Temperature measuring unit, wiring module, and attachment structure of temperature measuring unit

Abstract

To position a temperature sensor with respect to a temperature measurement object with a simple configuration.SOLUTION: The temperature measuring unit 20 is a temperature measuring unit 20 for detecting a temperature of a temperature measurement object, and includes a temperature sensor 22, a temperature measuring wiring member connected to the temperature sensor 22, and a heat collecting plate 23 positioned with respect to the temperature sensor 22, in which the heat collecting plate 23 includes a contact portion that is in surface contact with the temperature measurement object and a first positioning portion that positions the heat collecting plate 23 with respect to the temperature measurement object.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a temperature measuring unit, a wiring module, and a mounting structure for the temperature measuring unit. [Background technology]

[0002] Electric vehicles and hybrid vehicles are equipped with a battery module comprising multiple battery cells as a power supply device. The battery module is fitted with a thermistor for monitoring the temperature of the battery cells. One known example of a structure for fitting a thermistor to a battery module is a structure in which a temperature detector holder is provided on an insulating cover attached to the battery module, and the thermistor is held by the temperature detector holder (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-90286 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above configuration, the thermistor is positioned relative to the battery module by a locking structure including a locking portion and a locking arm. However, it is preferable that the configuration for positioning the thermistor relative to the battery module be simplified. [Means for solving the problem]

[0005] The temperature measuring unit of the present disclosure is a temperature measuring unit for detecting the temperature of an object to be measured, and comprises a temperature sensor, a temperature measuring wiring member connected to the temperature sensor, and a heat collecting plate positioned relative to the temperature sensor, wherein the heat collecting plate has a contact portion that makes surface contact with the object to be measured and a first positioning portion that positions the heat collecting plate relative to the object to be measured. [Effects of the Invention]

[0006] According to the present disclosure, a temperature sensor can be positioned relative to an object to be measured using a simple configuration. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a plan view of the electricity storage module according to the first embodiment. [Figure 2] FIG. 2 is a perspective view showing a main part of the energy storage element. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along the line BB in FIG. [Figure 5] FIG. 5 is a plan view of the flexible printed circuit board and the temperature sensor. [Figure 6] FIG. 6 is a cross-sectional view of the electricity storage module according to the second embodiment. [Figure 7] FIG. 7 is a plan view of the temperature measuring unit mounting structure according to the third embodiment. [Figure 8] FIG. 8 is a cross-sectional view taken along line CC in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. [1] The temperature measuring unit of the present disclosure is a temperature measuring unit for detecting the temperature of an object to be measured, and comprises a temperature sensor, a temperature measuring wiring member connected to the temperature sensor, and a heat collecting plate positioned relative to the temperature sensor, wherein the heat collecting plate has a contact portion that makes surface contact with the object to be measured and a first positioning portion that positions the heat collecting plate relative to the object to be measured.

[0009] According to this configuration, by providing the first positioning portion on the heat collecting plate, the temperature sensor can be positioned relative to the object to be measured with a simple configuration.

[0010] [2] The wiring module of the present disclosure is a wiring module attached to a plurality of energy storage elements having electrode terminals, and comprises the temperature measurement unit of [1] above, a conductive member connected to the electrode terminals, and a wiring member electrically connected to the conductive member, wherein the conductive member is the object to be measured, and the conductive member has a second positioning portion that engages with the first positioning portion.

[0011] According to this configuration, the first positioning portion of the heat collecting plate and the second positioning portion of the conductive member are engaged with each other, so that the temperature sensor can be positioned relative to the conductive member.

[0012] [3] The wiring module of the present disclosure is a wiring module attached to a plurality of energy storage elements having electrode terminals, and comprises the temperature measuring unit of [1] above, a conductive member connected to the electrode terminals, a wiring member electrically connected to the conductive member, and a protector that holds the temperature measuring unit, the conductive member, and the wiring member, wherein the conductive member is the object to be measured, the protector has a third positioning portion that engages with the first positioning portion, and the conductive member has a fourth positioning portion that engages with the third positioning portion.

[0013] According to this configuration, the third positioning portion of the protector engages with the first positioning portion of the heat collecting plate and the fourth positioning portion of the conductive member, thereby enabling the temperature sensor to be positioned relative to the conductive member.

