Performance detection device for negative-electrode-free sodium ion battery

Abstract

The invention provides a performance detection device for a negative-electrode-free sodium ion battery, and the device comprises a box body which is internally provided with an accommodation space; the box body is connected with a puncture assembly; the battery fixing piece is arranged in the accommodating space; the conveying assembly is connected with the box body and is used for conveying the to-be-tested battery to the battery fixing piece; the energy supply assembly is electrically connected with the safety assembly, the puncturing assembly, the conveying assembly and the battery fixing part; the safety assembly is connected with the box body; the safety assembly is electrically connected with the energy supply assembly. The safety assembly comprises a container, a sealing plate, a fire extinguishing ball and a locking piece. The sealing plate has two use states, and in the first use state, the sealing plate seals the opening end of the container; and in the second use state, the sealing plate releases the sealing of the opening end of the container. The device comprises a puncture assembly and an electrifying sheet; a conductive wire; and through the arrangement of the conducting strip, the equipment has multiple performance testing functions, and the testing efficiency of the battery is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of transport equipment, and in particular relates to a performance detection device for a negative electrode-free sodium ion battery. Background Art

[0002] Sodium ion battery is a kind of rechargeable battery. When producing batteries, the performance of the battery needs to be tested to improve the quality of the battery. The battery performance test items include capacity test, discharge overcurrent protection test, charge overvoltage protection test, discharge overvoltage protection test, abnormal charge test, reverse charge test, maximum current short circuit protection test, puncture test, etc.

[0003] In the prior art, a variety of equipment is used when testing batteries. For example, when performing thermal shock tests on sodium-ion effective batteries, a battery thermal shock tester is commonly used. When performing short-circuit tests on sodium-ion batteries, a battery short-circuit tester is commonly used. When performing free-fall tests on sodium-ion batteries, a battery free-fall tester is commonly used. However, the detection function of each detection device is relatively single, which means that sodium-ion batteries must be placed in corresponding equipment for detection in turn to complete all detection items. This not only takes a long time to detect, but also easily causes missed detection, multiple detection, and the like due to human errors between detection items. In addition, during the battery transfer process, the battery may have delayed explosion, etc., which reduces safety. Therefore, a sodium-ion battery effective battery testing device is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a performance detection device for a negative electrode-free sodium ion battery, aiming to solve the technical problems of single detection equipment function and low battery detection efficiency in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a performance detection device for a negative electrode-free sodium ion battery, comprising:

[0006] A box body, with a containing space inside; the box body is connected to a puncture assembly;

[0007] A battery fixing member is arranged in the accommodation space;

[0008] A transport assembly connected to the box body and used to transport the battery to be tested to the battery fixture;

[0009] An energy supply component, electrically connected to the safety component, the puncture component, the transport component, and the battery fixing component;

[0010] A safety component is connected to the box body; the safety component is electrically connected to the energy supply component; the safety component includes: a container, a sealing plate, a fire extinguishing ball and a locking piece, the container is connected to the box body, and the open end of the container is connected to the inside of the box body; the sealing plate has two usage states, in the first usage state, the sealing plate seals the open end of the container; in the second usage state, the sealing plate releases the seal on the open end of the container; the fire extinguishing ball is arranged in the container; the locking piece has a first usage state and a second usage state, in the first usage state, the locking piece simultaneously connects the container and the sealing plate, and the sealing plate is in the first usage state; in the second usage state, the locking piece releases the connection with the sealing plate, and the sealing plate is in the second usage state.

