandwich the temperature sensor between the sensor housing body and the cover body in the arrangement direction, and at least one of the 1 st abutting portion and the 2 nd abutting portion is formed so as to abut against the engaged portion.
Here, it is preferable that the 1 st protector is provided with the 1 st sensor holding structure so that the temperature sensor is disposed in a 1 st flow path of the gas discharged from the battery cell, and the 2 nd protector is provided with the 2 nd sensor holding structure so that the temperature sensor is disposed in a 2 nd flow path of the gas discharged from the battery cell.
Further, it is preferable that the 1 st protector has a 1 st electric wire holding structure body that holds and protects the electric wire pulled out in the array direction from the temperature sensor held and protected by the 1 st sensor holding structure body, and the 2 nd protector has a 2 nd electric wire holding structure body that holds and protects the electric wire pulled out in the orthogonal direction with respect to the array direction from the temperature sensor held and protected by the 2 nd sensor holding structure body.
In order to achieve the above object, a battery pack according to the present invention includes: a plurality of battery modules including a plurality of battery cells therein; and a protection device for protecting a temperature sensor for detecting a temperature of a temperature measurement target related to the battery cell, the protection device being a protection member for protecting the same temperature sensor in which a temperature measurement body, a base body, and a held body are arranged in a straight line in this order, the protection device including: a 1 st protector that holds and protects the temperature sensor in a 1 st mounting manner and a 2 nd protector that holds and protects the temperature sensor in a 2 nd mounting manner, the 1 st protector having a 1 st sensor holding structure that holds and protects the temperature sensor after being inserted in a 1 st insertion direction orthogonal to the arrangement direction and that arranges the temperature sensor at a 1 st temperature measurement position of the battery module with respect to the battery cell, the 2 nd protector having a 2 nd sensor holding structure that holds and protects the temperature sensor after being inserted in a 2 nd insertion direction along the arrangement direction and that arranges the temperature sensor at a 2 nd temperature measurement position of the battery module with respect to the battery cell, the 1 st sensor holding structure is provided with a locking portion for each of the locked portions of the temperature sensor, the locking portion being disposed opposite to the locked portion of the held body in the 1 st insertion direction after completion of insertion of the temperature sensor, and the 2 nd sensor holding structure includes: a sensor accommodating body which has an insertion port for the temperature sensor and accommodates the temperature sensor inserted from the insertion port; and a cover body that closes the insertion opening, wherein the sensor housing body has a 1 st abutting portion that abuts against the temperature sensor so as to sandwich the temperature sensor between the cover body and the cover body in the arrangement direction, the cover body has a 2 nd abutting portion that abuts against the temperature sensor so as to sandwich the temperature sensor between the sensor housing body and the cover body in the arrangement direction, and at least one of the 1 st abutting portion and the 2 nd abutting portion is formed so as to abut against the engaged portion.
Effects of the invention
In the protection device and the battery pack according to the present invention, although the mounting manner of the temperature sensor is different between the 1 st protector and the 2 nd protector, the same temperature sensor can be used for the 1 st protector and the 2 nd protector.
Drawings
Fig. 1 is a perspective view showing a protection device and a battery pack according to an embodiment.
Fig. 2 is a perspective view of the protection device and the battery pack according to the embodiment viewed from another angle.
Fig. 3 is a perspective view showing the temperature detection member.
Fig. 4 is an exploded perspective view of the 1 st protector.
Fig. 5 is a perspective view of the 1 st sensor holding structure of the 1 st protector as viewed from the insertion port side.
Fig. 6 is a perspective view of the 1 st sensor holding structure to which the 1 st protector of the temperature detection member is attached, as viewed from the insertion port side.
Fig. 7 is a perspective view of the 1 st sensor holding structure to which the 1 st protector of the temperature detector is attached, as viewed from the projection port side.
Fig. 8 is an exploded perspective view for explaining the lid member.
Fig. 9 is an exploded perspective view of the 2 nd protector.
Fig. 10 is an exploded perspective view of the 2 nd sensor holding structure and the cover of the 2 nd protector as viewed from the insertion port side.
