Lithium battery pack

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pack, which comprises a storage battery shell base, a storage battery shell upper cover, a first through hole, a second through hole and a second through hole, the fixing frame is arranged at the bottom of the storage battery shell base, and a fixing plate is arranged at one end of the fixing frame; the fixing assembly is arranged in the fixing plate, and the fixing assembly comprises an insertion block; the battery has the beneficial effects that the gap between the storage battery shell base and the storage battery shell upper cover and the gap between the first through hole and the battery output line are sealed through glue, so that the battery has the performances of water resistance, dust resistance, salt mist resistance and the like, and the IP68 protection grade can be met; when the storage battery shell base is fixed, the first air bag is extruded, air is discharged to the second air bag and the air storage cavity, the pull rod is pressed downwards, the sealing gasket extrudes the air in the air storage cavity into the second air bag, the insertion block is pushed to the fixing groove, and the purpose of quickly mounting and dismounting the storage battery shell base is achieved.

Description

Technical Field

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

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions;

[0003] Existing lithium battery packs are designed for indoor use. When lithium battery packs need to be used outdoors, additional outdoor cabinets or chassis that meet IP ratings are required. However, when used in high salt fog areas, the chassis is prone to corrosion or high salt fog enters the internal components to corrode, thereby affecting the service life of the lithium battery pack. In addition, existing lithium battery packs are fixed and installed with fixing bolts, and installation and disassembly waste a certain amount of time and are relatively cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery pack to solve the problems raised by the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lithium battery pack, comprising:

[0007] A battery housing base, wherein a matching battery housing upper cover is disposed on the battery housing base, a vacuum hole is provided on an upper end surface of one end of the battery housing upper cover, and a first through hole is provided on an end of the battery housing upper cover away from the vacuum hole;

[0008] A fixing frame is provided with two groups, the two groups of fixing frames are symmetrically distributed at the bottom of the battery housing base, and a fixing plate is provided at one end of the fixing frame away from the battery housing base, a fixing rod is fixedly provided on the fixing plate, and a second through hole is opened at the position of the fixing frame corresponding to the fixing plate;

[0009] The fixing assembly is arranged inside the fixing plate, and the fixing assembly comprises an elastically arranged plug block. A fixing groove is formed on the side wall of the fixing rod at a position corresponding to the plug block.

[0010] Preferably, the battery housing base is provided with battery cells and related components, the battery cells and related components are connected with battery output lines, and one end of the battery output line away from the battery cells and related components passes through the first through hole and extends to the outside of the battery housing base;

[0011] The connection between the battery housing base and the battery housing upper cover is sealed by filling glue;

[0012] After the battery housing base and the battery housing upper cover are filled with glue and sealed, vacuum is drawn through the vacuum hole. After the vacuum is drawn, the vacuum hole is sealed by filling glue, and the first through hole and the battery output line are sealed by filling glue, and then polarity is marked with colored glue.

[0013] Preferably, at least two groups of symmetrically distributed fixing rods are provided on the upper surface of the fixing plate, and the size of the second through holes matches the size of the fixing rods, and the fixing frame is connected to the fixing plate through the second through holes and the fixing rods;

[0014] The side wall of each fixing rod is provided with two groups of symmetrically distributed guide grooves, and a matching guide block is slidably arranged inside each guide groove, and the guide block is connected to the inner wall of the second through hole.

[0015] Preferably, the fixing grooves are provided in a plurality of groups, and the plurality of fixing grooves are evenly spaced up and down, and a second receiving groove is provided on the side wall of the guide block at a position corresponding to one of the groups of fixing grooves, and the plug block is plugged and arranged inside the second receiving groove;

[0016] A second airbag is arranged inside the second receiving groove, and the second airbag is fixedly arranged between the end of the plug block and the inner wall of the second receiving groove, and a matching first elastic member is fixedly arranged inside the second airbag, and a chamfered surface is arranged on the lower end surface of one end of the plug block away from the second airbag.

