CN218102675U

CN218102675U - Charging and discharging assembly and charging and discharging device

Info

Publication number: CN218102675U
Application number: CN202222237499.0U
Authority: CN
Inventors: 李圣桃; 吕泽栋; 张男
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-12-20
Anticipated expiration: 2032-08-24

Abstract

The application provides a charge-discharge assembly and a charge-discharge device. The charge and discharge assembly includes: the charging and discharging part is provided with a first end, a second end and an accommodating space communicated with the first end and the second end, the accommodating space is used for accommodating a battery cell, and the charging and discharging part is used for charging and discharging the battery cell; and the temperature acquisition part is connected with the charging and discharging part, is positioned on one side of the second end, which deviates from the first end, and is used for acquiring the temperature of the battery cell. The application provides a replay electricity subassembly can improve charge and discharge efficiency and avoid stabbing the explosion-proof valve of electric core.

Description

Charging and discharging assembly and charging and discharging device

Technical Field

The application relates to the field of battery charging and discharging, in particular to a charging and discharging assembly and a charging and discharging device.

Background

At present, when the charge and discharge of electric core, the surface of charge and discharge probe butt electric core utmost point post is in order to carry out the charge and discharge for electric core usually, with temperature probe butt electric core top end face simultaneously to gather the temperature on electric core surface. However, currently, the charge and discharge efficiency of the battery cell is low and the temperature probe easily stabs the explosion-proof valve of the battery cell.

SUMMERY OF THE UTILITY MODEL

In a first aspect, an embodiment of the present application provides a charge and discharge assembly, including:

the charging and discharging part is provided with a first end, a second end and an accommodating space communicated with the first end and the second end, the accommodating space is used for accommodating a battery cell, and the charging and discharging part is used for charging and discharging the battery cell; and

the temperature acquisition part is connected with the charging and discharging part, is located on one side of the second end, which deviates from the first end, and is used for acquiring the temperature of the battery cell.

Wherein, the charge-discharge piece includes:

a first charge and discharge portion; and

a second charge and discharge portion;

the charging and discharging assembly has a first state and a second state, and the first charging and discharging part is separated from the second charging and discharging part in the first state; in the second state, the first charge-discharge part and the second charge-discharge part are connected to form the accommodating space so as to charge and discharge the battery cell.

Wherein, charge-discharge subassembly still includes:

the first elastic piece is connected with the temperature acquisition piece and the first charging and discharging part, and the first charging and discharging part can move relative to the temperature acquisition piece through the first elastic piece; and

the second elastic piece is connected with the temperature acquisition piece and the second charge and discharge part, and the second charge and discharge part can move relative to the temperature acquisition piece through the second elastic piece.

Wherein, the charge-discharge piece includes:

the charging and discharging body is provided with the accommodating space;

the contact parts are convexly arranged on the side wall of the accommodating space formed by the charge and discharge body and are used for abutting against the battery cell so as to charge and discharge the battery cell.

Wherein the radial circle diameter d of the contact portion satisfies: d is more than or equal to 4mm and less than or equal to 8mm.

Wherein, the contact part protrudes the charge and discharge body to form the height h of the side wall of the accommodating space, which satisfies: h is more than or equal to 2mm and less than or equal to 4mm.

Wherein, among the plurality of contact portions, all of the adjacently arranged two contact portions have equal or unequal distances therebetween.

Wherein, among the plurality of contact portions, a distance L between two adjacent contact portions satisfies: l is more than or equal to 4mm and less than or equal to 8mm.

The shape of the plurality of contact parts projected onto the side wall of the charging and discharging body forming the accommodating space comprises at least one of a circle, a triangle or a polygon.

In a second aspect, embodiments of the present application further provide a charging and discharging device, which includes the charging and discharging assembly according to the first aspect.

