CN212967805U - Novel electric core protection structure and electronic equipment with same - Google Patents

Abstract

The utility model provides a novel battery cell protection structure and an electronic device with the same, which comprises a battery cell, a first main board group and a second main board group, wherein the first main board group and the second main board group are electrically connected with the battery cell and are respectively arranged at two sides of the battery cell; the first main board group comprises a plurality of first main boards which are electrically connected with each other, the plurality of first main boards are sequentially overlapped on one side of the battery core, and the size of the plurality of first main boards is sequentially reduced along the direction away from the battery core; the second main board group comprises a plurality of second main boards which are electrically connected with each other, the plurality of second main boards are sequentially overlapped at the other side of the battery cell, where the first main board group is arranged, and the size of the plurality of second main boards is sequentially reduced along the direction away from the battery cell, so that the purpose of heat dissipation is achieved; every be equipped with on the first mainboard, the second mainboard the electricity core protection component can also provide bigger extension space for the electricity core under the thermal prerequisite that reduces current electricity core protection component.

Description

Novel electric core protection structure and electronic equipment with same

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a novel electric core protection architecture and be equipped with this novel electric core protection architecture's electronic equipment.

Background

With the continuous development of communication technology, terminals such as mobile phones have become indispensable electronic devices for users. The battery protection board is an important component in the terminal, and is an integrated circuit board for preventing overcharge, overdischarge and short circuit of a battery (especially a lithium battery). Specifically, when the electrode voltage of the battery during the charging process is higher than a preset upper limit value, or when the electrode voltage of the battery during the discharging process is lower than a preset lower limit value, or when the electrode of the battery is short-circuited during the discharging process, the circuit protection board may disconnect the electrical connection of the battery and the electrode connection socket. Because the functions of the electronic equipment are increasingly increased and the consumption of the battery capacity of the electronic equipment is increased, the standby time of the electronic equipment is taken as an important standard for selecting products by users, so that the batteries can be continuously supplied for a long time to meet the requirements of normal use and users, and product manufacturers increase the batteries and use large-capacity batteries to meet the requirements of the users. However, the increase in the volume of the battery is in contradiction with the trend of light and thin products,

at present, the battery protection board is independent of the mainboard of the electronic equipment, the battery protection board is connected between the battery core and the mainboard, and the current output by the battery core is input into the mainboard of the electronic equipment through the battery protection board. Because the battery protection shield is connected between electric core and mainboard to the battery protection shield is because it is serious to generate heat, can guarantee the heat dissipation through increasing the area usually, and the protection shield of large tracts of land has taken up electronic equipment's inner space, has hindered the increase of the capacity of electric core from this, and the duration of increasing electronic equipment is violated mutually.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model aims to provide a can also do under the thermal prerequisite that reduces current electric core protection board subassembly electric core provides the novel electric core protection architecture in bigger extension space and is equipped with this novel electric core protection architecture's electronic equipment.

A novel battery cell protection structure comprises a battery cell, a first main plate group and a second main plate group, wherein the first main plate group and the second main plate group are electrically connected with the battery cell and are respectively arranged on two sides of the battery cell; the first main plate group and the second main plate group are provided with battery cell protection components, the battery cell is provided with a positive electrode lug and a negative electrode lug, and the battery cell protection components on the first main plate group and the second main plate group are respectively and electrically connected with the battery cell through the positive electrode lug and the negative electrode lug; the first main board group comprises a plurality of first main boards which are electrically connected with each other, the plurality of first main boards are sequentially overlapped on one side of the battery core, and the size of the plurality of first main boards is sequentially reduced along the direction away from the battery core; the second main board group comprises a plurality of second main boards which are electrically connected with each other, the plurality of second main boards are sequentially overlapped at the other side of the battery cell, where the first main board group is arranged, and the size of the plurality of second main boards is sequentially reduced along the direction away from the battery cell; every be equipped with on the first mainboard, the second mainboard the electricity core protection subassembly, electricity core protection subassembly includes temperature protection module, switch protection module, control IC and sampling resistor.

Preferably, the first main board group includes at least three layers of the first main board, and the second main board group includes at least three layers of the second main board.

Preferably, the battery cell comprises two first mounting surfaces and four second mounting surfaces, and the size of the first mounting surface is larger than that of the second mounting surface; the first main board combination and the second main board combination are respectively arranged on the two first mounting surfaces.

