Protective cover and battery pack

Abstract

The utility model discloses a protective cover and a battery pack. The protective cover is used for being installed on a battery pack interface. The protective cover comprises a protective cover body and a limiting claw. A clamping groove is formed in the protection cover body, and a containing space is formed in the lower end face of the protection cover body. The limiting claw is arranged at the side part of the protective cover main body and is rotationally connected with the protective cover main body; the limiting claw comprises a downward extending section and a horizontal supporting section which is bent from the end part of the downward extending section; and the horizontal supporting section can be clamped into the clamping groove of the other protective cover main body. According to the protective cover, a plurality of battery packs can be transported or moved at the same time, and the taking and placing efficiency of the battery packs is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of electric tools, and specifically relates to a protective cover and a battery pack. Background Art

[0002] Lithium battery packs are widely used in the field of power tools due to their high energy density, light weight, long cycle life, and fast charge and discharge speed. The use of lithium battery packs makes power tools lighter and more portable, so that power tools have more application scenarios. In order to increase the battery life of power tools, lithium battery packs are usually detachably connected to power tools to facilitate replacement of battery packs. Existing lithium battery packs are not easy to improve the efficiency of picking up and placing during transportation or movement.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The purpose of the present application is to provide a protective cover that can realize the simultaneous transportation or movement of multiple battery packs, thereby improving the efficiency of taking and placing the battery packs.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the present application provides a protective cover for installation on a battery pack interface. The protective cover includes: a protective cover body and a limiting claw. The protective cover body is formed with a card slot and a accommodating space is provided on the lower end surface of the protective cover body; the limiting claw is provided on the side of the protective cover body and is rotatably connected to the protective cover body; the limiting claw includes a downward extending section and a horizontal supporting section bent from the end of the downward extending section; the horizontal supporting section can be inserted into the card slot of another protective cover body.

[0006] In one or more embodiments of the present application, a connecting shaft is provided on the side of the protective cover body, a supporting portion is provided on the side of the downward extending section facing the protective cover body, and the limiting claw is sleeved on the connecting shaft through the supporting portion and can rotate around the connecting shaft.

[0007] In one or more embodiments of the present application, a reset member is sleeved on the connecting shaft, one end of the reset member is abutted against the side wall of the protective cover body, and the other end is abutted against the downward extending section; the reset member has a tendency to make the limiting claw always approach the protective cover body.

[0008] In one or more embodiments of the present application, a side wall of the protective cover body and a side of the downward extending section facing the protective cover body are both provided with a mounting portion, and an end of the reset member cooperates with the mounting portion.

[0009] In one or more embodiments of the present application, the reset member is a torsion spring, and one end of the connecting shaft is provided with a plurality of limiting portions along the circumferential ring of the connecting shaft. The limiting portions are abutted against one end of the supporting portion to limit the axial movement of the limiting claw along the connecting shaft.

[0010] In one or more embodiments of the present application, the downward extending section includes a main body, an adjustment section connected to the main body, and the horizontal supporting section bent from the end of the adjustment section, and the adjustment section can slide relative to the main body along the height direction of the main body.

[0011] In one or more embodiments of the present application, a first fixing portion is provided on one of the adjustment section or the main body, and a plurality of second fixing portions are provided on the other of the main body or the adjustment section along its height direction; a fixing member is provided between the adjustment section and the main body, and the fixing member is installed in the first fixing portion and one of the second fixing portions to selectively fix the position of the adjustment section relative to the main body.

[0012] In one or more embodiments of the present application, the fixing member includes: an elastic member and a fixing pin. The elastic member is arranged in the first fixing portion; the fixing pin has a guide surface and is abutted against the other end of the elastic member, and the fixing pin can slide in the first fixing portion and the second fixing portion.

[0013] In one or more embodiments of the present application, a positioning block is provided on the outer peripheral surface of the fixing pin; when the fixing pin is inserted in the second fixing part, the positioning block abuts against the surface of the main body; and the first fixing part is axially provided with a clearance groove for inserting the positioning block.

[0014] Compared with the prior art, the protective cover of the present application has an accommodating space on the lower end surface of the protective cover body. The accommodating space wraps the battery pack interface, thereby isolating the metal electrodes at the battery pack interface from the external environment, which can avoid dust contamination and improve safety. The provision of multiple protective cover bodies can realize the simultaneous placement of multiple battery packs, improving the efficiency of placing and taking the battery packs. In addition, the length of the limiting claw can be adjusted, and the protective cover can adapt to more battery packs of different specifications, making it more versatile.