Fig. 11 is a perspective view of the 2 nd sensor holding structure body to which the 2 nd protector of the temperature detecting member and the lid member is attached, as viewed from the projection port side.
Fig. 12 is a plan view showing the 2 nd sensor holding structure body of the 2 nd protector to which the temperature detecting member and the lid member are attached.
Fig. 13 is a sectional view taken along line X1-X1 of fig. 12.
Fig. 14 is a sectional view taken along line X2-X2 of fig. 12.
Fig. 15 is a perspective view of the cover member as viewed from the inside.
Description of the symbols
1 protective device
10 th 1 protective element
11 st sensor holding structure
12 locking part
13 st electric wire holding structure
20 nd 2 protective part
21 nd 2 sensor holding structure
22 insertion opening
23 sensor housing
24 cover body
25 1 st abutting part
26 nd 2 nd abutment
27 nd 2 nd electric wire holding structure
100 battery pack
110 cell module
130 temperature detecting element
131 temperature sensor
131a temperature measuring body
131b base body
131c held body
131e locked part
132 electric wire
D2 insertion direction 2
Detailed Description
Hereinafter, embodiments of a protection device and a battery pack according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiment.
[ embodiment ]
One embodiment of a protection device and a battery pack according to the present invention will be described with reference to fig. 1 to 15.
The battery pack 100 has a plurality of battery modules 110 (fig. 1 and 2). Also, the battery module 110 includes: at least one battery cell group (not shown); and a frame 120 that accommodates the battery cell group therein (fig. 1 and 2).
The battery cell group is an assembly of battery cells (not shown) having positive and negative electrode terminals, and the plurality of arranged battery cells are electrically connected via a conductive member (not shown). The battery cell has a cell body formed in a rectangular parallelepiped shape or a cylindrical shape, for example. In a rectangular parallelepiped battery cell, for example, positive and negative electrode terminals are disposed on 1 wall surface of a cell body, and positive and negative electrode terminals are disposed on 2 wall surfaces of the cell body that are disposed opposite to each other. In the cylindrical battery cell, positive and negative electrode terminals are disposed at both ends in the axial direction, respectively. The frame 120 is molded from an insulating material such as synthetic resin.
The battery pack 100 having the battery module 110 includes a battery state detection member for detecting the state of the battery cell (so-called battery state). The battery state detection member includes: a sensor (hereinafter, referred to as a "battery state detection sensor") that detects a battery state; and an electric wire electrically connected to the battery state detection sensor. The battery state detector is provided with a battery state detection sensor corresponding to a battery state to be detected. The battery pack 100 of this example has temperature detection pieces 130 (fig. 1 to 3) for detecting the temperature of the object of temperature measurement related to the battery cells as battery state detection pieces at a plurality of locations. Here, the temperature detection member 130 is provided at 2 locations. Each temperature detector 130 is connected to a battery monitoring unit (not shown) that monitors the battery state of the battery unit, and transmits detection information to the battery monitoring unit.
The temperature detector 130 includes a temperature sensor 131 for detecting the temperature of the temperature measurement target related to the battery cell as a battery state detection sensor (fig. 3). The temperature sensor 131 includes: a temperature measuring body 131a for detecting the temperature of the temperature measuring object; a base 131b for supporting the temperature measuring body 131 a; and a held body 131c for holding the protection device 1. In the temperature sensor 131, the temperature measuring body 131a, the base body 131b, and the held body 131c are arranged in this order on a straight line. Here, a thermistor that detects a temperature change from a change in resistance value is used as the temperature sensor 131. The temperature sensor 131 of this example detects the temperature of the gas discharged from the battery cell, and monitors the battery state of the battery cell based on the temperature of the gas.
