A lithium battery baking fixture

Abstract

The utility model provides a lithium battery baking clamp, including a first fixing plate and a second fixing plate located at the end, a plurality of guide rods located between the first fixing plate and the second fixing plate, the inner sides of two fixing seats connected to the lower parts of the first fixing plate and the second fixing plate are respectively provided with a first positioning hole and a second positioning hole, a contact assembly is provided between the two fixing seats, the first positioning hole is located directly above the second positioning hole, and spring positioning beads are provided on the left and right sides of the contact assembly; a probe seat is fixedly connected to the lower part of each heating plate, a probe assembly is provided on the probe seat, and the heating plate is electrically connected to the probe assembly; when the spring positioning bead is located in the first positioning hole, the probe assembly is electrically connected to the contact assembly, and when the spring positioning bead is located in the second positioning hole, the probe assembly is not in contact with the contact assembly. The utility model reduces the number of movable wires connected to the heating plate, and can avoid the problem that the movable wire is pulled back and forth and the root of the wire is torn off.

Description

Technical Field

[0001] The utility model generally relates to the technical field of lithium batteries, and more specifically, relates to a lithium battery baking fixture. Background Art

[0002] In the production process of lithium batteries, baking is an essential part. Since the electrolyte of lithium batteries is an organic substance without water molecules, the presence of water is extremely harmful to the battery and can easily cause the battery to heat up and explode. Therefore, the lithium battery must be vacuum baked to remove moisture before pre-sealing. The common baking method is to place the lithium battery on a tray containing the battery and place the tray in a baking oven for baking. There is also a contact clamp to clamp the lithium battery and then heat the heating plate that clamps the lithium battery to bake the lithium battery.

[0003] The existing soft-pack battery baking fixture has a large number of heating plates and a large number of temperature probes installed on the heating plates, and the bottom space of the fixture is small and compact. When the heating plates are close to each other to clamp the soft-pack battery, all the temperature probes change their distances along with the heating plates. At this time, the temperature probe wires connected to each temperature participate in the distance change process, and the power lines connected to each heating plate also participate in the distance change process; when the baking is finished, the heating plates move away from each other to facilitate the removal of the soft-pack battery. At this time, the temperature probes continue to change their distances along with the heating plates, and the temperature probe wires connected to each temperature probe continue to participate in the distance change process, and the power lines connected to each heating plate participate in the distance change process again. The two wires, the temperature probe wire and the heating plate power wire, participate in the distance change process too frequently. In addition, the space at the bottom of the fixture is too small to arrange longer wires. The root position of the wire is pulled and swung, and it is very easy for the wire to be torn off.

[0004] In view of this, it is urgent to provide a lithium battery baking fixture to solve the problem. Utility Model Content

[0005] In order to at least solve one or more technical problems in the above-mentioned background technology, the utility model proposes a lithium battery baking clamp, including a first fixed plate and a second fixed plate located at the end, and a plurality of guide rods located between the first fixed plate and the second fixed plate, the end of each guide rod is respectively connected to the two fixed plates, and a movable plate that can slide along the guide rod is also provided between the two fixed plates, and a plurality of heating plates are provided between the movable plate and the first fixed plate, and lithium batteries are placed between two adjacent heating plates, and also includes a screw rod arranged parallel to the guide rod, and the movable plate is fixedly connected to the screw rod nut, so that when the screw rod drives the screw rod nut to move along the axial direction of the guide rod, the movable plate moves toward the direction close to the first fixed plate to make all the heating plates close to each other, or the movable plate moves toward Move in the direction away from the first fixing plate; the inner sides of the two fixing seats fixedly arranged between the lower parts of the first fixing plate and the second fixing plate are respectively provided with a first positioning hole and a second positioning hole, a contact assembly is provided between the two fixing seats, the first positioning hole is located directly above the second positioning hole, and spring positioning beads are provided on the left and right sides of the contact assembly; a probe seat is fixedly connected to the lower part of each heating plate, a probe assembly is provided on the probe seat, and the heating plate is electrically connected to the probe assembly; when the spring positioning bead is located in the first positioning hole, the probe assembly is electrically connected to the contact assembly, and when the spring positioning bead is located in the second positioning hole, the probe assembly is not in contact with the contact assembly; also includes a limit assembly, the limit assembly is used to make each heating plate move within a preset area.

