Battery measurement jig

Abstract

To effectively measure a performance of a plurality of batteries while reducing a human labor required for adjusting a position of a battery terminal.SOLUTION: A battery measurement jig 10 fixes a plurality of battery terminal connection parts 20 that can be moved to a flat bar 30 to an X-shaft direction and a Y-shaft direction, connects a battery terminal connection part 20 by using a fastening clamp 60 to a battery terminal 211, and evaluates a performance of a plurality of battery modules 210 at one time. The battery terminal connection part 20 includes: a battery terminal guide 21; a battery connection part base 22; and a probe 23. In the battery terminal guide 21, a taper shaped hole 21d is provided, and the battery terminal 211 is moved to the X-shaft direction and the Y-shaft direction in the battery terminal connection part 20 by using the taper shaped hole 21d as a guide, and a position deviation of the battery terminal connection part 20 and the battery terminal 211 can be adjusted. The probe 23 can be moved to a Z-shaft direction and can be surely contacted to the battery terminal 211.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a battery measuring tool and a temperature measuring tool that can efficiently measure the performance of a plurality of batteries while reducing the manual labor required for adjusting the positions of battery terminals. [Background technology]

[0002] Conventionally, there is known a technique for checking battery performance by charging and discharging a secondary battery during the manufacture of the secondary battery or the reuse of the secondary battery. For example, Patent Document 1 discloses a technique for a charging and discharging device for multiple secondary batteries, the charging and discharging device including a fixing jig capable of fixing the multiple secondary batteries, multiple charging and discharging probes capable of connecting to multiple electrode terminals of the multiple secondary batteries, and a contact mechanism capable of contacting the multiple charging and discharging probes to the multiple electrode terminals, and a sliding mechanism capable of sliding the multiple electrode terminals and the multiple charging and discharging probes together in a state in which the multiple charging and discharging probes are in contact with the multiple electrode terminals. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-186105 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the above-mentioned Patent Document 1, when multiple batteries are arranged, the multiple batteries must be aligned in advance so that the positions of the electrode terminals of each battery are uniform, which causes a problem in that advance preparation requires manual labor.

[0005] The present invention has been made to solve the problems (issues) associated with the above-mentioned conventional technology, and aims to provide a battery measurement tool and a temperature measurement tool that can efficiently measure the performance of multiple batteries while reducing the human labor required to adjust the position of battery terminals. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the present invention provides a battery measurement jig in which a plurality of battery terminal connections, including a battery terminal connection base having a probe that connects to a battery terminal that is part of a battery, and a battery terminal guide, are arranged on a flat bar, wherein the battery terminal guide is combined with the battery terminal connection base so as to be slidable in the direction of the battery terminal of the battery, and the battery terminal connection base is provided on the flat bar with a clearance so as to be able to move in a direction perpendicular to the direction of the battery terminal of the battery.

[0007] In addition, in the above invention, the battery terminal guide has a first elastic body that supports the battery terminal guide on the battery terminal connection base and a tapered hole that guides the battery terminal, the probe is provided with a second elastic body and is slidable in the direction of the battery terminal of the battery, the battery terminal connection base is attached to the flat bar with a first fastening member so as to create a gap between the flat bar and the battery terminal connection base, and a mounting hole provided in the flat bar or the battery terminal connection base is made larger in diameter than the first fastening member so that the first fastening member can move two-dimensionally in a direction perpendicular to the direction of the battery terminal.

[0008] In the present invention, in the above-mentioned invention, the battery terminal connection parts attached to the flat bar are connected to the battery terminals of the batteries at a constant pressure by fastening clamps.

[0009] In the present invention, in the above-mentioned invention, the battery terminal connection parts attached to the flat bar are connected to the battery terminals of the battery by a second fastening member.

[0010] In addition, in the present invention, for attaching the flat bar to the battery terminal connection base, the mounting hole on the flat bar side or the mounting hole on the battery terminal connection base side is elliptical with its major axis perpendicular to the stacking direction of the batteries and the direction of the battery terminals of the batteries.

[0011] In addition, in the above invention, before the battery terminal connection portion is connected to the battery terminal, the battery terminal side tip of the probe is located closer to the base of the battery terminal connection portion than the terminal side end of the battery terminal guide, and after the battery terminal is inserted into the tapered hole and the battery terminal guide comes into contact with the battery terminal, the probe connects to the battery terminal.

