Charging bracket and battery replacement station

Abstract

The present invention belongs to the technical field of battery pack charging, and discloses a charging bracket and a battery swap station. The charging bracket includes: a fixed seat; a support frame, which is arranged on the fixed seat, and the support frame is a frame structure for carrying a battery pack; a first positioning column, the first positioning column includes a supporting portion and a tip portion, the supporting portion is arranged on the support frame, and the tip portion is arranged on the top of the supporting portion, and a first positioning guide sleeve is respectively arranged at the bottom of the battery pack; the tip portion is configured to be inserted into the first positioning guide sleeve and slide with it, which is used for the rough positioning of the battery pack, and the supporting portion is configured to be inserted into the first positioning guide sleeve and slide with it, which is used for the fine alignment of the battery pack, and an electrical connection mechanism is arranged on the support frame, so that the battery pack is electrically connected to the electrical connection mechanism. The charging bracket adopts a combination of rough alignment and fine alignment to achieve a dual positioning effect of the battery pack, and has good charging stability.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack charging, and in particular to a charging bracket and a battery replacement station. Background Art

[0002] As people pay more and more attention to the environment, batteries are widely used as clean energy. Because some electronic products do not have enough battery capacity, or according to the required power, they need a larger battery pack to meet the demand for repeated charging.

[0003] The existing method of charging the battery pack using a charging bin or a charging rack is difficult to achieve accurate positioning between the battery pack and the charging rack for a larger battery pack, resulting in a large position deviation at the electrical connection interface between the battery pack and the charging rack, causing poor or even failure of the electrical connection between the two, poor charging effect, low reliability, and difficulty in meeting the diverse needs of users. Summary of the invention

[0004] The purpose of the present invention is to provide a charging bracket and a battery swap station with good positioning effect and excellent charging effect.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A charging bracket, used for charging a battery pack, comprising:

[0007] Fixed seat;

[0008] A support frame is arranged on the fixing seat, and the support frame is a frame structure for carrying the battery pack;

[0009] A first positioning column, the first positioning column comprises a support portion and a tip portion, the support portion is arranged on the support frame, and the tip portion is arranged on the top of the support portion; a first positioning guide sleeve is arranged at the bottom of the battery pack, the tip portion is configured to be inserted into the first positioning guide sleeve and slidably cooperate with the first positioning guide sleeve for rough positioning of the battery pack, and the support portion is configured to be inserted into the first positioning guide sleeve and slidably cooperate with the first positioning guide sleeve for fine alignment of the battery pack;

[0010] The electrical connection mechanism is disposed on the support frame, so that the battery pack is electrically connected to the electrical connection mechanism.

[0011] Preferably, the outer diameter of the support portion is greater than the outer diameter of the tip portion.

[0012] Preferably, the tip portion is a columnar structure, or the outer diameter of the tip portion gradually decreases in a direction away from the support portion.

[0013] Preferably, the support portion is a columnar structure, or the outer diameter of the support portion gradually decreases toward the tip portion.

[0014] Preferably, the support portion is a columnar structure, and the outer diameter of the tip portion gradually decreases in a direction away from the support portion.

[0015] Preferably, a weight-reducing notch is provided on the support portion.

[0016] Preferably, a limiting member is provided on the electrical connection mechanism, and a top surface of the limiting member is used for limiting the battery pack.

[0017] Preferably, the limiting member is configured to penetrate the electrical connection mechanism and be able to adjust the distance between the limiting member and the battery pack.

[0018] Preferably, a buffer pad is further included, one side of which is arranged on the top surface of the support frame, and the other side of which can abut against the bottom of the battery pack.

[0019] Preferably, a position sensor is further included, wherein the position sensor is arranged on the support frame and is used to detect the position of the battery pack.

[0020] To achieve the above-mentioned object, the present invention further provides a battery swap station, comprising a charger and the above-mentioned charging bracket, wherein the charger is electrically connected to an electrical connection mechanism of the charging bracket.

