Lithium battery pack convenient for floating positioning

Abstract

The utility model discloses a lithium battery pack convenient for floating positioning, which relates to the technical field of electrochemical energy storage and comprises a plug, a floating positioning mechanism and a battery pack, the plug is fixed on the cabinet body, and the floating positioning mechanism is arranged on a shell of the battery pack; the floating positioning mechanism comprises a fixing piece, a guide piece, a floating socket and a stepped bolt; a guide piece and a fixing piece are arranged between the floating socket and the battery pack, the fixing piece is fixedly connected with a shell of the battery pack, and the guide piece is arranged between the fixing piece and the floating socket; through holes are formed in the fixing piece, the guiding piece and a shell of the battery pack, and the through holes are matched with the floating socket; during assembly, the input end of the floating socket sequentially penetrates through the guide piece, the fixing piece and the shell of the battery pack and is connected with the output end of the battery pack; the floating socket can float relative to the through hole, so that the floating socket can be accurately matched with a plug; through cooperation of the plug and the floating socket, connection and disconnection of current are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage, in particular to a lithium battery pack which is convenient for floating positioning. Background Art

[0002] At present, most energy storage systems achieve the required voltage or capacity by connecting lithium battery packs in series. Generally, more than 10 to 20 battery packs are connected in series and parallel and integrated into a large cabinet.

[0003] In the prior art, in order to facilitate the maintenance of the battery pack in the future, these battery packs are often fastened with series copper bars by bolts to form the required circuit. When maintenance is required, the bolts are unscrewed with tools, the series copper bars are removed, and the battery pack is pulled out of the cabinet for maintenance.

[0004] The above method of fastening the series copper busbars by bolts is not only cumbersome, but also has certain safety hazards. There is even a risk of short circuit due to improper operation during disassembly or installation.

[0005] Even if some battery packs are connected using a plug and socket, there are often errors in the processing of the socket parts, which results in the plug being unable to accurately dock with the socket. Utility Model Content

[0006] In view of the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a lithium battery pack that is easy to float and position, so as to solve the technical problems in the above-mentioned prior art such as "the method of fastening the series copper busbars by bolts is too cumbersome to install or disassemble, and there are certain safety hazards. There is even a risk of short circuit due to improper operation during disassembly or installation, and the method of using plugs and sockets often results in errors in the processing of socket parts, which makes it impossible for the plug to be accurately connected to the socket."

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A lithium battery pack that is easy to float and position comprises: a plug, a floating positioning mechanism and a battery pack; the plug is fixed on a cabinet, and the floating positioning mechanism is arranged on a shell of the battery pack;

[0009] The floating positioning mechanism includes a fixing member, a guide member, a floating socket and a stepped bolt;

[0010] A guide member and a fixing member are provided between the floating socket and the battery pack, the fixing member is fixedly connected to the shell of the battery pack, and the guide member is provided between the fixing member and the floating socket; through holes are provided on the fixing member, the guide member, and the shell of the battery pack, and the through holes are adapted to the floating socket;

[0011] During assembly, the input end of the floating socket is passed through the guide, the fixing part, and the battery pack housing in sequence, and connected to the output end of the battery pack;

[0012] The floating socket can float relative to the through hole, so as to facilitate accurate matching with the plug;

[0013] The plug cooperates with the floating socket to realize the connection and disconnection of the current.

[0014] The beneficial effects of the above technical solution are as follows: compared with the prior art, the lithium battery pack that is convenient for floating positioning has made effective improvements to the overall structure and assembly method of the plug, floating positioning mechanism and battery pack, and adopts a connection method between the plug and the floating socket to ensure that the battery pack is easy to install or remove; a floating positioning mechanism is provided on the battery pack, and the fixing parts, guide parts, floating sockets and stepped bolts of the floating positioning mechanism cooperate with each other to ensure that even if there are errors in the processing of the socket parts, the plug and the socket are still accurately connected, and the technical problems such as the risk of short circuit that is easy to occur due to improper operation when the battery pack is disassembled or installed are prevented, so as to solve the technical problems such as "the method of fastening the series copper busbars with bolts is too cumbersome to install or remove, and there are certain safety hazards, and even during disassembly or installation, there is a risk of short circuit that is easy to occur due to improper operation, and the method of using plugs and sockets often has errors in the processing of the socket parts, which makes the plug unable to accurately connect with the socket".

