Apparatus for testing battery

Abstract

The present invention relates to an apparatus for testing a battery having an electrode terminal, the apparatus comprising: a power supply unit configured to supply power; a power supply path which has one side connected to the electrode terminal and the other side connected to the power supply unit, and is configured to provide a path through which power is supplied from the power supply unit to the electrode terminal; a temperature sensing unit which is disposed on at least one side of the power supply path and configured to measure the temperature of the power supply path; a heating unit which is disposed on at least one side of the power supply path and configured to apply heat to the power supply path; and a control unit configured to control the heat application of the heating unit according to the temperature measurement result of the temperature sensing unit.

Description

Battery test device

[0001] The present invention relates to a battery testing device. More specifically, the present invention relates to a battery rapid charging testing device.

[0002] This application claims priority to Korean Patent Application No. 10-2024-0094019, filed on July 16, 2024, and all contents disclosed in the specification and drawings of the said application are incorporated by reference into this application.

[0003] Secondary batteries, which boast high electrical properties such as high energy density and easy applicability across a wide range of product categories, are widely used not only in portable devices but also in electric vehicles (EVs) and hybrid electric vehicles (HEVs) powered by electrical power sources. These batteries are attracting attention as a new energy source for environmental friendliness and energy efficiency, not only because they can dramatically reduce fossil fuel use, but also because they produce no byproducts from energy use.

[0004] Commonly used secondary battery types today include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. When high output voltage is required, multiple battery cells are connected in series to form a battery module or battery pack. Furthermore, to increase charge / discharge capacity, multiple battery cells are connected in parallel to form a battery module or battery pack.

[0005] When connecting multiple battery cells in series or parallel to form a battery pack, it's common to first construct a battery module containing at least one battery cell, and then use this at least one battery module to add other components to form a battery pack or battery rack. Recently, battery packs in the cell-to-pack form, where multiple battery cells are housed directly in a pack housing or other device, without modularization, have also been manufactured.

[0006] Meanwhile, to accurately test battery pack performance, including temperature and efficiency, during rapid charge / discharge cycles, multiple battery modules are required. However, manufacturing and testing multiple battery modules before the design is finalized is a significant waste of time and money. Furthermore, testing with multiple battery modules requires a larger test chamber, leading to other issues.

[0007] If testing is performed with a single battery module, the temperature during rapid charging cannot be accurately predicted due to conditions different from those of an actual battery pack. In particular, when multiple battery modules are electrically connected, connecting the current cables prevents heat from dissipating through the current cables.

[0008] However, when using one module, there is a problem that heat escapes through the current cable when the current cable is connected.

[0009] Therefore, when conducting a battery rapid charging test, there is a need to develop a structure that can simulate a situation almost identical to a battery pack equipped with multiple battery modules using a single battery module.

[0010] Accordingly, the present invention has been created to solve the above problems, and its purpose is to provide a battery test device that can simulate a situation almost identical to a battery pack equipped with multiple battery modules using one battery module during a battery rapid charging test.

[0011] However, the problems to be solved by the present invention are not limited to the problems described above, and other problems not mentioned can be clearly understood by those skilled in the art from the description of the invention described below.

[0012] In order to solve the above problem, the present invention provides a battery testing device comprising: a power supply configured to supply power; a power supply path configured to provide a path for supplying power from the power supply to the electrode terminal, the power supply path having one end connected to the electrode terminal and the other end connected to the power supply path; a temperature sensing unit arranged at least on one side of the power supply path and configured to measure the temperature of the power supply path; a heating unit arranged at least on one side of the power supply path and configured to apply heat to the power supply path; and a control unit configured to control the application of heat to the heating unit based on a temperature measurement result of the temperature sensing unit.

[0013] The above control unit may be configured to uniformly maintain the temperature of the power supply path according to the temperature of the power supply path measured by the temperature sensing unit.

[0014] The above control unit may be configured to control whether the heating unit operates according to the temperature of the power supply path measured by the temperature sensing unit.

[0015] The above temperature sensing unit may include a first temperature sensing unit and a second temperature sensing unit provided on both sides in the longitudinal direction of the power supply path.

[0016] The control unit may be configured to maintain the temperature difference measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit below a specific temperature.

[0017] The above heating unit may be provided on the side of the first temperature sensing unit.

[0018] The above heating unit may include a first heating unit and a second heating unit provided on both sides in the longitudinal direction of the power supply path.