[0011] Preferably, the battery fixing member comprises:

[0012] A frame is arranged on the bottom surface of the accommodation space;

[0013] A power supply sheet is disposed in the frame; the power supply sheet is electrically connected to the energy supply component;

[0014] A conductive wire is disposed in the frame;

[0015] A conductive sheet is disposed in the frame; the conductive member includes a positive electrode sheet electrically connected to the positive electrode of the external electrical device and a negative electrode sheet electrically connected to the negative electrode of the external electrical device;

[0016] A contact plate is elastically connected to the frame; the contact plate is provided with a positive electrode contact position and a negative electrode contact position for electrically connecting to the positive and negative electrodes of the battery respectively;

[0017] A connecting shaft connected to the contact disc;

[0018] A first contact piece is connected to the connecting shaft; the first contact piece is electrically connected to the positive electrode contact position

[0019] The second contact piece is connected to the connecting shaft; the second contact piece is electrically connected to the contact position of the negative electrode.

[0020] Preferably, the side surface of the frame is provided with a first groove arranged along the height direction, and a first groove, a second groove, and a third groove arranged at intervals from top to bottom along the height direction and all connected to the first groove; the first groove is adapted to the first contact piece and / or the second contact piece; the end point of the power-carrying sheet is exposed on the end surface of the first groove; the end point of the conductive wire is exposed on the end surface of the second groove; and the end point of the conductive sheet is exposed on the end surface of the third groove.

[0021] Preferably, the frame is provided with a first sliding block adapted to the first groove; and / or

[0022] The frame is provided with a second sliding block adapted to the second groove; and / or

[0023] The frame body is provided with a third sliding block adapted to the third groove.

[0024] Preferably, the locking element is a meltable sealing wax structure.

[0025] Preferably, the locking member comprises:

[0026] A tension spring, one end of which is connected to the sealing plate and the other end of which is provided with a connecting portion;

[0027] A temperature sensor is arranged on the sealing plate;

[0028] An electric clamping column structure is arranged on the container, and the electric clamping column structure is communicatively connected with the temperature sensor;

[0029] When the temperature is higher than a preset value, the temperature sensor transmits a signal to the electric clamping column structure, and the electric clamping column is separated from the tension spring.

[0030] Preferably, the puncture assembly comprises:

[0031] A driving motor is arranged on the box body;

[0032] A screw structure is arranged on the box body, one end of the screw structure extends into the box body, and the drive motor can drive the screw structure to move in the up and down directions;

[0033] An elastic connecting piece connected to one end of the screw structure extending into the box body;

[0034] A buffer head is connected to the end of the elastic connecting member away from the screw structure; a through hole is provided in the middle of the buffer head;

[0035] A piercing head, one end of which and one end of the screw structure extend into the box body, and the piercing head is adapted to the through hole.

[0036] Preferably, the buffer head is a capsule structure, and the buffer head is filled with inert gas.

[0037] Preferably, the transport assembly comprises:

[0038] A connecting plate connected to the box body;

[0039] A movable plate, slidably connected to the connecting plate;

[0040] A roller conveying structure is arranged on the upper end surface of the movable plate; the roller conveying structure is used to convey the battery to be tested to the contact plate.

[0041] Preferably, the housing comprises:

[0042] A base, in which the energy supply component is arranged;

[0043] A box body is arranged on the base, at least one of the left and right ends of the box body is an open end; the open end is connected to the accommodating space; and the transport assembly is arranged on one side of the open end;

[0044] Side panels are slidably connected to the open ends.

[0045] The beneficial effect of the performance testing device for a sodium-ion battery without a negative electrode provided by the present invention is that: compared with the prior art, the performance testing device for a sodium-ion battery without a negative electrode provided by the present invention can transport the battery to be tested to the battery fixture through the setting of the transport component. Through the setting of the puncture component, the power-on sheet; the conductive wire; the conductive sheet, the device has a variety of performance testing functions to improve the testing efficiency of the battery. And the battery is in a sealed box during multiple tests, which improves the safety of the battery during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 A schematic structural diagram of a performance detection device for a negative electrode-free sodium ion battery provided by an embodiment of the present invention;

[0048] Figure 2 A schematic diagram of a performance detection device for a sodium ion battery without a negative electrode (without the side plate) provided in an embodiment of the present invention Figure 1 ;