[0006] Preferably, each fixing seat is provided with a vertical guide rail, and the contact assembly can move up and down along the vertical guide rail.

[0007] Preferably, the contact assembly comprises a contact mounting plate, each contact is located on the contact mounting plate, and sliders are provided on both sides of the contact mounting plate, and the sliders are used to move up and down along the vertical guide rail.

[0008] Preferably, a bracket is provided under the contact mounting plate, the slider is fixedly arranged at both ends of the bracket, and the spring positioning beads are arranged on the outside of both ends of the bracket; at least two groups of force holes are provided at the bottom of the bracket to facilitate the spring positioning beads to move from the first positioning hole to the second positioning hole when a downward force is applied to the force holes.

[0009] Preferably, each of the two ends of the heating plate is provided with a mounting seat, the mounting seat is provided with a hole for passing the guide rod, and the mounting seat can slide along the guide rod; the limiting assembly includes a sliding rod, and the sliding rod is provided with a plurality of limiting blocks of the same thickness, each limiting block is located between two adjacent mounting seats; when the movable plate moves toward the direction approaching the first fixed plate, the limiting block is used to limit the minimum distance between two adjacent mounting seats, and when the movable plate moves toward the direction away from the first fixed plate, the limiting block is also used to make each heating plate except the heating plate adjacent to the first fixed plate move in the direction away from the first fixed plate.

[0010] Preferably, the probe assembly comprises a heating plate power probe, the heating plate is electrically connected to the heating plate power probe, and the heating plate power probe is used to be electrically connected to each contact of the contact assembly.

[0011] Preferably, the probe assembly further comprises a temperature signal probe, a temperature sensor is provided on the probe seat, the temperature sensor is electrically connected to the temperature signal probe, and the temperature signal probe is used to be electrically connected to each contact of the contact assembly.

[0012] The technical solution provided by this application may have the following beneficial effects:

[0013] By utilizing the device described in the above and multiple schemes of the utility model, that is, the utility model can respectively open a first positioning hole and a second positioning hole on the inner side of two fixed seats fixedly arranged between the lower part of the first fixed plate and the second fixed plate, and set a contact assembly between the two fixed seats, the first positioning hole is located directly above the second positioning hole, and spring positioning beads are provided on the left and right sides of the contact assembly; a probe seat is fixedly connected to the lower part of each heating plate, and a probe assembly is provided on the probe seat, and the heating plate is electrically connected to the probe assembly; when the spring positioning bead is located in the first positioning hole, the probe assembly is electrically connected to the contact assembly, and when the spring positioning bead is located in the second positioning hole, the probe assembly is not in contact with the contact assembly. In this way, the number of active wires connected to the heating plate can be greatly reduced, and in the process of the heating plate clamping or releasing the soft-pack battery to produce reciprocating motion, the active wire connected to the heating plate can be prevented from being pulled back and forth, resulting in the problem of the root of the active wire being torn off. Compared with the prior art, the active wire is converted into a relatively fixed wire through structural improvement, which reduces the probability of the wire being torn off and improves the stability of the equipment operation.

