Oxygen generator and battery box thereof

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses an oxygenerator and a battery box thereof, the battery box comprises a shell with a containing cavity, a conductive terminal and a locking structure are arranged on the outer surface of the shell, the battery box is arranged to move along a first direction to enable the conductive terminal to be electrically connected to a main machine, and the locking structure is arranged on the outer surface of the shell. The battery box and the host are fixed by the locking structure, and the first direction is the height direction of the battery box or the host. The battery box does not need to be provided with guide structures such as a horizontal sliding rail which is used for guiding the battery box to be in sliding joint with the host and keeping the mounting position, so that the occupied space of the oxygen generator is reduced, and the portability and miniaturization of the oxygen generator are facilitated.

Description

Technical Field

[0001] This utility model relates to ventilation therapy equipment, specifically to a battery box. Furthermore, this utility model also relates to an oxygen concentrator including the battery box. Background Technology

[0002] Portable oxygen concentrators, as a novel medical device, offer convenience for people's daily oxygen therapy and health maintenance. Portable oxygen concentrators typically employ the pressure swing adsorption (PSA) principle, using ambient air as raw material. Under normal temperature and low pressure conditions, they utilize the property of molecular sieves that their adsorption capacity for nitrogen (adsorbate) in the air increases when pressurized and decreases when depressurized, forming a rapid cycle of pressurized adsorption and depressurized desorption, thus separating oxygen and nitrogen from the air.

[0003] Portable oxygen concentrators typically come with a battery compartment connected to the main unit, which supplies power to the compressor, intake and exhaust control valves, and other components during use. For ease of installation and maintenance, the battery compartment can be designed to snap onto and lock to the main unit using clips or similar means. However, existing portable oxygen concentrators often require a guide structure, such as a relatively wide horizontal slide rail, on the battery compartment. This guide structure serves two purposes: firstly, it guides the relative movement of the battery compartment to the main unit during installation; secondly, it helps maintain the battery compartment in its mounting position after installation, preventing issues such as electrical connection failure. This guide structure occupies a significant area on the battery compartment surface, which is detrimental to the space integration of the oxygen concentrator. Utility Model Content

[0004] The purpose of this invention is to overcome the space occupation problem caused by the need to set up horizontal guide structures such as slide rails in the battery box of the oxygen concentrator in the existing technology, and to provide a battery box that allows the guide structure on the surface of its shell to be omitted or reduced, which is conducive to the portability and miniaturization of the oxygen concentrator.

[0005] To achieve the above objectives, this utility model provides a battery box, including a housing with a receiving cavity. The outer surface of the housing is provided with conductive terminals and a locking structure. The battery box is configured to move along a first direction so that the conductive terminals are electrically connected to the host, and the locking structure fixes the battery box to the host. The first direction is the height direction of the battery box or the host.

[0006] Preferably, the battery case further includes a battery and a circuit board mounted within the receiving cavity, the conductive terminals being connected to the circuit board and exposed outward from the housing wall of the housing facing the first direction, and the battery case being configured to allow connection of the battery case to the host by pushing the battery case along the first direction and causing the conductive terminals to be electrically connected to the host.

[0007] Preferably, a terminal receiving groove is formed on the housing wall facing the first direction, the conductive terminal is exposed outward through the terminal receiving groove, and the outer end of the conductive terminal along the first direction does not extend beyond the housing portion surrounding the terminal receiving groove.

[0008] Preferably, the locking structure includes a movable latch and a spring that elastically abuts against the movable latch. The movable latch has multiple latches. When the battery compartment is pushed along the first direction, the movable latch is driven to move relative to the housing to an avoidance position to overcome the elastic force of the spring, so as to allow the outer surface of the housing facing the first direction to approach the host.

[0009] Preferably, the movable latch has a latch button located on the side opposite to the spring, so that the movable latch can be moved to the avoidance position by pressing the latch button.

