Battery pack inverter

Abstract

The utility model relates to the technical field of inverters, and discloses a battery pack inverter, which comprises a shell cover and a shell body, a first cavity is formed in the shell cover; a first waterproof layer is arranged in the first cavity; the shell body is arranged on one side of the shell cover, and a first sealing piece is arranged between the shell body and the shell cover; the shell body comprises an upper shell and a lower shell; the upper shell and the lower shell are buckled and connected to form a second cavity; an opening is formed in one side of the second cavity, and the shell cover is arranged on the opening of the second cavity; a second waterproof layer and a third waterproof layer are arranged in the second cavity in the circumferential direction; and a second sealing piece is arranged between the upper shell and the lower shell.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to a battery pack inverter. Background Art

[0002] An inverter is a transformer that converts direct current into alternating current. The direct current is usually the electric energy in a battery pack, and the alternating current is generally a sine wave of 220V and 55Hz. Due to advantages such as high conversion efficiency, fast startup, low safety performance consumption, good physical performance, strong load adaptability, and high stability, inverters are widely used in power tools, office equipment, and household appliances.

[0003] For example, in the Chinese patent document with the publication number CN220544707U and the patent name of battery pack inverter, it is mentioned that "including a battery pack, one side of the inverter housing is provided with a sliding card slot, the lower part of the sliding card slot is provided with a lower conductive plug-in end, the side of the battery pack is provided with a sliding card connection end matching the sliding card slot, an upper conductive plug-in end is arranged downward corresponding to the lower conductive plug-in end inside the sliding card connection end, a buckling mechanism is arranged in the sliding card slot and on the side of the battery pack in a matching manner, and after the sliding card connection end slides into the sliding card slot, the buckling mechanism is buckled with each other". This structural design has a universal battery pack interface, making the product application field wider and more convenient for customers to use. However, the existing inverters have poor waterproof effect, and the liquid is easy to enter the inside of the inverter from the gap between the inverter housings, which easily causes damage to the internal components and reduces the service life of the inverter.

[0004] Therefore, there is an urgent need for a battery pack inverter to solve the above problems. Summary of the Utility Model

[0005] Based on the above, the purpose of the utility model is to provide a battery pack inverter to solve the problems that the existing inverters have poor waterproof effect, the liquid is easy to enter the inside of the inverter from the gap between the inverter housings, which easily causes damage to the internal components and reduces the service life of the inverter.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A battery pack inverter includes a shell cover and a shell body; a first cavity is arranged inside the shell cover; a first waterproof layer is arranged inside the first cavity; the shell body is arranged on one side of the shell cover, and a first sealing member is arranged between the shell body and the shell cover; the shell body includes an upper shell and a lower shell; the upper shell and the lower shell are snap-connected to form a second cavity; one side of the second cavity is open, and the shell cover is arranged on the opening of the second cavity; a second waterproof layer and a third waterproof layer are arranged circumferentially inside the second cavity; a second sealing member is arranged between the upper shell and the lower shell.

[0008] As a preferred solution for a battery pack inverter, multiple groups of outwardly protruding bumps are provided on the first seal; multiple groups of first grooves corresponding to the bumps are provided on the housing body.

[0009] As a preferred solution for a battery pack inverter, multiple groups of the first grooves are equidistantly provided on the housing body, and a labyrinth structure is formed between the housing body and the multiple groups of the first grooves.

[0010] As a preferred solution for a battery pack inverter, a second groove that is recessed inward is provided on the second seal near the lower housing side; the second seal has a "U" - shaped structure; a protruding portion corresponding to the second groove is provided on the lower housing; the second seal is wrapped around the outside of the protruding portion.

[0011] As a preferred solution for a battery pack inverter, the first waterproof layer, the second waterproof layer, and the third waterproof layer all include a water - absorbing layer and a desiccant layer; the water - absorbing layer is provided on the inner wall of the first cavity or the second cavity; the desiccant layer is provided on one side of the water - absorbing layer.

[0012] As a preferred solution for a battery pack inverter, connection terminals for connecting to a battery pack are provided on the upper housing; a protection component corresponding to the connection terminals is provided on the upper housing.

[0013] As a preferred solution for a battery pack inverter, the protection component includes a protection cover and a first spring; the protection cover is slidably connected inside the upper housing, and the protection cover is provided above the connection terminals.

[0014] As a preferred solution for a battery pack inverter, a locking component is provided on the upper housing, and the locking component is provided outside the connection terminals.