[0015] In a preferred embodiment, a plurality of first fixing holes are provided on the shell of the battery pack, and the first fixing holes are arranged around the through hole;

[0016] The fixing piece is provided with a second fixing hole;

[0017] The guide member is provided with a third fixing hole;

[0018] The floating socket is provided with a fourth fixing hole;

[0019] Furthermore, the first fixing hole, the second fixing hole, the third fixing hole, and the fourth fixing hole are the same in number and have corresponding positions;

[0020] The stepped bolt comprises a cylindrical rod and a threaded rod at the end, wherein the diameter of the cylindrical rod is greater than the diameter of the threaded rod;

[0021] Furthermore, the inner diameters of the third fixing hole and the fourth fixing hole are the same, and the inner diameters of the third fixing hole and the fourth fixing hole are 1 to 5 mm larger than the diameter of the cylindrical rod;

[0022] The inner diameters of the first fixing hole and the second fixing hole are the same, and the inner diameters of the first fixing hole and the second fixing hole are adapted to the threaded rod;

[0023] During assembly, the stepped bolt passes through the fourth fixing hole and the third fixing hole in sequence, and is fixedly connected with the second fixing hole and the first fixing hole.

[0024] The beneficial effects of the above technical solution are as follows: by providing a plurality of first fixing holes on the battery pack shell, a second fixing hole on the fixing piece, a third fixing hole on the guide piece, and a fourth fixing hole on the floating socket, the inner diameters of the first fixing hole and the second fixing hole are the same and are compatible with the stepped bolts, and the inner diameters of the third fixing hole and the fourth fixing hole are 1 to 5 mm larger than the diameter of the stepped bolts, so as to ensure that the floating socket can float up, down, left, and right relative to the battery pack shell, the fixing piece, and the guide piece.

[0025] In a preferred embodiment, the housing, the fixing member and the guide member of the battery pack are respectively provided with a first through hole, a second through hole and a third through hole;

[0026] The first through hole, the second through hole and the third through hole have the same size and are larger than the size of the floating socket input end.

[0027] The beneficial effects of the above technical solution are as follows: by respectively providing the first through hole, the second through hole and the third through hole on the shell, the fixing part and the guide part of the battery pack, and the size of the three through holes is larger than the size of the input end of the floating socket, it is ensured that the floating socket can float up and down and left and right relative to the through holes.

[0028] In a preferred solution, a positioning pin is provided on the plug, and the positioning pin is arranged close to one side of the floating socket.

[0029] The beneficial effect of the above technical solution is that by providing a positioning pin on the plug, accurate positioning between the plug and the floating socket is ensured.

[0030] In a preferred solution, the locating pins are provided in a plurality and are symmetrically arranged.

[0031] The beneficial effect of the above technical solution is that by providing a plurality of positioning pins, the precise positioning between the plug and the floating socket is further ensured.

[0032] In a preferred solution, a positioning hole is provided on the floating socket, and the positioning hole matches the positioning pin.

[0033] The beneficial effect of the above technical solution is that by providing a positioning hole on the floating socket, the positioning hole and the positioning pin cooperate with each other to ensure the precise positioning between the plug and the floating socket, and further ensure the stability between the plug and the floating socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the prior art description will be briefly introduced below. Obviously, the drawings described below are some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 An exploded schematic diagram of the overall assembly of a lithium battery pack that is convenient for floating positioning provided in Example 1 of the utility model;

[0036] Figure 2 This is a schematic diagram of the assembly of the floating positioning mechanism provided in Example 1 of the utility model;

