A kind of elastic needle structure, battery pack packaging structure and battery module

Abstract

The utility model relates to electronic connector technical field, especially a kind of elastic needle structure, battery pack packaging structure and battery module. Elastic needle structure includes shell, ejector pin, elastic member and fixing part. The cooperation of fixing part and shell forms fixed position, by the ejector pin mounting portion is clamped in fixed position, so that elastic needle structure is fixed on ejector pin mounting structure, realizes the mechanical connection of elastic needle structure and ejector pin mounting structure. Compared with welding and glue fixing, the fixed mode of mechanical connection does not appear aging failure in the process of long-term use, can prolong the service life of elastic needle structure.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, and in particular to a spring pin structure, a battery pack packaging structure, and a battery module. Background Technology

[0002] Currently, most Pogopin spring structures are fixed to the spring mounting part of the spring mounting structure by welding or gluing. Both welding and gluing methods carry the risk of human error, making it difficult to control the height of the fixing position and resulting in inconsistent fixing quality. Furthermore, welding and gluing fixations have relatively low strength and are prone to failure under external forces. Over time, they also exhibit aging failure. Developing a fixing method that is easy to operate, has controllable quality, can withstand significant external forces, and is resistant to aging has become a pressing technical problem for those skilled in the art. Utility Model Content

[0003] The purpose of this utility model is to provide a spring pin structure, a battery pack packaging structure, and a battery to solve the problems of uncontrollable fixing quality and aging failure after long-term use in existing fixing methods. To address the problems and shortcomings of the prior art, this utility model provides a spring pin structure and a battery pack packaging structure. The spring pin structure of this utility model includes: A housing, wherein a first opening and a second opening are provided at both ends of the housing; The ejector pin includes a first ejector pin structure and a second ejector pin structure connected to each other; the second ejector pin structure is slidably disposed within the housing, and the first ejector pin structure passes through the first opening; the fastener is fixed to the housing, and at least a portion of the fastener extends into the housing from the second opening; An elastic element is located between the second ejector pin structure and the fixing element; the elastic element is spring-loaded onto the second ejector pin structure; A fixing position is formed between the fixing member and the housing; the fixing member and the housing are used to cooperate in clamping the spring pin mounting part that extends into the fixing position on the spring pin mounting structure, so as to fix the spring pin structure on the spring pin mounting structure by means of mechanical connection.

[0004] Optionally, the two ends of the elastic element abut against the second ejector pin structure and the fixing element, respectively; or, One end of the elastic element is fixedly connected to the second ejector pin structure, and the other end abuts against the fixing element; or, One end of the elastic element abuts against the second ejector pin structure, and the other end is fixedly connected to the fixing element.

[0005] Optionally, the spring pin structure includes a partition, the peripheral wall of which is connected to the inner wall of the housing, and the two ends of the elastic element abut against or are fixedly connected to the second ejector pin structure and the partition, respectively.

[0006] Optionally, the outer wall of the housing has a rotation limiting surface; the rotation limiting surface is used to cooperate with the rotation limiting part on the spring pin mounting structure.

[0007] Optionally, the outer wall of the housing includes two parallel planes and two arc surfaces, the two planes being connected by the arc surfaces, and the planes serving as the rotation limiting surfaces.

[0008] Optionally, the fastener is a screw, and the screw has external threads; The housing has at least a portion of its inner wall provided with an internal thread that matches the external thread.

[0009] Optionally, the elastic element is a compression spring, and the rotation direction of the external thread of the screw is the same as the rotation direction of the compression spring.

[0010] This utility model also provides a battery pack packaging structure, the battery pack packaging structure comprising: The spring pin structure as described in any of the above items; The encapsulation structure body has the spring pin mounting structure, the spring pin mounting structure has the spring pin mounting part, and the spring pin mounting part has the mounting hole; the fixing member passes through the mounting hole, and the fixing member cooperates with the housing to clamp the spring pin mounting part in the fixing position; A packaging cover plate is snapped into the packaging structure body to form a receiving cavity; when the packaging cover plate is snapped into the packaging structure body, the spring pin structure is in an energy storage state, and the inner side of the packaging cover plate is in contact with the ejector pin; when the packaging cover plate is released from the packaging structure body, the spring pin structure lifts the packaging cover plate.

