Battery structure and electronic device

Abstract

The present disclosure relates to a battery structure and an electronic device. The battery structure comprises a battery circuit board and two battery modules. The two battery modules are symmetrically arranged on both sides of the battery circuit board and connected with the battery circuit board. The first end of each flexible circuit board is connected with the battery circuit board, and the second end of each flexible circuit board is arranged to be connected with the mainboard of the electronic device. The first heat dissipation member is located between the two battery modules and is connected with the battery circuit board and the middle frame assembly of the electronic device. In the present disclosure, the plurality of flexible circuit boards are connected with the battery circuit board, and the plurality of flexible circuit boards simultaneously charge the battery modules to realize a fast charging mode, reduce the impedance of each flexible circuit board, and effectively reduce the heat generated by each flexible circuit board. The first heat dissipation member is connected with the battery circuit board and the middle frame assembly of the electronic device, respectively, conducts the heat in the battery circuit board to the middle frame assembly, and further dissipates heat for the battery structure.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and in particular to a battery structure and electronic device. Background Technology

[0002] With the development of technology, consumer electronics such as mobile phones and tablets have become indispensable items in people's work and life. Consumer electronics on the market commonly use lithium-ion polymer batteries to power these devices. However, as the application scenarios of electronic devices become increasingly complex and the number of entertainment applications (APPs) proliferates, power consumption has increased dramatically, failing to meet users' needs. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a battery structure and an electronic device.

[0004] According to a first aspect of the present disclosure, a battery structure is provided, the battery structure including a cell circuit board and two cell modules, wherein the two cell modules are symmetrically arranged on both sides of the cell circuit board along the width direction of the cell circuit board and connected to the cell circuit board.

[0005] The battery structure also includes multiple flexible circuit boards, each of which has a first end connected to the cell circuit board and a second end connected to the motherboard of the electronic device.

[0006] The battery structure further includes a first heat sink located between the two cell modules, which is configured to conduct heat from the cell circuit board to the mid-frame assembly of the electronic device.

[0007] Optionally, the battery structure includes a first flexible circuit board, a second flexible circuit board, and a third flexible circuit board;

[0008] The second flexible circuit board is connected to the battery cell circuit board and the main board of the electronic device, respectively; the third flexible circuit board is connected to the battery cell circuit board and the main board of the electronic device, respectively.

[0009] Wherein, the first end of the first flexible circuit board is connected to the battery cell circuit board, the second end of the first flexible circuit board is connected to the motherboard of the electronic device, and the second end of the first flexible circuit board is set as the discharge port of the battery structure.

[0010] Optionally, the battery cell module includes a battery cell body, a battery cell lead-out section, and a tab unit. The battery cell lead-out section is formed on a first side of the battery cell body, and the tab unit is disposed on the side of the battery cell lead-out section away from the battery cell body and connected to the battery cell lead-out section.

[0011] Along the thickness direction of the battery structure, the first heat sink and the cell circuit board are respectively disposed on both sides of the cell lead-out section. The first heat sink is connected to the cell lead-out section, and the cell circuit board is connected to the cell lead-out section through the tab unit.

[0012] Optionally, the electrode unit includes a positive electrode body and a negative electrode body, which are spaced apart along the width direction of the battery structure.

[0013] Optionally, the positive electrode body includes a first positive electrode bending section, a positive electrode connecting section, a second positive electrode bending section, and a positive electrode extension section connected in sequence. The first positive electrode bending section is fixedly connected to the cell lead-out section, and the positive electrode extension section is connected to the cell circuit board.

[0014] The first positive tab bending section and the second positive tab bending section both extend along the thickness direction of the battery structure; the positive tab connecting section and the positive tab extension section both extend along the length direction of the battery structure; and the cell lead-out section, the positive tab connecting section and the positive tab extension section are stacked sequentially.

[0015] Optionally, the battery cell module further includes a first protective component, which has a first open end. The first protective component covers a first side portion of the battery cell body through the first open end to cover the battery cell lead-out section, the first positive tab bending section, and the positive tab connection section.

[0016] Optionally, the negative electrode body includes a first negative electrode bending section, a negative electrode connecting section, a second negative electrode bending section, and a negative electrode extension section connected in sequence. The first negative electrode bending section is fixedly connected to the cell lead-out section, and the negative electrode extension section is connected to the cell circuit board.

[0017] The first negative electrode tab bending section and the second negative electrode tab bending section both extend along the thickness direction of the battery structure; the negative electrode tab connecting section and the negative electrode tab extension section both extend along the length direction of the battery structure; and the cell lead-out section, the negative electrode tab connecting section and the negative electrode tab extension section are stacked sequentially.

[0018] Optionally, the battery cell module further includes a second protective component, which has a first opening. The second protective component covers the first side of the battery cell body through the first opening to cover the battery cell lead-out section, the first negative electrode bending section, and the negative electrode connection section.