[0021] Beneficial effects of the present invention:

[0022] The charging bracket provided by the present invention has a large gap between the tip and the inner wall of the first positioning guide sleeve, so that the tip has a large range of movement in the first positioning guide sleeve, which facilitates the tip to pass through the first positioning guide sleeve first. The tip is provided for rough positioning of the battery pack, thereby achieving the effect of initial pre-positioning. If only the tip exists, although it can ensure that the tip can quickly slide into the first positioning guide sleeve, the gap between the two is large, resulting in a poor positioning effect. Therefore, the tip and the support are directly connected to facilitate the transition between the tip and the support, and the support and the inner wall of the first positioning guide sleeve can cooperate with each other. The first positioning guide sleeve plays a guiding role for the support while being used for precise alignment of the battery pack to ensure the positioning of the support and the first positioning guide sleeve. A combination of rough alignment and precise alignment is adopted to achieve a dual positioning effect of the battery pack, with good positioning accuracy, ensuring good reliability of the electrical connection between the battery pack and the electrical connection mechanism, and good charging stability.

[0023] The present invention provides a battery swap station, comprising a charger and the above-mentioned charging bracket, wherein the charger is electrically connected to an electrical connection mechanism of the charging bracket to provide electrical energy to the charging bracket, thereby ensuring the charging effect of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the structure of the charging bracket provided in the first embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of a battery pack required to be charged by the charging bracket provided in the first embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a first positioning column in a charging bracket provided in Embodiment 1 of the present invention;

[0027] Figure 4 is a cross-sectional schematic diagram of a first positioning column in a charging bracket provided in Embodiment 2 of the present invention;

[0028] Figure 5 is a cross-sectional schematic diagram of a first positioning column in a charging bracket provided in Embodiment 3 of the present invention;

[0029] Figure 6 is a schematic diagram of the coordination of the charging bracket and the battery pack provided in the fourth embodiment of the present invention;

[0030] Figure 7 is a schematic diagram of the structure of a charging bracket provided in a fourth embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the first positioning column or the second positioning column in the charging bracket provided in the fourth embodiment of the present invention.

[0032] In the figure:

[0033] 100, battery pack; 101, first positioning guide sleeve; 102, second positioning guide sleeve;

[0034] 1. Support frame; 2. Electrical connection mechanism; 3. First positioning column; 4. Second positioning column; 5. Limiting member; 6. Buffer pad; 7. Position sensor;

[0035] 31. Supporting part; 32. Tip part; 33. Connecting part; 34. Fixing part; 35. Weight-reducing notch. DETAILED DESCRIPTION

[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0040] Embodiment 1

[0041] This embodiment provides a charging stand, such as Figure 1-Figure 2 As shown, it is used for charging the battery pack 100. The charging bracket includes a fixed seat, a support frame 1, and an electrical connection mechanism 2. The support frame 1 is arranged on the fixed seat. The fixed seat specifically includes four columns, and the four columns serve as legs to jointly support the support frame 1 to support the support frame 1. The support frame 1 is a frame structure with a light weight. The support frame 1 is used to carry the battery pack 100 to ensure that the battery pack 100 has good supporting strength during the charging process. It should be noted that the existing battery pack is generally a plurality of battery cells electrically connected together to form an integral battery pack, which is completely different from the structure of the battery pack 100 provided in the embodiment and the existing battery pack. The battery pack 100 of this embodiment is correspondingly provided with an electrical connector at its bottom, and an electrical connection mechanism 2 is provided on the support frame 1. The electrical connection mechanism 2 is specifically a connector. The electrical connector of the battery pack 100 and the connector of the charging bracket cooperate and plug with each other, thereby completing the charging process of the battery pack 100.

[0042] When the size and volume of the battery pack 100 are large, the operator needs to use lifting equipment to lift the battery pack 100 to the top of the support frame 1. However, a large position deviation is likely to occur between the electrical connector of the battery pack 100 and the electrical connection mechanism 2, resulting in poor electrical contact and affecting the charging effect.

[0043] To solve this problem, Figure 1-Figure 2 As shown, the charging bracket also includes a first positioning column 3, which is arranged on the support frame 1, and the support frame 1 plays a bearing role. The extension direction of the first positioning column 3 is a vertical direction to ensure that the extension direction is the same as the hoisting direction. A first positioning guide sleeve 101 is respectively arranged at the bottom of the battery pack 100, and the first positioning column 3 corresponds to the first positioning guide sleeve 101.