[0014] [4] In the above [2] or [3], it is preferable that the plurality of storage elements are arranged in a first direction, and the conductive member is positioned so as to be movable a predetermined amount in the first direction relative to the heat collection plate.

[0015] With this configuration, for example, when the plurality of energy storage elements expand or contract and the conductive member moves in the first direction, the heat collection plate can be prevented from shifting in the first direction, thereby preventing stress from being applied to the flexible printed circuit board to which the heat collection plate is fixed.

[0016] [5] In any one of the above [2] to [4], the storage element may be a laminated battery.

[0017] [6] The mounting structure of the temperature measuring unit disclosed herein is a mounting structure of the temperature measuring unit comprising the temperature measuring unit of [1] above and an object to be measured, wherein the object to be measured has a fifth positioning portion that engages with the first positioning portion.

[0018] According to this configuration, the first positioning portion of the heat collecting plate and the fifth positioning portion of the object to be measured are engaged with each other, so that the temperature sensor can be positioned relative to the object to be measured.

[0019] [Details of the embodiments of the present disclosure] The following describes embodiments of the present disclosure. The present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. In the drawings, for the sake of convenience, some components may be exaggerated or simplified. Furthermore, the dimensional ratios of the components may differ between drawings. In this specification, "orthogonal" does not only refer to a strict orthogonal relationship, but also includes a roughly orthogonal relationship within the scope of the operation and effect of the present embodiment.

[0020] <Embodiment 1> A first embodiment of the present disclosure will be described with reference to FIGS. 1 to 5. An energy storage module 1 including a wiring module 10 of this embodiment is mounted on a vehicle as a power source for driving the vehicle, such as an electric vehicle or a hybrid vehicle. In the following description, the direction indicated by arrow Z is defined as upward, the direction indicated by arrow X as forward, and the direction indicated by arrow Y as leftward. Note that, in some cases, when multiple identical components are shown, only some of the components will be designated by reference numerals, and the reference numerals for the other components will be omitted.

[0021] FIG. 1 is a plan view showing a portion of the energy storage module 1, including a main part of the energy storage module 1. The energy storage module 1 includes a plurality of energy storage elements 2 and a wiring module 10 attached to the plurality of energy storage elements 2. The plurality of energy storage elements 2 are arranged side by side in the front-to-rear direction (an example of a first direction). Furthermore, as shown in FIGS. 3 and 4, the energy storage module 1 includes a cover member 40 fixed to the plurality of energy storage elements 2.

[0022] As shown in FIG. 2, the energy storage device 2 includes a main body 3 and two electrode terminals 4. The main body 3 houses an energy storage element. The two electrode terminals 4 have opposite polarities. The energy storage device 2 of this embodiment is a laminated battery. The main body 3 has a flat shape. The electrode terminals 4 are disposed on both ends of the main body 3 in the extension direction. The electrode terminals 4 are plate-shaped. As shown in FIG. 1, the electrode terminals 4 are cut into an appropriate shape, bent, and connected to the wiring module 10.

[0023] (Wiring module 10) The wiring module 10 includes a conductive member 11, a wiring member 12, and a temperature measuring unit 20. In this embodiment, the conductive member 11 is a temperature measurement object whose temperature is detected by the temperature measuring unit 20. Note that not all of the conductive members 11 included in the wiring module 10 need to be temperature measurement objects. The wiring module 10 may further include a protector in which the conductive member 11, the wiring member 12, and the temperature measuring unit 20 are disposed.

[0024] (Conductive member 11) The conductive member 11 is made of a conductive metal. Examples of the metal that makes up the conductive member 11 include copper, copper alloy, aluminum, and aluminum alloy. The conductive member 11 has a plate shape. The conductive member 11 is connected to the electrode terminals 4 of the energy storage element 2. The conductive member 11 connects adjacent electrode terminals 4 to each other. As shown in FIGS. 3 and 4, the conductive member 11 has a positioning hole 11A (an example of a second positioning portion).

[0025] (Wiring member 12) 1, the wiring member 12 is electrically connected to the conductive member 11. The wiring member 12 in this embodiment is an electric wire. The wiring member 12 may be connected to the conductive member 11 via a small metal piece 13. For example, the small metal piece 13 and the conductive member 11 are connected by welding. For example, the wiring member 12 and the small metal piece 13 are connected by soldering or crimping.

