WO2016062194A1 - 电池测试平台 - Google Patents

电池测试平台 Download PDF

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Publication number
WO2016062194A1
WO2016062194A1 PCT/CN2015/091457 CN2015091457W WO2016062194A1 WO 2016062194 A1 WO2016062194 A1 WO 2016062194A1 CN 2015091457 W CN2015091457 W CN 2015091457W WO 2016062194 A1 WO2016062194 A1 WO 2016062194A1
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WO
WIPO (PCT)
Prior art keywords
battery
hinge
hinge arm
plate
pressure plate
Prior art date
Application number
PCT/CN2015/091457
Other languages
English (en)
French (fr)
Inventor
朱红萍
鲁怀敏
何向明
张宏生
方海峰
魏本建
查于东
李建军
王莉
Original Assignee
江苏华东锂电技术研究院有限公司
清华大学
沙洲职业工学院
江苏科技大学
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Application filed by 江苏华东锂电技术研究院有限公司, 清华大学, 沙洲职业工学院, 江苏科技大学 filed Critical 江苏华东锂电技术研究院有限公司
Publication of WO2016062194A1 publication Critical patent/WO2016062194A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]

Definitions

  • the present invention relates to a battery testing platform, and more particularly to a battery testing platform that can apply pressure to a battery during battery testing.
  • lithium-ion batteries must be tested for charge and discharge performance before leaving the factory. There are two main purposes: (1) Screening of lithium-ion batteries with consistent performance. If the consistency of the lithium ion battery is poor, the performance of the lithium ion battery pack after series and parallel connection is unstable, and the cycle life is short; (2) the lithium ion battery is formed.
  • the so-called chemical formation refers to the process of charging the lithium-ion battery for the first time.
  • a battery testing platform includes a battery rack, a controller, and a battery testing unit, the controller and the battery testing unit are disposed on the battery rack, and the battery testing unit includes a pressing device;
  • the pressing device comprises a bottom plate, a fixing frame, a pressing plate and a hinge device, the bottom plate is disposed on the battery frame, the fixing frame is fixed on the bottom plate, and the pressing plate is connected to the fixing frame through the hinge device, the hinge device Separating the pressure plate from the bottom plate, and having an accommodation space between the pressure plate and the bottom plate for accommodating the battery cells;
  • the hinge device includes a hinge base, a first hinge arm, a second hinge arm, a first pin shaft, a second pin shaft, a third pin shaft and a rocker, the hinge seat being coupled to the fixed frame, the first a hinge arm is hinged to the hinge seat by the first pin shaft, the second hinge arm is hinged to the first hinge arm by the second pin shaft, and the second hinge arm passes the third pin a shaft is hingedly connected to the pressure plate, the handle is fixedly coupled to the first hinge arm, and the handle is configured to drive the first hinge arm to rotate, so that the first hinge arm drives the second hinge arm to perform Rotating, thereby driving the pressure plate closer to or away from the bottom plate;
  • the hinge device has a dead center position, wherein the first hinge arm and the second hinge arm are rotated to make the first pin shaft, the second pin shaft and the third pin shaft the same a position when the line is straight, when the first hinge arm and the second hinge arm reach the dead point position by the handle, the battery sheet placed between the pressure plate and the bottom plate The body is compressed.
  • the lithium ion battery testing platform provided by the invention can pressurize the battery cell during the battery testing process, and can effectively solve the problem of internal bubble accumulation during the formation of the battery cell (first charging), and can prevent the battery cell from being During the formation process, expansion and deformation occur, which can improve the inherent quality and appearance of the battery cell;
  • the pressing device utilizes the principle of mechanical dead center to design a structure that can be quickly clamped and quickly opened, which is convenient to use and adjust. The action is quick and reliable, which is beneficial to the operator to operate, reduce the auxiliary time, speed up the process of pressurizing and clamping the battery in the battery formation process, and improve the production efficiency; the pressing device has a simple structure and is suitable for mass processing. Manufacturing.
  • FIG. 1 is a front view of a lithium ion battery test platform according to an embodiment of the present invention.
  • FIG. 2 is a side view of a lithium ion battery test platform according to an embodiment of the present invention.
  • FIG. 3 is a top plan view of a lithium ion battery test platform according to an embodiment of the present invention.
  • 4a, 4b and 4c are respectively a front view, a side view and a plan view of a battery rack frame of a lithium ion battery test platform according to an embodiment of the present invention.
  • FIG. 5 is a top plan view of a battery rack spacer of a lithium ion battery test platform according to an embodiment of the present invention.
  • 6a, 6b, and 6c are respectively a front view, a side view, and a plan view of a battery rack partition provided with a battery test unit of a lithium ion battery test platform according to an embodiment of the present invention.
  • Figure 7 is a perspective view of a pressurizing device of a lithium ion battery test platform according to an embodiment of the present invention.
  • FIG. 8 is a top plan view of a pressurizing device of a lithium ion battery test platform according to an embodiment of the present invention.
  • Fig. 9 is a front elevational view showing the state in which the pressurizing device of the section IX-IX of Fig. 8 is locked.
  • Fig. 10 is a front elevational view showing the pressing device of the section IX-IX of Fig. 8 in an open state.
  • Figure 11 is a side elevational view showing the locked state of the pressurizing device of the section XI-XI of Figure 8;
  • Lithium-ion battery test platform 1 Battery holder 10 Battery rack frame 100 Rectangular base 110 First bottom frame C profile 111 Second bottom frame C profile 112 Third bottom frame C profile 113 Frame 120 Inverted U-shaped component 121 Inverted U-shaped C profile 1211 Side vertical cover 1212 Top C profile 122 Support plate 200 Support plate frame 210 First support plate frame C profile 211 Second support plate C profile 212 Third support plate C profile 213 Rigid plate 220 Double L-shaped chute 230 Controller 20 Battery test unit 30 Pressurizing device 300 Bottom plate 310 Fixed frame 320 Support 3210 Fixing frame 3220 First through hole 3222 Second through hole 3224 Press plate 330 Groove 3320 Hinge device 340 Hinge seat 3410 First connection segment 3412 Second connection segment 3414 Third connection segment 3418 First hinge arm 3420 Second hinge arm 3430 First pin 3440 Second pin 3450 Third pin 3460 handle 3470 Connecting beam 3472 Control handle 3474 bolt 3480 Gasket 3490 Elastic component 360 Limit baffle 370 angle iron 380 Battery clip 400 Temperature sensor 500 Indicator light
  • the lithium ion battery test platform 1 used in the embodiment of the present invention includes a battery rack 10 , a controller 20 , and a battery test unit 30 .
  • the controller 20 and the battery test unit 30 are disposed on the battery rack 10.
  • the controller 20 is a voltage controller for real-time monitoring of voltage fluctuations of the battery 50 to be charged and discharged.
  • the structure of the battery holder 10 is not limited as long as it functions to support the controller 20 and the battery test unit 30.
  • the battery rack 10 includes a battery rack frame 100 and a support plate 200 .
  • the battery rack frame 100 includes a rectangular base 110 and a frame 120 fixed to the rectangular base 110.
  • the rectangular base 110 includes two first bottom frame C profiles 111, two second bottom frame C profiles 112, and two third bottom frame C profiles 113.
  • the two first bottom frame C profiles 111 and the two second bottom frame C profiles 112 form a first rectangular frame
  • the third bottom frame C profile 113 is parallel to the two first bottom frame C profiles 111.
