Battery and mobile terminal

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and a mobile terminal. The battery comprises a battery cell, a protection plate and a semiconductor refrigerator, wherein the semiconductor refrigerator comprises a cold end and a hot end; the cold end is close to the protection plate, and the hot end is close to the cell; and the semiconductor cooler is used for controlling the temperature rise of the protection plate and heating the battery cell. The cold end of the semiconductor cooler is arranged close to the protection plate, the hot end of the semiconductor cooler is arranged close to the battery cell, and the semiconductor cooler is used for controlling the temperature rise of the protection plate and heating the battery cell. The semiconductor cooler can reduce the temperature of the protection plate when the temperature rise of the protection plate is too high, so that the condition that the whole battery is overheated is reduced; and the semiconductor cooler also heats the battery cell in a low-temperature environment so as to keep the activity of the battery cell. And the semiconductor cooler can be used for well controlling the temperature rise of the protection plate and the temperature of the battery cell at the same time. And the semiconductor cooler also has the advantage of small size, and can meet the requirement of the battery on energy density.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery and a mobile terminal. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy. Batteries have a long service life and efficiency at a suitable temperature. Specifically, for the protection board in the battery, the temperature rise of the protection board needs to be controlled. Because with the pursuit of faster charging time, the charging power is getting higher and higher, and the current that the protection board needs to withstand is also getting higher and higher, and high-power protection boards often cannot guarantee safety due to excessive temperature rise. For the battery cells, because the internal activity of the battery cells is weak in a low temperature environment and the discharge capacity is poor, especially for lithium-ion batteries, the temperature of the battery cells needs to be increased.

[0003] The common way to cool the protection board is to conduct the temperature of the protection board to the battery cell, such as using a special material head tape to conduct heat, which has little effect and has little effect on the temperature rise of the protection board. Alternatively, the internal resistance of the protection board itself can be reduced by increasing the width and thickness of the protection board to reduce the temperature rise. However, due to the increasing requirements of battery energy density and increasingly stringent requirements for structural dimensions, it is obviously not possible to increase the width and thickness of the protection board too much.

[0004] The common method of heating the battery cell is to heat the surface of the battery cell with a resistance wire. However, the heating method of the battery cell with a resistance wire consumes a lot of energy and takes up a lot of space, which is not suitable for the increasingly high requirements for battery cell size and thickness. Alternatively, the battery cell can be heated externally to keep the chemical substances in the battery cell at a high activity temperature. The solution for external heating of the battery cell is generally to lay copper, and in extreme environments, the use of external heating has very large limitations, and a heat source needs to be created to heat the battery.

[0005] Obviously, the temperature control method of the battery in the prior art has the problems of poor control effect on the temperature rise of the protection plate, high energy consumption for the temperature control of the battery cell, and affects the energy density requirement of the battery. Utility Model Content

[0006] In view of this, the utility model aims to propose a battery and a mobile terminal to solve or partially solve the problems of the existing temperature control method of the battery, which has poor temperature rise control effect on the protection plate, high energy consumption for battery cell temperature control, and affects the battery's energy density requirements.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] In a first aspect, an embodiment of the utility model provides a battery, which includes a battery cell, a protection plate and a semiconductor refrigerator, wherein the semiconductor refrigerator includes a cold end and a hot end; the cold end is arranged close to the protection plate, and the hot end is arranged close to the battery cell; the semiconductor refrigerator is used to control the temperature rise of the protection plate and heat the battery cell.

[0009] Furthermore, one end of the semiconductor refrigerator is the cold end, and the other end of the semiconductor refrigerator is the hot end; the battery core and the protection plate are arranged at intervals, and the semiconductor refrigerator is located between the battery core and the protection plate.

[0010] Furthermore, the protection plate is arranged transversely with respect to the battery core, and in the thickness direction of the protection plate, the end wall of the protection plate is connected to the cold end.

[0011] Furthermore, the protection plate is vertically arranged relative to the battery core, and in the thickness direction of the protection plate, the side wall of the protection plate is connected to the cold end.

[0012] Furthermore, the cold end is provided on the first surface of the semiconductor refrigerator, and the hot end is provided on the second surface of the semiconductor refrigerator, and the first surface and the second surface are adjacent surfaces; the protective plate is vertically arranged relative to the battery cell, and in the thickness direction of the protective plate, the side wall of the protective plate is connected to the battery cell, the end wall of the protective plate is connected to the cold end, and the hot end is connected to the battery cell.

