Modular battery

Abstract

The utility model discloses a modularized battery which comprises N small battery modules and a diversion box, and N is an integer not less than 2; the whole assembling process of the modularized battery is simple and rapid, the capacity of the single battery cells and the string number of the small battery modules can be increased according to requirements, so that the required capacity and voltage requirements are met, other parts do not need to be replaced, and universality and modularization are achieved. When the module battery breaks down, the small battery module can be directly replaced due to the fact that the module battery is simple in structure, convenient to disassemble and very easy to maintain, the maintenance reliability is high, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery technical field, concretely relates to a kind of modular battery, and it can be used for unmanned aerial vehicle, vehicle-mounted power, special equipment etc. BACKGROUND

[0002] At present, with the rapid development of unmanned aerial vehicle, new energy automobile, special equipment and other technical fields, lithium battery module is widely used.In some specific application scenarios, for example, unmanned aerial vehicle, i.e.the unmanned aircraft used for forestry plant protection operation, lithium battery pack needs high rate high power discharge, resulting in battery pack heat rapidly, temperature rise.

[0003] But due to the strict requirement of lithium battery charging to temperature, battery pack natural cooling to chargeable temperature needs long time, so in order to continuous uninterrupted operation, more battery pack needs to be reserved to meet production requirement, and production cost will rise.

[0004] There are also some lithium battery packs with metal shell to accelerate heat dissipation on the market, but in order to prevent water sealing overvoltage part is all for glue filling, and series-parallel connection is mostly laser welding, although the function meets the requirement, but when fault occurs, it is difficult to repair and the cost is high, and it can only be directly scrapped.

[0005] Therefore, a kind of modular battery with high cooling efficiency, high assembly efficiency, good interchangeability and repairability is needed. UTILITY MODEL CONTENT

[0006] The technical problem to be solved by the utility model is to provide a kind of modular battery with high cooling efficiency, high assembly efficiency, good interchangeability and repairability, and simple structure and reasonable design.

[0007] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0008] A modular battery, characterized by comprising N small battery modules, a flow guide box, wherein N is an integer not less than 2; the flow guide box is composed of a flow guide box bottom cover and a flow guide box top cover, the flow guide box bottom cover is provided with an open clamping groove; the flow guide box further comprises a total positive copper bar, a total negative copper bar and a series copper bar, the series copper bar is provided with series spring sheets, the series spring sheets of the series copper bar are inserted into the open clamping groove of the flow guide box bottom cover; the total positive copper bar is provided with a total positive spring sheet and located at one side of the flow guide box, the total positive spring sheet is inserted into the open clamping groove at one end of the flow guide box bottom cover; the total negative copper bar is provided with a total negative spring sheet and located at the other side of the flow guide box, the total negative spring sheet is inserted into the open clamping groove at the other end of the flow guide box bottom cover, and the total positive copper bar and the total negative copper bar are further respectively provided with connecting holes; the total positive copper bar is connected with the positive electrode of the first small battery module in the N small battery modules, the total negative copper bar is connected with the negative electrode of the Nth small battery module in the N small battery modules, and the N small battery modules are connected in series through the series copper bar.

[0009] The small battery module comprises two battery monomers, a metal shell, a plastic top sealing piece and two welded copper bars.

[0010] The small battery module comprises two battery monomers, a metal shell, a plastic top sealing piece and two welded copper bars.

[0011] The small battery module comprises two battery monomers, a metal shell, a plastic top sealing piece and two welded copper bars.

[0012] The small battery module comprises two battery monomers, a metal shell, a plastic top sealing piece and two welded copper bars.

[0013] The small battery module comprises two battery monomers, a metal shell, a plastic top sealing piece and two welded copper bars.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1、The utility model discloses a small battery module is preassembled by two single cells, realizes cell modularization, can realize quick assembly, increase and decrease, replacement and the like requirements;

[0016] 2、The utility model discloses a flow guide box is fast insertion type design, and the internal series copper bar and total positive copper bar and total negative copper bar are the design of elastic sheet, before not inserting small battery module, the elastic sheet is mutually resisted together due to the elastic force, similar to a connected wire, after inserting small battery module, the elastic sheet is opened, and is resisted on the battery copper sheet, and the series small battery module is pulled out, and the elastic sheet is again resisted together, realizes the intercommunication, so can increase and decrease small battery module at will and need not change other parts;

[0017] 3、The utility model discloses a fixed support of outer frame body is equipped with guide rail clamping, only need to insert small battery module along the clamping and can complete installation, simple and convenient operation, and the clamping baffle separates small battery module, and the gap of separation is used as the heat dissipation air duct, and accelerates the heat dissipation of battery pack in the use and charging process.

