A lithium battery baking device

Abstract

The present application provides a lithium battery baking device, including a fixed frame and a clamp, the clamp includes a heating plate and a conductive plate provided with a plurality of electrical contacts, the heating plate is electrically connected with the conductive plate, by making the clamp slidingly arranged on the fixed frame, and setting a swing structure including a swing element and a rotary body and the swing element can change in a preset angle range relative to the rotary body, the rotary body is arranged on the fixed frame and the probe assembly is arranged on the swing element, in the process that the clamp approaches the swing structure until the clamp stops moving relative to the swing structure, the electrical contacts on the conductive plate and the probe end of the probe assembly arranged on the swing element can be continuously in dynamic contact and gradually adjusted to the state of face-to-face contact. The present application can eliminate the poor contact problem of the probe and the electrical contact or improve the stability of the electrical connection between the two, thereby eliminating the potential safety hazard that the electrical contact is burned out due to vacuum discharge caused by poor contact between the two.

Description

Technical Field

[0001] This invention generally relates to the field of lithium battery technology. More specifically, this invention relates to a lithium battery baking apparatus. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as positive / negative electrode materials and a non-aqueous electrolyte solution. They have advantages such as high energy density, long cycle life, and low self-discharge rate. In China, lithium-ion battery technology is mainly used in the new energy vehicle industry and the energy storage industry.

[0003] Baking is an essential step in the lithium battery manufacturing process. Since the electrolyte in lithium batteries is anhydrous organic matter, the presence of water is extremely harmful to the battery, easily causing overheating and explosion. Therefore, lithium batteries must undergo vacuum baking to remove moisture before pre-sealing. Common baking methods involve placing the lithium batteries on a tray and then placing the tray into an oven. Another method uses contact clamps to hold the lithium batteries, and then heating the clamping plates to bake them.

[0004] CN205718340U provides a contact-type battery heating clamp, which heats the battery by aligning its heating plate with and electrically connecting the electrical contacts of a PCB board to control the heat during the battery heating process. However, the relative positions of the heating plates change constantly during the adjustment of the spacing between them. Furthermore, the spacing between the heating plates varies depending on the battery specifications being heated, making it impossible to ensure consistent positioning of the electrical contacts between the heating plates and the PCB board during each heating process. This can easily lead to poor contact between the PCB board's electrical contacts and the heating plate after the battery is clamped, resulting in electrical connection failure. It can even cause vacuum discharge, burning out the electrical contacts and leading to safety accidents.

[0005] In view of this, there is an urgent need to provide a lithium battery baking fixture to solve the problem of electrical connection failure or even electrical contact burnout caused by poor contact with electrical contacts, which can lead to safety accidents. Summary of the Invention

[0006] To address at least one or more of the technical problems mentioned in the background section, this invention proposes a lithium battery baking apparatus. This apparatus allows a probe assembly to dynamically contact electrical contacts disposed on a conductive plate. During this contact process, the angle between the probe end face and the electrical contact is adjusted by the oscillation of a swinging member relative to a rotating body. This ensures that the probe end face makes surface-to-surface contact with the electrical contact, facilitating rapid electrical connection between the probe assembly and the conductive plate and maintaining good surface-to-surface electrical connection during the baking process. Therefore, this invention provides the following technical solution.

[0007] This invention discloses a lithium battery baking device, comprising: a fixed frame and a clamp slidably disposed on the fixed frame. The clamp includes a heating plate for baking the lithium battery and a conductive plate having multiple electrical contacts. The heating plate is electrically connected to the conductive plate. When the clamp slides relative to the fixed frame, the electrical contacts are used to contact a probe assembly. The device also includes a swing structure, which includes a rotating body and a swing member having a through cavity. The rotating body is disposed on the fixed frame, and the probe assembly is disposed on the swing member. The rotating body is at least partially located within the through cavity of the swing member. The movement of the swing member relative to the rotating body is configured such that: any straight line located in the plane containing any generatrix and center line of the rotating body and simultaneously located on the swing member has a first angle with the center line of the rotating body. The variation value of the first angle is within a preset range. The inner wall of the through cavity of the swing member does not contact the rotation surface of the rotating body.

