JP2014163743A - Test device of storage battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology of reducing the electric power loss in wiring for electric power in testing a storage battery, in a test device of the storage battery.SOLUTION: The test device includes: a probe that is attached to a support base and is connected to the storage battery; a substrate that is mounted on the support base and is connected to the probe via wiring for electric power; and at least any one of a bi-directional DC-DC converter for charge/discharge, a DC-DC converter for charge, and a DC-DC converter for discharge that have an input/output voltage direct current of +60 V or less and -60 V or more and are connected to the substrate via a socket.

Description

  The present invention relates to a test apparatus for a storage battery such as a secondary battery or a capacitor.

  In recent years, lithium ion secondary batteries and the like are used in electric vehicles and mobile phones, and the demand for secondary batteries is increasing. In recent years, capacitors that apply the principle of the phenomenon of the electric double layer have been developed and commercialized, and it is conceivable to apply capacitors for powering electric vehicles or storing general commercial power. (For example, refer to Patent Document 1).

  In a charge / discharge test apparatus that evaluates the performance of rechargeable batteries such as secondary batteries and capacitors that have been researched and performs a charge / discharge test to evaluate safety, a power supply between a charge / discharge converter or the like and a storage battery Power wiring (cable) is connected to (see, for example, Patent Document 2).

JP 2010-182930 A JP 2004-282894 A

  However, when charging / discharging a storage battery such as a secondary battery or a capacitor with a large current, a power source such as a charging / discharging converter is often disposed at a location separated from the storage battery. For this reason, the power loss in the power wiring connected between the power source and the storage battery is a problem, and a large converter is used in anticipation of the power loss.

  An object of the storage battery testing apparatus disclosed herein is to provide a technique for reducing power loss in a power wiring when testing a storage battery.

  An apparatus for testing a storage battery according to one aspect includes a probe attached to a support base and connected to the storage battery, a substrate attached to the support base and connected to the probe via power wiring, and the substrate Input / output voltage DC + 60V or less, -60V or more bidirectional DC-DC converter for charging / discharging, DC-DC converter for charging, DC-DC converter for discharging It is characterized by that.

  According to the storage battery test apparatus disclosed in the present disclosure, it is possible to reduce the power loss in the power wiring when performing the storage battery test.

It is a perspective view of one embodiment of a test device. It is a side view of the test apparatus shown in FIG. It is a front view of the test apparatus shown in FIG. It is a side view of the test apparatus which shows the state which the mounting base of the test apparatus shown in FIG. 1 raised. FIG. 2 is an overall perspective view of a magazine mounted on a mounting table of the test apparatus illustrated in FIG. 1. FIG. 6 is a side view of the magazine shown in FIG. 5. FIG. 6 is a plan view of the magazine shown in FIG. 5. It is a top view of the test apparatus shown in FIG. It is a perspective view of the power supply part with which the support stand of the test apparatus shown in FIG. 1 is mounted | worn. FIG. 10 is a side view of the power supply unit shown in FIG. 9. FIG. 10 is a plan view of the power supply unit shown in FIG. 9. FIG. 10 is a rear view of the power supply unit illustrated in FIG. 9. It is a perspective view of the heat sink used for the power supply part shown in FIG. It is a front view of the heat sink used for the power supply part shown in FIG. It is a side view of the heat sink used for the power supply part shown in FIG. FIG. 10 is a perspective view of the power supply unit shown in FIG. 9 with the lid body removed from the casing body. It is a top view of the power supply part shown in FIG. It is a side view of the power supply part shown in FIG. It is a front view of the power supply part shown in FIG. It is a circuit block diagram of the test apparatus shown in FIG.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a perspective view of an embodiment of a test apparatus. 2 is a side view of the test apparatus shown in FIG. 1, FIG. 3 is a front view of the test apparatus shown in FIG. 1, and FIG. 4 is a view of the test apparatus showing a state where the mounting table of the test apparatus shown in FIG. A side view is shown.

