Battery pack structure capable of quickly replacing battery cells and mobile power supply

Abstract

The utility model provides a battery pack structure capable of quickly replacing a battery cell and a mobile power supply. The battery pack structure capable of quickly replacing the battery cell comprises an upper cover shell, a shell base, a connecting base and a battery cell assembly, the battery cell assembly is composed of a single battery cell assembly, a polarity connecting terminal assembly, a conductive piece and a circuit board, the single battery cell assembly abuts against the polarity connecting terminal assembly, and the polarity connecting terminal assembly is welded to the circuit board. The polarity connecting terminal assembly comprises a first fixing piece and a second fixing piece which are oppositely arranged, and the two ends of the single cell core assembly abut against the two fixing pieces respectively. According to the battery pack structure, the connection mode that the polar connection terminal assembly abuts against the single battery core assembly and the polar connection terminal assembly is welded to the circuit board is adopted, traditional welding of the battery core and a wire is replaced, the risks of insufficient soldering and unsoldering are reduced, rapid plug-in type disassembly and assembly of the single battery core assembly are achieved, and the assembly efficiency is improved. The convenience and efficiency of battery cell replacement are improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery packs, and in particular to a battery pack structure and mobile power supply with quick-replaceable cells. Background Technology

[0002] Traditional battery pack technology widely uses wire bonding to achieve electrical connections between battery cells. However, with the passage of time and the diversification of usage environments, wire bonding has revealed a series of problems that cannot be ignored.

[0003] During battery pack manufacturing, the complexity of welding processes and the influence of human error make it difficult to ensure that every solder joint achieves the desired welding effect, easily leading to incomplete soldering. Furthermore, during battery pack use, factors such as vibration and temperature changes can cause pre-existing solder joints to detach, severely impacting the normal operation of the battery pack and potentially even causing safety accidents.

[0004] On the other hand, battery packs using wire welding present significant challenges in cell replacement. When a cell in the battery pack malfunctions and needs replacement, the fixed connection method of wire welding makes the process of disassembling and re-welding the cell not only cumbersome but also prone to damaging other cells and circuits, increasing maintenance and time costs and hindering the long-term maintenance and sustainable use of the battery pack. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a battery pack structure and battery pack with quick cell replacement.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A battery pack structure with quick-replacement cells includes an upper cover shell, a cell assembly, a connecting base, and a shell base. The connecting base is fixed to the shell base, and the upper cover shell covers the connecting base. The connecting base has a first receiving cavity, and the upper cover shell has a second receiving cavity. The first receiving cavity communicates with the second receiving cavity, and the cell assembly is housed in the first receiving cavity and the second receiving cavity.

[0008] The battery cell assembly includes a single battery cell sub-assembly, a polarity connection terminal assembly, a conductive element, and a circuit board. The single battery cell sub-assembly is abutted against the polarity connection terminal assembly, the polarity connection terminal assembly is soldered to the circuit board, and the conductive element is connected to the circuit board and located on one side of the circuit board.

[0009] The polarity connection terminal assembly includes a first fixing member and a second fixing member, both of which are soldered to the circuit board. The first fixing member and the second fixing member are disposed opposite to each other. One end of the single cell assembly abuts against the first fixing member, and the other end of the single cell assembly abuts against the second fixing member.

[0010] In one embodiment, the first fixing member has a first fixing slot, the second fixing member has a second fixing slot, one end of the single battery cell assembly passes through the first fixing slot, and the other end of the single battery cell assembly passes through the second fixing slot.

[0011] In one embodiment, the polarity connection terminal assembly further includes a first limiting member and a second limiting member, the first limiting member being connected to the end face of the first fixing member opposite to the end face of the second fixing member, the second limiting member being connected to the end face of the second fixing member opposite to the end face of the first fixing member, a portion of the first limiting member being located in the first fixing through groove, and a portion of the second limiting member being located in the second fixing through groove.

[0012] In one embodiment, the area of ​​the cross-section of the first fixed through groove is the same as the area of ​​the cross-section of the second fixed through groove, and the centerline of the first fixed through groove coincides with the centerline of the second fixed through groove.

