JP2017161334A - Battery testing device and battery testing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery testing device with which it is possible to suppress an increase in device cost and installation space and quickly process a battery after test in a safe way.SOLUTION: A battery testing device 1 is designed to perform a crushing test or a nail penetration test on a battery 10. The battery testing device 1 comprises: a compression unit 6 arranged in such a way that the battery 10 is located between a counter unit 4 and itself; a drive unit 7 for moving the compression unit 6 in a direction D1 in which pressure is applied to the battery 10 or a direction D2 in which the pressure is released; a container 8 in which a processing solution 81 for short-circuiting or fire-extinguishing the battery 10 is stored; and battery movement means 50 for moving the battery 10 toward the container 8 as the drive unit 7 moves the compression unit 6 in the direction D2 in which the pressure is released.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a battery test apparatus and a battery test method.

  Conventionally, mechanical safety tests such as a crush test and a nail penetration test have been performed as tests for evaluating the safety of secondary batteries such as lithium ion batteries. The batteries after these tests are carried out are safely treated by placing them in a treatment solution such as salt water and shorting them completely electrically. In addition, when an abnormal heat generation, ignition or explosion of a battery occurs during the test, the battery is put into salt water after extinguishing with a fire extinguisher or the like.

  Patent Document 1 below includes, as an example of a battery test apparatus, a vibration table on which a battery to be evaluated is disposed, and a treatment liquid that is disposed adjacent to the vibration table and extinguishes the battery. And a vibration test apparatus including the container. This test device has a structure that, when detecting abnormal heat generation or ignition of a battery during the test, extrudes the battery by an extrusion unit arranged on a vibration table to drop the battery into a container and extinguish the fire. It has become.

JP 2013-224832 A

  The test apparatus disclosed in Patent Document 1 has a structure in which the battery is automatically dropped into a container containing a treatment liquid by pushing out the battery by an extrusion unit. In this case, there is a problem that the apparatus cost increases due to the provision of the extrusion unit, and the installation space also increases. In addition, in order to reduce the equipment cost, when the battery after the test is manually put into the treatment liquid without providing an extrusion unit, the battery is electrically unstable due to physical damage during the test. Since it becomes a state, the danger in work becomes a problem. In addition, when the ignited battery is put into the treatment liquid, it is necessary to wait for a long time until the battery burns out, and it is difficult to determine whether the battery is completely burned out in the first place.

  The present invention has been made in view of the above problems, and an object of the present invention is to suppress an increase in apparatus cost and installation space, and to quickly and safely process a battery after the test. It is to provide a test method.

  A battery test apparatus according to one aspect of the present invention is a battery test apparatus for performing a battery crushing test or a nail penetration test. The battery test apparatus moves the pressurizing unit disposed so that the battery is positioned between the facing unit and the pressurizing unit in a direction of pressurizing the battery or a direction of releasing the pressurization. The drive unit, a container in which a processing liquid for short-circuiting or extinguishing the battery is stored, and the pressurization unit moves in a direction to release the pressurization by the drive unit, whereby the battery is placed in the container. Battery moving means for moving the battery.

  In the battery test apparatus, the crushing test or the nail penetration test can be performed by moving the pressurizing unit by the driving unit to pressurize the battery. And when moving a pressurization part by a drive part and canceling | releases pressurization of a battery, a battery can be moved toward a container by a battery moving means. Thereby, a battery can be accommodated in a container and a battery can be short-circuited or extinguished with a process liquid. For this reason, it is not necessary to manually perform an operation of putting an electrically unstable battery in or after the test into the processing liquid, and the battery can be short-circuited or extinguished more safely. Further, since the battery can be put into the treatment liquid without human intervention, even when the battery ignites, it is not necessary to wait until the battery burns out, and the safety process can be performed promptly.

  Moreover, in the said battery test apparatus, when releasing the pressurization of a battery, a battery can be moved toward a container using the driving force for moving a pressurization part. For this reason, it is not necessary to provide a large and expensive drive mechanism for pushing out the battery toward the container as in the prior art, separately from the mechanism for driving the pressurizing unit, thereby suppressing an increase in apparatus cost and installation space. Can do. Therefore, according to the battery test apparatus, it is possible to suppress an increase in apparatus cost and installation space and to quickly and safely process the battery after the test.

  In the battery test apparatus, the battery moving unit may be configured by a connection member that connects the pressurizing unit and the battery to each other.

  According to this configuration, since the pressure unit and the battery are directly connected by the connecting member, the battery can be more reliably moved toward the container by the driving force that moves the pressure unit.

  In the battery test apparatus, the connection member may have heat resistance to withstand heat generation of the battery in the crush test or the nail penetration test.

  According to this configuration, it is possible to prevent the connection member from melting and disappearing even when the heat generation amount of the battery increases during the test.

  In the battery test apparatus, the connection member may have fire resistance that can withstand the ignition of the battery in the crush test or the nail penetration test.

  According to this configuration, even when the battery ignites during the test, it is possible to prevent the connecting member from being burned out.