[0026] The wiring member 12 functions as a voltage detection line. The end of the wiring member 12 opposite to the conductive member 11 is connected to an external device such as an ECU (Electronic Control Unit) via a connector or the like. The ECU is equipped with a microcomputer, elements, etc., and has a well-known configuration that has functions for detecting the voltage, current, temperature, etc. of each storage element 2, controlling the charging and discharging of each storage element 2, etc.

[0027] (Temperature measuring unit 20) 3 and 4, the temperature measuring unit 20 includes a temperature sensor 22, a flexible printed circuit board 21 (an example of a temperature measuring wiring member) connected to the temperature sensor 22, and a heat collecting plate 23 positioned relative to the temperature sensor 22. The temperature sensor 22 is mounted on the flexible printed circuit board 21. The heat collecting plate 23 is fixed to the flexible printed circuit board 21. The temperature measuring unit 20 of this embodiment also includes a biasing member 30 that biases the heat collecting plate 23 toward the object to be measured (the conductive member 11).

[0028] (Flexible Printed Circuit Board 21) 5, the flexible printed circuit board 21 includes a base film 21A, conductive paths 21B and 21C formed on the base film 21A, and a cover film 21D that covers the conductive paths 21B and 21C. The base film 21A and the cover film 21D are formed of, for example, an insulating synthetic resin. The conductive paths 21B and 21C are formed of copper foil or the like. Pads 21B1 and 21C1 are formed at the ends of the conductive paths 21B and 21C, respectively, and these pads 21B1 and 21C1 are arranged closely to each other. The cover film 21D has an opening 21D1 that exposes portions of the conductive paths 21B and 21C, including the pads 21B1 and 21C1.

[0029] (Temperature sensor 22) The temperature sensor 22 is, for example, a thermistor. A pair of electrodes 22A and 22B of the temperature sensor 22 is mounted on pads 21B1 and 21C1 of the conductive paths 21B and 21C, respectively. The conductive paths 21B and 21C are connected to, for example, the aforementioned ECU. The resistance value of the temperature sensor 22 is monitored by the ECU, thereby enabling the temperature of the conductive member 11 to be detected.

[0030] (heat collecting plate 23) The heat collecting plate 23 is made of metal. The metal constituting the heat collecting plate 23 is, for example, aluminum. As shown in FIGS. 3 and 4, the heat collecting plate 23 includes a plate portion 23A and a positioning protrusion 23B (an example of a first positioning portion) protruding from the plate portion 23A. The plate portion 23A is a substantially rectangular plate-like member. The plate portion 23A is adhered to the lower surface of the flexible printed circuit board 21 (base film 21A) with an adhesive. When viewed from the direction in which the heat collecting plate 23 and the flexible printed circuit board 21 are stacked (the up-down direction), the temperature sensor 22 is arranged so as to overlap the plate portion 23A. The plate portion 23A is a contact portion that makes surface contact with the conductive member 11. Heat generated from the conductive member 11 is transferred to the temperature sensor 22 via the heat collecting plate 23 (plate portion 23A).

[0031] The positioning protrusion 23B has, for example, a truncated cone shape. The positioning protrusion 23B is inserted into the positioning hole 11A of the conductive member 11. The positioning protrusion 23B engages with the inner wall of the positioning hole 11A, thereby positioning the heat collecting plate 23 relative to the conductive member 11. The heat collecting plate 23 is also fixed to the flexible printed circuit board 21 on which the temperature sensor 22 is mounted. Therefore, the temperature sensor 22 can be positioned relative to the conductive member 11. More specifically, the temperature sensor 22 can be positioned relative to the conductive member 11 in a direction (horizontal direction) perpendicular to the direction (up-down direction) in which the heat collecting plate 23 and the conductive member 11 make surface contact (face each other).

[0032] A gap S may be formed between the positioning protrusion 23B and the inner wall of the positioning hole 11A. It is preferable that this gap S particularly widens in the front-to-rear direction, which is the arrangement direction of the energy storage elements 2. With this configuration, the conductive member 11 can move in the front-to-rear direction relative to the heat collection plate 23 by the size of the gap S. It is known that the energy storage elements 2 expand or contract due to, for example, temperature changes. As a result, the conductive member 11 connected to the energy storage elements 2 is significantly displaced, particularly in the front-to-rear direction, which is the arrangement direction of the energy storage elements 2. Forming the gap S widening in the front-to-rear direction as described above prevents the heat collection plate 23 from interfering with the conductive member 11 and shifting in the front-to-rear direction, even if the conductive member 11 moves in the front-to-rear direction due to the expansion or contraction of the energy storage elements 2. This prevents stress from being applied to the flexible printed circuit board 21 to which the heat collection plate 23 is fixed, thereby preventing damage to the flexible printed circuit board 21.

