Replacing and replacing structure of battery pack

Abstract

According to the replaceable battery pack replacement structure, in the structure, a mounting panel is detachably connected with a replaceable battery pack box body; the socket terminal is fixed on the mounting panel, and the socket terminal comprises a contact pin extending towards the battery pack; the battery pack internal bracket is fixed in the battery pack; the battery pack quick-plug electrode is fixed on the battery pack internal bracket and is aligned with the contact pin; one end of the socket adapter wire harness is fixedly connected with the battery pack quick-plug electrode through a socket adapter wire harness bolt, and the other end of the socket adapter wire harness is connected with the battery control panel or the positive and negative electrodes of the battery through an electrode mounting bolt. According to the structure, the space utilization rate and the electric connection safety and reliability of a main circuit in the battery pack are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery swapping for low-speed electric vehicles, in particular to a disassembly and replacement structure for a battery swapping battery pack. Background Technique

[0002] With the increasing demand for solving the last-mile material delivery in express delivery, logistics, takeout, etc., the lead-acid batteries or lithium batteries with poor performance commonly used in low-speed electric vehicles can no longer meet the needs of vehicle owners for longer battery life and greater load capacity. Especially at the present stage, with the popularization of battery swapping cabinets, considering the usage cost, a unified and standardized battery is more needed, and a battery swapping battery pack with high-power charge and discharge capabilities can better accommodate all electric two-wheelers, three-wheelers or four-wheelers.

[0003] The external plug of the vehicle or the battery swapping cabinet and the mating socket at the battery pack end are vulnerable parts due to high-frequency use, and a high-voltage and low-voltage connection form that is easy to disassemble and replace needs to be designed. The existing battery swapping battery packs usually have a "pin" - shaped discharge interface without communication and a "2 + 6" charging interface with 485 communication. Due to the small power, the current-carrying capacity of the plugs, socket terminals and wire harnesses of this type is small, and simple and convenient replacement can be achieved, but it is not suitable for the increasingly demanding high-power battery packs. Because the wire harness cables for high-power battery packs with large currents are thick and hard, if the above-mentioned scheme is still used, it will lead to difficult installation and disassembly and a safety risk of electrical failure, and it is difficult to force the redundant wire harness into the gap of the battery box after closing the upper cover of the battery swapping battery pack. For high power and large current, screw-connected cold-pressed terminals must be used for electrical connection, and the tin soldering electrical connection fixing method is no longer reliable. This leads to the requirement that the installation surface restricting the screw-connected cold-pressed terminals must be parallel to the upper cover of the battery swapping battery pack in order to operate with a screwdriver during disassembly and replacement. This greatly limits the design flexibility of the internal structure of the battery pack, especially the design of the electrical connection installation surface.

[0004] The above information disclosed in the background section is only used to enhance the understanding of the background of the utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a disassembly and replacement structure for a battery swapping battery pack. For the thick and hard large-current wire harness used in high-power battery packs, this structure does not require excessive redundancy. When installing the upper cover, there is no need to force the redundant large-current wire harness into the gap of the battery box, thus avoiding difficult installation and disassembly and a safety risk of electrical failure. It does not limit the design flexibility of the internal structure of the battery pack, especially the design of the electrical connection installation surface of the battery control board. At the same time, it can achieve "opening the cover" to disconnect the electrical connection, and after replacing the corresponding socket or terminal, "closing the cover" to connect the electrical connection, achieving rapid disassembly and replacement to the greatest extent.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a battery pack replacement structure, which includes:

[0008] The mounting panel is detachably connected to the battery pack housing.

[0009] A socket terminal, which is fixed to the mounting panel, the socket terminal including pins extending toward the battery pack;

[0010] The internal support frame of the battery pack is fixed inside the battery swapping box;

[0011] A quick-connect electrode for the battery pack, which is fixed to the internal support of the battery pack and aligned with the pins;

[0012] The socket adapter harness has one end fastened to the quick-connect electrode of the battery pack via socket adapter harness bolts, and the other end connected to the battery control board or the positive and negative terminals of the battery via electrode mounting bolts.

[0013] In the battery pack swapping structure, the quick-connect electrode of the battery pack includes a first part and a second part that are spaced apart and opposite each other. The first part includes a first arcuate protrusion facing the second part, and the second part includes a second arcuate protrusion facing the first part.

