Sodium-ion battery hard carbon negative electrode material electrical property test equipment

Abstract

The invention discloses electrical property testing equipment for a sodium-ion battery hard carbon negative electrode material, and relates to the technical field of electrical property testing equipment. The equipment comprises a bottom plate, one end of the bottom plate is fixedly connected with an L-shaped supporting rod, the horizontal section of the L-shaped supporting rod is fixedly connected with a first air cylinder push rod, the output end of the first air cylinder push rod is fixedly connected with a mounting frame, and the mounting frame is connected with a plurality of lifting connectors; the bottom power connection part comprises a protection frame installed on the bottom plate, openings are formed in one side and the top of the protection frame, a telescopic connector is installed at the bottom in the protection frame, and a bearing frame inserted into the protection frame in an overturning mode is hinged to the bottom of the opening side of the protection frame. According to the equipment, a buckling structure of the protection frame and the bearing frame is adopted to clamp the battery, the battery is wrapped during testing, and when the battery leaks liquid and burns, the smoke alarm can timely trigger the sealing element to perform sealing power-off operation on the battery, so that the testing equipment is prevented from being damaged, and the safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical property testing equipment, and in particular to an electrical property testing equipment for a hard carbon negative electrode material of a sodium ion battery. Background Art

[0002] Sodium-ion batteries are secondary batteries (rechargeable batteries) that rely mainly on the movement of sodium ions between the positive and negative electrodes. Similar to the working principle of lithium-ion batteries, sodium-ion batteries usually use a multi-layer sheet structure to increase the energy storage density of the battery by stacking layers. At the same time, the battery packaging structure needs to have good isolation performance to ensure that the battery will not be affected by the external environment during operation.

[0003] There are many options for negative electrode materials for sodium-ion batteries, among which hard carbon materials have the characteristics of diverse structures, low prices, good conductivity, and high sodium storage capacity. After the sodium-ion battery is processed, it is necessary to conduct charge and discharge tests on batteries with different hard carbon negative electrode structures to determine the stability of batteries with different hard carbon negative electrode structures.

[0004] Existing charge and discharge tests mostly use exposed clamped batteries for testing, which poses the following risks during testing: Since the charge and discharge test is a continuous test, the battery is in a state of charge and discharge for a long time, and it is easy to produce corrosion inside, which will lead to leakage and combustion. The exposed clamping battery is not safe. Personnel need to continuously observe the battery testing process so that they can shut down the equipment in time when an accident occurs to avoid equipment damage, which is labor-intensive and inconvenient; It is impossible to control the external ambient temperature during testing, and the temperature difference will affect the accuracy of the battery test data.

[0005] Therefore, the present invention proposes an electrical performance testing device for a sodium ion battery hard carbon negative electrode material. Summary of the invention

[0006] The purpose of this application is to solve the problems in the above-mentioned background technology, and to provide an electrical performance testing device for hard carbon negative electrode materials of sodium ion batteries.

[0007] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A sodium ion battery hard carbon negative electrode material electrical performance testing device, comprising: A bottom plate, one end of the bottom plate is fixedly connected to an L-shaped support rod, a cylinder push rod 1 is fixedly connected to the horizontal section of the L-shaped support rod, an output end of the cylinder push rod 1 is fixedly connected to a mounting frame, and a plurality of lifting joints are connected to the mounting frame; The bottom power connection part comprises a protection frame installed on the bottom plate, one side of the protection frame and the top of the protection frame are both configured as openings, a telescopic joint is installed at the bottom of the protection frame, a bearing frame flipped and plugged into the inside of the protection frame is hinged at the bottom of the opening side of the protection frame, two mounting grooves for clamping the battery are configured in the bearing frame, and the telescopic joint passes through the bottom of the mounting groove and contacts the negative electrode of the battery; A temperature regulating member, disposed on the carrying frame and used to regulate the temperature of the carrying frame; The sealing member comprises a movable plate mounted on a bottom plate and a smoke alarm mounted on a mounting frame, wherein a plug plate is mounted on the movable plate for horizontal sliding, and transverse grooves arranged opposite to the plug plate and located at the upper and lower ends of the mounting groove are constructed on the protective frame and the bearing frame, and a driving member for pushing the plug plate to move is mounted on the movable plate.

