Quick circuit breaker, battery module and electric vehicle

Abstract

The utility model belongs to the technical field of new energy automobiles, and particularly relates to a quick circuit breaker, a battery module and an electric automobile, which comprise a base, an arc extinguishing shell is arranged at the top end of the base, a top cover is arranged at the top end of the arc extinguishing shell, and the base, the arc extinguishing shell and the top cover are communicated with one another; the impact assembly comprises a fire plug and an impact part, the fire plug is connected in the top cover in a sliding mode, the impact part is arranged at the end, located in the top cover, of the fire plug, a conducting strip is arranged in the arc extinguishing shell, a containing groove is formed in the other end of the fire plug, and explosives are placed in the containing groove; the two partition plates are fixedly connected in the base and divide the interior of the base into three arc extinguishing chambers, and when the explosive in the containing groove is detonated, the fire plug is pushed to drive the impact piece to cut off the conducting strip, so that the cut-off position of the conducting strip extends into the arc extinguishing chambers. The device is simple in structure, low in cost, high in safety and capable of achieving quick power failure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to new energy automobile technical field, especially quick breaker, battery module and electric automobile. BACKGROUND

[0002] Breaker is also called fuse, fuse is the safety protection function in the electric power system one kind of electric appliance, when current exceeds the stipulated value, with the heat produced by itself make the fuse body fuse, open the circuit one kind of protection device. Fuse is by fuse, fuse tube, contact etc., divide into high voltage fuse and low voltage fuse [3], have small size, convenient to use and low price etc. Advantage, widely used in low voltage distribution system, power device of industrial and mining enterprises, instrument, household electricity circuit and electrical equipment etc.

[0003] At present, the fuse of electric vehicle is generally large in size, complex in structure and high in cost, which does not meet the development trend of single element miniaturization, and the fuse of electric vehicle at present is broken due to the large current before breaking, which will produce arc, the fuse in the prior art cannot carry out quick arc extinguishing and power off processing, thereby causing great safety hazard.

[0004] Therefore, it is necessary to design a quick breaker, a battery module and an electric vehicle to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of quick breaker to solve the above problems, to reach the purpose of improving the safety of battery module and electric vehicle.

[0006] To achieve the above object, the utility model provides the following scheme: a kind of quick breaker, comprising:

[0007] Base, top end is equipped with arc extinguishing shell, the top of the arc extinguishing shell is provided with top cover, the base, the arc extinguishing shell and the top cover are communicated between;

[0008] Impact assembly, including fire plug and impact piece, the fire plug is slidably connected in the top cover, the impact piece is arranged at one end of the fire plug in the top cover, the arc extinguishing shell is provided with conducting strip, the other end of the fire plug is equipped with accommodating groove, the accommodating groove is placed with explosive;

[0009] Two partition plates, fixedly connected in the base, and the base is divided into three arc extinguishing compartments, wherein, when the explosive in the accommodating groove is detonated, the fire plug is pushed to drive the impact piece to cut off the conducting strip, so that the cut-off of the conducting strip extends into the arc extinguishing compartment.

[0010] According to the utility model provide a kind of quick breaker, the impact piece includes three knife heads, three The knife head is fixedly connected at one end of the fire plug, three The knife head is respectively corresponding with three The arc extinguishing chamber, and the knife head located in middle portion is identical in size with the arc extinguishing chamber located in middle portion.

[0011] According to the utility model provide a kind of quick breaker, the fire plug outer wall is fixedly connected with guide block, the arc extinguishing shell inner wall is equipped with sliding slot, the guide block and the sliding slot sliding fit.

[0012] According to the utility model provide a kind of quick breaker, the arc extinguishing shell is equipped with jack, and the conducting sheet is installed in the jack.

[0013] According to the utility model provide a kind of quick breaker, the partition plate upper half is plate structure, and the partition plate lower half is arc structure.

[0014] According to the utility model provide a kind of quick breaker, the conducting sheet includes two ears, two The ear is fixedly connected by three connecting pieces, and impact breakpoint is arranged between adjacent two The connecting piece.

[0015] According to the utility model provide a kind of quick breaker, two The impact breakpoint is respectively corresponding with the arc extinguishing chamber located at two ends.

[0016] A battery module includes the quick breaker.

[0017] An electric vehicle includes the battery module.