  In FIG. 1 to FIG. 4, reference numeral 1 denotes a base of the test apparatus 3, and 5 denotes four support columns erected on the base 1. The columns 5 are, for example, cylindrical, and are attached to the base 1 via mounting brackets 7, two on the front side of the base 1 and two on the rear side of the base 1.

  As shown in FIG. 1, the mounting bracket 7 includes, as an example, a flat pedestal 9 that is mounted on the base 1 and a cylindrical mounting cylinder 11 that is integrally formed with the pedestal 9. The lower end of is inserted. The base 1 is formed in a substantially rectangular shape when viewed from a plane in which the four corners are obliquely cut.

  Above the base 1, a mounting base 13 through which the four columns 5 are inserted is arranged in parallel with the base 1 via a guide member 23 described later. A support base 15 is fixed in parallel to the mounting table 13 via a mounting bracket 17 at the tips of the four columns 5 inserted through the mounting table 13. As shown in FIG. 1, the mounting table 13 has a plate shape and has substantially the same shape as the base 1. As shown in FIG. 3, the support base 15 has a plate shape, and the width dimension (the width dimension in the left-right direction in the drawing of FIG. 3) is shorter than the mounting base 13.

  As shown in FIG. 2, the mounting bracket 17 includes a flat base 19 as an example to be attached to the back side of the support base 15 and a cylindrical mounting cylinder 21 formed integrally with the base 19. The upper end of the column 5 is inserted.

  Further, as shown in FIG. 1, four guide members 23 through which the support columns 5 are inserted are mounted on the mounting table 13, and the guide members 23 are attached to the mounting table 13 as an example and a ring-shaped base 25. And a cylindrical mounting cylinder 27 integrally formed with the pedestal 25. The mounting cylinder 27 is inserted into the column 5. Although not shown, the mounting table 13 is provided with an insertion hole through which the column 5 is inserted in the same manner as the mounting cylinder 27.

  As shown in FIGS. 2 to 4, an air cylinder 29 is attached to the center of the surface of the base 1, and the piston rod 31 of the air cylinder 29 is connected to the center of the back surface of the mounting table 13 as shown in FIG. 4. Yes. Then, when the piston rod 31 of FIG. 2 is retracted and the piston rod 31 is extended upward as shown in FIG. 4, the mounting table 13 is moved upward along the column 5 through which the guide member 23 is inserted. It has become.

  In this embodiment, the mounting table 13 is moved upward by the air cylinder 29 as described above. However, the support table 15 may be lowered by other driving means.

  As shown in FIGS. 1 to 4, a pair of elongated prismatic guide members 33 are mounted on the mounting table 13 in parallel with each other over the mounting table 13 in the front-rear direction (left-right direction in the drawing of FIG. 2). It has been. A resin magazine 37 in which a large number of secondary batteries 35 are accommodated is disposed between the two guide members 33.

  5 is a perspective view of the magazine 37 arranged on the mounting table 13 of the test apparatus 3 shown in FIG. 1, FIG. 6 is a side view of the magazine 37 shown in FIG. 5, and FIG. 7 is a side view of the magazine 37 shown in FIG. A plan view is shown.

  As shown in FIGS. 5 to 7, the magazine 37 has a pair of positive and negative electrodes 39, 41 protruding upward, and accommodates, for example, eight secondary batteries 35 in parallel in the longitudinal direction of the accommodating portion 43. In the rectangular box-shaped box member, the upper portion of the accommodating portion 43 is open. The secondary battery 35 has a thin rectangular shape, and a pair of electrodes 39 and 41 project in one direction from one side surface of the secondary battery 35.

  As shown in FIG. 7, a large number of partition walls 47 are provided at the bottom of the accommodating portion 43 in parallel with the front and rear side walls 45 of the accommodating portion 43 so as to protrude at equal intervals along the longitudinal direction of the accommodating portion 43. Further, concave guides for guiding the secondary battery 35 in the vertical direction are provided between the partition wall 47 and the partition wall 47 and on the left and right side walls 49 of the housing portion 43 between the partition wall 47 and the side wall 45. A groove 51 is provided.