  • the C-profile according to the present invention refers to an elongated steel material having a groove shape in cross section.
  • the frame body 120 includes two inverted U-shaped components 121 and an elongated top C-profile 122.
  • the two inverted U-shaped components 121 are arranged in parallel.
  • Each inverted U-shaped assembly 121 includes two inverted U-shaped C-profiles 1211 and one side vertical cover 1212 of different sizes.
  • the two inverted U-shaped C profiles 1211 of different sizes are nested together and arranged in parallel to form an inverted U-shaped frame.
  • the side vertical cover 1212 is fixed between the two inverted U-shaped C profiles 1211 of different sizes.
  • the inverted U-shaped component 121 is fixed to the first bottom frame C profile 111.
  • the elongated top C profile 122 is secured between the tops of the two pairs of inverted U-shaped assemblies 121.
  • the specific shape and size of the battery rack frame 100 are not limited to the above structures, and may be selected according to actual needs.
  • the support plate 200 is used to support the battery test unit 30.
  • the support plate 200 is fixed to the battery frame 100.
  • the support plate 200 is fixed to the frame 120 and disposed in parallel with the rectangular base 110.
  • the number of the support plates 200 may be plural.
  • the plurality of support plates 200 are fixed to the frame body 120 in parallel intervals.
  • At least one battery test unit 30 is disposed on each support plate 200.
  • each of the support plates 200 is provided with two rows of spaced apart battery test units 30, and each row includes a plurality of battery test units 30.
  • Each support plate 200 includes a support plate frame 210 and two rigid plates 220.
  • the support plate frame 210 includes two first support plate frame C profiles 211 , two second support plate frame C profiles 212 , and a third support plate frame C profile 213 .
  • the two first support plate frame C profiles 211 and the two second support plate frame C profiles 212 form a second rectangular frame.
  • the third support frame C profile 213 is fixed in parallel with the two first support plate frame C profiles 211 in the second rectangular frame, and divides the second rectangular frame into two third rectangular frames.
  • the two rigid plates 220 are respectively fixed in the two third rectangular frames.
  • the rigid plate 220 is used to support the battery test unit 30. It can be understood that the specific shape and size of the support plate 200 are not limited to the above structures, and may be selected according to actual needs.
  • one side of the support plate 200 defines at least two double L-shaped chutes 230.
  • Each of the two double L-shaped chutes 230 corresponds to one of the battery test units 30.
  • Two L-shaped chutes in each of the double L-shaped chutes 230 are spaced apart and disposed toward the back to form a T-shaped structure.
  • the at least two double L-shaped chutes 230 may be defined on the second support plate frame C profile 212.
  • the number of battery test units 30 may be plural.
  • Each battery test unit 30 includes a pressurizing device 300 disposed on the support plate 200.
  • the pressing device 300 includes a bottom plate 310, a fixed frame 320, a pressure plate 330, and a hinge device 340.
  • the bottom plate 310 is disposed on the support plate 200, and the fixed frame 320 is fixed on the bottom plate 310.
  • the pressure plate 330 is connected to the fixing frame 320 by the hinge device 340.
  • the hinge device 340 is spaced apart from the bottom plate 310.
  • the pressing plate 330 and the bottom plate 310 have an accommodation space for the to be tested. Battery 50.
  • the hinge device 340 includes a hinge base 3410, a first hinge arm 3420, a second hinge arm 3430, a first pin shaft 3440, a second pin shaft 3450, a third pin shaft 3460, and a handle 3470.
  • the hinge base 3410 is coupled to the fixed frame 320
  • the first hinge arm 3420 is hinged to the hinge base 3410 by the first pin shaft 3440
  • the second hinge arm 3430 passes the second pin shaft 3450 is hinged to the first hinge arm 3420
  • the second hinge arm 3430 is hinged to the pressure plate 330 by the third pin 3460.
  • the handle 3470 is fixedly coupled to the first hinge arm 3420, and the handle 3470 is configured to drive the first hinge arm 3420 to rotate, so that the first hinge arm 3420 drives the second hinge arm 3430 to rotate.
  • the pressure plate 330 is brought closer to or away from the bottom plate 310.
  • the hinge device 340 has a dead center position, wherein the first hinge arm 3420 and the second hinge arm 3430 are rotated to the first pin shaft 3440, the second pin shaft 3450, and the first The position where the three pins 3460 are in the same straight line.
  • the battery 50 is pressed.
  • the pressing device 300 is in a locked state when the first hinge arm 3420 and the second hinge arm 3430 have not reached the dead state.
  • the pressurizing device 300 is in an open state.
  • the bottom plate 310 and the pressure plate 330 are rigid plate-like structures.
  • the bottom plate 310 and the pressing plate 330 are arranged in parallel, and the pressing plate 330 applies pressure to the battery to be tested 50 in the thickness direction thereof and in the direction X facing the bottom plate 310. Thereby, the battery to be tested 50 is pressed.
  • the pressing plate 330 can be further provided with a groove 3320 through which the pressing plate 330 can be caught on the fixing frame 320, so that the pressing plate 330 can only move in the direction X, and cannot be in other directions. mobile.
  • the resistance of the bottom plate 310 and the pressure plate 330 is equal to higher than 500 M ⁇ to prevent occurrence of leakage, short circuit, and the like.
  • the bottom plate 310 and the pressing plate 330 are both subjected to anodizing insulation treatment, by which not only the bottom plate 310 and the pressing plate 330 can be insulated, but also the bottom plate 310 and the pressing plate 330 are good. Heat transfer performance and corrosion resistance.
  • the bottom plate 310 and the pressure plate 330 are chamfered on the edge of the side on which the battery to be tested 50 is placed and removed, which prevents the battery to be tested 50 from being scratched during loading and unloading. .
  • the battery to be tested 50 is a square or sheet-shaped flexible package battery.
  • the fixing frame 320 is configured to arrange the hinge device 340 and the pressing plate 330 and the bottom plate 310 in the direction X.
  • the fixing frame 320 can include a fixing frame 3220 and a plurality of supporting bodies 3210.
  • the plurality of support bodies 3210 are for supporting, fixing and spacing the fixing frame 3220 and the bottom plate 310. Both ends of the support body 3210 are fixedly connected to the bottom plate 310 and the fixing frame 3220, respectively.
  • the plurality of supports 3210 may be disposed at edges of the bottom plate 310.
  • the support body 3210 can be fixedly connected to the bottom plate 310 by bolts.
  • the pressing plate 330 can be caught on the plurality of supporting bodies 3210 through the grooves 3320, so that the pressing plate 330 can only move along the supporting body in the direction X, but cannot move in other directions, thereby ensuring the The pressure plate 330 is balancedly close to or away from the bottom plate 310.
  • the hinge device 340 is coupled to the holder 3220.
  • the fixing frame 3220 can be a fixed plate or a plurality of fixed frames.
  • the holder 3220 has a first through hole 3222 in the direction X for connecting the holder 3220 to the hinge device 340.
  • the support body 3210 and the fixing frame 3220 have a hollow structure, so that the fixing frame 320 has a lighter weight, thereby reducing the weight of the entire pressing device 300, and making the pressing device 300 more convenient to use.
  • the support body 3210 is a column, the number of the columns is four, the fixing frame 3220 is the fixed frame, and the number of the fixed frames is two, and each of the fixed frames is fixed.