[0049] Figure 3 A schematic diagram of a performance detection device for a sodium ion battery without a negative electrode (without the side plate) provided in an embodiment of the present invention Figure 2 ;

[0050] Figure 4 A schematic diagram of the structure of a battery fixing member used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 1 ;

[0051] Figure 5 A schematic diagram of the structure of a battery fixing member used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 2 ;

[0052] Figure 6 A schematic diagram of the structure of a puncture assembly used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 1 ;

[0053] Figure 7 A schematic diagram of the structure of a puncture assembly used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 2 ;

[0054] Figure 8 A schematic diagram of the structure of a safety component used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 1 ;

[0055] Fig. 9 A schematic diagram of the structure of a safety component used in a performance detection device for a sodium ion battery without a negative electrode provided in an embodiment of the present invention Figure 2 ;

[0056] Fig.10 for Fig. 9 Schematic diagram of the structure in section along line AA.

[0057] In the figure: 1. box body; 11. base; 12. box body; 13. side panel; 2. energy supply component; 3. battery fixing part; 31. frame; 32. power supply sheet; 33. conductive wire; 34. conductive sheet; 35. contact plate; 36. connecting shaft; 37. first contact piece; 38. second contact piece; 4. safety component; 41. container; 42. sealing plate; 43. locking piece; 44. fire extinguishing ball; 5. puncture component; 51. driving motor; 52. screw structure; 53. elastic connecting piece; 54. buffer head; 55. puncture head; 6. transport component; 61. connecting plate; 62. movable plate; 63. roller conveying structure. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0059] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0060] Reference Figures 1 to 10 , now a performance detection device for a sodium-ion battery without a negative electrode provided by the present invention is described. The performance detection device for a sodium-ion battery without a negative electrode comprises: a box body 1, a battery fixing part 3, a puncture component 5, a transport component 6, a safety component 4 and an energy supply component 2, wherein a storage space is provided in the box body 1; the battery fixing part 3 is arranged in the storage space; the puncture component 5 is connected to the box body 1; the transport component 6 is connected to the box body 1, and is used to transport the battery to be tested to the battery fixing part 3; the energy supply component 2 is electrically connected to the safety component 4, the puncture component 5, the transport component 6, and the battery fixing part 3; the safety component 4 is connected to the box body 1; the safety component 4 is electrically connected to the energy supply component 2. The safety component 4 includes: a container 41, a sealing plate 42, a fire extinguishing ball 44 and a locking member 43. The container 41 is connected to the box body 1, and the open end of the container 41 is connected to the inside of the box body 1; the sealing plate 42 is movably connected to the open end of the container 41; the sealing plate 42 has two use states. In the first use state, the sealing plate 42 seals the open end of the container 41; in the second use state, the sealing plate 42 releases the seal on the open end of the container 41; the sealing plate 42 is rotatably connected to the container 41 through a rotating shaft structure. The fire extinguishing ball 44 is arranged in the container 41; the locking member 43 has a first use state and a second use state. In the first use state, the locking member 43 simultaneously connects the container 41 and the sealing plate 42, and the sealing plate 42 is in the first use state; in the second use state, the locking member 43 releases the connection with the sealing plate 42, and the sealing plate 42 is in the second use state. The sealing plate 42 is made of heat-conductive material.

[0061] As a specific implementation of the embodiment of the present invention, refer to Figures 1 to 10 The box body 1 includes: a base 11, a box body 12 and a side plate 13. The box body 12 is arranged on the base 11. At least one of the left and right ends of the box body 12 is an open end; the open end is connected to the accommodating space; and the side plate 13 is slidably connected to the open end. The energy supply component 2 is arranged in the base 11. The transport component 6 is arranged on one side of the open end.