  In the battery test apparatus, the battery moving unit may include a jig member that is disposed so as to face a portion of the battery that is opposite to the portion that is pressed by the pressing portion. The battery moving unit may be configured to move the jig member by a driving force that moves the pressure unit in a direction to release the pressurization, and to push the battery by the jig member.

  According to this configuration, even when the battery and the pressurizing unit cannot be directly connected due to the structure of the battery itself or the deformation of the battery at the time of the test, the battery is directed toward the container by pressing with the jig member. Can be moved.

  The battery test apparatus may further include an installation unit for installing the battery. The said container may be arrange | positioned on the opposite side to the said opposing part seeing from the said installation part.

  According to this configuration, as the pressurizing unit moves in the direction of releasing the pressurization, the battery installed in the installation unit can be moved more reliably to the container side.

  A battery test method according to another aspect of the present invention is a battery test method for performing a crush test or a nail penetration test by pressurizing a battery with a pressurizing unit. In the battery test method, the battery is moved toward a container in which a processing solution for short-circuiting or extinguishing the battery is stored using a driving force that moves the pressurizing unit in a direction in which the pressurization is released. Move.

  In the battery test method, in the battery crushing test or nail penetration test using the pressurizing unit, the battery is moved toward the container using the driving force that moves the pressurizing unit when releasing the pressurization of the battery. The battery can be short-circuited or extinguished by the treatment liquid in the container. For this reason, it is not necessary to manually perform an operation of putting an electrically unstable battery in or after the test into the processing liquid, and the battery can be short-circuited or extinguished more safely. Further, since the battery can be put into the treatment liquid without human intervention, even when the battery ignites, it is not necessary to wait until the battery burns out, and the safety process can be performed promptly. Further, in the battery test method described above, it is not necessary to use a test apparatus provided separately from the mechanism for driving the pressurizing unit by a large and expensive drive mechanism that pushes the battery toward the container as in the conventional case, and the apparatus cost and installation are reduced. An increase in space can be suppressed. Therefore, according to the battery test method, it is possible to suppress the increase in the apparatus cost and the installation space and to quickly and safely process the battery after the test.

  In the battery test method, the battery may be moved toward the container by a connecting member that connects the pressurizing unit and the battery to each other.

  According to this method, by using the connecting member that directly connects the pressurizing unit and the battery, the battery can be moved more reliably toward the container using the driving force that moves the pressurizing unit.

  In the battery test method, a jig member disposed so as to face a portion opposite to a portion pressed by the pressure portion in the battery is used, and the jig member is pressed by the driving force. May be moved in a direction in which the battery is released, and the battery may be pushed toward the container by the jig member.

  According to this method, even when the battery and the pressure unit cannot be directly connected due to the structure of the battery itself or the deformation of the battery at the time of the test, the battery is pushed toward the container by pressing with the jig member. Can be moved.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing the increase in apparatus cost and installation space, the battery test apparatus and battery test method which can carry out the safe process of the battery after a test quickly can be provided.

It is a schematic diagram which shows the structure seen from the side of the battery test apparatus which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows the structure seen from the upper direction of the said battery test apparatus. It is a schematic diagram which shows a mode that a battery is pressurized using the said battery test apparatus. It is a schematic diagram which shows the state which dropped the battery in the container using the said battery test apparatus. It is a schematic diagram which shows the modification of the battery test apparatus which concerns on the said Embodiment 1. FIG. It is a schematic diagram which expands and shows the connection part of a pressurization part and a battery in the said battery test apparatus. It is a schematic diagram which shows the structure seen from the side of the battery test apparatus which concerns on Embodiment 2 of this invention. It is a schematic diagram which shows the modification of the battery test apparatus which concerns on the said Embodiment 2. FIG. It is a schematic diagram which expands and shows the vicinity of the pressurization part in the battery test apparatus which concerns on Embodiment 3 of this invention. It is a schematic diagram which shows the structure of a ball screw. It is a schematic diagram which shows the structure of a rack and pinion. It is a schematic diagram which shows the state which the magnet provided in the battery and the magnet provided in the pressurization part adsorb | sucked. It is a schematic diagram which shows a mode that a battery falls to a container by gravity. It is a schematic diagram which shows a part of structure of the battery test apparatus provided with the pin and the engaging member engaged with this. It is a schematic diagram which shows the state by which the engaging member was hooked on the pin.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
[Battery testing equipment]
First, the configuration of the battery test apparatus 1 according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 schematically shows the overall configuration of the battery test apparatus 1. In FIG. 1, the horizontal direction is the horizontal direction, and the vertical direction is the gravity direction (vertical direction).

  The battery test apparatus 1 is an apparatus for performing a crushing test of the battery 10 that is an in-vehicle secondary battery such as a lithium ion battery. The crushing test is a kind of safety test of the battery 10, and a pseudo internal short circuit is generated by applying a predetermined pressure to the battery 10, and voltage and temperature changes at that time are measured. This is a test for confirming the safety of the battery 10 by confirming whether or not to ignite by external observation.