[0013] In one embodiment, the vertical distance between the first fixed through slot and the end face of the first limiting member and the vertical distance between the second fixed through slot and the end face of the second limiting member are both greater than or equal to the length of the single cell assembly.

[0014] In one embodiment, both the first fixing through groove and the second fixing through groove are circular through grooves.

[0015] In one embodiment, there are multiple first limiting members and multiple second limiting members. The multiple first limiting members are respectively spaced apart on the end face of the first fixing member opposite to the second fixing member, and the multiple second limiting members are respectively spaced apart on the end face of the second fixing member opposite to the first fixing member.

[0016] In one embodiment, there are multiple individual battery cell components and multiple polarity connection terminal components, each individual battery cell component is connected to one polarity connection terminal component, and each polarity connection terminal component is soldered to the circuit board at intervals.

[0017] In one embodiment, the connecting base is further provided with a first positioning through groove, the first positioning through groove is connected to the first receiving cavity, and the circuit board abuts against the first positioning through groove.

[0018] This application also provides a portable power bank, including the battery pack structure with quickly replaceable cells as described in any embodiment.

[0019] Compared with the prior art, this disclosure has at least the following advantages:

[0020] 1. The aforementioned battery pack structure with quickly replaceable cells employs a connection method where polarity connection terminal assemblies abut against individual cell sub-assemblies, and the polarity connection terminal assemblies are soldered to the circuit board. This replaces the traditional soldering of cells to wires, reducing the risk of cold solder joints and desoldering. This enables quick plug-and-play assembly and disassembly of individual cell sub-assemblies, improving the convenience and efficiency of cell replacement, avoiding repetitive soldering processes during replacement, thereby increasing the working efficiency of the battery pack structure with quickly replaceable cells and reducing its maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a battery pack structure with quick-replacement cells according to one embodiment;

[0023] Figure 2 for Figure 1 The diagram shows a partial exploded view of the battery pack structure with quick-replacement cells.

[0024] Figure 3 for Figure 1 Another exploded view of the battery pack structure with quick-replacement cells shown;

[0025] Figure 4 for Figure 2 The image shows a partial exploded view of the battery cell assembly. Detailed Implementation

[0026] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0030] like Figures 1 to 4 As shown, a battery pack structure 10 with quick-replaceable cells according to an embodiment of the present disclosure includes an upper cover housing 100, a cell assembly 200, a connecting base 300 and a housing base 400. The connecting base 300 is fixed to the housing base 400. The upper cover housing 100 covers the connecting base 300. The connecting base 300 has a first receiving cavity 3001. The upper cover housing 100 has a second receiving cavity 1001. The first receiving cavity 3001 communicates with the second receiving cavity 1001. The cell assembly 200 is housed in the first receiving cavity 3001 and the second receiving cavity 1001.

[0031] The battery cell assembly 200 includes a single battery cell sub-assembly 210, a polarity connection terminal assembly 220, a conductive element 230, and a circuit board 240. The single battery cell sub-assembly 210 abuts against the polarity connection terminal assembly 220, the polarity connection terminal assembly 220 is soldered to the circuit board 240, and the conductive element 230 is connected to the circuit board 240 and located on one side of the circuit board 240.

[0032] The polarity connection terminal assembly 220 includes a first fixing member 221 and a second fixing member 222. Both the first fixing member 221 and the second fixing member 222 are soldered to the circuit board 240. The first fixing member 221 and the second fixing member 222 are arranged opposite to each other. One end of the single cell assembly 210 abuts against the first fixing member 221, and the other end of the single cell assembly 210 abuts against the second fixing member 222.