[0011] Optionally, there are multiple spring pin mounting structures, which are distributed circumferentially around the receiving cavity.

[0012] This utility model also provides a battery module, the battery module comprising: Battery pack packaging structure as described in any of the above items; A battery, which is housed in the receiving cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The fastener and the housing cooperate to form a fixed position. By clamping the spring pin mounting part in the fixed position, the spring pin structure is fixed on the spring pin mounting structure, thus realizing the mechanical connection between the spring pin structure and the spring pin mounting structure. The mechanical connection has excellent fatigue resistance, high connection strength, and strong stability, and can withstand large external forces without deformation. Compared with welding and glue fixing, the mechanical connection fixing method will not experience aging failure during long-term use, and can extend the service life of the spring pin structure.

[0014] (2) Choosing mechanical connection allows for the pre-setting of the height of the spring pin structure after fixation, which reduces height deviation during operation compared to welding and glue fixation, thus making the fixation quality controllable.

[0015] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0016] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is an exploded view of the spring pin structure according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the spring pin structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the spring pin structure according to one embodiment of the present invention; Figure 4 This is a partial schematic diagram of the battery pack packaging structure according to an embodiment of the present invention.

[0017] In the figure: 10-spring pin structure, 11-shell, 12-ejector pin, 121-first ejector pin structure, 122-second ejector pin structure, 13-elastic element, 14-fixing element, 20-encapsulation structure body, 21-spring pin mounting structure, 211-spring pin mounting part, 212-mounting hole, 213-rotation limiting surface. Detailed Implementation

[0018] The following reference Figures 1 to 4This invention describes a spring-loaded pin structure, a battery pack packaging structure, and a battery according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0019] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] Figure 1 This is an exploded view of a spring pin structure according to an embodiment of the present invention. Figure 1 As shown, combined with Figures 2 to 4 This utility model provides a spring pin structure 10, a battery pack packaging structure, and a battery. The spring pin structure 10 includes a housing 11, a pin 12, a fixing member 14, and an elastic member 13. The housing 11 has a first opening and a second opening at both ends. The pin 12 includes a first pin structure 121 and a second pin structure 122 connected to each other, wherein the second pin structure 122 slides inside the housing 11, and the first pin structure 121 passes through the first opening. The fixing member 14 is fixed to the housing 11, and at least a portion of the fixing member 14 extends into the housing 11 from the second opening. The elastic member 13 is located between the second pin structure 122 and the fixing member 14, and the elastic member 13 is elastically pressed against the second pin structure 122. When the fixing member 14 extends into the housing 11, a fixing position is formed between the fixing member 14 and the housing 11. The fixing member 14 and the housing 11 are used to cooperate to clamp the spring pin mounting part 211 extending into the fixing position on the spring pin mounting structure 21, so as to fix the spring pin structure 10 on the spring pin mounting structure 21 by mechanical connection.

[0021] It should be noted that, regardless of the working state of the spring needle structure 10, at least a portion of the second ejector pin structure 122 is located within the internal space enclosed by the housing 11.

[0022] Specifically, the spring pin mounting structure 21 on which the spring pin structure 10 is installed has a spring pin mounting portion 211. The spring pin mounting portion 211 has a mounting hole 212 coaxial with the housing 11 of the spring pin structure 10, and the mounting hole 212 penetrates the spring pin mounting portion 211. When installing the spring pin structure 10, firstly, the ejector pin 12 and the elastic element 13 are inserted into the interior of the housing 11; secondly, the housing 11 containing the ejector pin 12 and the elastic element 13 is placed inside the spring pin mounting structure 21; finally, the fixing member 14 is passed through the mounting hole 212 on the spring pin mounting portion 211, so that the fixing member 14 enters the housing 11 and contacts the elastic element 13.

[0023] In this embodiment, the fastener 14 and the housing 11 cooperate to form a fixed position. By clamping the spring pin mounting part 211 in the fixed position, the spring pin structure 10 is fixed on the spring pin mounting structure 21, thus achieving a mechanical connection between the spring pin structure 10 and the spring pin mounting structure 21. The mechanical connection has excellent fatigue resistance, high connection strength, and strong stability, and can withstand large external forces without deformation; furthermore, the size of the fastener 14 extending into the housing 11 is controllable. Therefore, compared to welding and adhesive fixing, which are prone to aging and failure after long-term use, the mechanical connection method is reliable, durable, and of controllable quality.