[0015] On the other hand, the present application provides a battery pack, comprising two or more battery packs and the above-mentioned protective cover; in two adjacent protective cover bodies, the horizontal support section of the limiting claw of the protective cover body arranged at the upper side can be inserted into the card slot of the protective cover body arranged at the lower side; a protective space is formed between the two adjacent protective cover bodies, and the battery pack is accommodated in the protective space; the battery pack is provided with a guide groove, one end of the accommodating space has an opening, and the inner wall of the protective cover body is provided with a guide rail matching the guide groove along the length direction of the accommodating space, and the battery pack interface can move along the guide rail from the opening and be clamped in the accommodating space.

[0016] Compared with the prior art, the battery pack of the present application uses a protective cover having multiple protective cover bodies, and a protective space is formed between adjacent protective cover bodies, so that the battery pack can simultaneously protect multiple battery packs and realize the one-time access to multiple battery packs. In addition, a guide rail is also provided in the accommodating space to further ensure the stable connection between the battery pack and the protective cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a first schematic diagram of a protective cover clamping a battery pack in one embodiment of the present application;

[0019] Figure 2 This is a second schematic diagram of a battery pack clamped by a protective cover in one embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of a protective cover body in one embodiment of the present application;

[0021] Figure 4 A cross-sectional view of a protective cover clamping a battery pack in one embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of an adjustment section and a fixing member in an embodiment of the present application;

[0023] Figure 6 It is a three-dimensional diagram of a downwardly extending section in one embodiment of the present application;

[0024] Figure 7 for Figure 6 A side view of the downwardly extending section;

[0025] Figure 8 is a three-dimensional diagram of a limiting claw in an embodiment of the present application;

[0026] Fig. 9 This is a schematic diagram of a protective cover in an open state with a limiting claw in one embodiment of the present application;

[0027] Fig.10 A schematic diagram of a battery pack according to an embodiment of the present application;

[0028] Fig.11 FIG. 1 is a schematic diagram of a battery pack in an embodiment of the present application.

[0029] Description of main reference numerals:

[0030] 1-protection cover body, 11-accommodating space, 111-guide rail, 12-installation groove, 121-connecting shaft, 1211-limiting part, 13-card slot, 2-limiting claw, 21-downward extension section, 21A-main body, 21B-adjustment section, 211-support part, 212-second fixing part, 213-first fixing part, 2131-yield groove, 22-horizontal support section, 3-reset part, 31-installation part, 4-fixing part, 41-elastic part, 42-fixing pin, 421-positioning block, 5-battery pack, 51-battery pack interface, 52-guide groove. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of this application.

[0032] like Figure 1-11As shown, a protective cover in one embodiment of the present application is used to be installed on a battery pack interface 51. The protective cover includes a protective cover body 1 and a limiting claw 2. The protective cover body 1 is formed with a card slot 13 and a housing space 11 is provided on the lower end surface of the protective cover body 1. The battery pack interface 51 can be wrapped by the housing space 11 and isolated from the external environment. The limiting claw 2 is arranged on the side of the protective cover body 1 and is rotatably connected to the protective cover body 1. The limiting claw 2 can rotate relative to the protective cover body 1, changing the angle between it and the protective cover body 1 so as to facilitate the battery pack 5 to enter and exit the housing space 11 and clamp the battery pack 5. Each limiting claw 2 includes a downward extending section 21 and a horizontal supporting section 22 bent from the end of the downward extending section 21. And in two adjacent protective cover bodies 1, the horizontal supporting section 22 of the limiting claw 2 of the protective cover body 1 arranged on the upper side can be inserted into the card slot 13 of the protective cover body 1 arranged on the lower side, thereby realizing the stacking arrangement of multiple protective cover bodies 1. When there is only one protective cover body 1 and the limiting claw 2 is in contact with the protective cover body 1 , the upper surface of the horizontal supporting section 22 can also abut against the lower surface of the battery pack 5 .

[0033] In the above embodiment, the lower end surface of the protective cover body 1 is provided with an accommodating space 11. The accommodating space 11 wraps the battery pack interface 51, thereby isolating the metal electrode at the battery pack interface 51 from the external environment. The battery pack interface 51 can thus avoid being contaminated by dust, and a short circuit will not occur, thereby improving safety. Secondly, the stacking of multiple protective cover bodies 1 can realize the simultaneous movement or transportation of multiple battery packs 5, thereby improving the efficiency of taking and placing the battery packs 5.