[0019] Optionally, the battery cell module further includes a second heat sink, which is sandwiched between the battery cell lead-out section and the positive electrode tab connection section, such that the battery cell lead-out section is connected in a stacked manner through the second heat sink and the positive electrode tab connection section; and / or,

[0020] The second heat sink is sandwiched between the cell lead-out section and the negative electrode connection section, so that the cell lead-out section is stacked through the second heat sink and the negative electrode connection section.

[0021] Optionally, the battery structure further includes a third heat sink, which is sandwiched between the positive electrode tab connection section and the positive electrode tab extension section, such that the positive electrode tab extension section is stacked and connected to the positive electrode tab connection section through the third heat sink; and / or,

[0022] The third heat sink is sandwiched between the negative electrode tab connecting section and the negative electrode tab extension section, so that the negative electrode tab extension section is stacked and connected to the negative electrode tab connecting section through the third heat sink.

[0023] Optionally, the battery cell circuit board includes a circuit board body, a positive electrode connection portion disposed on the circuit board body, and a negative electrode connection portion disposed on the circuit board body;

[0024] One of the battery cell modules has its positive electrode tab connected to the positive electrode connection part, and the other battery cell module has its negative electrode tab connected to the negative electrode connection part.

[0025] Optionally, the battery cell circuit board further includes an adapter connection portion, which is disposed on the circuit board body;

[0026] The negative electrode of one of the battery cell modules and the positive electrode of the other battery cell module are respectively connected to the adapter connection part.

[0027] Optionally, the battery structure further includes two phase change heat sinks. Along the length of the battery structure, the two phase change heat sinks are respectively disposed on both sides of the circuit board body. The circuit board body is connected to the corresponding cell module through the phase change heat sinks.

[0028] Optionally, the battery structure further includes a temperature detection element, which is disposed on the circuit board body and connected to the cell circuit board.

[0029] Optionally, the battery structure further includes an adhesive tape portion disposed between the two cell modules to wrap the first heat sink and the cell circuit board;

[0030] The adhesive tape portion has an adhesive tape opening end, and at least one of the flexible circuit boards extends out of the adhesive tape portion through the adhesive tape opening end.

[0031] According to a second aspect of the present disclosure, an electronic device is provided, the electronic device including a motherboard, a mid-frame assembly, and a battery structure as described above, the battery structure being connected to the motherboard;

[0032] The battery structure conducts heat from the cell circuit board to the mid-frame assembly through the first heat dissipation component of the battery structure.

[0033] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: Multiple flexible circuit boards are connected to the cell circuit board, allowing multiple flexible circuit boards to charge the cell module simultaneously, thereby increasing the charging speed, achieving a fast charging mode, reducing the impedance of each flexible circuit board, and effectively reducing the heat generated by each flexible circuit board. Furthermore, the first heat sink is connected to both the cell circuit board and the mid-frame assembly of the electronic device, conducting heat from the cell circuit board to the mid-frame assembly, further dissipating heat from the battery structure, reducing the overall temperature of the battery structure, and improving charging efficiency.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0036] Figure 1 This is a schematic diagram of a battery structure according to an exemplary embodiment.

[0037] Figure 2 This is a top view schematic diagram of a battery structure according to an exemplary embodiment.

[0038] Figure 3 yes Figure 2 A schematic cross-sectional view of AA is shown according to an exemplary embodiment.

[0039] Figure 4 yes Figure 3 An enlarged schematic diagram of point A according to an exemplary embodiment.

[0040] Figure 5This is a schematic diagram of the structure of a battery cell module according to an exemplary embodiment.

[0041] Figure 6 This is a schematic diagram of the structure of a protective element according to an exemplary embodiment.

[0042] Figure 7 This is a schematic diagram of the structure of a battery cell circuit board according to an exemplary embodiment.

[0043] Figure 8 This is a schematic diagram of the structure of a battery cell circuit board according to an exemplary embodiment.

[0044] Figure 9 This is a schematic diagram of the adhesive tape portion according to an exemplary embodiment. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0046] In related technologies, with the advent of the era of large screens, battery life is constrained by space limitations, making breakthrough changes difficult. This has led to an increasing demand from users for fast charging of electronic devices. Furthermore, fast charging introduces temperature rise issues to the battery structure. Excessive temperature rise can cause charging current limiting, affecting charging speed. Especially when users are using electronic devices while charging, not only is a fast charging mode needed to keep up with the user's power needs, but it's also crucial to reduce the heat generated during charging to prevent excessively rapid or high temperatures that could pose safety hazards.