[0008] Preferably, the oscillating member includes a plurality of tubular cavities, with at least two tubular cavities sequentially arranged along a straight line parallel to the generatrix of the rotating body on the oscillating member; an array of tubular cavities is included in the segment of the oscillating member where any of the at least two tubular cavities is located along the axial orthogonal projection direction of the rotating body, the array of tubular cavities including at least three tubular cavities arranged centrally symmetrically about the center line of the rotating body; a ball is provided at the opening of each tubular cavity, and a first rebound member is provided in each tubular cavity to act on the ball to give it a tendency to move toward the opening, the ball is used to contact the rotating body, so that the oscillating member can have a degree of freedom to oscillate relative to the rotating body within the preset range, supported by the contact point between the ball and the rotating body.

[0009] Preferably, the device further includes a second spring-loaded component, which connects the fixed frame and the rotating body so that the rotating body can have a degree of freedom to swing relative to the fixed frame within a preset range with the connection point between the second spring-loaded component and the fixed frame as a reference.

[0010] Preferably, the preset range of the first included angle change value is between -5° and 5°, and the range of the cone angle formed by the second rebound member swinging within the preset range is between 0° and 5°.

[0011] Preferably, the first spring-loaded member undergoes elastic deformation before the second spring-loaded member.

[0012] Preferably, the rotating body is a cylinder.

[0013] Preferably, three or four tubular cavities are sequentially arranged on the swing member along the same straight line parallel to the generatrix of the cylinder. The diameter of the ball bearings in the middle one or two tubular cavities is larger than the diameter of the ball bearings in the tubular cavities on both sides. When the angle of the swing member relative to the cylinder changes, the ball bearings in the middle tubular cavity support the swing member, while the ball bearings in the tubular cavities on both sides adjust the change of the first included angle. The cylinder is located at least on the projection length segment of the center line of the penetrating cavity of the swing member where the three or four tubular cavities sequentially arranged along the direction parallel to its generatrix are located.

[0014] Preferably, the two ends of the through-cavity of the swing member are provided with chamfered edges, and the radius of the chamfered edges is smaller than the shortest distance from the two ends of the through-cavity to the inner side of the nearest tubular cavity.

[0015] Preferably, the swing structure has multiple sets of swing members for fixing the probe assembly, and the multiple sets of swing members are arranged such that when the clamp slides relative to the fixed frame to bring the electrical contact closer to the probe assembly, the electrical contact dynamically contacts the probe assembly until the electrical contact makes face-to-face contact with the end face of the probe.

[0016] Preferably, the device further includes: a first elastic connector and a second elastic connector, wherein the first elastic connector is used to connect the fixed frame to the side of the swing member where the probe assembly is provided, and the second elastic connector is used to connect the fixed frame to the other side of the swing member opposite to the side where the probe assembly is provided.

[0017] The technical solution provided in this application may include the following beneficial effects:

[0018] By utilizing the apparatus described above and in several embodiments of the present invention, the present invention allows a lithium battery clamp to be slidably mounted on a fixed frame, and includes a swinging structure comprising a swinging member and a rotating body, wherein the swinging member can change relative to the rotating body within a preset angle range. As the clamp approaches the swinging structure until it stops moving relative to the swinging structure, the electrical contacts on the conductive plate and the probe tip of the probe assembly mounted on the swinging member are continuously in dynamic contact and gradually adjusted to a surface-to-surface contact state. The present invention not only solves the defects of the solutions in the prior art, but also solves the problem of the probe tip and electrical contacts not being in surface-to-surface contact due to factors such as component processing precision, welding deformation or assembly errors, vacuum failure of the cavity, and other deformations caused by use. It eliminates the problem of poor contact between the probe and electrical contacts or improves the stability of their electrical connection at a low cost without incurring high costs, such as improving component processing precision. This eliminates the potential safety hazard of the electrical contacts being burned out due to vacuum discharge caused by poor contact.