  • the frame forms a U-shaped frame with the two columns, respectively, and the column is fixed to the bottom plate 310 by bolts at the edge of the bottom plate 310.
  • the two U-shaped frames are arranged in parallel.
  • the U-shaped frame is integrally formed.
  • the hinge device 340 is coupled to the mount 3220 by the hinge mount 3410. Specifically, one end of the hinge seat 3410 is connected to the fixing frame 3220, and the other end is hinged to the first hinge arm 3420.
  • the hinge base 3410 can be fixedly connected to the fixing frame 3220 or can be movably connected to the fixing frame 3220.
  • the hinge base 3410 is fixedly coupled to the fixing frame 3220.
  • the hinge seat 3410 is located at a side of the fixing frame 3220 facing the pressure plate 330, and a side of the hinge seat 3410 facing the fixing frame 3220 is provided with a screw hole through which the first bolt passes.
  • the through hole 3222 is screwed onto the screw hole of the hinge base 3410, so that the hinge base 3410 is fixedly connected to the fixing frame 3220.
  • the hinge mount 3410 is movably coupled to the mount 3220.
  • the hinge base 3410 includes a first connecting section 3412 and a second connecting section 3414 that are coaxially disposed in the direction X and are sequentially connected.
  • the first connecting portion 3412 extends through the first through hole 3222 and can slide in the direction X in the first through hole 3222, and the first connecting portion 3412 is away from the first through hole 3222
  • One side of the pressing plate 330 is fixedly connected to a gasket 3490. When the pressing device 300 is in an open state, the hinge seat 3410 is caught by the gasket 3490 on the side of the first through hole 3222 away from the pressing plate 330.
  • the holder 3220 is placed such that the hinge seat 3410 does not disengage from the holder 3220.
  • the second connecting portion 3414 is located at a side of the first through hole 3222 adjacent to the pressing plate 330.
  • the hinge seat 3410 faces the pressing plate 330 at the first through hole 3222.
  • One side of the bracket 340 is fastened to the fixing frame 3220, and the hinge device 340 is fixed, and the fixing frame 3220 is applied to the hinge device 340 and the pressure plate 330 through the second connecting portion 3414.
  • the pressure in the direction X is such that the battery to be tested 50 is pressed.
  • the second connecting portion 3414 forms a stepped surface 3416 facing away from the pressing plate 330 at a position connected to the first connecting portion 3412.
  • the stepped surface 3416 and the fixing portion are fixed.
  • the frame 3220 is in contact such that the hinge block 3410 is caught on the holder 3220.
  • the first connecting section 3412 can be fixedly connected to the spacer 3490 by bolts 3480.
  • the spacer 3490 has a hole therein, and a side of the first connecting portion 3412 facing away from the pressing plate 330 is provided with a screw hole, and the bolt 3480 passes through the hole of the spacer 3490 to connect with the first connection.
  • the screw hole of the segment 3412 is screwed such that the first connecting segment 3412 is fixedly coupled to the spacer 3490.
  • the fixing frame 3220 may further have a second through hole 3224 disposed coaxially with the first through hole 3222 in the direction X, the second through hole 3224 being located at the first through hole 3222 facing the pressure plate 330
  • the second connecting portion 3414 can penetrate the second through hole 3224 and slide in the second through hole 3224 in the direction X.
  • the second through hole 3224 can further restrict the movement of the second connecting portion 3414 in a direction other than the direction X, thereby preventing the first hinge arm 3420 and the second hinge arm 3430 from crossing the dead position to generate a loss. Steady situation.
  • the radius of the second through hole 3224 is larger than the radius of the first through hole 3222.
  • the first through hole 3222 and the second through hole 3224 together form a stepped hole.
  • the first through hole 3222 and the second through hole 3224 are respectively located at a side of the hollow fixing frame 3220 facing away from the pressing plate 330 and a side facing the pressing plate 330.
  • the hinge seat 3410 can be hinged to the first hinge arm 3420 through the second connecting section 3414.
  • the hinge base 3410 may further include a third connecting section 3418, the third connecting section 3418 being located at a side of the second connecting section 3414 away from the first connecting section 3412 and with the second connecting section
  • the 3414 is coaxially disposed, and the hinge seat 3410 is hinged to the first hinge arm 3420 through the third connecting portion 3418.
  • the first connecting section 3412, the second connecting section 3414 and the third connecting section 3418 are integrally formed, so that the connection of the hinge device 340 and the fixing frame 320 is stronger.
  • the first connecting portion 3412 and the first through hole 3222, the second connecting portion 3414 and the second through hole 3224 are matched by a small gap hole shaft, so that the first connecting portion 3412 and the first connecting portion 3412 are
  • the second connecting portion 3414 can slide freely in the direction X in the first through hole 3222 and the second through hole 3224, respectively, without causing the hinge seat 3410 to generate too much radial sway to cause the first A hinge arm 3420 and the second hinge arm 3430 pass through the dead center position to cause instability.
  • the hinge seat 3410 may further include a resilient member 360 disposed in the direction X between the second connecting portion 3414 and the mounting bracket 3220.
  • the elastic member 360 When the pressing device 300 is in the locked state, the elastic member 360 is in a compressed state, and provides a pressure to the hinge seat 3410 against the pressure plate 330 to ensure the effective pressure of the pressure plate 330 to be tested.
  • the elastic member 360 is not at the elastic compression limit, that is, it can be further elastically compressed, so that the distance between the pressure plate 330 and the bottom plate 310 can be adjusted to adapt to different manufacturing batteries 50 due to manufacturing errors.
  • the elastic member 360 can be disposed between the stepped surface 3416 and the fixing frame 3220.
  • the elastic element can be a spring, an elastic column or a spring.
  • the elastic element is a butterfly spring, and the butterfly spring can be sleeved on the first connecting section 3412, the butterfly spring has opposite first and second ends in the deformation direction thereof, the butterfly shape A first end of the spring is in contact with the stepped surface 3416, and a second end of the spring is in contact with the retainer 3220.
  • the first hinge arm 3420, the second hinge arm 3430, the first pin shaft 3440, the second pin shaft 3450, the third pin shaft 3460, and the handle 3470 constitute a dead center mechanism, wherein
  • the first hinge arm 3420 is coupled to the fixed frame 320 by the hinge seat 3410
  • the second hinge arm 3430 is coupled to the pressure plate 330 when the first hinge arm 3420 and the second hinge arm 3430 are at the handle 3470.
  • the battery to be tested 50 placed between the pressure plate 330 and the bottom plate 310 is pressed.
  • the first hinge arm 3420 and the second hinge arm 3430 have opposite first and second ends respectively in a longitudinal direction thereof, and the first end of the first hinge arm 3420 passes through the first pin 3440 is hinged with the hinge seat 3410, and the second end of the first hinge arm 3420 is hinged to the first end of the second hinge arm 3430 by the second pin shaft 3450, the second hinge arm 3430 The second end is hinged to the pressure plate 330 by the third pin shaft 3460.
  • the first pin shaft 3440, the second pin shaft 3450 and the third pin shaft 3460 are arranged in parallel with each other to ensure that the rotation axes of the first hinge arm 3420 and the second hinge arm 3430 are parallel to each other. .
  • the pressurizing device 300 can further include a limit baffle 370.