[0024] In some embodiments of this utility model, the two ends of the elastic member 13 abut against the second ejector structure 122 and the fixing member 14, respectively. Specifically, one end of the elastic member 13 contacts the second ejector structure 122, and the other end of the elastic member 13 contacts the fixing member 14. In other words, the elastic member 13 is located between the second ejector structure 122 and the fixing member 14, and the three are arranged sequentially inside the housing 11.

[0025] After installation and fixation, part or all of the first ejector pin structure 121 protrudes outside the housing 11, and the elastic element 13 is enclosed between the fixing element 14 and the first ejector pin structure 121. When the first ejector pin structure 121 is pressed, it moves into the housing 11, and the elastic element 13 deforms under pressure, thereby generating elastic force pointing to both ends. When the pressure on the first ejector pin structure 121 is removed or reduced, the elastic deformation of the elastic element 13 disappears or decreases, and the first ejector pin structure 121 moves out of the housing 11.

[0026] In some other embodiments of this utility model, one end of the elastic member 13 is fixedly connected to the second ejector pin structure 122. The fixed connection between the elastic member 13 and the second ejector pin structure 122 reduces the possibility of the elastic member 13 shifting position when the ejector pin 12 is compressed, and ensures that the pressure on the ejector pin 12 and the elastic member 13 is on a straight line.

[0027] In some embodiments of this utility model, the spring pin structure 10 includes a partition, the peripheral wall of which is connected to the inner wall of the housing 11, and the two ends of the elastic member 13 abut against the second ejector structure 122 and the partition, respectively. Specifically, the spring pin structure 10 includes a partition connected to the inner wall of the housing 11. When the spring pin structure 10 is working, the second ejector structure 122 and the partition together limit the deformation of the elastic member. The fixing member 14 and the elastic member 13 do not directly contact each other, thereby avoiding damage to the elastic member 13 by the fixing member 14.

[0028] In some other embodiments of this utility model, the spring pin structure 10 includes a partition plate, the peripheral wall of which is connected to the inner wall of the housing 11, and the two ends of the elastic member 13 are respectively fixedly connected to the second ejector pin structure 122 and the partition plate. The fixed connection between the two ends of the elastic member 13 and the second ejector pin structure 122 and the partition plate reduces the possibility of the elastic member 13 shifting position when the ejector pin 12 is compressed, and makes the forces on the ejector pin 12, the elastic member 13 and the partition plate lie on a straight line.

[0029] In some embodiments of this utility model, the ejector pin 12, the elastic element 13, the partition plate, and the housing 11 are conductive. The spring pin structure 10 is conductive as a whole and can be used as a precision connector in electronic products such as mobile phones, and can be used in semiconductor devices for connection.

[0030] In some embodiments of this utility model, the outer wall of the housing 11 has a rotation limiting surface 213, which is used to cooperate with the rotation limiting part on the spring pin mounting structure 21. Specifically, the housing 11 is not cylindrical, and when the spring pin is inserted into the spring pin mounting structure 21, the housing 11 is restricted and cannot rotate. The rotation limiting surface 213 prevents the housing 11 from rotating when the locking fastener 14 is fastened, thereby improving the fastening efficiency and effect. The rotation limiting surface 213 can be one or more planes or arc surfaces that are not coaxial with the housing 11.

[0031] In some embodiments of this utility model, the outer wall of the housing 11 includes two parallel planes and two arc surfaces, with the two planes connected by the arc surfaces. The planes serve as rotation limiting surfaces 213. Using a plane as the rotation limiting surface 213 simplifies the manufacturing process.

[0032] In some embodiments of this utility model, the fixing member 14 is a screw with external threads, and at least a portion of the interior of the housing 11 is provided with internal threads that match the external threads. Specifically, after placing the housing 11 containing the ejector pin 12 and the elastic member 13 into the spring pin mounting structure 21, the screw is inserted into the housing 11 through the mounting hole 212 on the spring pin mounting part 211, and the screw is rotated to make the screw contact the elastic member 13.