[0033] The biasing member 30 includes a base portion 31, an elastic body 32, and a housing portion 33. The base portion 31 is fixed to the flexible printed circuit board 21 at a portion where the temperature sensor 22 is mounted. The base portion 31 is made of, for example, a synthetic resin. The base portion 31 is generally cylindrical. As shown in FIG. 4 , the base portion 31 includes a tubular portion 31A and an extension wall portion 31B connected to the tubular portion 31A. The lower end of the tubular portion 31A faces the flexible printed circuit board 21, and the temperature sensor 22 is disposed inside the tubular portion 31A. The tubular portion 31A has a protruding portion 31C protruding from its inner circumferential surface. The inside of the tubular portion 31A is filled with a sealing portion 34 to seal the protruding portion 31C and the temperature sensor 22. The sealing portion 34 is made of, for example, a hardening synthetic resin.

[0034] The extension wall portion 31B extends upward from the upper end of the tubular portion 31A. A pair of extension wall portions 31B are provided on the front and rear sides of the tubular portion 31A. The outer diameter of the extension wall portion 31B is larger than the outer diameter of the tubular portion 31A. The outer peripheral surfaces of the extension wall portion 31B and the tubular portion 31A are connected in a stepped manner via a locking portion 31D. The inner diameter of the extension wall portion 31B is larger than the inner diameter of the tubular portion 31A. The inner peripheral surfaces of the extension wall portion 31B and the tubular portion 31A are connected in a stepped manner via a pressing portion 31E.

[0035] 3 and 4, the elastic body 32 is a metal coil spring formed by spirally winding a metal wire such as SUS, and is elastically deformable in the vertical direction. The lower part of the elastic body 32 is housed in the internal space defined by the extension wall part 31B. The lower end part of the elastic body 32 is adapted to come into contact with the pressing part 31E.

[0036] The accommodation section 33 accommodates the base section 31 and the elastic body 32. The accommodation section 33 includes a ceiling wall 33A, a peripheral wall 33B extending from the outer edge of the ceiling wall 33A, and a support protrusion 33C protruding from approximately the center of the ceiling wall 33A. The support protrusion 33C supports the elastic body 32. As shown in FIG. 4, the peripheral wall 33B is partially cut out to form an elastic piece 33D that is elastically deformable relative to the peripheral wall 33B. A locking protrusion 33E that protrudes inward from the peripheral wall 33B is formed at the tip of the elastic piece 33D. The locking protrusion 33E is positioned so as to be able to lock with a locking portion 31D of the base section 31.

[0037] The biasing member 30 is assembled, for example, as follows. When the elastic body 32 is placed between the pair of extension wall portions 31B and the accommodation portion 33 is assembled to the base portion 31 from above, the elastic piece 33D elastically deforms and the upper portion of the base portion 31 enters the accommodation portion 33. When the locking projection 33E is positioned below the extension wall portion 31B, the elastic piece 33D elastically returns to its original state, and the locking projection 33E and the locking portion 31D face each other in the vertical direction and are arranged to be able to be locked. In this way, the base portion 31, the elastic body 32, and the accommodation portion 33 are assembled. When the locking projection 33E and the locking portion 31D are engaged with each other, the elastic body 32 is in its natural state or in a slightly contracted state.

[0038] As shown in FIGS. 3 and 4 , the biasing member 30 is pressed downward by the cover member 40 described above. The cover member 40 may be a housing that covers the multiple energy storage devices 2 or may be part of a protector for the wiring module 10. The cover member 40 is disposed above the multiple energy storage devices 2 and is positioned relative to the multiple energy storage devices 2. The cover member 40 presses the ceiling wall 33A of the accommodation section 33, moving the accommodation section 33 toward the base 31. The upper end of the elastic body 32 contacts the ceiling wall 33A, and the lower end of the elastic body 32 contacts the pressing portion 31E of the base 31, so that the elastic body 32 is compressed. That is, the elastic body 32 biases the base 31 downward by its resilient force. Therefore, the portion of the flexible printed circuit board 21 including the temperature sensor 22 and the heat collecting plate 23 fixed to that portion are pressed against the conductive member 11. Therefore, the conductive member 11 and the heat collecting plate 23 are in close contact with each other, and the thermal contact between the conductive member 11 and the heat collecting plate 23 is good, so that the temperature of the conductive member 11 can be detected by the temperature sensor 22 with high accuracy.