Here, the base 131b is formed in a rectangular parallelepiped shape. The held body 131c includes: connected 3 rectangular flat plate-like wall portions 131d1、131d2、131d3(ii) a And a plurality of engaged portions 131e (fig. 3). Each wall portion 131d1、131d2、131d3Along the arrangement direction of the temperature measuring body 131a, the base body 131b, and the held body 131c (hereinafter, simply referred to as "arrangement direction"), an outer wall surface 131b of the base body 131b opposite to the temperature measuring body 131a1The 3 side portions of the frame are projected in the same direction. In the held body 131c, 2 wall portions 131d are arranged to face each other in a direction orthogonal to the arrangement direction1、131d2One engaged portion 131e is provided for each of the upper and lower portions. The engaged portions 131e extend from the respective wall portions 131d in the orthogonal direction1、131d2Projecting towards the outside. The engaged portion 131e in this example is formed in a claw shape that can be engaged with the opposite engagement partner in a direction orthogonal to the orthogonal direction and the arrangement direction。
Further, the temperature detecting member 130 has 2 wires 132 (fig. 3) drawn out from the temperature sensor 131. The wires 132 are arranged on the outer wall surface 131b of the substrate 131b1After being pulled out, the temperature sensor 131 is pulled out through the hole 131f of the held body 131 c. The hole 131f is defined by the wall portions 131d1、131d2、131d3A space portion formed inside.
The same temperature detection material is used for each of the temperature detection materials 130 at 2 locations. Although the temperature sensors 131 are identical in the respective temperature detectors 130, the lengths of the wires 132 may be different depending on the conditions of the wiring paths. Here, although the lengths of the wires 132 are different, the temperature detection members 130 are considered to be the same as long as the temperature sensors 131 are the same.
Each temperature detection member 130 is protected by the protection device 1 (fig. 1 and 2). The protection device 1 is a protection member that protects the same temperature sensor 131, and includes: a 1 st protector 10 (fig. 1 and 4 to 8) that holds and protects the temperature sensor 131 in a 1 st installation manner; and a 2 nd protector 20 (fig. 1, 2, and 9 to 14) that holds and protects the temperature sensor 131 in the 2 nd mounting manner. Specifically, the 1 st protector 10 protects one of the temperature detectors 130 at each of the 2 locations. Specifically, the 2 nd protector 20 protects the other of the temperature detectors 130 at each of the 2 locations. Although not shown, the 1 st protector 10 and the 2 nd protector 20 are mounted at predetermined positions (e.g., end plates) of the battery module 110, respectively.
First, the 1 st protector 10 will be explained.
The 1 st protector 10 has the 1 st sensor holding structure 11, and the 1 st sensor holding structure 11 holds and protects the temperature sensor 131 inserted in the 1 st insertion direction D1 orthogonal to the arrangement direction, and disposes the temperature sensor 131 at the 1 st temperature measurement position (fig. 4 to 7) with respect to the battery cells of the battery module 110. The 1 st inserting direction D1 is a direction orthogonal to the orthogonal direction and the arrangement direction shown earlier. In the assembled battery 100, the 1 st temperature measurement position is set in the 1 st flow path of the gas discharged from the battery cell. The 1 st protector 10 is provided with the 1 st sensor holding structure 11 so that the temperature sensor 131 is disposed in the 1 st flow path.
The 1 st sensor holding structure 11 includes the locking portion 12, and the locking portion 12 is disposed to face the locked portion 131e of the held body 131c in the opposite side of the 1 st insertion direction D1 after the insertion of the temperature sensor 131 is completed (fig. 4 to 7). The 1 st sensor holding structure 11 is provided with the locking portion 12 for each of the plurality of locked portions 131e of the temperature sensor 131.
Further, the 1 st protector 10 has the 1 st wire holding structure 13, and the 1 st wire holding structure 13 holds and protects the wires 132 (fig. 4 to 7) after being pulled out in the arrangement direction from the temperature sensors 131 held and protected by the 1 st sensor holding structure 11. The 1 st wire holding structure 13 is formed to hold and protect the wires 132 after being pulled out in the arrangement direction through the hole portion 131f of the held body 131c after being pulled out from the base body 131 b. The 1 st wire holding structure 13 is formed along the wiring path of the wire 132.
Specifically, the 1 st protector 10 of this example has: a housing member 30 that houses and holds the temperature sensor 131 and the electric wire 132; and a cover member 40 attached to the housing member 30 (fig. 4). The housing member 30 and the lid member 40 are formed of an insulating material such as synthetic resin. In the 1 st protector 10, the 1 st sensor holding structure 11 is provided in the housing member 30, and the 1 st wire holding structure 13 is configured by the housing member 30 and the cover member 40. Therefore, the accommodating member 30 has: a sensor housing body 31 constituting the 1 st sensor holding structure body 11; and a wire housing 32 constituting the 1 st wire holding structure 13 (fig. 4 to 7). The sensor accommodating body 31 and the wire accommodating body 32 are integrally formed.