The embodiment of the application provides a charge and discharge assembly, charge and discharge assembly includes charge and discharge piece and temperature acquisition piece, charge and discharge piece is through acceping electric core to the butt the periphery lateral wall of electric core is in order right electric core carries out the charge and discharge, has improved charge and discharge piece in the contact surface of electric core makes charge and discharge piece with the contact of electric core is more abundant to make the distribution of electric current on electric core more even at the charge and discharge in-process, and then improved right the efficiency and the control accuracy of electric core charge and discharge. In addition, the temperature acquisition piece with charge and discharge spare is connected, just the temperature acquisition piece is located the second end of charge and discharge spare deviates from one side of first end can avoid the butt when charging and discharging the explosion-proof valve of electricity core to avoid stabbing the explosion-proof valve of electricity core. Consequently, the anti-explosion valve of electricity core can be improved and charge-discharge efficiency and avoid stabbing to the electricity component of replaying that this application embodiment provided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a charge and discharge assembly according to an embodiment of the present disclosure.

Fig. 2 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a schematic diagram of a battery cell accommodated in the charge and discharge assembly provided in the embodiment of fig. 2.

Fig. 4 is a schematic structural diagram of the charge and discharge assembly provided in the embodiment of fig. 1 in a first state.

Fig. 5 is a schematic structural diagram of the charge and discharge assembly provided in the embodiment of fig. 4 in a second state.

Fig. 6 is a schematic diagram of adding a battery cell in fig. 4.

Fig. 7 is a schematic diagram of the cell in fig. 5 added.

Fig. 8 isbase:Sub>A schematic cross-sectional view of the charge/discharge device of fig. 1 taken along linebase:Sub>A-base:Sub>A.

Fig. 9 is a partially enlarged schematic view at I in fig. 8.

Fig. 10 is a schematic structural diagram of a charge and discharge device according to an embodiment of the present application.

Reference numerals: a charge-discharge device 1; a charge and discharge assembly 10; a charging and discharging member 11; a first end 111; a second end 112; a housing space 113; a first charge and discharge portion 114; the second charge and discharge portion 115; a charge and discharge body 116; a contact portion 117; a temperature acquisition member 12; a first elastic member 13; a second elastic member 14; a tray 20; a press-fit assembly 30; and (5) an electric core 2.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present embodiment provides a charge and discharge assembly 10. Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a charge and discharge assembly according to an embodiment of the present disclosure; FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1; fig. 3 is a schematic diagram of a battery cell accommodated in the charge and discharge assembly according to the embodiment of fig. 2. In the present embodiment, the charge/discharge unit 10 includes a charge/discharge element 11 and a temperature acquisition element 12. The charging and discharging member 11 has a first end 111, a second end 112, and a receiving space 113 communicating the first end 111 and the second end 112. The accommodating space 113 is used for accommodating the battery cell 2. The charging and discharging piece 11 is used for charging and discharging the battery cell 2. The temperature acquisition part 12 is connected with the charging and discharging part 11, is located on one side of the second end 112 departing from the first end 111, and is used for acquiring the temperature of the battery cell 2.

In the present embodiment, the charge/discharge assembly 10 is configured to accommodate the battery cell 2 and perform a charge/discharge test on the battery cell 2. Generally, the charge and discharge assembly 10 is also referred to as a charge and discharge tool.

Specifically, the battery cell 2 is placed in the accommodating space 113 through the first end 111, and the charging and discharging member 11 accommodates the battery cell 2 and abuts against a peripheral side wall of the battery cell 2 for charging and discharging, where the peripheral side wall of the battery cell 2 is a positive electrode. The charge and discharge element 11 is also commonly referred to as a charge and discharge probe. Temperature acquisition member 12 is located second end 112 deviates from one side of first end 111, through the butt the terminal surface of electricity core 2 to gather the temperature of electricity core 2, thereby it is right electricity core 2 carries out temperature monitoring at the charge-discharge in-process. On one hand, whether the temperature of the battery cell 2 is normal in the charging and discharging process is monitored. On the other hand, the temperature change characteristic of the battery cell 2 in the charging and discharging process is monitored, so that a reference is provided for temperature management and control of the battery cell 2 in the charging and discharging process. The temperature acquisition member 12 is also referred to as a temperature probe.

Before the battery cell is loaded and applied, the battery cell needs to be subjected to charge and discharge tests so as to test parameters of the battery cell, such as capacity, internal resistance, voltage characteristics, multiplying power characteristics, temperature characteristics, cycle life, capacity density and the like. On one hand, whether the battery cell meets the design target or not is demonstrated through a charge and discharge test. On the other hand, the battery cell is managed and controlled through the charging and discharging test so as to realize better management and control on the battery cell when the battery cell is subsequently loaded and applied.