[0037] Figure 3 An exploded schematic diagram of the overall assembly of the battery pack, the floating positioning mechanism, and the plug provided in Example 1 of the utility model;

[0038] Figure 4 A schematic diagram of the assembly of the plug and floating socket provided in Example 1 of the utility model;

[0039] Description of reference numerals;

[0040] 1-plug; 2-floating positioning mechanism; 21-fixing piece; 22-guide piece; 23-floating socket; 24-step bolt; 3-battery pack; 31-first fixing hole; 4-input end; 5-second fixing hole; 6-third fixing hole; 7-fourth fixing hole; 8-first through hole; 9-second through hole; 10-third through hole; 11-locating pin; 12-locating hole. DETAILED DESCRIPTION

[0041] Example 1

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0043] like Figures 1 to 4 As shown, a lithium battery pack that is convenient for floating positioning includes a plug 1, a floating positioning mechanism 2 and a battery pack 3; the plug 1 is fixed on a cabinet, and the floating positioning mechanism 2 is arranged on a shell of the battery pack 3;

[0044] The floating positioning mechanism 2 includes a fixing member 21, a guide member 22, a floating socket 23 and a stepped bolt 24;

[0045] Specifically, a guide member 22 and a fixing member 21 are provided between the floating socket 23 and the battery pack 3. The fixing member 21 is fixedly connected to the housing of the battery pack 3, and the guide member 22 is provided between the fixing member 21 and the floating socket 23. Through holes are provided on the fixing member 21, the guide member 22, and the housing of the battery pack 3, and the through holes are adapted to the floating socket 23.

[0046] During assembly, the input end 4 of the floating socket 23 is passed through the guide member 22, the fixing member 21, and the housing of the battery pack 3 in sequence, and connected to the output end of the battery pack 3;

[0047] The floating socket 23 can float relative to the through hole, so as to facilitate accurate matching with the plug 1;

[0048] The current is connected and disconnected by cooperating with the plug 1 and the floating socket 23; the overall structure and assembly method of the plug 1, the floating positioning mechanism 2 and the battery pack 3 are effectively improved, and the connection method of the plug 1 and the floating socket 23 is adopted to ensure that the installation or removal process of the battery pack 3 is simple; a floating positioning mechanism 2 is provided on the battery pack 3, and the fixing part 21, the guide part 22, the floating socket 23 and the stepped bolt 24 of the floating positioning mechanism 2 cooperate with each other to ensure that even if there are errors in the processing of the socket parts, the plug 1 and the socket are still accurately connected, and technical problems such as the risk of short circuit due to improper operation when the battery pack 3 is disassembled or installed are prevented.

[0049] In this embodiment, a plurality of first fixing holes 31 are provided on the shell of the battery pack 3, and the first fixing holes 31 are arranged around the through hole;

[0050] Specifically, the fixing member 21 is provided with a second fixing hole 5;

[0051] The guide member 22 is provided with a third fixing hole 6;

[0052] The floating socket 23 is provided with a fourth fixing hole 7;

[0053] The first fixing holes 31, the second fixing holes 5, the third fixing holes 6, and the fourth fixing holes 7 are the same in number and have corresponding positions;

[0054] Specifically, the stepped bolt 24 includes a cylindrical rod and a threaded rod at the end, and the diameter of the cylindrical rod is greater than the diameter of the threaded rod;

[0055] The inner diameters of the third fixing hole 6 and the fourth fixing hole 7 are the same, and the inner diameters of the third fixing hole 6 and the fourth fixing hole 7 are 1 to 5 mm larger than the diameter of the cylindrical rod;

[0056] The inner diameters of the first fixing hole 31 and the second fixing hole 5 are the same, and the inner diameters of the first fixing hole 31 and the second fixing hole 5 are adapted to the threaded rod;