[0044] like Figure 3 As shown, the first positioning column 3 includes a support portion 31 and a tip portion 32. The support portion 31 is arranged on the support frame 1, and the tip portion 32 is arranged on the top of the support portion 31. The support portion 31 is used to carry the tip portion 32. The tip portion 32 and the support portion 31 pass through the first positioning guide sleeve 101 in sequence. The tip portion 32 is configured to be inserted into the first positioning guide sleeve 101 and slide with it, and is used for rough positioning of the battery pack 100. The support portion 31 is configured to be inserted into the first positioning guide sleeve 101 and slide with it, and is used for fine alignment of the battery pack 100, so that the battery pack 100 can be electrically connected to the electrical connection mechanism 2.

[0045] In the charging bracket provided in this embodiment, there is a large gap between the tip portion 32 and the inner wall of the first positioning guide sleeve 101, so that the tip portion 32 has a large range of movement in the first positioning guide sleeve 101, which facilitates the tip portion 32 to pass through the first positioning guide sleeve 101 first. By setting the tip portion 32, it is used for the rough positioning of the battery pack 100, and the initial pre-positioning effect is achieved. If only the tip portion 32 exists, although it can ensure that the tip portion 32 can quickly slide into the first positioning guide sleeve 101, the gap between the two is large, resulting in a poor positioning effect. Therefore, the tip portion 32 and the support portion 31 are directly connected to facilitate the transition between the tip portion 32 and the support portion 31, and the inner walls of the support portion 31 and the first positioning guide sleeve 101 can cooperate with each other. The first positioning guide sleeve 101 plays a guiding role for the support portion 31, and is used for the precise alignment of the battery pack 100, ensuring the positioning of the support portion 31 and the first positioning guide sleeve 101. That is, only one first positioning column 3 is needed to simultaneously realize the combination of coarse alignment and fine alignment, thereby achieving a dual positioning effect of the battery pack 100 with good positioning accuracy, ensuring good electrical connection reliability and charging stability between the battery pack 100 and the electrical connection mechanism 2.

[0046] It can be understood that although positioning can be achieved by using only one first positioning column 3, in order to further ensure the positioning effect, preferably, the number of first positioning columns 3 can be multiple, and the upper ends of multiple first positioning columns 3 are maintained on a horizontal plane, so that multiple first positioning columns 3 can be inserted into the first positioning guide sleeve 101 one by one at the same time, with good consistency.

[0047] Furthermore, if Figure 3 As shown, the outer diameter of the support portion 31 is larger than the outer diameter of the tip portion 32. The larger support portion 31 is equivalent to the base, and the support strength of the support portion 31 is good. The smaller tip portion 32 is equivalent to the insertion needle. After the first positioning column 3 and the first positioning guide sleeve 101 are in contact, the outer diameter of the tip portion 32 is gradually reduced in the direction away from the support portion 31, so that the first positioning guide sleeve 101 can be guided to move in the direction close to the support portion 31. The gradual transition method is adopted to ensure the smoothness and convenience of the guide.

[0048] Preferably, in this embodiment, the support portion 31 is a columnar structure, and the outer diameter of the tip portion 32 gradually decreases in the direction away from the support portion 31, so that the appearance of the entire first positioning column 3 is similar to a bullet head structure. While ensuring the supporting effect, it is also convenient to introduce the first positioning column 3 into the interior of the first positioning guide sleeve 101.

[0049] Preferably, a weight-reducing notch 35 is provided on the support portion 31, and the weight-reducing notch 35 reduces the weight of the first positioning column 3 to meet the requirement of lightweight. The weight-reducing notch 35 can be provided only on the support portion 31, or can extend from the outer wall of the tip portion 32 to the support portion 31 and penetrate the support portion 31, which is equivalent to extending the height of the weight-reducing notch 35 in the vertical direction, further improving the degree of weight reduction.

[0050] It should be noted that, in the specific processing, the weight-reducing notch 35 is formed by cutting at the outer wall position of the support portion 31 or the tip portion 32 and along the axial direction thereof, which is simple in process and convenient to use. At the same time, even if a part is cut off, the remaining support portion 31 retains the curvature of the outer shape and does not affect the positioning and guiding effect between the first positioning guide sleeve 101. In other words, the principle of setting the weight-reducing notch 35 is that it cannot affect the positioning function of the corresponding positioning column.