In the related art, a thimble tool is usually adopted to contact a battery cell for charging and discharging, and specifically, a charging and discharging probe is pushed against the surface of a battery cell pole and has a small contact surface with the battery cell, so that the charging and discharging efficiency of the battery cell is low. In addition, the charge-discharge probe charges and discharges for the electric core through pushing up on electric core utmost point post surface, and temperature probe contact electric core top terminal surface to be used for gathering electric core surface temperature. However, when the battery cell is charged and discharged, the temperature probe needs to apply pressure to the surface of the battery cell, and when the position of the temperature probe falls on the explosion-proof valve of the battery cell, the explosion-proof valve can be stabbed, so that the battery cell is scrapped.

Compared with the related art, in this embodiment, the charge and discharge member 11 has the accommodating space 113, and is configured to accommodate the battery cell 2 and abut against the peripheral side wall of the battery cell 2 to charge and discharge the battery cell 2, and compared with the related art, the charge and discharge member 11 is larger in contact surface with the battery cell 2, so that the charge and discharge member 11 is more in contact with the battery cell 2, and thus the distribution of current on the battery cell 2 in the charge and discharge process is more uniform, and further the charge and discharge efficiency and the control accuracy of the battery cell 2 are improved. In addition, the temperature collection part 12 replaces the position of a charge and discharge probe in the related art, and is arranged on one side of the second end 112 of the charge and discharge part 11, which is far away from the first end 111, that is, the temperature collection part 12 performs temperature collection by contacting the surface of the pole of the battery cell 2, so as to prevent the temperature collection part 12 from stabbing the explosion-proof valve of the battery cell 2. The charging and discharging member 11 is made of a conductive material, and the temperature collecting member 12 is a temperature sensor.

To sum up, this application embodiment provides a charge and discharge subassembly 10, charge and discharge subassembly 10 includes charge and discharge piece 11 and temperature acquisition 12, charge and discharge piece 11 is through acceping electric core 2 to the butt the periphery lateral wall of electric core 2 is with right electric core 2 carries out the charge and discharge, has improved charge and discharge piece 11 in the contact surface of electric core 2 makes charge and discharge piece 11 with the contact of electric core 2 is more abundant, thereby makes the distribution of electric current on electric core 2 more even at the charge-discharge in-process, and then has improved right the efficiency and the control accuracy of electric core 2 charges and discharges. In addition, temperature collection piece 12 with charge and discharge piece 11 is connected, just temperature collection piece 12 is located the second end 112 of charge and discharge piece 11 deviates from one side of first end 111, can avoid the butt when charging and discharging the explosion-proof valve of electricity core 2 to avoid stabbing the explosion-proof valve of electricity core 2. Therefore, the power regeneration assembly provided by the embodiment of the application can improve the charging and discharging efficiency and avoid stabbing the explosion-proof valve of the battery cell 2.

Referring to fig. 1, 4 and 5, fig. 4 is a schematic structural view of the charge/discharge assembly of the embodiment of fig. 1 in a first state; fig. 5 is a schematic structural diagram of the charge and discharge assembly provided in the embodiment of fig. 4 in a second state. In the present embodiment, the charge/discharge device 11 includes a first charge/discharge portion 114 and a second charge/discharge portion 115. The charging and discharging assembly 10 has a first state and a second state. In the first state, the first charge and discharge portion 114 is separated from the second charge and discharge portion 115. In the second state, the first charge-discharge portion 114 is connected to the second charge-discharge portion 115 to form the accommodating space 113, so as to charge and discharge the battery cell 2.

In the present embodiment, the charge/discharge assembly 10 has two states, specifically, a first state and a second state. In the first state, the charge/discharge assembly 10 is not operated, and the first charge/discharge portion 114 is separated from the second charge/discharge portion 115. When the battery cell 2 needs to be charged and discharged, the charging and discharging assembly 10 is switched to the second state through the first state, that is, the first charging and discharging part 114 and the second charging and discharging part 115 are separated and converted into a combined connection, so as to form the accommodating space 113 for accommodating the battery cell 2, so that the charging and discharging member 11 abuts against the peripheral side wall of the battery cell 2, so as to charge and discharge the battery cell 2.