  • the limiting baffle 370 is disposed on a rotation track of the second hinge arm 3430. When the second hinge arm 3430 reaches the dead position, the limiting baffle 370 is configured to block the second hinge. The arm 3430 continues to rotate, thereby preventing the first hinge arm 3420 and the second hinge arm 3430 from being unstable beyond the dead point position, and ensuring the reliability of the lithium ion battery pressurizing device 300.
  • the pressurizing device 300 may further include an angle iron 380.
  • the pressure plate 330 can be hinged to the second hinge arm 3430 by the angle iron 380.
  • the angle iron 380 includes two integrally formed and mutually perpendicular side plates, one of which is superposed with the pressure plate 330 and fixedly connected to the pressure plate 330, and the other side plate is disposed perpendicular to the pressure plate 330 and passes through
  • the third pin shaft 3460 is hinged with the second hinge arm 3430.
  • a side plate disposed in superposition with the pressure plate 330 may be fixedly coupled to the pressure plate 330 by the bolt 3480.
  • the limiting baffle 370 can be disposed on a side plate of the angle iron 380 disposed perpendicular to the pressure plate 330.
  • the limiting baffle 370 is weldable on a side plate perpendicular to the angle iron 380 and the pressure plate 330.
  • the number and position of the hinge device 340 are not limited as long as the platen 330 is spaced from the bottom plate 310 and can move the platen 330 toward or away from the bottom plate 310.
  • the hinge device 340 may be disposed at a position of a center of gravity of the pressure plate 330.
  • the plurality of hinge devices 340 may form a symmetrical structure to drive the pressure plate 330 symmetrically close to or away from the bottom plate 310.
  • the number of the hinge devices 340 is four, and the four hinge points of the four hinge devices 340 hinged with the pressure plate 330 form a parallelogram, and the four hinge devices can drive the pressure plate 330 symmetrically.
  • the bottom plate 310 is close to or away from the bottom plate 310, and the four hinge devices can evenly apply force to the pressure plate 330, so that the battery to be tested 50 is evenly pressed.
  • the four hinge devices 340 are divided into two groups, each group comprising two coaxially disposed hinge devices 340, the set of hinge devices 340 between the groups being disposed on different axes.
  • the coaxial arrangement means that the rotation axes of the two hinge devices 340 are the same.
  • the four hinge devices 340 share two handles 3470, and each handle 3470 is simultaneously fixedly coupled to the first hinge arms 3420 of the two coaxially disposed hinge devices 340 for simultaneously rotating the two hinge devices 340.
  • the handle 3470 includes a connecting beam 3472 and a control handle 3474.
  • the two ends of the connecting beam 3472 are fixedly connected to the first hinge arm 3420 of a hinge device 340 respectively.
  • the control handle 3474 and the connecting beam 3472 The middle of the fixed connection.
  • the lever 3474 can be integrally formed with the connecting beam 3472, and the connecting beam 3472 can be fixedly connected to the first hinge arm 3420 by bolts.
  • the two handles 3474 can be simultaneously operated by the two hands of the person, so that the two connecting beams 3472 are simultaneously rotated, thereby simultaneously rotating the four hinge devices 340, so that the pressure plate 330 is symmetrically away from or close to the Base plate 310.
  • Each battery test unit 30 further includes two battery clips 400.
  • the two battery clips 400 are spaced apart from the same side of the bottom plate 310. After the battery to be tested 50 is placed on the bottom plate 310, the positive and negative ears of the battery to be tested 50 can be respectively clamped by the two battery clips 400.
  • the two battery clips 400 can be respectively disposed in the two pairs of double L-shaped chutes 230 corresponding to the battery testing unit 30 and can slide in the two pairs of double L-shaped chutes 230, so as to be compatible with different sizes. Battery 50 is tested for performance testing.
  • Each battery test unit 30 further includes two temperature measurement sensors 500.
  • the two temperature measuring sensors 500 are in contact with the two battery clips 400, respectively. When the two battery clips 400 are clamped to the positive and negative ear of the battery 50 to be tested, the two temperature sensors 500 can be respectively in contact with the positive and negative ear of the battery 50 to be tested, so that the battery to be tested can be used.
  • the temperature of 50 is monitored in real time. When the battery is in operation, the temperature at the ear is the highest, so directly measuring the temperature of the tab can measure the highest temperature of the battery 50 to be tested, thereby providing more favorable protection for the battery 50 to be tested.
  • Each battery test unit further includes an indicator light 600.
  • the indicator light 600 is electrically coupled to the controller 20.
  • the controller 20 detects an abnormal fluctuation of the voltage of the battery to be tested 50, the controller 20 issues an instruction to cause the indicator light 600 to illuminate or flash to remind the user to perform the inspection.
  • the setting position of the indicator light is not limited.
  • the indicator light 600 is disposed on the support plate 200. Specifically, the indicator light 600 is disposed on a side of the support plate 200 and is located between two pairs of double L-shaped chutes 230 corresponding to each battery test unit.
  • the lithium ion battery When the lithium ion battery is subjected to a charge and discharge performance test before leaving the factory, the lithium ion battery may be placed between the bottom plate of the pressurizing device and the pressure plate while the pressurizing device is in an open state, and then the The pressing device is locked, the lithium ion battery is compacted, and then the positive and negative ear of the lithium ion battery are clamped by two battery clips disposed on one side of the bottom plate, and the two temperature measuring sensors are They are respectively in contact with the positive and negative electrodes of the lithium ion battery to be tested.
  • the controller can detect the instantaneous fluctuation of the voltage, and can monitor the abnormal fluctuation of the voltage; the pressing device can pressurize the battery unit, and can effectively solve the battery formation (first charging)
  • the problem of internal bubble accumulation during the process can prevent the expansion and deformation of the battery cell during the formation process, and can improve the inherent quality and appearance of the battery cell;
  • the temperature sensor can monitor the temperature change of the battery in real time. When the temperature of the battery to be tested is too high, the power can be cut off quickly to protect the battery.
  • the pressing device of the invention is designed by the principle of mechanical dead point, and can be quickly clamped and quickly opened. It is easy to use and adjust, and the action is quick and reliable, which is beneficial to the operator to operate, reduce the auxiliary time, and accelerate the battery formation.
  • the process of pressurizing and clamping the battery in the process improves the production efficiency; the pressing device has a simple structure and is suitable for mass production and manufacturing.

