A backpack battery pack

Abstract

The application relates to a backpack battery pack, which comprises a battery pack body; the battery pack body has a containing space; the battery pack body further comprises a heat dissipation assembly, the heat dissipation assembly comprises a heat dissipation cover plate, a through part installed in the heat dissipation cover plate and a fan for driving air flow; the heat dissipation cover plate has a through part mounting portion, the through part mounting portion has a mounting through slot, the through part is mounted in the mounting through slot, the through part has a through main body, a through cover plate located at one end of the through main body, a through inlet arranged at the other end of the through main body and a through opening arranged on the outer periphery of the through main body and close to the through cover plate; the mounting through slot has a stepped surface, and the through cover plate can selectively abut or retreat from the stepped surface; when the fan is turned on, gas flows to the mounting through slot, enters from the through inlet and flows out from the through opening, so that heat dissipation in the battery pack is realized.

Description

Technical Field

[0001] This application relates to the field of battery packs, and in particular to a backpack-type battery pack. Background Technology

[0002] With the development of science and technology, the electrification and cordless operation of tools have become a trend. Power tools, powered by motors, drive the working head through a transmission mechanism, enabling them to quickly complete tasks such as drilling, cutting, grinding, and assembly, greatly improving work efficiency and reducing labor intensity. To meet the needs of long-term, high-power usage scenarios, backpack battery packs have entered the market.

[0003] However, when power tools are used for extended periods and / or at high power, the battery pack often generates significant heat, and the temperature can rise rapidly, potentially posing some dangers.

[0004] Therefore, it is necessary to provide a backpack-style battery pack that solves the heat dissipation problem. Utility Model Content

[0005] Therefore, it is necessary to provide a backpack-style battery pack to address the heat dissipation problem.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In one embodiment, a backpack battery pack is provided for use with power tools or garden tools. The backpack battery pack includes a battery pack body and a backplate support for supporting the battery pack body. The battery pack body has a receiving space, and further includes a battery cell module and a controller installed within the receiving space. The battery pack body also includes a heat dissipation assembly, which includes a heat dissipation cover, a conductive element installed within the heat dissipation cover, and a fan for driving airflow. The heat dissipation cover has the conductive element installed within it. The device includes a mounting groove for the conductive component, in which the conductive component is installed. The conductive component has a conductive body, a conductive cover plate at one end of the conductive body, a conductive inlet at the other end of the conductive body, and a conductive opening on the outer periphery of the conductive body adjacent to the conductive cover plate. The mounting groove has a stepped surface, and the conductive cover plate can selectively abut against or retract from the stepped surface. When the fan is turned on, gas flows into the mounting groove, enters through the conductive inlet, and then flows out through the conductive opening.

[0008] In some preferred embodiments, the conductive mounting portion is further provided with a mating groove corresponding to the mounting groove, and the conductive component also has a mating member disposed on the outer periphery of the conductive body, wherein the mating groove and the mating member cooperate.

[0009] In some preferred embodiments, the heat dissipation assembly is further provided with a spring located in the mating groove, one end of which abuts against the end wall of the mating groove, and the other end of which abuts against the mating member. When the fan is turned on, driven by the fan, gas flows into the mounting groove, then enters through the through inlet, and pushes the through member to move outward against the elastic force. Then, the gas flows out from the through opening. When the fan is turned off, under the action of the spring, the through member moves inward, the through cover abuts against the stepped surface, and the gas in the receiving space is separated from the outside.

[0010] In some preferred embodiments, the mating groove is a through groove; the heat dissipation assembly is also provided with a sealing element, and the heat dissipation assembly is also provided with a rubber gasket corresponding to the sealing element, the rubber gasket being disposed between the sealing element and the heat dissipation cover and being tightly pressed together.

[0011] In some preferred embodiments, the seal is provided with a frame-shaped rib that presses against the rubber gasket.

[0012] In some preferred embodiments, the seal is further provided with a first limiting portion, and the mating member is further provided with a second limiting portion, wherein the first limiting portion and the second limiting portion cooperate to define the sliding range of the conductor.

[0013] In some preferred embodiments, the battery pack body has a heat dissipation component mounting groove close to the backplate bracket, the heat dissipation component mounting groove being recessed; the heat dissipation component is mounted in the heat dissipation component mounting groove.

[0014] In some preferred embodiments, the heat dissipation cover has a recessed mating cover portion, the heat dissipation component mounting groove has a mating groove, the mating groove has a mating through hole and a mating opening, the mating through hole connects the receiving space and the mating cover portion, the mating opening has an outwardly protruding opening flange, the mating cover portion fully engages with the opening flange, and the outer periphery of the opening flange also has a retaining groove for securing an O-ring; the heat dissipation cover also has a cover portion channel corresponding to the mating cover portion, the cover portion channel and the receiving space are connected through the mating through hole.

