CN212434791U - Battery pack and terminal device - Google Patents

Abstract

The present disclosure relates to a battery pack and a terminal device. The battery component comprises a plurality of battery cells, wherein the connecting ends of every two battery cells are arranged oppositely; and the protection board is arranged between the connecting ends of the plurality of battery cores and is electrically connected with the connecting ends of the battery cores. The battery pack can improve the space utilization rate of the battery, thereby providing possibility for further improving the capacity of the battery pack.

Description

Battery pack and terminal device

Technical Field

The present disclosure relates to the field of battery structure technology, and in particular, to a battery pack and a terminal device.

Background

With the advent of the 5G era, the use scenes of electronic devices are getting larger and larger, and the coefficients are used more frequently. In order to meet the needs of users and to increase the standby time of electronic devices, batteries with larger capacities need to be equipped.

In electronic equipment, a dual-battery cell is often used for charging and discharging, and the battery capacity of the dual-battery cell is increased compared with that of a traditional battery. As the capacity of batteries increases, fast charging techniques capable of providing high power charging are also becoming mature. In the correlation technique, often adopt the arrangement mode that two electric cores set up side by side, the battery protection shield occupies solitary space, has leaded to the waste in space, is unfavorable for the frivolousization of product.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a battery pack and a terminal device.

According to a first aspect of the embodiments of the present disclosure, a battery assembly is provided, which includes a plurality of battery cells, wherein connection ends of two battery cells are disposed opposite to each other; and the protection board is arranged between the connecting ends of the plurality of battery cells and is electrically connected with the connecting ends of the battery cells.

In one embodiment, the connection end of the battery cell is provided with a tab; the tab is electrically connected with the protection plate.

In one embodiment, the tab is electrically connected to the protection plate by welding.

In one embodiment, the battery assembly further comprises: the temperature sensing devices are respectively arranged at the connecting ends of the battery cells and are electrically connected with the first ends of the protection plates.

In an embodiment, a second end of the protection board is configured to be electrically connected to a main board, wherein the second end is the other end of the protection board opposite to the first end.

In an embodiment, the second end of the protection board is provided with a connection line, and the connection line is electrically connected with the main board for charging and discharging.

In an embodiment, the connection ends of two electric cores are symmetrically arranged relative to the protection plate.

In an embodiment, a plurality of the battery cells are arranged in series.

In an embodiment, the number of the battery cells is two.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal device including the battery assembly according to any one of the preceding claims.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: this is disclosed through setting up two liang of opposite of link with a plurality of electric cores of battery pack to set up the protection shield between the link of a plurality of electric cores, can improve the space utilization of battery, thereby provide probably for further improving battery pack capacity.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a battery pack of the related art.

Fig. 2 is a schematic diagram illustrating a structure of a battery assembly according to an exemplary embodiment.

Fig. 3 is a schematic structural view illustrating a battery pack according to another exemplary embodiment.

Fig. 4 is a schematic structural view illustrating a battery pack according to still another exemplary embodiment.

Detailed Description

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.

With the increasing use scenes of terminal devices, users have higher requirements on the charging speed and the standby time of the terminal devices, and in order to meet the requirements of the users, more and more terminal device manufacturers start to provide batteries with larger capacity, such as dual-battery cells. The double-cell battery is large in capacity, can be suitable for a quick charging technology, and can accelerate the charging speed while the standby time of the electronic equipment is prolonged.

In the double-cell battery, each cell is also required to be connected with a protection board, and the protection board is provided with some protection circuits, such as an overcharge protection circuit, an overdischarge protection circuit, a charge-discharge temperature protection circuit, a short-circuit protection circuit and the like, for protecting the cell. Two electric cores set up side by side, and the protection shield setting is in one side of electric core, and the space that occupies is great. Also, in some technologies, a support frame is required to be provided for placing the protection board, which results in a waste of battery space. Under the market environment that the terminal equipment is continuously pursued to be light and thin, the arrangement is not beneficial to the light and thin of the product, and the competitiveness of the product is reduced.