[0012] In addition, in the above invention, the present invention provides a connection judgment bar that is provided on the battery terminal connection base via a third elastic body, the battery terminal guide has a gauge, and the connection judgment bar inclines toward the battery terminal guide depending on the amount of pressure of the probe, and determines whether the probe is properly connected to the battery terminal based on the positions of the multiple connection judgment bars relative to the gauge from the stacking direction of the battery.

[0013] The present invention also relates to a battery measurement jig having a flat bar including a plurality of battery terminal connection parts, each of which has a probe for connecting with the battery terminals of a plurality of batteries that form a battery unit connected by a pair of connecting plates, in which the mounting position of the battery unit is positioned using a protrusion or screw hole provided on a battery unit fixing frame provided on a specified battery installation stand, a positioning plate provided on the flat bar is moved along the connecting plate to position the plurality of battery terminal connection parts that abut against the battery terminals of the plurality of batteries, and fastening clamps provided on the battery installation stand connect the battery terminals of the plurality of batteries to the probes of the plurality of battery terminal connection parts.

[0014] The present invention also relates to a temperature measuring tool in which a thermistor is slidably inserted into a temperature measuring hole of a battery module to measure the temperature of the battery module, the temperature measuring tool having an upper plate and a lower plate supporting the thermistor, the thermistor having a fourth elastic body and passing through an upper plate hole in the upper plate and a lower plate hole in the lower plate and being inserted into the temperature measuring hole of the battery module, the diameters of the upper plate hole and the lower plate hole being larger than the diameter of the thermistor so that the thermistor can move in a direction perpendicular to the sliding direction.

[0015] In the present invention, the diameter of the lower plate hole is larger than the diameter of the upper plate hole. Effect of the Invention

[0016] According to the present invention, the performance of a plurality of batteries can be efficiently measured while reducing the manual labor required for adjusting the positions of the battery terminals. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing an overview of a battery measuring tool according to the first embodiment. [Diagram 2] FIG. 2 is a diagram showing a system configuration of the battery measurement system according to the first embodiment. [Diagram 3] FIG. 3 is a diagram showing the configuration of the battery terminal connection portion shown in FIG. [Figure 4] FIG. 4 is a diagram for explaining the shape of the battery terminal guide shown in FIG. [Diagram 5] FIG. 5 is a diagram for explaining the shape of the battery terminal connection base shown in FIG. [Figure 6] FIG. 6 is a diagram for explaining the connection between the battery terminal connection portion and the flat bar. [Figure 7] FIG. 7 is a diagram for explaining the positioning of the battery unit and the flat bar. [Figure 8]FIG. 8 is a diagram for explaining the connection between the battery terminals of the battery module and the battery terminal connecting parts. [Figure 9] FIG. 9 is a diagram showing an outline of the temperature measuring tool. [Figure 10] FIG. 10 is a diagram showing an overview of the battery ID reading unit. [Figure 11] FIG. 11 is a diagram showing an overview of a connection determination section of a battery measuring tool according to a modified example. [Figure 12] FIG. 12 is a diagram showing an overview of a battery measuring jig according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a battery measurement jig and a temperature measurement jig according to the present invention will be described in detail with reference to the drawings.

[0019] [Embodiment 1] <Battery measurement fixture overview> First, an overview of the battery measurement jig according to the present embodiment 1 will be described. Fig. 1 is a diagram showing an overview of the battery measurement jig according to the present embodiment 1. The battery measurement jig is a jig used for collectively measuring the current-voltage characteristics of a battery unit 200 formed from a plurality of battery modules 210 (corresponding to "battery" in the claims).

[0020] As shown in FIG. 1, the battery measurement jig of embodiment 1 has a plurality of battery terminal connection portions 20, a flat bar 30, a positioning plate 35, a temperature measurement jig 40, a battery ID reading portion 50, a fastening clamp 60, a battery installation stand 70, and a battery unit fixing frame 201.

[0021] The battery unit 200 (not shown) is formed by a plurality of battery modules 210. Specifically, the battery unit 200 is formed by connecting the plurality of battery modules 210 using module connecting bars 230 and connecting plates 220.

[0022] The battery terminal connection part 20 is a connection part that is connected to a battery terminal 211 (not shown) of the battery module 210. The battery module 210 is charged and discharged with the battery terminal 211 connected to the battery terminal connection part 20. The battery terminal connection part 20 is also connected to a measuring instrument (digital multimeter 100, constant current power supply 110, etc.) for measuring the current-voltage characteristics of the battery module 210.

[0023] The battery terminal connection part 20 is composed of a battery terminal guide 21 and a battery terminal connection part base 22, not shown. The battery terminal connection part base 22 is attached to the flat bar 30 so as to be movable in the X-axis and Y-axis directions. This absorbs deviations in the mounting position of the battery terminals 211 of the battery module 210.

