Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and electric equipment, the battery pack comprises a box body, an anti-explosion valve, a protective cover and a connecting piece, the protective cover comprises a cover body and a flange, the flange is provided with an avoiding groove, a protruding part is formed on one side, deviating from the box body, of the flange, a first notch of the avoiding groove directly faces the protruding part, and a second notch of the avoiding groove faces the connecting piece. The groove cavity of the avoiding groove extends into the protruding part, the avoiding groove can reduce the supporting performance of the protruding part, the protruding part is prone to elastic deformation when stressed, therefore, the connector of the connecting piece abuts against the protruding part, the protruding part deforms towards the side where the box body is located when stressed by the connector, the pressure is transmitted to the flanging, and therefore the flanging can abut against the box body. And the connector bears a counter force from the convex part, so that the connection between the connecting piece and the box body is firmer, on the basis, the protective cover can be stably mounted on the box body, the protective cover is not easy to loosen, when the explosion-proof valve is started, the protective cover can correctly guide the flow direction of gas, and the safety of the battery pack is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery pack and electrical equipment. BACKGROUND

[0002] The outer wall surface of the battery pack is provided with an explosion-proof valve, when the internal pressure of the battery pack reaches a certain degree, the explosion-proof valve will start, and the internal pressure of the battery pack is balanced by releasing the eruption material, so as to ensure the safety of the battery pack, in the related art, the outer wall surface of the battery pack is also provided with a protective cover, the protective cover has an exhaust port, the explosion-proof valve is arranged in the protective cover, and the protective cover plays a role in protecting the explosion-proof valve and guiding the gas, therefore, if the protective cover is not stably installed, the flow direction of the gas cannot be correctly guided, and the safety of the battery pack is reduced. SUMMARY

[0003] The utility model discloses a primary purpose is: propose a kind of battery pack, its protective cover can be stably installed, and the safety of the battery pack is relatively high.

[0004] In order to achieve the above purpose, the utility model provides a kind of battery pack, with the first direction and the second direction of intersection, including box, explosion-proof valve, protective cover and connecting piece;

[0005] The box is connected with the explosion-proof valve and the protective cover, and the explosion-proof valve, the protective cover are located outside the box;

[0006] The protective cover includes cover body and flanging;

[0007] The cover body has exhaust port, and the cover body and the box form accommodating cavity, and the exhaust port is communicated with the accommodating cavity, in the first direction, the opposite ends of the cover body are connected with a flanging respectively;

[0008] The flanging has avoiding slot and connecting hole, and the side of the flanging away from the box forms protruding portion, the avoiding slot has first slot and slot cavity that are communicated with each other, in the second direction, the first slot is located on the side of the flanging towards the box, and the first slot is opposite to the protruding portion;The slot cavity is arranged in the protruding portion, the connecting hole penetrates the protruding portion along the second direction, and the connecting hole is communicated with the slot cavity;

[0009] The connecting piece includes connecting head and connecting rod that are connected with each other, the connecting head is abutted to the side of the protruding portion away from the box, the connecting rod is arranged in the connecting hole, the slot cavity and the first slot, and is connected with the box, so that the side of the flanging towards the box is abutted to the box;

[0010] At least part of the explosion-proof valve is arranged in the accommodating cavity.

[0011] In a specific embodiment of the utility model, the one side of the convex part away from the cover body is flush with the one side of the flange away from the cover body, and the one side of the convex part away from the cover body is connected with the one side of the flange away from the cover body to form a first plane.

[0012] The avoiding groove has a second slot, along the first direction, the second slot penetrates the first plane, and the second slot is communicated with the first slot and the groove cavity.

[0013] In a specific embodiment of the utility model, the box body includes a box main body and a mounting seat.

[0014] The box main body has a weight reduction groove, and the weight reduction groove is located on the outer wall surface of the box main body.

[0015] The mounting seat is connected to the groove bottom surface of the weight reduction groove.

[0016] The explosion-proof valve is connected with the mounting seat.

[0017] The connecting rod is connected with the box main body.

[0018] In a specific embodiment of the utility model, the box body further includes reinforcing ribs, the number of the reinforcing ribs is multiple, multiple reinforcing ribs are intersected and arranged in the weight reduction groove, and at least part of the reinforcing ribs are connected with the peripheral wall surface of the mounting seat.