Preferably, the first mounting surface comprises opposing first and second side edges; one side of each of the first main boards is overlapped with the first side edge, and the distance from the other side of each of the first main boards to the first side edge is gradually reduced along the direction far away from the battery cell; several one side of second mainboard with the coincidence of second side edge, opposite side are apart from the distance of second side edge decreases progressively in proper order.

Preferably, the temperature protection module is a PTC current device or a TCO current device, one end of the temperature protection module is electrically connected to the battery cell, and the other end of the temperature protection module is electrically connected to the switch protection module.

Preferably, the switch protection module is an MOS switch module, and the control IC is electrically connected to the MOS switch module.

Preferably, the first motherboard and the second motherboard are further provided with an NTC temperature protection module and a motherboard circuit, and the NTC temperature protection module is electrically connected with the motherboard circuit and the battery cell protection assembly respectively.

Preferably, the first main board and the second main board are provided with conducting layers, and the positive electrode lug and the negative electrode lug are respectively arranged and electrically connected with the conducting layers, so that the first main board and the second main board are electrically connected.

Preferably, a first nickel sheet and a second nickel sheet are arranged on the conducting layer, the positive electrode tab is electrically connected with the first nickel sheet, and the negative electrode tab is electrically connected with the second nickel sheet.

An electronic device is provided with the novel battery cell protection structure.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

1. by integrating the battery cell protection assembly on the mainboard, the purpose of protecting the battery cell can be realized, and more space can be saved compared with the existing independent battery cell protection assembly, and the saved space can be used for increasing the capacity of the battery cell and improving the cruising ability of the electronic equipment;

2. the mainboard is designed into a multilayer structure, and the sizes of the first mainboards and the second mainboards are sequentially reduced from the position close to the battery cell to the position far away from the battery cell, so that heat dissipation structures taking the first mainboards and the second mainboards as main bodies can be formed at two ends of the battery cell, and the serious heating degree of the first mainboards and the second mainboards caused by the integration of the battery cell protection structure is reduced;

3. the NTC temperature protection module is arranged to respectively protect the mainboard circuit and the cell protection assembly on the first mainboard and the second mainboard;

4. the first main board group and the second main board group are arranged on the first installation surface with the larger area of the battery core, so that a better heat dissipation effect can be realized.

Drawings

Fig. 1 is a schematic diagram of a logic structure according to a preferred embodiment of the present invention;

fig. 2 is the utility model provides a preferred embodiment the first mainboard the second mainboard and the arrangement structure between the electric core.

Reference numerals: 1-battery core, 2-first main plate group, 3-second main plate group, 4-anode tab and 5-cathode tab.

Detailed Description

The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.

The existing battery cell protection structure is generally a protection board integrated with a protection circuit, and the protection board is connected with the battery cell 1, so that the protection of the situations of overcharge, short circuit and the like of the battery cell 1 is realized. The utility model provides a pair of novel electricity core protection architecture, see figure 1-2, combine protection shield and mainboard, make the mainboard undertake the task of protection electricity core 1. Specifically, including electric core, first mainboard group 2, second mainboard group 3, the both sides of electric core 1 are located respectively to first mainboard group 2 and second mainboard group 3, are connected with electric core 1 electricity respectively, are equipped with electric core protection component on first mainboard group 2, the second mainboard group 3, undertake the protection to electric core 1 jointly. Thus, not only is the requirement for protecting the battery cell 1 satisfied, but space is also left for increasing the capacity of the battery cell 1.

A positive electrode tab 4 and a negative electrode tab 5 are arranged on the battery cell 1, and the battery cell protection assembly on the first main plate group 2 is electrically connected with the battery cell through the positive electrode tab 4 and the negative electrode tab 5, so that a protection circuit in the battery cell protection assembly on the first main plate group 2 is connected with the battery cell 1; the cell protection assembly on the second main board group 3 is electrically connected with the cell 1 through the positive electrode tab 4 and the negative electrode tab 5, so that a protection circuit in the cell protection assembly on the second main board group 3 is connected with the cell 1.