[0051] After the first positioning column 3 is used to complete the positioning and guiding, if the distance between the electrical connector of the battery pack 100 and the electrical connection mechanism 2 is too small, damage may be caused. In order to solve this problem, Figure 1 As shown, a limiter 5 is provided on the electrical connection mechanism 2, and the top surface of the limiter 5 is used to limit the battery pack 100. The top surface of the limiter 5 protrudes from the surface of the electrical connection mechanism 2. When the battery pack 100 is hoisted and dropped, it will first contact the limiter 5. The limiter 5 plays a role of blocking, and its main purposes are two: first, to avoid rigid impact between the electrical connector of the battery pack 100 and the electrical connection mechanism 2, and extend the service life; second, to prevent the electrical connector of the battery pack 100 from being not connected in place due to excessive plugging and unplugging force, thereby ensuring the reliability of the electrical connection between the battery pack 100 and the charging bracket.

[0052] Furthermore, the limiter 5 is configured to be inserted through the electrical connection mechanism 2 and can adjust the distance between the limiter 5 and the battery pack 100. Compared with the existing limiter which is a fixed structure, the limiter 5 is a movable structure. The limiter 5 is inserted through the electrical connection mechanism 2 and can adjust the height of the limiter 5 extending from the top surface of the electrical connection mechanism 2, so as to adapt to battery packs 100 of different sizes and types, and has strong versatility. The limiter 5 is specifically a bolt, and the height adjustment of the nut is achieved by screwing and loosening, and the adjustment process is simple and easy to use.

[0053] Furthermore, if Figure 1 As shown, the charging bracket further includes a buffer pad 6, which can be made of a buffer material such as rubber, one side of which is arranged on the top surface of the support frame 1, and the other side of which can abut against the bottom of the battery pack 100. By arranging the buffer pad 6 on the top surface of the support frame 1, the support frame 1 and the battery pack 100 are in flexible contact, avoiding a hard collision between the battery pack 100 and the support frame 1, thereby reducing damage to various components.

[0054] It is understandable that the number of buffer pads 6 can be multiple. In this embodiment, the preferred number of buffer pads 6 is six, forming two rows and three columns distributed on the top surface of the support frame 1 to protect and buffer a large area of ​​the bottom of the battery pack 100.

[0055] Furthermore, if Figure 1 As shown, the charging bracket also includes a position sensor 7, which is arranged on the support frame 1 and is used to detect the position of the battery pack 100. The position sensor 7 can detect the position of the battery pack 100, and then charge it after detecting that it is in place, further ensuring the accuracy of the charging position of the battery pack 100, so as to improve the effectiveness and accuracy of charging.

[0056] This embodiment also provides a battery swap station, including a charger and the above-mentioned charging bracket, the charger is electrically connected to the electrical connection mechanism 2 of the charging bracket to provide electrical energy to the charging bracket, thereby ensuring the charging effect of the battery pack 100.

[0057] Embodiment 2

[0058] The difference between this embodiment and the first embodiment is only the specific structure of the first positioning column 3, and the same parts are not repeated here. Figure 4 As shown, the support portion 31 in the first positioning column 3 provided in this embodiment is no longer a columnar structure, and the outer diameter of the support portion 31 gradually decreases in the direction close to the tip portion 32, thereby increasing the transition range. The tip portion 32 is no longer a conical structure, but a columnar structure. This is equivalent to the column and the cone in the first embodiment being exactly opposite. In this way, the support portion 31 can better transition to the tip portion 32, ensuring that the first positioning column 3 and the first positioning guide sleeve can be smoothly introduced with good smoothness.

[0059] Embodiment 3

[0060] The difference between this embodiment and the second embodiment is only the specific structure of the first positioning column 3, and the same parts are not repeated here. Figure 5 As shown, the outer diameter of the support portion 31 in the first positioning column 3 provided in this embodiment gradually decreases in the direction close to the tip portion 32, and the outer diameter of the tip portion 32 gradually decreases in the direction away from the support portion 31. Optionally, the tip portion 32 and the support portion 31 can be integrally formed to form a conical structure. Compared with the second embodiment, this embodiment avoids the step between the support portion 31 and the tip portion 32 that affects the introduction effect, so that a smooth transition can be made directly from the bottom of the support portion 31 to the top of the tip portion 32.