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Abstract

一种电池测试平台（1），包括电池架（10）、控制器（20）以及电池测试单元（30），所述控制器（20）及所述电池测试单元（30）设置在所述电池架（10）上，所述电池测试单元（30）包括一加压装置（300），该加压装置（300）为利用机械死点原理而设计的一种可快速夹持、快速打开的机构，可在电池测试过程中对待测电池进行加压，能有效解决电池单体化成即首次充电过程中内部气泡积聚的问题，能防止电池单体在化成过程中出现膨胀、变形情况，可提高电池单体的内在品质和外观形状。

Description

电池测试平台 技术领域
本发明涉及一种电池测试平台，尤其涉及一种可在电池测试过程中对电池施加压力的电池测试平台。
背景技术
目前锂离子电池在出厂之前均要进行充放电性能测试，主要有两个目的：（1）将性能一致的锂离子电池筛选出来。如果锂离子电池的一致性差，则会使串并联后的锂离子电池组的性能不稳定，循环寿命短；（2）对锂离子电池进行化成。所谓化成是指锂离子电池首次充电的过程。
在锂离子电池化成的过程中，电池内部存在少量的气泡，如果不加以处理，这些气泡会一直存在于电池内，长时间使用后，电池内有气泡的部分会不断扩大，致使极板分离范围增加，电池容量下降，当电池发生过充或者过放后，电池内胀气现象会进一步加重，严重影响电池的循环寿命和放电性能，并可能导致漏液致使电池报废。在电池化成过程中对电池施加一定的压力可将电池内部的气泡排出。然而虽然目前用于锂离子电池的测试平台很多，但都不能对锂离子电池在测试过程中对电池施加压力并对其进行充放电性能测试。
发明内容
有鉴于此，确有必要提供一种可对待测电池施加压力的电池测试平台。
一种电池测试平台，包括电池架、控制器以及电池测试单元，所述控制器及所述电池测试单元设置在所述电池架上，所述电池测试单元包括一加压装置；
所述加压装置包括底板、固定框架、压板及铰链装置，该底板设置在所述电池架上，该固定框架固定在该底板上，该压板通过该铰链装置与该固定框架连接，该铰链装置使该压板与该底板间隔设置，该压板与该底板之间具有一容置空间用于容纳电池单体；
该铰链装置包括铰链座、第一铰链臂、第二铰链臂、第一销轴、第二销轴、第三销轴及摇杆，所述铰链座与所述固定框架连接，所述第一铰链臂通过所述第一销轴与所述铰链座铰接，所述第二铰链臂通过所述第二销轴与所述第一铰链臂铰接，所述第二铰链臂通过所述第三销轴与所述压板铰接，所述手柄与所述第一铰链臂固定连接，该手柄用于带动所述第一铰链臂进行转动，从而使所述第一铰链臂带动所述第二铰链臂进行转动，进而带动所述压板靠近或远离所述底板；
该铰链装置具有一死点位置，该死点位置是所述第一铰链臂和所述第二铰链臂转动到使所述第一销轴、所述第二销轴及所述第三销轴处于同一直线时的位置，当所述第一铰链臂和所述第二铰链臂在所述手柄的带动下到达所述死点位置时，放置在所述压板与所述底板之间的所述电池单体被压紧。
本发明提供的锂离子电池测试平台，在电池测试过程中，可对电池单体进行加压，能有效解决电池单体化成（首次充电）过程中内部气泡积聚的问题，能防止电池单体在化成过程中出现膨胀、变形情况，可提高电池单体的内在品质和外观形状；该加压装置利用机械死点原理而设计的一种可快速夹持、快速打开的结构，便于使用和调节，动作迅速可靠，有利于操作人员进行操作，减少辅助用时，加快电池化成工艺中对电池进行加压夹紧上架的作业进程，提高了生产效率；该加压装置的结构简单，适合于大批量加工制造。
 附图说明
图1为本发明实施例锂离子电池测试平台的主视图。
图2为本发明实施例锂离子电池测试平台的侧视图。
图3为本发明实施例锂离子电池测试平台的俯视图。
图4a、4b和4c分别为本发明实施例锂离子电池测试平台的电池架框架的主视图、侧视图和俯视图。
图5为本发明实施例锂离子电池测试平台的电池架隔板的俯视图。
图6a、6b和6c分别为本发明实施例锂离子电池测试平台的设置有电池测试单元的电池架隔板的主视图、侧视图和俯视图。
图7为本发明实施例锂离子电池测试平台的加压装置的立体图。
图8为本发明实施例锂离子电池测试平台的加压装置的俯视图。
图9为图8中IX-IX截面的加压装置锁定状态的主视图。
图10为图8中IX-IX截面的加压装置打开状态的主视图。
图11为图8中XI-XI截面的加压装置锁定状态的侧视图。
主要元件符号说明
锂离子电池测试平台 1
电池架 10
电池架框架 100
矩形基座 110
第一底框C型材 111
第二底框C型材 112
第三底框C型材 113
架体 120
倒U型组件 121
倒U型C型材 1211
侧竖盖板 1212
顶C型材 122
支撑板 200
支撑板框体 210
第一支撑板框C型材 211
第二支撑板C型材 212
第三支撑板C型材 213
刚性板 220
双L型滑槽 230
控制器 20
电池测试单元 30
加压装置 300
底板 310
固定框架 320
支撑体 3210
固定架 3220
第一通孔 3222
第二通孔 3224
压板 330
凹槽 3320
铰链装置 340
铰链座 3410
第一连接段 3412
第二连接段 3414
第三连接段 3418
第一铰链臂 3420
第二铰链臂 3430
第一销轴 3440
第二销轴 3450
第三销轴 3460
手柄 3470
连接梁 3472
控制柄 3474
螺栓 3480
垫片 3490
弹性元件 360
限位挡板 370
角铁 380
电池夹 400
测温传感器 500
指示灯 600
待测电池 50
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
以下将结合附图详细说明本发明实施例提供的电池测试平台。
请参阅图1至图3，本发明实施例采用的锂离子电池测试平台1包括电池架10、控制器20以及电池测试单元30。所述控制器20及所述电池测试单元30设置在所述电池架10上。所述控制器20为一电压控制器，用于对待测电池50充放电的电压波动进行实时监控。
【电池架】
所述电池架10的结构不限，只要能起到支撑所述控制器20以及所述电池测试单元30的作用即可。
请一并参阅图1至图4，在本发明实施例中，所述电池架10包括电池架框架100及支撑板200。所述电池架框架100包括一矩形基座110和一固定于该矩形基座110上的架体120。
所述矩形基座110包括两个第一底框C型材111、两个第二底框C型材112以及两个第三底框C型材113。该两个第一底框C型材111和两个第二底框C型材112形成一第一矩形框，且该第三底框C型材113与该两个第一底框C型材111平行间隔固定于该第一矩形框内。本发明所述C型材是指截面为凹槽形的长条形钢材。
所述架体120包括两个倒U型组件121和一长条形顶C型材122。该两个倒U型组件121平行间隔设置。每个倒U型组件121包括两个尺寸不同的倒U型C型材1211和一侧竖盖板1212。该两个尺寸不同的倒U型C型材1211嵌套在一起且平行间隔设置形成一个倒U型框体。所述侧竖盖板1212固定在该两个尺寸不同的倒U型C型材1211之间。该倒U型组件121固定在所述第一底框C型材111上。该长条形顶C型材122固定在该两对倒U型组件121的顶部之间。
可以理解，所述电池架框架100的具体形状和尺寸不限于上述结构，可以根据实际需要选择。