[0057] During assembly, the stepped bolt 24 passes through the fourth fixing hole 7 and the third fixing hole 6 in sequence, and is fixedly connected with the second fixing hole 5 and the first fixing hole 31; by providing a plurality of first fixing holes 31 on the shell of the battery pack 3, a second fixing hole 5 on the fixing member 21, a third fixing hole 6 on the guide member 22, and a fourth fixing hole 7 on the floating socket 23, the inner diameters of the first fixing hole 31 and the second fixing hole 5 are the same and are compatible with the stepped bolt 24, and the inner diameters of the third fixing hole 6 and the fourth fixing hole 7 are larger than the diameter of the stepped bolt 24 by 1 to 5 mm, so as to ensure that the floating socket 23 can float up and down, left and right relative to the shell, the fixing member 21 and the guide member 22 of the battery pack 3.

[0058] In this embodiment, the housing of the battery pack 3, the fixing member 21, and the guide member 22 are respectively provided with a first through hole 8, a second through hole 9, and a third through hole 10;

[0059] Specifically, the first through hole 8, the second through hole 9 and the third through hole 10 have the same size and are larger than the size of the input end 4 of the floating socket 23; the first through hole 8, the second through hole 9 and the third through hole 10 are respectively provided on the shell, the fixing member 21 and the guide member 22 of the battery pack 3, and the sizes of the three through holes are larger than the size of the input end of the floating socket 23, so as to ensure that the floating socket 23 can float up, down, left and right relative to the through holes.

[0060] In this embodiment, a positioning pin 11 is provided on the plug 1 , and the positioning pin 11 is arranged close to one side of the floating socket 23 . By providing the positioning pin 11 on the plug 1 , accurate positioning between the plug 1 and the floating socket 23 is ensured.

[0061] In this embodiment, a plurality of positioning pins 11 are provided, and they are symmetrically arranged. By providing a plurality of positioning pins 11 , accurate positioning between the plug 1 and the floating socket 23 is further ensured.

[0062] In this embodiment, a positioning hole 12 is provided on the floating socket 23, and the positioning hole 12 matches the positioning pin 11; by providing the positioning hole 12 on the floating socket 23, the positioning hole 12 and the positioning pin 11 cooperate with each other to ensure the precise positioning between the plug 1 and the floating socket 23, and further ensure the stability between the plug 1 and the floating socket 23.

[0063] In this embodiment, a trapezoidal protrusion is further provided in the plug 1, and a trapezoidal groove adapted to the trapezoidal protrusion is provided in the floating socket 23; by providing the trapezoidal protrusion and the trapezoidal groove, it is ensured that the positive and negative poles of the battery are prevented from being connected in reverse, and the stability between the plug 1 and the floating socket 23 is further ensured.

[0064] In this embodiment, the plug 1 and the floating socket 23 are both designed to be sealed with insulating plastic to prevent water and foreign matter from entering, and have high insulation strength to ensure electrical safety.

[0065] In this embodiment, the stepped bolt 24 is made of stainless steel, which has high strength and is not prone to corrosion.

[0066] In this embodiment, the guide member 22 is formed by laser cutting of a stainless steel plate; when the floating socket 23 is docked with the plug 1, the guide member 22 is used to ensure that the floating socket 23 does not shake significantly and is within the allowable tolerance range to ensure reliable connection with the plug 1.

[0067] In this embodiment, the fixing member 21 is formed by laser cutting of a stainless steel plate; the floating socket 23 , the guide member 22 and the fixing member 21 are connected together by stepped bolts 24 to ensure that the socket 1 can be positioned on the battery pack 3 .

[0068] In this embodiment, the battery pack 3 is the core component of the energy storage device, and its shell is made of bent and welded steel plates; the current of the battery pack is output to the outside after the plug 1 and the floating socket 23 are connected. The floating socket 23 is fixed to the battery pack 3 through the guide member 22 and the fixing member 21. During the connection process with the plug 1, a small amount of floating is used to ensure the reliable connection of the plug and socket.