[0013] Furthermore, the protection plate is electrically connected to the semiconductor refrigerator, and the protection plate supplies power to the semiconductor refrigerator.

[0014] Furthermore, a switch control unit is provided on the protection board, and the switch control unit is electrically connected to the semiconductor refrigerator. The switch control unit is used to control the current flowing from the protection board to the semiconductor refrigerator.

[0015] Furthermore, the switch control unit includes at least one of a MOS tube and a triode.

[0016] Furthermore, the battery also includes a temperature detection unit, which is connected to the switch control unit. The temperature detection unit is used to detect the temperature of the battery cell and / or the protective plate. The switch control unit controls the current flowing from the protective plate to the semiconductor refrigerator according to the temperature of the battery cell and / or the protective plate.

[0017] In a second aspect, an embodiment of the utility model provides a mobile terminal, which includes a terminal body and a battery. The battery is arranged in the terminal body, and the battery is such as the battery mentioned above.

[0018] Compared with the prior art, the battery described in the utility model has the following advantages:

[0019] In the battery of the utility model, the cold end of the semiconductor cooler is arranged close to the protective plate, and the hot end of the semiconductor cooler is arranged close to the battery cell. The semiconductor cooler is used to control the temperature rise of the protective plate and heat the battery cell. The semiconductor cooler can lower the temperature of the protective plate when the temperature rise of the protective plate is too high, thereby reducing the overall overheating of the battery and increasing the safety and reliability of the battery. The semiconductor cooler also heats the battery cell in a low temperature environment to maintain the activity of the battery cell, thereby solving the problem that the battery cell has low activity and cannot be used under low temperature conditions. That is, the semiconductor cooler in the battery can simultaneously have better temperature rise control on the protective plate and temperature control on the battery cell. Moreover, the semiconductor cooler also has the advantages of small size, reliable operation, and easy cooling adjustment, which can meet the energy density requirements of the battery.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a three-dimensional view of a battery according to the first embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a three-dimensional view of a battery according to a second embodiment of the utility model;

[0024] Figure 3 for Figure 1 A structural schematic diagram of a right side view of the battery;

[0025] Figure 4 It is a structural schematic diagram of a three-dimensional view of a battery according to a third embodiment of the utility model;

[0026] Figure 5 for Figure 4 A structural schematic diagram of a right side view of the battery;

[0027] Figure 6It is a structural schematic diagram of a right side view of a battery according to a fourth embodiment of the utility model;

[0028] Figure 7 A schematic diagram of the battery connection relationship described in an embodiment of the utility model;

[0029] Figure 8 This is a schematic diagram of a partial circuit diagram on the protection board described in an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 10-battery cell; 11-semiconductor refrigerator; 12-hot end; 13-cold end; 14-protection board; 15-switch control unit; 16-temperature detection unit. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The present application embodiment discloses a battery, referring to Figure 1 , which shows a schematic diagram of the structure of the battery described in the embodiment of the present application. The battery includes a battery cell 10, a protection plate 14 and a semiconductor cooler 11, and the semiconductor cooler 11 includes a cold end 13 and a hot end 12; the cold end 13 is arranged close to the protection plate 14, and the hot end 12 is arranged close to the battery cell 10; the semiconductor cooler 11 is used to control the temperature rise of the protection plate 14 and heat the battery cell 10.

[0034] The battery cell 10 refers to a single electrochemical battery cell 10 having a positive electrode and a negative electrode. The protection board 14 plays a protective role, which is used to protect the battery cell 10 from damage and extend the service life of the battery cell 10, and can prevent the battery cell 10 from overcharging, overdischarging, overcurrent, short circuit, and ultra-high temperature charging and discharging.

[0035] Semiconductor refrigerator 11 refers to a device that uses the thermoelectric effect of semiconductors to produce cold. Semiconductor refrigerator 11 is a cooling / heating device composed of semiconductors, and semiconductor thermocouples include N-type semiconductors and P-type semiconductors. N-type materials have excess electrons and have negative thermoelectric potential; P-type materials have insufficient electrons and have positive thermoelectric potential; when electrons pass through the junction from P-type materials to N-type materials, the temperature of the junction is lower and its energy must increase; on the contrary, when electrons flow from N-type materials to P-type materials, the temperature of the junction will rise. Connect a P-type semiconductor element and an N-type semiconductor element into a pair of thermocouples. After connecting a DC power supply, a temperature difference and heat transfer will occur at the joint. The direction of the current is from the N-type semiconductor element to the P-type semiconductor element, the temperature drops and absorbs heat, which is the cold end 13; on the contrary, the direction of the current is from the P-type semiconductor element to the N-type semiconductor element, the temperature rises and releases heat, which is the hot end 12. The semiconductor refrigerator 11 has the characteristics of no noise, no vibration, no need for refrigerant, small size, light weight, etc., and is reliable in operation, easy to operate, and easy to adjust the cooling capacity.