[0039] In this embodiment, instead of contacting the heat collecting plate 23 with the energy storage element 2, the heat collecting plate 23 is contacted with the conductive member 11. The heat collecting plate 23 (and the temperature sensor 22) is positioned relative to the conductive member 11. Because the conductive member 11 is connected to the electrode terminal 4 of the energy storage element 2, the temperature of the conductive member 11 is considered to be substantially the same as the temperature of the energy storage element 2. For example, by conducting an experiment, it is considered possible to estimate the temperature of the energy storage element 2 from the temperature of the conductive member 11. This configuration has the advantage that it is not necessary to provide a positioning feature on the energy storage element 2 to position the heat collecting plate 23. For example, when a laminated battery is used as the energy storage element 2, it may be difficult to provide a positioning feature on the main body 3 of the laminated battery, and therefore application of this embodiment is effective.

[0040] (Effects of the first embodiment) (1-1) The temperature measuring unit 20 according to the first embodiment is a temperature measuring unit 20 for detecting the temperature of an object to be measured (conductive member 11), and comprises a temperature sensor 22, a temperature measuring wiring member (flexible printed circuit board 21) connected to the temperature sensor 22, and a heat collecting plate 23 positioned relative to the temperature sensor 22, and the heat collecting plate 23 has a contact portion (plate portion 23A) that comes into surface contact with the object to be measured, and a first positioning portion (positioning protrusion portion 23B) that positions the heat collecting plate 23 relative to the object to be measured.

[0041] According to this configuration, by providing the first positioning portion on the heat collecting plate 23, the temperature sensor 22 can be positioned relative to the object to be measured with a simple configuration.

[0042] (1-2) The wiring module 10 according to the first embodiment is a wiring module 10 that is attached to a plurality of energy storage elements 2 having electrode terminals 4, and includes a temperature measurement unit 20, a conductive member 11 connected to the electrode terminals 4, and a wiring member 12 electrically connected to the conductive member 11, the conductive member 11 being the object to be measured, and the conductive member 11 having a second positioning portion (positioning hole 11A) that engages with the first positioning portion.

[0043] According to this configuration, the first positioning portion of the heat collecting plate 23 and the second positioning portion of the conductive member 11 are engaged with each other, so that the temperature sensor 22 can be positioned relative to the conductive member 11 .

[0044] (1-3) In the first embodiment, the energy storage devices 2 are arranged side by side in the first direction (front-rear direction), and the conductive member 11 is positioned relative to the heat collection plate 23 so as to be movable by a predetermined amount in the first direction.

[0045] With this configuration, for example, when the plurality of energy storage elements 2 expand or contract and the conductive member 11 moves in the first direction, it is possible to prevent the heat collection plate 23 from shifting in the first direction, and therefore it is possible to prevent stress from being applied to the flexible printed circuit board 21 to which the heat collection plate 23 is fixed.

[0046] (1-4) In the first embodiment, the energy storage device 2 is a laminated battery.

[0047] <Embodiment 2> A second embodiment of the present disclosure will be described with reference to FIG. 6. In the second embodiment, the same components as those in the first embodiment will be assigned the same reference numerals as those in the first embodiment, and descriptions thereof may be omitted. Furthermore, descriptions of effects that overlap with those in the first embodiment may be omitted. The energy storage module 101 according to the second embodiment includes a plurality of energy storage elements 2 and a wiring module 110. Furthermore, the energy storage module 101 includes a cover member 40.

[0048] (wiring module 110) 6 is a cross-sectional view of the power storage module 101 corresponding to FIG. 3 of the first embodiment. The wiring module 110 includes a conductive member 111, a wiring member 12 (see FIG. 1), a temperature measuring unit 120, and a protector 150 in which the conductive member 111, the wiring member 12, and the temperature measuring unit 120 are disposed. In this embodiment, the conductive member 111 is a temperature measurement object whose temperature is detected by the temperature measuring unit 120.