The sensor housing body 31 is a portion that houses and holds the temperature sensor 131 in the housing member 30. The sensor accommodating body 31 has: a rectangular main wall 31 a; and a side wall 31b projecting in the same direction from 2 side portions of the main wall 31a that are disposed to face each other (fig. 5 and 5)7). In the sensor housing body 31, a space portion inside the sensor housing body, which is formed by the main wall 31a and the 2 side walls 31b, is used as a housing chamber 31c (fig. 5) of the temperature sensor 131. In the sensor housing body 31, an opening disposed to face the main wall 31a is used as an insertion port 31c of the temperature sensor 131 into the housing chamber 31c1(FIG. 5). Further, 2 openings each constituted by an end portion connected to the main wall 31a and the 2 side walls 31b are formed in the sensor accommodating body 31. The openings are arranged to face each other with a space therebetween in the arrangement direction, and one opening is used as the projection opening 31c of the temperature measuring body 131a2And the other is used as a drawing-out port 31c of the electric wire 1323(FIGS. 5 and 6). That is, in the sensor accommodating body 31, the temperature measuring body 131a is protruded from the protrusion opening 31c2The state of protruding to the outside accommodates the temperature sensor 131 in the accommodation chamber 31 c. In addition, the electric wire 132 is drawn out from the drawing-out port 31c3Is pulled out of the sensor accommodating body 31 and is guided to the electric wire accommodating body 32.
Here, in the sensor housing body 31, the notch portions 31d that communicate the housing chamber 31c with the outside are formed at 2 locations (fig. 5 to 7). One cutout portion 31d is formed by cutting out a part of a corner portion between the main wall 31a and the other side wall 31 b. The other cutout 31d is formed by cutting out a part of a corner between the main wall 31a and the other side wall 31 b. After the temperature sensor 131 is completely accommodated in the accommodating chamber 31c in each of the cutout portions 31d, the engaged portion 131e of the temperature sensor 131 is inserted. In this inserted state, the sensor housing body 31 is arranged such that the end surface of the cutout portion 31D and the engaged portion 131e of each side wall 31b face each other in the opposite side of the 1 st insertion direction D1. That is, in the sensor housing body 31, the temperature sensor 131 is held by using the end surface of the cutout portion 31d as the engaging portion 12 and disposing the engaging portion 12 to face the engaged portion 131e inserted into the cutout portion 31 d.
The engaging portion 12 and the engaged portion 131e are formed so that at least one of them has flexibility, and the claw-shaped engaged portion 131e can pass over the engaging portion 12 when the temperature sensor 131 is accommodated in the accommodating chamber 31 c. For example, the locked portion 131e may be provided byFlexible wall part 131d1、131d2Bent to contact the wall portion 131d1、131d2Are shifted together. The locking portion 12 may have flexibility.
The wire housing 32 is a portion for housing and holding the wire 132 in the housing member 30. The wire housing 32 includes: a main wall 32a formed along a wiring path of the 2 electric wires 132; and side walls 32b that protrude from both ends of the main wall 32a so as to extend along the extending direction of the main wall 32a (fig. 5 to 7). Further, the electric wire housing body 32 has partition walls 32c (fig. 5 and 6) that partition between the 2 side walls 32b along their extending direction at a plurality of places. In the wire housing 32, the openings disposed opposite to the main wall 32a are used as wire insertion ports 32d (fig. 5 and 6) for 2 wires 132. In the portion where the partition wall 32c exists, the wire insertion port 32d is divided into: an opening between the one side wall 32b and an end of the partition wall 32c on the side of the protruding direction; and an opening between the other side wall 32b and the end of the partition wall 32c on the side of the projecting direction, and the electric wire 132 is inserted from each opening.