[0014] In some embodiments, the utility model can further provide a temperature sensor on the probe seat, and electrically connect the temperature sensor to the temperature signal probe, which is used to electrically connect to each contact of the contact assembly, thereby avoiding the problem that the root of the temperature sensor signal line is torn off due to the reciprocating motion of the heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, among which:

[0016] Figure 1 It is a top perspective view showing the utility model;

[0017] Figure 2 It is a bottom-up stereogram showing the present utility model;

[0018] Figure 3 It is a schematic diagram showing the assembly of the probe assembly and the heating plate of the utility model;

[0019] Explanation of the reference numerals: 11. first fixed plate; 12. second fixed plate; 13. guide rod; 14. movable plate; 15. heating plate; 16. screw rod; 17. fixing seat; 18. probe seat; 31. contact mounting plate; 41. bracket; 42. force hole; 51. mounting seat; 52. sliding rod; 53. limit block. DETAILED DESCRIPTION

[0020] Embodiments will now be described with reference to the accompanying drawings. It should be understood that for simplicity and clarity of explanation, reference numerals may be repeated in the accompanying drawings to indicate corresponding or similar elements where deemed appropriate. In addition, the present invention sets forth many specific details in order to provide a thorough understanding of the embodiments described herein. However, it will be appreciated by those of ordinary skill in the art that the embodiments described herein may be practiced without these specific details. In other cases, well-known methods, processes, and components are not described in detail to avoid obscuring the embodiments described herein. Moreover, the description should not be construed as limiting the scope of the embodiments described herein.

[0021] According to one embodiment of the present invention, referring to Figures 1 to 3, a lithium battery baking fixture is provided, which includes a first fixed plate 11 and a second fixed plate 12 located at the end, a plurality of guide rods 13 located between the first fixed plate 11 and the second fixed plate 12, the ends of each guide rod 13 are respectively connected to the two fixed plates, and a movable plate 14 that can slide along the guide rod 13 is also provided between the two fixed plates, and a plurality of heating plates 15 are provided between the movable plate 14 and the first fixed plate 11, and lithium batteries are placed between two adjacent heating plates 15, and a screw rod 16 is provided in parallel with the guide rod 13, and the movable plate 14 is fixedly connected to the screw rod 16 nut, so that when the screw rod 16 drives the screw rod 16 nut to move along the axial direction of the guide rod 13, the movable plate 14 moves in a direction close to the first fixed plate 11 to make all the heating plates 15 close to each other, or The movable plate 14 moves in a direction away from the first fixed plate 11; the inner sides of the two fixed seats 17 fixedly arranged between the lower parts of the first fixed plate 11 and the second fixed plate 12 are respectively provided with a first positioning hole and a second positioning hole, a contact assembly is provided between the two fixed seats 17, the first positioning hole is located directly above the second positioning hole, and spring positioning beads are provided on the left and right sides of the contact assembly; a probe seat 18 is fixedly connected to the lower part of each heating plate 15, a probe assembly is provided on the probe seat 18, and the heating plate 15 is electrically connected to the probe assembly; when the spring positioning bead is located in the first positioning hole, the probe assembly is electrically connected to the contact assembly, and when the spring positioning bead is located in the second positioning hole, the probe assembly is not in contact with the contact assembly; a limit assembly is also included, and the limit assembly is used to enable each heating plate 15 to move within a preset area.

[0022] It can be understood that the clamping between the left and right sides of the contact assembly and the inner sides of the two fixing seats 17 is achieved by positioning the spring positioning beads in the first positioning hole or the second positioning hole. With the arrangement of this structure, when the spring positioning beads are located in the first positioning hole, the contact assembly is electrically connected to the probe assembly and does not fall off; and when the spring positioning beads are located in the second positioning hole, while ensuring that the contact assembly does not contact the probe assembly, the contact assembly does not completely detach from the fixing seat 17, so that when the contact assembly needs to be electrically connected to the probe assembly, it is convenient to move the spring positioning beads located on the left and right sides of the contact assembly from the second positioning hole to the first positioning hole.

[0023] According to another embodiment, a vertical rail may be provided on each fixing seat 17, and the contact assembly can move up and down along the vertical rail. The contact assembly moves along the vertical rail, which helps to improve the stability of the contact assembly when it moves back and forth between the first positioning hole and the second positioning hole.

[0024] The movement of the contact assembly along the vertical guide rail can be achieved through the following structure. For example, in the above embodiment, the contact assembly includes a contact mounting plate 31, each contact is located on the contact mounting plate 31, and sliders are provided on both sides of the contact mounting plate 31, and the sliders are used to move up and down along the vertical guide rail.