[0062] In some feasible embodiments, the left and right sides of the box body 12 are open ends respectively. A side plate 13 is slidably connected to each open end. A transport assembly 6 is provided on one side of the open end. Specifically, the battery to be tested is transported into the box body 12 by a group of transport assemblies 6, and then transported to the battery fixing member 3. After the performance monitoring is completed, the transport assembly 6 on the other side transports the battery from the battery fixing member 3 to the transport assembly 6, and then transports it out of the box body 12. A third drive motor is provided on the box body 12, and the rotating end of the third drive motor is wrapped with a connecting belt, and the end of the connecting belt away from the third drive motor is connected to the side plate 13. The third drive motor can be operated by winding the connecting belt, thereby driving the side plate 13 to move upward. The storage space of the box body 12 is connected to the external environment. Then, the battery can be transported to or from the box body 12. When the third drive motor releases the connecting belt, the side plate 13 moves downward to achieve the effect of sealing the open end. The third drive motor is electrically connected to the energy supply assembly 2. The energy supply component 2 is used to provide electrical energy to the third drive motor.

[0063] As a specific implementation of the embodiment of the present invention, refer to Figures 1 to 10 The battery fixing member 3 includes: a frame 31, a power sheet 32, a conductive wire 33, a conductive sheet 34, a contact plate 35, a connecting shaft 36, a first contact member 37, and a second contact member 38. The frame 31 is arranged on the bottom surface of the accommodating space; the frame 31 is made of insulating material. The power sheet 32 ​​is arranged in the frame 31. The power sheet 32 ​​includes a positive electrode sheet electrically connected to the positive electrode of the energy supply component 2 and a negative electrode sheet electrically connected to the negative electrode of the energy supply component 2; the positive electrode sheet and the negative electrode sheet are arranged at a certain distance; the conductive wire 33 is arranged in the frame 31; the conductive wire 33 is arranged in the frame 31 along the horizontal direction. The conductive sheet 34 is arranged in the frame 31. The conductive member 34 includes a positive electrode sheet electrically connected to the positive electrode of the external electrical device and a negative electrode sheet electrically connected to the negative electrode of the external electrical device; the positive electrode sheet and the negative electrode sheet are arranged at a certain distance; the contact plate 35 is elastically connected to the frame 31; the contact plate 35 is provided with a positive electrode contact position and a negative electrode contact position for electrically connecting to the positive and negative electrodes of the battery respectively; the contact plate 35 is elastically connected to the upper end surface of the frame 31 through a spring. The connecting shaft 36 is rotatably connected to the contact plate 35; the first contact member 37 is connected to the connecting shaft 36; the first contact member 37 is electrically connected to the positive electrode contact position. The second contact member 38 is connected to the connecting shaft 36; the second contact member 38 is arranged at a certain distance from the first contact member 37; the second contact member 38 is electrically connected to the negative electrode contact position.

[0064] In any feasible embodiment, the left and right sides of the frame 31 are respectively provided with a first groove provided along the height direction, and a first groove, a second groove, and a third groove are provided from top to bottom along the height direction and are connected to the first groove; the first groove is adapted to the first contact member 37 or the second contact member 38. One end of the power sheet 32 ​​is exposed on the end surface of the first groove; the two ends of the conductive wire 33 are exposed on the end surface of the second groove. The two ends of the conductive sheet 34 are exposed on the end surface of the third groove.

[0065] In any feasible embodiment, a first slider adapted to the first groove is provided on the frame 31, and the first slider is slidably connected to the first groove. When the first slider is subjected to force, it will slide relative to the first groove, and when the first slider slides to a specific position relative to the first groove, one end of the power sheet 32 ​​will be exposed to the external environment.

[0066] In this embodiment, a second slider adapted to the second groove is provided on the frame 31, and the second slider is slidably connected to the second groove. When the second slider is subjected to force, it will slide relative to the second groove, and when the second slider slides to a specific position relative to the second groove, one end of the conductive wire 33 will be exposed to the external environment.