[0010] Preferably, the movable latch is slidably mounted within the receiving cavity, and a plurality of the latches extend through the outer surface of the housing facing the first direction to the outside of the housing. The latch button is exposed outward from the housing wall facing the second direction to allow it to be pressed along the second direction, which is perpendicular to the first direction.

[0011] Preferably, the movable buckle has a U-shaped body, and a plurality of latches are spaced apart on two arms of the U-shaped body. The conductive terminal is exposed outward from the outer surface of the housing facing the first direction at one end near the housing. The buckle button is located on the end arm of the U-shaped body and is exposed outward from the housing wall facing the second direction at the other end of the housing.

[0012] Preferably, the locking structure includes a plurality of springs, the plurality of springs including arm springs that elastically abut against the ends of the two arm supports of the movable buckle and end arm springs that elastically abut against the end arm.

[0013] Preferably, the spring elastically abuts against the movable latch along a direction perpendicular to the first direction, and the latch is formed with an inclined guide surface that is inclined relative to the elastic abutment direction of the spring and the first direction, so that when the battery box is pushed toward the first direction, the host acts on the inclined guide surface to drive the movable latch to move toward the avoidance position.

[0014] Preferably, the latch is formed with a slot for engaging with the host computer, and has a slot side, a slot end, and a slot top for defining the slot.

[0015] Preferably, the battery box further includes a battery bracket installed within the receiving cavity, allowing multiple battery cells to be connected together and fixed within the receiving cavity by the battery bracket.

[0016] Preferably, the housing includes a lower shell with an opening and an upper cover connected to the opening of the lower shell, the conductive terminal being exposed outward through the upper cover, and / or, a guide structure is formed on the housing wall facing the first direction, surrounding the conductive terminal, the guide structure being configured to guide the battery box to move relative to the host in the first direction.

[0017] A second aspect of this invention provides an oxygen generator, including a main unit and the aforementioned battery box, wherein the main unit has a battery box connection portion for engaging with the locking structure of the battery box.

[0018] Through the above technical solution, the battery box of this utility model allows its conductive terminals to be electrically connected to the host by moving along the height direction of the battery box or the host. Then, the battery box is fixed to the host by a locking structure. Thus, the battery box does not need to be provided with a horizontal slide rail or other guiding structure to guide it to slide into the host and maintain the installation position, thereby reducing the space occupied by the oxygen concentrator and facilitating the portability and miniaturization of the oxygen concentrator. Attached Figure Description

[0019] Figure 1 This is a 3D view of a battery box that can be used in an oxygen concentrator;

[0020] Figure 2 yes Figure 1 Exploded view of the battery box;

[0021] Figure 3 This is an exploded view of another type of battery box that can be used in oxygen concentrators;

[0022] Figure 4 yes Figure 3 The diagram shows the installation structure of the battery bracket and some battery cells in the battery box.

[0023] Figure 5 A perspective view of a battery box according to a preferred embodiment of the present invention;

[0024] Figure 6 yes Figure 5 Exploded view of the battery box;

[0025] Figure 7 yes Figure 6 A magnified view of part C in the middle;

[0026] Figure 8 This is a perspective view of an oxygen concentrator according to a preferred embodiment of the present invention, wherein the main housing has been removed;

[0027] Figure 9 yes Figure 8 Exploded view of a Chinese oxygen concentrator;

[0028] Figure 10 yes Figure 9 A magnified view of part D in the middle.

[0029] Explanation of reference numerals in the attached figures

[0030] 100-Battery box; 1-Housing shell; 11-Top cover; 11a-Guide boss; 11b-Intercepting boss; 11c-Terminal receiving slot; 11d-Label; 12-Lower shell; 2-Battery; 3-Circuit board; 31-Conductive terminal; 4-Modible latch; 41-Latch tongue; 41a-Sloping guide surface; 41b-Slot; 411-Slot side; 412-Slot end; 413-Slot top; 42-Snap button; 5-Spring; 6-Foot pad; 7-Battery bracket; 71-Battery mounting slot; 200-Main unit; 201-Snap protrusion. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself.