[0019] In some embodiments, the present invention can further combine the swinging of the rotating body relative to the fixed frame with the swinging of the swinging component relative to the rotating body to form a multi-level adjustment structure. This is beneficial to improve the flexibility of the entire swinging structure, reduce the difficulty of the probe tip and the electrical contact surface to surface, and further improve the surface contact effect between the probe tip and the electrical contact, thereby further improving the reliability and stability of the electrical connection between the electrical contact and the probe tip. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts wherein:

[0021] Figure 1 This is a schematic diagram showing the relative positions of the swing structure and the clamp in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram showing the conductive plate arrangement in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram showing the relative positions of the swing member, the first elastic connector, and the second elastic connector in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram illustrating a centrally symmetrical distribution of the tubular cavity array in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram showing the tubular cavity arranged along the generatrix of the rotating body in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram showing the clamp in a locked state by the locking part in one embodiment of the present invention;

[0027] Explanation of reference numerals in the attached drawings: 100, lithium battery; 1, fixed frame; 2, clamp; 3, conductive plate; 31, electrical contact; 4, probe assembly; 5, swinging component; 50, rotating body; 51, tubular cavity; 61, first elastic connector; 62, second elastic connector; 7, locking part. Detailed Implementation

[0028] Embodiments will now be described with reference to the accompanying drawings. It should be understood that, for the sake of simplicity and clarity, reference numerals may be repeated in the drawings to indicate corresponding or similar elements where deemed appropriate. Furthermore, numerous specific details are set forth in this invention to provide a thorough understanding of the embodiments described herein. However, those skilled in the art will understand that the embodiments described herein can be practiced without these specific details. In other instances, well-known methods, processes, and components have not been described in detail so as not to obscure the embodiments described herein. Moreover, this description should not be construed as limiting the scope of the embodiments described herein.

[0029] According to one embodiment of the present invention, a lithium battery baking apparatus is provided. (Reference) Figures 1 to 6 The baking device may include a fixed frame 1, a clamp 2 slidably disposed on the fixed frame 1, and a swing structure. The clamp 2 includes a heating plate for baking the lithium battery 100 and a conductive plate 3 with multiple electrical contacts 31. The heating plate and the conductive plate 3 are electrically connected. When the clamp 2 slides relative to the fixed frame 1, the electrical contacts 31 are used to contact the probe assembly 4. The swing structure includes a rotating body 50 and a swing member 5 with a through cavity. The rotating body 50 is disposed on the fixed frame 1, and the probe assembly 4 is disposed on the swing member 5. The rotating body 50 is at least partially located in the through cavity of the swing member 5. The movement of the swing member 5 relative to the rotating body 50 is configured such that: any straight line located in the plane containing any generatrix and the center line of the rotating body 50 and simultaneously located on the swing member 5 has a first angle with the center line of the rotating body 50. The variation value of the first angle is within a preset range. The inner wall of the through cavity of the swing member 5 does not contact the rotating surface of the rotating body 50.

[0030] Regarding the heating plate of clamp 2 mentioned above, it can be located below clamp 2, while the conductive plate 3 can be positioned on the side of clamp 2 near the swinging component 5 of the swinging structure, such as... Figure 2 As shown, the electrical connection between the heating plate and the conductive plate 3 can be achieved by setting up high-voltage and low-voltage circuits. It is understood that the relative positions of the heating plate and the conductive plate 3 do not change; the heating of the lithium battery by the heating plate is achieved through the electrical connection between the conductive plate 3 and the probe assembly 4.

[0031] Regarding the electrical contacts 31 on the conductive plate 3, their material can be copper or other metals with good conductivity. A thin gold plating layer can also be provided on the outer surface of the electrical contacts 31. The specific type of metal and plating layer are not limited here, and those skilled in the art can make reasonable choices according to actual needs.

[0032] Furthermore, the following embodiments illustrate the process of realizing the relative motion between the oscillating member 5 and the rotating body 50. In this embodiment, reference is made to... Figures 3 to 5The oscillating member 5 includes multiple tubular cavities 51. At least two tubular cavities 51 are sequentially arranged on the same straight line parallel to the generatrix of the rotating body 50. A tubular cavity array is included in the segment of the oscillating member 5 where any of the tubular cavities 51 is located along the axial orthogonal projection direction of the rotating body 50. The tubular cavity array includes at least three tubular cavities 51 arranged centrally symmetrically about the center line of the rotating body 50. A ball is provided at the opening of each tubular cavity 51. A first spring member is provided in each tubular cavity 51 to act on the ball so that it has a tendency to move toward the opening. The ball is used to contact the rotating body 50 so that the oscillating member 5 can have a degree of freedom to oscillate relative to the rotating body 50 within a preset range, supported by the contact point between the ball and the rotating body 50.