[0008] Furthermore, four strip grooves are constructed on the base plate along its length direction, and the protective frames are slidably installed in the strip grooves in groups of two. A positioning piece is connected between the protective frame and the base plate. Four cylinder push rods 2 are fixedly connected to the mounting frame, and test connectors are connected to the output ends of the cylinder push rods 2.

[0009] Furthermore, the bottom of the protective frame is constructed with two guide blocks slidably installed in the strip grooves, the positioning member includes a plurality of positioning round blocks arrayed on the bottom plate and located on the sides of the strip grooves, the positioning round blocks are constructed with grooves, and both sides of the bottom of the protective frame are constructed with convex plates, and the convex plates are movably penetrated with positioning pins that are inserted into the grooves.

[0010] Furthermore, a fan-shaped block is constructed in the groove, one end of the fan-shaped block is constructed with an arc groove, a support spring sleeved on the locating pin is connected between the top of the locating pin and the convex plate, a semicircular block is constructed at the bottom of the locating pin, and an arc block for rotating and plugging into the arc groove is constructed on the semicircular block.

[0011] Furthermore, the supporting frame includes a rectangular frame hinged at the bottom of the protective frame, the mounting groove is constructed on the side of the rectangular frame facing the protective frame, the upper and lower ends of the mounting groove are constructed with through openings, both sides of the opening of the mounting groove are constructed with elastic protrusions for clamping the battery, spring insertion rods are installed on both sides of the rectangular frame, and through holes for the spring insertion rods to pass through are constructed on both sides of the protective frame.

[0012] Furthermore, the test joint includes a connecting block fixedly connected to the second movable end of the cylinder push rod, the connecting block is configured with an electrical connection hole, a test rod is installed in the electrical connection hole through the sliding of a brush, a buffer spring 1 mounted on the test rod is connected between the upper end of the test rod and the connecting block, the telescopic joint includes a column groove configured at the bottom of the protective frame, an electrical connection column block is installed in the column groove through the sliding of a brush, and a buffer spring 2 is connected between the bottom of the electrical connection column block and the bottom of the column groove.

[0013] Furthermore, the temperature regulating component includes a liquid storage cavity constructed in a rectangular frame, and a heat conductive plate inserted in the liquid storage cavity is fixedly connected to the side of the rectangular frame opposite to the protective frame, a semiconductor cooling plate is fixedly connected to the heat conductive plate, and a heat sink is fixedly connected to the other side of the semiconductor cooling plate.

[0014] Furthermore, a guide groove is constructed on the bottom plate, and the movable plate includes a U-shaped frame slidably installed in the guide groove, a positioning bolt that is installed through the bottom thread of the U-shaped frame and abuts against the guide groove, a horizontal slot is constructed at one end of the top of the U-shaped frame, and the plug plate includes a U-shaped buckle plate, the horizontal section of the U-shaped buckle plate is inserted in the horizontal slot, and the vertical section of the U-shaped buckle plate is connected to a movable block slidably installed in the horizontal slot.

[0015] Furthermore, the driving member includes two sliding rods constructed on the moving block, the other ends of the two sliding rods slide through the U-shaped frame and are fixedly connected to the ends with a stop block, an energy storage spring mounted on the sliding rod is connected between the stop block and the U-shaped frame, and a trigger member for limiting the moving block is installed on the U-shaped frame.

[0016] Furthermore, an angled groove is constructed on the upper side of the moving block, and the trigger member includes a slider that slides through the top surface of the U-shaped frame, and a limiting angled block for plugging into the angled groove is constructed at the bottom of the slider, and an iron sheet is constructed on the top of the slider, and a vertical rod is fixedly connected to the iron sheet, and an L-shaped fixing plate arranged above the slider is fixedly connected to the U-shaped frame, the vertical rod slides through the L-shaped fixing plate and a reset spring is connected between the end portion and the L-shaped fixing plate, and an electromagnet that is movably mounted on the slider and located on the lower side of the iron sheet is fixedly connected to the U-shaped frame.