With the coming of the 5G era, the demand of users for terminal equipment is expected to increase, and the demand is expected to be higher and higher. The mode that will two electric cores set up side by side has caused the waste in battery space, can't realize the more effective utilization in battery space, promotes battery capacity, is difficult to further increase the capacity of battery promptly, and then can not improve terminal equipment's stand-by time.

Fig. 1 is a schematic structural view of a battery pack of the related art. As shown in fig. 1, the battery assembly may be a dual-cell battery including a third cell 11 and a fourth cell 12. The third cell 11 and the fourth cell 12 are arranged side by side and are located on the same side of the protective plate 20. The third cell 11 and the fourth cell 12 are electrically connected to the protective plate 20. The protection board 20 is electrically connected to the main board 30. The main board 30 is a main board of the terminal device, and various functional devices such as a charging management chip can be arranged on the main board 30, so as to manage the charging and discharging processes of the terminal device.

For the dual-battery cell, a high-power fast charging technology is generally adopted, and in the charging process, along with the continuous increase of the charging current, the temperature of the main board 30 and the protection board 20 may rise rapidly, so that the battery cell located on one side of the protection board 20 is subjected to heat radiation.

The resistance of the battery cell is related to the temperature of the battery cell, and in order to protect the battery cell, a temperature sensing device is usually further mounted on the battery cell, so that the charging and discharging process of the battery can be adjusted according to the temperature of the battery cell, for example, when the temperature is too high, the circuit can be disconnected to stop the charging and discharging process in order to protect the battery cell. Two electric cores are and set up in one side of protection shield 20 side by side, and when high-power quick charge, mainboard 30 and protection shield 20 heat radiation to electric core violently heaies up will lead to the temperature that temperature-sensing device sensed to surpass the temperature range of electric core safety work, probably triggers protection mechanism disconnection charge-discharge circuit. Therefore, the battery stops working under unnecessary conditions, interference is caused to normal operation of the terminal equipment, user experience is poor, and product competition is not facilitated.

In order to solve the above technical problem, the present disclosure provides a battery assembly that can increase the space utilization of a battery.

Fig. 2 is a schematic diagram illustrating a structure of a battery assembly according to an exemplary embodiment. As shown in fig. 2, the battery module of the present disclosure includes a plurality of battery cells 100, and connection ends of two battery cells 100 are disposed opposite to each other. The battery pack of the present disclosure further includes a protection plate 200, where the protection plate 200 is disposed between the connection ends of the plurality of battery cells and electrically connected to the connection ends of the battery cells 100. The exterior of the battery cell 100 generally needs to be encapsulated to protect the battery cell 100, and a connection line or other functional devices of the battery cell 100 may be disposed on one end surface of the battery cell 100, that is, a connection end.

In an embodiment of the present disclosure, the battery assembly may include two battery cells, for example, a first battery cell 101 and a second battery cell 102. The first connection end 111 of the first cell 101 and the second connection end 121 of the second cell 102 are arranged opposite to each other. The protection plate 200 of the present disclosure is disposed between the first connection end 111 and the second connection end 121, the first connection end 111 and the protection plate 200 are electrically connected, and the second connection end 121 and the protection plate 200 are electrically connected.