请一并参阅图5~6，该支撑板200用于支撑所述电池测试单元30。该支撑板200固定在所述电池架框架100上，具体地，该支撑板200固定在所述架体120上并且与所述矩形基座110平行设置。该支撑板200的数量可为多个。该多个支撑板200平行间隔固定于该架体120上。每个支撑板200上设置有至少一电池测试单元30。在一实施例中，每个支撑板200上设置有两排间隔设置的电池测试单元30，且每排包括多个电池测试单元30。
每一支撑板200包括一支撑板框体210和两个刚性板220。该支撑板框体210包括两个第一支撑板框C型材211、两个第二支撑板框C型材212及一个第三支撑板框C型材213。所述两个第一支撑板框C型材211及两个第二支撑板框C型材212形成一个第二矩形框。该第三支撑板框C型材213与该两个第一支撑板框C型材211平行间隔固定于该第二矩形框内，并把该第二矩形框分隔为两个第三矩形框。该两个刚性板220分别固定于该两个第三矩形框内。所述刚性板220用于支撑所述电池测试单元30。可以理解，所述支撑板200的具体形状和尺寸不限于上述结构，可以根据实际需要选择。
进一步地，该支撑板200的一侧边定义至少两个双L型滑槽230。每两个双L型滑槽230与一个所述电池测试单元30相对应。每个双L型滑槽230中的两个L型滑槽平行间隔且向背设置，从而形成一T型结构。所述至少两个双L型滑槽230可定义在所述第二支撑板框C型材212上。
【电池测试单元】
所述电池测试单元30的数量可为多个。每个电池测试单元30包括设置在所述支撑板200上的一加压装置300。
请一并参阅图7~11，该加压装置300包括底板310、固定框架320、压板330及铰链装置340。该底板310设置在所述支撑板200上，该固定框架320固定在该底板310上。该压板330通过该铰链装置340与该固定框架320连接，该铰链装置340使该压板330与该底板310间隔设置，该压板330与该底板310之间具有一容置空间用于所述待测电池50。
该铰链装置340包括铰链座3410、第一铰链臂3420、第二铰链臂3430、第一销轴3440、第二销轴3450、第三销轴3460及手柄3470。所述铰链座3410与所述固定框架320连接，所述第一铰链臂3420通过所述第一销轴3440与所述铰链座3410铰接，所述第二铰链臂3430通过所述第二销轴3450与所述第一铰链臂3420铰接，所述第二铰链臂3430通过所述第三销轴3460与所述压板330铰接。所述手柄3470与所述第一铰链臂3420固定连接，该手柄3470用于带动所述第一铰链臂3420进行转动，从而使所述第一铰链臂3420带动所述第二铰链臂3430进行转动，进而带动所述压板330靠近或远离所述底板310。该铰链装置340具有一死点位置，该死点位置是所述第一铰链臂3420和所述第二铰链臂3430转动到使所述第一销轴3440、所述第二销轴3450及所述第三销轴3460处于同一直线时的位置。当所述第一铰链臂3420和所述第二铰链臂3430在所述手柄3470的带动下到达所述死点位置时，放置在所述压板330与所述底板310之间的所述待测电池50被压紧。当该第一铰链臂3420和该第二铰链臂3430到达所述死点位置时，该加压装置300处于锁定状态，当该第一铰链臂3420和该第二铰链臂3430未到达所述死点位置时，该加压装置300处于打开状态。
所述底板310和所述压板330为刚性的板状结构。当该加压装置300处于锁定状态时，所述底板310和所述压板330平行间隔设置，所述压板330沿其厚度方向且面向所述底板310的方向X对该待测电池50施加压力，从而使该待测电池50被压紧。所述压板330上可进一步设置有凹槽3320，所述压板330可通过该凹槽3320卡在所述固定框架320上，使该压板330只能沿所述方向X移动，不能在其他方向上移动。优选地，所述底板310和所述压板330的电阻等于高于500MΩ，以防止漏电、短路等事件发生。优选地，所述底板310和所述压板330均经过阳极氧化绝缘处理，通过该处理不仅能使所述底板310和所述压板330绝缘，还可使所述底板310和所述压板330具有良好的传热性能和抗腐蚀性能。优选地，所述底板310和所述压板330在所述待测电池50放入与取出的一侧的棱边具有倒角，可防止所述待测电池50在放入与取出时被刮伤。所述待测电池50为方形或片状的软包装电池。
所述固定框架320用于使该铰链装置340及该压板330与该底板310沿所述方向X间隔设置。该固定框架320可包括固定架3220及多个支撑体3210。该多个支撑体3210用于支撑、固定并间隔所述固定架3220与所述底板310。该支撑体3210的两端分别与所述底板310与所述固定架3220固定连接。该多个支撑体3210可设置在所述底板310的边缘处。该支撑体3210可通过螺栓与所述底板310固定连接。所述压板330可通过所述凹槽3320卡在该多个支撑体3210上，以使该压板330只能沿该支撑体在所述方向X上移动，而不能在其他方向上移动，保证该压板330平衡地靠近或远离所述底板310。所述铰链装置340与该固定架3220连接。该固定架3220可为一固定板，也可为多个固定边框。该固定架3220在所述方向X上具有第一通孔3222，用于使该固定架3220与所述铰链装置340连接。进一步地，该支撑体3210与该固定架3220为中空结构，以使该固定框架320具有更轻的质量，从而减轻了整个加压装置300的重量，使该加压装置300的使用更方便。
在本发明实施例中，所述支撑体3210为立柱，所述立柱的数量为4个，所述固定架3220为所述固定边框，所述固定边框的数量为2个，每个所述固定边框分别与两个所述立柱形成一U形框架，所述立柱在所述底板310的边缘处通过螺栓固定于所述底板310上，该两个U形框架平行间隔设置。优选地，所述U形框架一体成型。
所述铰链装置340通过所述铰链座3410与所述固定架3220连接。具体地，所述铰链座3410的一端与所述固定架3220连接，另一端与所述第一铰链臂3420铰接。所述铰链座3410可与所述固定架3220固定连接，也可与所述固定架3220可活动地连接。
在一实施例中，该铰链座3410与该固定架3220固定连接。具体地，所述铰链座3410位于所述固定架3220面向所述压板330的一侧，且该铰链座3410面向所述固定架3220的一侧设置有螺孔，一螺栓穿过所述第一通孔3222并螺接在所述铰链座3410的螺孔上，从而使该铰链座3410与该固定架3220固定连接。
在另一实施例中，该铰链座3410与该固定架3220可活动地连接。具体地，所述铰链座3410包括沿所述方向X同轴设置且依次连接的第一连接段3412及第二连接段3414。所述第一连接段3412贯穿所述第一通孔3222并可在所述第一通孔3222中沿所述方向X滑动，所述第一连接段3412在所述第一通孔3222远离所述压板330的一侧与一垫片3490固定连接，当该加压装置300处于打开状态时，该铰链座3410在该第一通孔3222远离该压板330的一侧通过该垫片3490卡在该固定架3220上，从而使该铰链座3410不会脱离该固定架3220。所述第二连接段3414位于所述第一通孔3222靠近所述压板330的一侧，当该加压装置300处于锁定状态时，该铰链座3410在该第一通孔3222面向该压板330的一侧通过该第二连接段3414卡在该固定架3220上，使该铰链装置340固定，并使该固定架3220通过该第二连接段3414对该铰链装置340及该压板330施加一沿所述方向X的压力，从而使该待测电池50压紧。该第二连接段3414在与所述第一连接段3412连接的地方形成一背向所述压板330的台阶面3416，当该加压装置300处于锁定状态时，该台阶面3416与所述固定架3220接触，从而使该铰链座3410卡在该固定架3220上。