[0036] In the battery of the embodiment of the present application, the cold end 13 of the semiconductor refrigerator 11 is arranged close to the protective plate 14, and the hot end 12 of the semiconductor refrigerator 11 is arranged close to the battery cell 10. The semiconductor refrigerator 11 is used to control the temperature rise of the protective plate 14 and heat the battery cell 10. The semiconductor refrigerator 11 can reduce the temperature of the protective plate 14 when the temperature rise of the protective plate 14 is too high, thereby reducing the situation of overheating of the battery as a whole and increasing the safety and reliability of the battery; the semiconductor refrigerator 11 also heats the battery cell 10 in a low temperature environment to keep the battery cell 10 active, thereby solving the problem that the battery cell 10 is low in activity and cannot be used in a low temperature state. That is, the semiconductor refrigerator 11 in the battery can have better temperature rise control of the protective plate 14 and temperature control of the battery cell 10 at the same time. Moreover, the semiconductor refrigerator 11 also has the advantages of small size, reliable operation, and easy cooling adjustment, which can meet the energy density requirements of the battery.

[0037] In a specific embodiment, the battery can be a lithium-ion secondary rechargeable battery, which includes a battery cell 10 and a protective plate 14. The cold end 13 of the semiconductor refrigerator 11 is arranged close to the protective plate 14, and the hot end 12 of the semiconductor refrigerator 11 is arranged close to the battery cell 10. The temperature of the lithium-ion secondary rechargeable battery can be reliably controlled by the semiconductor refrigerator 11, so that the lithium-ion secondary rechargeable battery has a higher service life and efficiency at an appropriate temperature.

[0038] Optionally, a first heat-conducting isolator is provided between the cold end 13 of the semiconductor refrigerator 11 and the protection plate 14, and the first heat-conducting isolator plays the role of fixing and conducting heat, and can also perform the role of electrical isolation. That is, the heat of the protection plate 14 can be transferred to the cold end 13 of the semiconductor refrigerator 11 through the first heat-conducting isolator, and the protection plate 14 can cool down the temperature of the protection plate 14 when the temperature rise is too high by heat dissipation. The first heat-conducting isolator can also achieve electrical isolation between the protection plate 14 and the semiconductor refrigerator 11.

[0039] It is understandable that the first heat-conducting isolation member is not specifically limited in the embodiment of the present application. For example, the first heat-conducting isolation member is a silicone pad, a double-sided adhesive tape, a heat-conducting silicone, etc.

[0040] Optionally, a second heat-conducting spacer is provided between the hot end 12 of the semiconductor refrigerator 11 and the battery cell 10, and the second heat-conducting spacer also plays the role of fixing and conducting heat, and can perform electrical isolation. Specifically, the heat of the hot end 12 of the semiconductor refrigerator 11 can be transferred to the battery cell 10 through the second heat-conducting spacer, thereby increasing the temperature of the battery cell 10. The second heat-conducting spacer can also achieve electrical isolation between the semiconductor refrigerator 11 and the battery cell 10.

[0041] It is understandable that the second heat-conducting isolation member is not specifically limited in the embodiment of the present application. For example, the second heat-conducting isolation member is a silicone pad, a double-sided adhesive tape, a heat-conducting silicone, etc.

[0042] It is understandable that the cold end 13 of the semiconductor cooler 11 and the protection plate 14 can be directly connected or connected through the first heat-conducting isolating member. Similarly, the hot end 12 of the semiconductor cooler 11 and the battery cell 10 can be directly connected or connected through the second heat-conducting isolating member.

[0043] Optionally, in one embodiment, referring to Figure 1 As shown, one end of the semiconductor cooler 11 is a cold end 13 , and the other end of the semiconductor cooler 11 is a hot end 12 ; the battery cell 10 and the protection plate 14 are arranged at intervals, and the semiconductor cooler 11 is located between the battery cell 10 and the protection plate 14 .