[0047] This disclosure provides a battery structure including two cell modules and a cell circuit board. The two cell modules are symmetrically arranged on both sides of the cell circuit board along its width and connected to it. The battery structure also includes multiple flexible circuit boards, each with a first end connected to the cell circuit board and a second end configured to connect to the motherboard of an electronic device. The battery structure further includes a first heat sink located between the two cell modules and connected to both the cell circuit board and the mid-frame assembly of the electronic device. The multiple flexible circuit boards connected to the cell circuit board allow for simultaneous charging of the cell modules, increasing charging speed, achieving a fast charging mode, reducing the impedance of each flexible circuit board, and effectively reducing the heat generated by each flexible circuit board. Furthermore, the first heat sink, connected to both the cell circuit board and the mid-frame assembly of the electronic device, conducts heat from the cell circuit board to the mid-frame assembly, further dissipating heat from the battery structure, reducing the overall temperature of the battery structure, and improving charging efficiency.

[0048] In one exemplary embodiment, such as Figures 1-4 As shown, a battery structure 1 includes a cell circuit board 11 and two cell modules 12. The cell circuit board 11 is, for example, a printed circuit board (PCB), on which multiple electronic components are arranged to realize the corresponding functions of the battery structure 1.

[0049] Along the width direction of the battery cell circuit board 11 (refer to) Figure 1 As shown on the X-axis, two battery cell modules 12 are symmetrically arranged on both sides of the battery cell circuit board 11 and connected to the circuit board 11. The electrode characteristics of the battery cell modules 12 are different, with the positive and negative polarities facing each other. For example, the positive polarity of one battery cell module 12 is opposite to the negative polarity of the other, and vice versa. The battery cell modules 12 store energy through the battery cell circuit board 11, so that when used by the user, the battery cell modules 12 can release energy to power the electronic device, ensuring its normal operation.

[0050] In this embodiment, as Figure 1 As shown, the battery structure 1 also includes multiple flexible printed circuit boards 13 (FPCs). The FPCs 13 are characterized by high wiring density, light weight, thinness, and good bendability. During assembly, the FPCs 13 can be folded, are not easily damaged, and facilitate the assembly and connection of the FPCs 13 with other components, effectively extending the service life of the battery structure 1.

[0051] The first end of each flexible circuit board 13 is connected to the battery cell circuit board 11, and the second end of each flexible circuit board 13 is configured to connect to the motherboard (not shown) of the electronic device. The flexible circuit board 13 and the battery cell circuit board 11, as well as the flexible circuit board 13 and the motherboard of the electronic device, can be connected via board-to-board connectors (BTB), improving the reliability of the connection. The BTB connector has good transmission capability. When the flexible circuit board 13 is connected to the motherboard and the battery cell circuit board 11 via the BTB connector, the motherboard and the battery cell circuit board 11 are connected. Charging current is transmitted through the motherboard, converted into energy by the battery cell circuit board 11, and stored in the battery cell module 12 until the battery cell module 12 is full. When power is needed for the electronic device, the battery cell module 12 converts the energy within it into supply current, which is transmitted to the motherboard of the electronic device to power it and ensure its normal operation.

[0052] In one example, such as Figure 1 , Figure 7 , Figure 8 As shown, the battery structure 1 includes a first flexible circuit board 131, a second flexible circuit board 132 and a third flexible circuit board 133, realizing multiple charging paths and charging the cell module 12 with a high current, thus realizing the fast charging mode of the battery structure 1.

[0053] The first end of the first flexible circuit board 131 is connected to the cell circuit board 11 via a first board-to-board connector, and the second end of the first flexible circuit board 131 is connected to the motherboard (not shown) of the electronic device via a second board-to-board connector. The second end of the first flexible circuit board 131 is configured as a discharge port of the battery structure 1 to supply power to the electronic device. The first flexible circuit board 131 extends along the length of the battery structure 1 and is located on one side of one of the cell modules 12.

[0054] Of course, it should be noted that the setting of the second end of the first flexible circuit board 131 as the discharge port of the battery structure 1 is an illustrative example and does not constitute a limitation on this application. The choice of the first flexible circuit board 131, the second flexible circuit board 132, or the third flexible circuit board 133 depends on the actual internal spatial layout design of the electronic device, and the discharge port can be replaced according to actual needs.

[0055] The first end of the second flexible circuit board 132 is connected to the cell circuit board 11 via a third board-to-board connector, and the second end of the second flexible circuit board 132 is connected to the main board of the electronic device (not shown in the figure) via a fourth board-to-board connector. The second flexible circuit board 132 extends along the length of the battery structure 1, and its extension direction is opposite to that of the first flexible circuit board 131. The second flexible circuit board 132 is located on one side of another cell module 12, along the thickness direction of the battery structure 1 (refer to...). Figure 1 As shown on the Z-axis, the orthographic projections of the first flexible circuit board 131 and the second flexible circuit board 132 partially overlap, and the second flexible circuit board 132 and the first flexible circuit board 131 are located on opposite sides of the cell circuit board 11, so that the first flexible circuit board 131 and the second flexible circuit board 132 are spaced apart and staggered to avoid mutual interference. Furthermore, the length of the second flexible circuit board 132 is less than the length of the first flexible circuit board 131 to avoid occupying too much space.