[0067] In this embodiment, a third slider adapted to the third groove is provided on the frame 31, and the third slider is slidably connected to the third groove. When the third slider is subjected to force, it will slide relative to the third groove, and when the third slider slides to a specific position relative to the third groove, one end of the conductive sheet 34 will be exposed to the external environment.

[0068] In any feasible embodiment, the structure of the first contact member 37 is the same as that of the second contact member 38. The first contact member 37 includes a connecting portion connected to the connecting shaft 36, a rod body connected to the connecting portion, and a conductive portion connected to the rod body. The conductive portion is electrically connected to the positive electrode contact position or the negative electrode contact position. The connecting portion is connected to the conductive portion through an electric telescopic rod. The electric telescopic rod can push the conductive portion into a preset arc groove.

[0069] As a specific implementation of the embodiment of the present invention, refer to Figures 1 to 10 The sealing plate 42 is movably connected to the open end of the container 41; the sealing plate 42 is rotatably connected to the container 41 through a rotating shaft structure.

[0070] In any feasible embodiment, the locking member 43 is a meltable sealing wax structure. Under normal use, the sealing plate 42 is in the first use state, and the sealing wax is sealed and connected to the container 41 and the sealing plate 42 at the same time. When the sealing plate 42 is heated to a certain temperature, the sealing wax melts and falls into the container 41. The sealing plate 42 separates from the container 41, and the fire extinguishing ball 43 falls into the box body 12 to play a fire extinguishing role. At the same time, the melted wax also has the function of extinguishing fire by isolating the air.

[0071] In another feasible embodiment, the locking member 43 includes a tension spring connected to the sealing plate 42, a temperature sensor disposed on the sealing plate 42, and an electric clamping column structure disposed on the container 41, and the electric clamping column is communicatively connected to the temperature sensor. A clamping ring is provided at one end of the tension spring away from the sealing plate 42. Specifically, when the sealing plate 42 is connected to the locking member 43 and seals the open end of the container 41, the electric clamping column passes through the clamping ring of the tension spring in the up and down directions. When the temperature is higher than the preset value, the temperature sensor transmits a signal to the electric clamping column structure, and the electric clamping column expands and contracts after receiving the signal. When it expands and contracts to a certain extent, the electric clamping column separates from the tension spring. At this time, the sealing plate 42 releases the seal on the open end of the container 41. The fire extinguishing ball 43 falls into the box body 12 to play a fire extinguishing role.

[0072] As a specific implementation of the embodiment of the present invention, refer to Figures 1 to 10 The puncture assembly 5 includes: a driving motor 51, a screw structure 52, an elastic connector 53, a buffer head 54 and a puncture head 55. The driving motor 51 is arranged on the box body 12; the screw structure 52 is arranged on the box body 12, one end of the screw structure 52 extends into the box body 12, and is connected to the driving motor 51 through a gear structure, and the driving motor 51 can drive the screw structure 52 to move in the up and down directions; the elastic connector 53 is connected to one end of the screw structure 52 extending into the box body 12; the buffer head 54 is connected to one end of the elastic connector 53 away from the screw structure 52, the buffer head 54 is a capsule structure, and the buffer head 54 is filled with inert gas; a through hole is provided in the middle of the buffer head 54; one end of the puncture head 55 and one end of the screw structure 52 extend into the box body 12, and the other end can penetrate into the battery to be tested through the through hole. The puncture assembly 5 has the functions of fixing the battery to be tested and performing puncture experiments on the battery to be tested.

[0073] In some feasible embodiments, the elastic connector 53 is a spring. The puncture head 55 is located inside the spring. The puncture head 55 corresponds to the penetration head of the buffer head 54. The operation of the drive motor 51 drives the screw structure 52 to move, and the screw structure 52 moves downward relative to the drive motor 51. The buffer head 54 contacts the battery to be tested, and the screw structure 52 continues to move downward, driving the battery to be tested and the contact plate 35 to move downward together. The process of the battery and the contact plate 35 moving downward can be divided into four stages. The first stage, the second stage, the third stage and the fourth stage respectively. In the first stage, the rotating sheet structure is adapted to the first groove. In the second stage, the rotating sheet is adapted to the second groove. In the third stage, the rotating sheet is adapted to the third groove. In the fourth stage, the relative position of the contact plate 35 no longer moves, and a penetration experiment can be performed at this time.