[0033] Accordingly, the rotating body 50 mentioned above can be a cylinder, and the swinging member 5 can be a structure with a through cavity whose inner diameter is larger than the outer diameter of the cylinder. At the same time, according to the above description, it can be understood that a tubular cavity 51 is provided in both the axial and radial directions of the swinging member 5. Since the ball at the opening of the tubular cavity 51 is used to contact the rotating body 50, the direction of the first spring member in the tubular cavity 51 toward the ball is at least approximately in the direction of the center line of the rotating body 50, or directly in the direction of the center line of the rotating body 50.

[0034] refer to Figure 4 As shown, the tubular cavity array mentioned above is located within a specific segment of the swing member 5 along the axial orthogonal projection direction of the rotating body 50. This specific segment covers at least one of at least two tubular cavities 51 arranged sequentially along the same straight line parallel to the generatrix of the rotating body 50. The tubular cavities 51 within the segment of the swing member 5 are arranged centrally symmetrically about the center line of the rotating body 50 and have at least three tubular cavities 51. Figure 4 The diagram shows six tubular cavities 51 within the segment, but this does not imply a specific limitation on the number of tubular cavities 51 within this particular segment. The number of tubular cavities 51 within this particular segment can also be four or five, as long as they are centrally symmetrically arranged about the center line of the rotating body 50. Clearly, such an arrangement helps to ensure that the oscillating member 5 coincides with the center line of the rotating body 50.

[0035] Returning to the above embodiment, the ball can be held at the opening of the tubular cavity 51 by providing a first spring member inside the tubular cavity 51. The first spring member can be a spring in a compressed state. The diameter of the ball is selected so as not to detach from the opening of the tubular cavity 51. The diameter of the ball is slightly larger than the diameter of the opening of the tubular cavity 51 so that the ball can be exposed and used to contact the rotating body 50. The ball mentioned in this embodiment and below can be steel balls. Since at least two tubular cavities 51 are arranged sequentially along the same straight line parallel to the generatrix of the rotating body 50, the presence of the ball at the opening of at least two tubular cavity 51 can prevent the inner wall of the penetrating cavity of the swing member 5 from contacting the rotating surface of the rotating body 50. When the swing member 5 moves relative to the rotating body 50, the contact point between the ball and the rotating body 50 can be used as support to make the swing member 5 swing relative to the rotating body 50. The amplitude of the swing of the swinging member 5 relative to the rotating body 50 can be measured by the range of variation of the first included angle value. Those skilled in the art can adjust the preset range by designing parameters such as the inner diameter and opening diameter of the tubular cavity 51, the diameter of the ball bearing, and the gap between the penetrating cavity of the swinging member 5 and the rotating body 50, according to actual needs.

[0036] In one embodiment, the lithium battery baking apparatus further includes a second spring-loaded member, which connects the fixed frame 1 and the rotating body 50, allowing the rotating body 50 to have a degree of freedom relative to the fixed frame 1, swinging within a preset range with the connection point between the second spring-loaded member and the fixed frame 1 as a reference. It is understood that the preset range is the space swept by the entire structure of the second spring-loaded member and the rotating body 50 with the connection point between the second spring-loaded member and the fixed frame 1 as a reference; therefore, this space is a cone.

[0037] Obviously, in the above embodiment, the lithium battery baking device includes a two-stage adjustment structure for the angle of the probe tip of the probe assembly 4. Each stage adjusts a certain angle, which helps to improve the flexibility of the entire swing structure and reduce the difficulty of the probe assembly 4 and the electrical contact 31 making face-to-face contact.