[0056] The first end of the third flexible circuit board 133 is electrically connected to the cell circuit board 11 via the fifth board-to-board connector, and the second end of the third flexible circuit board 133 is electrically connected to the main board of the electronic device (not shown in the figure) via the sixth board-to-board connector. The third flexible circuit board 133 extends along the length of the battery structure 1 (refer to...). Figure 1 Extending along the Y-axis (as shown), the second flexible circuit board 132 extends in the opposite direction to the first flexible circuit board 131. Along the thickness direction of the battery structure 1, the third flexible circuit board 133 is stacked on another cell module 12, making the first flexible circuit board 131, the second flexible circuit board 132, and the third flexible circuit board 133 independent of each other and without interference. The length of the third flexible circuit board 133 is greater than the length of the cell module 12 to ensure that the third flexible circuit board 133 is connected to the cell circuit board 11 and the main board of the electronic device, respectively.

[0057] The first flexible circuit board 131, the second flexible circuit board 132, and the third flexible circuit board 133 are simultaneously connected to the cell circuit board 11 to charge the cell module 12, realize high-current charging, reduce the impedance and heat generation of a single flexible circuit board, improve the overall performance of the battery structure 1, and improve the temperature rise problem in fast charging mode.

[0058] In this embodiment, as Figures 1-4 As shown, the battery structure 1 also includes a first heat sink 14, which is located between the two cell modules 12. The first heat sink 14 is configured to conduct heat from the cell circuit board 11 to the mid-frame assembly of the electronic device (not shown in the figure) to dissipate heat from the battery structure 1, thereby improving the overall heat dissipation effect of the battery structure 1 and enhancing the performance of the battery structure 1.

[0059] The first heat sink 14, for example, is a thermally conductive gel. This gel is injected between the two battery cell modules 12 to fill the gap, ensuring the flatness of one side of the battery structure 1 along its thickness direction. This prevents voids between the two battery cell modules 12 and improves the reliability and strength of their connection. Furthermore, the first heat sink 14 is in contact with the mid-frame assembly of the electronic device. It can conduct heat generated by the battery cell circuit board 11 to the mid-frame assembly. The mid-frame assembly has a high thermal conductivity, such as K≥160W / mK. The combination of the mid-frame assembly and the first heat sink 14 enables rapid heat dissipation, significantly improving the heat generation problem of the battery structure 1.

[0060] In one exemplary embodiment, such as Figures 1-5 As shown, the cell module 12 includes a cell body 121, a cell lead-out section 122, and a tab unit 123. The cell lead-out section 122 is formed on the first side of the cell body 121, i.e., the head of the cell body 121, so that the two cell modules 12 are positioned head-to-head to facilitate simultaneous connection with the cell circuit board 11. The interior of the cell body 121 may be filled with, for example, lithium-ion polymer to realize the function of the battery structure 1.

[0061] The tab unit 123 is disposed on the side of the cell lead-out section 122 away from the cell body 121 and is connected to the cell lead-out section 122. The tab unit 123 is led out from the cell lead-out section 122, and the cell lead-out section 122 is connected to the cell circuit board 11 through the tab unit 123 to achieve electrical conduction, so as to facilitate the conduction of the charging and discharging path.

[0062] Along the thickness direction of the battery structure 1, the first heat sink 14 and the cell circuit board 11 are respectively disposed on both sides of the cell lead-out section 122. The first heat sink 14 is connected to the cell lead-out section 122. The first heat sink 14 is used to fill one side of the two cell lead-out sections 122 to improve the flatness of the cell module 12.

[0063] In this embodiment, as Figure 1 , Figure 5 As shown, the electrode unit 123 includes a positive electrode tab 1231 and a negative electrode tab 1232. Along the width direction of the battery structure 1, the positive electrode tab 1231 and the negative electrode tab 1232 are spaced apart to avoid electrical interference caused by mutual contact. Both the positive electrode tab 1231 and the negative electrode tab 1232 are integral structures to ensure their continuity and integrity.

[0064] The positive electrode lug 1231 is made of aluminum, for example, to give it good conductivity, while the negative electrode lug 1232 is made of nickel, for example, to improve the reflux effect.

[0065] In this embodiment, as Figure 1 , Figure 4 , Figure 5 As shown, the positive electrode body 1231 includes a first positive electrode bending section 12311, a positive electrode connecting section 12312, a second positive electrode bending section 12313, and a positive electrode extension section 12314 connected in sequence. The first positive electrode bending section 12311 is fixedly connected to the cell lead-out section 122, and the positive electrode extension section 12314 is connected to the cell circuit board 11.

[0066] The first positive tab bending segment 12311 and the second positive tab bending segment 12313 both extend along the thickness direction of the battery structure 1, while the positive tab connecting segment 12312 and the positive tab extension segment 12314 both extend along the length direction of the battery structure 1. The cell lead-out segment 122, the positive tab connecting segment 12312, and the positive tab extension segment 12314 are stacked sequentially. The first positive tab bending segment 12311, the positive tab connecting segment 12312, the second positive tab bending segment 12313, and the positive tab extension segment 12314 together constitute the bent positive tab body 1231, which has sufficient length to connect with the cell circuit board 11.