[0033] In this embodiment, during the assembly of the cell assembly 200, the polarity connection terminal assembly 220 is first soldered onto the circuit board 240. The internal terminals of the polarity connection terminal assembly 220 form an effective electrical connection with the circuit board 240. This eliminates the need for additional wire soldering steps when connecting the individual cell sub-assembly 210 to the polarity connection terminal assembly 220, thereby reducing the risk of poor soldering and desoldering. Consequently, the individual cell sub-assembly 210 and the polarity connection terminal assembly 220 can quickly form a stable electrical connection structure. When the battery pack is working, the electrical energy generated by the individual cell sub-assembly 210 is first transmitted to the polarity connection terminal assembly 220 connected to it. Then, the polarity connection terminal assembly 220 transmits the received electrical energy to the circuit board 240 it is soldered to. The circuit board 240, as the control and distribution center of the entire cell assembly 200, processes and distributes the electrical energy. Then, the electrical energy is output to the connection base 300 through the conductive component 230, and forms a current loop with the outside through the connection base 300.

[0034] Specifically, when it is necessary to replace the individual battery cell assembly 210, since the individual battery cell assembly 210 and the polarity connection terminal assembly 220 are physically connected, unlike the traditional wire soldering method, the individual battery cell assembly 210 can be quickly plugged in and removed. Furthermore, since the polarity connection terminal assembly 220 is soldered to the circuit board 240, the individual battery cell assembly 210 can form a stable electrical connection with the circuit board 240 through the polarity connection terminal assembly 220. This avoids the need for repeated soldering during the replacement of the individual battery cell assembly 210, thereby improving the efficiency of battery cell assembly 200 disassembly and assembly, and reducing the risk of connection failure due to poor soldering during the soldering process.

[0035] The aforementioned battery pack structure 10 with quick-replaceable cells employs a connection method where the polarity connection terminal assembly 220 abuts against the individual cell sub-assembly 210, and the polarity connection terminal assembly 220 is soldered to the circuit board 240. This replaces the traditional soldering of the cell to the wires, reducing the risk of cold solder joints and desoldering. This enables quick plug-and-play installation and removal of the individual cell sub-assembly 210, improving the convenience and efficiency of cell replacement, avoiding repetitive soldering processes during replacement, thereby increasing the working efficiency of the battery pack structure 10 with quick-replaceable cells and reducing its maintenance costs.

[0036] like Figures 2 to 4As shown, in one embodiment, the first fixing member 221 has a first fixing through groove 2201, and the second fixing member 222 has a second fixing through groove 2202. One end of the individual battery cell assembly 210 passes through the first fixing through groove 2201, and the other end of the individual battery cell assembly 210 passes through the second fixing through groove 2202. In this embodiment, when the individual battery cell assembly 210 needs to be installed, one end of it passes through the first fixing through groove 2201 of the first fixing member 221 to achieve preliminary mechanical fixing and electrical contact; similarly, the other end of the individual battery cell assembly 210 passes through the second fixing through groove 2202 of the second fixing member 222 to form mechanical fixing and electrical connection at the other end, thereby ensuring the stability of the individual battery cell assembly 210 in physical position and ensuring a good electrical conduction path between it and the polarity connection terminal assembly 220. Furthermore, when it is necessary to replace the individual battery cell assembly 210, it can be simply pulled out from the first fixing slot 2201 and the second fixing slot 2202 without the need for any tools or complicated disassembly operations, thereby improving the convenience and efficiency of replacing the individual battery cell assembly 210.

[0037] like Figures 2 to 4 As shown, in one embodiment, the polarity connection terminal assembly 220 further includes a first limiting member 223 and a second limiting member 224. The first limiting member 223 is connected to the end face of the first fixing member 221 opposite to the end face of the second fixing member 222, and the second limiting member 224 is connected to the end face of the second fixing member 222 opposite to the end face of the first fixing member 221. A portion of the first limiting member 223 is located within the first fixing through groove 2201, and a portion of the second limiting member 224 is located within the second fixing through groove 2202. In this embodiment, when one end of the single cell assembly 210 passes through the first fixing through groove 2201 of the first fixing member 221, the first limiting member 223 can effectively limit the excessive movement or displacement of the single cell assembly 210 during the insertion process. Similarly, when the other end of the single-cell sub-assembly 210 passes through the second fixing slot 2202 of the second fixing member 222, the second limiting member 224 also plays a similar role, ensuring that the single-cell sub-assembly 210 maintains a stable posture throughout the installation process. Specifically, since part of the first limiting member 223 is located in the first fixing slot 2201 and part of the second limiting member 224 is located in the second fixing slot 2202, the first limiting member 223 and the second limiting member 224 respectively form a tight fit with the corresponding parts of the single-cell sub-assembly 210, thereby preventing the single-cell sub-assembly 210 from shifting due to vibration or external force.