[0017] The beneficial effects of this application are as follows: The present application uses a snap-fit ​​structure of a protective frame and a supporting frame to clamp the battery, so that the battery can be wrapped during testing. When the battery leaks or burns, the smoke alarm will promptly trigger the seal to seal the battery to prevent damage to the equipment, increase safety, and eliminate the need for personnel to constantly observe the equipment, saving manpower.

[0018] The present application provides a temperature regulating component on the carrier frame, so as to control the temperature around the battery during the battery test, so as to facilitate control testing, increase test data, ensure the accuracy of the test, and improve the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of this application; Figure 2 This application Figure 1 The enlarged view of point A in the middle; Figure 3 It is a partial three-dimensional structural diagram of this application; Figure 4 This is a three-dimensional structural diagram of the bottom power connection part of this application; Figure 5 This application Figure 3 A partial cutaway view of the middle perspective; Figure 6 This application Figure 3 Another three-dimensional partial cross-sectional view; Figure 7 This is a three-dimensional structural diagram of another state of the bottom power connection part of the present application; Figure 8 This is an exploded view of the three-dimensional structure of the positioning member of this application; Fig. 9 It is a partial cross-sectional view of the three-dimensional structure of the seal of the present application.

[0020] Reference numerals: 1, bottom plate; 101, L-shaped support rod; 102, cylinder push rod 1; 103, mounting frame; 104, lifting joint; 105, strip groove; 106, positioning member; 1061, positioning round block; 1062, groove; 10621, fan-shaped block; 10622, arc groove; 1063, convex plate; 1064, positioning pin; 10641, support spring; 10642, semicircular block; 10643 , arc block; 107, cylinder push rod 2; 108, test joint; 1081, connection block; 1082, power connection hole; 1083, test rod; 1084, buffer spring 1; 109, guide groove; 2, bottom power connection piece; 201, protection frame; 2011, guide block; 202, expansion joint; 2021, column groove; 2022, power connection column block; 2023, buffer spring 2; 203, bearing frame; 203 1. rectangular frame; 2032. through-hole; 2033. elastic convex piece; 2034. spring plug rod; 2035. through-hole; 204. mounting slot; 3. thermostat; 301. liquid storage chamber; 302. heat conducting sheet; 303. semiconductor cooling sheet; 304. heat sink; 4. sealing element; 401. moving plate; 4011. U-shaped frame; 4012. positioning bolt; 4013. horizontal slot; 402. plug board; 402 1. U-shaped gusset plate; 4022. moving block; 40221. bevel groove; 403. horizontal groove; 404. smoke alarm; 5. driving member; 501. sliding rod; 502. stopper; 503. energy storage spring; 504. trigger member; 5041. slider; 5042. limit bevel block; 5043. iron sheet; 5044. vertical rod; 5045. L-shaped fixing plate; 5046. reset spring; 5047. electromagnet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0022] like Figure 1-Figure 4 As shown, an electrical performance testing device for a sodium ion battery hard carbon negative electrode material according to an embodiment of the present application includes: The bottom plate 1 has an L-shaped support rod 101 fixedly connected to one end of the bottom plate 1, a cylinder push rod 102 fixedly connected to the horizontal section of the L-shaped support rod 