[0033] Figure 1 and Figure 2 A battery compartment for use in an oxygen concentrator is shown. In normal use, the oxygen concentrator can be placed on a table via the battery compartment. For this purpose, the bottom side of the battery compartment can be provided with feet 6 to provide shock absorption and anti-slip function.

[0034] The battery box includes a housing 1 with a receiving cavity, a battery 2 installed in the receiving cavity, and a circuit board 3. The circuit board 3 has exposed conductive terminals 31. When the battery box is connected to the oxygen concentrator main unit, the conductive terminals 31 are electrically connected to the main unit so that the battery 2 in the battery box can supply power to the compressor or the like in the main unit.

[0035] Typically, the battery case housing 1 may include a lower housing 12 with an upper opening and an upper cover 11 connected to the opening of the lower housing 12. The upper cover 11 may be connected to the lower housing 12 by ultrasonic welding and / or fastening screws, ensuring the sealing of the internal cavity of the housing 1. Several feet 6 may be provided on the bottom side of the lower housing 12. Figure 2 and Figure 3 The battery box shown may also have a label 11d attached to its top cover 11 to display information such as the remaining power of the battery box, in conjunction with indicator lights.

[0036] The battery 2 within the housing cavity may include multiple battery cells interconnected as a whole by a battery bracket 7, which provides protection for the battery. In the illustrated embodiment, the housing cavity accommodates only one row of battery cells. In other embodiments, the housing cavity accommodates two or more rows of battery cells connected as a whole by the battery bracket 7 to achieve a larger capacity. For example, in Figure 3 and Figure 4 In the illustrated embodiment, the battery housing 1 contains two rows of battery cells mounted by battery brackets 7. More specifically, the battery brackets 7 include a first bracket and a second bracket disposed opposite to each other, and battery mounting grooves 71 are formed on the first and second brackets for positioning and mounting the battery cells, so as to fix the battery cells in a predetermined arrangement at their mounting positions within the housing 1, avoiding accidents such as fires caused by collisions. Figure 4 In this figure, the battery mounting slot 71 is designed as a cylindrical hole, and to show the structure of the battery mounting slot 71, only one side of the battery bracket 7 is shown, with only one row of battery cells installed. In other words... Figure 2 In the embodiment shown, the first bracket and the second bracket are connected as one unit, and the battery mounting slot 71 is set as an arc-shaped slot with a downward opening.

[0037] Circuit board 3 is typically located on top of battery 2 and is electrically connected to battery 2 via wires, so that the power supplied by battery 2 can be output through conductive terminals 31 thereon. To ensure reliable connection and avoid excessive battery box size, circuit board 3 can be soldered to the battery electrodes using metal sheets. Conductive terminals 31 are exposed outward through the top cover 11 so that they can be electrically connected to the host when the battery box is connected to the host.

[0038] The housing 1 also includes a pressable movable latch 4. In its natural state, the latch 4 protrudes upward under the action of a spring, engaging with the corresponding latching position on the main unit to prevent the battery compartment from accidentally detaching. The upper cover 11 of the housing 1 also features an upwardly protruding insertion boss 11b, with guide grooves on both sides for mating with the main unit. The movable latch 4 and conductive terminals 31 are located on the edges of the housing 1 near both ends of the insertion boss 11b. During assembly, the operator must align the insertion boss 11b with the corresponding slot on the main unit, and then... Figure 1The battery compartment is pushed in the direction indicated by arrow B, causing the insertion protrusion 11b to insert into the main unit until the movable latch 4 on the housing 1 engages with the main unit. Since the conductive terminal 31 is located on the opposite edge to the movable latch 4, reliable electrical connection between the conductive terminal 31 and the main unit is primarily ensured by the cooperation between the insertion protrusion 11b and the main unit. The movable latch 4 mainly prevents the battery compartment from accidentally detaching from the main unit. Furthermore, during the above operation, the operator needs to apply a horizontal force to both the battery compartment and the main unit when inserting the battery compartment into the main unit to engage the insertion protrusion 11b. In particular, the insertion protrusion 11b on the battery compartment occupies a large width of space on the surface of the housing 1, ensuring the battery compartment is securely fixed to the bottom of the main unit. However, this is disadvantageous for the space arrangement and miniaturization / portability development of the oxygen concentrator.