In the embodiment of the present disclosure, the first connection end 111 of the first battery cell 101 and the second connection end 121 of the second battery cell 102 are oppositely disposed, and the protection plate 200 may be disposed between the first connection end 111 of the first battery cell 101 and the second connection end 121 of the second battery cell 102. In the embodiment of the present disclosure, the battery may be a lithium ion battery, and the main constituent materials of the lithium ion battery cell 100 may include an electrolyte, a separator, a positive electrode material, a negative electrode material, and the like. The anode material of the lithium ion battery can be lithium cobaltate, lithium manganate, lithium iron phosphate, ternary materials and the like. The negative electrode material of the lithium ion battery can be a carbon material, such as artificial graphite, natural graphite, mesocarbon microbeads, petroleum coke, carbon fibers, pyrolytic resin carbon and the like. The negative electrode material of the lithium ion battery can also be tin-based negative electrode material, lithium-containing transition metal nitride negative electrode material, alloy negative electrode material, nano-grade negative electrode material, nano-oxide material and other materials which can improve the charge and discharge amount and the charge and discharge frequency of the lithium battery. The connection end of the battery cell 100 of the battery assembly of the present disclosure is provided with two tabs, which are the positive electrode and the negative electrode of the battery cell 100 respectively. The tabs may be made of a metal conductor, such as nickel metal sheet. The battery cell 100 is electrically connected to the protection plate 200 via a tab. The tabs are electrically connected to the protection plate 200 by welding. The plurality of battery cells 100 of the present disclosure form a series circuit by electrical connection with the protection plate 200. The plurality of battery cells 100 are arranged in series, and the series connection structure can realize voltage division, namely, the plurality of battery cells 100 are connected in series to keep lower voltage, so that the condition of overpressure in the charging process of the battery assembly is avoided, and the battery pack is suitable for a high-power quick charging technology.

As shown in fig. 2, a first tab 110 is disposed on the first connection end 111 of the first battery cell 101, and the first tab 110 includes a positive electrode and a negative electrode of the first battery cell 101. A second tab 120 is disposed on a second connection end 121 of the second battery cell 102, and the second tab 120 includes a positive electrode and a negative electrode of the second battery cell 102. The first cell 101 is electrically connected to the protection plate 200 via a first tab 110, and the second cell 102 is electrically connected to the protection plate 200 via a second tab 120. That is, the first battery cell 101 and the second battery cell 102 form a series circuit through the protection plate 200, and the charging voltage can be divided, so that a high current can be used for quick charging in the charging process, and the charging point speed is increased. The first tab 110 and the second tab 120 are both nickel metal sheets.

The battery pack disclosed by the invention has the advantages that the connecting ends of every two battery cells 100 are oppositely arranged, so that a certain space is favorably provided for arranging the protection plate 200 between the connecting ends of every two battery cells 100, the space can be reasonably utilized without independently providing a space for the protection plate, or the support frame is specially arranged for placing the protection plate, and the maximum utilization of the space of the protection plate 200 is realized.

In the embodiment of the present disclosure, the connection ends of two electric cores 100 may also be symmetrically disposed with respect to the protection plate 200. As shown in fig. 2, the first connection end 111 of the first cell 101 and the second connection end 121 of the second cell 102 are symmetrically disposed with respect to the protection plate 200. That is, the vertical distance from the first connection end 111 of the first cell 101 to the protection plate 200 is equal to the vertical distance from the second connection end 121 of the second cell 102 to the protection plate 200. The connection ends of the two battery cells 100 are symmetrically arranged relative to the protection plate 200, and in the charging and discharging process, the heat radiation caused by the temperature rise of the protection plate 200 to the battery cells 100 on the two sides is equal. That is, the battery cells 100 symmetrically arranged at two sides of the protection plate 200 are subjected to the same heat radiation of the protection plate 200 in the long-time charging and discharging process, the aging degrees are similar, and the situation that the capacity is greatly attenuated after the circulation due to the different aging degrees of the battery cells in the battery assembly is avoided.

In the present disclosure, after two battery cells 100 composed of the same material undergo a long charge and discharge process, the performance of the battery cells 100 may be changed to different degrees due to aging of the battery cells 100, such as loss of use. That is, under the same condition, the resistances of the battery cells 100 with different aging degrees may be different, and further, the voltages corresponding to the battery cells 100 may be different under the same charging current. In the present disclosure, a battery assembly including a plurality of battery cells 100 is controlled by various internal monitoring circuits during charging and discharging, and the charging and discharging processes can be adjusted at any time according to the charging voltage of the battery assembly. When different electric cores 100 are different in aging degree due to different received heat radiation, the performance difference between a plurality of electric cores 100 on the series circuit is increased, and the internal monitoring circuit can only adjust the charging and discharging process of the whole battery assembly by using the same standard. For example, when a certain electric core is close to an overpressure and other electric cores have a boosting space, the internal monitoring circuit still judges that the battery assembly is about to overpressure, and then charging current is reduced for the battery assembly, so that the waste of the performances of other electric cores is caused, and the service life of the whole battery assembly is reduced.