The above description is only a schematic description of the scene in which the charge/discharge unit 10 is in the first state and the second state, and the state of the charge/discharge unit 10 is not limited. In another embodiment, when the outer diameter of the cell 2 is larger than the inner diameter of the housing space 113, the first charge/discharge unit 114 and the second charge/discharge unit 115 are separated when the charge/discharge member 11 abuts against the outer peripheral side wall of the cell 2, but since both the first charge/discharge unit 114 and the second charge/discharge unit 115 abut against the outer peripheral side wall of the cell 2, the cell 2 can be charged/discharged. Therefore, the charge and discharge assembly 10 can be applied to charge and discharge various specifications of the battery cells 2, and can be applied to various structures of the positive electrodes of the battery cells 2.

Referring to fig. 1, fig. 3, fig. 6 and fig. 7, fig. 6 is a schematic diagram of adding cells in fig. 4; fig. 7 is a schematic diagram of adding cells in fig. 5. In this embodiment, the charge/discharge assembly 10 further includes a first elastic member 13 and a second elastic member 14. The first elastic member 13 is connected to the temperature collecting member 12 and the first charge/discharge portion 114. The first charge and discharge portion 114 is movable relative to the temperature acquisition member 12 by the first elastic member 13. The second elastic member 14 is connected to the temperature collecting member 12 and the second charge and discharge portion 115. The second charge and discharge portion 115 is movable relative to the temperature acquisition member 12 by the second elastic member 14.

The first elastic member 13 may be, but is not limited to, a spring, rubber, or the like, and the second elastic member 14 may be, but is not limited to, a spring, rubber, or the like.

The following description will be made schematically in conjunction with a process in which the battery cell 2 is put into and taken out of the accommodating space 113 of the charge and discharge member 11.

When the battery cell 2 is not placed in the receiving space 113 of the charging and discharging member 11, the charging and discharging assembly 10 is in the first state, and the first charging and discharging portion 114 is separated from the second charging and discharging portion 115.

When a downward pressure applied to the battery cell 2 towards the temperature acquisition member 12 abuts against the temperature acquisition member 12 and is continuously pressed down, the temperature acquisition member 12 pulls the first charge and discharge part 114 to move towards the second charge and discharge part 115 through the first elastic member 13, and the temperature acquisition member 12 pulls the second charge and discharge part 115 to move towards the first charge and discharge part 114 through the second elastic member 14.

When the battery cell 2 is pressed down to a preset station, the charge and discharge assembly 10 is in the second state, the pole of the battery cell 2 abuts against the temperature acquisition part 12, the first charge and discharge part 114 is connected with the second charge and discharge part 115 to form the accommodating space 113 so as to accommodate the battery cell 2, and the charge and discharge part 11 abuts against the peripheral side wall of the battery cell 2. At this time, the ratio of the dimension of the charge and discharge element 11 in the direction in which the temperature acquisition element 12 points to the battery cell 2 to the dimension of the battery cell 2 in the direction in which the temperature acquisition element 12 points to the battery cell 2 is 1/3 to 2/3, so that the charge and discharge element 11 has high charge and discharge efficiency. For example, the ratio of the dimension of the charge and discharge member 11 in the direction in which the temperature collection member 12 points to the battery cell 2 to the dimension of the battery cell 2 in the direction in which the temperature collection member 12 points to the battery cell 2 is 1/3, or 5/12, or 1/2, or 7/12, or 2/3, etc.

When the downward pressure applied to the battery cell 2 is removed, the first elastic member 13 and the second elastic member 14 pull the temperature acquisition member 12 to move towards the direction of the battery cell 2 due to the elastic restoring force, push the first charge and discharge part 114 to move towards the direction deviating from the second charge and discharge part 115, and push the second charge and discharge part 115 to move towards the direction deviating from the first charge and discharge part 114, so that the charge and discharge member 11 is separated from the contact with the battery cell 2, and at this time, the battery cell 2 can be taken out. After the battery cell 2 is taken out, the first elastic element 13 and the second elastic element 14 are completely recovered, and the charge and discharge assembly 10 is recovered to the first state.