[0015] In some preferred embodiments, the fan is mounted on the docking groove, the fan has positioning holes, the positioning holes include a first positioning hole and a second positioning hole, the bottom surface of the docking groove has a first positioning post, and the bottom surface of the docking cover has a second positioning post; the first positioning post is inserted into the first positioning hole of the fan, and the second positioning post is inserted into the second positioning hole of the fan; the first positioning hole and the second positioning hole are designed to communicate with each other.

[0016] In some preferred embodiments, the backplate bracket has a hook and a locking element, and the battery pack body has a hole corresponding to the hook and a locking part corresponding to the locking element; the hole can engage with the hook, and the locking part can engage with the locking element.

[0017] In this embodiment, the battery pack body further includes a heat dissipation assembly, which includes a heat dissipation cover plate, a conductive element installed in the heat dissipation cover plate, and a fan for driving airflow. The heat dissipation cover plate has a conductive element mounting portion with a mounting groove. The conductive element is installed in the mounting groove. The conductive element has a conductive body, a conductive cover plate located at one end of the conductive body, a conductive inlet located at the other end of the conductive body, and a conductive opening located on the outer periphery of the conductive body and adjacent to the conductive cover plate. The mounting groove has a stepped surface, and the conductive cover plate can selectively abut against or retract from the stepped surface. When the fan is turned on, gas flows into the mounting groove, enters from the conductive inlet, and then flows out from the conductive opening, thereby achieving heat dissipation inside the battery pack. Attached Figure Description

[0018] Figure 1 This is a perspective view of a backpack battery pack according to an embodiment of this application;

[0019] Figure 2 This is a perspective view of a backpack battery pack in one embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the main body of the backpack-type battery pack in one embodiment of this application;

[0021] Figure 4 This is a disassembled schematic diagram of some parts of the main body of the backpack-type battery pack in one embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the combination of the first battery pack housing and the second battery pack housing in an embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of the heat dissipation assembly (excluding the fan) of a backpack battery pack according to one embodiment of this application;

[0024] Figure 7 For the heat dissipation assembly (excluding the fan) of the backpack battery pack in one embodiment of this application, along Figure 6 Sectional view along direction II;

[0025] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0026] Figure 9 This is a disassembled schematic diagram of the heat dissipation components (excluding the fan) of a backpack battery pack according to one embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the heat dissipation cover of a backpack battery pack in one embodiment of this application;

[0028] Figure 11 This is a schematic diagram of the conductive element of a backpack battery pack in one embodiment of this application;

[0029] Figure 12 This is a schematic diagram of the conductive element of a backpack battery pack in one embodiment of this application from another perspective. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figures 1 to 2 One embodiment of this application provides a backpack battery pack 100, which can be used with power tools or garden tools to provide a longer working time. The backpack battery pack 100 includes a battery pack body 1 and a backplate bracket 2 for supporting the battery pack body 1. See also... Figure 3 The battery pack body 1 may include a first battery pack housing 11 and a second battery pack housing 12. The first battery pack housing 11 and the second battery pack housing 12 together define a receiving space. The battery pack body 1 also includes a cell module (not shown) and a controller (not shown) installed in the receiving space. The backplate support 2 is in the shape of a rigid plate, with a hook on the lower side and a locking member on the upper side. The battery pack body 1 has a locking hole corresponding to the hook of the backplate support 2 and a locking part corresponding to the locking member. The locking hole engages with the hook, and the locking part and the locking member engage to achieve a fixed connection between the backplate battery pack body 1 and the backplate support 2. The backplate support 2 also has a carrying strap for users to carry.

[0037] See Figures 3 to 4 The battery pack body 1 further includes a heat dissipation assembly 13 for dissipating heat from the interior of the battery pack body 1. The first battery pack housing 11 has a heat dissipation assembly mounting groove 111 close to the backplate bracket 2, the heat dissipation assembly mounting groove 111 being recessed; the heat dissipation assembly 13 is mounted within the heat dissipation assembly mounting groove 111. (See reference...) Figure 4 and Figure 9 The heat dissipation assembly 13 may include a heat dissipation cover plate 131, a conductor 132 installed in the heat dissipation cover plate 131, and a fan 133 for driving airflow.