[0033] In this embodiment, a housing 11 with internal threads and screws adapted to the internal threads are designed. In use, the spring pin structure 10 is fixed to the component on which the spring pin structure 10 needs to be installed by bolt connection, realizing the mechanical connection between the spring pin structure 10 and the component. The bolt connection method allows for disassembly without damaging the structure, and the bolts and nuts can be reused multiple times.

[0034] In some embodiments of this utility model, the elastic element 13 is a compression spring, and the rotation direction of the external thread of the screw is the same as the rotation direction of the compression spring. That is, the rotation direction of the compression spring and the rotation direction of the external thread of the screw can both be clockwise or both be counterclockwise.

[0035] The rotation direction of the compression spring is the same as the rotation direction of the external thread of the screw, which can prevent jamming when the screw is tightened.

[0036] In some embodiments of this invention, the two ends of the compression spring are deflected inward. That is, both the head and tail of the compression spring are deflected inward to prevent the head and / or tail from getting caught in the internal threads, thus avoiding jamming. The inward deflection of the two ends of the compression spring prevents jamming when the compression spring moves inside the housing 11.

[0037] In some embodiments of this invention, the ejector pin 12, the elastic element 13, and the fixing element 14 are all conductive. The spring pin structure 10 is conductive as a whole, and can be used as a precision connector in electronic products such as mobile phones, and can be used in semiconductor devices for connection.

[0038] In some other embodiments of this utility model, the ejector pin 12, the elastic element 13, the fixing element 14, and the housing 11 are conductive. The spring pin structure 10 is conductive as a whole and can be used as a precision connector in electronic products such as mobile phones, and can be used in semiconductor devices for connection.

[0039] This utility model provides a battery pack packaging structure, which includes a spring pin structure 10, a packaging structure body 20, and a packaging cover plate as described in any of the above embodiments. The packaging structure body 20 is provided with a spring pin mounting structure 21, which has a spring pin mounting portion 211 and a mounting hole 212. A fixing member 14 passes through the mounting hole 212 and cooperates with the housing 11 to clamp the spring pin mounting portion 211 in a fixed position. The packaging cover plate and the packaging structure body 20 are snapped together to form a receiving cavity. When the packaging cover plate and the packaging structure body 20 are snapped together, the spring pin structure 10 is in an energy storage state, and the inner side of the packaging cover plate is in contact with the spring pin; when the packaging cover plate and the packaging structure body 20 are released from the snap-fit, the spring pin structure 10 lifts the packaging cover plate. It should be noted that the packaging cover plate has a buckle, and the packaging structure body 20 has a slot.

[0040] Specifically, the housing 11, containing the ejector pin 12 and the elastic element 13, is placed into the spring pin mounting structure 21. The fixing element 14 passes through the mounting hole 212 and connects to the housing 11 located in the spring pin mounting structure 21, thus fixing the spring pin structure 10 to the battery pack packaging structure body. When it is necessary to close the packaging structure, the packaging cover is aligned with the packaging structure body 20 and brought close to the packaging structure. Then, the buckle on the packaging cover will engage with the slot on the packaging structure body 20, completing the stable connection between the packaging cover and the packaging structure body 20, so that the entire packaging structure is in a closed state. During this process, the packaging cover will contact the spring pin structure 10 mounted on the packaging structure body 20 and press down the ejector pin 12 on the spring pin structure 10, so that the spring pin structure 10 is in a compressed state. At this time, the spring pin structure 10 has a large elastic potential energy. When it is necessary to open the battery pack packaging structure, simply operate the buckle to release it from the snap-fit ​​state. After losing the buckle constraint, the spring pin structure 10 in the compressed state will quickly release energy and spring upward. The spring-loaded structure 10 generates a thrust that acts on the encapsulation cover, lifting it up and allowing the encapsulation cover to be opened, facilitating operation inside the battery pack encapsulation structure.

[0041] Of course, in some other embodiments of this utility model, the buckle can also be set on the encapsulation structure body 20, and the slot can be set on the encapsulation cover plate.

[0042] In some embodiments of the battery pack packaging structure of this utility model, there is only one spring-loaded pin mounting structure 21. In this embodiment, there is only one spring-loaded pin structure 10 between the packaging cover and the packaging structure body 20, and the packaging structure body 20 is simple to manufacture.

[0043] In some embodiments of the battery pack packaging structure of this utility model, there are multiple spring pin mounting structures 21, which are distributed circumferentially around the receiving cavity.