[0024] Furthermore, the battery terminal connection parts 20 are attached so as to be movable in the Z-axis direction in order to more reliably bring the probes 23, which are part of the battery terminal guide 21, into contact with the battery terminals 211 of the battery modules 210. The positioning plate 35 is a plate fixed to the flat bar 30, and by moving the positioning plate along the joining plate 220, the positions of the multiple battery terminal connection parts 20 that come into contact with the battery terminals 211 of the multiple battery modules 210, respectively, are determined.

[0025] The temperature measuring jig 40 includes a plurality of thermistors 41, and measures the temperatures of the plurality of battery modules 210 by each of the thermistors 41. The temperature measuring jig 40 has a battery ID imaging window 47 for imaging a two-dimensional barcode attached to the battery module 210. The temperature measuring jig 40 is attached to the upper part of the battery module 210 using a fixing hook 46.

[0026] The battery ID reading unit 50 reads the battery module ID of each of the multiple battery modules 210. Specifically, the battery ID reading unit 50 has multiple ID readers 51, and reads a two-dimensional barcode attached to the battery module 210 indicating an ID unique to the battery module 210.

[0027] The fastening clamps 60 press the multiple battery terminal connectors 20 connected to the flat bar 30 against the battery terminals 211 of the multiple battery modules 210 with a constant pressure. Here, the case where four fastening clamps 60 are used is shown. The battery installation stand 70 is a stand on which the battery unit 200 made up of multiple battery modules 210 is installed.

[0028] The battery unit fixing frame 201 is a frame for housing the battery unit 200 (not shown). The battery unit 200 (not shown) is attached to the battery unit fixing frame 201 using a battery unit positioning screw 240 and metal fittings provided on the connecting plate 220. The battery unit 200 may be attached by providing a protrusion on the battery unit fixing frame 201 and fitting it into a recess provided in the connecting plate 220.

[0029] <Battery measurement system configuration> Next, a system configuration of a battery measurement system that measures the current-voltage characteristics of the battery module 210 will be described. Fig. 2 is a diagram showing a system configuration of the battery measurement system according to the first embodiment. As shown in Fig. 2, the battery measurement system includes thermistors 41a, 41b, and 41c (hereinafter collectively referred to as "thermistors 41"), ID readers 51a and 51b (hereinafter collectively referred to as "ID readers 51"), digital multimeters 100a, 100b, and 100c (hereinafter collectively referred to as "digital multimeters 100"), constant current power supplies 110a, 110b, and 110c (hereinafter collectively referred to as "constant current power supplies 110"), a notebook PC 120, a data logger 130, and HUBs 140a, 140b, 140c, and 140d.

[0030] The battery unit 200 is composed of a plurality of battery modules 210a, 210b, and 210c (corresponding to the battery module 210 in FIG. 1). The battery module 210a is connected to a digital multimeter 100a for measuring the voltage and current at the battery terminal 211 of the battery module 210a, a constant current power source 110a for charging and discharging the battery module 210a, and a thermistor 41a for measuring the battery temperature of the battery module 210a, and the thermistor 41a is connected to a data logger 130. The battery modules 210b and 210c have a similar configuration.

[0031] The digital multimeter 100a is connected to the HUB 140c, and data measured by the digital multimeter 100a is transmitted to the notebook PC 120 via the LAN 150. The constant current power supply 110a is connected to the HUB 140d, and connected to the notebook PC 120 via the LAN 150. The data logger 130 is connected to the HUB 140b, and the temperature of the battery module 210a measured by the thermistor 41a is transmitted to the notebook PC 120 via the data logger 130, the HUB 140b, and the LAN 150.

[0032] The unique two-dimensional barcode attached to the battery modules 210a, 210b, and 210c is read by the ID reader 51a or the ID reader 51b, and is transmitted to the notebook PC 120 via the HUB 140a and the LAN 150.

[0033] The notebook PC 120 transmits a control signal for controlling the constant current power supply 110, and receives the current data and voltage data measured by the digital multimeter 100, the temperature data acquired by the data logger 130, and the ID data read by the ID reader 51. The notebook PC 120 can analyze the charge and discharge characteristics of the battery module 210 using the current data, voltage data, temperature data, and ID data.