[0067] In one example, such as Figure 4 , Figure 5 As shown, the battery cell module 12 also includes a second heat sink 124, which is sandwiched between the battery cell lead-out section 122 and the positive electrode tab connection section 12312, allowing the battery cell lead-out section 122 to be stacked and connected via the second heat sink 124 and the positive electrode tab connection section 12312. The second heat sink 124 supports the positive electrode tab connection section 12312, preventing it from collapsing or bending excessively, preventing the positive electrode tab body 1231 from becoming stuck, and preventing damage to the positive electrode tab body 1231, thus ensuring the state of each layer during stacking. The second heat sink 124 can be, for example, thermally conductive foam, to fix the battery cell lead-out section 122 and the positive electrode tab connection section 12312, improving stability during connection. Furthermore, the second heat sink 124 and the positive electrode tab connection section 12312 form a surface-to-surface contact connection, which can conduct heat from the positive electrode tab body 1231 to its sides, i.e., distribute it evenly around the perimeter, further improving heat dissipation.

[0068] In another example, such as Figure 4 , Figure 5As shown, the battery structure 1 also includes a third heat sink 125. The third heat sink 125 can be disposed between the positive tab connection section 12312 and the positive tab extension section 12314. The positive tab extension section 12314 is connected to the positive tab connection section 12312 through the third heat sink 125, so as to provide support for the positive tab connection section 12312 and the positive tab extension section 12314 respectively, and improve the reliability of the connection, so as to avoid misalignment between the positive tab connection section 12312 and the positive tab extension section 12314, which would affect the connection effect and stability.

[0069] The positive electrode connecting section 12312 and the positive electrode extension section 12314 are respectively connected to the third heat sink 125 in surface-to-surface contact, so as to conduct the heat in the positive electrode body 1231 to its side, that is, to distribute it evenly to the surrounding area, thereby further improving the heat dissipation effect.

[0070] Of course, it is understandable that, in order to further improve the heat dissipation of the positive electrode tab 1231 and solve the problem of bending, the second heat sink 124 and the third heat sink 125 are not limited to being set separately, but can be set simultaneously to further solve the temperature rise problem of the positive electrode tab 1231, protect the positive electrode tab 1231, and avoid damage when bending.

[0071] In this embodiment, as Figures 4-6 As shown, the battery cell module 12 also includes a first protective member 126. The first protective member 126 is U-shaped, so that the first protective member 126 has a first open end 1261. The first protective member 126 covers the first side of the battery cell body 121 through the first open end 1261 to cover the battery cell lead-out section 122, the first positive electrode bent section 12311 and the positive electrode connection section 12312.

[0072] Of course, it should be noted that the first protective member 126 is not limited to the above-mentioned U-shape, but can also be S-shaped, so that the first protective member 126 has a first open end 1261 and a second open end 1262. The first protective member 126 is sleeved on the third heat sink 125 through the second open end 1262, and the second positive electrode tab bending section 12313 and the positive electrode tab extension section 12314 are attached to the corresponding side wall of the first protective member 126 to separate the positive electrode tab extension section 12314 and the positive electrode tab connection section 12312 to avoid short circuit.

[0073] Among them, the first protective component 126 is, for example, an insulating tape. When the positive electrode ear 1231 and the negative electrode ear 1232 are respectively soldered to the battery cell circuit board 11, the insulating tape can isolate the positive electrode ear 1231 and the negative electrode ear 1232, thus preventing short circuit problems between the positive electrode ear 1231 and the negative electrode ear 1232.

[0074] In this embodiment, as Figure 1 , Figure 4, Figure 5 The negative electrode ear body 1232 includes a first negative electrode ear bending section 12321, a negative electrode ear connecting section 12322, a second negative electrode ear bending section 12323, and a negative electrode ear extension section 12324 connected in sequence. The first negative electrode ear bending section 12321 is fixedly connected to the cell lead-out section 122, and the negative electrode ear extension section 12324 is connected to the cell circuit board 11.

[0075] The first negative electrode tab bending segment 12321 and the second negative electrode tab bending segment 12323 both extend along the thickness direction of the battery structure 1, while the negative electrode tab connecting segment 12322 and the negative electrode tab extension segment 12324 both extend along the length direction of the battery structure 1. The cell lead-out segment 122, the negative electrode tab connecting segment 12322, and the negative electrode tab extension segment 12324 are stacked sequentially. The first negative electrode tab bending segment 12321, the negative electrode tab connecting segment 12322, the second negative electrode tab bending segment 12323, and the negative electrode tab extension segment 12324 together constitute the bent negative electrode tab body 1232, which has sufficient length to connect with the cell circuit board 11.