[0038] like Figures 2 to 4As shown, in one embodiment, the cross-sectional area of ​​the first fixed through-slot 2201 is the same as that of the second fixed through-slot 2202, and the centerline of the first fixed through-slot 2201 coincides with the centerline of the second fixed through-slot 2202. In this embodiment, when installing the individual battery cell assembly 210, because the cross-sectional areas of the first fixed through-slot 2201 and the second fixed through-slot 2202 are the same and their centerlines coincide, the two ends of the individual battery cell assembly 210 can be inserted into the corresponding through-slots in a completely symmetrical and fitting manner. This ensures that the individual battery cell assembly 210 is subjected to uniform force during insertion, avoiding additional stress or jamming caused by differences in through-slot size or centerline deviation. When the battery pack is subjected to external impact or vibration, the symmetrical through-slot design allows the individual battery cell assembly 210 to remain in a stable position, thereby avoiding displacement or loosening due to uneven force at both ends.

[0039] like Figures 2 to 4 As shown, in one embodiment, the vertical distance between the end face of the first fixing slot 2201 adjacent to the end face of the first limiting member 223 and the vertical distance between the end face of the second fixing slot 2202 adjacent to the end face of the second limiting member 224 are both greater than or equal to the length of the single battery cell assembly 210. In this embodiment, since the vertical distance between the end face of the first fixing slot 2201 adjacent to the end face of the first limiting member 223 and the vertical distance between the end face of the second fixing slot 2202 adjacent to the end face of the second limiting member 224 are both greater than or equal to the length of the single battery cell assembly 210, it is ensured that the single battery cell assembly 210 can completely abut against the two slots during installation, and there will be no situation where installation is impossible due to the excessive vertical distance between the first fixing slot 2201 and the second fixing slot 2202. When the individual cell assembly 210 fully abuts against the first fixed through slot 2201 and the second fixed through slot 2202, both ends of it are firmly fixed and supported, thereby ensuring a stable connection between the individual cell assembly 210 and the polarity connection terminal assembly 220, and ensuring a good electrical connection between the individual cell assembly 210 and the polarity connection terminal assembly 220.

[0040] like Figures 2 to 4As shown, in one embodiment, both the first fixing slot 2201 and the second fixing slot 2202 are circular slots. In this embodiment, the design of the circular slots can adapt to the outer contour of the individual battery cell assembly 210, especially when the end of the individual battery cell assembly 210 has a cylindrical or near-cylindrical structure. The circular slots improve the ease of installation and ensure a tight fit between the individual battery cell assembly 210 and the polarity connection terminal assembly 220. Specifically, when the individual battery cell assembly 210 needs to be installed, its cylindrical end can accurately and quickly abut against the circular first fixing slot 2201 of the first fixing member 221 and the circular second fixing slot 2202 of the second fixing member 222, so that the individual battery cell assembly 210 is not subjected to unnecessary stress or resistance, thereby ensuring the stability of the installation of the individual battery cell assembly 210.

[0041] like Figures 2 to 4 As shown, in one embodiment, there are multiple first limiting members 223 and multiple second limiting members 224. Multiple first limiting members 223 are spaced apart on the end face of the first fixing member 221 opposite to the end face of the second fixing member 222, and multiple second limiting members 224 are spaced apart on the end face of the second fixing member 222 opposite to the end face of the first fixing member 221. In this embodiment, the arrangement of multiple first limiting members 223 and multiple second limiting members 224 enhances the stability and accuracy of the single-cell sub-assembly 210 during installation. When one end of the single-cell sub-assembly 210 passes through the first fixing slot 2201 of the first fixing member 221, the multiple first limiting members 223 can simultaneously and effectively limit the offset and shaking of the single-cell sub-assembly 210 within the first fixing slot 2201. Similarly, when the other end of the single cell assembly 210 passes through the second fixing slot 2202 of the second fixing member 222, the multiple second limiting members 224 also play a similar role, so that the single cell assembly 210 can maintain a stable state throughout the installation process, improving the accuracy and reliability of the installation, and thus avoiding the problem of the single cell assembly 210 falling off or loosening due to vibration or external force.