  Therefore, the secondary battery 35 is inserted vertically into the guide groove 51 between the partition wall 47 and the partition wall 47 and the guide groove 51 between the partition wall 47 and the side wall 45 from above the housing portion 43. The secondary batteries 35 are accommodated in the magazine 37 in parallel with the electrodes 39 and 41 protruding upward.

  The magazine 37 in which a large number of secondary batteries 35 are accommodated in parallel as described above is inserted between the pair of guide members 33 from the front side of the test apparatus 3 as shown by arrows in FIG. Placed on. Although not shown, the mounting table 13 is provided with a stopper for positioning the magazine 37 inserted between the guide members 33 at a predetermined position.

  FIG. 8 shows a plan view of the test apparatus 3 shown in FIG. 9 is a perspective view of a power supply unit mounted on the support base 15 of the test apparatus 3 shown in FIG. 1, FIG. 10 is a side view of the power supply unit shown in FIG. 9, and FIG. 11 is a power supply shown in FIG. FIG. 12 is a rear view of the power supply unit shown in FIG.

  In FIG. 8, reference numeral 53 denotes two power supply units that are mounted on the support base 15 of the test apparatus 3 of FIG. 1, and 55 denotes a casing of the power supply unit 53.

  As shown in FIG. 9 to FIG. 12, the casing 55 is, for example, a long box-shaped casing body 55 a that is thicker and narrower than the secondary battery 35 and that opens at the top, and an opening at the top of the casing body 55 a. It is comprised with the cover body 55b which covers a part.

  As shown in FIGS. 1 and 8, the casing 55 of one power supply unit 53 is fixed to the left end of the support base 15 (upper part of the support base 15 in FIG. 8) with a bracket (not shown). Are fixed to the support table 15 by inclining downward from the left side of the test apparatus 3. Similarly, the casing 55 of the other power supply unit 53 is fixed to the right end of the support base 15 (lower part of the support base 15 in FIG. 8) via a bracket (not shown). The test apparatus 3 is fixed by being inclined downward from the right side of the test apparatus 3 to the support base 15.

  The two casings 55 are fixed to the support base 15 in this way. As shown in FIG. 3, when viewed from the front side of the test apparatus 3 (arrow side in FIG. 1), the two power supply units 53 are provided on the support base. 15 is arranged in a substantially V shape.

  As shown in FIG. 9, the cover 55b of the casing 55 has eight slots 57 corresponding to the eight secondary batteries 35 accommodated in the magazine 37 in a direction orthogonal to the longitudinal direction of the cover 55b. It is provided at equal intervals. In each slot 57, a DC / DC converter (Charge / Discharge Current) 59 for charging / discharging with a DC voltage input / output of, for example, + 60V or less and −60V or more, and DC / DC for charging. At least one of the converter 61 and the discharge DC-DC converter 63 is inserted. As an example, in this embodiment, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 each convert a 48V DC voltage into a 5V DC voltage (current value 25A). In the following description, the DC voltage is also referred to as DC (Direct Current).

  For example, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 are on-board power supply modules for a distributed power supply system, and are miniaturized cards having a board shape that is inserted into and removed from an edge connector (socket). Type power supply. For this reason, as a safety power supply, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 are set such that the input / output DC voltage is 60 V or less, for example.

  Safety standards such as UL (Underwriters Laboratories) standards and IEC (International Electrotechnical Commission) standards stipulate that voltages exceeding 60V DC voltage are dangerous voltages and require strict insulation treatment. Therefore, conversely, if the direct-current voltage is 60 V or less, the insulation process can be simplified.

  In addition, the standard requires a longer insulation distance for higher voltages. Therefore, high density is difficult in a circuit that handles a DC voltage exceeding 60V.

  In the present embodiment, the DC48V input from the DC-DC converter 113 is stepped down to DC5V by the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 as described later. High-density mounting of the DC-DC converter 59 and the like is possible.