[0017] Preferably, a first receiving groove with an annular structure is provided on the lower end surface of the fixing frame at a position corresponding to the insert block, a matching first airbag is provided inside the first receiving groove, a second exhaust hole is provided between the interior of the first airbag and the interior of the second airbag, and the interior of the first airbag is connected with the interior of the second airbag through the second exhaust hole.

[0018] Preferably, a countersunk hole is provided at the top of the fixing frame at a position corresponding to the plug block, an air storage cavity is provided at the bottom of the countersunk hole, a sealing gasket is provided inside the air storage cavity for sealing and sliding, a second elastic member is provided between the bottom of the sealing gasket and the bottom of the air storage cavity, and the sealing gasket is elastically provided inside the air storage cavity through the second elastic member;

[0019] A first exhaust hole is provided between the air storage cavity and the second air bag, the air storage cavity is connected with the interior of the second air bag through the first exhaust hole, and the first exhaust hole is located below the sealing pad.

[0020] Preferably, a matching pull rod is inserted inside the countersunk hole, and one end of the pull rod is rotatably connected to the sealing gasket;

[0021] A limiting block is arranged on the outer surface of the pull rod at a position corresponding to the inner wall of the countersunk hole, and a matching limiting groove is opened on the inner wall of the countersunk hole at a position corresponding to the limiting block, and the cross section of the limiting groove is an "L"-shaped structure.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model seals the gap between the battery housing base and the battery housing upper cover and the gap between the first through hole and the battery output line by glue, so that the battery can achieve waterproof, dustproof, salt spray proof and other performances, so that it can meet the IP68 protection level;

[0024] When the battery shell base is fixed to the fixing plate by the fixing frame, the first airbag is squeezed, and the gas inside the first airbag is discharged to the inside of the second airbag and the air storage cavity. When the fixing frame contacts the bottom of the fixing plate, the pull rod is pressed down, and the sealing gasket squeezes the gas inside the air storage cavity to the inside of the second airbag. The second airbag expands and pushes the plug to the inside of the fixing groove, thereby achieving the purpose of quickly installing and disassembling the battery shell base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 It is a side view of the three-dimensional structure of the utility model;

[0027] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 4 This is a schematic diagram of the connection between the fixing plate and the fixing rod structure of the utility model;

[0029] Figure 5 This is a cross-sectional schematic diagram of the fixing frame structure of the utility model;

[0030] Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 7 This is a schematic diagram of the connection between the pull rod and the limit block structure of the utility model;

[0032] Figure 8 It is a schematic cross-sectional view of the air storage chamber structure of the utility model.

[0033] In the figure: a battery housing base 1, a battery housing upper cover 2, a vacuum hole 3, a first through hole 4, a battery output line 5, a fixing frame 6, a fixing plate 7, a second through hole 8, a fixing rod 9, a pull rod 10, a guide groove 11, a guide block 12, a fixing groove 13, a first receiving groove 14, a first air bag 15, an insert block 16, a chamfer 17, a second receiving groove 18, a second air bag 19, a first elastic member 20, a first exhaust hole 21, a second exhaust hole 22, an air storage cavity 23, a sealing pad 24, a second elastic member 25, a countersunk hole 27, a limit block 28, and a limit groove 29. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0035] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0036] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0039] Embodiment 1:

[0040] See also Figures 1 to 8 The utility model provides a technical solution: a lithium battery pack, comprising:

[0041] A battery housing base 1, wherein a matching battery housing upper cover 2 is disposed on the battery housing base 1, a vacuum hole 3 is provided on an upper end surface of one end of the battery housing upper cover 2, and a first through hole 4 is provided on an end of the battery housing upper cover 2 away from the vacuum hole 3;

[0042] A fixing frame 6 is provided with two groups, and the two groups of fixing frames 6 are symmetrically distributed at the bottom of the battery housing base 1, and a fixing plate 7 is provided at one end of the fixing frame 6 away from the battery housing base 1, and a fixing rod 9 is fixedly provided on the fixing plate 7, and a second through hole 8 is opened at the position of the fixing frame 6 corresponding to the fixing plate 7;