[0019] The control unit may be configured to operate either the first heating unit or the second heating unit when the difference between the temperature measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit is greater than a specific temperature.

[0020] The control unit may be configured to stop either the first heating unit or the second heating unit when either one of the first heating unit and the second heating unit is operated and the difference between the temperature measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit becomes less than a specific temperature.

[0021] The power supply path may include a first path configured to be connected to the power supply unit, and a second path configured to be connected to the first path and the electrode terminal.

[0022] The temperature sensing unit and the heating unit may be provided on the second path side.

[0023] A battery test device according to one embodiment of the present invention may further include a receiving portion configured to receive the second path.

[0024] According to one aspect of the present invention, during a rapid battery charging test, a single battery module can be used to simulate a situation nearly identical to that of a battery pack comprising multiple battery modules. Accordingly, the temperature of a battery pack during rapid charging can be accurately predicted using a single battery module.

[0025] Moreover, according to one aspect of the present invention, the cost and time required for battery rapid charging tests can be minimized.

[0026] In addition, the present invention may have various other effects, which will be described in each embodiment configuration, or an explanation of effects that can be easily inferred by a person skilled in the art will be omitted.

[0027] The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0028] FIG. 1 is a schematic diagram illustrating the configuration of a battery test device according to one embodiment of the present invention.

[0029] FIG. 2 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention.

[0030] FIG. 3 is a perspective view of a battery test device according to another embodiment of the present invention.

[0031] FIG. 4 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention.

[0032] FIG. 5 is a perspective view of a battery test device according to another embodiment of the present invention.

[0033] FIG. 6 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention.

[0034] Figure 7 is a perspective view of a battery test device according to another embodiment of the present invention.

[0035] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0036] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0037] Furthermore, the present invention includes various embodiments. For each embodiment, redundant descriptions of substantially identical or similar components will be omitted, and the differences will be described.

[0038] Meanwhile, in the present invention, terms indicating directions such as up, down, left, right, front, and back may be used, but it is obvious to those skilled in the art that these terms are only for convenience of explanation and may vary depending on the location of the target object or the location of the observer.

[0039] For example, in an embodiment of the present invention, the X-axis direction shown in the drawing may mean the left-right direction, the Y-axis direction may mean the front-back direction perpendicular to the X-axis direction and the horizontal plane (XY plane), and the Z-axis direction may mean the up-down direction (vertical direction) perpendicular to both the X-axis direction and the Y-axis direction, i.e., the height direction of the battery cell.

[0040]

[0041] FIG. 1 is a schematic diagram illustrating the configuration of a battery test device according to one embodiment of the present invention.

[0042] The battery test device (1) according to the present invention is a device for testing a battery (10).

[0043] The battery (10) may be a battery cell. The battery cell may be a secondary battery. Furthermore, the battery (10) may be a battery module comprising multiple battery cells. In particular, the present invention may comprise one battery (10).

[0044] In addition, the battery (10) may be provided with an electrode terminal (11). The electrode terminal (11) may be configured to be electrically connected to a battery cell. Through this electrical connection, the electrode terminal (11) may be configured to transmit status information about the battery (10) to an external component. For example, the electrode terminal (11) may be configured to transmit voltage information of the battery cell to an external control device such as a BMS (Battery Management System). In addition, the electrode terminal (11) may be configured to receive current from an external source to the battery (10).

[0045] Two electrode terminals (11) may be provided on both sides of the width direction of the battery (10). The electrode terminals (11) may be provided with a negative terminal and a positive terminal.

[0046] Meanwhile, referring to FIG. 1, a battery test device (1) according to the present invention includes a power supply unit (100), a power supply path (200), a temperature sensing unit (300), a heating unit (400), and a control unit (500).

[0047] The above power supply unit (100) may be configured to supply power. The battery test device (1) may be configured to receive power from an external power source and charge the battery (10). The power source may be a power source capable of supplying charging power or receiving discharging power.

[0048] The above power supply path (200) may be configured to provide a path through which power is supplied from the power supply unit (100) to the electrode terminal (11). That is, current may be supplied to the battery (10) through the power supply path (200). Accordingly, the power supply path (200) may convert power transmitted from the power supply unit (100) to generate current, and supply such current to the electrode terminal (11) of the battery (10).