[0061] Embodiment 4

[0062] Compared with the first embodiment, the charging bracket provided in this embodiment is different only in the number and arrangement of the positioning columns. Figure 6-Figure 7 As shown, the charging bracket provided in this embodiment also includes a second positioning column 4. The first positioning column 3 and the second positioning column 4 are respectively arranged on the support frame 1, and the support frame 1 plays the role of bearing the two positioning columns. The extension direction of the first positioning column 3 and the second positioning column 4 are both vertical directions to ensure that the extension direction is the same as the lifting direction. The first positioning guide sleeve 101 and the second positioning guide sleeve 102 are respectively arranged at the bottom of the battery pack 100. The first positioning column 3 corresponds to the first positioning guide sleeve 101, and the second positioning column 4 corresponds to the second positioning guide sleeve 102. The first positioning column 3 and the second positioning column 4 are arranged in parallel and spaced apart to provide accommodation space for the first positioning guide sleeve 101 and the second positioning guide sleeve 102 to avoid interference between the first positioning guide sleeve 101 and the second positioning guide sleeve 102.

[0063] The distance that the second positioning column 4 protrudes from the top surface of the support frame 1 is smaller than the distance that the first positioning column 3 protrudes from the top surface of the support frame 1. The first positioning column 3 is configured to be inserted into the first positioning guide sleeve 101 and slideably cooperate with it, and is used for coarse positioning of the battery pack 100. The second positioning column 4 is configured to be inserted into the second positioning guide sleeve 102 and slideably cooperate with it, and is used for fine alignment of the battery pack 100, so that the battery pack 100 can be electrically connected to the electrical connection mechanism 2.

[0064] The charging bracket provided in this embodiment has the second positioning column 4 protruding from the top surface of the support frame 1 at a distance smaller than the first positioning column 3 protruding from the top surface of the support frame 1. When the battery pack 100 is hoisted in the direction close to the support frame 1, the distance between the battery pack 100 and the top of the first positioning column 3 is relatively close, and the distance between the battery pack 100 and the top of the second positioning column 4 is relatively far, that is, the battery pack 100 first contacts the first positioning column 3, and the first positioning column 3 is inserted into the first positioning guide sleeve 101 and slides with it, playing a guiding role to achieve rough positioning in the initial state. As the battery pack 100 moves downward, the battery pack 100 contacts the second positioning column 4, and the second positioning column 4 is inserted into the second positioning guide sleeve 102 and slides with it, playing a guiding role to achieve fine positioning of the battery pack 100. The combination of rough alignment and fine alignment is adopted to achieve the dual positioning effect of the battery pack 100, with good positioning accuracy, ensuring good electrical connection reliability between the battery pack 100 and the electrical connection mechanism 2, and good charging stability.

[0065] Among them, Figure 7 As shown, there are multiple second positioning posts 4, which are arranged around the electrical connection mechanism 2 and are correspondingly passed through multiple second positioning guide sleeves 102, so as to ensure the positioning accuracy around the electrical connection mechanism 2. In this embodiment, the number of second positioning posts 4 is preferably four, and the four second positioning posts 4 are respectively arranged at the four corners of the electrical connection mechanism 2, and the four second positioning posts 4 are correspondingly passed through the four second positioning guide sleeves 102, so that the electrical connection mechanism 2 and the battery pack 100 are accurately aligned.

[0066] There are multiple first positioning columns 3, which are arranged around multiple second positioning columns 4 and are correspondingly passed through multiple first positioning guide sleeves 101 to ensure the positioning effect of other parts of the support frame 1 except for the electrical connection mechanism 2. In this embodiment, the number of first positioning columns 3 is preferably six, of which two first positioning columns 3 are respectively arranged on both sides of the support frame 1 along the length direction, and the other four first positioning columns 3 correspond to the four corners of the electrical connection mechanism 2 and are arranged around the four second positioning columns 4, so that the outer circle of the electrical connection mechanism 2 is the first positioning column 3, and the inner circle is the second positioning column 4. The positioning effect is further improved by using a double-circle positioning column combination.

[0067] If the outer diameter of each positioning column and the inner diameter of the corresponding positioning guide sleeve are not much different, although the positioning column can eventually pass through the corresponding positioning guide sleeve, it is necessary to strictly ensure that the centers of the two are aligned during the insertion process, which greatly increases the difficulty of the lifting process, resulting in a long alignment time and affecting production efficiency.

[0068] To this end, the first positioning column 3 and the second positioning column 4 provided in this embodiment have similar shapes and structures, such as Figure 8As shown, the first positioning post 3 and the second positioning post 4 both include a supporting portion 31 and a tip portion 32 .