Since the cell protection component provided with the protection circuit generates heat seriously and is integrated on the first main plate group 2 and the second main plate group 3 to cause serious heat generation of the first main plate group 2 and the second main plate group 3, the heat dissipation capacity of the first main plate group 2 and the second main plate group 3 needs to be increased. Specifically, first mainboard group 2 includes several first mainboards of electricity connection each other, and several first mainboards superpose in proper order in one side of electric core 1, and the first mainboard of a plurality of has increased the heat radiating area of first mainboard, improves the radiating effect, and the size of several first mainboards reduces in proper order along the direction of keeping away from electric core 1, forms the trapezoidal heat radiation structure who uses first mainboard as the main part, has increased the area of contact of first mainboard group 2 with the air, further improves the radiating effect. Similarly, second mainboard group 3 includes several second mainboards of electricity connection each other, and several second mainboards superpose in proper order at the opposite side that electric core 1 was equipped with first mainboard group 2, and the size of several second mainboards reduces in proper order along the direction of keeping away from electric core 1. Through set up first main board group 2 and the second main board group 3 dispersion in the both sides of electric core 1, the space of electric core both sides can rationally be utilized.

In this embodiment, the first motherboard group 2 includes three first motherboards, the first motherboard 201 of the first layer is disposed near the battery cell 1, the first motherboard 202 of the second layer is disposed near the first motherboard 201 of the first layer, the first motherboard 203 of the third layer is disposed near the first motherboard 202 of the second layer, and the area of the first motherboard 201 of the first layer is larger than that of the first motherboard 202 of the second layer and is larger than that of the first motherboard 203 of the third layer. The arrangement of the first main boards in the three layers increases the self volume of the first main board group 2 and also increases the contact area between the first main boards and air, so that the heat dissipation effect is accelerated.

Similarly, the second motherboard group 3 includes three layers of second motherboards, the first layer of second motherboard 301 is located and is set by the electric core 1, the second layer of second motherboard 302 is located and is set by the first layer of second motherboard 301, the third layer of second motherboard 303 is located and is set by the second layer of second motherboard 302, and the area of the first layer of second motherboard 301 is greater than that of the second layer of second motherboard 302 and is greater than that of the third layer of second motherboard 303.

In other embodiments, the number of layers of the first motherboard and the number of layers of the second motherboard correspond to the number of actually required motherboards, and the first motherboard may be a large board or a small board, and the second motherboard may be a large board or a small board.

Specifically, the battery cell 1 comprises two first installation surfaces and four second installation surfaces, the size of the first installation surfaces is larger than that of the second installation surfaces, the first main plate group 2 and the second main plate group 3 are respectively arranged on the two first installation surfaces, and the side surfaces of the battery cell 1 are reasonably combined with the main plates.

In other embodiments, considering a general structure of the electronic device, such as a flat structure of a mobile phone or a flat panel, the two first mounting surfaces of the battery cell 1 generally cannot accommodate other components, so as to prevent the thickness of the mobile phone or the flat panel from increasing, and at this time, the first main plate group 2 and the second main plate group 3 may also be disposed on the four second mounting surfaces with smaller areas.

In this embodiment, the first mounting surface includes a first side edge and a second side edge opposite to each other; one side of three first mainboard and the first side coincidence setting of the first installation face of electric core 1, then the distance of opposite side apart from first side is steadilyd decrease in proper order along the direction of keeping away from electric core 1, and three first mainboards all have partial structure to expose, realize the heat dissipation. Similarly, three second mainboards are arranged on the other first installation surface, one side of each second mainboard is overlapped with the second side edge, and the distance from the other side to the second side edge decreases progressively in sequence along the direction of being far away from the battery cell 1, so that the three second mainboards are partially exposed to realize heat dissipation.

And each of the first main board and the second main board is provided with a battery cell protection assembly, and the battery cell protection assembly comprises a temperature protection module, a switch protection module, a control IC (integrated circuit) and a sampling resistor. The temperature protection module can select a PTC current transformer or a TCO current transformer, one end of the temperature protection module is electrically connected with the electric core 1, and the other end of the temperature protection module is electrically connected with the switch protection module and is used for monitoring the voltage of the electric core 1 and the current of a charge-discharge loop, and immediately controlling the on-off of the current loop to prevent the high-temperature discharge and unsafe large current of the electric core 1; and the battery core 1 is prevented from being damaged badly in a high-temperature environment. The switch protection module is an MOS switch module, and an MOS switch is arranged in the switch protection module. The control IC is electrically connected with the MOS switch module, and the MOS switch is controlled to be conducted under the normal working condition, so that the battery cell 1 is communicated with the mainboard circuit; and when the voltage or the loop current of the battery cell 1 exceeds a specified value, the control IC immediately controls the MOS switch to be turned off, so that the safety of the battery cell 1 is protected.