[0018] 4、The utility model discloses a small battery module upper part seal stopper and the design of rubber sealing ring on the flow guide box, realizes the function of sealing waterproof.

[0019] In summary, the utility model discloses simple structure, convenient dismounting, good interchangeability, reasonable in design, low in manufacturing cost, and is suitable for widely used. DRAWINGS

[0020] Figure 1 It is the overall assembly schematic diagram of the utility model.

[0021] Figure 2 It is the overall assembly schematic diagram of the utility model.

[0022] Figure 3 It is the structure schematic diagram of total positive copper bar, total negative copper bar and series copper bar of the utility model.

[0023] Mark explanation:

[0024] 1-small battery module;2-flow guide box bottom cover;3-1-total positive copper bar;

[0025] 3-2-total negative copper bar;4-series copper bar;5-flow guide box upper cover;

[0026] 6-outer frame body fixed support;7-flow guide box. Specific implementation

[0027] For example, Figure 1 And 2As shown, it is the whole assembly schematic drawing of the utility model, including: 8 small battery module 1, diversion box 7;Diversion box 7 is by diversion box bottom cover 2, diversion box upper cover 5 is formed, and diversion box bottom cover 2 is equipped with opening clamping groove;Diversion box 7 inside still includes total positive pole copper bar 3-1, total negative pole copper bar 3-2 and series copper bar 4, and series copper bar 4 is provided with series spring leaf, and the series spring leaf of series copper bar 4 is inserted into the opening clamping groove of diversion box bottom cover 2;Total positive pole copper bar 3-1 is provided with total positive pole spring leaf and is located at one side of diversion box 7, and the total positive pole spring leaf is inserted into the opening clamping groove at one end of diversion box bottom cover 2;Total negative pole copper bar 3-2 is provided with total negative pole spring leaf and is located at the other side of diversion box 7, and the total negative pole spring leaf is inserted into the opening clamping groove at the other end of diversion box bottom cover 2, and total positive pole copper bar 3-1 and total negative pole copper bar 3-2 are also respectively provided with connecting hole;Total positive pole copper bar 3-1 is connected with the positive pole of the first small battery module of 1 small battery module 1, and total negative pole copper bar 3-2 is connected with the negative pole of the 8th small battery module of 8 small battery module 1, and 8 small battery module 1 is connected by series copper bar 4.

[0028] Small battery module 1 includes two battery monomers, a metal shell, a plastic top sealing piece, and two welded copper bars. The two battery monomers are connected in series inside the metal shell. The tab of the two connected battery monomers is welded on the two welded copper bars. The plastic top sealing piece is arranged on the top and bottom surfaces of the metal shell.

[0029] The two welded copper bars of the small battery module 1 are connected to the series spring leaf of the series copper bar 4. The top of the small battery module 1 is also provided with a screw hole, and a rubber sealing ring is arranged around the screw hole. The small battery module 1 is connected to the diversion box 7 by a screw, and the rubber sealing ring fills the gap between the small battery module 1 and the diversion box 7.

[0030] One side of the outer frame body fixing support 6 is provided with a clamping groove, and one side of the metal shell of the small battery module 1 is provided with a guide groove. The groove of the small battery module 1 is engaged with the clamping groove of the outer frame body fixing support 6.

[0031] When the utility model is used, the diversion box upper cover 5 and the diversion box bottom cover 2 are connected by a screw. Multiple small battery modules 1 are inserted into the opening clamping groove of the diversion box bottom cover 2 in parallel. The guide groove of the small battery module 1 is inserted vertically along the clamping groove of the outer frame body fixing support 6.

[0032] After installing multiple small battery modules 1, the diversion box 7 is aligned with the opening clamping groove of the diversion box bottom cover 2 from above the small battery module 1 and is pressed tightly. The small battery module 1 is inserted into the series spring leaf of the series copper bar 4, and the small battery modules at both ends are fixed on the total positive pole copper bar and the total negative pole copper bar on both sides by a screw. In this way, the small battery modules 1 are electrically connected and conductive, and the small battery modules 1 are structurally fixed.