  In addition, since the bidirectional DC-DC converter 59 and the like can be made non-insulated, a transformer is not necessary, and the insulation distance can be shortened, so that the motherboard 77 can be mounted with high density.

  As shown in FIGS. 8 to 12, a water-cooled heat sink 67 is thermally welded to a substrate (printed substrate) 65 of the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63.

  13 is a perspective view of the heat sink 67 used in the power supply unit 53 shown in FIG. 9, FIG. 14 is a front view of the heat sink 67 used in the power supply unit 53 shown in FIG. 9, and FIG. 15 is shown in FIG. The side view of the heat sink 67 used for the power supply part 53 is shown.

As shown in FIGS. 13 to 15, the heat sink 67 is a substantially T-shaped hollow aluminum block member as viewed from the front, and has a rectangular main body 69 and upper left and right sides of the main body 69 as viewed from the front. And an arm portion 71 protruding laterally from the side. A cooling water inflow pipe 73 is attached to the lower part of one arm part 71 along the side surface of the main body part 69, and a cooling water outflow pipe 75 is provided to the lower part of the other arm part 71 along the side surface of the main body part 69. Accordingly, a cooling water channel is formed in the heat sink 67 from the inflow pipe 73 to the outflow pipe 75.

  Then, when a bidirectional DC-DC converter 59 or the like is inserted into the slot 57 as shown in FIG. 9 and is electrically connected to a socket of a mother board to be described later in the casing 55, the bottom of the main body 69 is placed as shown in FIG. It contacts the surface of the lid 55b of the casing 55.

  16 is a perspective view of the power supply unit 53 shown in FIG. 9 with the lid 55b removed from the casing body 55a, FIG. 17 is a plan view of the power supply unit 53 shown in FIG. 16, and FIG. 18 is a power supply unit 53 shown in FIG. FIG. 19 is a front view of the power supply unit 53 shown in FIG.

  16 and 17, reference numeral 77 denotes a motherboard mounted in the casing body 55a. The motherboard 77 is an example of a substrate. As shown in FIGS. 17 to 19, a plurality of sockets 79 are mounted on the motherboard 77 corresponding to the slots 57 in FIG. 9, and the contact portions of the board 65 of the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 are mounted. Is inserted into the slot 57 and electrically connected to the socket 79.

  As shown in FIG. 16, a cooling water channel 81 for cooling the mother board 77 is piped in a substantially U shape when viewed from the top, and the cooling water channel 81 is provided on the back side of the casing body 55a. Are connected to a multi-connector 83 mounted on the side surface of the.

  As shown in FIG. 12, in addition to the output terminal 85, the voltage detection terminal 87, and the control signal terminal 89, the multi-connector 83 is equipped with a cooling water inflow coupler 91 and an outflow coupler 93. An inlet and an outlet (not shown) of the cooling water channel 81 are connected to the outlet coupler 93. Then, piping (not shown) is connected to the inflow coupler 91 and the outflow coupler 93 from the outside, and the cooling water pumped from the external pump (not shown) to the power supply unit 53 flows down the cooling water channel 81. Then, the motherboard 77 is cooled.

  As shown in FIG. 16, the motherboard 77 is provided with a pair of circular small holes 95 for each socket 79 shown in FIG. A coupler 97 attached to 81 protrudes upward. Further, as shown in FIG. 9, the lid 55b is also provided with a circular small hole 99 having the same diameter as the small hole 95 in correspondence with the small hole 95 of the mother board 77, and the coupler 97 further extends upward from each small hole 99. Protruding to Then, as shown in FIG. 9, when the charge / discharge bidirectional DC-DC converter 59 is inserted into the slot 57 and connected to the socket 79 (FIG. 18), the inflow pipe 73 and the outflow pipe 75 of the heat sink 67 are connected to the coupler 97. The cooling water channel 81 and the cooling water channel in the heat sink 67 communicate with each other.