  As shown in FIG. 1, the battery testing apparatus 1 is configured such that the battery 10 is positioned between the installation unit 3 for installing the battery 10, the pressurization unit 6 that pressurizes the battery 10, and the pressurization unit 6. The opposing portion 4 that faces the pressing portion 6, the driving portion 7 that generates a driving force that moves the pressing portion 6 in the horizontal direction, the support portion 5 that supports the driving portion 7, and the battery 10 are electrically connected. And a container 8 in which a processing liquid 81 for extinguishing the battery 10 that has been short-circuited or ignited is stored. These components may be arranged in an environmental test apparatus such as a thermostatic chamber or a thermostatic chamber equipped with an air conditioning unit. Although not shown, the battery test apparatus 1 includes a control unit that operates the drive unit 7, a temperature measurement unit that is a sensor that measures a temperature change of the battery 10 under test, and a voltage change of the battery 10 under test. A voltage measuring unit for measuring

  The installation part 3 is a rectangular block body in a side view, and has a flat installation surface 31 on which the battery 10 is installed. The facing portion 4 is a rectangular plate body that is long in the vertical direction in a side view, and has a flat pressing surface 4A for pressing the second side portion 10B of the battery 10 in a crush test. The facing portion 4 is fixed to the base 4 </ b> B so as not to move during the crushing test, and is disposed so as to be in contact with one side surface 32 in the installation portion 3 or to be integrated with the installation portion 3.

  The pressure unit 6 is a rectangular plate (pressure plate) in a side view, and has a flat pressure surface 61 for pressing the first side portion 10 </ b> A of the battery 10. As shown in FIG. 1, the first side portion 10 </ b> A is a portion that faces the pressing surface 61 in the horizontal direction in the battery 10. A driving unit 7 is connected to a non-pressurizing surface 64 which is a part opposite to the pressing surface 61 in the pressing unit 6, and the pressing unit 6 can move in the horizontal direction by driving the driving unit 7. ing. As a result, during the crush test, the pressurizing unit 6 is moved so as to approach the battery 10, thereby applying pressure to the battery 10 and moving the pressurizing unit 6 away from the battery 10. The pressure can be released. Thus, the battery test apparatus 1 is a horizontal push-type crushing test apparatus that pressurizes the battery 10 in the horizontal direction to perform a crushing test.

  The drive unit 7 is for generating a drive force for moving the pressure unit 6 in the horizontal direction. The drive unit 7 includes a cylinder 72 and a rod 71 provided so as to be movable forward and backward in the horizontal direction with respect to the cylinder 72. As shown in FIG. 1, the rod 71 is connected at its tip end to a substantially central portion in the height direction of the pressurizing unit 6, passes through the insertion hole 5 </ b> B formed in the support unit 5, and has a rear end ( The portion on the opposite side of the tip portion protrudes outside the outer surface 5C of the support portion 5. A cylinder 72 is connected to the rear end portion. The cylinder 72 has a drive source (not shown) such as a hydraulic pump, a pneumatic pump, or an electric motor. By driving this drive source, the rod 71 is moved back and forth in the horizontal direction to pressurize the battery 10 (direction D1 in the left direction in FIG. 1) and release direction D2 (in the right direction in FIG. 1). The pressure unit 6 can be moved horizontally.

  The container 8 is a box with an opening 82 provided above. The container 8 is lower in height than the installation part 3 and is disposed on the opposite side of the opposing part 4 with respect to the installation part 3. Specifically, the container 8 is disposed in contact with the other side surface 33 in the installation portion 3. Therefore, as shown in FIG. 1, the opening 82 is positioned below the installation surface 31, and a step is formed between the opening 82 and the installation surface 31. Thereby, the battery 10 arrange | positioned on the installation surface 31 can be dropped in the container 8 by moving to the direction D2.

  The container 8 has a depth capable of storing a predetermined amount of the processing liquid 81. The treatment liquid 81 is a fire extinguishing liquid for extinguishing the battery 10 that is electrically short-circuited or ignited during or after the test. For example, a sodium chloride aqueous solution (brine) can be used. However, the treatment liquid 81 is not limited to this, and may be any liquid that can perform the short circuit and the fire extinguishing process of the battery 10.

  The battery test apparatus 1 further includes a battery moving unit 50 that moves the battery 10 toward the container 8 when the pressurizing unit 6 moves in the direction D2 in which the pressurization unit 7 releases the pressurization. Specifically, the battery moving means 50 is configured by a connecting member such as a wire that connects the pressure surface 61 of the pressure unit 6 and the battery 10 to each other. By providing the battery moving means (connection member) 50, the battery 10 can be pulled in the same direction D2 as the pressurizing unit 6 moves in the direction D2, and the battery 10 is dragged on the installation surface 31. It can be moved towards the container 8. Thereby, as shown in FIG. 4, the battery 10 is dropped into the container 8 and immersed in the treatment liquid 81, whereby the battery 10 can be short-circuited and extinguished.