101, a mounting frame 103 fixedly connected to the output end of the cylinder push rod 102, and a plurality of lifting joints 104 connected to the mounting frame 103. The mounting frame 103 can be driven to move along the length direction of the bottom plate 1 by the cylinder push rod 102, so as to transfer the lifting joint 104 to the top of the battery for convenient testing. After the test, the lifting joint 104 can also be moved away, which is convenient for personnel to install and remove the battery, thereby increasing the flexibility of the device; The bottom power connection part 2 includes a protection frame 201 installed on the bottom plate 1. One side and the top of the protection frame 201 are both constructed to be open. A telescopic joint 202 is installed at the bottom of the protection frame 201. A bearing frame 203 that is flipped and plugged into the inside of the protection frame 201 is hinged at the bottom of the open side of the protection frame 201. Two mounting grooves 204 for clamping the battery are constructed in the bearing frame 203. The telescopic joint 202 passes through the bottom of the mounting groove 204 and contacts the negative electrode of the battery. The bearing frame 203 is used as a battery mounting component, and its bottom corner is hingedly connected to the bottom corner of the protection frame 201. When installing the battery, it is only necessary to flip the carrier frame 203 to a horizontal state so that the opening of the installation slot 204 is exposed at the top, and the battery is inserted therein, and then the carrier frame 203 is flipped to the inside of the protective frame 201, so that the negative pole of the battery can first contact with the telescopic joint 202, and the battery side is wrapped by the carrier frame 203 and the protective frame 201, which can play a protective role, and the lifting joint 104 on the mounting frame 103 is moved to the top of the battery by the cylinder push rod 102, and then the lifting joint 104 is extended and contacted with the positive pole of the battery to carry out the charge and discharge test; The temperature regulating member 3 is arranged on the carrier frame 203 and is used to regulate the temperature of the carrier frame 203. The temperature regulating member 3 is used to heat or cool the carrier frame 203 to regulate the ambient temperature around the battery, so as to test the temperature state change of the battery at different temperatures, increase the diversity of data, and ensure the accuracy of the test; The sealing member 4 comprises a movable plate 401 mounted on the bottom plate 1 and a smoke alarm 404 mounted on the mounting frame 103. A plug plate 402 is horizontally slidably mounted on the movable plate 401. Transverse grooves 403 arranged opposite to the plug plate 402 and located at the upper and lower ends of the mounting groove 204 are constructed on the protective frame 201 and the bearing frame 203. A driving member 5 for pushing the plug plate 402 to move is mounted on the movable plate 401. When the battery leaks and burns during the test, the driving member 5 can be triggered by the smoke alarm 404 to promptly push the plug plate 402 into the transverse groove 403 of the bearing frame 203, thereby isolating the two poles of the battery and sealing the upper and lower ends of the mounting groove 204, so that the battery combustion cannot affect the outside world, thereby ensuring the safety of the equipment and eliminating the need for personnel to pay attention to the equipment all the time, saving manpower.