[0074] As a specific implementation of the embodiment of the present invention, refer to Figures 1 to 10 The conveying assembly 6 includes: a connecting plate 61, a movable plate 62 and a roller conveying structure 63, the connecting plate 61 is connected to the box body 12; the movable plate 62 is slidably connected to the connecting plate 61; the roller conveying structure 63 is arranged on the upper end surface of the movable plate 62; the roller conveying structure 63 is used to transport the battery to be tested to the contact plate 35.

[0075] In some feasible embodiments, the connecting plate 61 is slidably connected to the movable plate 62 through a screw structure. Specifically, the screw structure includes a second drive motor arranged in the connecting plate 61, a screw body arranged on the connecting plate 61, the screw body is transmission-connected to the second drive motor, and a movable part is provided on the screw body, and the movable part can generate reciprocating motion along the axial direction of the rod body when the screw body is in operation. The movable part is connected and fixed to the lower end surface of the movable plate 62. The motion component 6 has two functions, the first is transportation. The second is that the movable plate 62 can abut against the side plate 13 to fix the side plate 13.

[0076] The beneficial effect of the performance testing device for a sodium ion battery without a negative electrode provided by the present invention is that: compared with the prior art, through the setting of the transport component 6, the transport component 6 can transport the battery to be tested to the battery fixing member. Through the setting of the puncture component 5, the power sheet 32; the conductive wire 33; the conductive sheet 34, the device has multiple performance testing functions, which improves the test efficiency of the battery. And the battery is in a sealed box during multiple tests, which improves the safety of the battery during testing.

[0077] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0078] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0079] The above is a detailed introduction to a performance detection device for a negative electrode-free sodium ion battery provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for a general technician in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A performance detection device for a negative electrode-free sodium ion battery, characterized in that: include: A box body (1) is provided with a containing space therein; a puncture assembly (5) is connected to the box body (1); A battery fixing member (3) is arranged in the accommodation space; A transport assembly (6) connected to the box (1) and used to transport the battery to be tested to the battery fixing member (3); An energy supply component (2) is electrically connected to the safety component (4), the puncture component (5), the transport component (6), and the battery fixing component (3); A safety component (4) is connected to the box (1); the safety component (4) is electrically connected to the energy supply component (2); the safety component (4) comprises: a container (41), a sealing plate (42), a fire extinguishing ball (44) and a locking member (43); the container (41) is connected to the box (1), and the open end of the container (41) is in communication with the interior of the box (1); the sealing plate (42) has two use states, in a first use state the sealing plate (42) seals the open end of the container (41); in a second use state The sealing plate (42) releases the seal on the open end of the container (41); the fire extinguishing ball (44) is arranged in the container (41); the locking member (43) has a first use state and a second use state. In the first use state, the locking member (43) simultaneously connects the container (41) and the sealing plate (42), and the sealing plate (42) is in the first use state; in the second use state, the locking member (43) releases the connection with the sealing plate (42), and the sealing plate (42) is in the second use state.