  Thus, in the battery test apparatus 1, the battery 10 can be moved toward the container 8 by using the driving force that moves the pressurizing unit 6 in the direction D <b> 2 when releasing the pressurization of the battery 10. . That is, a drive mechanism for moving the pressurizing unit 6 and a drive mechanism for moving the battery 10 toward the container 8 can be used in combination. For this reason, it is not necessary to provide a drive mechanism for pushing the battery 10 toward the container 8 separately from the drive mechanism (drive unit 7) for horizontally moving the pressurizing unit 6. Thereby, the electrically unstable battery 10 during or after the test can be put into the treatment liquid 81 without human intervention, and the battery 10 can be short-circuited and extinguished more safely. .

  By the way, in the crushing test, when the battery 10 is pressurized and short-circuited internally, the battery 10 may abnormally generate heat or ignite. On the other hand, the connection member 50 has heat resistance that can withstand the heat generation of the battery 10 and fire resistance that can withstand ignition of the battery 10. Specifically, the connection member 50 is configured by a wire made of a material such as stainless steel. For this reason, even when the battery 10 is ignited during the test, the connecting member 50 is not burned out, and even when the battery 10 is abnormally heated and the temperature rises significantly, it can exist without melting. However, the connection member 50 is not limited to the one made of stainless steel, and may be made of another material. Moreover, the connection member 50 is not limited to the case where it is comprised by a wire, For example, you may be comprised by other members, such as a chain.

  Further, when the battery 10 is pulled toward the container 8 by the connecting member 50, a load corresponding to the weight of the battery 10 is applied to the connecting member 50. On the other hand, the connection member 50 has such durability that it does not break due to a load applied when the battery 10 is moved toward the container 8.

  FIG. 2 is a plan view of the battery test apparatus 1 as viewed from above. As shown in FIG. 2, the pressing surface 61 includes a first surface portion 61 </ b> A that faces the first side portion 10 </ b> A that is a pressed portion in the battery 10, and a pair of second surface portions that are located on both sides of the first surface portion 61 </ b> A. 61B. The connection member 50 includes a first end 51 and a second end 52 that is an end opposite to the first end 51. The connection member 50 has a first end portion 51 connected to the second surface portion 61B (connection portion P1) and a second end portion 52 connected to the third side portion 10C of the battery 10 (connection portion). P2). The first and second end portions 51 and 52 are respectively fixed by arbitrary fixing means having heat resistance and fire resistance, such as bolts, adhesives or seal members. The third side portion 10 </ b> C is a portion that is perpendicular to the first side portion 10 </ b> A and is not pressurized by the pressurizing unit 6. For this reason, as shown in FIG. 2, the connection member 50 can connect the pressurizing part 6 and the battery 10 so as not to pass through the space S between the first side part 10A and the first surface part 61A. . Thereby, it is possible to prevent the connection member 50 from being sandwiched between the pressurizing unit 6 and the battery 10 when the pressurizing unit 6 is brought close to the battery 10 during the crushing test.

  In addition, the location which connects the 1st and 2nd edge parts 51 and 52 of the connection member 50 is not limited to the location shown in FIG. For example, the first end 51 may be connected to the lower surface 62 (FIG. 1) of the pressure unit 6, and the second end 52 may be connected to the second side 10 </ b> B (the first side 10 </ b> A) of the battery 10. May be connected to the fourth side portion 10D of the battery 10 or may be connected to the upper surface of the battery 10. The second end 52 is not limited to the case where the second end 52 is fixed to the battery 10 with a bolt, an adhesive, a seal member, or the like.

  Further, the present invention is not limited to the case where one connecting member 50 is provided, and a plurality of (for example, two) connecting members 50A and 50B are provided as shown in FIG. 5, and the pressurizing unit 6 is provided by the first connecting member 50A. The second surface portion 61B of the battery 10 and the third side portion 10C of the battery 10 are connected, and the other second surface portion 61B of the pressurizing portion 6 and the fourth side portion 10D of the battery 10 (third) are connected by the second connecting member 50B. You may connect the side part 10C and the site | part on the opposite side. As described above, the two connection members 50A and 50B are connected to the both side portions 10C and 10D of the battery 10, respectively, and the battery 10 is pulled toward the container 8 by using the connection members 50A and 50B. The battery 10 can be pulled more stably than in the case.

  FIG. 6 shows an enlarged connection portion between the battery 10 and the pressure unit 6. As shown in FIG. 6, the connecting member 50 may have a length corresponding to the shortest distance L1 between the connecting portion P1 and the connecting portion P2, but has a total length L equal to or greater than the shortest distance L1. You may do it. That is, the connecting member 50 has an extra length L-L1 corresponding to the difference length between the total length L and the shortest distance L1, and may be in a slack state in the standby state as shown in FIG.