[0044] Specific reference Figure 1 As shown, the upper end of the semiconductor cooler 11 is a cold end 13, and the upper end surface of the semiconductor cooler 11 is connected to the protection plate 14. The lower end of the semiconductor cooler 11 is a hot end 12, and the lower end surface of the semiconductor cooler 11 is connected to the battery cell 10.

[0045] Optional, see Figure 1 and Figure 3 As shown, the protection plate 14 is disposed transversely relative to the battery cell 10 , and in the thickness direction of the protection plate 14 , the end wall of the protection plate 14 is connected to the cold end 13 .

[0046] in, Figure 1 The Z direction in the figure is the thickness direction of the protection plate 14. The protection plate 14 is a flat rectangular parallelepiped component, and the protection plate 14 is laid flat. Figure 1 In the embodiment, the end wall of the lower end of the protection plate 14 is connected to the cold end 13 of the semiconductor refrigerator 11 , and the hot end 12 of the semiconductor refrigerator 11 is connected to the battery cell 10 .

[0047] Optional, see Figure 4 and Figure 5 As shown, the protection plate 14 is vertically arranged relative to the battery cell 10 , and the side wall of the protection plate 14 is connected to the cold end 13 in the thickness direction of the protection plate 14 .

[0048] in, Figure 4 The Y direction in FIG. 1 is the thickness direction of the protection plate 14. The protection plate 14 is a flat rectangular component, and the protection plate 14 is placed vertically. Figure 4 In the embodiment, the lower side wall of the protection plate 14 is connected to the cold end 13 of the semiconductor cooler 11 , and the hot end 12 of the semiconductor cooler 11 is connected to the battery cell 10 .

[0049] Optional, see Figure 6 As shown, a first surface of the semiconductor refrigerator 11 is provided with a cold end 13, a second surface of the semiconductor refrigerator 11 is provided with a hot end 12, and the first surface and the second surface are adjacent surfaces; a protective plate 14 is vertically arranged relative to the battery cell 10, and in the thickness direction of the protective plate 14, a side wall of the protective plate 14 is connected to the battery cell 10, an end wall of the protective plate 14 is connected to the cold end 13, and a hot end is connected to the battery cell 10.

[0050] in, Figure 6 The Y direction in the figure is the thickness direction of the protection plate 14. The protection plate 14 is a flat rectangular component, and the protection plate 14 is placed vertically. Figure 6 In the embodiment, the lower side wall of the protection plate 14 is connected to the battery cell 10 , the end wall in the positive direction of the protection plate 14X is connected to the cold end 13 of the semiconductor cooler 11 , and the hot end 12 of the semiconductor cooler 11 is connected to the battery cell 10 .

[0051] Further references Figure 6 As shown, in the Y direction, the thickness of the protection plate 14 is less than the thickness of the battery cell 10. The protection plate 14 and the battery cell 10 are connected to form an L-shaped space. The semiconductor refrigerator 11 is arranged in the L-shaped space. The cold end 13 of the semiconductor refrigerator 11 is connected to the protection plate 14, and the hot end 12 of the semiconductor refrigerator 11 is connected to the battery cell 10.

[0052] Optionally, the battery includes at least one battery cell 10, and the number of the battery cells 10 needs to meet the use requirements of the battery. Figure 1 , which shows a schematic diagram of the structure of a battery having a battery cell 10; referring to Figure 2, which shows a schematic structural diagram of a battery having two battery cells 10.

[0053] Optionally, the protection plate 14 is electrically connected to the battery cell 10. The battery cell 10 is provided with a tab, which is welded to the protection plate 14, and the battery cell 10 can supply power to the protection plate 14.

[0054] Optionally, the protection plate 14 is electrically connected to the semiconductor refrigerator 11 , and the protection plate 14 supplies power to the semiconductor refrigerator 11 .

[0055] The semiconductor refrigerator 11 in the embodiment of the present application requires electric energy when in use. The battery cell 10 supplies power to the protection board 14, and the protection board 14 supplies power to the semiconductor refrigerator 11, so that a direct current flows in the semiconductor refrigerator 11, and the semiconductor refrigerator 11 can achieve cooling and heating.

[0056] The protection plate 14 and the semiconductor cooler 11 can be connected via a patch, a wiring harness, or the like.