Preferably, the first motherboard and the second motherboard are further provided with an NTC temperature protection module and a motherboard circuit, the motherboard circuit is an original control circuit on the motherboard, usually a PCB, and the NTC temperature protection module is capable of controlling to reduce the resistance value when the ambient temperature rises, so that the electronic device or the charging device can timely react and control the internal interruption to stop charging and discharging. The NTC temperature protection module is respectively electrically connected with the mainboard circuit and the battery cell protection assembly, and simultaneously monitors and protects the protection circuit in the mainboard circuit and the battery cell protection assembly.

Preferably, the first main board and the second main board are provided with conductive layers, the positive electrode tab 4 and the negative electrode tab 5 are respectively arranged and electrically connected with the conductive layers, the conductive layers are further provided with a first nickel sheet and a second nickel sheet, the positive electrode tab 4 is electrically connected with the first nickel sheet, and the negative electrode tab 5 is electrically connected with the second nickel sheet, so that the electrical core 1 is electrically connected with the first main board and the second main board.

An electronic device is provided with the novel battery cell protection structure, and it can be understood that the novel battery cell protection structure of any one of the embodiments can be applied to the electronic device according to actual needs.

The electronic device may be implemented in various forms. For example, the terminal described in the present invention may include electronic devices such as a mobile phone, a smart phone, a notebook computer, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and fixed terminals such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is an electronic device. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly for moving purposes.

It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims (10)

1. A novel battery cell protection structure is characterized by comprising a battery cell, a first main plate group and a second main plate group, wherein the first main plate group and the second main plate group are electrically connected with the battery cell and are respectively arranged on two sides of the battery cell;

the first main plate group and the second main plate group are provided with battery cell protection components, the battery cell is provided with a positive electrode lug and a negative electrode lug, and the battery cell protection components on the first main plate group and the second main plate group are respectively and electrically connected with the battery cell through the positive electrode lug and the negative electrode lug;

the first main board group comprises a plurality of first main boards which are electrically connected with each other, the plurality of first main boards are sequentially overlapped on one side of the battery core, and the size of the plurality of first main boards is sequentially reduced along the direction away from the battery core; the second main board group comprises a plurality of second main boards which are electrically connected with each other, the plurality of second main boards are sequentially overlapped at the other side of the battery cell, where the first main board group is arranged, and the size of the plurality of second main boards is sequentially reduced along the direction away from the battery cell;

every be equipped with on the first mainboard, the second mainboard the electricity core protection subassembly, electricity core protection subassembly includes temperature protection module, switch protection module, control IC and sampling resistor.

2. The novel cell protection structure of claim 1, wherein the first main board group comprises at least three layers of the first main board, and the second main board group comprises at least three layers of the second main board.

3. The novel cell protection structure of claim 2, wherein the cell comprises two first mounting surfaces and four second mounting surfaces, and the size of the first mounting surfaces is larger than that of the second mounting surfaces; the first main board combination and the second main board combination are respectively arranged on the two first mounting surfaces.

4. The novel cell protection structure of claim 3, wherein the first mounting surface comprises a first side edge and a second side edge that are opposite to each other; one side of each of the first main boards is overlapped with the first side edge, and the distance from the other side of each of the first main boards to the first side edge is gradually reduced along the direction far away from the battery cell; several one side of second mainboard with the coincidence of second side edge, opposite side are apart from the distance of second side edge decreases progressively in proper order.

5. The novel battery cell protection structure of claim 1, wherein the temperature protection module is a PTC current device or a TCO current device, and one end of the temperature protection module is electrically connected to the battery cell, and the other end of the temperature protection module is electrically connected to the switch protection module.

6. The novel battery cell protection structure of claim 1, wherein the switch protection module is an MOS switch module, and the control IC is electrically connected to the MOS switch module.

7. The novel battery cell protection structure of claim 1, wherein an NTC temperature protection module and a motherboard circuit are further disposed on the first motherboard and the second motherboard, and the NTC temperature protection module is electrically connected to the motherboard circuit and the battery cell protection assembly, respectively.

8. The novel battery cell protection structure of claim 1, wherein a conductive layer is disposed on the first main board and the second main board, and the positive electrode tab and the negative electrode tab are electrically connected to the conductive layer, so as to be electrically connected to the first main board and the second main board.

9. The novel battery cell protection structure of claim 8, wherein a first nickel plate and a second nickel plate are disposed on the conductive layer, the positive electrode tab is electrically connected to the first nickel plate, and the negative electrode tab is electrically connected to the second nickel plate.

10. An electronic device, characterized in that, there is provided the novel cell protection structure of any of the above claims 1-9.

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