  However, if the extra length L-L1 is too long, the battery 10 cannot be dropped into the container 8 even if the pressure unit 6 is moved from the standby position (FIG. 1) to the retracted position (FIG. 4). Specifically, as shown in FIG. 1, the distance L2 between the non-pressurizing surface 64 of the pressurizing unit 6 and the inner surface 5A of the support unit 5 in the standby state is determined by the device structure. Since the distance that can be retracted corresponds to the distance L2, it is necessary to move the battery 10 to a position where it can drop into the container 8 during this time. By determining the upper limit value of the extra length L-L1 from such a viewpoint, the battery 10 can be more reliably dropped into the container 8 while the pressurizing unit 6 moves by the distance L2.

[Battery test method]
Next, a battery test method according to this embodiment that is performed using the battery test apparatus 1 will be described. In the battery test method, the crushing test is performed by pressing the battery 10 in the horizontal direction by the pressing unit 6.

  As shown in FIG. 1, first, in the battery test apparatus 1 in a standby state, the battery 10 to be evaluated is placed on the installation surface 31 of the installation unit 3. At this time, the battery 10 is disposed at a position on the left side in FIG. 1 such that the second side portion 10B is in contact with the pressure surface 4A. And the pressurization part 6 (pressurization surface 61) and the battery 10 (3rd side part 10C) are connected by the connection member 50. FIG. Further, as test conditions, a crushing speed (mm / s), which is a speed at which the pressure unit 6 is moved in the horizontal direction to pressurize the battery 10, and a pressure applied to the battery 10 from the pressure unit 6 (kN). A stroke (mm), which is a distance for moving the pressure unit 6 in the horizontal direction, is input by the user in the control unit.

  Next, when the start switch is pressed by the user, the pressing unit 6 starts moving in the direction D1 by the driving unit 7, and the pressing surface 61 contacts the first side portion 10A of the battery 10. Thereby, the battery 10 is in a state in which the first and second side portions 10 </ b> A and 10 </ b> B are sandwiched between the pressing portion 6 and the facing portion 4. In this state, when the pressing unit 6 is further moved in the direction D1 by the driving unit 7 at the set crushing speed (mm / s), the battery 10 is moved horizontally by the pressing surfaces 61 and 4A as shown in FIG. Will be crushed. During this time, temperature change and voltage change of the battery 10 are measured over time.

  And after the pressurization part 6 moves only the set stroke (mm), the pressurization part 6 moves to the direction D2 by the drive part 7, and the pressurization of the battery 10 is cancelled | released. And as shown in FIG. 1, the pressurization part 6 returns to the original standby position, and the external observation with respect to the battery 10 after a collapse is performed in this state.

  Thereafter, the pressure unit 6 is further moved in the direction D2 by the drive unit 7. Thereby, the battery 10 connected to the pressurizing unit 6 via the connection member 50 moves in the same direction D2 while being dragged on the installation surface 31. Then, as shown in FIG. 4, the battery 10 can be dropped into the container 8 by moving the pressure unit 6 to the retracted position (a position where the non-pressurized surface 64 contacts the inner surface 5 </ b> A).

  Thus, in the battery test method according to the present embodiment, the battery 10 is moved toward the container 8 by using the driving force that moves the pressure unit 6 in the direction D2 in which the pressure of the battery 10 is released. Can be made. Thereby, the electrically unstable battery 10 after the test can be put into the treatment liquid 81 without human intervention, and when the battery 10 is electrically short-circuited by the treatment liquid 81 and ignited, The battery 10 can be extinguished. Even when ignition occurs during the pressurization of the battery 10 and there is an urgent need to extinguish the fire, the battery 10 is moved toward the container 8 by moving the pressurizing unit 6 in the direction D2 in the same manner. The battery 10 can be extinguished by the liquid 81.

[Function and effect]
Next, features and operational effects of the battery test apparatus 1 and the battery test method according to the present embodiment will be described.

  The battery test apparatus 1 is an apparatus for performing a crush test of the battery 10. The battery test apparatus 1 releases the pressure D6 in which the battery 10 is pressed with the pressurizing unit 6 disposed so that the battery 10 is positioned between the facing unit 4 and the pressurizing unit 6. The drive unit 7 that moves in the direction D2, the container 8 that stores the treatment liquid 81 for short-circuiting or extinguishing the battery 10, and the pressurization unit 6 moves in the direction D2 in which the pressurization unit 7 releases the pressurization. Thus, a battery moving means 50 for moving the battery 10 toward the container 8 is provided.

  The battery test method is a test method for performing a crush test by pressurizing the battery 10 by the pressurizing unit 6. In the battery test method, the battery is moved toward the container 8 in which the treatment liquid 81 for short-circuiting or extinguishing the battery 10 is stored using the driving force that moves the pressurizing unit 6 in the direction D2 in which the pressurization is released. 10 is moved.