[0076] In one example, such as Figure 4 , Figure 5 As shown, the second heat sink 124 is sandwiched between the cell lead-out section 122 and the negative electrode tab connection section 12322, so that the cell lead-out section 122 is stacked with the negative electrode tab connection section 12322 via the second heat sink 124. The second heat sink 124 is used to support the negative electrode tab connection section 12322, preventing the negative electrode tab connection section 12322 from collapsing or bending excessively, preventing the negative electrode tab body 1232 from becoming stuck, preventing damage to the negative electrode tab body 1232, and ensuring the state of each layer during stacking. The second heat sink 124 can be, for example, thermally conductive foam adhesive, to fix the cell lead-out section 122 and the negative electrode tab connection section 12322, improving the stability during connection. Furthermore, the second heat sink 124 and the negative electrode tab connection section 12322 form a surface-to-surface contact connection, which can conduct heat from the negative electrode tab body 1232 to its sides, i.e., distribute it evenly around the edges, further improving the heat dissipation effect.

[0077] In another example, such as Figure 4 , Figure 5 As shown, the third heat sink 125 can be sandwiched between the negative electrode tab connecting section 12322 and the negative electrode tab extension section 12324. The negative electrode tab extension section 12324 is connected to the negative electrode tab connecting section 12322 through the third heat sink 125, so as to provide support for the negative electrode tab connecting section 12322 and the negative electrode tab extension section 12324 respectively, and improve the reliability of the connection, so as to avoid misalignment between the negative electrode tab connecting section 12322 and the negative electrode tab extension section 12324, which would affect the connection effect and stability.

[0078] In another example, such as Figure 4 , Figure 5 As shown, one end of the third heat sink 125 extends between the positive tab connection section 12312 and the positive tab extension section 12314, and the other end of the third heat sink 125 extends between the negative tab connection section 12322 and the negative tab extension section 12324, so that the positive tab body 1231 and the corresponding negative tab body 1232 in the two battery cell modules 12 share a third heat sink 125, which simplifies the overall component structure and quantity, facilitates layout optimization, and improves the stability of the connection of each component of the tab unit 123.

[0079] In this embodiment, as Figures 4-6 As shown, the battery cell module 12 also includes a second protective member 127. The second protective member 127 is U-shaped, so that the second protective member 127 has a first opening 1271. The second protective member 127 covers the first side of the battery cell body 121 through the first opening 1271 to cover the battery cell lead-out section 122, the first negative electrode tab bending section 12321 and the negative electrode tab connection section 12322.

[0080] Of course, it should be noted that the second protective member 127 is not limited to the above-mentioned U-shape, but can also be S-shaped, so that the second protective member 127 has a first opening 1271 and a second opening 1272. The second protective member 127 is fitted onto the third heat sink 125 through the second opening 1272. The bent section 12323 and the extended section 12324 of the second negative electrode tab are attached to the corresponding sidewall of the second protective member 127 to separate the negative electrode tab connecting section 12322 and the negative electrode tab extended section 12324, thus preventing short circuits.

[0081] Among them, the second protective component 127 is, for example, insulating tape. When the positive electrode ear 1231 and the negative electrode ear 1232 are respectively soldered to the battery cell circuit board 11, the insulating tape can isolate the positive electrode ear 1231 and the negative electrode ear 1232, so as to avoid short circuit between the positive electrode ear 1231 and the negative electrode ear 1232.

[0082] It is understood that, in order to improve the overall stability of the protective components, the first protective component 126 and the second protective component 127 may be fixedly connected and be integrally formed. Specifically, the first opening end 1261 and the first opening portion 1271 are positioned back-to-back, while the second opening end 1262 and the second opening portion 1272 are positioned opposite each other and connected.

[0083] In one exemplary embodiment, such as Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8As shown, the battery cell circuit board 11 includes a circuit board body 111, a positive electrode connection portion 112 disposed on the circuit board body 111, and a negative electrode connection portion 113 disposed on the circuit board body 111.

[0084] One of the battery cell modules 12 has its positive electrode tab 1231 connected to the positive electrode connection portion 112, and the other battery cell module 12 has its negative electrode tab 1232 connected to the negative electrode connection portion 113. The positive electrode connection portion 112 is a positive electrode pad, to which the positive electrode tab 1231 is soldered; the negative electrode connection portion 113 is a negative electrode pad, to which the negative electrode tab 1232 is soldered, thus enabling safe charging and discharging.

[0085] In this embodiment, as Figure 1 , Figure 5 , Figure 7 , Figure 8 As shown, the battery cell circuit board 11 also includes a connecting portion 114, which is disposed on the circuit board body 111. The connecting portion 114 is, for example, a busbar, through which the negative electrode tab 1232 of one battery cell module 12 and the positive electrode tab 1231 of another battery cell module 12 are respectively connected to the connecting portion 114 to form a series circuit. The connecting portion 114 is soldered to the circuit board body 111 to facilitate electrical connection. The connecting portion 114 is, for example, made of copper-plated nickel low-resistivity material, which generates even less heat, further solving the temperature rise problem of the battery structure 1.