[0025] In the above embodiment, a bracket 41 is provided below the contact mounting plate 31, sliders are fixedly arranged at both ends of the bracket 41, and spring positioning beads are arranged outside the two ends of the bracket 41; at least two groups of force holes 42 are provided at the bottom of the bracket 41, so that when a downward force is applied to the force holes 42, the spring positioning beads can be easily moved from the first positioning hole to the second positioning hole.

[0026] In the above-mentioned embodiments, the contact mounting plate 31 has wires connected to all contacts, and the wires are used to connect the power supply. Obviously, the influence of the activity amplitude of the contact assembly in the height interval between the first positioning hole and the second positioning hole on the wires is much smaller than the influence of the heating plate 15 reciprocating on the wires connecting the heating plate 15 and the bottom heating plate in the prior art.

[0027] When the movable plate 14 moves toward the first fixed plate 11 so that the heating plate 15 clamps the soft-pack battery, after clamping the soft-pack battery, in order to achieve that each probe of the probe assembly below the heating plate 15 is just located above the corresponding contact of the contact assembly, in some embodiments, both ends of each heating plate 15 are provided with a mounting seat 51, and the mounting seat 51 is provided with a hole for penetrating the guide rod 13, and the mounting seat 51 can slide along the guide rod 13; the limiting assembly includes a slide bar 52, and the slide bar 52 is provided with a plurality of limiting blocks 53 of the same thickness, each limiting block 53 is located between two adjacent mounting seats 51; when the movable plate 14 moves in a direction close to the first fixed plate 11, the limiting block 53 is used to limit the minimum distance between two adjacent mounting seats 51, and when the movable plate 14 moves in a direction away from the first fixed plate 11, the limiting block 53 is also used to make each heating plate 15 except the heating plate 15 adjacent to the first fixed plate 11 move in a direction away from the first fixed plate 11. In this way, when the distance between two adjacent mounting seats 51 is the smallest, since the thickness of the limit block 53 is consistent, the minimum distance between each two adjacent mounting seats 51 is equal. This can ensure that the horizontal distances between adjacent probe assemblies are equal, making it easier to make the probes of the probe assembly correspond to the various contacts of the contact assembly, or to make the probes of the probe assembly be located directly above the corresponding contacts of the contact assembly, thereby improving the accuracy of the contact between the probes and the corresponding contacts.

[0028] In a specific embodiment, the probe assembly includes a heating plate 15 power probe, the heating plate 15 is electrically connected to the heating plate 15 power probe, and the heating plate 15 power probe is used to be electrically connected to each contact of the contact assembly. The purpose of the heating plate 15 power probe being electrically connected to the corresponding contact is to supply power to the heating plate 15, and the current passing through the heating plate 15 power probe is greater than or equal to 30 mA.

[0029] In another embodiment, the probe assembly may further include a temperature signal probe, a temperature sensor is provided on the probe seat 18, the temperature sensor is electrically connected to the temperature signal probe, and the temperature signal probe is used to be electrically connected to each contact of the contact assembly. The purpose of the temperature signal probe being electrically connected to the corresponding contact is to power the temperature sensor, and the current passing through the temperature signal probe is less than or equal to 10 mA.

[0030] It should be understood that the possible terms "first" or "second" etc. in the claims, specifications and drawings disclosed in the utility model are used to distinguish different objects, rather than to describe a specific order. The terms "include" and "comprise" used in the specifications and claims disclosed in the utility model indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0031] It should also be understood that the terms used in this utility model disclosure specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model disclosure. As used in the utility model disclosure specification and claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the utility model disclosure specification and claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0032] Although the implementation methods of the utility model are as above, the above contents are only examples adopted to facilitate the understanding of the utility model, and are not intended to limit the scope and application scenarios of the utility model. Any technician in the technical field described in the utility model can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the utility model, but the scope of patent protection of the utility model shall still be based on the scope defined by the attached claims.