[0039] In this regard, such as Figure 5 and Figure 6 As shown, this utility model provides a battery box, which includes a housing 1 with a receiving cavity. The outer surface of the housing 1 is provided with conductive terminals 31 and a locking structure. (Referring to...) Figures 8 to 10 As shown, the battery box 100 is configured such that the conductive terminal 31 can be electrically connected to the host 200 by moving along a first direction, and then a locking structure fixes the battery box 100 to the host 200, wherein the first direction is the height direction of the battery box 100 or the host 200.

[0040] Therefore, the battery box 100 does not need to be equipped with a horizontal slide rail or other guiding structure to guide it to slide into the main unit 200 and maintain its installation position, thereby reducing the space occupied by the oxygen concentrator and making the oxygen concentrator more portable and smaller.

[0041] In the preferred embodiment illustrated, the battery case further includes a battery 2 and a circuit board 3 mounted within a receiving cavity. Conductive terminals 31 are connected to the circuit board 3 and are configured to be exposed outwards from the surface of the housing 1 facing a first direction (the top surface illustrated). The battery case is configured to allow connection to a host computer by pushing the battery case along the first direction, thereby electrically connecting the conductive terminals 31 to the host computer.

[0042] Understandably, despite Figure 6 The image only shows a single row of battery cells arranged horizontally, but these battery cells can also utilize, for example... Figures 2 to 4 The battery holder 7 shown is fixed inside the receiving cavity of the housing 1, therefore, the aforementioned combination Figures 2 to 4 The description of the structure and advantages of battery holder 7 also applies to Figure 6 The implementation methods shown will not be repeated here.

[0043] Therefore, in the preferred embodiment shown in the figure, with the battery box placed on the table, the main unit can be assembled together by pressing down on the battery box, and the conductive terminal 31 can be electrically connected to the main unit, improving the ease of assembly and disassembly of the battery box. In portable oxygen concentrators, because the main unit can have a small size and weight, the user can assemble the main unit and battery box with one hand. In other embodiments, if the battery box is installed in another position on the main unit, the side of the main unit opposite to the battery box installation position can be positioned, and then the battery box can be pushed towards the main unit to assemble the battery box onto the main unit.

[0044] In the battery box of this utility model, the housing 1 may include a lower shell 12 with an opening and an upper cover 11 connected to the opening of the lower shell 12. The upper cover 11 may be connected to the lower shell 12 by ultrasonic welding and / or fastening screws, ensuring the sealing of the internal cavity of the housing 1. The bottom side of the lower shell 12 may be provided with several feet 6 for shock absorption and anti-slip purposes.

[0045] In this design, a terminal receiving groove 11c may be formed on the housing wall of the housing 1 facing the first direction (such as the aforementioned upper cover 11 of the housing 1). The conductive terminal 31 is exposed outward through the terminal receiving groove 11c, and the outer end of the conductive terminal 31 along the first direction does not extend beyond the housing portion surrounding the terminal receiving groove 11c. For example, in Figure 5 and Figure 6 In the illustrated embodiment, the terminal receiving groove 11c is formed as an elongated hole surrounded by a guide boss 11a protruding upward from the outer surface of the upper cover 11, as described later. The highest point of the conductive terminal 31 does not exceed the height of the guide boss 11a, thereby preventing damage to the conductive terminal 31 due to accidental impacts. In other embodiments, the terminal receiving groove 11c can also be formed in other ways, for example... Figure 2 The terminal receiving groove 11c shown is in the form of a recess.