Referring to fig. 1, 3, 8 and 9, fig. 8 isbase:Sub>A cross-sectional view of the charging and discharging device of fig. 1 alongbase:Sub>A linebase:Sub>A-base:Sub>A; fig. 9 is a partially enlarged schematic view at I in fig. 8. In the present embodiment, the charge/discharge element 11 includes a charge/discharge body 116 and a plurality of contact portions 117. The charging and discharging body 116 has an accommodating space 113. The plurality of contact portions 117 are protruded from a sidewall of the charge and discharge body 116 forming the accommodating space 113, and are configured to abut against the battery cell 2, so as to charge and discharge the battery cell 2.

In the present embodiment, the plurality of contact portions 117 are provided to protrude from the charge/discharge body 116, and when the cell 2 is accommodated in the charge/discharge element 11, the plurality of contact portions 117 abut against the cell 2 to charge/discharge the cell 2. The plurality of contact portions 117 can improve the contact efficiency between the charge/discharge element 11 and the battery cell 2, and can improve the degree of adhesion between the charge/discharge element 11 and the battery cell 2.

Wherein the radial circular diameter d of the contact portion 117 satisfies: d is not less than 4mm and not more than 8mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency. For example, the radial circle diameter d =4mm, or d =5mm, or d =6mm, or d =7mm, or d =8mm, or the like, of the contact portion 117.

The diameter of the radial circle of the contact portion 117 is a diameter of a circumscribed circle of an orthogonal projection of the contact portion 117 on the sidewall of the charging and discharging member 11 forming the receiving space 113. When the radial circular diameter d of the contact portion 117 is less than 4mm, the contact portion 117 easily sticks to the battery cell 2 due to an excessively large pressure applied to the battery cell 2 due to an excessively small contact surface with the battery cell 2. When the diameter d of the radial circle of the contact portion 117 is greater than 8mm, the contact portion 117 is easily attached to the battery cell 2 insufficiently due to an excessively large area of an end surface of the contact portion 117 away from the charge/discharge body 116, thereby affecting the charge/discharge of the battery cell 2. Therefore, in the present embodiment, the radial circle diameter d of the contact portion 117 satisfies: d is not less than 4mm and not more than 8mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency.

Further, a height h of a sidewall of the receiving space 113 formed by the contact portion 117 protruding from the charge and discharge body 116 satisfies: h is more than or equal to 2mm and less than or equal to 4mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency. For example, the height h =2mm, h =2.2mm, h =2.4mm, h =2.6mm, h =2.8mm, h =3mm, h =3.2mm, h =3.4mm, h =3.6mm, h =3.8mm, or h =4mm, and the like of the side wall of the receiving space 113 formed by the contact portion 117 protruding from the charge and discharge body 116.

When the height h of the contact part 117 protruding from the sidewall of the accommodating space 113 formed by the charge and discharge body 116 is less than 2mm, the size of the contact part 117 protruding from the sidewall of the accommodating space 113 formed by the charge and discharge body 116 is insufficient, so that the adhesion between the contact part 117 and the battery cell 2 is insufficient. When the height h of the sidewall of the receiving space 113 formed by the contact portion 117 protruding the charge and discharge body 116 is greater than 4mm, the contact portion 117 occupies an excessive space of the receiving space 113, thereby reducing the space utilization rate of the charge and discharge member 11. Therefore, in the present embodiment, the height h of the side wall of the housing space 113 formed by the contact portion 117 protruding from the charge and discharge body 116 satisfies: h is more than or equal to 2mm and less than or equal to 4mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency.

Further, of the plurality of contact portions 117, the distance between the two adjacent contact portions 117 is equal or unequal. And in the plurality of contact portions 117, a distance L between two adjacent contact portions 117 satisfies: l is not less than 4mm and not more than 8mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency and the manufacturing cost is proper. For example, the distance L =4mm, or L =5mm, or L =6mm, or L =7mm, or L =8mm, or the like, between two adjacent contact portions 117.