[0034] In one embodiment, if Figure 3 As shown, a mounting groove 12 may be provided on the side of the protective cover body 1. The mounting groove 12 may provide a mounting space for the limiting claw 2 to be mounted to the protective cover body 1. Specifically, a connecting shaft 121 is provided in the mounting groove 12 along the length of the mounting groove 12. Figure 7 As shown, a support portion 211 is provided on one side of the downward extension section 21 facing the mounting groove 12, and the support portion 211 protrudes from the surface of the downward extension section 21. A through hole may be provided on the support portion 211, and the support portion 211 can be sleeved on the connecting shaft 121. The limiting claw 2 is connected to the protective cover body 1 through the support portion 211 and can rotate around the connecting shaft 121.

[0035] Preferably, a limiting claw 2 may be provided on each side of the protective cover body 1. The two limiting claws 2 work together to clamp the battery pack 5 below the protective cover body 1. When the limiting claws 2 rotate in a direction away from the protective cover body 1, the battery pack 5 can enter and exit the accommodating space 11 between the two limiting claws 2. When the limiting claws 2 approach the protective cover body 1 and fit the protective cover body 1, the two limiting claws 2 clamp the battery pack 5 placed in the accommodating space 11, thereby protecting the battery pack 5.

[0036] Furthermore, in order to ensure a stable connection between the limiting claw 2 and the connecting shaft 121, as shown in FIG. Figure 3 As shown, one end of the connecting shaft 121 is provided with a plurality of limiting portions 1211 along the circumference of the connecting shaft 121. In one embodiment, the limiting portion 1211 may be a limiting buckle. The limiting portion 1211 can be elastically deformed, and can be squeezed so that the supporting portion 211 can slide freely on the connecting shaft 121. In the absence of external force, the limiting portion 1211 makes the maximum diameter of the connecting shaft 121 greater than the diameter of the supporting portion 211. At this time, the limiting portion 1211 is abutted against one end of the supporting portion 211, thereby limiting the free movement of the limiting claw 2 along the axial direction of the connecting shaft 121, thereby ensuring the stable connection between the limiting claw 2 and the connecting shaft 121.

[0037] In order to make the limiting claw 2 clamp the battery pack 5 more firmly and stably, Figure 4 and Figure 5 As shown, a reset member 3 is sleeved on the connecting shaft 121. The reset member 3 has a torsional force that makes the limiting claw 2 always approach the protective cover body 1. Specifically, one end of the reset member 3 is fixed to the groove wall of the mounting groove 12, and the other end is fixed to the side of the downward extension section 21 facing the mounting groove 12. The reset member 3 has a tendency to make the limiting claw 2 always approach the protective cover body 1. Preferably, the reset member 3 can be a torsion spring. Due to the action of the reset member 3, the limiting claw 2 will always fit with the protective cover body 1 in the absence of other forces, thereby tightly clamping the battery pack 5 to prevent the battery pack protective cover body 1 from falling off.

[0038] like Figure 2 and Figure 8 As shown, the groove wall of the mounting groove 12 and the side of the downward extension section 21 facing the mounting groove 12 are both provided with mounting portions 31 corresponding to the shapes of the two ends of the reset member 3. The ends of the reset member 3 are respectively clamped in one of the mounting portions 31, so that the reset member 3 will not move on the connecting shaft 121. Specifically, the shape of the mounting portion 31 is substantially the same as the structure of the two ends of the reset member 3, so that the two ends of the reset member 3 can be clamped along the mounting portion 31, thereby preventing the reset member 3 from being offset and affecting the reset of the limit claw 2 and the clamping of the battery pack 5.

[0039] Since the sizes of different battery packs 5 are inconsistent, especially the thickness of the battery packs 5 may vary greatly due to the different battery capacities. In order to adapt to battery packs 5 of different sizes, the limiting claw 2 may also be provided with an adjustment section 21B to adjust the length of the limiting claw 2. To this end, the downward extension section 21 of the limiting claw 2 also includes a main body 21A, an adjustment section 21B connected to the main body 21A, and a horizontal support section 22 is bent from the end of the adjustment section 21B, and the adjustment section 21B can be adjusted in height relative to the main body 21A.