[0038] Optionally, the preset range of the first included angle change value is between -5° and 5°, and the range of the cone angle formed by the swing of the second spring component within the preset range is between 0° and 5°. According to the actual production situation, the actual deviation angle between the probe tip of the probe assembly 4 and the electrical contact 31, which is not in full contact due to assembly errors and deformation of the fixed frame 1, is usually small. The maximum value of the deviation angle measurement does not exceed 10° and most deviation values ​​are within 5°. Therefore, by setting a two-stage adjustment structure for the probe tip angle, each stage of the adjustment structure can adjust a certain deviation of not being in full contact. When each stage of the adjustment structure changes within the above-mentioned angle range, the probe tip on the swing component 5 can be in full contact with the electrical contact 31 on the conductive plate 3, which well meets the actual production needs.

[0039] Optionally, the first spring-loaded component undergoes elastic deformation before the second spring-loaded component. Specifically, the order of elastic deformation can be achieved by giving the two spring-loaded components different elasticities. For example, the first spring-loaded component can be a softer spring, while the second spring-loaded component can be a spring that is less prone to elastic deformation or is relatively stiffer than the first spring-loaded component.

[0040] As mentioned above, the first spring-loaded component undergoes elastic deformation before the second spring-loaded component. When the clamp 2 approaches the swing structure and makes the probe assembly 4 dynamically contact the conductive plate 3, the swing component 5 swings relative to the rotating body 50 first. The first included angle changes first and adjusts the contact process between the probe assembly 4 and the electrical contact 31 to meet the surface contact requirements. At this time, the first spring-loaded component in each tubular cavity 51 undergoes different degrees of deformation. If the surface contact between the probe assembly 4 and the electrical contact 31 is still not met when the swing range of the swing component 5 exceeds 5°, then the second spring-loaded component undergoes elastic deformation, which causes the rotating body 50 to swing relative to the fixed frame 1. The rotating body 50 will also generate a certain angle during the swing process relative to the fixed frame 1, which can then adjust the state that the first-level adjustment structure failed to adjust to the surface contact state again. That is, a second-level adjustment is carried out on the basis of the first-level adjustment to make the contact between the probe end and the electrical contact 31 meet the surface contact requirements.

[0041] In another embodiment, the rotating body 50 is a cylinder, and three or four tubular cavities 51 are sequentially arranged on the same straight line parallel to the generatrix of the cylinder on the swing member 5. The diameter of the ball bearings in the middle one or two tubular cavities 51 is larger than the diameter of the ball bearings in the tubular cavities 51 on both sides. When the angle of the swing member 5 relative to the cylinder changes, the ball bearings in the middle tubular cavity 51 are used to support the swing member 5, while the ball bearings in the tubular cavities 51 on both sides are used to adjust the change of the first included angle. The cylinder is located at least on the projection length of the center line of the through cavity of the swing member 5 where the three or four tubular cavities 51 are sequentially arranged along the direction parallel to its generatrix.

[0042] As described in the previous embodiments, at least two tubular cavities 51 are sequentially arranged along the same straight line parallel to the generatrix of the rotating body 50. In the above embodiments, three or four tubular cavities 51 are provided, and the diameter of the ball bearings in the middle one or two tubular cavities 51 is larger than the diameter of the ball bearings in the tubular cavities 51 on both sides. Figure 5 The diagram shows three tubular cavities 51 arranged sequentially on the same straight line parallel to the generatrix of the cylinder. The ball bearings located in the gap between the swing member 5 and the cylinder and on the same straight line parallel to the generatrix of the cylinder have a design that is larger in the middle and smaller on both sides, so that the change of the first included angle is more flexible. When the swing member 5 swings relative to the rotating body 50 or the cylinder, the adaptability of the swing structure is better, and thus the contact effect between the probe tip and the electrical contact 31 is better adjusted.

[0043] Furthermore, the two ends of the through-cavity openings of the swing member 5 are provided with chamfered edges, the radius of which is smaller than the shortest distance from the two ends of the through-cavity openings to the inner side of the nearest tubular cavity 51. Designing chamfered edges at the two ends of the through-cavity openings of the swing member 5 obviously improves the adaptability of the swing structure, allowing the swing member 5 to swing more effectively relative to the rotating body 50. For example, it can prevent interference between the two ends of the through-cavity openings of the swing member 5 and the outer surface of the rotating body 50. At the same time, the radius of this chamfer should not be too large; it must be at least smaller than the shortest distance from the two ends of the through-cavity openings to the inner side of the nearest tubular cavity 51.