[0023] like Figure 1As shown, in some embodiments, four strip grooves 105 are constructed on the bottom plate 1 along its length direction, and the protective frames 201 are slidably installed in the strip grooves 105 in groups of two. A positioning piece 106 is connected between the protective frame 201 and the bottom plate 1. Four cylinder push rods 107 are fixedly connected to the mounting frame 103, and the output ends of the cylinder push rods 107 are connected to the test connector 108. Four protective frames 201 are in a batch, and two are in a group. Multiple batches of protective frames 201 can be installed on the bottom plate 1 at the same time. The lifting connector 104 can be transferred to different batches for testing by moving the cylinder push rod 102, without the need to disassemble and install the battery multiple times, which increases convenience. The batteries in the two protective frames 201 in a group can be subjected to a comparative test, that is, the test data of two batteries using different hard carbon negative electrode materials are compared. The batteries in the two groups of protective frames 201 in a batch can be tested at different ambient temperatures, so that double comparative tests can be performed in the same batch test, thereby increasing the functionality and flexibility of the device.

[0024] like Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments, the bottom of the protective frame 201 is configured with two guide blocks 2011 slidably installed in the strip groove 105, the positioning member 106 includes a plurality of positioning round blocks 1061 arrayed and installed on the bottom plate 1 and located on the side of the strip groove 105, the positioning round blocks 1061 are configured with grooves 1062, and the bottom of the protective frame 201 is configured with convex plates 1063 on both sides, and the convex plates 1063 are movably penetrated and installed with positioning pins 1064 that are plugged into the grooves 1062. The plug-in cooperation of the positioning pins 1064 and the grooves 1062 can be used to align the protective frame. The horizontal movement of 201 is limited to ensure the docking accuracy with the lifting joint 104, and the guide block 2011 is rectangular in shape and can slide horizontally or vertically with the strip groove 105. Therefore, the protective frame 201 can be pulled out of the range of the base plate 1 at any time, which is convenient for removing the protective frame 201 at any time when an accident occurs to the battery to prevent it from affecting the equipment. In addition, a plurality of positioning round blocks 1061 can be provided to facilitate changing the position of the protective frame 201, and the number of protective frames 201 can also be increased to provide flexibility to the device.

[0025] like Figure 8As shown, in some embodiments, a sector block 10621 is constructed in the groove 1062, and an arc groove 10622 is constructed at one end of the sector block 10621. A support spring 10641 is connected between the top of the positioning pin 1064 and the convex plate 1063 and is sleeved on the positioning pin 1064. A semicircular block 10642 is constructed at the bottom of the positioning pin 1064, and an arc block 10643 for rotating and plugging the arc groove 10622 is constructed on the semicircular block 10642. It should be noted that when the positioning pin 1064 is outside the arc groove 10622 and is not subjected to force, the support spring 10641 connects the positioning pin 1064 and the convex plate 1063, so that the bottom of the positioning pin 1064 is The arc block 10643 and the arc groove 10622 are arranged opposite to each other up and down. When the semicircular block 10642 at the bottom of the positioning pin 1064 is inserted into the groove 1062, the positioning pin 1064 needs to be rotated to rotate and accumulate force on the support spring 10641 so that the arc block 10643 can move to the end of the arc groove 10622. Then, the elastic force of the support spring 10641 can be used to drive the arc block 10643 to be inserted into the arc groove 10622 by itself. At this time, the support spring 10641 can play a limiting role to prevent the positioning pin 1064 from easily detaching, thereby fixing the protective frame 201 as a whole and increasing the structural stability.

[0026] like Figure 6-Figure 7 As shown, in some embodiments, the supporting frame 203 includes a rectangular frame 2031 hinged at the bottom of the protective frame 201, the mounting groove 204 is constructed on the side of the rectangular frame 2031 facing the protective frame 201, and the upper and lower ends of the mounting groove 204 are constructed with through-holes 2032, and both sides of the opening of the mounting groove 204 are constructed with elastic protrusions 2033 for clamping the battery, and spring insertion rods 2034 are installed on both sides of the rectangular frame 2031, and through holes 2035 for the spring insertion rods 2034 to pass through are constructed on both sides of the protective frame 201. It should be noted that the opening end of the mounting groove 204 is V-shaped, and the spring protrusion adopts an arc-shaped sheet structure made of elastic plastic material, which can produce elastic deformation, thereby limiting the battery entering the mounting groove 204 to prevent it from easily detaching from the mounting groove 204, and the battery can be limited between the through-holes 2032 at the upper and lower ends of the mounting groove 204 to facilitate contact with the lifting joint 104 and the telescopic joint 202.

[0027] like Figure 1 , Figure 2 and Figure 6As shown, in some embodiments, the test joint 108 includes a connection block 1081 fixedly connected to the movable end of the cylinder push rod 107, the connection block 1081 is configured with an electrical connection hole 1082, a test rod 1083 is installed in the electrical connection hole 1082 through a brush sliding through, a buffer spring 1084 sleeved on the test rod 1083 is connected between the upper end of the test rod 1083 and the connection block 1081, and the telescopic joint 202 includes a column groove 2021 configured at the bottom of the protective frame 201, and the column groove 2021 is configured to be a plurality of columns. A power post block 2022 is installed in 21 through brush sliding, and a buffer spring 2023 is connected between the bottom of the power post block 2022 and the bottom of the column groove 2021. The test rod 1083 and the power post block 2022 are connected to the buffer spring 1084 and the buffer spring 2023 respectively, so that the test rod 1083 and the power post block 2022 have certain expansion and contraction characteristics, and there will be no impact and conflict when contacting the two poles of the battery. The elastic contact is safer, avoids damage to the battery, and increases the safety of the device.