[0019] In a specific embodiment of the utility model, the box body further includes a mounting column, the mounting column is vertically arranged on the groove bottom surface of the weight reduction groove, the mounting column has a mounting hole, and the mounting hole is located on the one side of the mounting column away from the groove bottom surface of the weight reduction groove.

[0020] The connecting rod is connected with the hole wall surface of the mounting hole.

[0021] In a specific embodiment of the utility model, the peripheral wall surface of the mounting column is connected with at least one reinforcing rib.

[0022] In a specific embodiment of the utility model, the one side of the flange facing the inside of the box main body is abutted on the outer wall surface of the box main body.

[0023] In a specific embodiment of the utility model, the flange is located in the weight reduction groove, and the one side of the flange facing the inside of the box main body is abutted on part of the reinforcing ribs.

[0024] Part of the cover body is embedded in the weight reduction groove.

[0025] In a specific embodiment of the utility model, the box body has an exhaust passage, the exhaust passage penetrates the box main body and the mounting seat, and the explosion-proof valve seals the exhaust passage.

[0026] The utility model discloses still propose a kind of electric equipment, including the battery pack as above.

[0027] The utility model discloses a kind of battery pack and electric equipment, compared with prior art, its beneficial effect is in that:

[0028] The battery pack of the utility model, since the first slot of the avoidance groove is directly opposite the protruding part, and the cavity of the avoidance groove is located in the protruding part, therefore, the avoidance groove will reduce the supporting performance of the protruding part, the protruding part is easily elastically deformed under stress, whereby, the connecting head of the connecting piece abuts against the protruding part, the protruding part is deformed towards the side where the box is under the pressure of the connecting head, and the pressure is transmitted to the turn-up, so that the turn-up will abut against the box, and the connecting head will be subjected to the reaction force from the protruding part, so that the connection of the connecting piece and the box is more fastened, based on this, the protective cover can be stably installed on the box, the protective cover is not prone to loosening, when the explosion-proof valve is started, the protective cover can correctly guide the flow direction of gas, and the safety of the battery pack is relatively high. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the perspective view of the battery pack of the utility model embodiment;

[0030] Figure 2 It is the structure diagram that the box, explosion-proof valve and protective cover of the utility model embodiment cooperate;

[0031] Figure 3 It is the enlarged scale schematic diagram of A in the utility model embodiment Figure 2

[0032] Figure 4 It is the explosion diagram that the box, explosion-proof valve and protective cover of the utility model embodiment cooperate;

[0033] Figure 5 It is another structure diagram that the box, explosion-proof valve and protective cover of the utility model embodiment cooperate;

[0034] Figure 6 It is the perspective view of the protective cover of the utility model embodiment.

[0035] ​In the figure, 1, box body; 11, box main body; 1101, exhaust passage; 12, mounting seat; 13, reinforcing rib; 14, mounting column; 1401, mounting hole; 2, explosion-proof valve; 3, protective cover; 31, cover body; 3101, exhaust port; 32, flange; 3201, avoiding groove; 32011, first notch; 32012, groove cavity; 32013, second notch; 3202, connecting hole; 321, protruding part; 4, connecting piece; 41, connecting head; 42, connecting rod; 100, containing cavity; 200, first plane; 300, lightening groove. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0038] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless specifically stated and limited otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0040] In the embodiments of the application, "parallel" refers to a state in which the angle formed by a straight line and a straight line, a straight line and a surface, or a surface and a surface is -1°-1°. In addition, "perpendicular" refers to a state in which the angle formed by a straight line and a straight line, a straight line and a surface, or a surface and a surface is 89°-91°. Equal distance, equal angle or equal area refers to a state in which the tolerance range is -1%-1%.

[0041] The present application provides a kind of electric equipment, it includes the battery pack as follows, wherein, battery pack is used to store and output electric energy, provides power supply for electric equipment, electric equipment includes but is not limited to electric vehicle, unmanned aerial vehicle, mobile power etc.;Since electric equipment uses the battery pack as follows, whereby, electric equipment also has the advantages of the battery pack described below, the present application does not make too much repetition.