In the wire housing 32, a holding portion 32e for holding the wired wire 132 is provided. The holding portions 32e are provided at the respective wire insertion ports 32d (fig. 8). The one holding portion 32e is formed as a cantilevered claw-shaped locking body protruding from the partition wall 32c toward the one side wall 32 b. The other holding portion 32e is formed as a cantilevered claw-shaped locking body protruding from the partition wall 32c toward the other side wall 32 b. Each holding portion 32e is formed such that the gap between the free end and the side wall 32b is narrower than the minimum dimension in the radial direction of the electric wire 132. The gap is set so that the electric wire 132 can be pushed into and inserted from the electric wire insertion port 32d and the electric wire 132 cannot be inserted therethrough in a state without an external force. The number of the holding portions 32e is determined according to the length of the electric wire housing body 32. In this example, the holding portions 32e are provided at a plurality of locations.
The cover member 40 is formed to be able to entirely or partially close the wire insertion port 32d of the wire accommodating body 32. The cover member 40 of this example is formed linearly so as to close the wire insertion port 32d in the linear portion of the wire accommodating body 32. The cover members 40 are attached to the linear portions of the plurality of portions of the wire housing 32. The cover member 40 is common to the 1 st protector 10 and the 2 nd protector 20.
The wire housing 32 and the cover member 40 are held by a holding mechanism using a claw-shaped engaged portion 32f provided on the side wall 32b of the wire housing 32 and an engaging portion 41 (fig. 8) provided on the cover member 40 and engaged with the engaged portion 32f in a state of closing the wire insertion port 32 d. The holding mechanism is provided at a plurality of locations.
Next, the 2 nd protector 20 will be described.
The 2 nd protector 20 has the 2 nd sensor holding structure body 21, and the 2 nd sensor holding structure body 21 holds and protects the temperature sensor 131 after insertion in the 2 nd insertion direction D2 along the arrangement direction, and disposes the temperature sensor 131 at the 2 nd temperature measurement position (fig. 9 to 12) with respect to the battery cells of the battery module 110. In the assembled battery 100, the 2 nd temperature measurement position is provided in the 2 nd flow path of the gas discharged from the battery cell. The 2 nd protector 20 is provided with a 2 nd sensor holding structure 21 for disposing the temperature sensor 131 in the 2 nd flow path.
The 2 nd sensor holding structure 21 has: a sensor accommodating body 23 having an insertion port 22 for the temperature sensor 131 and accommodating the temperature sensor 131 inserted from the insertion port 22; and a cover 24 for closing the insertion opening 22 (fig. 9 and 10).
Here, the sensor housing body 23 has the 1 st abutting portion 25, and the 1 st abutting portion 25 abuts against the temperature sensor 131 so as to sandwich the temperature sensor 131 between the 1 st abutting portion and the lid body 24 in the arrangement direction (fig. 9, 10, 12, and 13). The lid 24 has a 2 nd abutting portion 26, and the 2 nd abutting portion 26 abuts against the temperature sensor 131 so as to sandwich the temperature sensor 131 between the 2 nd abutting portion and the sensor housing 23 in the arrangement direction (fig. 14 and 15). That is, the 2 nd sensor holding structure 21 holds the temperature sensor 131 by sandwiching the temperature sensor 131 between the 1 st abutting part 25 of the sensor housing 23 and the 2 nd abutting part 26 of the cover 24. At least one of the 1 st contact portion 25 and the 2 nd contact portion 26 is formed to contact the engaged portion 131e of the temperature sensor 131.
Further, the 2 nd protector 20 has the 2 nd wire holding structure 27, and the 2 nd wire holding structure 27 holds and protects the electric wire 132 pulled out in the orthogonal direction with respect to the arrangement direction from the temperature sensor 131 held and protected by the 2 nd sensor holding structure 21 (fig. 9 to 12). The 2 nd wire holding structure 27 is formed to hold and protect the wire 132 after being pulled out in the direction orthogonal to the arrangement direction through the hole portion 131f of the held body 131c after being pulled out from the base body 131 b. The 2 nd electric wire holding structure 27 is formed along the wiring path of the electric wire 132.