In the embodiment of the present disclosure, since the connection ends of two battery cells 100 are symmetrically disposed with respect to the protection plate 200, in the charging and discharging processes, the heat radiation caused by the temperature rise of the protection plate 200 to the battery cells 100 on both sides is equal. That is, the battery cells 100 symmetrically disposed at two sides of the protection plate 200 are subjected to the same heat radiation from the protection plate 200 in the long-time charging and discharging process, and the aging degrees are similar. The performance difference of a plurality of battery cores after multiple charging and discharging cycles can be reduced, the cycle performance of the battery assembly is improved, the service life of the battery assembly is prolonged, and the quality of the battery assembly is improved.

It should be noted that the battery assembly of the present disclosure is not limited to include only two battery cells 100, and may include a greater number of battery cells 100 according to different purposes. Fig. 3 is a schematic structural view illustrating a battery pack according to another exemplary embodiment. As shown in fig. 3, the battery assembly of the present disclosure may further include six battery cells 100. The connecting ends of every two battery cells 100 are symmetrically arranged relative to the protection plate 200, three battery cells 100 are arranged on one side of the protection plate 200, and three battery cells 100 are also arranged on the other side of the protection plate 200. The analogy may also include eight battery cells 100, ten battery cells 100, and the like, and a plurality of battery cells 100 may be arranged in an array. The arrangement structure is compact, the space between the battery cells 100 is reasonably utilized to arrange the protection plate 200, the space utilization rate of the battery assembly is increased, and the battery cells 100 can be arranged in a certain space as much as possible. In the market competition that the standby time and the charging rate are continuously pursued, the battery assembly disclosed by the invention provides a method for increasing the capacity of the battery assembly on the basis of not increasing the setting cost through reasonable layout, and can avoid the inconsistent aging degree among different battery cells 100 and increase the competitiveness of the product.

The battery assembly of the present disclosure may further include a plurality of temperature sensing devices, and the plurality of temperature sensing devices are respectively disposed at the connection end of each of the battery cells 100. The temperature sensing device is used for sensing the temperature of the battery cell 100. The temperature sensing device is electrically connected to the first end of the protection plate 200, and may be electrically connected to the first end 201 of the protection plate 200 through a metal wire, for example. The temperature sensing device conducts the temperature of the battery cell 100 to the protection plate 200, and a processing chip may be disposed on the protection plate 200. The processing chip is capable of collecting and analyzing the received temperature data of the battery cells 100. It should be noted that, in actual manufacturing, the temperature sensing device is connected to the first end 201 of the protection plate 200 for reasonable layout and saving of metal wires, and the temperature sensing device is disposed on the connection end of the battery cell 100 near the first end of the protection plate 200. In some cases, the temperature sensing device may be mounted at a position of the connection end near the first end, and connected to a corresponding connection position on the protection plate by a wire.

The battery component can be used for terminal equipment, such as a mobile phone, a tablet computer, a notebook computer, a personal palm assistant and the like. The terminal device includes a main board 300 therein, and the main board 300 may be a circuit board. The main circuit of the terminal device is disposed on the main board 300, and the main body of the main board 300 may be a printed circuit board for carrying the main circuit of the main board 300. Various regulating circuits, control circuits, circuit management systems, and the like may be provided on the main board 300. The main board 300 is electrically connected to the protection plate 200 to manage and monitor the charge and discharge processes of the battery pack.