[0042] As Figures 1 to 5As shown, the utility model discloses a battery pack of preferred embodiment, the battery pack has the first direction X and the second direction Y of mutual perpendicular, wherein, the battery pack includes box 1, explosion -proof valve 2, protective cover 3 and connecting piece 4, box 1 is connected with explosion -proof valve 2 and protective cover 3, and explosion -proof valve 2, protective cover 3 are all located in the box 1 outside, protective cover 3 includes cover 31 and flanging 32, cover 31 has exhaust port 3101, and cover 31 and box 1 form the accommodation cavity 100 between, and exhaust port 3101 is communicated with the accommodation cavity 100, in the first direction X, the opposite ends of cover 31 are connected with a flanging 32 respectively, flanging 32 has the avoidance groove 3201 and the connecting hole 3202, and the one side of flanging 32 away from box 1 forms the protruding portion 321, the avoidance groove 3201 has the first slot 32011 and the groove cavity 32012 of intercommunication, in the second direction Y, the first slot 32011 is located on the one side of flanging 32 towards box 1, and the first slot 32011 is opposite with protruding portion 321, the groove cavity 32012 is located in protruding portion 321, the connecting hole 3202 is along the second direction Y and penetrates protruding portion 321, and the connecting hole 3202 is communicated with the groove cavity 32012, connecting piece 4 includes the connecting head 41 and the connecting rod 42 of interconnection, the connecting head 41 abuts the one side of protruding portion 321 away from box 1, and the connecting rod 42 is arranged in connecting hole 3202, groove cavity 32012 and first slot 32011, and is connected with box 1, to make the one side of flanging 32 towards box 1 abut box 1, at least part of explosion -proof valve 2 is located in the accommodation cavity 100.

[0043] Specifically, since the first slot 32011 of avoidance groove 3201 is opposite with protruding portion 321, and the groove cavity 32012 of avoidance groove 3201 is located in protruding portion 321, therefore, the support performance of protruding portion 321 will be reduced by avoidance groove 3201, and the protruding portion 321 is easily elastically deformed under stress, thereby, the connecting head 41 of connecting piece 4 abuts protruding portion 321, and the protruding portion 321 is deformed towards the side where box 1 is located under the pressure of connecting head 41, and the pressure is transmitted to flanging 32, so that flanging 32 abuts box 1, and the connecting head 41 is subjected to the reaction force from protruding portion 321, so that the connection of connecting piece 4 and box 1 is more firm, based on this, protective cover 3 can be stably installed on box 1, and protective cover 3 is not easy to loosen, when explosion -proof valve 2 is started, protective cover 3 can correctly guide the flow direction of gas, and the safety of battery pack is relatively high.

[0044] The exhaust port 3101 of the cover body 31 is used for discharging the gas sprayed out when the explosion-proof valve 2 is started. In actual application, when the explosion-proof valve 2 sprays, the gas is output to the accommodating cavity 100 through the explosion-proof valve 2 and is discharged through the exhaust port 3101. When the battery pack is used in an electric vehicle, the exhaust port 3101 is directed to the bottom of the battery pack, that is, the exhaust port 3101 is directed to the bottom of the vehicle of the electric vehicle. Thus, when the explosion-proof valve 2 sprays, it will not directly spray to the passenger compartment, thereby improving safety and reducing harm to the passenger compartment.

[0045] For example, the connecting piece 4 is a screw, at this time, the connecting head 41 is the head of the screw, the connecting rod 42 is the shank of the screw, and the shank is provided with a thread. The connecting piece 4 is connected with the box body 1 through the thread.

[0046] Further, as shown in Figure 3 and Figure 5 , the side of the protruding part 321 away from the cover body 31 is flush with the side of the flange 32 away from the cover body 31, and the side of the protruding part 321 away from the cover body 31 is connected with the side of the flange 32 away from the cover body 31 to form a first plane 200. The avoiding groove 3201 has a second slot 32013. Along the first direction X, the second slot 32013 penetrates the first plane 200, and the second slot 32013 is in communication with the first slot 32011 and the groove cavity 32012. Specifically, the provision of the second slot 32013 can further reduce the supporting performance of the protruding part 321. Thus, when the connecting head 41 of the connecting piece 4 abuts against the protruding part 321, the protruding part 321 is more likely to deform. Thus, the counterforce of the protruding part 321 acting on the connecting head 41 is greater, thereby making the connection between the connecting piece 4 and the box body 1 more firm, and enabling the protective cover 3 to be more stably installed on the box body 1.