[0015] As a preferred solution for a battery pack inverter, the locking component includes a button, a lock catch, and a second spring; the middle of the button is rotatably connected to the upper housing; one end of the button is provided with a triggering portion extending outward, and the other end has a pressing portion that is recessed inward; the lock catch is provided between the connection terminals and the button, the lock catch is connected to the upper housing through the second spring; the triggering portion is inserted into the middle of the lock catch.

[0016] As a preferred solution for a battery pack inverter, multiple groups of first heat dissipation holes with spaced - apart distributions are provided on the housing cover, and the first waterproof layer is located inside the first heat dissipation holes; multiple groups of second heat dissipation holes with equidistantly distributed are provided on both sides of the lower housing, and the second waterproof layer is located inside the second heat dissipation holes; multiple groups of heat dissipation grooves are provided at one end of the lower housing, and the third waterproof layer is located inside the heat dissipation grooves; a heat - conducting layer is provided between the heat dissipation grooves and the third waterproof layer.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By providing a first seal and a second seal, the connection tightness between the shell cover and the shell body, and between the upper shell and the lower shell is improved, effectively preventing water from seeping into the inverter through the gaps between the shell cover and the shell body or between the upper shell and the lower shell, thus increasing the service life of the inverter. At the same time, by providing a first waterproof layer, a second waterproof layer and a third waterproof layer, the outer surface of the inverter is further waterproofed, absorbing the water that enters through the heat dissipation holes on the inverter and preventing the water from seeping into the inverter, thereby increasing the service life of the inverter. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a battery pack inverter provided by the present utility model;

[0020] Figure 2 It is a schematic diagram of the partial structure of the top view of a battery pack inverter provided by the present utility model;

[0021] Figure 3 is Figure 2 an enlarged schematic diagram of A in

[0022] Figure 4 It is a schematic diagram of the structure of the second sealing ring provided by the present utility model;

[0023] Figure 5 It is a schematic diagram of the overall structure of the protection component and the locking component provided by the present utility model;

[0024] Figure 6 It is a schematic diagram of the overall structure of the lower shell provided by the present utility model.

[0025] Among them, the reference numerals in the drawings are as follows:

[0026] 10, shell cover; 11, first waterproof layer; 12, first seal; 121, convex block; 13, first heat dissipation hole; 20, shell body; 201, first groove; 21, upper shell; 22, lower shell; 221, protruding part; 23, second waterproof layer; 24, third waterproof layer; 25, second seal; 26, second heat dissipation hole; 27, heat dissipation groove; 28, heat conduction layer; 29, connection terminal; 30, protection cover; 31, first spring; 32, button; 321, trigger part; 322, pressing part; 33, lock; 34, second spring. Detailed Embodiments

[0027] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. In addition, it should be noted that, for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0028] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0030] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0031] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0032] In one embodiment of the present utility model, as Figures 1-6As shown in the figure, a battery pack inverter is provided. A battery pack inverter includes a shell cover 10 and a shell body 20. A first cavity is provided inside the shell cover 10. A first waterproof layer 11 is provided inside the first cavity. The shell body 20 is arranged on one side of the shell cover 10, and a first seal 12 is provided between the shell body 20 and the shell cover 10. The shell body 20 includes an upper shell 21 and a lower shell 22. The upper shell 21 and the lower shell 22 are snap-connected to form a second cavity. One side of the second cavity is open, and the shell cover 10 is arranged on the opening of the second cavity. A second waterproof layer 23 and a third waterproof layer 24 are circumferentially provided inside the second cavity. A second seal 25 is provided between the upper shell 21 and the lower shell 22.

[0033] By providing the first seal 12 and the second seal 25, the connection tightness between the shell cover 10 and the shell body 20, and between the upper shell 21 and the lower shell 22 is improved, effectively preventing water from seeping into the inverter through the gaps between the shell cover 10 and the shell body 20, or between the upper shell 21 and the lower shell 22, and improving the service life of the inverter. At the same time, by providing the first waterproof layer 11, the second waterproof layer 23 and the third waterproof layer 24, the outer surface of the inverter is further waterproofed, absorbing the water entering through the heat dissipation holes on the inverter to prevent water from seeping into the inverter and improving the service life of the inverter.