[0069] Wherein, D1 is the inner diameter of the first positioning guide sleeve 101, D2 is the inner diameter of the second positioning guide sleeve 102, d1 is the outer diameter of the support portion 31 of the first positioning column 3, d2 is the outer diameter of the support portion 31 of the second positioning column 4, d3 is the outer diameter of the tip portion 32 of the first positioning column 3, and d4 is the outer diameter of the tip portion 32 of the second positioning column 4. It satisfies D1>D2≥d2, D1≥d1>d2, d1>d3>d4, d2>d4.

[0070] The inner diameter D1 of the first positioning guide sleeve 101 is larger than the inner diameter D2 of the second positioning guide sleeve 102, and the movable space provided by the first positioning guide sleeve 101 is larger than the movable space provided by the second positioning guide sleeve 102, so that the time taken by the first positioning column 3 to locate the first positioning guide sleeve 101 is less than the time taken by the second positioning column 4 to locate the second positioning guide sleeve 102, thereby facilitating the completion of the initial rough positioning.

[0071] It can be understood that the inner diameter D1 of the first positioning guide sleeve 101 is larger than the inner diameter D2 of the second positioning guide sleeve 102, the first positioning guide sleeve 101 corresponds to the first positioning column 3, and the second positioning guide sleeve 102 corresponds to the second positioning column 4. In order to ensure that the positioning column and the corresponding positioning guide sleeve are compatible, the corresponding parts of the first positioning column 3 and the second positioning column 4 are larger than the relevant parts of the second positioning column 4, that is, the outer diameter d1 of the support portion 31 of the first positioning column 3 is larger than the outer diameter d2 of the support portion 31 of the second positioning column 4, and the outer diameter d3 of the tip portion 32 of the first positioning column 3 is larger than the outer diameter d4 of the tip portion 32 of the second positioning column 4.

[0072] Furthermore, the outer diameter of the support portion 31 gradually decreases in the direction away from the support frame 1, and the outer diameter of the tip portion 32 gradually decreases in the direction away from the support portion 31, so that the shape of the entire positioning column is similar to a conical structure. In other words, the outer diameter d1 of the support portion 31 of the first positioning column 3 is greater than the outer diameter d3 of the tip portion 32 of the first positioning column 3, and the outer diameter d2 of the support portion 31 of the second positioning column 4 is greater than the outer diameter d4 of the tip portion 32 of the second positioning column 4.

[0073] After the positioning column and the corresponding positioning guide sleeve contact, the outer diameter of the tip portion 32 is gradually reduced in the direction away from the support portion 31, so that the positioning guide sleeve can be guided to move in the direction close to the support portion 31, and a gradual transition method is adopted to ensure the smoothness and convenience of the guidance. After completing the primary guidance formed by the tip portion 32, the outer diameter of the support portion 31 is gradually reduced in the direction away from the support frame 1, so that the positioning guide sleeve can be guided to move in the direction close to the support frame 1, and a gradual transition method is adopted to ensure the smoothness and convenience of the guidance, so as to complete the secondary guidance process of the positioning guide sleeve.

[0074] It is understandable that the support portion 31 and the tip portion 32 can be directly connected, and the two form a conical structure. In order to ensure that the positioning column can further improve the guiding and positioning effect under the premise of the same height, a connecting portion 33 is provided between the support portion 31 and the tip portion 32, and the connecting portion 33 is a columnar structure. The connecting portion 33 plays the role of intermediate connection while also playing the role of transition between the tip portion 32 and the support portion 31, so as to facilitate the positioning guide sleeve to adjust the position at this position. Optionally, a fixing portion 34 is provided at the bottom of the support portion 31, that is, the fixing portion 34 is provided between the support portion 31 and the support frame 1, and the fixing portion 34 is a columnar structure. The fixing portion 34 plays the role of intermediate connection while also playing the role of transition between the support portion 31 and the support frame 1. The outer diameter of the fixing portion 34 is the same as the maximum outer diameter of the support portion 31, which is equivalent to extending the interaction time of the positioning guide sleeve and the positioning column when the gap between the two is the smallest, thereby improving the accuracy of positioning.