  According to the above feature, the crushing test can be performed by moving the pressurizing unit 6 by the driving unit 7 to pressurize the battery 10. When the pressure unit 6 is moved by the drive unit 7 to release the pressure of the battery 10, the battery 10 can be moved toward the container 8 by the battery moving unit 50. At this time, the battery 10 can be moved to the container 8 side using the driving force generated by the driving unit 7. Thereby, the battery 10 can be accommodated in the container 8, and the battery 10 can be short-circuited or extinguished by the treatment liquid 81. For this reason, it is not necessary to manually perform the operation of putting the electrically unstable battery 10 in the treatment liquid 81 during or after the test, and the battery 10 can be short-circuited or extinguished more safely. In addition, since the battery 10 can be put into the treatment liquid 81 without human intervention, even when the battery 10 is ignited, it is not necessary to wait until the battery 10 is burned out, and the safety process can be performed quickly.

  Moreover, according to the said characteristic, when releasing the pressurization of the battery 10, the battery 10 can be moved toward the container 8 using the drive force for moving the pressurization part 6. FIG. For this reason, it is not necessary to provide a large and expensive drive mechanism for pushing the battery 10 toward the container 8 separately from the mechanism for driving the pressurizing unit 6, thereby suppressing an increase in apparatus cost and installation space. it can. Therefore, according to the above feature, it is possible to quickly and safely process the battery 10 after the test while suppressing an increase in device cost and installation space.

  In the battery test apparatus 1, the battery moving means 50 is configured by a connection member 50 that connects the pressurizing unit 6 and the battery 10 to each other. In the battery test method, the battery 10 is moved toward the container 8 by the connecting member 50. Thus, by directly connecting the pressurizing unit 6 and the battery 10 by the connecting member 50, the battery 10 can be moved more reliably toward the container 8 using the driving force that moves the pressurizing unit 6. it can.

  In the battery test apparatus 1, the connecting member 50 has heat resistance that can withstand the heat generation of the battery 10 in the crush test. Thereby, even when the calorific value of the battery 10 increases during the test, the connection member 50 can be prevented from melting and disappearing.

  In the battery test apparatus 1, the connecting member 50 has fire resistance that can withstand the ignition of the battery 10 in the crush test. Thereby, even when the battery 10 ignites during the test, it is possible to prevent the connection member 50 from being burned out.

  In the battery test apparatus 1, the connection member 50 has durability that does not break due to a load applied when the battery 10 is moved toward the container 8. Thereby, when the battery 10 is moved by the connection member 50, the connection member 50 can be prevented from being broken, and the battery 10 can be moved more reliably toward the container 8.

  The battery test apparatus 1 includes an installation unit 3 for installing the battery 10. The container 8 is disposed on the opposite side of the facing portion 4 with respect to the installation portion 3. Thereby, the battery 10 installed in the installation part 3 can be moved to the container 8 side more reliably as the pressurization part 6 moves in the direction D2 in which the pressurization is released.

(Embodiment 2)
Next, a battery test apparatus 1A according to Embodiment 2 of the present invention and a battery test method using the same will be described with reference to FIG. The second embodiment is basically the same as the first embodiment, but differs from the first embodiment in that the battery moving means 50 is constituted by a jig member 53 and a connecting member 54. Hereinafter, only the configuration of the battery moving unit 50 different from that of the first embodiment will be described in detail.

  As shown in FIG. 7, the battery moving unit 50 includes a jig member 53 having an L-shape when viewed from the side, and a connecting member that connects the jig member 53 and the pressurizing unit 6 (pressurizing surface 61) to each other. 54. In the second embodiment, one end of the connection member 54 is connected to the pressure surface 61, while the other end is not directly connected to the battery 10.

  The jig member 53 is arranged on the installation surface 31 on the left side in FIG. The jig member 53 is interposed between the battery 10 (second side part 10B) and the facing part 4, and has a first jig part 53A having a shape extending in the vertical direction, the lower surface of the battery 10, and the installation surface 31. And a second jig portion 53B having a shape extending in the horizontal direction. The first jig portion 53A has a pressing surface 53AA that faces the second side portion 10B of the battery 10 and presses the second side portion 10B in the horizontal direction (direction D2). The second jig part 53B is connected to the lower end of the first jig part 53A and is formed integrally with the first jig part 53A.

  The connection member 54 is made of a wire having the same material and diameter as the connection member 50 of the first embodiment. The connection member 54 has heat resistance and fire resistance that can withstand the heat generation and ignition of the battery 10 and is not broken when the battery 10 is pulled. It has durability. The connection member 54 has one end connected to the pressure surface 61 and the other end connected to the upper portion of the first jig portion 53A. As shown in FIG. 7, the connection member 54 is provided so as to pass above the battery 10. In addition, the arrangement | positioning method of the connection member 54 is not limited to this, You may connect to the 2nd jig | tool part 53B instead of the 1st jig | tool part 53A. Further, a plurality of connection members 54 may be provided, and the connection member 54 may be connected to each of the first jig portion 53A and the second jig portion 53B.

  In the battery testing apparatus 1A having the above configuration, when the pressing unit 6 is moved in the direction D2 by the driving unit 7, the jig member 53 moves in the same direction D2 while being dragged on the installation surface 31. At this time, the battery 10 moves toward the container 8 when the second side portion 10B is pressed in the direction D2 by the pressing surface 53AA. That is, in the present embodiment, the battery moving unit 50 moves the jig member 53 in the same direction D2 by the driving force that moves the pressurizing unit 6 in the direction D2, and the jig member 53 moves the battery 10 in the direction D2. Configured to push.