[0043] A fixing assembly is arranged inside the fixing plate 7, and the fixing assembly includes an elastically arranged plug block 16, and a fixing groove 13 is formed on the side wall of the fixing rod 9 at a position corresponding to the plug block 16;

[0044] The battery shell base 1 is provided with battery cells and related components, and the battery cells and related components are connected with a battery output line 5. One end of the battery output line 5 away from the battery cells and related components passes through the first through hole 4 and extends to the outside of the battery shell base 1. The connection between the battery shell base 1 and the battery shell upper cover 2 is sealed by filling glue. After the battery shell base 1 and the battery shell upper cover 2 are filled with glue and sealed, vacuum is drawn through the vacuum hole 3. After the vacuum is drawn, the vacuum hole 3 is sealed by filling glue, and the first through hole 4 and the battery output line 5 are sealed by filling glue. Polarity is marked with colored glue, so that the battery can achieve waterproof, dustproof, salt spray proof and other properties, so that it can meet the IP68 protection level, and then the fixing frame 6 is fixed on the fixing plate 7 through the cooperation of the second through hole 8, the fixing rod 9 and the fixing assembly, thereby fixing the battery shell base 1.

[0045] Embodiment 2:

[0046] like Figure 2-Figure 3 As shown, the structure of the lithium battery pack disclosed in the second embodiment of the present invention is basically the same as that in the first embodiment, except that:

[0047] At least two groups of symmetrically distributed fixing rods 9 are provided on the upper surface of the fixing plate 7, and the size of the second through holes 8 matches the size of the fixing rods 9, and the fixing frame 6 is connected to the fixing plate 7 through the second through holes 8 and the fixing rods 9;

[0048] The side wall of each of the fixing rods 9 is provided with two sets of symmetrically distributed guide grooves 11, and a matching guide block 12 is slidably provided inside each of the guide grooves 11, and the guide block 12 is connected to the inner wall of the second through hole 8;

[0049] The fixing frame 6 is connected to the fixing plate 7 through the cooperation of the second through hole 8 and the fixing rod 9, and the battery housing base 1 is connected to the fixing plate 7 through the fixing frame 6, and when the second through hole 8 is sleeved to the outside of the fixing rod 9, the guide block 12 will be slidably inserted into the inside of the guide groove 11.

[0050] Embodiment three:

[0051] like Figure 4-Figure 8 As shown, the structure of the lithium battery pack disclosed in the third embodiment of the present invention is basically the same as that in the second embodiment, except that:

[0052] The fixing grooves 13 are provided with a plurality of groups, and the plurality of groups of the fixing grooves 13 are evenly spaced up and down, and a second receiving groove 18 is provided at a position corresponding to one group of the fixing grooves 13 on the side wall of the guide block 12, and the insert block 16 is inserted and arranged inside the second receiving groove 18;

[0053] A second airbag 19 is disposed inside the second receiving groove 18. The second airbag 19 is fixedly disposed between the end of the insert block 16 and the inner wall of the second receiving groove 18. A matching first elastic member 20 is fixedly disposed inside the second airbag 19. A chamfered surface 17 is disposed on the lower end surface of one end of the insert block 16 away from the second airbag 19.

[0054] A first receiving groove 14 with an annular structure is provided on the lower end surface of the fixing frame 6 at a position corresponding to the insert block 16, a first airbag 15 matching with the first receiving groove 14 is provided inside, a second exhaust hole 22 is provided between the inside of the first airbag 15 and the inside of the second airbag 19, and the inside of the first airbag 15 is connected with the inside of the second airbag 19 through the second exhaust hole 22;

[0055] A countersunk hole 27 is provided at the top of the fixing frame 6 at a position corresponding to the insert block 16, and an air storage cavity 23 is provided at the bottom of the countersunk hole 27. A sealing gasket 24 is provided inside the air storage cavity 23 for sealing and sliding. A second elastic member 25 is provided between the bottom of the sealing gasket 24 and the bottom of the air storage cavity 23, and the sealing gasket 24 is elastically provided inside the air storage cavity 23 through the second elastic member 25.

