A mobile power supply device

Abstract

The utility model discloses a kind of mobile power supply devices, including battery assembly and circuit board component, the battery assembly includes steel shell and the electric core in the steel shell inside, the steel shell is the at least one part shell of the mobile power supply device, the circuit board component and the battery assembly electrically connected, the circuit board component includes circuit board shell and the circuit board in the circuit board shell inside.The mobile power supply device of the utility model, while taking into account large capacity, mobile power supply thickness can also be controlled, so that lighter and portable.

Description

Technical Field

[0001] This utility model relates to a mobile power supply device. Background Technology

[0002] With the continuous development of technology, electronic or digital products are showing a trend of diversified development, constantly facilitating and enriching people's work and life in various aspects, and gradually becoming indispensable entertainment or assistant tools. The normal operation of electronic or digital products cannot be separated from the power supply of the power source. However, the built-in batteries of electronic products generally have limited capacity and only a limited battery life. With the iteration of electronic or digital products, the operation of more advanced functions often requires more power. Based on this, it is generally necessary to carry a power bank for charging at any time when not indoors.

[0003] As the capacity requirements of power banks increase, the capacity design of the internal battery cells must meet these requirements. The design of battery cell capacity often depends on the content of positive electrode active material. The higher the battery cell capacity, the more positive electrode active material there is, the longer the electrode plates in the wound battery cell will be, and the more electrode plates there will be in the stacked battery cell, thus making the battery cell thicker. In order to make the current design of power banks conform to the grip size of the human hand, large-capacity battery cells are often thicker without changing the length and width. The resulting power banks are not easy to grip and carry, and cannot balance large capacity and user experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a mobile power supply device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a mobile power supply device, including a battery assembly and a circuit board assembly. The battery assembly includes a steel shell and battery cells disposed inside the steel shell. The steel shell is at least a part of the housing of the mobile power supply device. The circuit board assembly and the battery assembly are electrically connected. The circuit board assembly includes a circuit board housing and a circuit board disposed inside the circuit board housing.

[0006] Furthermore, the battery assembly also includes a first conductive element disposed at one end of the steel shell, one end of the first conductive element being connected to the positive electrode tab of the battery cell, and the other end of the first conductive element being connected to a second conductive element.

[0007] Furthermore, the battery assembly also includes a third conductive element disposed at one end of the steel shell, one end of the third conductive element being connected to the negative electrode tab of the battery cell, and the other end of the third conductive element being connected to a fourth conductive element.

[0008] Furthermore, the first conductive element and / or the third conductive element are electrode posts, and the second conductive element and / or the fourth conductive element are nickel sheets.

[0009] Furthermore, the steel shell is provided with a first through hole and a second through hole, the first conductive element is exposed through the first through hole, the third conductive element is exposed through the second through hole, a first insulating element is provided between the first conductive element and the first through hole, and a second insulating element is provided between the third conductive element and the second through hole.

[0010] Furthermore, the circuit board assembly includes a circuit board housing and a circuit board disposed inside the circuit board housing, and two pins of the circuit board are respectively connected to the second conductive element and the fourth conductive element.

[0011] Furthermore, the circuit board housing is provided with a charging / discharging interface and a display unit.

[0012] Furthermore, the steel shell includes a middle frame, and a first facet and a second facet disposed at opposite ends of the middle frame, the middle frame having a radius (R-angle).

[0013] Furthermore, the radius of the R-angle is 0.1-0.3 mm.

[0014] Furthermore, the circuit board housing is connected to the R-corner position of the middle frame.

[0015] In summary, the beneficial effects of this utility model are as follows: This utility model of a mobile power bank device, while taking into account a large capacity, can also control the thickness of the mobile power bank, making it lighter and more portable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the mobile power supply device of this utility model; Figure 2 for Figure 1 A schematic diagram of the battery assembly of the mobile power supply device shown. Figure 3 for Figure 1 A schematic diagram showing the interaction between the battery assembly and the circuit board assembly of the mobile power supply device.

[0017] Attached Figure

[0018] Battery assembly 1, circuit board assembly 2, steel shell 11, first conductive component 12, third conductive component 13, second conductive component 14, fourth conductive component 15, circuit board housing 21, upper shell 211, lower shell 212, circuit board 213. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please see Figures 1-3 This utility model provides a mobile power device, including a battery assembly 1 and a circuit board assembly 2. The battery assembly includes a steel shell and a battery cell disposed inside the steel shell. The steel shell is at least a part of the housing of the mobile power device. The circuit board assembly and the battery assembly are electrically connected. The circuit board assembly includes a circuit board housing and a circuit board disposed inside the circuit board housing.

[0021] The outer casing of the mobile power device includes a steel shell and a circuit board shell, wherein the steel shell is the outer casing of the battery assembly, and the circuit board shell is the outer casing of the circuit board assembly.

[0022] The present invention relates to a mobile power supply device, wherein the battery assembly includes a steel shell and a battery cell disposed inside the steel shell. Compared with existing soft-pack batteries (which include an aluminum-plastic film shell, a battery cell disposed inside the aluminum-plastic film shell, and a power bank shell disposed on the outer surface of the aluminum-plastic film shell), the steel-shell battery has a higher energy density than soft-pack batteries because the aluminum-plastic film shell is a flexible aluminum-plastic film (nylon-aluminum-PP). The aluminum-plastic film needs to be perforated during manufacturing, and the perforation process makes the edges of the perforated aluminum-plastic film rounded. Therefore, under the same structural design, the steel shell has a certain rigidity and stable internal structure, and the battery cell design can be more compact. Thus, the steel-shell battery has a higher energy density than soft-pack batteries. Under the same energy density and with the same battery cell design length and width, the steel-shell battery can be made thinner. At the same time, while taking into account large capacity, the thickness of the mobile power supply can be controlled, making it lighter and more portable.