Claims

1. A lithium battery baking fixture, comprising a first fixed plate (11) and a second fixed plate (12) located at the end, a plurality of guide rods (13) located between the first fixed plate (11) and the second fixed plate (12), the end of each guide rod (13) being connected to the two fixed plates respectively, a movable plate (14) being provided between the two fixed plates and being capable of sliding along the guide rods (13), a plurality of heating plates (15) being provided between the movable plate (14) and the first fixed plate (11), a lithium battery being placed between two adjacent heating plates (15), and a screw rod (16) being provided parallel to the guide rod (13), the movable plate (14) being fixedly connected to a screw nut, so that when the screw rod (16) drives the screw nut to move along the axial direction of the guide rod (13), the movable plate (14) moves in a direction approaching the first fixed plate (11) so that all the heating plates (15) are close to each other, or the movable plate (14) moves in a direction away from the first fixed plate (11); characterized in that: A first positioning hole and a second positioning hole are respectively formed on the inner sides of two fixing seats (17) fixedly arranged between the lower parts of the first fixing plate (11) and the second fixing plate (12); a contact assembly is provided between the two fixing seats (17); the first positioning hole is located directly above the second positioning hole; spring positioning beads are provided on the left and right sides of the contact assembly; a probe seat (18) is fixedly connected to the lower part of each heating plate (15); a probe assembly is provided on the probe seat (18); the heating plate (15) is electrically connected to the probe assembly; when the spring positioning bead is located in the first positioning hole, the probe assembly is electrically connected to the contact assembly; when the spring positioning bead is located in the second positioning hole, the probe assembly is not in contact with the contact assembly; and a limit assembly is also provided, the limit assembly is used to enable the heating plate (15) to move within a preset area.

2. A lithium battery baking fixture according to claim 1, characterized in that: Each fixing seat (17) is provided with a vertical guide rail, and the contact assembly can move up and down along the vertical guide rail.

3. A lithium battery baking fixture according to claim 2, characterized in that: The contact assembly comprises a contact mounting plate (31), each contact being located on the contact mounting plate (31), and sliders are provided on both sides of the contact mounting plate (31), the sliders being used to move up and down along the vertical guide rail.

4. A lithium battery baking fixture according to claim 3, characterized in that: A bracket (41) is provided below the contact mounting plate (31), the sliders are fixedly arranged at both ends of the bracket (41), and the spring positioning beads are arranged outside the two ends of the bracket (41); at least two groups of force holes (42) are provided at the bottom of the bracket (41), so that when a downward force is applied to the force holes (42), the spring positioning beads can be easily moved from the first positioning hole to the second positioning hole.

5. A lithium battery baking fixture according to claim 1, characterized in that: Each of the heating plates (15) is provided with a mounting seat (51) at both ends, and a hole for passing the guide rod (13) is provided on the mounting seat (51), and the mounting seat (51) can slide along the guide rod (13); the limiting assembly comprises a slide rod (52), and a plurality of limiting blocks (53) of the same thickness are provided on the slide rod (52), and each limiting block (53) is located between two adjacent mounting seats (51); when the movable plate (14) moves in a direction approaching the first fixed plate (11), the limiting block (53) is used to limit the minimum distance between the two adjacent mounting seats (51); when the movable plate (14) moves in a direction away from the first fixed plate (11), the limiting block (53) is also used to make each heating plate (15) except the heating plate (15) adjacent to the first fixed plate (11) move in a direction away from the first fixed plate (11).

6. A lithium battery baking fixture according to claim 1, characterized in that: The probe assembly comprises a heating plate power probe, the heating plate (15) is electrically connected to the heating plate power probe, and the heating plate power probe is used to be electrically connected to each contact of the contact assembly.

7. A lithium battery baking fixture according to claim 6, characterized in that: The probe assembly also includes a temperature signal probe. A temperature sensor is provided on the probe seat (18). The temperature sensor is electrically connected to the temperature signal probe. The temperature signal probe is used to be electrically connected to each contact of the contact assembly.

Images