[0040] Specifically, Figure 5 and Figure 6 As shown, the adjustment section 21B is provided with a first fixing portion 213, and the main body 21A is provided with a plurality of second fixing portions 212 in sequence along its height direction, and the length (i.e., height) of the limiting claw 2 is adjusted by making the first fixing portion 213 cooperate with the second fixing portions 212 of different heights. Preferably, the first fixing portion 213 and the second fixing portion 212 can be fixing holes. After determining the length of the limiting claw 2, the fixing member 4 can be used to penetrate the first fixing portion 213 and the second fixing portion 212, so that the adjustment section 21B cannot slide relative to the main body 21A.

[0041] It should be noted that the first fixing portion 213 can also be arranged on the main body 21A, and multiple second fixing portions 212 are correspondingly arranged on the adjustment section 21B. The first fixing portion 213 and one of the second fixing portions 212 are penetrated by the fixing member 4, so that the adjustment section 21B cannot slide relative to the main body 21A.

[0042] In one embodiment, the fixing member 4 includes an elastic member 41 and a fixing pin 42. The elastic member 41 can be arranged in the first fixing portion 213. The elastic member 41 can be a spring or the like. The fixing pin 42 has a guide surface and is set against the other end of the elastic member 41. The guide surface can guide the fixing pin 42 to slide in the first fixing portion 213 and the second fixing portion 212. Preferably, the elastic member 41 and the fixing pin 42 can be coaxially arranged. When it is necessary to adjust the length of the limiting claw 2, pressure is applied to the fixing pin 42 to compress the elastic member 41, and the fixing pin 42 withdraws from the second fixing portion 212 and completely retracts into the first fixing portion 213, and then moves the adjustment section 21B. After moving into place, when the fixing pin 42 reaches the next second fixing portion 212, it is ejected from the first fixing portion 213 into the second fixing portion 212 under the action of the elastic member 41, thereby changing the relative position of the adjustment section 21B and the downward extending section 21.

[0043] In one embodiment, a positioning block 421 is provided on the outer peripheral surface of the fixing pin 42. When the fixing pin 42 is inserted into the second fixing portion 212, the positioning block 421 abuts against the surface of the main body portion 21A. A clearance groove 2131 for inserting the positioning block 421 is provided in the axial direction of the first fixing portion 213. The positioning block 421 can be inserted into the clearance groove 2131 and can move along the clearance groove 2131. The clearance groove 2131 and the positioning block 421 cooperate so that the fixing pin 42 always moves in the extension direction of the clearance groove 2131. The positioning block 421 is configured so that the maximum diameter of the fixing pin 42 is greater than the diameter of the second fixing portion 212. The fixing pin 42 will only partially enter the second fixing portion 212, and will not enter the second fixing portion 212 entirely and fall off from the second fixing portion 212.

[0044] In summary, the protective cover of the present application has a lower end surface of the protective cover body 1 provided with an accommodating space 11. The accommodating space 11 wraps the battery pack interface 51, thereby isolating the metal electrode at the battery pack interface 51 from the external environment, which can avoid dust contamination and improve safety. The stacking arrangement of multiple protective cover bodies 1 can realize the simultaneous placement of multiple battery packs, thereby improving the placement efficiency of the battery pack 5. In addition, the length of the limiting claw 2 can be adjusted, and the protective cover can adapt to more battery packs 5 of different specifications, which is more universal.

[0045] In another embodiment of the present application, a battery pack is provided, such as Fig.11 As shown, the battery pack includes two or more battery packs 5 and the above-mentioned protective cover. In two adjacent protective cover bodies 1, the horizontal support section 22 of the limiting claw 2 of the protective cover body 1 arranged on the upper side can be inserted into the card slot 13 of the protective cover body 1 arranged on the lower side. Thus, a protective space is formed between the two adjacent protective cover bodies 1, and the battery pack 5 can be accommodated in the protective space. Multiple protective cover bodies 1 are stacked in sequence to form multiple protective spaces, each of which can accommodate a battery pack 5, so that the protective cover group can accommodate multiple battery packs 5 at the same time.

[0046] In one embodiment, one end of the accommodating space 11 has an opening, and the battery pack 5 is provided with a guide groove 52. The inner wall of the protective cover body 1 is provided with a guide rail 111 that matches the guide groove 52 along the length direction of the accommodating space 11. The battery pack interface 51 can move along the guide rail 111 from the opening and be clamped in the accommodating space 11, thereby further improving the stable connection between the protective cover body 1 and the battery pack 5.