[0057] Optional, see Figure 7 As shown, a switch control unit 15 is provided on the protection plate 14 . The switch control unit 15 is electrically connected to the semiconductor refrigerator 11 . The switch control unit 15 is used to control the current flowing from the protection plate 14 to the semiconductor refrigerator 11 .

[0058] The switch control unit 15 is set so that when the temperature of the battery cell 10 is low and the temperature rise of the protection plate 14 is too high, that is, when the semiconductor refrigerator 11 needs to work, the protection plate 14 is controlled to supply power to the semiconductor refrigerator 11, so that the semiconductor refrigerator 11 can achieve the purpose of controlling the temperature rise of the protection plate 14 and heating the battery cell 10.

[0059] At the same time, the switch control unit 15 can control the current flowing from the protection plate 14 to the semiconductor refrigerator 11, thereby adjusting the temperature of the cold end 13 and the temperature of the hot end 12 of the semiconductor refrigerator 11, so that the temperature of the cold end 13 is suitable for controlling the temperature rise of the protection plate 14, that is, the temperature of the cold end 13 decreases as the temperature rise of the protection plate 14 increases; and the temperature of the hot end 12 is suitable for heating the battery cell 10, that is, the temperature of the hot end 12 increases as the temperature of the battery cell 10 decreases.

[0060] Optionally, in one embodiment, the switch control unit 15 includes at least one of a MOS tube and a triode. Among them, the MOS tube is a metal-oxide semiconductor field effect transistor. The full name of the triode is a semiconductor triode, which is a semiconductor device that controls current; the function of the triode is to amplify a weak signal into an electrical signal with a larger amplitude value, and it is also used as a contactless switch. Both the MOS tube and the triode can be used as a switch to control the current flowing from the protection board 14 to the semiconductor refrigerator 11.

[0061] Optionally, the battery also includes a temperature detection unit 16, which is connected to the switch control unit 15. The temperature detection unit 16 is used to detect the temperature of the battery cell 10 and / or the protective plate 14. The switch control unit 15 controls the current flowing from the protective plate 14 to the semiconductor refrigerator 11 according to the temperature of the battery cell 10 and / or the protective plate 14, so that the semiconductor refrigerator 11 works when needed to achieve the purpose of controlling the temperature rise of the protective plate 14 and heating the battery cell 10.

[0062] The embodiment of the present application does not specifically limit the temperature detection unit 16, and the temperature detection unit 16 may be a temperature sensor, a thermistor, or other components. The temperature detection unit 16 may be connected or in contact with the battery cell 10 and the protection board 14 to directly measure the temperature of the battery cell 10 and the protection board 14, or may indirectly measure the temperature of the battery cell 10 and the protection board 14.

[0063] In a specific example, referring to Figure 8 As shown, the temperature detection unit 16 is a thermistor RT1, which is used to measure the temperature of the battery cell 10; the switch control unit 15 is a MOS tube Q1, and the source S of the MOS tube Q1 is used to be electrically connected to the semiconductor refrigerator 11. When the temperature of the battery cell 10 is low, the resistance value of the thermistor RT1 is relatively high. At this time, the voltage at the gate G of the MOS tube Q1 is relatively high, the MOS tube Q1 is turned on, and the current flows to the semiconductor refrigerator 11. The semiconductor refrigerator 11 heats the battery cell 10 and cools the protection plate 14 at the same time. It can be understood that there can be a variety of connection structures of MOS tubes and triodes in the circuit, and the embodiment of the present application does not make specific limitations on this, as long as it meets the use requirements.

[0064] The temperature detection unit 16 can detect the temperature of the battery cell 10 alone or the temperature of the protective plate 14 alone. The switch control unit 15 controls the current flowing from the protective plate 14 to the semiconductor refrigerator 11 according to the temperature of the battery cell 10 or the protective plate 14, thereby satisfying the semiconductor refrigerator 11's cooling demand for the protective plate 14 and the heating demand for the battery cell 10.

[0065] When the battery of the embodiment of the present application is in use, when the temperature detection unit 16 detects that the temperature of the battery cell 10 is low and / or the temperature rise of the protective plate 14 is high, the temperature detection unit 16 transmits the detected temperature information to the switch control unit 15. The switch control unit 15 controls the current flowing from the protective plate 14 to the semiconductor refrigerator 11 according to the temperatures of the battery cell 10 and the protective plate 14, so that the semiconductor refrigerator 11 can achieve the purpose of controlling the temperature rise of the protective plate 14 and heating the battery cell 10.