[0046] Typically, a battery case can be snapped onto a host unit using a latch to prevent accidental detachment. Therefore, the locking structure in the battery case of this invention can include a movable latch 4 and a spring 5 elastically connected to the movable latch 4, so that the movable latch 4 is held in the latched position by the action of the spring 5. The movable latch 4 may have multiple latches 41. When the battery case is pushed in a first direction, the movable latch 4 is driven to overcome the elastic force of the spring 5 and move relative to the housing 1 to a clearance position, allowing the outer surface of the housing 1 facing the first direction (top surface shown in the figure) to approach the host unit. The latches 41 of the movable latch 4 can move relative to the housing 1 in various ways, such as moving or rotating. When the battery case is pushed towards the host unit, the latches 41 are driven to move to the clearance position, thereby allowing the outer surface of the housing 1 facing the first direction to approach the host unit. When the outer surface of the housing 1 facing the first direction engages with the host unit and the conductive terminal 31 is electrically connected to the host unit, the latches 41 return to the latched position under the action of the spring 5, thus realizing the connection between the battery case and the host unit. Meanwhile, by setting multiple latches 41, the battery box can be latched to the host at different positions. Thus, the relative position of the battery box and the host can be limited only by these latches 41, so that there is no need to set the insertion limiting structure on the outer surface of the battery box housing 1 facing the first direction and the corresponding surface of the host, which simplifies the surface shape of the battery box.

[0047] In the preferred embodiment illustrated, the movable latch 4 is configured with a generally U-shaped main body, with multiple latches 41 spaced apart on two arms of the U-shaped main body. Multiple through slots are formed on the top cover 11 of the battery compartment. The main body of the movable latch 4 is located within the receiving cavity of the battery compartment, allowing the multiple latches 41 to extend outwards from the top surface of the top cover 11 through the through slots. A latch button 42 is provided on one end arm of the U-shaped main body, protruding outwards from one end of the housing 1. A spring 5 abuts against the side of the U-shaped main body opposite to the latch button 42. Therefore, when the latch button 42 is pressed, the movable latch 4 can overcome the elastic force of the spring 5 and move towards the side where the spring 5 is located. Figure 3 (in the direction indicated by the middle arrow A), so that the battery compartment can be removed from the main unit by pressing the latch button 42; and, when the main unit is pressed toward the battery compartment, the force applied by the main unit to the latch 41 can drive the movable latch 4 to overcome the elastic force of the spring 5 and move toward the side where the spring 5 is located, so that the main unit is close to the top surface of the battery compartment until the movable latch 4 is reset to the latched position under the action of the spring 5, which will be described later in conjunction with the preferred structure of the latch 41.

[0048] As mentioned above, the latch 41 can extend through the surface of the first side housing to the outside of the housing 1. In this case, the latch button 42 of the movable latch 4 can be exposed outward from the housing wall of the housing 1 facing the second direction, which is the direction shown by arrow A in the figure, and is perpendicular to the aforementioned first direction, so that the latch button 42 can be pressed along the second direction to move the movable latch 4 from the engaged position to the abdication position.

[0049] To ensure the smooth movement of the movable latch 4, the battery compartment of this invention can be equipped with multiple springs 5, each abutting against different positions of the movable latch 4. In the preferred embodiment shown in the figure, the U-shaped body of the movable latch 4 has positioning posts at the free ends of the two support arms and two positioning posts on the side of the end arm opposite to the latch button 42, thereby connecting four springs 5, namely support arm springs elastically abutting against the two support arms and end arm springs elastically abutting against the end arm. This ensures that the movable latch 4 is driven to move smoothly when the battery compartment is disassembled or assembled.