[0086] In this embodiment, as Figure 1 , Figure 4 , Figure 7 , Figure 8 As shown, the battery structure 1 also includes two phase change heat sinks 15. Along the length of the battery structure 1, the two phase change heat sinks 15 are respectively disposed on both sides of the circuit board body 111. The circuit board body 111 is connected to the corresponding cell module 12 through the phase change heat sinks 15. The phase change heat sinks 15 are made of phase change material (PCM) to absorb a large amount of latent heat, absorbing and storing the heat in the area of ​​the cell circuit board 11, thus reducing the temperature of the cell circuit board 11 area. Furthermore, the phase change heat sinks 15 can be made into phase change pads to protect the heads of the cell circuit board 11 and the cell module 12, preventing safety hazards caused by external impacts.

[0087] In this embodiment, as Figure 1 , Figure 5 , Figure 7 , Figure 8As shown, the battery structure 1 also includes a temperature detection element 16, which is disposed on the circuit board body 111 and connected to the cell circuit board 11. The temperature detection element 16 is connected to the leads of the cell circuit board 11 to monitor the temperature of the cell circuit board 11, thereby monitoring the temperature rise of the cell circuit board 11 and preventing excessively high or rapid temperature rises that could cause safety hazards.

[0088] In this embodiment, as Figure 1 , Figure 4 , Figure 9 As shown, the battery structure 1 also includes an adhesive tape portion 17, which is disposed between the two cell modules 12 to wrap the first heat sink 14 and the cell circuit board 11.

[0089] The adhesive tape portion 17 has an adhesive tape opening end 171 through which at least one flexible circuit board 13 extends. The adhesive tape portion 17 is used to further restrict the movement of the cell circuit board 11 and the first heat sink 14, improve the stability of the head of the battery structure 1, prevent misalignment or detachment of components, and also improve the integrity and aesthetics of the appearance.

[0090] The battery structure proposed in this disclosure achieves a high-current super-fast charging mode by simultaneously charging the battery cell module through multiple flexible circuit boards, thereby improving charging efficiency and meeting the power needs of users who want to charge and play simultaneously. Furthermore, the use of multiple flexible circuit boards reduces the impedance of individual circuit boards and fundamentally solves the heat generation problem, effectively reducing the heat generated by the battery itself, improving the overall performance of the battery structure, and mitigating the temperature rise issue in fast charging mode.

[0091] By utilizing a first heat sink, a second heat sink, a third heat sink, and a phase change heat sink, multiple combinations are achieved to realize layered cooling, further reducing the temperature of the battery cell circuit board area.

[0092] This disclosure also proposes an electronic device comprising a motherboard, a mid-frame assembly, and a battery structure as described in any of the embodiments above, the battery structure being electrically connected to the motherboard. The battery structure dissipates heat from its cell circuit board to the mid-frame assembly via a first heat sink, thus cooling the battery structure. The mid-frame assembly has a high thermal conductivity, enabling rapid heat dissipation and meeting the heat dissipation requirements.

[0093] The battery structure in this disclosure is electrically connected to the motherboard via a connector. While fulfilling the functions of each part, the battery structure is equipped with multiple flexible circuit boards to charge the battery structure, thereby improving charging efficiency, reducing the heat generated by the battery structure itself, optimizing the temperature rise of the battery structure, and optimizing the overall performance of the electronic device.

[0094] Furthermore, the two battery cell modules increase the total capacity of the battery structure, improving the battery life of electronic devices and meeting user needs. Multiple flexible circuit boards enable fast charging of the battery structure, meeting users' needs for charging while playing games, and making electronic devices more competitive in the market.

[0095] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0096] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A battery structure, characterized by, The battery structure includes a cell circuit board and two cell modules. Along the width direction of the cell circuit board, the two cell modules are symmetrically arranged on both sides of the cell circuit board and connected to the cell circuit board. The battery structure also includes multiple flexible circuit boards, each of which has a first end connected to the cell circuit board and a second end connected to the motherboard of the electronic device. The battery structure further includes a first heat sink, which is located between the two cell modules and is configured to conduct heat from the cell circuit board to the mid-frame assembly of the electronic device. The battery cell module includes a battery cell body, a battery cell lead-out section, and a tab unit. The battery cell lead-out section is formed on a first side of the battery cell body, and the tab unit is disposed on the side of the battery cell lead-out section away from the battery cell body and is connected to the battery cell lead-out section. Along the thickness direction of the battery structure, the first heat sink and the cell circuit board are respectively disposed on both sides of the cell lead-out section. The first heat sink is connected to the cell lead-out section, and the cell circuit board is connected to the cell lead-out section through the tab unit. The electrode unit includes a positive electrode body and a negative electrode body, and the positive electrode body and the negative electrode body are arranged at intervals along the width direction of the battery structure; The positive electrode body includes a first positive electrode bending section, a positive electrode connecting section, a second positive electrode bending section, and a positive electrode extension section connected in sequence. The first positive electrode bending section is fixedly connected to the cell lead-out section, and the positive electrode extension section is connected to the cell circuit board. The first positive tab bending section and the second positive tab bending section both extend along the thickness direction of the battery structure; the positive tab connecting section and the positive tab extension section both extend along the length direction of the battery structure; and the cell lead-out section, the positive tab connecting section and the positive tab extension section are stacked sequentially.