[0049] The temperature measuring unit 120 is configured similarly to the first embodiment except for the heat collecting plate 123. The heat collecting plate 123 has a plate portion 23A and a positioning hole 123B (an example of a first positioning portion) that penetrates the plate portion 23A. The positioning hole 123B is disposed at a position that does not overlap with the temperature sensor 22 when viewed from the top and bottom.

[0050] The conductive member 111 has a positioning hole 111A (an example of a fourth positioning portion) disposed at a position corresponding to the positioning hole 123B of the heat collecting plate 123.

[0051] The protector 150 has a conductive member mounting portion 151 in which the conductive member 111 is mounted. The conductive member mounting portion 151 is frame-shaped. The protector 150 includes a positioning protrusion 151A (an example of a third positioning portion) that protrudes from the bottom of the conductive member mounting portion 151. The positioning protrusion 151A is inserted into the positioning holes 123B and 111A. The positioning protrusion 151A engages with the inner walls of the positioning holes 123B and 111A, thereby positioning the heat collecting plate 123 relative to the conductive member 111. Therefore, the temperature sensor 22 can be positioned relative to the conductive member 111.

[0052] (Effects of the second embodiment) (2-1) The wiring module 110 of embodiment 2 is a wiring module 110 attached to a plurality of energy storage elements 2 having electrode terminals 4, and includes a temperature measuring unit 120, a conductive member 111 connected to the electrode terminals 4, a wiring member 12 electrically connected to the conductive member 111, and a protector 150 that holds the temperature measuring unit 120, the conductive member 111, and the wiring member 12, wherein the conductive member 111 is the object to be measured, the protector 150 has a third positioning portion (positioning protrusion 151A) that engages with the first positioning portion (positioning hole 123B), and the conductive member 111 has a fourth positioning portion (positioning hole 111A) that engages with the third positioning portion.

[0053] With this configuration, the third positioning portion of the protector 150 engages with the first positioning portion of the heat collecting plate 123 and the fourth positioning portion of the conductive member 111, thereby enabling the temperature sensor 22 to be positioned relative to the conductive member 111.

[0054] <Embodiment 3> A third embodiment of the present disclosure will be described with reference to FIGS. 7 and 8. In the third embodiment, the same components as those in the first embodiment will be assigned the same reference numerals as those in the first embodiment, and descriptions thereof may be omitted. Furthermore, descriptions of effects that overlap with those in the first embodiment may be omitted. As shown in FIG. 7, a mounting structure 201 for a temperature measuring unit 20 according to the third embodiment includes a temperature measuring unit 20 and a plurality of electric storage elements 202. The electric storage elements 202 are temperature measurement objects whose temperatures are detected by the temperature measuring unit 20. It is sufficient that at least one of the plurality of electric storage elements 202 is the temperature measurement object. Furthermore, as shown in FIG. 8, a cover member 40 is provided on the mounting structure 201 for the temperature measuring unit 20.

[0055] As shown in Fig. 7, the energy storage element 202 of this embodiment is a prismatic battery. The energy storage element 202 includes a rectangular parallelepiped main body 203 and two electrode terminals 204 provided on the upper surface of the main body 203. Although not shown in Fig. 7, the mounting structure 201 for the temperature measuring unit 20 may further include a conductive member connected to the electrode terminals 204, a wiring member connected to the conductive member, and a protector in which the conductive member, the wiring member, and the temperature measuring unit 20 are disposed.

[0056] As shown in Fig. 8, a positioning recess 203A (an example of a fifth positioning portion) recessed from the upper surface of the main body 203 is formed in the main body 203 of the energy storage element 202. The plate portion 23A of the heat collection plate 23 is in close contact with the upper surface of the main body 203. The positioning protrusion 23B of the heat collection plate 23 is housed in the positioning recess 203A. The positioning protrusion 23B engages with the inner wall of the positioning recess 203A, thereby positioning the heat collection plate 23 with respect to the energy storage element 202. Therefore, the temperature sensor 22 can be positioned with respect to the energy storage element 202.

[0057] (Effects of the Third Embodiment) (3-1) The mounting structure 201 for the temperature measuring unit 20 in embodiment 3 is a mounting structure 201 for the temperature measuring unit 20 that comprises the temperature measuring unit 20 and an object to be measured (a storage element 202), and the object to be measured has a fifth positioning portion (a positioning recess 203A) that engages with the first positioning portion (a positioning protrusion 23B).