Specifically, the 2 nd protector 20 of this example has: a housing member 50 that houses and holds the temperature sensor 131 and the electric wire 132; and cover members 40, 60 attached to the housing member 50 (fig. 9). The housing member 50 and the lid member 60 are formed of an insulating material such as synthetic resin. In the 2 nd protector 20, the sensor housing body 23 of the 2 nd sensor holding structure body 21 is provided in the housing member 50, and the lid body 24 of the 2 nd sensor holding structure body 21 is provided in the lid member 60. In addition, in the 2 nd protector 20, the accommodating member 50 and the cover members 40 and 60 constitute the 2 nd wire holding structure 27. Therefore, the accommodating member 50 has: the sensor accommodating body 23; and a wire housing body 51 (fig. 9 to 12) constituting the 2 nd wire holding structure body 27. The sensor accommodating body 23 and the electric wire accommodating body 51 are integrally formed.
The sensor accommodating body 23 has a cylindrical portion 23a (fig. 10 to 14) which accommodates the temperature measuring body 131a and the base body 131b therein along the arrangement direction. The cylindrical portion 23a has both ends open in the cylindrical axis direction, and one of the ends is used as a projection port 23a of the temperature measuring body 131a1(fig. 11 and 13), the other one is used as the insertion port 22 of the temperature sensor 131 (fig. 9 and 10).
The sensor housing body 23 has a flange portion 23b (fig. 9 to 13) provided at an end portion of the cylindrical portion 23a on the insertion port 22 side in the cylindrical axis direction. The sensor housing body 23 of this example uses the wall surface of the flange portion 23b thereof as the 1 st abutting portion 25, and abuts the engaged portion 131e of the temperature sensor 131 (fig. 10, 12, and 13). In the sensor accommodating body 23, after the temperature measuring body 131a and the base 131b are accommodated in the cylindrical portion 23a, the engaged portion 131e abuts against the 1 st abutting portion 25.
The wire housing 51 includes: a main wall 51a formed so as to follow the wiring path of the 2 electric wires 132; and side walls 51b that protrude from both ends of the main wall 51a so as to extend along the extending direction of the main wall 51a (fig. 10 to 12). Further, the electric wire housing body 51 has partition walls 51c (fig. 10) partitioning 2 side walls 51b at a plurality of places along their extending direction. In the wire housing 51, an opening disposed opposite to the main wall 51a is used as a wire insertion port 51d (fig. 10) for 2 wires 132. In the portion where the partition wall 51c exists, the wire insertion port 51d is divided into: an opening between the one side wall 51b and an end portion on the side of the protruding direction in the partition wall 51 c; and openings between the other side wall 51b and the end portion on the side of the protruding direction in the partition wall 51c, and the electric wires 132 are inserted from the respective openings.
The wire housing 51 is provided with a holding portion 51e (fig. 10) for holding the wired wire 132. The holding portions 51e are provided at the respective wire insertion ports 51 d. The one holding portion 51e is formed as a cantilevered claw-shaped locking body protruding from the partition wall 51c toward the one side wall 51 b. The other holding portion 51e is formed as a cantilevered claw-shaped locking body protruding from the partition wall 51c toward the other side wall 51 b. Each holding portion 51e is formed such that the gap between the free end and the side wall 51b is narrower than the minimum dimension in the radial direction of the electric wire 132. The gap is set so that the electric wire 132 can be pushed in and inserted from the electric wire insertion opening 51d and so that the electric wire 132 cannot be inserted therethrough without an external force. The number of the holding portions 51e is determined according to the length of the electric wire housing body 51. In this example, the holding portions 51e are provided at a plurality of locations.
The cover member 40 is the same as that used in the protector 1. Therefore, the cover members 40 are respectively attached to the straight line portions of the plurality of portions of the wire accommodating body 51 to close the wire insertion ports 51d in the straight line portions.
On the other hand, the cover member 60 is formed so as to be able to close the wire insertion port 51d on the sensor accommodating body 23 side of the insertion port 22 of the sensor accommodating body 23 and the wire accommodating body 51. In the cover member 60, a portion that closes the insertion port 22 side of the sensor housing body 23 is a cover body 24. As described above, the 2 nd abutting portion 26 is provided in the lid body 24. The 2 nd abutting part 26 of this example is formed as a bulging part (fig. 14 and 15) bulging from the lid body 24 toward the temperature sensor 131. When the cover member 60 is attached to the housing member 50, the 2 nd contact portion 26 contacts the temperature sensor 131. Based on this, the temperature sensor 131 is sandwiched by the 1 st abutting portion 25 of the sensor accommodating body 23 and the 2 nd abutting portion 26 of the cover body 24, and is accommodated and held by the 2 nd protector 20.