[0034] <Configuration of battery terminal connection portion 20> Next, the configuration of the battery terminal connection part 20 will be described. Fig. 3 is a diagram showing the configuration of the battery terminal connection part 20 shown in Fig. 1. As shown in Fig. 3, the battery terminal connection part 20 has a battery terminal guide 21, a battery terminal connection part base 22, and a probe 23. The battery terminal guide 21 has a tapered hole 21d, a probe hole 21e, a guide groove 21h, and a guide retaining screw hole 21i.

[0035] The tapered hole 21d is a hole for adjusting the position of the battery terminal 211 of the battery module 210 and the battery terminal connection portion 20, and has a tapered shape that narrows from the top to the bottom of the battery terminal guide 21 (see FIG. 4(a)). The probe hole 21e is a hole for inserting the probe 23, and is a pair of through holes of the same diameter on both sides of the tapered hole 21d (see FIGS. 4(a) and 4(b)).

[0036] The guide groove 21h is a groove into which the guide protrusion 22f described below is fitted. The guide groove 21h allows the battery terminal connection portion base 22 to move in the Z-axis direction. The guide retaining screw hole 21i receives the guide retaining screw 21k. The guide retaining screw 21k is a screw that passes through the guide retaining screw hole 21i to prevent the guide protrusion 22f inserted into the guide groove 21h from coming off.

[0037] The battery terminal connection base 22 has a probe hole 22d and a guide protrusion 22f. The probe hole 22d is a through hole for inserting the probe 23. The guide protrusion 22f is a protrusion that is inserted into a guide groove 21h provided in the battery terminal guide 21 so that the battery terminal guide 21 moves along the guide groove 21h. When the guide protrusion 22f is inserted into the guide groove 21h, the battery terminal guide 21 is fitted into the battery terminal connection base 22.

[0038] The battery terminal guide 21 is supported by a battery terminal connection base 22 having a guide protrusion 22f, and has a guide groove 21h and a support spring 21c (corresponding to a first elastic body in the claims).

[0039] When the battery terminal guide 21 is fitted into the battery terminal connection base 22 and the battery terminal 211 is not in contact with the battery terminal guide 21, the guide protrusion 22f of the battery terminal connection base 22 is held in contact with the guide retaining screw 21k.

[0040] The probe 23 is inserted so as to penetrate through the probe hole 21e of the battery terminal guide 21 and the probe hole 22d of the battery terminal connection base 22, and tension is applied in the -Z axis direction by a probe spring 22k (corresponding to the second elastic body in the claims).

[0041] The probe 23 is held by a probe fixing nut 22e so as not to come off the battery terminal connection base 22. A cable 22h connected to a digital multimeter 100 and a constant current power supply 110 (not shown) is connected to the probe fixing nut 22e of the probe 23.

[0042] <Battery terminal guide 21 shape> Next, a description will be given of the shape of the battery terminal guide 21. Fig. 4 is a diagram for explaining the shape of the battery terminal guide 21 shown in Fig. 3. As shown in Fig. 4(a), a tapered hole 21d and a probe hole 21e are provided in the upper part of the battery terminal guide 21.

[0043] 4(b), the battery terminal guide 21 has a U-shape, and the tapered hole 21d is provided at a predetermined depth. The probe hole 21e is provided so as to penetrate the battery terminal guide 21. The battery terminal guide 21 has a support spring fixing protrusion 21g and a guide groove 21h on its inner side.

[0044] The support spring fixing protrusion 21g is a protrusion into which the support spring 21c is inserted. Also, there is a guide retaining screw hole 21i into which a guide retaining screw 21k is inserted to prevent the guide protrusion 22f provided on the battery terminal connection portion base 22 from coming off. The guide groove 21h of the battery terminal guide 21 is provided with a predetermined width in the center of the inner side of the battery terminal guide 21, as shown in FIG. 4(c).

[0045] <Shape of the battery terminal connection base 22> Next, a description will be given of the shape of the battery terminal connection base 22. Fig. 5 is a diagram for explaining the shape of the battery terminal connection base 22 shown in Fig. 3. As shown in Fig. 5, the upper surface of the battery terminal connection base 22 has a probe hole 22d, a guide protrusion 22f, and a support spring insertion hole 22g (see Fig. 5(a)).

[0046] As shown in Fig. 5(b), the probe hole 22d is provided so as to penetrate the upper convex portion of the battery terminal connection base 22. The guide protrusion 22f is a protrusion of a predetermined length. The support spring insertion hole 22g is a hole of a predetermined depth. Also, as shown in Fig. 5(c), a battery terminal connection base fixing hole 22i is provided on the bottom surface of the battery terminal connection base 22 for connection to a flat bar 30 (not shown).