[0049] The power supply path (200) may be configured to extend lengthwise. One end of the power supply path (200) may be connected to an electrode terminal (11) and the other end may be connected to a power supply unit (100). Connection terminals may be provided on both sides of the power supply path (200).

[0050] The temperature sensing unit (300) may be arranged on at least one side of the power supply path (200). The temperature sensing unit (300) may be configured to measure the temperature of the power supply path (200). The temperature sensing unit (300) may be configured to directly or indirectly measure the temperature of the power supply path (200). The temperature sensing unit (300) may be configured to measure the temperature around the power supply path (200).

[0051] The above heating unit (400) may be placed on at least one side of the power supply path (200). The heating unit (400) may be configured to apply heat to the power supply path (200).

[0052] The above control unit (500) may be configured to be electrically or communicatively connected to the temperature sensing unit (300) and the heating unit (400). The control unit (500) may be configured to receive temperature information of the power supply path (200) measured by the temperature sensing unit (300). The control unit (500) may be configured to control the heat application of the heating unit (400) based on the temperature measurement result of the temperature sensing unit (300).

[0053] According to the above-described embodiment of the present invention, when conducting a rapid charging test of a battery (10), the temperature of the side where the power supply path (200) and the battery (10) are connected and the side where the power supply unit (100) is connected can become almost the same. Accordingly, heat can be suppressed from escaping to the outside through the power supply path (200).

[0054] Accordingly, according to the above-described embodiment of the present invention, a rapid charging test can be conducted using a single battery (10) in a situation almost identical to that of multiple batteries. Furthermore, during a rapid charging test of a battery (10), the temperature of the battery (10) can be accurately measured during rapid charging.

[0055] Using a single battery module, testing can be performed to simulate conditions nearly identical to those of a battery pack equipped with multiple battery modules. This allows for accurate temperature prediction during rapid charging of a battery pack using a single battery module.

[0056] More specifically, the control unit (500) may be configured to uniformly maintain the temperature of the power supply path (200) according to the temperature of the power supply path (200) measured by the temperature sensing unit (300).

[0057] Additionally, the control unit (500) may be configured to control whether the heating unit (400) operates according to the temperature of the power supply path (200) measured by the temperature sensing unit (300).

[0058] For example, the control unit (500) can control the heating unit (400) to operate and apply heat to a specific portion of the power supply path (200) when the temperature of a specific portion of the power supply path (200) measured by the temperature sensing unit (300) is below a specific temperature. Accordingly, the temperature of a specific portion of the power supply path (200) can be maintained uniformly.

[0059] In particular, during a rapid charging test of a battery (10), the temperature may become lower the farther away from the battery (10) in the power supply path (200), but according to the above-described embodiment of the present invention, the temperature of the side of the power supply path (200) where the battery (10) is installed may be uniformly maintained, thereby suppressing heat from escaping toward the power supply unit (100).

[0060]

[0061] FIG. 2 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention, and FIG. 3 is a perspective view of a battery test device according to another embodiment of the present invention.

[0062] The temperature sensing unit (300) may be configured to be in direct contact with the power supply path (200). Alternatively, the temperature sensing unit (300) may be positioned to be spaced apart from the power supply path (200) by a predetermined distance.

[0063] Additionally, a plurality of temperature sensing units (300) may be provided. For example, as in the embodiments illustrated in FIGS. 2 and 3, the temperature sensing unit (300) may include a first temperature sensing unit (310) and a second temperature sensing unit (320).

[0064] The first temperature sensing unit (310) and the second temperature sensing unit (320) may be provided on both sides of the length direction of the power supply path (200). The first temperature sensing unit (310) may be positioned further away from the battery (10) than the second temperature sensing unit (320). For example, the first temperature sensing unit (310) may be provided on the power supply unit (100) side. The second temperature sensing unit (320) may be provided on the battery (10) side.

[0065] At this time, the control unit (500) may be configured to maintain the temperature difference between the temperature measured by the first temperature sensing unit (310) and the temperature measured by the second temperature sensing unit (320) below a specific temperature. In this specification, the temperature measured by the first temperature sensing unit (310) is defined as the first measured temperature, and the temperature measured by the second temperature sensing unit (320) is defined as the second measured temperature.

[0066] For example, the difference between the first measured temperature and the second measured temperature may be maintained to be less than 0.5°C. The control unit (500) may be configured to maintain the difference between the first measured temperature and the second measured temperature to be less than 0.5°C.