[0042] like Figures 2 to 4As shown, in one embodiment, there are multiple individual cell components 210 and polarity connection terminal components 220. Each individual cell component 210 is connected to a corresponding polarity connection terminal component 220, and each polarity connection terminal component 220 is soldered to the circuit board 240 at intervals. In this embodiment, the arrangement of multiple individual cell components 210 improves the overall energy storage capacity of the battery pack. Each individual cell component 210 can independently store and release energy, and since each polarity connection terminal component 220 is fixed to the circuit board 240 by soldering, each individual cell component 210 connected to the polarity connection terminal component 220 can form an independent electrical channel. Multiple individual cell components 210 can be connected in parallel or in series, thereby increasing the total capacity of the battery pack and meeting application scenarios with higher energy demands.

[0043] like ​ As shown, in one embodiment, the connecting base 300 also has a first positioning slot 3002, which communicates with the first receiving cavity 3001. The circuit board 240 abuts against the first positioning slot 3002. In this embodiment, during the installation of the battery pack structure 10 with quick-replaceable cells, the circuit board 240 can abut against the inner wall of the first positioning slot 3002 until it forms a tight connection with the slot, thereby ensuring the positional accuracy of the circuit board 240 in the horizontal and vertical directions and effectively preventing the circuit board 240 from shaking and displacing inside the battery pack. This makes the electrical connection between the circuit board 240 and the polarity connection terminal assembly 220 more reliable and reduces contact problems that may be caused by the shaking of the circuit board 240. In addition, when maintenance is required on the cell assembly 200, the maintenance personnel can remove or reinstall the circuit board 240 from the first positioning slot 3002, thereby improving the convenience and efficiency of maintenance and reducing the difficulty and time cost of maintenance.

[0044] This application also provides a portable power supply, including a battery pack structure 10 with quickly replaceable cells according to any of the above embodiments. In this embodiment, during the assembly of the cell assembly 200, the polarity connection terminal assembly 220 is first soldered onto the circuit board 240, so that the internal power terminals of the polarity connection terminal assembly 220 form an effective electrical connection with the circuit board 240. This eliminates the need for additional wire soldering steps during the connection of the individual cell sub-assembly 210 to the polarity connection terminal assembly 220, thereby reducing the risk of poor soldering and desoldering. Consequently, the individual cell sub-assembly 210 and the polarity connection terminal assembly 220 can quickly form a stable electrical connection structure. When the battery pack is working, the electrical energy generated by the individual cell assembly 210 is first transmitted to the polarity connection terminal assembly 220 connected to it. Then, the polarity connection terminal assembly 220 transmits the received electrical energy to the circuit board 240 soldered to it. The circuit board 240, as the control and distribution center of the entire cell assembly 200, processes and distributes the electrical energy. Then, the electrical energy is output to the connection base 300 through the conductive element 230, and forms a current loop with the outside through the connection base 300. Specifically, when it is necessary to replace the individual battery cell assembly 210, since the individual battery cell assembly 210 and the polarity connection terminal assembly 220 are physically connected, unlike the traditional wire soldering method, the individual battery cell assembly can be quickly plugged and unplugged when soldered to the circuit board 240 210. Furthermore, due to the polarity connection terminal assembly 220, the individual battery cell assembly 210 can form a stable electrical connection with the circuit board 240 through the polarity connection terminal assembly 220, thereby avoiding the repeated soldering process during the replacement of the individual battery cell assembly 210, thus improving the efficiency of battery cell assembly 200 disassembly and assembly, and at the same time reducing the risk of connection failure due to poor soldering during the soldering process.