Here, the distance L between two adjacent contact portions 117 is a minimum distance between outer contours of orthogonal projections of the two adjacent contact portions 117 on the side wall of the charge/discharge body 116 forming the receiving space 113. When the distance L between two adjacent contact portions 117 is less than 4mm, the plurality of contact portions 117 are arranged too densely, so that the manufacturing cost of the charge and discharge device 11 is too high. When the distance L between two adjacent contact portions 117 is greater than 8mm, contact points between the charge and discharge member 11 and the battery cell 2 are too sparse, so that the contact efficiency between the charge and discharge member 11 and the battery cell 2 is low. Therefore, in the present embodiment, among the plurality of contact portions 117, the distance L between two adjacent contact portions 117 satisfies: l is not less than 4mm and not more than 8mm, so that the charging and discharging piece 11 and the battery cell 2 have higher contact efficiency and the manufacturing cost is proper.

In addition, the shape of the contact portions 117 projected on the sidewall of the charge and discharge body 116 forming the receiving space 113 includes at least one of a circle, a triangle, or a polygon. It should be noted that fig. 8 illustrates a shape of the plurality of contact portions 117 projected onto the side wall of the charge and discharge body 116 forming the receiving space 113 as a circle, and it is understood that fig. 8 does not limit a shape of the plurality of contact portions 117 projected onto the side wall of the charge and discharge body 116 forming the receiving space 113 in the embodiment of the present application.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a charging and discharging device according to an embodiment of the present disclosure. In the present embodiment, the charge/discharge device 1 includes the charge/discharge assembly 10 according to any one of the above embodiments.

In the present embodiment, the charge/discharge device 1 is used to perform a charge/discharge test on the battery cell 2. The charging and discharging device 1 comprises at least one charging and discharging assembly 10. The charging and discharging device 1 further comprises a tray 20 and a pressing component 30. The tray 20 is used for carrying at least one charging and discharging assembly 10. The press fit assembly 30 is configured to apply a downward pressure to the battery cell 2, so as to press the battery cell 2 into the charge and discharge assembly 10, so as to charge and discharge the battery cell 2.

The above is a schematic description of the structure of the charge and discharge device 1, and the structural composition of the charge and discharge device 1 provided in the present application is not limited.

Although embodiments of the present application have been shown and described, it should be understood that they have been presented by way of example only, and not limitation, and that various changes, modifications, substitutions and alterations can be made by those skilled in the art without departing from the scope of the present application, and such improvements and modifications are to be considered as within the scope of the present application.

Claims

1. A charging and discharging assembly, comprising:

the charging and discharging part is provided with a first end, a second end and an accommodating space for communicating the first end with the second end, the accommodating space is used for accommodating a battery cell, and the charging and discharging part is used for charging and discharging the battery cell; and

2. The charge and discharge assembly of claim 1, wherein the charge and discharge member comprises:

a first charge and discharge portion; and

a second charge and discharge portion;

the charge and discharge assembly has a first state and a second state, and the first charge and discharge part is separated from the second charge and discharge part in the first state; in the second state, the first charge-discharge part and the second charge-discharge part are connected to form the accommodating space so as to charge and discharge the battery cell.

3. The charge and discharge assembly of claim 2, further comprising:

the first charging and discharging part can move relative to the temperature acquisition part through the first elastic part; and

4. A charging and discharging assembly as claimed in any of claims 1 to 3, wherein the charging and discharging member comprises:

the charging and discharging body is provided with the accommodating space;

5. The charge and discharge assembly according to claim 4, wherein the radial circular diameter d of the contact portion satisfies: d is more than or equal to 4mm and less than or equal to 8mm.

6. The charge and discharge assembly according to claim 5, wherein a height h of the contact portion protruding from the side wall of the charge and discharge body forming the receiving space satisfies: h is more than or equal to 2mm and less than or equal to 4mm.

7. The charge and discharge assembly according to claim 6, wherein distances between all adjacently disposed two of the plurality of contact portions are equal or different.

8. The charge and discharge assembly according to claim 7, wherein a distance L between two adjacent contact portions among the plurality of contact portions satisfies: l is more than or equal to 4mm and less than or equal to 8mm.

9. The charge and discharge assembly according to any one of claims 5 to 8, wherein a shape of the plurality of contact portions projected onto the side wall of the charge and discharge body forming the receiving space includes at least one of a circle, a triangle, or a polygon.

10. A charging and discharging device comprising the charging and discharging assembly according to any one of claims 1 to 9.