In the embodiment of the present disclosure, the other end of the protection plate 200 opposite to the first end 201 is a second end 202. That is, the second end 202 is the other end of the protection plate 200 far from the first end 201. The second end 202 of the protection plate 200 is electrically connected to the main board 300. For example, the protection plate 200 may be electrically connected to the main plate 300 through a connection line for charging and discharging. Generally, the second end 202 of the protection plate 200 is connected to the main plate 300, i.e., the main plate 300 is disposed near the second end 202 of the protection plate 200, in consideration of the reasonableness and stability of the layout of the connection lines. Due to the arrangement, the main board 300 and the temperature sensing device are respectively arranged to be close to the second end 202 and the first end 201 of the protective board 200, which are oppositely arranged, and a structure that the temperature sensing device is far away from the main board 300 is formed in the layout space of the battery assembly, so that the influence on the temperature sensing device when the main board 300 generates heat is avoided.

In the embodiment of the present disclosure, the second end 202 of the protection plate 200 is electrically connected with the main board 300 for charging and discharging. Since the plurality of circuits and the plurality of management chips on the main board 300 and the protection board 200 are simultaneously applied to the charge and discharge processes, the temperatures of the protection board 200 and the main board 300 may rapidly and drastically rise during the charge and discharge processes, and may cause a great heat radiation to the battery cell 100. Also, since the second end 202 of the protection plate 200 is connected to the main plate 300, heat radiation at a position close to the second end 202 of the protection plate 200 is greater than heat radiation received at the first end 201 of the protection plate 200, which is far from the second end 202. The thermal radiation that the first end 201 of protection shield 200 received is lower than the thermal radiation of second end 202 promptly, sets up the temperature sensing device for linking to each other with the first end 201 of protection shield 200, is about to set up the temperature sensing device for being close to the first end 201 of protection shield 200 and keeping away from the second end 202 of protection shield 200 for the temperature that the temperature sensing device sensed is influenced by the thermal radiation less, and the temperature that the temperature sensing device sensed is more close to the temperature of electric core 100 promptly.

In the disclosed embodiment, the temperature of the battery cell 100 is correlated with the resistance, and thus the performance of the battery assembly is correlated with the temperature. Different charging and discharging parameters can be set in the charging and discharging management chip on the main board 300 according to different temperatures, so that the charging and discharging performance of the battery assembly can reach the optimal state at different temperatures. The temperature sensing device transmits the sensed temperature data to the protection plate 200, and the processing chip in the protection plate 200 processes and analyzes the temperature data and transmits the result to the main board 300, for example, the result can be transmitted to a charging and discharging management system of the main board 300. The motherboard 300 makes different parameter adjustments for different temperatures. In this process, the more accurate the cell temperature sensed by the temperature sensing device is, the more the parameter adjustment can be accurately made to the main board 300, so as to exert the best charge and discharge performance of the battery pack. This disclosed setting makes the temperature sensing device can be more real sense the temperature of electric core 100 to provide more accurate temperature data to mainboard 300, so that mainboard 300 makes more accurate parameter adjustment, improves the holistic charge-discharge efficiency of battery pack, and then improves terminal equipment's function.

It should be noted that the battery pack of the present disclosure may include not only the temperature sensing device but also the pressure sensing device. The pressure sensing device can conduct the voltage of the battery core 100 to the processing chip on the protection board 200, and the processing chip transmits the collected battery core voltage to the mobile phone motherboard, so as to control the charging and discharging of the battery. The battery pack of the present disclosure may further include a current sensing device, the current sensing device may conduct the charging current of the battery cell 100 to the processing chip on the protection board 200, and the processing chip transmits the collected battery cell current to the mobile phone motherboard, so as to control charging and discharging of the battery.

Fig. 4 is a schematic structural view illustrating a battery pack according to still another exemplary embodiment. As shown in fig. 4, in an embodiment of the present disclosure, a battery assembly may include two battery cells, for example, a first battery cell 101 and a second battery cell 102. The first connection end 111 of the first cell 101 and the second connection end 121 of the second cell 102 are arranged opposite to each other. The protection plate 200 of the present disclosure is disposed between the first connection end 111 and the second connection end 121, the first connection end 111 and the protection plate 200 are electrically connected, and the second connection end 121 and the protection plate 200 are electrically connected.