2. A performance detection device for a negative electrode-free sodium ion battery according to claim 1, characterized in that: The battery fixing member (3) comprises: A frame (31) is arranged on the bottom surface of the accommodation space; A power supply sheet (32) is disposed in the frame (32); the power supply sheet (32) is electrically connected to the energy supply component (2); A conductive wire (33) is disposed in the frame (31); A conductive sheet (34) is arranged in the frame (31); the conductive member (34) comprises a positive electrode sheet electrically connected to the positive electrode of the external electrical device and a negative electrode sheet electrically connected to the negative electrode of the external electrical device; A contact plate (35) is elastically connected to the frame (31); the contact plate (35) is provided with a positive electrode contact position and a negative electrode contact position for respectively electrically connecting to the positive and negative electrodes of the battery; A connecting shaft (36) rotatably connected to the contact plate (35); A first contact member (37) connected to the connecting shaft (36); the first contact member (37) is electrically connected to the positive electrode contact position; The second contact piece (38) is connected to the connecting shaft (36); the second contact piece (38) is electrically connected to the contact point with the negative electrode.

3. A performance detection device for a negative electrode-free sodium ion battery according to claim 2, characterized in that: The side surface of the frame (31) is provided with a first groove arranged along the height direction, and a first groove, a second groove, and a third groove arranged at intervals from top to bottom along the height direction and all connected to the first groove; the first groove is adapted to the first contact piece (37) and / or the second contact piece (38); the end point of the power-carrying sheet (32) is exposed on the end surface of the first groove; the end point of the conductive wire (33) is exposed on the end surface of the second groove; and the end point of the conductive sheet (34) is exposed on the end surface of the third groove.

4. A performance detection device for a negative electrode-free sodium ion battery as claimed in claim 3, characterized in that: The frame (31) is provided with a first sliding block adapted to the first groove; and / or The frame (31) is provided with a second sliding block adapted to the second groove; and / or The frame body (31) is provided with a third sliding block adapted to the third groove.

5. A performance detection device for a negative electrode-free sodium ion battery as claimed in claim 3, characterized in that: The locking piece (43) is a meltable sealing wax structure.

6. A performance detection device for a negative electrode-free sodium ion battery as claimed in claim 3, characterized in that: The locking member (43) comprises: A tension spring, one end of which is connected to the sealing plate (42) and the other end of which is provided with a connecting portion; A temperature sensor is arranged on the sealing plate (42); An electric clamping column structure is arranged on the container (41), and the electric clamping column structure is communicatively connected with the temperature sensor; When the temperature is higher than a preset value, the temperature sensor transmits a signal to the electric clamping column structure, and the electric clamping column is separated from the tension spring.

7. A performance detection device for a negative electrode-free sodium ion battery as claimed in claim 3, characterized in that: The puncture assembly (5) comprises: A driving motor (51) is arranged on the box body (12); A screw structure (52) is arranged on the box body (12), one end of the screw structure (52) extends into the box body (12), and the drive motor (51) can drive the screw structure (52) to move in an up-down direction; An elastic connecting piece (53) connected to one end of the screw structure (52) extending into the box body (12); A buffer head (54) is connected to an end of the elastic connecting member (53) away from the screw structure (52); a through hole is provided in the middle of the buffer head (54); One end of the piercing head (55) and one end of the screw structure (52) extend into the box body (12), and the piercing head (55) is adapted to the through hole.

8. A performance detection device for a negative electrode-free sodium ion battery according to claim 7, characterized in that: The buffer head (54) is a capsule structure, and the buffer head (54) is filled with inert gas.

9. A performance detection device for a negative electrode-free sodium ion battery according to claim 8, characterized in that: The transport component (6) comprises: A connecting plate (61) connected to the box body (12); A movable plate (62) is slidably connected to the connecting plate (61); A roller conveying structure (63) is arranged on the upper end surface of the movable plate (62); the roller conveying structure (63) is used to transport the battery to be tested to the contact plate (35).

10. A performance detection device for a negative electrode-free sodium ion battery according to any one of claims 1 to 9, characterized in that: The housing (1) comprises: A base (11) in which the energy supply component (2) is arranged; A box body (12) is arranged on the base (11); at least one of the left and right ends of the box body (12) is an open end; the open end is connected to the accommodating space; and the transport assembly (6) is arranged on one side of the open end; The side plate (13) is slidably connected to the opening end.

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