[0067] Meanwhile, the heating unit (400) may be configured to be in direct contact with the power supply path (200). Alternatively, the heating unit (400) may be positioned to be spaced apart from the power supply path (200) by a predetermined distance. The heating unit (400) may be configured to face the temperature sensing unit (300) with the power supply path (200) interposed therebetween.

[0068] When conducting a rapid charging test of a battery (10), the temperature may decrease as the distance from the battery (10) increases along the power supply path (200). That is, the first measured temperature may be lower than the second measured temperature. Accordingly, as in the embodiment illustrated in FIG. 3, the heating unit (400) may be provided on the side of the first temperature sensing unit (310).

[0069] At this time, the control unit (500) may be configured to operate the heating unit (400) provided on the first temperature sensing unit (310) side when the difference between the first measured temperature and the second measured temperature is greater than a specific temperature.

[0070] According to the above-described embodiment of the present invention, since the temperature on both sides of the longitudinal direction of the power supply path (200) can be maintained almost identically, heat can be suppressed from escaping toward the power supply unit (100) during a rapid charging test of the battery (10).

[0071]

[0072] FIG. 4 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention, and FIG. 5 is a perspective view of a battery test device according to another embodiment of the present invention.

[0073] A plurality of heating units (400) may be provided. For example, as in the embodiments illustrated in FIGS. 4 and 5, the heating unit (400) may include a first heating unit (410) and a second heating unit (420).

[0074] The first heating unit (410) and the second heating unit (420) may be provided on both sides of the length direction of the power supply path (200). The first heating unit (410) may be positioned further away from the battery (10) than the second heating unit (420). For example, the first heating unit (410) may be provided on the power supply unit (100) side. The second heating unit (420) may be provided on the battery (10) side.

[0075] Additionally, the first heating unit (410) may be provided on the side of the first temperature sensing unit (310), and the second heating unit (420) may be provided on the side of the second temperature sensing unit (320). The first heating unit (410) may be arranged to face the first temperature sensing unit (310) with the power supply path (200) therebetween. The second heating unit (420) may be arranged to face the second temperature sensing unit (320) with the power supply path (200) therebetween.

[0076] The control unit (500) may be configured to operate either the first heating unit (410) or the second heating unit (420) when the temperature measured by the first temperature sensing unit (310) and the temperature measured by the second temperature sensing unit (320) are different from each other. That is, the control unit (500) may be configured to operate the heating unit (400) on the side equipped with the temperature sensing unit (300) that measures the lower temperature when the first measured temperature and the second measured temperature are different from each other. In particular, when the difference between the first measured temperature and the second measured temperature is equal to or greater than a specific temperature, either the first heating unit (410) or the second heating unit (420) may be operated. For example, the specific temperature may be 0.5°C.

[0077] According to the above-described embodiment of the present invention, by operating the heating unit (400) provided in the lower temperature portion of the two sides of the power supply path (200) to maintain the first measurement temperature and the second measurement temperature almost the same, the temperature difference between the two sides of the power supply path (200) can be maintained below a specific temperature.

[0078] In addition, the control unit (500) may be configured to stop either the first heating unit (410) or the second heating unit (420) when either the first heating unit (410) or the second heating unit (420) is operated and the difference between the temperature measured by the first temperature sensing unit (310) and the temperature measured by the second temperature sensing unit becomes less than a specific temperature. That is, the control unit (500) may be configured to stop the operation of the heating unit (400) when the difference between the first measured temperature and the second measured temperature becomes less than a specific temperature after the heating unit (400) is operated. For example, the specific temperature may be 0.5°C.

[0079] According to the above-described embodiment of the present invention, since the temperature difference on both sides in the longitudinal direction of the power supply path (200) can be maintained so as not to exceed a specific temperature, heat can be suppressed from escaping toward the power supply unit (100) during a rapid charging test of the battery (10).

[0080] In addition, according to the above-described embodiment of the present invention, when the first measurement temperature and the second measurement temperature are not the same and the difference is less than a certain temperature, the heating unit (400) is prevented from operating, so that test efficiency and accuracy can be secured.

[0081]

[0082] FIG. 6 is a schematic diagram illustrating the configuration of a battery test device according to another embodiment of the present invention, and FIG. 7 is a perspective view of a battery test device according to another embodiment of the present invention.