[0028] like Figure 6 As shown, in some embodiments, the temperature regulating component 3 includes a liquid storage cavity 301 constructed in a rectangular frame 2031, and the liquid storage cavity 301 is filled with heat transfer oil, which can effectively conduct heat, and the rectangular frame 2031 is wrapped around the battery to simulate the ambient temperature to test the stability data of the battery at different temperatures. The side of the rectangular frame 2031 opposite to the protective frame 201 is fixedly connected with a heat conductive sheet 302 inserted in the liquid storage cavity 301, and a semiconductor cooling sheet 303 is fixedly connected to the heat conductive sheet 302, and a heat sink 304 is fixedly connected to the other side of the semiconductor cooling sheet 303. One side of the semiconductor cooling sheet 303 is a heating surface, and the other side is a cooling surface. The heat conductive sheet 302 and the heat sink 304 are respectively connected on both sides. The switching of the cooling surface and the heating surface can be controlled by switching the power connection direction, so as to control the heating and cooling operations in the liquid storage cavity 301, making the device more flexible.

[0029] like Figure 1 and Fig. 9As shown, in some embodiments, the bottom plate 1 is configured with a guide groove 109, the movable plate 401 includes a U-shaped frame 4011 slidably installed in the guide groove 109, the bottom thread of the U-shaped frame 4011 is penetrated by a positioning bolt 4012 that abuts against the guide groove 109, a horizontal slot 4013 is configured at one end of the top of the U-shaped frame 4011, and the plug plate 402 includes a U-shaped buckle plate 4021, the horizontal section of the U-shaped buckle plate 4021 is inserted in the horizontal groove 403, and the vertical section of the U-shaped buckle plate 4021 is connected to a movable block 4022 slidably installed in the horizontal slot 4013, and the U-shaped buckle plate 4021 adopts Insulating materials, such as rubber sheets, are used to be inserted into the transverse groove 403 to seal the through-holes 2032 at both ends of the mounting groove 204, thereby isolating the battery from contacting the lifting joint 104 and the telescopic joint 202, and timely disconnecting the electrical connection of the battery to reduce the risk of combustion. At the same time, the battery is sealed inside the carrier frame 203 and the protective frame 201 to avoid damage to the test equipment. The guide groove 109 and the positioning bolt 4012 can change the position of the U-shaped frame 4011 and move it to the side of the protective frame 201 being tested. Only a single seal 4 is needed for repeated use, saving equipment costs.

[0030] like Figure 3 and Fig. 9 As shown, in some embodiments, the driving member 5 includes two sliding rods 501 constructed on the moving block 4022, the other ends of the two sliding rods 501 slide through the U-shaped frame 4011 and are fixedly connected to the end with a stopper 502, and an energy storage spring 503 mounted on the sliding rod 501 is connected between the stopper 502 and the U-shaped frame 4011, and a trigger member 504 for limiting the moving block 4022 is installed on the U-shaped frame 4011. When the battery burns, the smoke alarm 404 will control the trigger member 504 through an electrical signal to disconnect the limit on the moving block 4022, so that the energy storage spring 503 quickly pushes the stopper 502 toward the U-shaped frame 4011, so that the U-shaped buckle plate 4021 is inserted into the horizontal groove 403 in time, and the spring is triggered to ensure the plug-in speed, which can cut off the battery connection more quickly and increase safety.