[0047] <Connection between battery terminal connection portion 20 and flat bar 30> Next, the connection between the battery terminal connection part 20 and the flat bar 30 will be described. Fig. 6 is a diagram for explaining the connection between the battery terminal connection part 20 and the flat bar 30. As shown in Fig. 6(a), the battery terminal connection part 20, which is composed of the battery terminal guide 21 and the battery terminal connection part base 22, is connected using a bolt 31 (corresponding to the "first fastening member" in the claims), a nut 32, and a washer 33.

[0048] Specifically, the bolt 31 is inserted from the battery terminal connection part 20 side, a washer 33 is placed between the battery terminal connection part 20 and the flat bar 30, and the bolt 31 is connected from the flat bar 30 side using a nut 32. Here, the nut 32 is attached with a predetermined torque so that the battery terminal connection part 20 can move in the X-axis and Y-axis directions.

[0049] 6(b), the mounting holes 34 provided in the flat bar 30 are elliptical in shape and have a diameter larger than that of the bolts 31 so that the battery terminal connectors 20 can move in the X-axis and Y-axis directions. This elliptical shape has a major axis perpendicular to the stacking direction of the battery modules 210.

[0050] <Positioning of the Battery Unit 200 and the Flat Bar 30> Next, a description will be given of the positioning of the battery unit 200 composed of a plurality of battery modules 210 and the flat bar 30. FIG.

[0051] 7(a), the battery unit 200 is housed in a battery unit fixing frame 201 provided on a battery installation stand 70 (not shown), and is attached to the battery unit fixing frame 201 using a battery unit positioning screw 240 and metal fittings provided on the coupling plate 220. The battery unit 200 may also be attached by providing a protrusion on the battery unit fixing frame 201 and fitting it into a recess provided in the coupling plate 220.

[0052] 7(b), the flat bar 30 is placed at a predetermined position on the battery unit 200 using positioning plates 35a, 35b (corresponding to the positioning plate 35 in FIG. 1) attached to the flat bar 30. Specifically, the flat bar 30 including the battery terminal connection portion 20 can be placed at a predetermined position by moving the flat bar 30 along the two joining plates 220 on both sides of the battery unit 200 using the positioning plates 35a, 35b.

[0053] <Connection between the battery terminal 211 of the battery module 210 and the battery terminal connection portion 20> Next, a description will be given of the connection between the battery terminals 211 of the battery module 210 and the battery terminal connection part 20. Fig. 8 is a diagram for explaining the connection between the battery terminals 211 of the battery module 210 and the battery terminal connection part 20. Here, a description will be given of how to connect the battery terminals 211 of the battery module 210 and the connection part of the battery terminal connection part 20 when they are misaligned in the Y-axis direction.

[0054] 8(a), before the battery terminal connection part 20 (the battery terminal guide 21 and the battery terminal connection part base 22) is connected to the battery terminal 211 of the battery module 210, the battery terminal connection part 20 is shifted in the -Y-axis direction with respect to the battery terminal 211 of the battery module 210. In this state, the battery terminal side tip of the probe 23 is located closer to the battery terminal connection part base 22 than the terminal side end of the battery terminal guide 21.

[0055] 8(b), when the battery terminal connection part 20 is pressed into the battery terminal 211, the battery terminal 211 abuts on the tapered portion of the tapered hole 21d provided in the battery terminal guide 21, and the battery terminal connection part 20 moves in the +Y-axis direction along the tapered shape. When the battery terminal connection part 20 is further pressed into the battery terminal 211, the battery terminal connection part 20 moves further in the +Y-axis direction and the battery terminal 211 abuts on the bottom of the tapered hole 21d, and the misalignment between the battery terminal 211 and the battery terminal guide 21 in the Y-axis direction is adjusted, as shown in FIG.

[0056] Thereafter, when the battery terminal connection part 20 is further pressed in, as shown in Fig. 8(d), the battery terminal connection part base 22 is pressed in the direction of the battery terminal 211, and the probe 23 connects to the battery terminal 211. Here, the probe 23 connects to the battery terminal 211 with a predetermined pressure by the probe spring 22k attached to the probe 23.

[0057] <Overview of Temperature Measurement Tool 40> Next, an overview of the temperature measuring jig 40 shown in Fig. 1 will be described. Fig. 9 is a diagram showing an overview of the temperature measuring jig 40. As shown in Fig. 9, the temperature measuring jig 40 is equipped with a plurality of thermistors 41 in order to measure the temperature of each of the plurality of battery modules 210. The temperature measuring jig 40 is also provided with a battery ID imaging window 47 in order to read a two-dimensional barcode for individual identification attached to each battery module 210 by a battery ID reading unit 50 described later.