[0050] As described above, during the assembly and disassembly process, the pressing force applied to the latch button 42 and the spring force applied to the movable latch 4 by the spring 5 are respectively along a second direction perpendicular to the first direction or the opposite direction of the second direction. Based on this, combined with... Figure 7 As shown, the latch 41 of this invention can be formed with an inclined guide surface 41a, which is inclined relative to both the elastic contact direction of the spring 5 and the first direction. Therefore, when the battery box is pushed along the first direction or the main unit is pushed towards the surface of the battery box in the first direction, the main unit acts on the inclined guide surface 41a of the latch 41, thereby driving the movable latch 4 to compress the spring and move it to the avoidance position.

[0051] Furthermore, in a preferred embodiment of the battery compartment, the latch 41 of the movable latch 4 can be formed with a slot 41b for engaging with the host, and has a slot side 411, a slot end 412, and a slot top 413 for defining the slot 41b. Thus, when engaged with the host by the slot 41b, the slot side 411, slot end 412, and slot top 413 of the latch 41 can abut against the host in three directions respectively. This not only restricts the separation of the battery compartment and the host in the direction away from each other by the slot top 413, but also defines the relative positions of the battery compartment and the host in the other two directions by the slot side 411 and the slot end 412, so as to ensure that the conductive terminal 31 is always reliably electrically connected to the host.

[0052] Accordingly, such as Figure 9 and Figure 10As shown, the main unit 200 may have a battery compartment connection portion for engaging with the latch 41 of the aforementioned movable latch 4. Specifically, the bottom of the main unit 200 may have multiple locking protrusions 201 corresponding to each latch 41. When the battery compartment 100 is pushed toward the bottom of the main unit 200 (i.e., along the first direction), the locking protrusions 201 act on the inclined guide surface 41a of the latch 41, thereby driving the movable latch 4 to overcome the elastic force of the spring 5 and move as a whole in a second direction perpendicular to the first direction (the horizontal direction shown in the figure) until the locking protrusions 201 engage in the slot 41b. At this time, the locking protrusions 201 not only prevent the battery compartment from detaching from the main unit in the opposite direction of the first direction by acting on the top 413 of the slot of the latch 41, but also prevent relative movement between the battery compartment and the main unit in the horizontal direction by fitting against the slot side 411 of the latch 41, ensuring that the conductive terminal 31 is properly electrically connected to the main unit. Simultaneously, under the action of spring 5, the slot end 412 of the latch 41 abuts against the locking protrusion 201. When it is necessary to remove the battery box, the operator can press the latch button 42 of the movable latch 4, so that the locking protrusion 201 no longer blocks the latch 41, thereby allowing the battery box to be removed from the main unit in the opposite direction to the first direction.

[0053] like Figure 5 As shown, a guide boss 11a, which gradually tapers away from the housing 1, can be formed on the top surface of the upper cover 11 of the housing 1. The conductive terminal 31 passes through the guide boss 11a and is exposed outward. With this arrangement, during the process of pushing the battery box and the main unit closer together, the guide boss 11a can guide the relative movement of the two, and prevent the conductive terminal 31 from being damaged by impact. In this solution, the guide boss 11a not only accommodates the conductive terminal 31 through the terminal receiving groove 11c, but also has a guiding function. In other embodiments, the above-mentioned guide boss 11a can also be set as other forms of guiding structure, as long as it can guide the battery box to move relative to the main unit in the first direction to achieve electrical connection between the conductive terminal 31 and the main unit.

[0054] Another aspect of this utility model provides an oxygen generator, such as... Figures 8 to 10 As shown, the oxygen concentrator includes a main unit 200 and the aforementioned battery box 100. The battery box 100 can be connected to the main unit 200 by being pushed in a first direction, and the conductive terminal 31 is electrically connected to the main unit 200.

[0055] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A battery case characterized by comprising: The battery box includes a housing (1) formed with a receiving cavity, an electrically conductive terminal (31) and a locking structure provided on the outer surface of the housing (1), the battery box is arranged to move along a first direction so that the electrically conductive terminal (31) is electrically connected to a host (200), and the locking structure fixes the battery box to the host (200), wherein the first direction is the height direction of the battery box or the host (200).