  In this way, when the cooling water channel 81 on the mother board 77 side and the cooling water channel in the heat sink 67 communicate with each other, a part of the cooling water flowing into the cooling water channel 81 flows down the cooling water channel in the heat sink 67 and is charged and discharged bidirectionally. The DC-DC converter 59, the charging DC-DC converter 61, and the like are cooled.

  As described above, on the mounting table 13 of the test apparatus 3 shown in FIG. 1, the magazine 37 in which a maximum of eight secondary batteries 35 are stored in the storage portion 43 is mounted at a predetermined position as shown in FIG. .

  Therefore, as shown in FIGS. 1, 2, and 8, the support table 15 positioned above the mounting table 13 corresponds to the electrodes 39 and 41 (FIG. 3) of the secondary battery 35 on the magazine 37 side. Eight probes 101 for positive and negative electrodes are elastically inserted via springs 103 (FIG. 2). When the electrodes 39 and 41 and the probe 101 are separated as shown in FIG. 2 and the piston rod 31 extends upward as shown in FIG. 4 and the mounting table 13 is moved upward by a predetermined amount, the electrodes 39 and 41 are moved. And the probe 101 are in contact with one each.

  Further, two adjacent sockets 79 are connected to the motherboard 77 of each power supply unit 53 in parallel by a pattern (not shown), and each pattern has a positive power cable 105 and a negative electrode shown in FIG. The power cable 107 is connected. The power cables 105 and 107 are examples of power wiring.

  As shown in FIGS. 1 and 8, in the present embodiment, as an example, eight probes 101 inserted on the left side of the support base 15 (upper side of the support base 15 in FIG. 8) are connected to the positive electrode from the motherboard 77. One power cable 105 is connected to each one. Similarly, one negative power cable 107 is connected from the mother board 77 to each of the eight probes 101 inserted on the right side of the support base 15 (the lower side of the support base 15 in FIG. 8). .

  Therefore, when the magazine 37 in which the secondary batteries 35 are accommodated in parallel is placed on the mounting table 13 as shown in FIGS. 2 and 3, the secondary is aligned with the positive probe 101 and the negative probe 101. A positive electrode 39 and a negative electrode 41 of the battery 35 are arranged.

  Thus, the test apparatus 3 can use two slots 57 (FIG. 9) adjacent to one secondary battery 35. That is, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 can be attached to the two slots 57 (FIG. 9) for one secondary battery 35 according to the specifications and applications. It is like that.

  FIG. 20 shows a circuit block diagram of the test apparatus 3 shown in FIG. FIG. 20 shows an example in which the directional DC-DC converter 59 and the DC-DC converters 61 and 63 are mounted singly or in combination on one of the pair of power supply units 53 of the test apparatus 3 shown in FIG. Yes. A circuit block diagram on the other side of the pair of power supply units 53 of the test apparatus 3 is omitted.

  As described above, the test apparatus 3 can use two adjacent slots 57 (FIG. 9) for one secondary battery 35 accommodated in the magazine 37. Therefore, in FIG. 20, as an example, one bidirectional DC-DC converter 59 is connected to one slot 57 of the power supply unit 53 for one secondary battery 35-1 accommodated in the magazine 37 (FIG. 5). (FIG. 9). Then, one DC-DC converter 61 is inserted into one slot 57 (FIG. 9) of the power supply unit 53 for the other secondary battery 35-2 accommodated in the magazine 37 (FIG. 5). .

  Further, with respect to the secondary batteries 35-3 and 35-4 accommodated in the magazine 37 (FIG. 5), for every two slots 57 (FIG. 9) corresponding to the secondary batteries 35-3 and 35-4, A DC-DC converter 61 and a DC-DC converter 63 are inserted respectively.

  Next, the electrical connection state of the circuit block diagram of FIG. 20 will be described. A power supply wiring (not shown) from the main power supply is connected to the input terminal of the regenerative inverter 109. For example, the regenerative inverter 109 converts a 200V AC voltage from the main power source to DC340V, and outputs the converted DC340V from the output terminal. In the following description, the AC voltage is also referred to as AC (Alternating Current).