[0031] like Fig. 9As shown, in some embodiments, the upper side of the moving block 4022 is configured with an angled groove 40221, the trigger member 504 includes a slider 5041 that slides through the top surface of the U-shaped frame 4011, the bottom of the slider 5041 is configured with a limiting inclined block 5042 for plugging into the angled groove 40221, the top of the slider 5041 is configured with an iron sheet 5043, the iron sheet 5043 is fixedly connected with a vertical rod 5044, the U-shaped frame 4011 is fixedly connected with an L-shaped fixing plate 5045 arranged above the slider 5041, the vertical rod 5044 slides through the L-shaped fixing plate 5045 and a return spring 5046 is connected between the end of the vertical rod 5044 and the L-shaped fixing plate 5045, and the U-shaped frame 4011 is fixedly connected with a movable sleeve on the slider 5041 and located at the lower side of the iron sheet 5043 Electromagnet 5047, in the initial state, electromagnet 5047 is energized to adsorb the iron sheet 5043. At this time, the limiting bevel block 5042 at the bottom of the slider 5041 is inserted into the bevel groove 40221, and the vertical planes of the two conflict with each other to prevent the slider 5041 from escaping from the horizontal slot 4013. When the smoke alarm 404 is triggered, the electromagnet 5047 loses power, and the reset spring 5046 is free from the restriction, and the slider 5041 is quickly driven upward by the elastic force, so that the limiting bevel block 5042 is separated from the bevel groove 40221, and then the energy storage spring 503 pushes the U-shaped buckle plate 4021 into the horizontal groove 403 to complete the sealing. Using the spring as the trigger driving force can quickly respond, ensure the power cutting speed, and increase safety.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sodium ion battery hard carbon negative electrode material electrical performance testing equipment, characterized in that: include: A bottom plate (1), one end of the bottom plate (1) being fixedly connected to an L-shaped support rod (101), a horizontal section of the L-shaped support rod (101) being fixedly connected to a cylinder push rod 1 (102), an output end of the cylinder push rod 1 (102) being fixedly connected to a mounting frame (103), and a plurality of lifting joints (104) being connected to the mounting frame (103); The bottom power connection member (2) comprises a protection frame (201) mounted on the bottom plate (1), one side and the top of the protection frame (201) are both constructed to be open, a telescopic joint (202) is installed at the bottom of the protection frame (201), a bearing frame (203) is hingedly connected to the bottom of the open side of the protection frame (201) and is flipped and plugged into the inside, two mounting grooves (204) for clamping batteries are constructed in the bearing frame (203), and the telescopic joint (202) passes through the bottom of the mounting groove (204) and contacts the negative electrode of the battery; A temperature regulating component (3), arranged on the carrying frame (203) and used for regulating the temperature of the carrying frame (203); The sealing member (4) comprises a movable plate (401) mounted on a bottom plate (1) and a smoke alarm (404) mounted on a mounting frame (103); a plug plate (402) is mounted on the movable plate (401) in a horizontally slidable manner; transverse grooves (403) arranged opposite to the plug plate (402) and located at the upper and lower ends of the mounting groove (204) are formed on the protection frame (201) and the bearing frame (203); and a driving member (5) for pushing the plug plate (402) to move is mounted on the movable plate (401).

2. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 1, characterized in that: The bottom plate (1) is provided with four strip grooves (105) in groups of two along its length direction; the protection frames (201) are slidably mounted in groups of two in the strip grooves (105); a positioning member (106) is connected between the protection frame (201) and the bottom plate (1); four cylinder push rods (107) are fixedly connected to the mounting frame (103); and the output ends of the cylinder push rods (107) are all connected to test connectors (108).

3. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 2, characterized in that: The bottom of the protective frame (201) is constructed with two guide blocks (2011) slidably mounted in the strip groove (105); the positioning member (106) comprises a plurality of positioning round blocks (1061) mounted in an array on the bottom plate (1) and located on the side of the strip groove (105); a groove (1062) is constructed in the positioning round block (1061); both sides of the bottom of the protective frame (201) are constructed with convex plates (1063); and positioning pins (1064) are movably installed on the convex plates (1063) and are engaged with the grooves (1062).

4. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 3, characterized in that: A fan-shaped block (10621) is constructed in the groove (1062), and an arc-shaped groove (10622) is constructed at one end of the fan-shaped block (10621). A support spring (10641) sleeved on the positioning pin (1064) is connected between the top of the positioning pin (1064) and the convex plate (1063). A semicircular block (10642) is constructed at the bottom of the positioning pin (1064), and an arc-shaped block (10643) for rotatably plugging into the arc-shaped groove (10622) is constructed on the semicircular block (10642).

5. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 1, characterized in that: The carrying frame (203) comprises a rectangular frame (2031) hinged at the bottom of the protective frame (201); the mounting groove (204) is constructed on the side of the rectangular frame (2031) facing the inside of the protective frame (201); both upper and lower ends of the mounting groove (204) are constructed with through openings (2032); both sides of the opening of the mounting groove (204) are constructed with elastic protrusions (2033) for clamping the battery; spring insertion rods (2034) are installed on both sides of the rectangular frame (2031); and both sides of the protective frame (201) are constructed with through holes (2035) for the spring insertion rods (2034) to pass through.

6. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 2, characterized in that: The test joint (108) comprises a connecting block (1081) fixedly connected to the movable end of the second cylinder push rod (107); the connecting block (1081) is provided with an electric connection hole (1082); a test rod (1083) is installed in the electric connection hole (1082) by sliding through an electric brush; a buffer spring (1084) sleeved on the test rod (1083) is connected between the upper end of the test rod (1083) and the connecting block (1081); the telescopic joint (202) comprises a column groove (2021) constructed at the bottom of the protective frame (201); a power connection column block (2022) is installed in the column groove (221) by sliding through an electric brush; a buffer spring (2023) is connected between the bottom of the power connection column block (2022) and the bottom of the column groove (2021).

7. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 5, characterized in that: The temperature regulating component (3) comprises a liquid storage cavity (301) constructed in a rectangular frame (2031); a heat conducting plate (302) inserted in the liquid storage cavity (301) is fixedly connected to a side of the rectangular frame (2031) opposite to the protective frame (201); a semiconductor cooling plate (303) is fixedly connected to the heat conducting plate (302); and a heat sink (304) is fixedly connected to the other side of the semiconductor cooling plate (303).

8. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 1, characterized in that: The bottom plate (1) is provided with a guide groove (109); the movable plate (401) comprises a U-shaped frame (4011) slidably mounted in the guide groove (109); a positioning bolt (4012) is installed through a threaded bottom of the U-shaped frame (4011) and abuts against the guide groove (109); a horizontal slot (4013) is provided at one end of the top of the U-shaped frame (4011); the plug plate (402) comprises a U-shaped buckle plate (4021); a horizontal section of the U-shaped buckle plate (4021) is inserted into the horizontal groove (403); and a movable block (4022) slidably mounted in the horizontal slot (4013) is connected to a vertical section of the U-shaped buckle plate (4021).

9. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 8, characterized in that: The driving member (5) comprises two sliding rods (501) constructed on the moving block (4022); the other ends of the two sliding rods (501) slide through the U-shaped frame (4011) and are fixedly connected to the ends with a stopper (502); an energy storage spring (503) sleeved on the sliding rod (501) is connected between the stopper (502) and the U-shaped frame (4011); and a trigger member (504) for limiting the moving block (4022) is installed on the U-shaped frame (4011).

10. The electrical performance testing equipment for hard carbon negative electrode materials of sodium ion batteries according to claim 9, characterized in that: The moving block (4022) is provided with an angled groove (40221) on its upper side, the trigger member (504) comprises a slider (5041) that slides through the top surface of the U-shaped frame (4011), the bottom of the slider (5041) is provided with a limiting angled block (5042) for plugging into the angled groove (40221), the top of the slider (5041) is provided with an iron sheet (5043), and the iron sheet (5043) is fixedly connected with a vertical rod (5044), The U-shaped frame (4011) is fixedly connected to an L-shaped fixing plate (5045) arranged above the sliding block (5041); the vertical rod (5044) slides through the L-shaped fixing plate (5045) and a return spring (5046) is connected between the end and the L-shaped fixing plate (5045); and the U-shaped frame (4011) is fixedly connected to an electromagnet (5047) that is movably sleeved on the sliding block (5041) and located at the lower side of the iron sheet (5043).

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