In the embodiment of the present disclosure, the first connection end 111 of the first battery cell 101 and the second connection end 121 of the second battery cell 102 are oppositely disposed, and the protection plate 200 may be disposed between the first connection end 111 of the first battery cell 101 and the second connection end 121 of the second battery cell 102. A first tab 110 is disposed on the first connection end 111 of the first battery cell 101, and the first tab 110 includes a positive electrode and a negative electrode of the first battery cell 101. A second tab 120 is disposed on a second connection end 121 of the second battery cell 102, and the second tab 120 includes a positive electrode and a negative electrode of the second battery cell 102. The first cell 101 is electrically connected to the protection plate 200 via a first tab 110, and the second cell 102 is electrically connected to the protection plate 200 via a second tab 120. That is, the first battery cell 101 and the second battery cell 102 form a series circuit through the protection plate 200, and the charging voltage can be divided, so that a high current can be used for quick charging in the charging process, and the charging point speed is increased. The first tab 110 and the second tab 120 are both nickel metal sheets. The first connection end 111 of the first cell 101 and the second connection end 121 of the second cell 102 are symmetrically disposed with respect to the protection plate 200.

In the embodiment of the present disclosure, the first temperature sensing device 112 is disposed at the first connection end 111 of the first electrical core 101. The first temperature sensing device 112 is used for sensing the temperature of the first electric core 101. The first temperature sensing device 112 is electrically connected to the first end 201 of the protective plate 200. The first temperature sensing device 112 may be electrically connected to the first end 201 of the protection plate 200 by a lead wire, for example, may be electrically connected to the first end 201 of the protection plate 200 by a metal wire. The first temperature sensing device 112 conducts the temperature of the first electric core 101 to the protection plate 200, and a processing chip may be disposed on the protection plate 200. The processing chip can collect and analyze the received temperature data of the first battery cell 101, and transmit the data to the main board 300 of the terminal device. The charging management system on the motherboard 300 can adjust the charging and discharging processes of the battery assembly through the adjusting circuit, the control circuit and the like.

In the embodiment of the present disclosure, the other end of the protection plate 200 opposite to the first end 201 is a second end 202. That is, the second end 202 is the other end of the protection plate 200 away from the first end 201. The second end 202 of the protection plate 200 is electrically connected to the main board 300 for charging and discharging. Since the second end 202 of the protection plate 200 is connected to the main plate 300, heat radiation at a position near the second end 202 of the protection plate 200 is greater than heat radiation received at the first end 201 of the protection plate 200, which is far from the second end 202. The thermal radiation that the first end 201 of protection shield 200 received is lower than the thermal radiation of second end 202 promptly, link to each other first temperature-sensing device 112 with the first end 201 of protection shield 200, the temperature that makes first temperature-sensing device 112 sense is influenced by the thermal radiation less, the temperature that first temperature-sensing device 112 sensed is close to the temperature of first electric core 101 more promptly, thereby provide more accurate temperature data to mainboard 300, so that mainboard 300 makes more accurate parameter adjustment, improve the holistic charge-discharge efficiency of battery pack, and then improve terminal equipment's function.

In the embodiment of the present disclosure, the second temperature sensing device 122 is disposed at the second connection end 121 of the second electric core 102. The second temperature sensing device 122 is used for sensing the temperature of the second electric core 102. The second temperature sensing device 122 is electrically connected to the first end 201 of the protective plate 200. The second temperature sensing device 122 may be electrically connected to the first end 201 of the protection plate 200 by a lead wire, for example, may be electrically connected to the first end 201 of the protection plate 200 by a metal wire. The second temperature sensing device 122 conducts the temperature of the second electric core 102 to the protection plate 200, and a processing chip may be disposed on the protection plate 200. The processing chip can collect and analyze the received temperature data of the second electric core 102, and transmit the data to the main board 300 of the terminal device. The charging management system on the motherboard 300 can adjust the charging and discharging processes of the battery assembly through the adjusting circuit, the control circuit and the like.