[0044] Specifically, multiple spring-loaded mounting structures 21 can be distributed circumferentially along the packaging structure body 20 at equal or unequal intervals. For example, on a square packaging structure body 20, multiple spring-loaded mounting structures 21 can be distributed on the same sidewall of the packaging structure body 20, or on two adjacent or opposite sidewalls of the packaging structure body 20. For a square packaging structure body 20, it is preferable to have four spring-loaded mounting structures 21, distributed at the four corners of the square packaging structure body 20, which is more conducive to distributing the force and automatically popping up the packaging cover when unlocking.

[0045] In this embodiment, multiple spring pin mounting structures 21 are provided, which can accommodate more spring pin structures 10 and increase the thrust of the spring pin structures 10 on the sealing cover after the snap-fit ​​constraint is lost.

[0046] This utility model also provides a battery module, including the battery pack packaging structure and battery of any of the above embodiments. The battery is housed in the battery pack packaging structure. Using the battery pack packaging structure of the above embodiments, disassembly is convenient.

[0047] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A spring-loaded pin structure, characterized in that, The spring pin structure includes: A housing, wherein a first opening and a second opening are provided at both ends of the housing; The ejector pin includes a first ejector pin structure and a second ejector pin structure connected to each other; the second ejector pin structure is slidably disposed within the housing, and the first ejector pin structure passes through the first opening. A fastener, the fastener being fixed to the housing, at least a portion of the fastener extending into the housing from the second opening; An elastic element is located between the second ejector pin structure and the fixing element; the elastic element is spring-loaded onto the second ejector pin structure; A fixing position is formed between the fixing member and the housing; the fixing member and the housing are used to cooperate in clamping the spring pin mounting part that extends into the fixing position on the spring pin mounting structure, so as to fix the spring pin structure on the spring pin mounting structure by means of mechanical connection.

2. The spring pin structure according to claim 1, characterized in that, The two ends of the elastic element abut against the second ejector pin structure and the fixing element, respectively; or, One end of the elastic element is fixedly connected to the second ejector pin structure, and the other end abuts against the fixing element; or, One end of the elastic element abuts against the second ejector pin structure, and the other end is fixedly connected to the fixing element.

3. The spring pin structure according to claim 1, characterized in that, The spring pin structure includes a partition, the peripheral wall of which is connected to the inner wall of the housing, and the two ends of the elastic element are respectively abutted against or fixedly connected to the second ejector pin structure and the partition.

4. The spring pin structure according to claim 1, characterized in that, The outer wall of the housing has a rotation limiting surface; the rotation limiting surface is used to cooperate with the rotation limiting part on the spring pin mounting structure.

5. The spring pin structure according to claim 4, characterized in that, The outer wall of the housing includes two parallel planes and two arc surfaces, the two planes being connected by the arc surfaces, and the planes serving as the rotation limiting surfaces.

6. The spring pin structure according to claim 1, characterized in that, The fastener is a screw, and the screw has external threads; The housing has at least a portion of its inner wall provided with an internal thread that matches the external thread.

7. The spring pin structure according to claim 6, characterized in that, The elastic element is a compression spring, and the rotation direction of the external thread of the screw is the same as the rotation direction of the compression spring.

8. A battery pack packaging structure, characterized in that, The battery pack packaging structure includes: The spring pin structure as described in any one of claims 1-7; The encapsulation structure body has the spring pin mounting structure, the spring pin mounting structure has the spring pin mounting part, and the spring pin mounting part has the mounting hole; the fixing member passes through the mounting hole, and the fixing member cooperates with the housing to clamp the spring pin mounting part in the fixing position; A packaging cover plate is snapped into the packaging structure body to form a receiving cavity; when the packaging cover plate is snapped into the packaging structure body, the spring pin structure is in an energy storage state, and the inner side of the packaging cover plate is in contact with the ejector pin; when the packaging cover plate is released from the packaging structure body, the spring pin structure lifts the packaging cover plate.

9. A battery pack packaging structure, characterized in that, The spring pin mounting structure comprises multiple spring pins, which are circumferentially spaced around the receiving cavity.

10. A battery module, characterized in that, The battery module includes: The battery pack packaging structure as described in claim 8 or 9; A battery, which is housed in the receiving cavity.

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