[0058] Fig. 9(b) is a cross-sectional view of the AA plane of Fig. 9(a). As shown in Fig. 9(b), the temperature measuring jig 40 has an upper plate 42, a lower plate 43, a plate fixing portion 44, and a compression spring 45 (corresponding to the "third elastic body" in the claims). The upper plate 42 has an upper plate hole 48 into which the thermistor 41 is inserted. The lower plate 43 has a lower plate hole 49 into which the thermistor 41 is inserted.

[0059] The thermistor 41 passes through the compression spring 45, the upper plate hole 48, and the lower plate hole 49, and is inserted into a temperature measurement hole (not shown) provided in the battery module 210. Here, the upper plate hole 48 provided in the upper plate 42 and the lower plate hole 49 provided in the lower plate 43 are holes with a diameter larger than that of the thermistor 41 so that the thermistor 41 can move in directions perpendicular to the insertion direction of the thermistor 41 (X-axis direction and Y-axis direction).

[0060] 9(c), in order to absorb any misalignment of the temperature measurement hole in the battery module 210, the diameter of lower plate hole 49 provided in lower plate 43 is made larger than the diameter of upper plate hole 48 provided in upper plate 42. The temperature measurement jig 40 is placed on top of module joining bar 230 that joins multiple battery modules 210 to form the battery unit 200, and is attached using fixing hooks 46 (not shown).

[0061] <Overview of Battery ID Reading Unit 50> Next, an overview of the battery ID reading unit 50 will be described. Fig. 10 is a diagram showing an overview of the battery ID reading unit 50. Here, for convenience of explanation, the temperature measurement tool 40 installed on the upper part of the battery module 210 is omitted.

[0062] 10, the battery ID reading unit 50 has a plurality of ID readers 51. The ID readers 51 are readers that read two-dimensional barcodes attached to the upper part of each battery module 210. Here, two ID readers 51 are provided to read the two-dimensional barcodes of the plurality of battery modules 210 that constitute the battery unit 200. For example, when 28 battery modules 210 constitute the battery unit 200, one ID reader 51 reads the two-dimensional barcodes of the 14 battery modules 210.

[0063] As described above, in the first embodiment, the battery measurement jig fixes the plurality of battery terminal connection parts 20 to the flat bar 30 so that the battery terminals 211 of the plurality of battery modules 210 constituting the battery unit 200 can be moved in the X-axis and Y-axis directions, and connects the battery terminal connection parts 20 to the battery terminals 211 using the fastening clamps 60 to simultaneously measure the current-voltage characteristics of the plurality of battery modules 210. In addition, the battery terminal connection part 20 has a battery terminal guide 21, a battery terminal connection part base 22, and a probe 23, and the battery terminal guide 21 is provided with a tapered hole 21d, and the battery terminal 211 moves the battery terminal connection part 20 in the X-axis and Y-axis directions using the tapered hole 21d as a guide, thereby adjusting the positional deviation between the battery terminal connection part 20 and the battery terminal 211. Furthermore, the probe 23 is configured to connect to the battery terminal 211 of the battery module 210 after correcting the positional misalignment between the battery terminal connection portion 20 and the battery terminal 211, thereby reducing the human labor required to adjust the position of the battery terminal 211 and efficiently measuring the performance of multiple batteries.

[0064] <Modification> Next, a modified example of the battery measuring jig will be described. Here, a case will be described in which each battery terminal connection portion 20 is provided with a connection determination portion 80, which allows the connection determination to be easily performed by the connection determination portion 80.

[0065] <Overview of connection determination unit 80> Fig. 11 is a diagram showing an overview of a connection determination section 80 of a battery measurement jig according to a modified example. Note that the same parts as those in the first embodiment are given the same reference numerals and detailed description thereof will be omitted. As shown in Fig. 11(a), the connection determination section 80 has a connection determination bar 81, a gauge 82, a torsion spring 83 (corresponding to the "fourth elastic body" in the claims), and a connection determination bar support section 84.

[0066] The connection judgment bar 81 is rotatably attached to the battery terminal connection part base 22 by a connection judgment bar support part 84. The connection judgment bar 81 is provided so that one end comes into contact with the lower part of the probe 23, and when the probe 23 is pressed in the Z-axis direction, the other end of the connection judgment bar 81 rotates so as to approach the battery terminal guide 21. When the battery terminal connection part 20 is not in contact with the battery terminal 211 of the battery module 210, the force of the torsion spring 83 causes the connection judgment bar 81 to be positioned away from the battery terminal guide 21.