[0018] Compared with prior art, the utility model has the advantages and technical effects that: the application provides a kind of quick breaker, battery module and electric vehicle, when using, the metal contact of shell top end is detonated to conduct current, the explosive in containing groove is detonated, and the explosive explosion generates strong thrust, and the fire plug is moved downwards in top cover, arc extinguishing shell, and the conducting sheet is impacted by impact piece during moving, so that the conducting sheet is divided into three sections and enters corresponding arc extinguishing chamber, and the arc extinguishing medium is used to carry out arc extinguishing treatment, to realize the power-off of battery module. In the application, three chambers are arranged to divide the conducting sheet into three sections, the conducting sheet in middle portion falls into the chamber with arc extinguishing medium, and the adjacent conducting sheet is cut off and separated, the length of electric arc is lengthened, and the arc extinguishing effect is further guaranteed. The application has simple structure, low cost, high safety, and can realize quick power-off. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a schematic diagram of the fire plug structure of the present application.

[0022] Figure 3 It is a schematic diagram of the arc extinguishing shell structure of the present application.

[0023] Figure 4 It is a schematic diagram of the top cover structure of the present application.

[0024] Figure 5 It is a schematic diagram of the conductive sheet structure of the present application.

[0025] Figure 6 It is a schematic diagram of the base structure of the present application.

[0026] Among them, 1, base; 2, arc extinguishing shell; 3, top cover; 4, fire plug; 5, conductive sheet; 6, accommodating groove; 7, partition plate; 8, arc extinguishing chamber; 9, cutter head; 10, guide block; 11, jack; 12, connecting sheet; 13, impact breakpoint. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] Referring to Figures 1 to 6 The present application provides a kind of quick power cut-out, comprising:

[0029] Base 1, top end is equipped with arc extinguishing shell 2, and arc extinguishing shell 2 top end is provided with top cover 3, and base 1, arc extinguishing shell 2 and top cover 3 are communicated;

[0030] Impact assembly, including fire plug 4 and impact piece, fire plug 4 is slidably connected in top cover 3, and impact piece is arranged at one end of fire plug 4 in top cover 3, and arc extinguishing shell 2 is provided with conductive sheet 5, and the other end of fire plug 4 is provided with accommodating groove 6, and explosive is placed in accommodating groove 6;

[0031] Two partition plates 7 are fixedly connected in the base 1, and divide the base 1 into three arc-extinguishing chambers 8, wherein when the explosive in the explosive accommodating groove 6 is detonated, the push plug 4 is pushed to drive the impact piece to cut off the conductive sheet 5, and the cut-off part of the conductive sheet 5 extends into the arc-extinguishing chamber 8.

[0032] In an embodiment of the utility model, in use, the metal contact at the top end of the detonation shell conducts current, the explosive in the explosive accommodating groove 6 explodes to generate a strong pushing force, the push plug 4 is pushed to move downwards in the top cover 3 and the arc-extinguishing shell 2, and in the moving process, the impact piece impacts the conductive sheet 5 to divide the conductive sheet 5 into three sections which respectively enter into the corresponding arc-extinguishing chambers 8, and the arc-extinguishing medium is used for arc-extinguishing treatment, thereby realizing power-off of the battery module.

[0033] As an optional embodiment, the impact piece comprises three knife heads 9, the three knife heads 9 are fixedly connected to one end of the push plug 4, the three knife heads 9 correspond to the three arc-extinguishing chambers 8 one by one, and the knife head 9 located in the middle has the same size as the arc-extinguishing chamber 8 located in the middle.

[0034] In an embodiment of the utility model, the three knife heads 9 are fixedly connected to the push plug 4, the three knife heads 9 correspond to the three arc-extinguishing chambers 8 one by one, and simultaneously, the three conductive sheets 5 are cut off, when cutting off, the middle conductive sheet 5 falls into the arc-extinguishing chamber 8 with the arc-extinguishing medium in the middle, and the two adjacent conductive sheets 5 are cut off and separated, the length of the electric arc is lengthened, and simultaneously, the middle knife head 9 is tightly matched with the middle arc-extinguishing chamber 8, thereby further playing an effective arc-extinguishing role.

[0035] As an optional embodiment, the push plug 4 is fixedly connected with a guide block 10 on the outer side wall, a sliding groove is formed on the inner side wall of the arc-extinguishing shell 2, and the guide block 10 is in sliding fit with the sliding groove.

[0036] In an embodiment of the utility model, the guide block 10 and the sliding groove are in sliding fit, thereby ensuring stable sliding of the push plug 4.

[0037] As an optional embodiment, a plug hole 11 is formed in the arc-extinguishing shell 2, and the conductive sheet 5 is installed in the plug hole 11.

[0038] In an embodiment of the utility model, the conductive sheet 5 is installed in the arc-extinguishing shell 2 through the plug hole 11.

[0039] As an optional embodiment, the upper half of the partition plate 7 is in a plate type structure, and the lower half of the partition plate 7 is in an arc-shaped structure.