[0038] See Figures 3 to 6 The heat dissipation cover 131 is fixed in the heat dissipation component mounting groove 111 by screws and has a recessed mating cover portion 1311. The heat dissipation component mounting groove 111 is provided with a mating groove 1111, which is further provided with a mating through hole 11111 and a mating opening 11112. The mating through hole 11111 connects the receiving space and the mating cover portion 1311. The mating opening 11112 is provided with an outwardly protruding opening flange. The mating cover portion 1311 completely engages with the opening flange to form a sealed connection. In this embodiment, the inner diameter of the mating cover portion 1311 is slightly larger than the outer diameter of the opening flange. In order to better achieve a sealed connection, the outer periphery of the opening flange is provided with a retaining groove for securing an O-ring. The O-ring is held between the opening flange and the mating cover portion 1311, realizing a sealed connection between the mating opening 11112 and the mating cover portion 1311. The heat dissipation cover 131 also has a cover channel corresponding to the mating cover 1311. Because the mating opening 11112 is sealed and connected to the mating cover 1311, the cover channel and the receiving space are connected through the mating through hole 11111. In this embodiment, to accelerate airflow, the fan 133 is installed in the mating groove 1111, driving air from the receiving space through the mating through hole 11111 to the cover channel. In this embodiment, for ease of installation, the fan 133 has a positioning hole, the bottom surface of the mating groove 1111 has a first positioning post, and the bottom surface of the mating cover 1311 has a second positioning post; the first positioning post is inserted into the first positioning hole on the first surface of the fan 133, and the second positioning post is inserted into the second positioning hole on the second surface of the fan 133, thus fixing the fan 133. In this embodiment, the first positioning hole on the first surface of the fan 133 and the second positioning hole on the second surface of the fan 133 can be designed to communicate. To further ensure the stability of the fan 133 installation, the mating groove 1111 is provided with a limiting rib, which abuts against the outer periphery of the fan 133. Furthermore, the outer periphery of the fan 133 is square, allowing the limiting rib to abut against the outer periphery of the fan 133 more tightly, thus ensuring the stability of the fan installation.

[0039] See Figure 10The heat dissipation cover 131 also has a conductive element mounting portion, which has a mounting groove 13131 and a mating groove 13132 corresponding to the mounting groove 13131. The mounting groove 13131 communicates with the cover channel. The conductive element 132 is installed in the mounting groove 13131. (See reference...) Figures 11 to 12 The conductive element 132 includes a conductive body 1321, a conductive cover plate 1322 located at one end of the conductive body 1321, a conductive inlet 1323 located at the other end of the conductive body 1321, a conductive opening 1324 located on the outer periphery of the conductive body 1324 and adjacent to the conductive cover plate 1322, and a mating element 1325 located on the outer periphery of the conductive body 1321. (See reference...) Figures 7 to 8The mounting groove 13131 has a stepped surface. In its natural state, the guide cover 1322 abuts against the stepped surface, isolating the cover channel from the outside. The mating groove 13132 and the mating member 1325 cooperate to allow the guide member 132 to slide within the mounting groove 13131. In this embodiment, the heat dissipation assembly 13 also includes a spring 136 located in the mating groove 13132. One end of the spring abuts against the end wall of the mating groove 13132, and the other end abuts against the mating member 1325, giving the guide member 132 a tendency to slide inward. In its natural state, under the action of the elastic force, the guide cover 1322 of the guide member 132 abuts against the stepped surface, preventing the gas in the containment space from communicating with the outside. In this embodiment, for ease of installation, the mating groove 13132 is a through groove. The heat dissipation assembly 13 also includes a sealing element 134. The sealing element 134 has raised ribs forming a frame, which press against the outer periphery of the mating groove 13132 to prevent gas from flowing out of the mating groove 13132. To further ensure the sealing effect, the heat dissipation assembly 13 also includes a rubber gasket 135 corresponding to the sealing element 134. The rubber gasket 135 is located between the sealing element 134 and the heat dissipation cover plate 131 and is tightly pressed together. When the fan 133 is turned on, the gas flows into the mounting groove 13131 under the drive of the fan 133. The gas enters from the inlet 1323 and pushes the conductor 132 to overcome the elastic force and move outward. Then, the gas flows out from the opening 1324 to realize the outward flow of gas in the containment space, thereby achieving heat dissipation and cooling inside the battery pack body 1. When the fan 133 is turned off, under the action of the spring 136, the conductor 132 moves inward, and the conductor cover 1322 abuts against the stepped surface, preventing the gas in the containment space from communicating with the outside. In this embodiment, the sealing member 134 is further provided with a first limiting part 1341, and the mating member 1325 is further provided with a second limiting part 13251. The first limiting part 1341 and the second limiting part 13251 cooperate to define the sliding range of the conductor 132. In a preferred embodiment, the mating member 1325 can be integrally disposed on the outer periphery of the conductor body 1321; in another preferred embodiment, the mating member 1325 can be assembled and disposed on the outer periphery of the conductor body 1321.