  Next, a battery test method using the battery test apparatus 1A will be described. First, the battery 10 is disposed on the jig member 53. At this time, the battery 10 is in a state where the second side portion 10B is in contact with the first jig portion 53A and the lower surface is in contact with the second jig portion 53B. After each test condition is input by the user, the battery 10 is crushed by pressurization by moving the pressurization unit 6 in the direction D1 by the drive unit 7 as in the first embodiment, and then the pressurization unit 6 Is moved in the direction D2 to return to the standby state.

  Thereafter, the pressure unit 6 is further moved in the direction D2 by the drive unit 7. Thereby, the jig member 53 moves in the same direction D2 while being dragged on the installation surface 31. At this time, the battery 10 moves toward the container 8 by being pushed in the direction D2 by the pressing surface 53AA. Then, the battery 10 can be dropped into the container 8 by moving the pressurizing unit 6 to the retracted position, and the battery 10 can be short-circuited and extinguished by the treatment liquid 81.

  As described above, in the second embodiment, the jig member 53 is moved in the same direction D2 by the driving force that moves the pressurizing unit 6 in the direction D2, and the battery 10 is pushed in the direction D2 by the jig member 53 to the container 8. Move towards. As a result, when the battery 10 does not have a structure capable of fixing the connection member 54 or due to deformation of the battery 10 due to pressurization during a crushing test, the battery 10 and the pressure member 6 are directly connected by the connection member 54. Even if it cannot be performed, the battery 10 can be moved toward the container 8 by being pushed by the jig member 53.

  As shown in FIG. 8, the jig member 53 is not interposed between the lower surface of the battery 10 and the installation surface 31, and is interposed only between the second side portion 10 </ b> B of the battery 10 and the facing portion 4. May be. That is, the jig member 53 may be configured only by the first jig portion 53A (FIG. 7). Thereby, the jig member 53 can be formed in a simpler shape and smaller.

  Conversely, the jig member 53 may be configured only by the second jig portion 53B (FIG. 7) and may be interposed only between the lower surface of the battery 10 and the installation surface 31. In this case, the coefficient of friction between the jig member 53 and the battery 10 may be set to a certain level or more so that the battery 10 does not slide off from the jig member 53 when the jig member 53 is moved in the direction D2. preferable.

  The crushing test may be performed by fixing crushing jigs having various shapes to the pressing unit 6. This crushing jig is specified by a test standard, and the crushing jig may be fixed in this manner. However, as in the first and second embodiments, a flat plate-like pressure unit 6 may be used without fixing the crushing jig.

(Embodiment 3)
Next, a battery test apparatus according to Embodiment 3 of the present invention will be described with reference to FIG. The third embodiment is basically the same as the first and second embodiments, but differs from the first and second embodiments in that a nail penetration test is performed.

  FIG. 9 is an enlarged view of the vicinity of the pressure unit 6 in the battery test apparatus. As shown in FIG. 9, a nail portion 63 for penetrating the battery 10 is provided on the pressure surface 61 of the pressure portion 6. For this reason, the nail | claw part 63 can be penetrated to the battery 10 by moving the pressurization part 6 in the direction which approaches the battery 10 by the drive part 7. FIG. Thereby, an internal short-circuit can be generated in the battery 10, and a nail penetration test for confirming changes in temperature and voltage at that time, the appearance of the battery 10, and the like can be performed.

  Then, after the nail penetration test is completed, the battery 10 is moved toward the container 8 by using the driving force for retracting the pressurizing unit 6 and dropped into the container 8 as in the first and second embodiments. Thus, the battery 10 can be short-circuited and extinguished.

  Depending on the diameter of the nail part 63 and the weight of the battery 10, the nail part 63 may not be removed from the battery 10. Therefore, a mechanism for removing the nail part 63 from the battery 10 may be provided.

(Other embodiments)
Finally, other embodiments of the present invention will be described.

  In the first to third embodiments, the case where the driving unit 7 includes the rod 71 and the cylinder 72 has been described. However, the present invention is not limited to this, and various driving force for moving the pressing unit 6 in the directions D1 and D2 is generated. A straight motion mechanism can be employed. For example, as shown in FIG. 10, the drive unit 7 includes a screw shaft 75, a nut 73 attached to the screw shaft 75, and a plurality of balls 74 that circulate along a screw groove 75 </ b> A provided in the screw shaft 75. , May be configured by a ball screw. In this configuration, the nut 73 can be linearly moved by rotating the screw shaft 75 about the axis, and the nut 73 can be moved horizontally by pushing the pressing portion 6 by the flange surface 73A. Further, the pressurizing unit 6 may be fixed to the flange surface 73 </ b> A of the nut 73.