[0058] According to this configuration, the first positioning portion of the heat collecting plate 23 engages with the fifth positioning portion of the object to be measured, thereby enabling the temperature sensor 22 to be positioned relative to the object to be measured.

[0059] (Other embodiments) The above-described first to third embodiments can be modified as follows: The above-described first to third embodiments and the following modifications can be combined with each other within the scope of technical compatibility.

[0060] In the first embodiment, the flexible printed circuit board 21 is used as an example of the temperature measurement wiring member, but the temperature measurement wiring member may be, for example, an electric wire. When the temperature measurement wiring member is an electric wire, the temperature sensor may be fixed to the heat collection plate via, for example, a thermally conductive insulating member.

[0061] In the first embodiment, the wiring member 12 is an electric wire, but the wiring member may be a circuit board. Also, the wiring member may be, for example, a flexible printed circuit board, which may also serve as the temperature measurement wiring member of the temperature measurement unit.

[0062] In the first to third embodiments, the biasing member 30 is provided, but the temperature measuring unit does not have to include a biasing member. For example, the heat collecting plate may be adhered to the object to be measured.

[0063] In the first embodiment, the conductive member 11 connects two adjacent electrode terminals 4, but the conductive member does not have to have the function of connecting multiple electrode terminals. For example, the multiple energy storage elements may have a joint formed by previously joining multiple electrode terminals, and the conductive member may be connected to the electrode terminal that constitutes the joint. [Explanation of symbols]

[0064] 1: Energy storage module 2: Energy storage element 3: Main body 4: Electrode terminal 10: Wiring module 11: Conductive material 11A: Positioning hole 12: Wiring components 13: Small metal piece 20: Temperature measurement unit 21: Flexible printed circuit board 21A: Base film 21B, 21C: Conductive path 21B1, 21C1: Pad 21D: Cover film 21D1:Aperture 22: Temperature sensor 22A, 22B: Electrode 23: Heat collection plate 23A: Board part 23B: Positioning protrusion 30: biasing member 31: Base 31A: Cylinder part 31B: Extension wall 31C:Protrusion 31D: Locking part 31E: Pressing part 32: Elastic body 33: Storage unit 33A: Ceiling wall 33B: Peripheral wall 33C: Support protrusion 33D: Elastic piece 33E: Locking protrusion 34: Sealing part 40: Cover member 101: Energy storage module 110: Wiring module 111: Conductive member 111A: Positioning hole 120: Temperature measurement unit 123: Heat collector plate 123B: Positioning hole 150: Protector 151: Conductive member arrangement section 151A: Positioning protrusion 201: Mounting structure of temperature measuring unit 20 202: Energy storage element 203: Main body 203A: Positioning recess 204: Electrode terminal S: Gap

Claims

1. A temperature measuring unit for detecting the temperature of an object to be measured, A temperature sensor; a temperature measuring wiring member connected to the temperature sensor; a heat collection plate positioned relative to the temperature sensor; The heat collection plate has a contact portion that comes into surface contact with the object to be measured, and a first positioning portion that positions the heat collection plate relative to the object to be measured.

2. A wiring module attached to a plurality of energy storage elements having electrode terminals, The temperature measuring unit according to claim 1; a conductive member connected to the electrode terminal; a wiring member electrically connected to the conductive member, The conductive member is the object to be measured, The conductive member has a second positioning portion that engages with the first positioning portion.

3. A wiring module attached to a plurality of energy storage elements having electrode terminals, The temperature measuring unit according to claim 1; a conductive member connected to the electrode terminal; a wiring member electrically connected to the conductive member; a protector that holds the temperature measuring unit, the conductive member, and the wiring member, The conductive member is the object to be measured, the protector has a third positioning portion that engages with the first positioning portion, the conductive member has a fourth positioning portion that engages with the third positioning portion.

4. The plurality of energy storage elements are arranged side by side in a first direction, The wiring module according to claim 2 or 3, wherein the conductive member is positioned so as to be movable by a predetermined amount in the first direction relative to the heat collecting plate.

5. 4. The wiring module according to claim 2, wherein the storage element is a laminated battery.

6. A mounting structure for a temperature measuring unit comprising the temperature measuring unit according to claim 1 and an object to be measured, The object to be measured has a fifth positioning portion that engages with the first positioning portion.

Images