[0034] Preferably, the first seal 12 is a sealing ring, and multiple groups of outwardly protruding bumps 121 are provided on the first seal 12. Multiple groups of first grooves 201 corresponding to the bumps 121 are provided on the shell body 20. By providing the first seal 12, the connection tightness between the shell cover 10 and the shell body 20, and between the upper shell 21 and the lower shell 22 is improved, effectively preventing water from seeping into the inverter through the gaps between the shell cover 10 and the shell body 20, or between the upper shell 21 and the lower shell 22. At the same time, through the mating connection between the bumps 121 and the first grooves 201, the connection strength between the shell cover 10 and the shell body 20, and between the upper shell 21 and the lower shell 22 is improved, making the connection between the shell cover 10 and the shell body 20, and between the upper shell 21 and the lower shell 22 more stable.

[0035] Further, multiple groups of the first grooves 201 are equidistantly arranged on the shell body 20, and a labyrinth structure is formed between the shell body 20 and the multiple groups of the first grooves 201. By providing the labyrinth structure, water seepage is effectively prevented, and at the same time, it can also play a role in dust prevention, avoiding dust from entering the inverter through the gaps between the shell cover 10 and the shell body 20, or between the upper shell 21 and the lower shell 22.

[0036] Preferably, a second groove that is recessed inward is provided on one side of the second seal 25 close to the lower housing 22. The second seal 25 has a "U" - shaped structure. A convex portion 221 corresponding to the second groove is provided on the lower housing 22. The second seal 25 wraps around the outside of the convex portion 221. By wrapping the convex portion 221 with the second seal 25 having a "U" - shaped structure, the connection sealing performance between the lid 10 and the body 20, and between the upper housing 21 and the lower housing 22 is improved, effectively preventing water from seeping into the inverter through the gaps between the lid 10 and the body 20 or between the upper housing 21 and the lower housing 22.

[0037] Preferably, the first waterproof layer 11, the second waterproof layer 23, and the third waterproof layer 24 all include a water - absorbing layer and a desiccant layer. The water - absorbing layer is provided on the inner wall of the first cavity or the second cavity. The desiccant layer is provided on one side of the water - absorbing layer. In this embodiment, the water - absorbing layer is a water - absorbing sponge, and the desiccant layer is filled with a desiccant material. When water seeps in through the first heat dissipation hole 13, the second heat dissipation hole 26, or the heat dissipation groove 27, the water - absorbing layer absorbs the water, and then the desiccant layer further absorbs the water, preventing the water from entering the inverter. Moreover, the desiccant layer can also control the humidity inside the inverter, avoiding damage to components such as circuit boards due to excessive humidity inside the inverter.

[0038] By providing the first seal 12 and the second seal 25, the connection sealing performance between the lid 10 and the body 20, and between the upper housing 21 and the lower housing 22 is improved, effectively preventing water from seeping into the inverter through the gaps between the lid 10 and the body 20 or between the upper housing 21 and the lower housing 22, and improving the service life of the inverter. At the same time, by providing the first waterproof layer 11, the second waterproof layer 23, and the third waterproof layer 24, the outer surface of the inverter is further waterproofed, absorbing the water entering through the heat dissipation holes on the inverter, preventing the water from seeping into the inverter, and improving the service life of the inverter.

[0039] Preferably, a connection terminal 29 for connecting to a battery pack is provided on the upper housing 21. A protection component corresponding to the connection terminal 29 is provided on the upper housing 21. By providing the protection component, the exposed connection terminal 29 is protected, avoiding damage to the connection terminal 29 or dust accumulation affecting the normal use of the inverter.

[0040] Specifically, the protection component includes a protection cover 30 and a first spring 31. The protection cover 30 is slidably connected inside the upper housing 21, and the protection cover 30 is provided above the connection terminal 29. Under the action of the first spring 31, the protection cover 30 always wraps the connection terminal 29 to protect the connection terminal 29. During operation, the protection cover 30 moves inward to compress the first spring 31, exposing the connection terminal 29 for connection to the battery pack, improving the convenience of the protection component.

[0041] Furthermore, a locking component is provided on the upper housing 21, and the locking component is provided outside the connecting terminal 29. By providing the locking component, the battery pack and the inverter can be stably fixed together when connected, preventing the two from loosening or falling off easily.

[0042] Specifically, the locking component includes a button 32, a lock 33 and a second spring 34. The middle part of the button 32 is rotatably connected to the upper shell 21. One end of the button 32 is provided with a buckle portion 321 extending outward, and the other end has a pressing portion 322 recessed in the box. The lock 33 is arranged between the connecting terminal 29 and the button 32, and the lock 33 is connected to the upper shell 21 through the second spring 34. The buckle portion 321 is inserted into the middle part of the lock 33. During disassembly, the pressing portion 322 is pushed upward to move the buckle portion 321 downward, and the buckle portion 321 drives the lock 33 to move downward, so that the lock 33 is detached from the bottom of the battery pack, and the battery pack can be removed from the inverter, simplifying the disassembly steps between the two.