[0075] Since the inner diameter of the first positioning guide sleeve 101 is larger than the inner diameter of the second positioning guide sleeve 102, the distance between the center of the second positioning guide sleeve 102 and the edge of the battery pack 100 is smaller than the distance between the center of the first positioning guide sleeve 101 and the edge of the battery pack 100. At this time, the center of the second positioning column 4 needs to be moved outward relative to the center of the first positioning column 3. The weight-reducing notch 35 is used as a planar structure as the installation plane. While facilitating the installation of the cylindrical or conical structure, it also plays a role of avoidance, so as to achieve the purpose of moving the center of the second positioning column 4 outward relative to the center of the first positioning column 3.

[0076] In the description herein, it should be understood that the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0077] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0078] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A charging stand for charging a battery pack (100), characterized in that: The charging bracket comprises: Fixed seat; A support frame (1) is arranged on a fixing seat, and the support frame (1) is a frame structure and is used to carry the battery pack (100); a first positioning column (3), the first positioning column (3) comprising a support portion (31) and a tip portion (32), the support portion (31) being arranged on the support frame (1), and the tip portion (32) being arranged on the top of the support portion (31); a first positioning guide sleeve (101) being arranged at the bottom of the battery pack (100), the first positioning column (3) being configured to be inserted into the first positioning guide sleeve (101) and to be slidably matched therewith, for coarse positioning of the battery pack (100); A second positioning column (4), wherein the second positioning column (4) is arranged on the support frame (1), and the extension direction of the first positioning column (3) and the second positioning column (4) are both vertical directions to ensure that the extension direction is the same as the lifting direction; a second positioning guide sleeve (102) is also arranged at the bottom of the battery pack (100), the first positioning column (3) corresponds to the first positioning guide sleeve (101), and the second positioning column (4) corresponds to the second positioning guide sleeve (102), and the first positioning column (3) and the second positioning column (4) are arranged in parallel and spaced apart to provide a holding space for the first positioning guide sleeve (101) and the second positioning guide sleeve (102), so as to avoid interference between the first positioning guide sleeve (101) and the second positioning guide sleeve (102); An electrical connection mechanism (2) is arranged on the support frame (1), and the battery pack (100) is electrically connected to the electrical connection mechanism (2); The distance that the second positioning column (4) protrudes from the top surface of the support frame (1) is smaller than the distance that the first positioning column (3) protrudes from the top surface of the support frame (1), and the second positioning column (4) is configured to be inserted into the second positioning guide sleeve (102) and slidably cooperate with it, and is used for precise alignment of the battery pack (100), so that the battery pack (100) can be electrically connected to the electrical connection mechanism (2); The first positioning post (3) and the second positioning post (4) are similar in appearance and structure, and the second positioning post (4) also comprises a supporting portion (31) and a tip portion (32); The outer diameter of the support portion (31) is greater than the outer diameter of the tip portion (32); The outer radial direction of the tip portion (32) gradually decreases in a direction away from the support portion (31); The outer diameter of the support portion (31) gradually decreases in a direction approaching the tip portion (32); a connecting portion (33) is provided between the support portion (31) and the tip portion (32), the connecting portion (33) is a columnar structure; a fixing portion (34) is provided at the bottom of the support portion (31), the fixing portion (34) is provided between the support portion (31) and the support frame (1), and the fixing portion (34) is a columnar structure.

2. The charging stand according to claim 1, characterized in that: A weight-reducing notch (35) is provided on the first positioning column (3).

3. The charging stand according to claim 1, characterized in that: A limiting member (5) is provided on the electrical connection mechanism (2), and the top surface of the limiting member (5) is used for limiting the position of the battery pack (100).

4. The charging stand according to claim 3, characterized in that: The limiting member (5) is configured to penetrate the electrical connection mechanism (2) and be capable of adjusting the distance between the limiting member and the battery pack (100).

5. The charging stand according to claim 1, characterized in that: It also includes a buffer pad (6), one side of which is arranged on the top surface of the support frame (1), and the other side of which can abut against the bottom of the battery pack (100).

6. The charging stand according to claim 1, characterized in that: It also includes a position sensor (7), which is arranged on the support frame (1) and is used to detect the position of the battery pack (100).

7. A battery swap station, characterized in that: It comprises a charger and a charging stand as claimed in any one of claims 1 to 6, wherein the charger is electrically connected to an electrical connection mechanism (2) of the charging stand.

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