所述第一连接段3412可通过螺栓3480与所述垫片3490固定连接。具体地，所述垫片3490上具有孔洞，所述第一连接段3412背向所述压板330的一侧设置有螺孔，所述螺栓3480穿过该垫片3490的孔洞与该第一连接段3412的螺孔螺接，从而使该第一连接段3412与该垫片3490固定连接。
所述固定架3220在所述方向X上还可具有与所述第一通孔3222同轴设置的第二通孔3224，该第二通孔3224位于该第一通孔3222面向所述压板330的一侧，该第二连接段3414可穿入该第二通孔3224并在该第二通孔3224中沿所述方向X滑动。该第二通孔3224可进一步限制该第二连接段3414在所述方向X以外的方向上运动，从而防止所述第一铰链臂3420和所述第二铰链臂3430越过死点位置而产生失稳的情况。该第二通孔3224的半径大于所述第一通孔3222的半径。当该固定架3220为实心结构时，该第一通孔3222与该第二通孔3224共同形成一阶梯孔。当该固定架3220为空心结构时，该第一通孔3222与该第二通孔3224分别位于该空心的固定架3220背离所述压板330的一侧和面向所述压板330的一侧。
所述铰链座3410可通过该第二连接段3414与所述第一铰链臂3420铰接。进一步地，所述铰链座3410还可包括第三连接段3418，该第三连接段3418位于所述第二连接段3414远离所述第一连接段3412的一侧并与所述第二连接段3414同轴设置，该铰链座3410可通过该第三连接段3418与所述第一铰链臂3420铰接。优选地，所述第一连接段3412、所述第二连接段3414及所述第三连接段3418一体成型，从而使该铰链装置340与该固定框架320的连接更牢固。优选地，该第一连接段3412与该第一通孔3222、该第二连接段3414与该第二通孔3224均采用小间隙孔轴的方式进行配合，以使该第一连接段3412与该第二连接段3414能分别在该第一通孔3222和第二通孔3224中延所述方向X自由滑动，而又不会使该铰链座3410产生太大的径向晃动而使所述第一铰链臂3420和所述第二铰链臂3430越过死点位置而产生失稳。
所述铰链座3410还可进一步包括弹性元件360，该弹性元件360沿所述方向X设置于所述第二连接段3414与所述固定架3220之间。在所述加压装置300处于锁定状态时，该弹性元件360处于压缩状态，并向所述铰链座3410提供一压向所述压板330的压力，保证所述压板330对待测电池50的有效压紧；然而，该弹性元件360并非处于弹性压缩极限，即还可进一步弹性压缩，从而使所述压板330与所述底板310之间的距离可调节，来适应不同待测电池50因制造误差而产生的厚度变化及同一待测电池50在化成时极板膨胀引起的厚度变化，同时保证该压板330对待测电池50的有效压紧。该弹性元件360可设置于所述台阶面3416与所述固定架3220之间。该弹性元件可为弹簧、弹性柱或弹片。优选地，该弹性元件为蝶形弹簧，该蝶形弹簧可套在所述第一连接段3412上，该蝶形弹簧在其形变方向上具有相对的第一端和第二端，该蝶形弹簧的第一端与所述台阶面3416接触，该蝶形弹簧的第二端与所述固定架3220接触。
所述第一铰链臂3420、所述第二铰链臂3430、所述第一销轴3440、所述第二销轴3450、所述第三销轴3460及所述手柄3470组成一死点机构，其中该第一铰链臂3420通过所述铰链座3410与所述固定框架320连接，该第二铰链臂3430与所述压板330连接，当该第一铰链臂3420和第二铰链臂3430在该手柄3470的带动下达到所述死点位置时，放置在该压板330及该底板310之间的待测电池50被压紧。所述第一铰链臂3420和所述第二铰链臂3430在其长度方向上分别具有相对的第一端和第二端，所述第一铰链臂3420的第一端通过所述第一销轴3440与所述铰链座3410铰接，所述第一铰链臂3420的第二端通过所述第二销轴3450与所述第二铰链臂3430的第一端铰接，所述第二铰链臂3430的第二端通过所述第三销轴3460与所述压板330铰接。所述第一销轴3440、所述第二销轴3450及所述第三销轴3460互相平行间隔设置，以保证所述第一铰链臂3420和所述第二铰链臂3430的转动轴向平行。
所述加压装置300可进一步包括限位挡板370。该限位挡板370设置于所述第二铰链臂3430的转动轨迹上，当所述第二铰链臂3430到达所述死点位置时，该限位挡板370用于阻止所述第二铰链臂3430继续转动，从而可防止所述第一铰链臂3420和所述第二铰链臂3430越过所述死点位置而产生失稳的情况，保证所述锂离子电池加压装置300的可靠性。
所述加压装置300还可进一步包括角铁380。所述压板330可以通过该角铁380与所述第二铰链臂3430铰接。所述角铁380包括两个一体成型且相互垂直的侧板，其中一个侧板与所述压板330叠加设置且与所述压板330固定连接，另一个侧板垂直于所述压板330设置且通过所述第三销轴3460与所述第二铰链臂3430铰接。与所述压板330叠加设置的侧板可与所述压板330通过所述螺栓3480固定连接。所述限位挡板370可设置在该角铁380与所述压板330垂直设置的侧板上。优选地，所述限位挡板370可焊接在所述角铁380与所述压板330垂直设置的侧板上。
该铰链装置340的数量和设置位置不限，只要能使该压板330与该底板310间隔设置，并能带动该压板330靠近或远离该底板310即可。当该铰链装置340的数量为1个时，该铰链装置340可设置在所述压板330的重心位置。当该铰链装置340的数量为多个时，该多个铰链装置340可形成一个对称结构，以带动所述压板330对称地靠近或远离所述底板310。在本实施例中，该铰链装置340的数量为四个，该四个铰链装置340与该压板330进行铰接的四个铰接点形成一个平行四边形，该四个铰链装置可带动该压板330对称地靠近或远离所述底板310，并且该四个铰链装置可均匀地对所述压板330施力，从而对该待测电池50均匀地受力压紧。该四个铰链装置340分为两组，每组包括两个同轴设置的铰链装置340，组与组之间的铰链装置340不同轴设置。所述同轴设置是指两个所述铰链装置340的转动轴相同。该四个铰链装置340共用两个手柄3470，每一手柄3470同时与两个同轴设置的铰链装置340的第一铰链臂3420固定连接，用于同时带动该两个铰链装置340进行转动。具体地，该手柄3470包括一连接梁3472和一控制柄3474，该连接梁3472长度方向的两端分别与一个铰链装置340的第一铰链臂3420固定连接，该控制柄3474与该连接梁3472的中部固定连接。该控制柄3474可与该连接梁3472一体成型，该连接梁3472可通过螺栓与第一铰链臂3420固定连接。在实际应用时，人的两手可同时操作该两个控制柄3474，使该两个连接梁3472同时转动，从而同时带动该四个铰链装置340转动，使该压板330对称地远离或靠近所述底板310。
每个电池测试单元30进一步包括两个电池夹400。所述两个电池夹400间隔设置于该底板310的同一侧边。当所述待测电池50放置在所述底板310上后，该待测电池50的正、负极耳可以由该两个电池夹400分别夹住。该两个电池夹400可分别设置在与该电池测试单元30对应的两对双L型滑槽230内且可以在该两对双L型滑槽230内滑动，从而可对应不同尺寸大小的待测电池50以便进行性能测试。