[0067] 11(b), when the battery terminal guide 21 comes into contact with the battery terminal 211 of the battery module 210 and the battery terminal connection part base 22 is pressed into the battery terminal 211 side, the probe 23 comes into contact with the battery terminal 211 and the end face of the probe 23 opposite to the battery terminal side is projected inside the battery terminal connection part base 22. When the probe 23 is pushed out in the Z-axis direction inside the battery terminal connection part base 22, the connection judgment bar 81 of the connection judgment part 80 rotates about the connection judgment bar support part 84 as an axis so as to overlap with the gauge 82. When the probe 23 comes into proper contact with the battery terminal 211 of the battery module 210, the connection judgment bar 81 is located in the proper connection range 82a of the gauge 82.

[0068] 11(c), for example, when a foreign object 250 enters between the probe 23 and the battery terminal 211 of the battery module 210, the end face of the probe 23 opposite to the battery terminal side is further projected toward the inside of the battery terminal connection portion base 22. In this case, the connection judgment bar 81 of the connection judgment portion 80 further rotates about the connection judgment bar support portion 84 as an axis and is positioned outside the range of the proper connection range 82a of the gauge 82, and it is possible to confirm that the probe 23 is not properly connected to the battery terminal 211. It is possible to determine whether the multiple probes 23 are properly connected to the battery terminals 211 based on the positions of the multiple connection judgment bars 81 relative to the gauge 82 from the stacking direction (X-axis direction) of the battery module 210.

[0069] [Embodiment 2] In the above-mentioned embodiment 1, a case where the fastening clamp 60 is used to connect the battery terminal connecting portion 20 to the multiple battery terminals 211 of the multiple battery modules 210 is described, but in the embodiment 2, a case where the fixing bolt 61 and the fixing nut 62 are used to connect is described. Note that the same reference numerals are used to designate the same parts as in the embodiment 1, and detailed description thereof will be omitted.

[0070] Fig. 12 is a diagram showing an overview of a battery measurement jig according to embodiment 2. As shown in Fig. 12, the battery measurement jig according to embodiment 2 includes a plurality of battery terminal connectors 20, a flat bar 30, a positioning plate 35, a temperature measurement jig 40, a battery ID reader 50, a fixing bolt 61 (corresponding to a "second fastening member" in the claims), a fixing nut 62, a battery installation stand 70, and a battery unit fixing frame 201.

[0071] The flat bar 30 has a through hole through which a fixing bolt 61 passes, and a fixing nut 62 is used to connect the battery terminal connection portion 20 to the battery terminal 211 of the battery module 210 .

[0072] As described above, in this embodiment 2, the fixing bolt 61 is inserted into the through hole provided in the flat bar 30, and the battery terminal connection portion 20 is connected to the battery terminal 211 of the battery module 210 using the fixing nut 62, so that the space occupied by the entire battery measurement jig can be reduced.

[0073] The configurations illustrated in the above embodiments are merely functional schematics, and are not necessarily physically configured as illustrated. In other words, the form of distribution and integration of each device is not limited to that illustrated, and all or part of the devices can be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc. [Industrial Applicability]

[0074] The battery measurement jig and temperature measurement jig according to the present invention are suitable for efficiently measuring the performance of a plurality of batteries while reducing the manual labor required for adjusting the positions of battery terminals. [Explanation of symbols]

[0075] 20 Battery terminal connection 21 Battery terminal guide 21c Support spring 21d Tapered hole 21e, 21f Probe holes 21g Support spring fixing protrusion 21h Guide groove 21i Guide retaining screw hole 21k Guide retaining screw 22 Battery terminal connection base 22c Probe hole 22d Probe fixing nut 22e Guide protrusion 22f Support spring insertion hole 22g cable 22h Battery terminal connection base fixing hole 22i Probe Spring 23 Probe 30 Flat Bar 31 Volts 32 Nut 33 Washer 34 Mounting holes 35, 35a, 35b Positioning plate 40 Temperature measuring fixture 41, 41a, 41b, 41c Thermistor 42 Upper Plate 43 Lower Plate 44 Plate fixing part 45 Compression spring 46 Fixed hook 47 Battery ID imaging window 48 Top Plate Holes 49 Bottom Plate Hole 50 Battery ID reader 51, 51a, 51b ID reader 60 Fastening clamp 61 Fixing bolt 62 Fixing nut 70 Battery installation stand 80 Connection determination unit 81 Connection judgment bar 82 Gauge 82a Appropriate connection range 83 Torsion Spring 84 Connection judgment bar support part 100, 100a, 100b, 100c Digital Multimeter 110, 110a, 100b, 100c constant current power supply 120 Notebook PC 130 Data Logger 140a, 140b, 140c, 140d HUB 150 LAN 200 Battery Unit 201 Battery unit fixing frame 210, 210a, 210b, 210c Battery modules 211 Battery terminal 220 Binding Plate 230 Module Joint Bar 240 Battery unit positioning screw 250 Foreign matter