  The output terminal of the regenerative inverter 109 is connected to the input terminal of the bidirectional DC-DC converter 113 via the power supply wiring 111. The DC-DC converter 113 steps down the DC 340V received from the regenerative inverter 109 to 48V DC and outputs it from the output terminal. The output terminal of the DC-DC converter 113 is connected to the multi-connector 83 (FIG. 8) of the power supply unit 53 via the power supply wiring 115.

  Then, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 attached to the power supply unit 53 step down the DC48V input to DC5V for a charge / discharge test, and each probe 101 (secondary battery). 35 side) at 5VDC and 25A.

  The test apparatus 3 according to the present embodiment has such a structure. When the secondary battery 35 is tested, first, the secondary battery 35 is accommodated in a magazine 37 in parallel as shown in FIG. Then, the magazine 37 in which the secondary battery 35 is accommodated is placed on the mounting table 13 of the test apparatus 3 as shown in FIG.

  On the other hand, depending on the test specification and application, a maximum of two bidirectional DC-DC converters 59, DC-DC for each secondary battery 35 are provided for every two slots 57 (FIG. 9) as shown in FIG. DC converters 61 and 63 are appropriately inserted. Accordingly, as shown in FIG. 9, the inflow pipe 73 and the outflow pipe 75 of the heat sink 67 attached to the bidirectional DC-DC converter 59 and the like are connected to the coupler 97, and the inside of the cooling water channel 81 and the heat sink 67 on the mother board 77 side. The cooling water channel is connected.

  After that, as shown in FIG. 20, the power supply wiring 115 from the DC-DC converter 113 is connected to the multi-connector 83 (FIG. 8) of the power supply section 53, and the piping for cooling water (not shown) from the outside is connected to the multi-connector 83. Connected.

  When the electrodes 39 and 41 and the probe 101 are separated from each other as shown in FIG. 2 and the piston rod 31 extends upward and the mounting table 13 moves upward by a predetermined amount as shown in FIG. 39 and 41 and the probe 101 contact each one.

  Thereafter, when the main power supply is turned on, AC200V from the main power supply is converted to DC340V by the regenerative inverter 109, and DC340V is stepped down to DC48V by the DC-DC converter 113. Then, the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 mounted on the power supply unit 53 step down the DC48V input to DC5V for charge / discharge test, and each probe 101 (secondary battery 35). Is output at DC5V, 25A.

  As shown in FIG. 20, in this embodiment, for example, one charge / discharge bidirectional DC-DC converter 59 is inserted into one slot 57 (FIG. 9) for the secondary battery 35-1, and the secondary battery 35-1. One charging DC-DC converter 61 is inserted into one slot 57 (FIG. 9) for the battery 35-2. Therefore, DC5V and 25A are output from the bidirectional DC-DC converter 59 and the DC-DC converter 61 to the secondary battery 35-1 and the secondary battery 35-2, respectively.

  On the other hand, with respect to the secondary batteries 35-3 and 35-4, two DC-DC converters 61 and a DC-DC converter 63 are inserted into two slots 57 (FIG. 9). Therefore, DC5V and 50A are output to the secondary batteries 35-3 and 35-4 from the DC-DC converter 61 and the DC-DC converter 63, respectively.

  As described above, one DC-DC converter 61 is inserted into one slot 57 (FIG. 9), and DC5V and 25A are output to the secondary battery 35-2. However, if, for example, the secondary battery 35-2 requires a DC5V, 50A output in response to the customer's request, a single charging DC-DC converter 61 is provided in the remaining slot 57 (FIG. 9). Can be inserted. As a result, it is possible to output DC 5V, 50A using the two DC-DC converters 61.

  Furthermore, by using two bidirectional DC-DC converters 59 and DC-DC converters 61 and 63 alone or in combination in each slot 57 (FIG. 9) of the power supply unit 53, various test specifications can be used. It is possible to respond to changes in usage.