[0056] A first exhaust hole 21 is provided between the air storage cavity 23 and the second air bag 19. The air storage cavity 23 is connected to the interior of the second air bag 19 through the first exhaust hole 21, and the first exhaust hole 21 is located below the sealing pad 24.

[0057] A matching pull rod 10 is inserted into the counterbore 27, and one end of the pull rod 10 is rotatably connected to the sealing gasket 24;

[0058] A limiting block 28 is provided on the outer surface of the pull rod 10 at a position corresponding to the inner wall of the counterbore 27, and a matching limiting groove 29 is provided on the inner wall of the counterbore 27 at a position corresponding to the limiting block 28, and the cross section of the limiting groove 29 is an "L"-shaped structure;

[0059] When the battery housing base 1 is fixed to the fixing plate 7 by the fixing frame 6, the first airbag 15 is squeezed, and the gas inside the first airbag 15 is discharged to the inside of the second airbag 19 and the air storage chamber 23. When the fixing frame 6 contacts the bottom of the fixing plate 7, the pull rod 10 is pressed down, and the sealing gasket 24 squeezes the gas inside the air storage chamber 23 to the inside of the second airbag 19. The second airbag 19 expands and pushes the plug 16 to the inside of the fixing groove 13. At this time, the pull rod 10 is rotated, and the pull rod 10 drives the limit block 28 to rotate inside the limit groove 29. When the limit block 28 rotates from the vertical groove of the limit groove 29 to the inside of the horizontal groove, the pull rod 10 can be vertically limited, and the purpose of quickly installing the battery housing base 1 is achieved.

[0060] The present scheme is specifically as follows: a battery cell and related components are arranged inside the battery housing base 1, and a battery output line 5 is connected to the battery cell and related components. One end of the battery output line 5 away from the battery cell and related components passes through the first through hole 4 and extends to the outside of the battery housing base 1. The connection between the battery housing base 1 and the battery housing upper cover 2 is sealed by filling glue. After the battery housing base 1 and the battery housing upper cover 2 are filled with glue and sealed, vacuum is drawn through the vacuum hole 3. After the vacuum is drawn, the vacuum hole 3 is sealed by filling glue, and the first through hole 4 and the battery output line 5 are sealed by filling glue, and polarity is marked with colored glue, so that the battery can achieve waterproof, dustproof, salt spray proof and other properties, so that it can meet the IP68 protection level;

[0061] When installing the battery case base 1, when the battery case base 1 is fixed to the fixing plate 7 through the fixing frame 6, the first airbag 15 is squeezed, and the gas inside the first airbag 15 is discharged to the inside of the second airbag 19 and the air storage chamber 23. When the fixing frame 6 contacts the bottom of the fixing plate 7, the pull rod 10 is pressed down, and the sealing gasket 24 squeezes the gas inside the air storage chamber 23 to the inside of the second airbag 19. The second airbag 19 expands and pushes the plug 16 to the inside of the fixing groove 13. At this time, the pull rod 10 is rotated, and the pull rod 10 drives the limit block 28 to rotate inside the limit groove 29. When the limit block 28 rotates from the vertical groove of the limit groove 29 to the inside of the horizontal groove, the pull rod 10 can be vertically limited, thereby achieving the purpose of quickly installing the battery case base 1.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0063] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A lithium battery pack, characterized in that: include: A battery housing base (1), wherein a matching battery housing upper cover (2) is arranged on the battery housing base (1), a vacuum hole (3) is provided on an upper end surface of one end of the battery housing upper cover (2), and a first through hole (4) is provided on an end of the battery housing upper cover (2) away from the vacuum hole (3); Two groups of fixing frames (6) are provided, and the two groups of fixing frames (6) are symmetrically distributed at the bottom of the battery housing base (1), and a fixing plate (7) is provided at one end of the fixing frame (6) away from the battery housing base (1), a fixing rod (9) is fixedly provided on the fixing plate (7), and a second through hole (8) is opened at a position of the fixing frame (6) corresponding to the fixing plate (7); The fixing assembly is arranged inside the fixing plate (7), and the fixing assembly comprises an elastically arranged plug block (16). A fixing groove (13) is provided on the side wall of the fixing rod (9) at a position corresponding to the plug block (16).