In the embodiment of the present disclosure, the other end of the protection plate 200 opposite to the first end 201 is a second end 202. That is, the second end 202 is the other end of the protection plate 200 away from the first end 201. The second end 202 of the protection plate 200 is electrically connected to the main board 300 for charging and discharging. Since the second end 202 of the protection plate 200 is connected to the main plate 300, heat radiation at a position close to the second end 202 of the protection plate 200 is more heat radiation than the first end 201 of the protection plate 200 far from the second end 202. The thermal radiation that first end 201 of protection shield 200 received is lower than the thermal radiation of second end 202 promptly, link to each other second temperature-sensing device 122 with the first end 201 of protection shield 200, the temperature that makes second temperature-sensing device 122 sense is influenced by the thermal radiation less, the temperature that second temperature-sensing device 122 sensed is close to the temperature of second electric core 102 more promptly, thereby provide more accurate temperature data to mainboard 300, so that mainboard 300 makes more accurate parameter adjustment, improve the holistic charge-discharge efficiency of battery pack, and then improve terminal equipment's function.

As shown in fig. 4, the protection board 200 may be electrically connected to the main board 300 through a first connection line 303. The protection plate 200 may also be electrically connected to the main board 300 by a second connection line 304. The first connection line 303 may be a main connection line for supplying power to the motherboard. The second connection line 304 may be an auxiliary connection line, and may transmit information such as temperature, voltage, and charging current collected by the protection plate 200 to the main board 300, and the main board 300 may control the charging and discharging processes of the battery assembly according to the information. For example, in one embodiment, the battery assembly may be secured in the battery compartment of the terminal device by a peel-off sticker or double-sided adhesive. When the terminal equipment is charged, the main board current is connected into the battery through the first connecting line 303 and the second connecting line 304; during the discharging process of the terminal device, the power may be supplied to the main board 300 by the first connection line 303. When the battery pack is in the discharging process, the first connection line 303 supplies power to the main board 300. In the whole process of charging and discharging, the temperature, voltage, current and the like of the battery core can be conducted into the processing chip of the protection board 200 through the induction device, and the processing chip transmits the collected information such as the temperature, the voltage and the current of the battery core to the mobile phone motherboard 300 through the auxiliary connecting line, so that the charging and discharging of the battery are controlled.

Based on the same conception, the embodiment of the disclosure also provides a terminal device. The terminal device of the present disclosure includes the battery assembly of any one of the foregoing embodiments.

This disclosed terminal equipment sets up through the link with a plurality of electric cores relatively to set up the protection shield between the link of a plurality of electric cores, make battery pack's space utilization increase, and then provide the space for improving battery pack capacity.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. 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.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the concepts disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A battery assembly, comprising:

the connecting ends of every two of the battery cells are oppositely arranged; and

and the protection plate is arranged between the connecting ends of the plurality of battery cells and is electrically connected with the connecting ends of the battery cells.

2. The battery assembly of claim 1,

the connecting end of the battery cell is provided with a tab;

the tab is electrically connected with the protection plate.

3. The battery assembly of claim 2, further comprising:

the tab is electrically connected with the protection plate by welding.

4. The battery assembly of claim 1, further comprising:

a plurality of temperature sensing devices respectively arranged at each of the connection ends of the cells

The temperature sensing device is electrically connected with the first end of the protection plate.

5. The battery assembly of claim 4,

the second end of the protection plate is electrically connected with the main board, wherein the second end is the other end of the protection plate opposite to the first end.

6. The battery assembly of claim 5,

the second end of protection shield is provided with the connecting wire, the connecting wire is connected with the mainboard electricity for charge-discharge.

7. The battery assembly of claim 1,

the battery cores are arranged in series.

8. The battery assembly of claim 1,

the connecting ends of every two electric cores are symmetrically arranged relative to the protection plate.

9. The battery module according to any one of claims 1 to 8,

the number of the electric cores is two.

10. A terminal device, characterized in that the terminal device comprises a battery assembly according to any one of claims 1-9.

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