[0014] In the aforementioned battery pack swapping structure, the first and second arc protrusions are symmetrically distributed.

[0015] In the battery pack swapping structure described above, the maximum distance between the first arc protrusion and the second arc protrusion is greater than the diameter of the pin, and the minimum distance between the first arc protrusion and the second arc protrusion is less than the diameter of the pin.

[0016] In the aforementioned battery pack swapping structure, the first or second part is provided with a connector for connecting the socket adapter harness bolt.

[0017] In the aforementioned battery pack swapping structure, the socket adapter harness has rings at both ends.

[0018] In the aforementioned battery pack swapping structure, the mounting panel is the battery pack cover.

[0019] In the aforementioned battery pack swapping structure, the socket terminals are covered by the socket housing on the mounting panel.

[0020] In the aforementioned battery pack swapping structure, the socket housing is connected to the mounting panel via bolts.

[0021] In the aforementioned battery pack swapping structure, the socket terminals are arranged perpendicular to the mounting panel.

[0022] In the above technical solution, the battery pack replacement structure provided by this utility model has the following beneficial effects: the battery pack replacement structure can reduce the space occupied by redundant wiring harnesses, and compared with the prior art, it can save more layout space in the battery pack and improve space utilization; it can also improve the electrical connection safety and reliability of the main circuit in the battery pack, and avoid the electrical connection points caused by the redundancy of wiring harnesses being subjected to potential skew stress and loosening; it does not restrict the orientation of the positive and negative terminal mounting surfaces of the battery control board inside the battery pack, and can realize "removing the cover" to disconnect the power connection, and after replacing the corresponding socket or terminal, "closing the cover" to connect the power connection, so as to achieve rapid replacement to the greatest extent. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the battery pack replacement structure of this utility model.

[0025] The markings in the attached diagram are as follows: 1. Socket housing; 2. Socket terminal; 3. Mounting panel; 4. Bolt; 5. Socket adapter harness; 6. Electrode mounting bolt; 7. Battery pack internal support; 8. Battery pack quick-connect electrode; 9. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, in one embodiment, the battery pack swapping structure of this utility model includes,

[0031] Mounting panel 3 is detachably connected to the battery pack housing;

[0032] A socket terminal 2, which is fixed to the mounting panel 3, the socket terminal 2 including pins extending toward the battery pack;

[0033] The internal support frame 8 of the battery pack is fixed inside the battery swapping box.

[0034] The battery pack quick-connect electrode 9 is fixed to the internal support 8 of the battery pack and aligned with the pins;

[0035] The socket adapter harness 5 has one end fastened to the battery pack quick-connect electrode 9 via the socket adapter harness bolt 6, and the other end connected to the battery control board or the positive and negative terminals of the battery via the electrode mounting bolt 7.

[0036] In a preferred embodiment of the battery pack swapping structure, the quick-connect electrode 9 of the battery pack includes a first part and a second part spaced apart and opposite to each other. The first part includes a first arcuate protrusion facing the second part, and the second part includes a second arcuate protrusion facing the first part.

[0037] In a preferred embodiment of the battery pack swapping structure, the first and second arc protrusions are symmetrically distributed.

[0038] In a preferred embodiment of the battery pack replacement structure, the maximum distance between the first arc protrusion and the second arc protrusion is greater than the diameter of the pin, and the minimum distance between the first arc protrusion and the second arc protrusion is less than the diameter of the pin.

[0039] In a preferred embodiment of the battery pack swapping structure, the first or second part is provided with a connector for connecting the socket adapter harness bolt 6.

[0040] In a preferred embodiment of the battery pack swapping structure, the socket adapter harness 5 has rings at both ends.

[0041] In a preferred embodiment of the battery pack swapping structure, the mounting panel 3 is the top cover of the battery pack.

[0042] In a preferred embodiment of the battery pack swapping structure, the socket terminal 2 is covered by the socket housing 1 on the mounting panel 3.

[0043] In a preferred embodiment of the battery pack replacement structure, the socket housing 1 is connected to the mounting panel 3 via bolts 4.