[0043] Preferably, the shell cover 10 is provided with a plurality of first heat dissipation holes 13 distributed at intervals, and the first waterproof layer 11 is located inside the first heat dissipation holes 13. A plurality of second heat dissipation holes 26 distributed at equal intervals are provided on both sides of the lower shell 22, and the second waterproof layer 23 is located inside the second heat dissipation holes 26. A plurality of heat dissipation grooves 27 are provided at one end of the lower shell 22, and the third waterproof layer 24 is located inside the heat dissipation grooves 27. A heat conducting layer 28 is provided between the heat dissipation grooves 27 and the third waterproof layer 24. By providing the first waterproof layer 11, the second waterproof layer 23 and the third waterproof layer 24, water entering from the first heat dissipation holes 13, the second heat dissipation holes 26 or the heat dissipation grooves 27 is absorbed to prevent water from penetrating into the inverter, thereby improving the service life of the inverter.

[0044] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A battery pack inverter, characterized in that: include: A shell cover, wherein a first cavity is provided in the shell cover; A first waterproof layer is provided in the first cavity; A shell body, wherein the shell body is arranged on one side of the shell cover, and a first sealing member is arranged between the shell body and the shell cover; Wherein, the shell body includes an upper shell and a lower shell; the upper shell is snap-fitted with the lower shell to form a second cavity; one side of the second cavity is an opening, and the shell cover is arranged on the opening of the second cavity; a second waterproof layer and a third waterproof layer are circumferentially arranged in the second cavity; a second seal is arranged between the upper shell and the lower shell.

2. The battery pack inverter according to claim 1, characterized in that: The first sealing member is provided with a plurality of groups of protruding blocks protruding outward; the shell body is provided with a plurality of groups of first grooves corresponding to the protruding blocks.

3. The battery pack inverter according to claim 2, characterized in that: A plurality of groups of the first grooves are arranged on the shell body at equal intervals, and a labyrinth structure is formed between the shell body and the plurality of groups of the first grooves.

4. The battery pack inverter according to claim 1, characterized in that: The second sealing member is provided with a second groove which is recessed inwardly on one side close to the lower shell; the second sealing member is in a "U"-shaped structure; the lower shell is provided with a raised portion corresponding to the second groove; and the second sealing member is wrapped around the outer side of the raised portion.

5. The battery pack inverter according to claim 1, characterized in that: The first waterproof layer, the second waterproof layer and the third waterproof layer all include a water absorbing layer and a desiccant layer; the water absorbing layer is arranged on the inner wall of the first cavity or the second cavity; the desiccant layer is arranged on one side of the water absorbing layer.

6. The battery pack inverter according to any one of claims 1 to 5, characterized in that: The upper shell is provided with a connection terminal for connecting to the battery pack; the upper shell is provided with a protection component corresponding to the connection terminal.

7. The battery pack inverter according to claim 6, characterized in that: The protection component comprises a protection cover and a first spring; the protection cover is slidably connected in the upper shell, and the protection cover is arranged above the connecting terminal.

8. The battery pack inverter according to claim 7, characterized in that: The upper shell is provided with a locking component, and the locking component is arranged outside the connecting terminal.

9. The battery pack inverter according to claim 8, characterized in that: The locking component includes a button, a lock catch and a second spring; the middle part of the button is rotatably connected to the upper shell; one end of the button is provided with a trigger portion extending outward, and the other end has a pressing portion recessed in the box; the lock catch is provided between the connecting terminal and the button, and the lock catch is connected to the upper shell through the second spring; the trigger portion is inserted into the middle part of the lock catch.

10. The battery pack inverter according to any one of claims 1 to 5, characterized in that: The shell cover is provided with a plurality of first heat dissipation holes distributed at intervals, and the first waterproof layer is located on the inner side of the first heat dissipation holes; the two sides of the lower shell are provided with a plurality of second heat dissipation holes distributed at equal intervals, and the second waterproof layer is located on the inner side of the second heat dissipation holes; one end of the lower shell is provided with a plurality of heat dissipation grooves, and the third waterproof layer is located on the inner layer of the heat dissipation grooves; a heat conductive layer is provided between the heat dissipation grooves and the third waterproof layer.

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