[0083] Meanwhile, the power supply path (200) may have multiple paths. For example, as in the embodiments illustrated in FIGS. 6 and 7, the power supply path (200) may include a first path (210) and a second path (220). The first path (210) may be configured to be connected to the power supply unit (100). The first path (210) may be configured to provide a path through which power is supplied from the power supply unit (100).

[0084] The second path (220) may be configured to be connected to the first path (210) and the electrode terminal (11) of the battery (10). That is, one side of the second path (220) may be configured to be connected to the first path (210), and the other side may be configured to be connected to the electrode terminal (11). The second path (220) may be configured to provide a path through which power is supplied from the first path (210).

[0085] According to the above-described embodiment of the present invention, since the power supply path (200) is configured in two stages, a second path (220) can be connected to the commercialized first path (210) to conduct a rapid charging test of the battery (10). This ensures test convenience.

[0086] Additionally, the temperature sensing unit (300) and the heating unit (400) may be provided on the second path (220) side.

[0087] As a more specific example, the first temperature sensing unit (310) and the second temperature sensing unit (320) may be provided on both sides of the second path (220) in the longitudinal direction. The first temperature sensing unit (310) may be positioned further away from the battery (10) than the second temperature sensing unit (320). For example, the first temperature sensing unit (310) may be provided on the first path (210) side. The second temperature sensing unit (320) may be provided on the battery (10) side.

[0088] Additionally, the first heating unit (410) and the second heating unit (420) may be provided on both sides of the length direction of the power supply path (200). The first heating unit (410) may be positioned further away from the battery (10) than the second heating unit (420). For example, the first heating unit (410) may be provided on the side of the first path (210). The second heating unit (420) may be provided on the side of the battery (10).

[0089] Additionally, the first heating unit (410) may be provided on the side of the first temperature sensing unit (310), and the second heating unit (420) may be provided on the side of the second temperature sensing unit (320). The first heating unit (410) may be arranged to face the first temperature sensing unit (310) with the second path (220) therebetween. The second heating unit (420) may be arranged to face the second temperature sensing unit (320) with the second path (220) therebetween.

[0090] The control unit (500) may be configured to operate either the first heating unit (410) or the second heating unit (420) when the temperature measured by the first temperature sensing unit (310) and the temperature measured by the second temperature sensing unit (320) are different from each other. That is, the control unit (500) may be configured to operate the heating unit (400) on the side equipped with the temperature sensing unit (300) that measures the lower temperature when the first measured temperature and the second measured temperature are different from each other. In particular, when the difference between the first measured temperature and the second measured temperature is equal to or greater than a specific temperature, either the first heating unit (410) or the second heating unit (420) may be operated. For example, the specific temperature may be 0.5°C.

[0091] According to the above-described embodiment of the present invention, by operating the heating unit (400) provided on the lower temperature portion of the two sides of the second path (220) to maintain the first measurement temperature and the second measurement temperature almost the same, the temperature difference between the two sides of the second path (220) can be maintained below a specific temperature.

[0092] In addition, the control unit (500) may be configured to stop either the first heating unit (410) or the second heating unit (420) when either the first heating unit (410) or the second heating unit (420) is operated and the difference between the temperature measured by the first temperature sensing unit (310) and the temperature measured by the second temperature sensing unit becomes less than a specific temperature. That is, the control unit (500) may be configured to stop the operation of the heating unit (400) when the difference between the first measured temperature and the second measured temperature becomes less than a specific temperature after the heating unit (400) is operated. For example, the specific temperature may be 0.5°C.

[0093] According to the above-described embodiment of the present invention, since the temperature difference on both sides in the longitudinal direction of the second path (220) can be maintained so as not to exceed a specific temperature, heat can be suppressed from escaping toward the first path (210) during a rapid charging test of the battery (10).

[0094] In addition, according to the above-described embodiment of the present invention, when the first measurement temperature and the second measurement temperature are not the same and the difference is less than a certain temperature, the heating unit (400) is prevented from operating, so that test efficiency and accuracy can be secured.

[0095]

[0096] Meanwhile, referring to FIGS. 3, 5, and 7, a battery test device (1) according to one embodiment of the present invention may further include a receiving portion. The receiving portion (600) may be configured to receive at least a portion of the power supply path (200). In particular, in the embodiment illustrated in FIG. 7, the receiving portion (600) may be configured to receive the second path (220).

[0097] The receiving portion (600) may be made of an insulating material. In addition, the receiving portion (600) may be made of an insulating material.