  When an external pump (not shown) is operated and cooling water is pumped to the power supply unit 53, the cooling water flows down the cooling water channel 81 to cool the motherboard 77 and cool the heat sink 67. Cooling water flows down the water channel and the charge / discharge bidirectional DC-DC converter 59 and the like are cooled.

  As described above, in the test apparatus 3 of FIG. 1, the power source 53 using the bidirectional DC-DC converter 59 or the like is mounted on the support base 15 closest to the probe 101, so that the power source is separated from the secondary battery. The power cables 105 and 107 can be shortened as compared with the conventional arrangement.

  In addition, since the power cables 105 and 107 can be shortened in this way, the power cables 105 and 107 can be easily routed, so that the power cables 105 and 107 can be made thicker than before.

  Therefore, according to the test apparatus 3 according to the present embodiment, when performing the test of the secondary battery 35, the power loss in the power cables 105 and 107 can be reduced and the inductance can be reduced. Has the advantage of being faster.

  Such power loss can be reduced by reducing the DC48V to DC5V by the power supply 53 as shown in FIG. 20, and the DC5V, 25A per unit from the bidirectional DC-DC converter 59, the DC-DC converter 61, etc. Is output to the probe 101 (secondary battery 35-1, etc.).

  That is, if the voltage decreases, the current increases accordingly, so that the DC 48V input is stepped down to DC 5V by the power supply unit 53 and the DC 5V, 25A per unit is output from the bidirectional DC-DC converter 59 or the like. The current input from the DC-DC converter 113 to the power supply unit 53 is 2.5 A.

  This is compared with the conventional structure in which 25 A is input to the probe from the power supply for charging / discharging, in this embodiment, the power supply unit 53 using the bidirectional DC-DC converter 59 for charging / discharging is used. Since it can be wired at 5A, power loss can be reduced compared to the conventional case.

  Further, by adopting a miniaturized card type power supply device using the substrate 65 such as the bidirectional DC-DC converter 59 and the DC-DC converter 61, the test apparatus 3 can be miniaturized, and for charging and discharging. These combinations are free and a redundant configuration is also possible.

  Further, as described above, since the bidirectional DC-DC converter 59 and the DC-DC converters 61 and 63 can be made non-insulated, the insulation distance can be shortened, so that the bidirectional DC-DC converter 59, The DC-DC converters 61 and 63 can be mounted with high density.

  Furthermore, since the motherboard 77 and the bidirectional DC-DC converter 59 are cooled by the cooling water, the reliability of the power supply unit 53 can be improved, and the power supply unit 53 can be used favorably over a long period of time.

  In the test apparatus 3 shown in FIGS. 1 to 20, a water cooling type cooling means using a heat sink 67 shown in FIG. 13 is adopted as means for cooling the bidirectional DC-DC converter 59, the DC-DC converter 61 and the like. However, air cooling type cooling means may be used instead of such cooling means.

  For example, the cooling pipe does not flow through the heat sink 67 in FIG. 13 and the inflow pipe 73 and the outflow pipe 75 are omitted. For example, an aluminum heat sink is thermally welded to the substrate 65 such as the bidirectional DC-DC converter 59 to air-cool the heat sink. You may make it function as a radiator of a type.

  Further, as a means for cooling the bidirectional DC-DC converter 59 and the like, although not shown, the arm portion 71 of the heat sink 67 in FIG. You may make it function as a medium.

  Moreover, although the said test apparatus 3 used the secondary battery for the test object, of course, a capacitor can also be used as a test object.

  Further, in the test apparatus 3, as shown in FIG. 5, a maximum of eight secondary batteries 35 can be accommodated in the accommodating portion 43 of the magazine 37, but the maximum number of secondary batteries that can be accommodated is limited to this. However, the structure of the magazine is not limited to the above embodiment.