In the wire housing 51, a plurality of claw-shaped engaged portions 51f (fig. 10) are provided on the side wall 51b, as in the wire housing 32. Therefore, the wire housing 51 and the cover member 40 are held by a holding mechanism using the engaged portion 51f of the wire housing 51 and the engaging portion 41 of the cover member 40. On the other hand, the sensor accommodating body 23 is provided with a claw-shaped engaged portion 23c (fig. 10 to 12) similar to the engaged portion 51 f. The cover member 60 is provided with a locking portion 61 (fig. 10 to 12) similar to the locking portion 41. Therefore, the accommodating member 50 and the cover member 60 are held by a holding mechanism using the engaged portion 23c of the sensor accommodating body 23 and the engaging portion 61 of the cover member 60, and a holding mechanism using the engaged portion 51f of the wire accommodating body 51 and the engaging portion 61 of the cover member 60.
As described above, in the protection member 110, the temperature sensor 131 is held by disposing the locking portion 12 of the sensor housing body 31 to face the locked portion 131e of the temperature sensor 131. On the other hand, in the 2 nd protector 20, the temperature sensor 131 is sandwiched between the 1 st abutting portion 25 of the sensor housing 23 and the 2 nd abutting portion 26 of the cover 24, and the temperature sensor 131 is held. That is, in the protection device 1, the temperature sensor 131 is mounted differently in the 1 st protector 10 and the 2 nd protector 20. However, in this protection device 1, since the 1 st protector 10 and the 2 nd protector 20 respectively have such a holding structure of the temperature sensor 131, it is possible to use the same temperature sensor 131 in the 1 st protector 10 and the 2 nd protector 20. Therefore, in the battery pack 100, since the same effect as that of the protection device 1 can be obtained, even when the mounting direction of the temperature sensor 131 has to be changed, it is not necessary to change the kind of the temperature sensor for each mounting direction. Therefore, the protection device 1 and the battery pack 100 according to the present embodiment can reduce the cost price such as the reduction of the component management cost, along with the sharing of the temperature sensor 131 between the 1 st protector 10 and the 2 nd protector 20.
Claims (4)
1. A protection device is characterized in that a protection device is provided,
the protection device is a protection member for protecting the same temperature sensor in which a temperature measuring body, a base body, and a held body are arranged in a straight line in this order, and the protection device includes: a 1 st protector that holds and protects the temperature sensor in a 1 st mounting manner and a 2 nd protector that holds and protects the temperature sensor in a 2 nd mounting manner,
the 1 st protector has a 1 st sensor holding structure for holding and protecting the temperature sensor of the 1 st mounting method inserted in a 1 st insertion direction orthogonal to the arrangement direction, and the temperature sensor is disposed at a 1 st temperature measurement position of the battery module with respect to the battery cell,
the 2 nd protector has a 2 nd sensor holding structure body that holds and protects the temperature sensor of the 2 nd mounting aspect inserted in a 2 nd insertion direction along the arrangement direction, and disposes the temperature sensor at a 2 nd temperature measurement position of the battery module with respect to the battery cell,
the 1 st sensor holding structure is provided with a locking portion for each of a plurality of locked portions of the temperature sensor, the locking portion being disposed opposite to the locked portion of the held body in the 1 st insertion direction after completion of insertion of the temperature sensor,
the 2 nd sensor holding structure includes: a sensor accommodating body which has an insertion port for the temperature sensor and accommodates the temperature sensor inserted from the insertion port; and a cover body which closes the insertion opening,
the sensor housing body has a 1 st abutting portion that abuts the temperature sensor so as to sandwich the temperature sensor between the 1 st abutting portion and the cover body in the arrangement direction,
the cover body has a 2 nd abutting portion, the 2 nd abutting portion abuts the temperature sensor so as to sandwich the temperature sensor between the 2 nd abutting portion and the sensor housing body in the arrangement direction,
at least one of the 1 st abutting portion and the 2 nd abutting portion is formed to abut against the engaged portion.