[0033] AsFigure 3 As shown, the flow guide box 7 is designed as a socket, the total positive copper bar 3-1 and the total negative copper bar 3-2 and the series copper bar 4 are designed as spring sheets, that is, before the small battery module 1 is inserted, the spring sheets are pressed against each other due to the elastic force, in the electrical aspect, it is similar to a continuous wire, after the small battery module is inserted, the spring sheets are stretched and pressed against the battery copper sheet, in the electrical aspect, it is series connected with each small battery module, thereby realizing the function of increasing or decreasing the small battery module without replacing other components according to the utility model. In addition, the total positive copper bar 3-1 and the total negative copper bar 3-2 are provided with mounting holes, which are convenient for the external power equipment to connect power.

[0034] It should be noted that the small battery module 1 is sealed by plastic top sealing element and fixed by screws, the cell tab is laser welded on the copper bar, and is pre-assembled as a whole, thereby realizing the modularization function of the small battery.

[0035] It should be noted that the outer frame fixing support 6 is a hollow metal structure with fixed clamping positions, which can be fixed and installed in the battery compartment reserved by the power equipment by screws, or can be used as a structural member to bear weight, the lower part has a structural limit for the lower limit position after the small battery module 1 is inserted, the upper part has a screw mounting hole for the upper limit position after the small battery module 1 is inserted, the small battery module 1 is directly inserted and taken in the clamping position, and the user can determine the number of clamping slots of the outer frame fixing support 6 according to the demand.

[0036] In summary, the modular battery proposed by the utility model has the advantages of simple and fast assembly process, and can increase the capacity of single cell and the series number of small battery module according to the demand to meet the required capacity and voltage requirement without replacing other components, thereby realizing universality and modularization. When the modular battery fails, due to its simple structure, convenient disassembly, high reliability and low maintenance cost, the small battery module can be directly replaced, and the maintenance is very simple.

[0037] The above is only a preferred embodiment of the utility model, and does not limit the utility model, any simple modification, change and equivalent structure change according to the technical essence of the utility model are still within the protection scope of the utility model technical scheme.

Claims

1. A modular battery, characterized in that: It includes N small battery modules (1) and a current guide box (7), where N is an integer not less than 2; The flow guide box (7) includes a flow guide box bottom cover (2) and a flow guide box top cover (5), and the flow guide box bottom cover (2) is provided with an opening slot; The flow guide box (7) also includes a total positive copper busbar (3-1), a total negative copper busbar (3-2) and a series copper busbar (4). The series copper busbar (4) is provided with a series spring, and the series spring of the series copper busbar (4) is inserted into the opening slot of the bottom cover (2) of the flow guide box. The positive electrode copper busbar (3-1) is provided with a positive electrode spring and is located on one side of the current guide box (7). The positive electrode spring is inserted into the opening slot at one end of the bottom cover (2) of the current guide box. The main negative electrode copper busbar (3-2) is provided with a main negative electrode spring piece and is located on the other side of the current guide box (7). The main negative electrode spring piece is inserted into the opening slot at the other end of the bottom cover (2) of the current guide box. The main positive electrode copper busbar (3-1) and the main negative electrode copper busbar (3-2) are also provided with connection holes respectively. The total positive copper busbar (3-1) is connected to the positive terminal of the first small battery module in the N small battery modules (1), and the total negative copper busbar (3-2) is connected to the negative terminal of the Nth small battery module in the N small battery modules (1). The N small battery modules (1) are connected in series through the series copper busbar (4).

2. A modular battery according to claim 1, characterized in that: The small battery module (1) includes two individual battery cells, a metal casing, a plastic top seal, and two welded copper busbars; The two battery cells are connected in series inside the metal casing, and the tabs of the two battery cells are respectively welded to the two copper busbars. The plastic top seal is provided on the top and bottom surfaces of the metal casing.

3. A modular battery according to claim 2, characterized in that: The modular battery is also provided with an outer frame fixing bracket (6), and a slot is provided on one side of the outer frame fixing bracket (6). A guide rail groove is provided on one side of the metal shell of the small battery module (1). The groove of the small battery module (1) is engaged with the slot of the outer frame fixing bracket (6).

4. A modular battery according to claim 3, characterized in that: The two welded copper busbars of the small battery module (1) are plugged into the series spring contacts of the series copper busbar (4). The top of the small battery module (1) is also provided with screw holes and rubber sealing rings are provided around the screw holes. The small battery module (1) is connected to the current guide box (7) by screws and the rubber sealing rings fill the gap between the small battery module (1) and the current guide box (7).

5. A modular battery according to claim 4, characterized in that: The outer frame fixing bracket (6) is a hollow metal structure with a fixing slot. The lower part is provided with a structural limit and the upper part is provided with screw mounting holes. The metal shell of the small battery module (1) is inserted into the fixing slot.

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