[0044] In a preferred embodiment of the battery pack swapping structure, the socket terminal 2 is arranged perpendicular to the mounting panel 3.

[0045] In one embodiment, the pins of the socket terminal 2 inside the battery pack make full contact with the quick-connect electrode 9 of the battery pack to achieve electrical connection. The quick-connect electrode 9 of the battery pack is fixed to the internal support 8 of the battery pack by riveting, screwing, or other means. The quick-connect electrode 9 of the battery pack and the socket adapter harness 5 achieve electrical conduction through the socket adapter harness bolts 6 or by direct "spinning," and are finally installed and tightened to the positive and negative terminals of the battery pack by the electrode mounting bolts 7.

[0046] In one embodiment, such as Figure 1 As shown, the quick-connect electrode 9 of the battery pack and the internal support 8 of the battery pack are pre-connected together as a whole part by means of riveting, screwing or other methods; the socket terminal 2 and the socket housing 1 are pre-connected as a whole by metal "plastic" or assembly clamping; the socket housing 1 and the mounting panel 3 are pre-connected and fastened together as a whole part by bolts.

[0047] When installing and assembling the battery pack for low-speed electric vehicles, first use the electrode mounting bolt 7 to securely screw one end of the socket adapter harness 5 to the battery control board or the positive and negative terminals of the battery. Then, screw the other end of the socket adapter harness 5 to the battery pack quick-connect electrode 9 using the socket adapter harness bolt 6 to secure it as a whole. Alternatively, the battery pack quick-connect electrode 9 can be directly "spinned out". Then, securely install the internal bracket 8 of the battery pack. At this point, all the installation operations inside the battery pack are complete.

[0048] Next is the closing operation. Use the mounting panel 3 and all the fastened parts on it to "close" the battery pack housing. Insert the pins of the socket terminal 2 inside the battery pack into the corresponding flexible holes of the quick-connect electrode 9 of the battery pack to make full contact and achieve electrical connection. Finally, tighten the mounting panel 3 to the battery pack housing with bolts or sealant to complete the assembly operation.

[0049] When replacing, follow the reverse process of the above steps: first remove the cover seal between the mounting panel 3 and the battery pack housing, then pull out the mounting panel 3 and all its components, and then remove the bolts to replace the entire socket housing 1 and socket terminals 2.

[0050] Finally, it should be noted that the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0051] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A battery pack swapping structure, characterized in that, It includes, The mounting panel is detachably connected to the battery pack housing. A socket terminal, which is fixed to the mounting panel, the socket terminal including pins extending toward the battery pack; The internal support frame of the battery pack is fixed inside the battery swapping box; A quick-connect electrode for the battery pack, which is fixed to the internal support of the battery pack and aligned with the pins; The socket adapter harness has one end fastened to the quick-connect electrode of the battery pack via socket adapter harness bolts, and the other end connected to the battery control board or the positive and negative terminals of the battery via electrode mounting bolts.

2. The battery pack swapping structure according to claim 1, characterized in that, The battery pack quick-connect electrode includes a first portion and a second portion spaced apart and opposite to each other. The first portion includes a first arcuate protrusion facing the second portion, and the second portion includes a second arcuate protrusion facing the first portion.

3. The battery pack swapping structure according to claim 2, characterized in that, The first and second circular arc protrusions are symmetrically distributed.

4. The battery pack swapping structure according to claim 2, characterized in that, The maximum distance between the first and second arc protrusions is greater than the diameter of the pin, and the minimum distance between the first and second arc protrusions is less than the diameter of the pin.

5. The battery pack swapping structure according to claim 2, characterized in that, The first or second part is provided with a connector for connecting the socket adapter harness bolt.

6. The battery pack swapping structure according to claim 1, characterized in that, The socket adapter harness has rings at both ends.

7. The battery pack swapping structure according to claim 1, characterized in that, The mounting panel is the cover for the battery pack.

8. The battery pack swapping structure according to claim 1, characterized in that, The socket terminals are covered by the socket housing on the mounting panel.

9. A battery pack swapping structure according to claim 8, characterized in that, The socket housing is bolted to the mounting panel.

10. A battery pack swapping structure according to claim 1, characterized in that, The socket terminals are arranged perpendicular to the mounting panel.

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