每个电池测试单元30进一步包括两个测温传感器500。该两个测温传感器500分别与两个电池夹400接触。当两个电池夹400夹住该待测电池50的正、负极耳后，可使该两个测温传感器500分别与该待测电池50的正、负极耳接触，从而可对该待测电池50的温度进行实时监控。在电池进行工作时，极耳处的温度最高，因此直接测量极耳的温度能够测出所述待测电池50的最高温度，从而对所述待测电池50进行更有利的保护。
每个电池测试单元还进一步包括一指示灯600。该指示灯600与所述控制器20电连接。当所述控制器20监测到所述待测电池50的电压的瞬间波动异常时，所述控制器20发出指令，使该指示灯600发光或闪烁，以提醒用户进行检查。所述指示灯的设置位置不限。在本发明实施例中，所述指示灯600设置在所述支撑板200上。具体地，所述指示灯600设置于该支撑板200的侧面，且位于与每个电池测试单元对应的两对双L型滑槽230之间。
当锂离子电池在出厂之前要进行充放电性能测试时，可在所述加压装置处于打开状态的情况下将该锂离子电池放置在所述加压装置的底板与压板之间，然后将该加压装置锁定，使所述锂离子电池被压紧，然后用设置在所述底板一侧的两个电池夹将该锂离子电池的正、负极耳夹住，并使该两个测温传感器分别与该待测锂离子电池的正、负极耳接触。
在电池测试过程中，所述控制器可检测电压的瞬间波动，对于电压的异常波动可进行监控；所述加压装置可对电池单体进行加压，能有效解决电池单体化成（首次充电）过程中内部气泡积聚的问题，能防止电池单体在化成过程中出现膨胀、变形情况，可提高电池单体的内在品质和外观形状；所述测温传感器可对电池的温度变化进行实时监控，当待测电池温度过高时，可以快速切断电源，达到保护电池的作用。
本发明的加压装置是利用机械死点原理而设计的一种可快速夹持、快速打开的结构，便于使用和调节，动作迅速可靠，有利于操作人员进行操作，减少辅助用时，加快电池化成工艺中对电池进行加压夹紧上架的作业进程，提高了生产效率；该加压装置的结构简单，适合于大批量加工制造。
另外，本领域技术人员还可以在本发明精神内做其它变化，当然，这些依据本发明精神所做的变化，都应包含在本发明所要求保护的范围之内。

Claims (12)

  1. 一种电池测试平台，其特征在于，包括电池架、控制器以及电池测试单元，所述控制器及所述电池测试单元设置在所述电池架上，所述电池测试单元包括一加压装置；
    所述加压装置包括底板、固定框架、压板及铰链装置，该底板设置在所述电池架上，该固定框架固定在该底板上，该压板通过该铰链装置与该固定框架连接，该铰链装置使该压板与该底板间隔设置，该压板与该底板之间具有一容置空间用于容纳电池单体；
    该铰链装置包括铰链座、第一铰链臂、第二铰链臂、第一销轴、第二销轴、第三销轴及摇杆，所述铰链座与所述固定框架连接，所述第一铰链臂通过所述第一销轴与所述铰链座铰接，所述第二铰链臂通过所述第二销轴与所述第一铰链臂铰接，所述第二铰链臂通过所述第三销轴与所述压板铰接，所述手柄与所述第一铰链臂固定连接，该手柄用于带动所述第一铰链臂进行转动，从而使所述第一铰链臂带动所述第二铰链臂进行转动，进而带动所述压板靠近或远离所述底板；
    该铰链装置具有一死点位置，该死点位置是所述第一铰链臂和所述第二铰链臂转动到使所述第一销轴、所述第二销轴及所述第三销轴处于同一直线时的位置，当所述第一铰链臂和所述第二铰链臂在所述手柄的带动下到达所述死点位置时，放置在所述压板与所述底板之间的所述电池单体被压紧。
  2. 如权利要求1所述的电池测试平台，其特征在于，所述固定框架在一方向X上具有第一通孔，所述方向X为沿所述压板厚度面向所述底板的方向，所述铰链座包括沿所述方向X同轴设置且依次连接的第一连接段及第二连接段，所述第一连接段贯穿所述第一通孔且可在所述第一通孔中沿所述方向X滑动，所述第一连接段在所述第一通孔远离所述压板的一侧与一垫片固定连接，该铰链座在该第一通孔远离该压板的一侧通过该垫片卡在该固定框架上；所述第二连接段位于所述第一通孔面向所述压板的一侧，该铰链座在该第一通孔面向该压板的一侧通过该第二连接段卡在该固定框架上，并使该固定框架通过该第二连接段对该铰链装置及该压板施加一沿所述方向X的压力，从而使该电池单体压紧。
  3. 如权利要求2所述的电池测试平台，其特征在于，所述铰链座进一步包括弹性元件，该弹性元件沿所述方向X设置于所述第二连接段与所述固定框架之间，当所述第一铰链臂和所述第二铰链臂处于死点位置时，该弹性元件处于压缩状态，并向所述铰链座提供一压向所述压板的压力，以保证所述压板对所述电池单体的有效压紧。
  4. 如权利要求3所述的电池测试平台，其特征在于，当所述第一铰链臂和所述第二铰链臂处于死点位置时，所述弹性元件并非处于弹性压缩极限，还可进一步弹性压缩。
  5. 如权利要求3所述的电池测试平台，其特征在于，述弹性元件为蝶形弹簧，该蝶形弹簧套在所述第一连接段上，该蝶形弹簧沿其形变方向具有相对的第一端和第二端，所述第二连接段在与所述第一连接段连接的地方形成一背向所述压板的台阶面，所该蝶形弹簧的第一端与所述台阶面接触，该蝶形弹簧的第二端与所述固定框架接触。
  6. 如权利要求3所述的电池测试平台，其特征在于，所述固定框架在所述方向X上具有与所述第一通孔同轴设置的第二通孔，该第二通孔位于该第一通孔面向所述压板的一侧，该第二连接段穿入该第二通孔并可在该第二通孔中沿所述方向X滑动。
  7. 如权利要求1所述的电池测试平台，其特征在于，所述加压装置进一步包括一限位挡板，该限位挡板位于所述第二铰链臂的转动轨迹上，当所述第二铰链臂到达所述死点位置时，该限位挡板能阻止所述第二铰链臂继续转动。
  8. 如权利要求1所述的电池测试平台，其特征在于，所述加压装置进一步包括一角铁，所述压板通过该角铁与所述第二铰链臂铰接，所述角铁包括两个一体成型且相互垂直的侧板，其中一个侧板与所述压板叠加设置并固定连接，另一个侧板垂直于所述压板设置且通过所述第三销轴与所述第二铰链臂铰接。
  9. 如权利要求1所述的电池测试平台，其特征在于，该铰链装置的数量为四个，该四个铰链装置与该压板进行铰接的四个铰接点形成一个平行四边形，该四个铰链装置分为两组，每组包括两个同轴设置的铰链装置，组与组之间的铰链装置不同轴设置。
  10. 如权利要求9所述的电池测试平台，其特征在于，该四个铰链装置共用两个手柄，每一手柄同时与两个同轴设置的铰链装置的第一铰链臂固定连接，用于同时带动该两个铰链装置进行转动。
  11. 如权利要求1所述的电池测试平台，其特征在于，所述电池架包括一电池架架体以及多个支撑板，所述多个支撑板平行间隔固定在该电池架架体上，每个所述支撑板上设置有多个电池测试单元。
  12. 如权利要求11所述的电池测试平台，其特征在于，该支撑板的同一侧边定义至少两个双L型滑槽，每两个双L型滑槽与一个所述电池测试单元相对应，每个电池测试单元进一步包括两个电池夹，该两个电池夹分别设置于该两对双L型滑槽内且可以在该两对双L型滑槽内滑动。
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CN113759261A (zh) * 2021-08-09 2021-12-07 超威电源集团有限公司 一种铅酸蓄电池极板间距对电池性能影响的测试方法
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