[0066] The battery of the embodiment of the present application reduces the temperature of the protection board 14 when charging with a large current, which to a certain extent solves the problem that the battery cannot be used in a low temperature environment, and at the same time solves the problem that the protection board 14 overheats when charging with a large current.

[0067] In the battery of the embodiment of the present application, the semiconductor cooler 11 can lower the temperature of the protection plate 14 when the temperature rise of the protection plate 14 is too high, thereby reducing the overheating of the battery as a whole and increasing the safety and reliability of the battery; the semiconductor cooler 11 also heats the battery cell 10 in a low temperature environment to maintain the activity of the battery cell 10, thereby solving the problem that the battery cell 10 has low activity and cannot be used in a low temperature state. That is, the semiconductor cooler 11 in the battery can simultaneously have better temperature rise control of the protection plate 14 and temperature control of the battery cell 10. Moreover, the semiconductor cooler 11 also has the advantages of small size, reliable operation, and easy cooling, which can meet the energy density requirements of the battery.

[0068] The embodiment of the present application also discloses a mobile terminal, which includes a terminal body and a battery. The battery is arranged in the terminal body, and the battery is such as the battery mentioned above.

[0069] Since the battery can achieve better temperature control, the battery can be used at an appropriate temperature, and the battery has a longer service life and efficiency, thereby improving user satisfaction with the use of the mobile terminal.

[0070] It should be noted that, for the method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present application are not limited by the described order of actions, because according to the embodiments of the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present application.

[0071] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0072] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A battery, characterized in that: The battery comprises a battery cell (10), a protective plate (14) and a semiconductor cooler (11); the semiconductor cooler (11) comprises a cold end (13) and a hot end (12); the cold end (13) is arranged close to the protective plate (14), and the hot end (12) is arranged close to the battery cell (10); the semiconductor cooler (11) is used to control the temperature rise of the protective plate (14) and heat the battery cell (10).

2. The battery according to claim 1, characterized in that One end of the semiconductor cooler (11) is the cold end (13), and the other end of the semiconductor cooler (11) is the hot end (12); the battery core (10) and the protective plate (14) are arranged at intervals, and the semiconductor cooler (11) is located between the battery core (10) and the protective plate (14).

3. The battery according to claim 2, characterized in that The protection plate (14) is arranged transversely relative to the battery core (10), and in the thickness direction of the protection plate (14), the end wall of the protection plate (14) is connected to the cold end (13).

4. The battery according to claim 2, characterized in that The protection plate (14) is arranged vertically relative to the battery core (10), and in the thickness direction of the protection plate (14), the side wall of the protection plate (14) is connected to the cold end (13).

5. The battery according to claim 1, characterized in that The first surface of the semiconductor refrigerator (11) is provided with the cold end (13), and the second surface of the semiconductor refrigerator (11) is provided with the hot end (12), and the first surface and the second surface are adjacent surfaces; the protective plate (14) is vertically arranged relative to the battery cell (10), and in the thickness direction of the protective plate (14), the side wall of the protective plate (14) is connected to the battery cell (10), the end wall of the protective plate (14) is connected to the cold end (13), and the hot end is connected to the battery cell (10).

6. The battery according to claim 1, characterized in that The protection plate (14) is electrically connected to the semiconductor refrigerator (11), and the protection plate (14) supplies power to the semiconductor refrigerator (11).

7. The battery according to claim 6, characterized in that A switch control unit (15) is provided on the protection plate (14), the switch control unit (15) is electrically connected to the semiconductor refrigerator (11), and the switch control unit (15) is used to control the current flowing from the protection plate (14) to the semiconductor refrigerator (11).

8. The battery according to claim 7, characterized in that The switch control unit (15) comprises at least one of a MOS tube and a triode.

9. The battery according to claim 7, characterized in that The battery further comprises a temperature detection unit (16), the temperature detection unit (16) being connected to the switch control unit (15), the temperature detection unit (16) being used to detect the temperature of the battery cell (10) and / or the protection plate (14), and the switch control unit (15) controlling the current flowing from the protection plate (14) to the semiconductor refrigerator (11) according to the temperature of the battery cell (10) and / or the protection plate (14).

10. A mobile terminal, characterized in that: The invention comprises a terminal body and a battery, wherein the battery is arranged in the terminal body, and the battery is the battery as claimed in any one of claims 1 to 9.

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