[0040] During production and installation, the conductive component 132 is first assembled onto the heat dissipation cover 131, the rubber gasket 135 and the sealing component 134 are then assembled onto the heat dissipation cover 131, and then the assembled assembly is installed onto the battery pack body 1.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A backpack-style battery pack for use with power tools or garden tools, characterized in that, The backpack-type battery pack includes a battery pack body and a backplate bracket for supporting the battery pack body; the battery pack body has a receiving space, and the battery pack body also includes a cell module and a controller installed in the receiving space; the battery pack body also includes a heat dissipation assembly, the heat dissipation assembly includes a heat dissipation cover plate, a conductive element installed in the heat dissipation cover plate, and a fan for driving airflow; the heat dissipation cover plate has a conductive element mounting part, the conductive element mounting part has a mounting slot, the conductive element is installed in the mounting slot, the conductive element has a conductive body, a conductive cover plate located at one end of the conductive body, a conductive inlet located at the other end of the conductive body, and a conductive opening located on the outer periphery of the conductive body and adjacent to the conductive cover plate; the mounting slot has a stepped surface, and the conductive cover plate can selectively abut against or retract from the stepped surface; when the fan is turned on, gas flows into the mounting slot, enters from the conductive inlet, and then flows out from the conductive opening.

2. The backpack battery pack according to claim 1, characterized in that, The conductive component mounting part is further provided with a mating groove corresponding to the mounting groove, and the conductive component also has a mating part disposed on the outer periphery of the conductive body, the mating groove and the mating part cooperating.

3. The backpack battery pack according to claim 2, characterized in that, The heat dissipation assembly is also equipped with a spring located in the mating groove. One end of the spring abuts against the end wall of the mating groove, and the other end abuts against the mating member. When the fan is turned on, driven by the fan, the gas flows into the mounting groove, then enters through the through inlet, and pushes the through member to overcome the elastic force and move outward. Then, the gas flows out from the through opening. When the fan is turned off, under the action of the spring, the through member moves inward, the through cover abuts against the stepped surface, and the gas in the receiving space is separated from the outside.

4. The backpack battery pack according to claim 3, characterized in that, The mating groove is a through groove; the heat dissipation assembly is also provided with a sealing element, and the heat dissipation assembly is also provided with a rubber gasket corresponding to the sealing element. The rubber gasket is located between the sealing element and the heat dissipation cover plate and is tightly pressed together.

5. The backpack battery pack according to claim 4, characterized in that, The sealing element is provided with a frame-shaped rib, which is pressed against the rubber gasket.

6. The backpack battery pack according to claim 4, characterized in that, The sealing element is further provided with a first limiting part, and the mating element is further provided with a second limiting part. The first limiting part and the second limiting part cooperate to define the sliding range of the conductive element.

7. The backpack battery pack according to claim 1, characterized in that, The battery pack body has a heat dissipation component mounting groove close to the back plate bracket, and the heat dissipation component mounting groove is recessed; the heat dissipation component is installed in the heat dissipation component mounting groove.

8. The backpack battery pack according to claim 7, characterized in that, The heat dissipation cover has a recessed mating cover portion, the heat dissipation component mounting groove has a mating groove, the mating groove has a mating through hole and a mating opening, the mating through hole connects the receiving space and the mating cover portion, the mating opening has an outwardly protruding opening flange, the mating cover portion completely engages with the opening flange, and the outer periphery of the opening flange also has a retaining groove for securing an O-ring; the heat dissipation cover also has a cover portion channel corresponding to the mating cover portion, the cover portion channel and the receiving space are connected through the mating through hole.

9. The backpack battery pack according to claim 8, characterized in that, The fan is installed in the docking groove. The fan has positioning holes, including a first positioning hole and a second positioning hole. The bottom surface of the docking groove has a first positioning post, and the bottom surface of the docking cover has a second positioning post. The first positioning post is inserted into the first positioning hole of the fan, and the second positioning post is inserted into the second positioning hole of the fan. The first positioning hole is designed to be connected to the second positioning hole.

10. The backpack battery pack according to claim 1, characterized in that, The backplate bracket has a hook and a locking element. The battery pack body has a hole corresponding to the hook and a locking part corresponding to the locking element. The hole can engage with the hook, and the locking part can engage with the locking element.

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