2. The protection device of claim 1,
the 1 st protector is provided with the 1 st sensor holding structure so that the temperature sensor is disposed in a 1 st flow path of the gas discharged from the battery cell,
the 2 nd protector is provided with the 2 nd sensor holding structure so that the temperature sensor is disposed in a 2 nd flow path of the gas discharged from the battery cell.
3. The protection device according to claim 1 or 2,
the 1 st protector has a 1 st wire holding structure that holds and protects the electric wire pulled out in the arrangement direction from the temperature sensor held and protected by the 1 st sensor holding structure,
the 2 nd protector has a 2 nd wire holding structure body that holds and protects the wire drawn out in a direction orthogonal to the arrangement direction from the temperature sensor held and protected by the 2 nd sensor holding structure body.
4. A battery pack, comprising:
a plurality of battery modules including a plurality of battery cells therein; and
a protection device that protects a temperature sensor for detecting a temperature of a temperature measurement object related to the battery cell,
the protection device is a protection member for protecting the same temperature sensor in which a temperature measuring body, a base body, and a held body are arranged in a straight line in this order, and the protection device includes: a 1 st protector that holds and protects the temperature sensor in a 1 st mounting manner and a 2 nd protector that holds and protects the temperature sensor in a 2 nd mounting manner,
the 1 st protector has a 1 st sensor holding structure that holds and protects the temperature sensor of the 1 st mounting form inserted in a 1 st insertion direction orthogonal to the arrangement direction, and that arranges the temperature sensor at a 1 st temperature measurement position of the battery module with respect to the battery cell,
the 2 nd protector has a 2 nd sensor holding structure body that holds and protects the temperature sensor of the 2 nd mounting aspect inserted in a 2 nd insertion direction along the arrangement direction, and disposes the temperature sensor at a 2 nd temperature measurement position of the battery module with respect to the battery cell,
the 1 st sensor holding structure is provided with a locking portion for each of a plurality of locked portions of the temperature sensor, the locking portion being disposed opposite to the locked portion of the held body in the 1 st insertion direction after completion of insertion of the temperature sensor,
the 2 nd sensor holding structure includes: a sensor accommodating body which has an insertion port for the temperature sensor and accommodates the temperature sensor inserted from the insertion port; and a cover body which closes the insertion opening,
the sensor housing body has a 1 st abutting portion that abuts the temperature sensor so as to sandwich the temperature sensor between the 1 st abutting portion and the cover body in the arrangement direction,
the cover body has a 2 nd abutting portion, the 2 nd abutting portion abuts the temperature sensor so as to sandwich the temperature sensor between the 2 nd abutting portion and the sensor housing body in the arrangement direction,
at least one of the 1 st abutting portion and the 2 nd abutting portion is formed to abut against the engaged portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018108815A JP6843092B2 (en) | 2018-06-06 | 2018-06-06 | Protective device and battery pack |
| JP2018-108815 | 2018-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110571371A CN110571371A (en) | 2019-12-13 |
| CN110571371B true CN110571371B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910487625.8A Active CN110571371B (en) | 2018-06-06 | 2019-06-05 | Protection device and battery pack |
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| JP (1) | JP6843092B2 (en) |
| CN (1) | CN110571371B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3678214A1 (en) * | 2019-01-07 | 2020-07-08 | Andreas Stihl AG & Co. KG | Structure, battery pack and gardening and/or forestry system |
| JP7082154B2 (en) | 2020-03-31 | 2022-06-07 | 矢崎総業株式会社 | Protector and protector module |
| JP7211999B2 (en) | 2020-03-31 | 2023-01-24 | 矢崎総業株式会社 | Protector, wire leakage detection structure of protector, and protector module |
| JP7146836B2 (en) | 2020-03-31 | 2022-10-04 | 矢崎総業株式会社 | Protector and connector fixing structure to the protector |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2019212531A (en) | 2019-12-12 |
| JP6843092B2 (en) | 2021-03-17 |
| CN110571371A (en) | 2019-12-13 |
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