  Furthermore, the test apparatus 3 can use two slots 57 adjacent to one secondary battery 35, but two or more slots are provided in the power supply unit for one secondary battery. Depending on the test specifications and application, two or more DC-DC converters 61 and the like may be inserted into the slots.

  The above detailed description will clarify the features and advantages of the embodiments. This is intended to cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. Any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and changes. Accordingly, there is no intention to limit the scope of the inventive embodiments to those described above, and appropriate modifications and equivalents included in the scope disclosed in the embodiments can be used.

DESCRIPTION OF SYMBOLS 1 ... Base; 3 ... Test apparatus; 5 ... Support | pillar; 7,17 ... Mounting bracket; 13 ... Mounting stand; 15 ... Support stand; 29 ... Air cylinder; 31 ... Piston rod; 33 ... Guide member; 35 ... Secondary battery; 37 ... Magazine; 39, 41 ... Electrode; 47 ... partition wall; 51 ... guide groove; 53 ... power supply; 55 ... casing; 57 ... slot; 59 ... bidirectional DC-DC converter; DC-DC converter; 65 ... Substrate; 67 ... Heat sink; 73 ... Inflow pipe; 75 ... Outflow pipe; 77 ... Motherboard; 79 ... Socket; 83 ... Multi-connector; 91 ... Inflow coupler; 93 ... Outflow coupler 97 ... coupler; 101 ... probe; 103 ... spring; 105, 107 ... power cable; 109 ... regenerative inverter; 111, 115 ... power supply wiring; DC-DC converter

Claims (8)

A probe for attaching to the support base and connecting to the storage battery,
A substrate mounted on the support and connected to the probe via a power wiring;
At least one of charge / discharge bidirectional DC-DC converter, charge DC-DC converter, and discharge DC-DC converter with input / output voltage DC + 60V or less, -60V or more connected to the board via socket A test apparatus for a storage battery, comprising: The storage battery test apparatus according to claim 1,
A base on which the support base is disposed above;
A mounting table installed between the support table and the base;
An accommodation member which is placed on the mounting table, the upper part is opened, and the storage batteries are accommodated in parallel with the electrodes facing upward;
Driving means for moving at least one of the mounting table and the support table to bring the electrode and the probe into contact with each other;
A test apparatus for a storage battery, comprising: In the storage battery testing device according to claim 1 or 2,
The test apparatus for a storage battery, wherein the substrate, the charge / discharge bidirectional DC-DC converter, the charge DC-DC converter, and the discharge DC-DC converter have cooling means. In the storage battery testing device according to claim 3,
The cooling means is piped along the substrate, and a cooling water channel for cooling the substrate with cooling water flowing from outside,
The charging / discharging bidirectional DC-DC converter, the charging DC-DC converter, and a cooling water passage mounted on the discharging DC-DC converter,
The charging / discharging bidirectional DC-DC converter, the charging DC-DC converter, and the cooling water channel of the discharging DC-DC converter are the charging / discharging bidirectional DC-DC converter to the substrate, the charging DC -A storage battery testing apparatus, wherein a DC converter and a discharging DC-DC converter are connected to a cooling water channel on a substrate side. In the storage battery testing device according to claim 1 or 2,
The substrate has cooling means, and the charge / discharge bidirectional DC-DC converter, the charge DC-DC converter, and the discharge DC-DC converter are connected to the substrate via a heat conductive medium. A storage battery testing apparatus. The storage battery test apparatus according to claim 5,
The storage battery testing apparatus, wherein the cooling means is a cooling water channel that is piped along the substrate and cools the substrate with cooling water flowing from outside. In the storage battery testing device according to claim 3,
The charging / discharging bidirectional DC-DC converter, the charging DC-DC converter, and the discharging DC-DC converter each have an air-cooling type cooling means. The charge / discharge test apparatus according to claim 7,
A storage battery testing apparatus, wherein the air-cooling cooling means is a charge / discharge bidirectional DC-DC converter, the charge DC-DC converter, and a radiator attached to the discharge DC-DC converter.

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