[0023] In one embodiment, the battery assembly further includes a first conductive element disposed at one end of the steel casing. One end of the first conductive element is connected to the positive electrode tab of the battery cell, and the other end of the first conductive element is connected to a second conductive element 14. In this case, the negative electrode tab of the battery cell is connected to the inner surface of the steel casing, meaning the steel casing is negatively charged. The circuit board housing can be made of plastic or metal (if the circuit board housing is made of metal, it needs to have the same properties as the steel casing; otherwise, a short circuit will occur). When the circuit board housing is made of metal, the charging / discharging structure has an insulating portion.

[0024] In one embodiment, the battery assembly further includes a third conductive element 13 disposed at one end of the steel casing, one end of the third conductive element being connected to the negative electrode tab of the battery cell, and the other end of the third conductive element being connected to a fourth conductive element 15. In this case, the negative electrode tab of the battery cell is not connected to the inner surface of the steel casing, and the circuit board housing is made of plastic material.

[0025] In one embodiment, the first conductive element and / or the third conductive element are electrode posts, and the second conductive element and / or the fourth conductive element are nickel sheets. The conductive elements can be configured such that the first conductive element is an electrode post, the third conductive element is a steel casing, and the second and fourth conductive elements are nickel sheets; alternatively, the first conductive element is a steel casing, the third conductive element is an electrode post, and the second and fourth conductive elements are nickel sheets; or the first and third conductive elements are electrode posts, and the second and fourth conductive elements are nickel sheets. Preferably, the first conductive element is an electrode post, the third conductive element is a steel casing, and the second and fourth conductive elements are nickel sheets.

[0026] In one embodiment, the steel shell is provided with a first through hole and a second through hole, respectively. The first conductive component is exposed through the first through hole, and the third conductive component is exposed through the second through hole. A first insulating component is provided between the first conductive component and the first through hole, and a second insulating component is provided between the third conductive component and the second through hole. Specifically, the first insulating component and the second insulating component can be insulating gaskets or other components that can provide insulation.

[0027] In one embodiment, two pins of the circuit board are connected to the second conductive element and the fourth conductive element, respectively.

[0028] In one embodiment, the circuit board housing is provided with a charging / discharging interface and a display unit.

[0029] In one embodiment, the steel shell includes a middle frame, and a first facet and a second facet disposed at opposite ends of the middle frame. The middle frame has rounded corners. Specifically, the middle frame is a hollow frame structure with openings at both ends. The first facet is disposed at one end of the middle frame, and the second facet is disposed at the other end of the middle frame. By providing the first facet and the second facet, the openings at both ends of the middle frame can be sealed. Specifically, the four corners of the middle frame have rounded corners.

[0030] In one embodiment, the radius of the R-angle is 0.1-0.3 mm.

[0031] In one embodiment, the circuit board housing is connected to the rounded corners of the mid-frame. Specifically, the circuit board assembly is connected to the two rounded corners on the same side of the mid-frame, and the circuit board assembly is adjacent to the battery cell. Specifically, the circuit board housing includes an upper shell 211 and a lower shell 212, the upper shell and the lower shell are connected to the two rounded corners on the same side of the mid-frame, and the upper shell and the lower shell are adjacent to the battery cell. Specifically, the upper shell and the lower shell are fixedly connected to the mid-frame by welding, gluing, or other methods.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A portable power bank device, characterized in that, The device includes a battery assembly and a circuit board assembly. The battery assembly includes a steel casing and battery cells disposed inside the steel casing. The steel casing is at least a part of the housing of the mobile power device. The circuit board assembly and the battery assembly are electrically connected.

2. The mobile power supply apparatus of claim 1, wherein The battery assembly further includes a first conductive element disposed at one end of the steel shell, one end of the first conductive element being connected to the positive electrode tab of the battery cell, and the other end of the first conductive element being connected to a second conductive element.

3. The mobile power supply apparatus of claim 2, wherein The battery assembly also includes a third conductive element disposed at one end of the steel shell, one end of the third conductive element being connected to the negative electrode tab of the battery cell, and the other end of the third conductive element being connected to a fourth conductive element.

4. The mobile power supply apparatus of claim 3, wherein The first conductive element and / or the third conductive element are electrode posts, and the second conductive element and / or the fourth conductive element are nickel sheets.

5. The mobile power supply apparatus of claim 3, wherein, The steel shell is provided with a first through hole and a second through hole respectively. The first conductive component is exposed through the first through hole, and the third conductive component is exposed through the second through hole. A first insulating component is provided between the first conductive component and the first through hole, and a second insulating component is provided between the third conductive component and the second through hole.

6. The mobile power supply apparatus of claim 3, wherein, The two pins of the circuit board are respectively connected to the second conductive element and the fourth conductive element.

7. The mobile power source device of claim 1, wherein, The circuit board assembly includes a circuit board housing and a circuit board disposed inside the circuit board housing. The circuit board housing is provided with a charging / discharging interface and a display unit.

8. The mobile power supply apparatus of claim 7, wherein, The steel shell includes a middle frame, and a first facet and a second facet located at opposite ends of the middle frame. The middle frame has rounded corners.

9. The mobile power source device of claim 8, wherein, The radius of the R-angle is 0.1-0.3 mm.

10. The mobile power supply apparatus of claim 8, wherein, The circuit board housing is connected to the R-corner of the middle frame.

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