[0045] Compared with the prior art, this disclosure has at least the following advantages:

[0046] 1. The aforementioned battery pack structure 10 with quick-replaceable cells employs a connection method where the polarity connection terminal assembly 220 abuts against the individual cell sub-assembly 210, and the polarity connection terminal assembly 220 is soldered to the circuit board 240. This replaces the traditional soldering of the cell to the wires, reducing the risk of poor soldering and desoldering. This enables quick plug-and-play installation and removal of the individual cell sub-assembly 210, improving the convenience and efficiency of cell replacement, avoiding repetitive soldering processes during replacement, thereby increasing the working efficiency of the battery pack structure 10 with quick-replaceable cells and reducing its maintenance costs.

[0047] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery pack structure with quick-replacement cells, comprising a top cover, a cell assembly, a connecting base, and a housing base, wherein the connecting base is fixed to the housing base, the top cover covers the connecting base, the connecting base has a first receiving cavity, the top cover has a second receiving cavity, the first receiving cavity communicates with the second receiving cavity, and the cell assembly is housed within the first receiving cavity and the second receiving cavity, characterized in that... The battery cell assembly includes a single battery cell sub-assembly, a polarity connection terminal assembly, a conductive element, and a circuit board. The single battery cell sub-assembly is abutted against the polarity connection terminal assembly, the polarity connection terminal assembly is soldered to the circuit board, and the conductive element is connected to the circuit board and located on one side of the circuit board. The polarity connection terminal assembly includes a first fixing member and a second fixing member, both of which are soldered to the circuit board. The first fixing member and the second fixing member are disposed opposite to each other. One end of the single cell assembly abuts against the first fixing member, and the other end of the single cell assembly abuts against the second fixing member.

2. The battery pack structure with quick-replacement cells according to claim 1, characterized in that, The first fixing member has a first fixing through groove, the second fixing member has a second fixing through groove, one end of the single battery cell assembly passes through the first fixing through groove, and the other end of the single battery cell assembly passes through the second fixing through groove.

3. The battery pack structure with quickly replaceable cells according to claim 2, characterized in that, The polarity connection terminal assembly further includes a first limiting member and a second limiting member. The first limiting member is connected to the end face of the first fixing member opposite to the end face of the second fixing member, and the second limiting member is connected to the end face of the second fixing member opposite to the end face of the first fixing member. A portion of the first limiting member is located in the first fixing through groove, and a portion of the second limiting member is located in the second fixing through groove.

4. The battery pack structure with quick-replacement cells according to claim 2, characterized in that, The cross-sectional area of ​​the first fixed through groove is the same as that of the second fixed through groove, and the centerline of the first fixed through groove coincides with the centerline of the second fixed through groove.

5. The battery pack structure with quick-replacement cells according to claim 3, characterized in that, The vertical distance between the first fixed through slot and the end face of the first limiting member and the vertical distance between the second fixed through slot and the end face of the second limiting member are both greater than or equal to the length of the single cell sub-assembly.

6. The battery pack structure with quick-replacement cells according to claim 2, characterized in that, Both the first fixed through groove and the second fixed through groove are circular through grooves.

7. The battery pack structure with quick-replacement cells according to claim 3, characterized in that, There are multiple first limiting members and multiple second limiting members. The multiple first limiting members are respectively arranged at intervals on the end face of the first fixing member opposite to the second fixing member, and the multiple second limiting members are respectively arranged at intervals on the end face of the second fixing member opposite to the first fixing member.

8. The battery pack structure with quick-replacement cells according to claim 1, characterized in that, There are multiple individual battery cell sub-assemblies and polarity connection terminal assemblies. Each individual battery cell sub-assembly is connected to a corresponding polarity connection terminal assembly, and each polarity connection terminal assembly is soldered to the circuit board at intervals.

9. The battery pack structure with quick-replacement cells according to claim 1, characterized in that, The connecting base is also provided with a first positioning through groove, which is connected to the first receiving cavity, and the circuit board abuts against the first positioning through groove.

10. A portable power bank, characterized in that, This includes a battery pack structure with quick-replaceable cells as described in any one of claims 1 to 9.

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