[0044] To further improve the adaptability of the swing structure and enable the probe tip of the probe assembly 4 to quickly achieve surface-to-surface contact with the electrical contacts 31 on the conductive plate 3, the swing structure can have multiple sets of swing members 5 for fixing the probe assembly 4. The multiple sets of swing members 5 are arranged such that when the clamp 2 slides relative to the fixed frame 1 to bring the electrical contacts 31 closer to the probe assembly 4, the electrical contacts 31 dynamically contact the probe assembly 4 until the electrical contacts 31 and the probe tip make surface-to-surface contact. In this embodiment, multiple sets of rotating bodies 50 are still required to form multiple swing structures with the multiple sets of swing members 5 and to fix multiple sets of probe assemblies 4. The multiple sets of probe assemblies 4 correspond to all the electrical contacts 31 on the conductive plate 3. The arrangement of the multiple sets of swing members 5 and the multiple sets of rotating bodies 50 is described in the previous embodiments and will not be repeated here.

[0045] Further, refer to Figure 3 As shown, the baking device may further include: a first elastic connector 61 and a second elastic connector 62. The first elastic connector 61 is used to connect the fixed frame 1 to the side of the swing member 5 where the probe assembly 4 is located, and the second elastic connector 62 is used to connect the fixed frame 1 to the other side of the swing member 5 opposite to the side where the probe assembly 4 is located. Specifically, a T-shaped bracket can be provided on the fixed frame 1, and the T-shaped bracket can be horizontally fixed to the fixed frame 1 to limit the left and right movement of the swing member 5. The first elastic connector 61 is located between the inner side of the T-shaped bracket and the side of the swing member 5 where the probe assembly 4 is located, and the second elastic connector 62 is located between the other side of the swing member 5 opposite to the side where the probe assembly 4 is located and the fixed frame 1. In this embodiment, both elastic connectors can be springs. The function of setting them is to maintain the initial state of the swing structure and the electrical connection state between the electrical contact 31 and the probe assembly 4, and also to prevent rigid contact between the swing member 5 and the fixed frame 1 during the adjustment of the dynamic contact between the electrical contact 31 and the probe assembly 4. It should be noted that when the electrical contact 31 and the probe assembly 4 are in a surface-to-surface electrical connection state, according to the specific arrangement of the first elastic connector 61 and the second elastic connector 61, it can be understood that the second elastic connector 62 is in a compressed state, while the first elastic connector 61 can be in a stretched state or a state without deformation.

[0046] In the embodiments described above, in order to maintain face-to-face contact between the electrical contacts 31 of the conductive plate 3 on the clamp 2 and the probe assembly 4 on the swing member 5 during dynamic adjustment, a locking part 7 can be provided on the fixed frame 1 to lock the clamp 2 at an appropriate position when it approaches the swing structure, so that the position of the clamp 2 relative to the fixed frame 1 does not change, that is, to control the clamp 2 from moving away from the probe assembly 4, thereby ensuring that the probe assembly 4 and the conductive plate 3 remain in an electrically connected state. Specifically, refer to Figure 6As shown, the locking part 7 can be a stop bar or a stop block rotatably mounted on the fixed frame 1. Here, a stop bar is used, and its position satisfies the following conditions: when the clamp 2 slides relative to the fixed frame 1, the stop bar is located on the outside of the fixed frame 1. When the clamp 2 slides along the fixed frame 1 and approaches the swing structure, after the end of the clamp 2 passes the stop bar, the stop bar is pushed to the inside of the fixed frame 1 to prevent the clamp 2 from moving in the opposite direction to the original sliding direction.

[0047] It should be understood that the possible terms "first" or "second," etc., in the claims, specification, and drawings disclosed in this invention are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "including" used in the specification and claims of this invention indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0048] It should also be understood that the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of the disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0049] While the embodiments of the present invention are described above, these are merely examples for the purpose of facilitating understanding of the invention and are not intended to limit the scope or application scenarios of the invention. Any person skilled in the art can make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the patent protection scope of the present invention shall still be determined by the scope defined in the appended claims.