[0047] Further, as shown in Figure 2 and Figure 4 , the box body 1 comprises a box main body 11 and a mounting seat 12. The box main body 11 is provided with a weight-reducing groove 300 on the outer wall surface thereof. The mounting seat 12 is connected to the groove bottom surface of the weight-reducing groove 300. The explosion-proof valve 2 is connected with the mounting seat 12. The connecting rod 42 is connected with the box main body 11. The provision of the weight-reducing groove 300 on the box main body 11 can make the battery pack lighter, which is beneficial to the lightweight of the battery pack. The provision of the mounting seat 12 can enable the explosion-proof valve 2 to be mounted on the groove bottom surface of the weight-reducing groove 300 without the need for the operator to stretch into the weight-reducing groove 300 during assembly, thereby facilitating assembly.

[0048] In addition, the weight-reducing groove 300 is in communication with the accommodating cavity 100. Thus, the weight-reducing groove 300 can be used as an extension part of the exhaust buffering space to avoid the gas sprayed out suddenly from stirring in a narrow space and to reduce the impact force of the gas on the cover body 31.

[0049] Further, as shown in Figure 2 and Figure 4 , the box body 1 further comprises reinforcing ribs 13, the reinforcing ribs 13 are multiple in number and intersected in the lightening groove 300, at least part of the reinforcing ribs 13 are connected with the peripheral wall surface of the mounting seat 12, specifically, although the lightening groove 300 is arranged to reduce the weight of the box body 1, it will reduce the strength of the box body 1 at this place to some extent, and the arrangement of the reinforcing ribs 13 can make up for the missing strength at this part, so that the box body 1 is relatively light in weight and has sufficient strength.

[0050] In the embodiment, as shown in Figure 2 and Figure 4 , the box body 1 further comprises a mounting column 14, the mounting column 14 is vertically arranged on the groove bottom surface of the lightening groove 300, the mounting column 14 has a mounting hole 1401, the mounting hole 1401 is located on the side of the mounting column 14 away from the groove bottom surface of the lightening groove 300; the connecting rod 42 is connected with the hole wall surface of the mounting hole 1401, specifically, the hole wall surface of the mounting hole 1401 is provided with threads, and the connecting rod 42 is screwed with the mounting hole 1401, so that the connecting rod 42 is connected with the connecting piece 4 through the mounting column 14, and does not need to be connected into the box body 11, which is convenient for assembly.

[0051] Further, as shown in Figure 4 , the peripheral wall surface of the mounting column 14 is connected with at least one reinforcing rib 13, at this time, the mounting column 14 also serves as a reinforcing part for reinforcing the strength of the box body 1, increases the size of the reinforcing structure, and can make the box body 1 have sufficient strength.

[0052] In the embodiment, as shown in Figure 2 and Figure 3 , the side of the flange 32 facing the inside of the box body 11 abuts against the outer wall surface of the box body 11, at this time, the flange 32 is located outside the lightening groove 300, and the space formed between the accommodating cavity 100 and the lightening groove 300 is relatively large, which is beneficial to reducing the impact force of the gas sprayed out of the explosion-proof valve 2 on the cover body 31.

[0053] In other embodiments, as shown in Figure 6 , the flange 32 is located in the lightening groove 300, and the side of the flange 32 facing the inside of the box body 11 abuts against part of the reinforcing rib 13; part of the cover body 31 is embedded in the lightening groove 300, at this time, part of the protective cover 3 is located in the lightening groove 300, and the size of the battery pack is relatively small in the direction from the box body 1 to the protective cover 3, and the battery pack has the characteristics of compact structure.

[0054] In the embodiment, as shown in Figure 2 and Figure 4As shown, the box body 1 has an exhaust passage 1101 which penetrates the box body 11 and the mounting seat 12, and the explosion-proof valve 2 seals the exhaust passage 1101, and specifically, the battery pack further comprises a battery which is arranged in the box body 11, and a gas collection cavity for collecting gas generated by thermal runaway of the battery is further arranged in the box body 11, and the exhaust passage 1101 is communicated with the gas collection cavity, so that the gas generated by the thermal runaway of the battery is discharged through the gas collection cavity, the exhaust passage 1101 and the explosion-proof valve 2, which is the prior art, and the present application will not be described in detail.