2. The battery structure of claim 1, wherein The battery structure includes a first flexible circuit board, a second flexible circuit board, and a third flexible circuit board; The second flexible circuit board is connected to the battery cell circuit board and the main board of the electronic device, respectively; the third flexible circuit board is connected to the battery cell circuit board and the main board of the electronic device, respectively. Wherein, the first end of the first flexible circuit board is connected to the battery cell circuit board, the second end of the first flexible circuit board is connected to the motherboard of the electronic device, and the second end of the first flexible circuit board is set as the discharge port of the battery structure.

3. The battery structure of claim 1, wherein The battery cell module further includes a first protective component, which has a first open end. The first protective component covers the first side of the battery cell body through the first open end to cover the battery cell lead-out section, the first positive electrode bending section, and the positive electrode connection section.

4. The battery structure according to claim 1, characterized in that, The negative electrode body includes a first negative electrode bent section, a negative electrode connecting section, a second negative electrode bent section, and a negative electrode extension section connected in sequence. The first negative electrode bent section is fixedly connected to the cell lead-out section, and the negative electrode extension section is connected to the cell circuit board. The first negative electrode tab bending section and the second negative electrode tab bending section both extend along the thickness direction of the battery structure; the negative electrode tab connecting section and the negative electrode tab extension section both extend along the length direction of the battery structure; and the cell lead-out section, the negative electrode tab connecting section and the negative electrode tab extension section are stacked sequentially.

5. The battery structure according to claim 4, characterized in that, The battery cell module further includes a second protective component, which has a first opening. The second protective component covers the first side of the battery cell body through the first opening to cover the battery cell lead-out section, the first negative electrode tab bending section, and the negative electrode tab connection section.

6. The battery structure according to claim 4, characterized in that, The battery cell module further includes a second heat sink, which is sandwiched between the battery cell lead-out section and the positive electrode tab connection section, such that the battery cell lead-out section is connected in a stacked manner through the second heat sink and the positive electrode tab connection section; and / or The second heat sink is sandwiched between the cell lead-out section and the negative electrode connection section, so that the cell lead-out section is stacked through the second heat sink and the negative electrode connection section.

7. The battery structure according to claim 4, characterized in that, The battery structure further includes a third heat sink, which is sandwiched between the positive electrode tab connection section and the positive electrode tab extension section, such that the positive electrode tab extension section is stacked and connected to the positive electrode tab connection section through the third heat sink; and / or The third heat sink is sandwiched between the negative electrode tab connecting section and the negative electrode tab extension section, so that the negative electrode tab extension section is stacked and connected to the negative electrode tab connecting section through the third heat sink.

8. The battery structure according to claim 1, characterized in that, The battery cell circuit board includes a circuit board body, a positive electrode connection portion disposed on the circuit board body, and a negative electrode connection portion disposed on the circuit board body; One of the battery cell modules has its positive electrode tab connected to the positive electrode connection part, and the other battery cell module has its negative electrode tab connected to the negative electrode connection part.

9. The battery structure according to claim 8, characterized in that, The battery cell circuit board also includes an adapter connection part, which is disposed on the circuit board body; The negative electrode of one of the battery cell modules and the positive electrode of the other battery cell module are respectively connected to the adapter connection part.

10. The battery structure according to claim 8, characterized in that, The battery structure also includes two phase change heat sinks. Along the length of the battery structure, the two phase change heat sinks are respectively disposed on both sides of the circuit board body. The circuit board body is connected to the corresponding cell module through the phase change heat sinks.

11. The battery structure according to claim 8, characterized in that, The battery structure also includes a temperature detection device, which is disposed on the main body of the circuit board and connected to the cell circuit board.

12. The battery structure according to claim 1, characterized in that, The battery structure also includes an adhesive tape portion, which is disposed between the two battery cell modules to wrap the first heat sink and the battery cell circuit board; The adhesive tape portion has an adhesive tape opening end, and at least one of the flexible circuit boards extends out of the adhesive tape portion through the adhesive tape opening end.

13. An electronic device, characterized in that, The electronic device includes a motherboard, a mid-frame assembly, and a battery structure as described in any one of claims 1-12, wherein the battery structure is connected to the motherboard; The battery structure conducts heat from the cell circuit board to the mid-frame assembly through the first heat dissipation component of the battery structure.

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