2. The battery case according to claim 1, wherein The battery box further includes a battery (2) and a circuit board (3) installed in the receiving cavity, the electrically conductive terminal (31) is connected to the circuit board (3) and exposed outward from the housing wall of the housing (1) facing the first direction, the battery box is arranged to allow the battery box to be connected to the host (200) and the electrically conductive terminal (31) to be electrically connected to the host (200) by pushing the battery box along the first direction.

3. The battery case of claim 1, wherein, The housing wall of the housing (1) facing the first direction is formed with a terminal receiving groove (11c), the electrically conductive terminal (31) is exposed outward through the terminal receiving groove (11c), and the outer end of the electrically conductive terminal (31) along the first direction does not exceed the housing part surrounding the terminal receiving groove (11c).

4. The battery pack of claim 1, wherein, The locking structure includes a movable buckle (4) and a spring (5) elastically abutting to the movable buckle (4), the movable buckle (4) has a plurality of clamping tongues (41), when the battery box is pushed along the first direction, the movable buckle (4) is driven to move to a avoiding position relative to the housing (1) to allow the outer surface of the housing (1) facing the first direction to approach the host (200) by overcoming the elastic force of the spring (5).

5. The battery pack of claim 4, wherein, The movable buckle (4) has a buckle button (42) located on the side away from the spring (5), so that the movable buckle (4) can be moved to the avoiding position by pressing the buckle button (42).

6. The battery pack of claim 5, wherein, The movable buckle (4) is slidably installed in the receiving cavity, a plurality of clamping tongues (41) extend to the outside of the housing (1) through the outer surface of the housing (1) facing the first direction, and the buckle button (42) is exposed outward from the housing wall of the housing (1) facing the second direction to allow being pressed along the second direction, the second direction being perpendicular to the first direction.

7. The battery pack of claim 6, wherein, The movable buckle (4) has a U-shaped body, a plurality of clamping tongues (41) are arranged on two arms of the U-shaped body at intervals, the electrically conductive terminal (31) is exposed outward from the outer surface of the housing (1) facing the first direction at a position close to one end of the housing (1), and the buckle button (42) is arranged on the end arm of the U-shaped body and exposed outward from the housing wall of the housing (1) facing the second direction at the other end of the housing (1).

8. The battery pack of claim 7, wherein, The locking structure includes a plurality of springs (5), the plurality of springs (5) include arm springs elastically abutting to the end portions of the two arms of the movable buckle (4) and an end arm spring elastically abutting to the end arm.

9. The battery pack of claim 4, wherein, The spring (5) elastically abuts to the movable buckle (4) in a direction perpendicular to the first direction, and the clamping tongue (41) is formed with an inclined guide surface (41a) inclined to the first direction relative to the elastic abutting direction of the spring (5), so that the host (200) acts on the inclined guide surface (41a) to drive the movable buckle (4) to move to the avoiding position when the battery box is pushed towards the first direction.

10. The battery pack of claim 4, wherein, The clamping tongue (41) is formed with a clamping groove (41b) for clamping to the host (200), and has a clamping groove side (411), a clamping groove end (412) and a clamping groove top (413) for defining the clamping groove (41b).

11. The battery pack of claim 1, wherein, The battery box further comprises a battery holder (7) mounted in the accommodating cavity, so as to allow a plurality of battery cells to be connected together by the battery holder (7) and fixed in the accommodating cavity.

12. The battery pack of claim 1, wherein, The shell (1) comprises a lower shell (12) with an opening and an upper cover (11) connected to the opening position of the lower shell (12), the conductive terminal (31) is exposed outward through the upper cover (11), and / or the shell wall of the shell (1) towards the first direction is formed with a guide structure surrounding the conductive terminal (31), which is arranged to guide the battery box to move relative to the host (200) along the first direction.

13. An oxygen generator, characterized by comprising: A host (200) and a battery box (100) according to any one of claims 1 to 12 are included, and the host (200) is formed with a battery box connecting portion for engaging with the locking structure of the battery box (100).

Images