[0055] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A battery pack having a first direction (X) and a second direction (Y) intersecting, characterized by, The box (1) is connected with the explosion-proof valve (2) and the protective cover (3), and the explosion-proof valve (2) and the protective cover (3) are located outside the box (1); The protective cover (3) comprises a cover body (31) and a flange (32); The cover body (31) has an exhaust port (3101), and a containing cavity (100) is formed between the cover body (31) and the box (1), the exhaust port (3101) communicates with the containing cavity (100), and in the first direction (X), the cover body (31) is connected with one flange (32) at each end thereof; The flange (32) has an avoiding groove (3201) and a connecting hole (3202), one side of the flange (32) away from the box (1) is formed with a protruding portion (321), the avoiding groove (3201) has a first slot (32011) and a groove cavity (32012) communicating with each other, in the second direction (Y), the first slot (32011) is located on the side of the flange (32) facing the box (1), and the first slot (32011) is opposite to the protruding portion (321); the groove cavity (32012) is arranged in the protruding portion (321), the connecting hole (3202) penetrates the protruding portion (321) along the second direction (Y), and the connecting hole (3202) communicates with the groove cavity (32012); The connecting piece (4) comprises a connecting head (41) and a connecting rod (42) connected with each other, the connecting head (41) abuts against the side of the protruding portion (321) away from the box (1), the connecting rod (42) is arranged in the connecting hole (3202), the groove cavity (32012) and the first slot (32011), and is connected with the box (1), so that the side of the flange (32) facing the box (1) abuts against the box (1); At least part of the explosion-proof valve (2) is arranged in the containing cavity (100). The side of the protruding portion (321) away from the cover body (31) is flush with the side of the flange (32) away from the cover body (31), and the side of the protruding portion (321) away from the cover body (31) is connected with the side of the flange (32) away from the cover body (31) to form a first plane (200); 2. The battery pack of claim 1, wherein, The avoiding groove (3201) has a second slot (32013), and in the first direction (X), the second slot (32013) penetrates the first plane (200), and the second slot (32013) communicates with the first slot (32011) and the groove cavity (32012). The box (1) comprises a box body (11) and a mounting seat (12); 3. The battery pack of claim 1, wherein, The box body (11) has a weight-reducing groove (300) on the outer wall surface of the box body (11); The mounting seat (12) is connected to the groove bottom surface of the weight-reducing groove (300); ​ The explosion-proof valve (2) is connected with the mounting seat (12); The connecting rod (42) is connected with the box body (11).

4. The battery pack of claim 3, wherein, The box body (1) further comprises reinforcing ribs (13), the number of the reinforcing ribs (13) is multiple, the multiple reinforcing ribs (13) are intersected and arranged in the lightening groove (300), and at least part of the reinforcing ribs (13) are connected with the peripheral wall surface of the mounting seat (12).

5. The battery pack of claim 4, wherein, The box body (1) further comprises a mounting column (14), the mounting column (14) is vertically arranged on the groove bottom surface of the lightening groove (300), the mounting column (14) has a mounting hole (1401), and the mounting hole (1401) is located on the side of the mounting column (14) away from the groove bottom surface of the lightening groove (300). The connecting rod (42) is connected with the hole wall surface of the mounting hole (1401).

6. The battery pack of claim 5, wherein, The peripheral wall surface of the mounting column (14) is connected with at least one reinforcing rib (13).

7. The battery pack of claim 5, wherein, The side of the flange (32) facing the inside of the box body (11) is abutted on the outer wall surface of the box body (11).

8. The battery pack of claim 5, wherein, The flange (32) is located in the lightening groove (300), and the side of the flange (32) facing the inside of the box body (11) is abutted on part of the reinforcing ribs (13). Part of the cover body (31) is embedded in the lightening groove (300).

9. The battery pack of claim 3, wherein, The box body (1) has an exhaust passage (1101), the exhaust passage (1101) penetrates the box body (11) and the mounting seat (12), and the explosion-proof valve (2) seals the exhaust passage (1101).

10. An electric device, characterized by The battery pack comprises the battery pack as claimed in any one of claims 1-9. The battery pack comprises the battery pack as claimed in any one of claims 1-9.

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