2. The lithium battery pack according to claim 1, characterized in that: The battery housing base (1) is provided with battery cells and related components inside, the battery cells and related components are connected to a battery output line (5), and one end of the battery output line (5) away from the battery cells and related components passes through the first through hole (4) and extends to the outside of the battery housing base (1).

3. The lithium battery pack according to claim 2, characterized in that: At least two groups of symmetrically distributed fixing rods (9) are provided on the upper surface of the fixing plate (7), and the size of the second through hole (8) matches the size of the fixing rod (9), and the fixing frame (6) is connected to the fixing plate (7) via the second through hole (8) and the fixing rod (9); The side wall of each fixing rod (9) is provided with two groups of symmetrically distributed guide grooves (11), and a matching guide block (12) is slidably arranged inside each guide groove (11), and the guide block (12) is connected to the inner wall of the second through hole (8).

4. The lithium battery pack according to claim 3, characterized in that: The fixing grooves (13) are provided in a plurality of groups, and the plurality of groups of the fixing grooves (13) are evenly spaced and distributed vertically, and a second receiving groove (18) is provided on the side wall of the guide block (12) at a position corresponding to one group of the fixing grooves (13), and the insert block (16) is inserted and arranged inside the second receiving groove (18); A second airbag (19) is arranged inside the second receiving groove (18), and the second airbag (19) is fixedly arranged between the end of the plug block (16) and the inner wall of the second receiving groove (18), and a matching first elastic member (20) is fixedly arranged inside the second airbag (19), and a chamfered surface (17) is arranged on the lower end surface of one end of the plug block (16) away from the second airbag (19).

5. The lithium battery pack according to claim 4, characterized in that: A first receiving groove (14) in an annular structure is provided on the lower end surface of the fixing frame (6) at a position corresponding to the insert block (16); a matching first airbag (15) is provided inside the first receiving groove (14); a second exhaust hole (22) is provided between the interior of the first airbag (15) and the interior of the second airbag (19); the interior of the first airbag (15) is connected to the interior of the second airbag (19) through the second exhaust hole (22).

6. The lithium battery pack according to claim 5, characterized in that: A countersunk hole (27) is provided at the top of the fixing frame (6) at a position corresponding to the insert block (16); an air storage cavity (23) is provided at the bottom of the countersunk hole (27); a sealing gasket (24) is provided inside the air storage cavity (23) for sealing and sliding; a second elastic member (25) is provided between the bottom of the sealing gasket (24) and the bottom of the air storage cavity (23); the sealing gasket (24) is elastically provided inside the air storage cavity (23) through the second elastic member (25); A first exhaust hole (21) is provided between the air storage cavity (23) and the second air bag (19); the air storage cavity (23) is connected to the interior of the second air bag (19) through the first exhaust hole (21); and the first exhaust hole (21) is located below the sealing pad (24).

7. The lithium battery pack according to claim 6, characterized in that: A matching pull rod (10) is inserted into the interior of the countersunk hole (27), and one end of the pull rod (10) is rotatably connected to the sealing gasket (24); A limiting block (28) is arranged on the outer surface of the pull rod (10) at a position corresponding to the inner wall of the countersunk hole (27), and a matching limiting groove (29) is opened on the inner wall of the countersunk hole (27) at a position corresponding to the limiting block (28), and the cross section of the limiting groove (29) is an "L"-shaped structure.

Images