[0040] In an embodiment of the utility model, the partition plate 7 is spliced in a plate type and an arc-shaped structure.

[0041] As an optional implementation, the conductive sheet 5 comprises two ears fixedly connected through three connecting pieces 12, and impact breaking points 13 are arranged between the adjacent two connecting pieces 12.

[0042] In an embodiment of the utility model, when the cutter head 9 impacts the conductive sheet 5, the connecting pieces 12 are separated by contacting the impact connecting pieces 12 and cooperating with the arranged separating plate 7, and the arranged impact breaking points 13 ensure the separation effect.

[0043] As an optional implementation, the two impact breaking points 13 correspond to the two arc-extinguishing compartments 8 at the two ends one by one.

[0044] In an embodiment of the utility model, the separated connecting pieces 12 fall into the arc-extinguishing compartments 8 and are subjected to arc-extinguishing treatment by the arc-extinguishing medium.

[0045] Specifically, the plug 4 is provided with an arc-shaped elongated guide rod, a guide groove formed by the elongated guide rod, and arc-shaped cutter heads 9 on both sides, so that the conductive sheet 4 can be cut off more quickly and accurately.

[0046] A battery module comprises a quick power breaker.

[0047] An electric vehicle comprises the battery module.

[0048] The working process of the utility model is as follows:

[0049] When the battery module needs to be powered off due to working abnormity during the operation of the electric vehicle, the metal contact at the top end of the detonation shell conducts current, detonates the explosive in the accommodating groove 6, and the explosive explosion generates a strong thrust to push the plug 4 to move downward in the top cover 3 and the arc-extinguishing shell 2, the cutter head 9 impacts on the connecting piece 12 in the moving process, the connecting piece 12 enters the arc-extinguishing compartment 8, the battery module is powered off, and the cut-off connecting piece 12 falls into the base arc-extinguishing compartment 8 and is subjected to arc-extinguishing treatment by the arc-extinguishing medium.

[0050] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0051] The above-described embodiments are only to describe the preferred modes of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art shall fall within the protection scope of the present application.

Claims

1. A fast breaker, characterized in that, The utility model relates to a quick breaker, including: A base (1) is provided with an arc extinguishing shell (2) at the top end, and a top cover (3) is arranged at the top end of the arc extinguishing shell (2), and the base (1), the arc extinguishing shell (2) and the top cover (3) are communicated; An impact assembly is arranged, which comprises a fire plug (4) and an impact piece, the fire plug (4) is slidably connected in the top cover (3), the impact piece is arranged at one end of the fire plug (4) in the top cover (3), an electrically conductive sheet (5) is arranged in the arc extinguishing shell (2), and a containing groove (6) is formed in the other end of the fire plug (4), and an explosive is arranged in the containing groove (6); Two partition plates (7) are fixedly connected in the base (1) and divide the base (1) into three arc extinguishing chambers (8), when the explosive in the containing groove (6) is detonated, the fire plug (4) is pushed to drive the impact piece to cut off the electrically conductive sheet (5), and the cut-off part of the electrically conductively sheet (5) extends into the arc extinguishing chamber (8).

2. A quick disconnect according to claim 1, wherein, The impact piece comprises three knife heads (9), the three knife heads (9) are fixedly connected at one end of the fire plug (4), the three knife heads (9) correspond to the three arc extinguishing chambers (8) one by one, and the knife head (9) located in the middle has the same size as the arc extinguishing chamber (8) located in the middle.

3. A quick disconnect according to claim 1, wherein, A guide block (10) is fixedly connected to the outer wall of the fire plug (4), a sliding groove is formed in the inner wall of the arc extinguishing shell (2), and the guide block (10) and the sliding groove are in sliding fit.

4. A fast breaker according to claim 1, characterized in that A plug hole (11) is formed in the arc extinguishing shell (2), and the electrically conductive sheet (5) is arranged in the plug hole (11).

5. A fast breaker according to claim 1, characterized in that: The upper half of the partition plate (7) is a plate structure, and the lower half of the partition plate (7) is an arc structure.

6. A fast breaker according to claim 1, characterized in that The electrically conductive sheet (5) comprises two supporting ears, and the two supporting ears are fixedly connected through three connecting sheets (12), and impact breaking points (13) are arranged between adjacent two connecting sheets (12).

7. A fast breaker according to claim 6, characterized in that: The two impact breaking points (13) correspond to the arc extinguishing chambers (8) at two ends one by one.

8. A battery module comprising the quick breaker of any one of claims 1-7.

9. An electric vehicle comprising the battery module of claim 8.

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