Claims

1. A battery measurement tool in which a plurality of battery terminal connections, each including a battery terminal connection base having a probe for connecting with a battery terminal that is a part of a battery, and a battery terminal guide, are arranged on a flat bar, the battery terminal guide is coupled to the battery terminal connection base so as to be slidable toward the battery terminal of the battery; The battery terminal connection base is provided on the flat bar with a clearance so that the battery terminal connection base can move in a direction perpendicular to the direction of the battery terminal of the battery. A battery measuring tool characterized by:

2. The battery terminal guide is a first elastic body that supports the battery terminal guide on the battery terminal connection portion base, and a tapered hole that guides the battery terminal; The probe comprises: a second elastic body is provided and is slidable in a direction toward the battery terminal of the battery; The battery terminal connection base is A first fastening member is attached to the flat bar so as to create a gap between the flat bar and the first fastening member, and a mounting hole provided in the flat bar or the battery terminal connection base is made larger in diameter than the first fastening member so that the first fastening member can move two-dimensionally in a direction perpendicular to the direction of the battery terminal.

2. The battery measuring tool according to claim 1 .

3. 2. The battery measuring jig according to claim 1, wherein the battery terminal connection parts attached to the flat bar are connected to the battery terminals of the batteries at a constant pressure by fastening clamps.

4. 2. The battery measuring jig according to claim 1, wherein the battery terminal connection parts attached to the flat bar are connected to the battery terminals of the battery by a second fastening member.

5. Regarding the attachment of the flat bar to the battery terminal connection base, The mounting hole on the flat bar side or the mounting hole on the battery terminal connection base side is an ellipse having a major axis perpendicular to the stacking direction of the batteries and the direction of the battery terminals of the batteries.

5. The battery measuring tool according to claim 3 or 4.

6. In a state before the battery terminal connection portion is connected to the battery terminal, The battery terminal side tip of the probe is located closer to the base of the battery terminal connection portion than the terminal side end of the battery terminal guide, and the battery terminal is inserted into the tapered hole, and the battery terminal guide comes into contact with the battery terminal, and then the probe connects to the battery terminal.

5. The battery measuring tool according to claim 3 or 4.

7. a connection determination bar is provided on the battery terminal connection base via a third elastic body; the battery terminal guide has a gauge; the connection determination bar is inclined toward the battery terminal guide in accordance with the amount of pressure applied by the probe; Whether or not the probe is properly connected to the battery terminal is determined based on the stacking direction of the battery and the positions of the plurality of connection determination bars relative to the gauge.

5. The battery measuring tool according to claim 3 or 4.

8. A battery measurement tool having a flat bar including a plurality of battery terminal connection portions each having a probe for connecting with a battery terminal of a plurality of batteries forming a battery unit connected by a pair of connecting plates, determining a mounting position of the battery unit using a protrusion or a screw hole provided in a battery unit fixing frame provided in a predetermined battery installation stand; a positioning plate provided on the flat bar is moved along the joining plate to position the battery terminal connection portions that respectively come into contact with the battery terminals of the batteries; The battery terminals of the batteries are connected to the probes of the battery terminal connection portions by fastening clamps provided on the battery installation base. A battery measuring tool characterized by:

9. A temperature measuring tool for measuring a temperature of a battery module, the thermistor being inserted by sliding into a temperature measuring hole of the battery module, the temperature measuring jig has an upper plate and a lower plate supporting the thermistor; the thermistor has a fourth elastic body, and is provided in the temperature measurement hole of the battery module through an upper plate hole provided in the upper plate and a lower plate hole provided in the lower plate; The diameters of the upper plate hole and the lower plate hole are made larger than the diameter of the thermistor so that the thermistor can move in a direction perpendicular to the sliding direction. A temperature measuring tool characterized by:

10. 10. The temperature measuring tool according to claim 9, wherein the diameter of the lower plate hole is larger than the diameter of the upper plate hole.

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