[0047] In summary, the battery pack forms multiple protection spaces by stacking multiple protection cover bodies 1, thereby protecting multiple battery packs 5 while realizing the simultaneous placement of multiple battery packs 5. In addition, a guide rail 111 is further provided in the accommodating space 11 to further ensure the stable connection between the battery pack 5 and the protection cover body 1.

[0048] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A protective cover for installation on a battery pack interface, characterized in that: The protective cover comprises: A protective cover body (1), wherein the protective cover body (1) is formed with a card slot (13) and an accommodating space (11) is provided on the lower end surface of the protective cover body (1); and A limiting claw (2) is arranged on the side of the protective cover body (1) and is rotatably connected to the protective cover body (1); the limiting claw (2) comprises a downward extending section (21) and a horizontal supporting section (22) bent from the end of the downward extending section (21); the horizontal supporting section (22) can be inserted into a slot (13) of another protective cover body (1).

2. The protective cover according to claim 1, characterized in that: A connecting shaft (121) is provided on the side of the protective cover body (1), a supporting portion (211) is provided on the side of the downward extending section (21) facing the protective cover body (1), and the limiting claw (2) is sleeved on the connecting shaft (121) through the supporting portion (211) and can rotate around the connecting shaft (121).

3. The protective cover according to claim 2, characterized in that: A reset member (3) is sleeved on the connecting shaft (121), one end of the reset member (3) abuts against the side wall of the protective cover body (1), and the other end abuts against the downward extending section (21); the reset member (3) has a tendency to make the limiting claw (2) always approach the protective cover body (1).

4. The protective cover according to claim 3, characterized in that: The side wall of the protective cover body (1) and the side of the downwardly extending section (21) facing the protective cover body (1) are both provided with a mounting portion (31), and the end of the reset member (3) cooperates with the mounting portion (31).

5. The protective cover according to claim 3, characterized in that: The reset member (3) is a torsion spring, and one end of the connecting shaft (121) is provided with a plurality of limiting portions (1211) along the circumference of the connecting shaft (121). The limiting portions (1211) are abutted against one end of the supporting portion (211) to limit the axial movement of the limiting claw (2) along the connecting shaft (121).

6. The protective cover according to claim 1, characterized in that: The downward extending section (21) comprises a main body portion (21A), an adjustment section (21B) connected to the main body portion (21A), and a horizontal support section (22) bent from the end of the adjustment section (21B), wherein the adjustment section (21B) is capable of sliding relative to the main body portion (21A) along the height direction of the main body portion (21A).

7. The protective cover according to claim 6, characterized in that: One of the adjustment section (21B) or the main body (21A) is provided with a first fixing portion (213), and the other of the main body (21A) or the adjustment section (21B) is provided with a plurality of second fixing portions (212) along its height direction; a fixing member (4) is provided between the adjustment section (21B) and the main body (21A), and the fixing member (4) is installed in the first fixing portion (213) and one of the second fixing portions (212), and can selectively fix the position of the adjustment section (21B) relative to the main body (21A).

8. The protective cover according to claim 7, characterized in that: The fixing member (4) comprises: An elastic member (41) is arranged in the first fixing portion (213); The fixing pin (42) has a guide surface and is disposed against the other end of the elastic member (41), and the fixing pin (42) is capable of sliding inside the first fixing portion (213) and the second fixing portion (212).

9. The protective cover according to claim 8, characterized in that: A positioning block (421) is provided on the outer peripheral surface of the fixing pin (42); when the fixing pin (42) is inserted into the second fixing portion (212), the positioning block (421) abuts against the surface of the main body portion (21A); and a clearance groove (2131) for inserting the positioning block (421) is provided in the axial direction of the first fixing portion (213).

10. A battery pack, characterized in that: The invention comprises two or more battery packs (5) and a protective cover as claimed in any one of claims 1 to 9; in two adjacent protective cover bodies (1), a horizontal support section (22) of a limiting claw (2) of the protective cover body (1) arranged at the upper side can be inserted into a slot (13) of the protective cover body (1) arranged at the lower side; a protective space is formed between the two adjacent protective cover bodies (1), and the battery pack (5) is accommodated in the protective space; the battery pack (5) is provided with a guide groove (52), one end of the accommodating space (11) has an opening, and the inner wall of the protective cover body (1) is provided with a guide rail (111) matching the guide groove (52) along the length direction of the accommodating space (11), and the battery pack interface (51) can move from the opening along the guide rail (111) and be clamped in the accommodating space (11).

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