[0098] Additionally, the receiving portion (600) may be configured to receive a temperature sensing portion (300) and a heating portion (400). That is, the receiving portion (600) may be configured to be modularized by receiving the second path (220), the temperature sensing portion (300), and the heating portion (400) therein.

[0099] According to the above-described embodiment of the present invention, a rapid charging test of a battery (10) can be performed by connecting a modularized second path (220), a temperature sensing unit (300), and a heating unit (400) to a commercialized power supply unit (100) and a power supply path (200) (e.g., a first path (210)).

[0100] Meanwhile, the receiving portion (600) may be configured to be openable on at least one side. Accordingly, one side of the receiving portion (600) may be opened to connect the second path (220) and other components.

[0101] Furthermore, as in the embodiments illustrated in FIGS. 3, 5, and 7, one side of the power supply path (200) may be connected to the electrode terminal (11) by a fastening member (700). The fastening member (700) may be formed of a bolt or the like. The fastening member (700) may be configured to penetrate the power supply path (200). Accordingly, the battery test device (1) may be configured to be detachably connected to the battery (10).

[0102] In the embodiment illustrated in FIG. 7, one side of the second path (220) may be configured to be connected to the first path (210), and the other side may be configured to be connected to the electrode terminal (11). One side of the second path (220) may be connected to the first path (210) by a first fastening portion (710), and the other side may be connected to the electrode terminal (11) by a second fastening portion (720). The first fastening portion (710) may be configured to pass through the second path (220) and the first path (210). The second fastening portion (720) may be configured to pass through the second path (220) and the electrode terminal (11). Accordingly, the second path (220) may be configured to be detachably connected to the battery (10) and the first path (210).

[0103] According to the above-described embodiment of the present invention, the modularized second path (220), temperature sensing unit (300), and heating unit (400) can be manufactured separately, so that a rapid charging test of the battery (10) can be easily performed by connecting them to an existing battery (10) and power supply unit (100).

[0104]

[0105] Although the present invention has been described above with reference to limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

Claims

1. In a device for testing a battery equipped with electrode terminals, A power supply configured to supply power; A power supply path configured to provide a path for supplying power from the power supply to the electrode terminal, the power supply path having one end connected to the electrode terminal and the other end connected to the power supply; A temperature sensing unit arranged on at least one side of the power supply path and configured to measure the temperature of the power supply path; A heating unit arranged on at least one side of the power supply path and configured to apply heat to the power supply path; and A battery test device characterized by including a control unit configured to control the application of heat to the heating unit according to the temperature measurement result of the temperature sensing unit.

2. In paragraph 1, A battery test device characterized in that the control unit is configured to uniformly maintain the temperature of the power supply path according to the temperature of the power supply path measured by the temperature sensing unit.

3. In paragraph 1, A battery test device characterized in that the control unit is configured to control whether the heating unit operates according to the temperature of the power supply path measured by the temperature sensing unit.

4. In paragraph 1, The above temperature sensing part A battery test device characterized by including a first temperature sensing unit and a second temperature sensing unit provided on both sides of the longitudinal direction of the power supply path.

5. In paragraph 4, A battery test device characterized in that the control unit is configured to maintain the temperature difference measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit below a specific temperature.

6. In paragraph 4, A battery test device characterized in that the heating unit is provided on the side of the first temperature sensing unit.

7. In paragraph 4, The above heating part A battery test device characterized by including a first heating unit and a second heating unit provided on both sides of the longitudinal direction of the power supply path.

8. In paragraph 7, The above control unit A battery test device characterized in that it is configured to operate either the first heating unit or the second heating unit when the difference between the temperature measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit is greater than a specific temperature.

9. In paragraph 8, The above control unit A battery test device characterized in that when either the first heating unit or the second heating unit is operated and the difference between the temperature measured by the first temperature sensing unit and the temperature measured by the second temperature sensing unit becomes less than a specific temperature, either the first heating unit or the second heating unit is configured to stop.

10. In paragraph 1, The above power supply path is A first path configured to be connected to the power supply unit; A battery test device characterized by comprising a second path configured to be connected to the first path and the electrode terminal.

11. In paragraph 10, A battery test device characterized in that the temperature sensing unit and the heating unit are provided on the second path side.

12. In paragraph 10, A battery test device characterized in that it further comprises a receiving portion configured to receive the second path.

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