Claims

1. A lithium battery baking apparatus, characterized by, include: A fixed frame and a clamp slidably mounted on the fixed frame, the clamp including a heating plate for baking a lithium battery and a conductive plate with multiple electrical contacts, the heating plate being electrically connected to the conductive plate, the electrical contacts being used to contact a probe assembly when the clamp slides relative to the fixed frame, and also including a swing structure comprising a rotating body and a swing member having a through cavity, the rotating body being mounted on the fixed frame, the probe assembly being mounted on the swing member, the rotating body being at least partially located within the through cavity of the swing member, the movement of the swing member relative to the rotating body being configured such that: any straight line located in the plane containing any generatrix and center line of the rotating body and simultaneously located on the swing member, the straight line having a first angle with the center line of the rotating body, the variation value of the first angle being within a preset range, and the inner wall of the through cavity of the swing member not contacting the rotation surface of the rotating body.

2. The apparatus of claim 1, wherein, The oscillating component includes multiple tubular cavities. At least two tubular cavities are sequentially arranged on the oscillating component along a straight line parallel to the generatrix of the rotating body. Along the axial orthogonal projection direction of the rotating body, a segment of the oscillating component containing any of the at least two tubular cavities includes an array of tubular cavities. The array of tubular cavities includes at least three tubular cavities arranged centrally symmetrically about the centerline of the rotating body. Each tubular cavity has a ball bearing at its opening, and each tubular cavity contains a first spring bearing that acts on the ball bearing to give it a tendency to move towards the opening. The ball bearing contacts the rotating body, allowing the oscillating component to have a degree of freedom relative to the rotating body, swinging within a predetermined range with the contact point between the ball bearing and the rotating body as support.

3. The apparatus of claim 2, wherein, The device further includes a second spring-loaded component, which connects the fixed frame and the rotating body to allow the rotating body to have a degree of freedom relative to the fixed frame to swing within a preset range with the connection point between the second spring-loaded component and the fixed frame as a reference.

4. The apparatus of claim 3, wherein, The preset range of the first included angle change value is between -5° and 5°, and the range of the cone angle formed by the second rebound member swinging within the preset range is between 0° and 5°.

5. The apparatus of claim 3, wherein, The first spring-loaded component undergoes elastic deformation before the second spring-loaded component.

6. The apparatus of claim 2, wherein, The rotating body is a cylinder.

7. The apparatus according to claim 6, characterized in that, Three or four tubular cavities are sequentially arranged on the swing member along a straight line parallel to the generatrix of the cylinder. The diameter of the ball bearings in the middle one or two tubular cavities is larger than that in the tubular cavities on both sides. When the angle of the swing member relative to the cylinder changes, the ball bearings in the middle tubular cavity support the swing member, while the ball bearings in the tubular cavities on both sides adjust the change of the first included angle. The through-cavities of the swing member where the three or four tubular cavities are sequentially arranged along the direction parallel to the generatrix of the cylinder are located have a projected length segment on the center line, and the cylinder is located at least on the projected length segment.

8. The apparatus according to claim 7, characterized in that, The two ends of the through-cavity of the swing member are provided with chamfered edges, and the radius of the chamfered edges is smaller than the shortest distance from the two ends of the through-cavity to the inner side of the nearest tubular cavity.

9. The apparatus according to claim 1, characterized in that, The swing structure has multiple sets of swing members for fixing the probe assembly, and the multiple sets of swing members are arranged to satisfy the condition that when the clamp slides relative to the fixed frame to bring the electrical contact closer to the probe assembly, the electrical contact dynamically touches the probe assembly until the electrical contact and the end face of the probe make contact.

10. The apparatus according to claim 1, characterized in that, The device further includes: a first elastic connector and a second elastic connector, wherein the first elastic connector is used to connect the fixed frame to the side of the swing member where the probe assembly is provided, and the second elastic connector is used to connect the fixed frame to the other side of the swing member opposite to the side where the probe assembly is provided.

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