  As shown in FIG. 11, the drive unit 7 may be configured by a gear (rack and pinion) including a rack 77 and a pinion 76. In this configuration, the rotational force of the pinion 76 can be converted into a linear motion of the rack 77, and the pressurizing unit 6 can be moved horizontally using this linear motion. In addition, a linear guideway, a belt type linear motion mechanism, or the like may be used.

  In the first embodiment, the battery moving means is configured by the connecting member 50, and in the second embodiment, the battery moving means is configured by the jig member 53 and the connecting member 54. However, the present invention is not limited to this. For example, as shown in FIG. 12, the battery moving means is configured by the first magnet 65 attached to the side surface of the pressurizing unit 6 and the second magnet 66 attached to the third side portion 10 </ b> C of the battery 10. May be. Since the first magnet 65 and the second magnet 66 have different poles, an attractive force is generated. Therefore, the battery 10 can be pulled toward the container 8 by the attractive force of the first and second magnets 65 and 66 when the pressurizing unit 6 is retracted in the direction D2. As shown in FIG. 13, when the battery 10 moves away from the installation surface 31, the battery 10 falls into the container 8 due to gravity. Thereby, the battery 10 is moved to the container 8 side by using the driving force for moving the pressurizing unit 6 as in the case where the battery 10 and the pressurizing unit 6 are physically connected as in the first embodiment. Can be made. In addition, it is good also as a structure which arrange | positions a magnet to the jig member 53 of the said Embodiment 2, and pulls the said jig | tool member 53 with the attraction | suction force of a magnet. Further, when the battery 10 itself has magnetism, the second magnet 66 can be omitted.

  As shown in FIG. 14, the battery moving means includes a jig member 53, a pin 55 provided on the jig member 53 (a pin extending toward the front side of the paper surface), and a pressure unit 6. The hook part 67A to be engaged may be constituted by the engaging member 67 formed at the tip. As shown in FIG. 14, the engaging member 67 is rotatable around a fulcrum 68 that is a connecting portion to the pressing portion 6. In this configuration, when the battery 10 is pressurized by the pressurizing part 6, the inclined part provided at the tip of the hook part 67A comes into contact with the pin 55 so that the hook part 67A rises upward, as shown in FIG. The engaging member 67 can be hooked on the pin 55. In this state, the jig member 53 on which the battery 10 is placed can be moved toward the container 8 by retreating the pressurizing unit 6 in the direction D2. Moreover, it is good also as a structure which attached the pin 55 not to the jig | tool member 53 but battery 10 itself.

  Further, the battery 10 to be evaluated is not limited to a lithium ion battery, and may be an alkaline secondary battery such as a nickel cadmium battery or a nickel metal hydride battery.

  The treatment liquid 81 is not limited to salt water, and may be an aqueous electrolyte solution in which another electrolyte such as potassium chloride or lithium chloride is dissolved.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1,1A Battery test apparatus 3 Installation part 4 Opposing part 6 Pressurization part 7 Drive part 8 Container 10 Battery 50, 50A, 50B Connection member (battery moving means)
53 Jig member (battery moving means)
54 Connection member (battery moving means)
81 Treatment liquid

Claims (9)

A battery testing device for performing a battery crushing test or a nail penetration test,
A pressurizing part arranged so that the battery is positioned between the opposing part;
A driving unit that moves the pressurizing unit in a direction of pressurizing the battery or in a direction of releasing the pressurization; and
A container in which a processing liquid for short-circuiting or extinguishing the battery is stored;
A battery test apparatus comprising: battery moving means for moving the battery toward the container by moving the pressurizing unit in a direction to release the pressurization by the driving unit.   The battery test apparatus according to claim 1, wherein the battery moving unit includes a connection member that connects the pressure unit and the battery to each other.   The battery test apparatus according to claim 2, wherein the connection member has heat resistance to withstand heat generation of the battery in the crush test or the nail penetration test.   4. The battery test apparatus according to claim 2, wherein the connection member has fire resistance that withstands ignition of the battery in the crush test or the nail penetration test. 5. The battery moving means has a jig member arranged so as to face a portion opposite to a portion pressed by the pressing portion in the battery.
The said battery moving means is comprised so that the said jig | tool member may be moved with the drive force which moves the said pressurization part in the direction which cancels | releases the said pressurization, and the said battery is pushed by the said jig | tool member. The battery test apparatus according to 1. It further comprises an installation part for installing the battery,
The battery testing apparatus according to claim 1, wherein the container is disposed on a side opposite to the facing portion when viewed from the installation portion. A battery test method for performing a crush test or a nail penetration test by pressurizing a battery with a pressurizing unit,
The battery is moved toward a container in which processing liquid for short-circuiting or extinguishing the battery is stored using a driving force that moves the pressurizing unit in a direction in which the pressurization is released. A battery test method.   The battery test method according to claim 7, wherein the battery is moved toward the container by a connection member that connects the pressurizing unit and the battery to each other.   Using a jig member disposed so as to face a part opposite to the part pressurized by the pressure part in the battery, the jig member is moved in a direction in which the pressure is released by the driving force. The battery test method according to claim 7, wherein the battery is pushed and moved toward the container by the jig member while being moved.

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