[0069] Specific usage of this utility model:

[0070] Step 1: The input end 4 of the floating socket 23 passes through the guide member 22, the fixing member 21, and the housing of the battery pack 3 in sequence, and is connected to the output end of the battery pack 3;

[0071] Step 2: Pass the stepped bolt 24 through the fourth fixing hole 7 and the third fixing hole 6 in sequence, and fix them with the second fixing hole 5 and the first fixing hole 31;

[0072] Step 3: Adjust the floating positioning mechanism 2 on the battery pack 3 so that the floating socket 23 corresponds to the position of the plug 1;

[0073] Step 4: Connect the battery pack 3 with the floating positioning mechanism 2 installed to the plug 1 fixed on the cabinet;

[0074] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0075] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention.

[0076] The above are only preferred implementations of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as protection of the utility model.

Claims

1. A lithium battery pack that is easy to float and position, characterized in that: It comprises a plug (1), a floating positioning mechanism (2) and a battery pack (3); the plug (1) is fixed on a cabinet, and the floating positioning mechanism (2) is arranged on a shell of the battery pack (3); The floating positioning mechanism (2) comprises a fixing member (21), a guide member (22), a floating socket (23) and a stepped bolt (24); A guide member (22) and a fixing member (21) are provided between the floating socket (23) and the battery pack (3); the fixing member (21) is fixedly connected to the shell of the battery pack (3); the guide member (22) is provided between the fixing member (21) and the floating socket (23); through holes are provided on the fixing member (21), the guide member (22) and the shell of the battery pack (3), and the through holes are adapted to the floating socket (23); During assembly, the input end (4) of the floating socket (23) is passed through the guide member (22), the fixing member (21), and the housing of the battery pack (3) in sequence, and is connected to the output end of the battery pack (3); The floating socket (23) can float relative to the through hole, so as to facilitate accurate matching with the plug (1); The plug (1) cooperates with the floating socket (23) to realize the connection and disconnection of the current.

2. A lithium battery pack that facilitates floating positioning according to claim 1, characterized in that: A plurality of first fixing holes (31) are provided on the shell of the battery pack (3), and the first fixing holes (31) are arranged around the through hole; The fixing member (21) is provided with a second fixing hole (5); The guide member (22) is provided with a third fixing hole (6); The floating socket (23) is provided with a fourth fixing hole (7); The first fixing holes (31), the second fixing holes (5), the third fixing holes (6), and the fourth fixing holes (7) are the same in number and have corresponding positions; The stepped bolt (24) comprises a cylindrical rod and a threaded rod at the end, wherein the diameter of the cylindrical rod is greater than the diameter of the threaded rod; The inner diameters of the third fixing hole (6) and the fourth fixing hole (7) are the same, and the inner diameters of the third fixing hole (6) and the fourth fixing hole (7) are 1 to 5 mm larger than the diameter of the cylindrical rod; The inner diameters of the first fixing hole (31) and the second fixing hole (5) are the same, and the inner diameters of the first fixing hole (31) and the second fixing hole (5) are adapted to the threaded rod; During assembly, the stepped bolt (24) passes through the fourth fixing hole (7) and the third fixing hole (6) in sequence, and is fixedly connected to the second fixing hole (5) and the first fixing hole (31).

3. A lithium battery pack that facilitates floating positioning according to claim 1, characterized in that: The housing, the fixing member (21) and the guide member (22) of the battery pack (3) are respectively provided with a first through hole (8), a second through hole (9) and a third through hole (10); The first through hole (8), the second through hole (9) and the third through hole (10) have the same size and are larger than the size of the input end (4) of the floating socket (23).

4. A lithium battery pack that facilitates floating positioning according to claim 1, characterized in that: The plug (1) is provided with a positioning pin (11), and the positioning pin (11) is arranged close to one side of the floating socket (23).

5. A lithium battery pack that facilitates floating positioning according to claim 4, characterized in that: The positioning pins (11) are provided in a plurality and are symmetrically arranged.

6. A lithium battery pack that facilitates floating positioning according to claim 4 or 5, characterized in that: The floating socket (23) is provided with a positioning hole (12), and the positioning hole (12) matches the positioning pin (11).

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