CN108695565A - Battery, battery system and battery using method - Google Patents

Abstract

The embodiment of the invention provides a battery, a battery system and a battery using method. The battery provided by the embodiment of the invention comprises: a liquid electrolyte cell and a solid electrolyte cell; the liquid electrolyte cell is capable of thermally conducting with the solid electrolyte cell. The technical scheme provided by the embodiment of the invention realizes the effect of improving the energy density of the battery, and in addition, the liquid electrolyte cell can generate heat in the discharging process, and the heat is utilized to heat the solid electrolyte, so that the energy utilization rate is improved.

Description

Batteries, battery systems, and methods of using batteries

technical field

The invention relates to the technical field of batteries, in particular to a battery, a battery system and a method for using the battery.

Background technique

Among the current energy storage products, lithium-ion batteries have attracted much attention since they were put into the market in 1991 because of their long service life. They are widely used in terminals, electric tools, electric bicycles, electric vehicles and other fields, and have become an energy An indispensable product in the economy.

Lithium-ion batteries in the prior art are mostly composed of positive pole pieces, negative pole pieces, separators, and liquid electrolytes. Among them, the positive pole pieces are made of materials such as graphite, and the negative pole pieces are made of materials such as lithium cobaltate. The liquid electrolyte is made by mixing materials such as dimethyl carbonate, propylene carbonate, and lithium hexafluorophosphate. After the lithium-ion battery cell is manufactured, it is packaged to form a battery.

However, because the rated capacity of a battery composed of lithium-ion cells is fixed, the energy density of the battery is also fixed. When the battery is used in a scenario that requires high energy density, such as electric vehicles, liquid The battery energy density of lithium-ion batteries with electrolytes is relatively low, which affects battery life.

Contents of the invention

Embodiments of the present invention provide a battery, a battery system, and a method for using the battery, so as to improve the energy density of a battery with the same volume.

An embodiment of the present invention provides a battery, including: a liquid electrolyte cell and a solid electrolyte cell; the liquid electrolyte cell can conduct heat conduction with the solid electrolyte cell.

According to the foregoing aspect and any possible implementation manner, an implementation manner is further provided, wherein the liquid electrolyte cell is in contact with the solid electrolyte cell.

According to the foregoing aspect and any possible implementation manner, an implementation manner is further provided, wherein the liquid electrolyte cell is connected to the solid electrolyte cell through a heat pipe.

According to the above aspect and any possible implementation mode, an implementation mode is further provided, there are N liquid electrolyte cells, and N is an integer greater than or equal to 2; there are N solid electrolyte cells, so Said N is an integer greater than or equal to 2;

A specified number of the liquid electrolyte cells is spaced apart from a specified number of the solid electrolyte cells.

According to the above aspect and any possible implementation mode, an implementation mode is further provided, there are N liquid electrolyte cells, and N is an integer greater than or equal to 2; there is one solid electrolyte cell;

The solid electrolyte cell is wound on the side wall of the liquid electrolyte cell.

According to the above aspect and any possible implementation mode, an implementation mode is further provided, there are N liquid electrolyte cells, and N is an integer greater than or equal to 2; there is one solid electrolyte cell;

The solid electrolyte cells are wound around the side walls of the liquid electrolyte cells in a "serpentine shape", and the liquid electrolyte cells are spaced apart by a specified number.

According to the above aspect and any possible implementation mode, an implementation mode is further provided, wherein the liquid electrolyte cell is a lithium cobaltate cell, a lithium nickelate cell, a lithium manganate cell, or a lithium iron phosphate cell And one of the nickel-cobalt lithium manganese oxide batteries.

According to the above-mentioned aspect and any possible implementation mode, an implementation mode is further provided, wherein the solid-state electrolyte battery cell is a polymer solid-state lithium-ion battery cell, and the polymer solid-state lithium-ion battery cell is made of a polymer solid-state lithium-ion battery cell. One or more of ether series, polyacrylonitrile series, polymethacrylate, polyvinylidene fluoride, polycarbonate, polysilane, polystyrene and their block polymers form the matrix.

An embodiment of the present invention also provides a battery system, including: any of the above-mentioned batteries, a temperature sensor, and a transfer switch;

The transfer switch is respectively connected to the liquid electrolyte cell and the solid electrolyte cell in the battery;

The temperature sensor is respectively connected with the solid electrolyte cell and the transfer switch.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the battery system further includes: a battery management unit;

The battery management unit is connected to the battery.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the battery system further includes: a temperature management unit;

The temperature management unit is connected to the battery.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the battery system further includes: a power unit;

The power unit is connected with the transfer switch.

The embodiment of the present invention also provides a method for using a battery, which is applied to a battery including a solid electrolyte cell and a liquid electrolyte cell, including:

Use a temperature sensor to detect the temperature of the solid electrolyte cell;

If the temperature of the solid electrolyte cell is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the transfer switch turns on the liquid electrolyte cell, and the liquid electrolyte cell is used for power supply;

If the temperature of the solid electrolyte cell is greater than the second temperature threshold and less than or equal to the third temperature threshold, the transfer switch turns on the solid electrolyte cell and the liquid electrolyte cell, using the solid electrolyte cell and the liquid electrolyte cell The liquid electrolyte cells supply power at the same time;

If the temperature of the solid electrolyte cell is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the transfer switch is disconnected from the liquid electrolyte cell, and the solid electrolyte cell is used for power supply;

The fourth temperature threshold is greater than the third temperature threshold, the third temperature threshold is greater than the second temperature threshold, and the second temperature threshold is greater than the first temperature threshold.

According to the above aspect and any possible implementation, there is further provided an implementation, after using the temperature sensor to detect the temperature of the solid electrolyte cell, the method further includes:

Sending the detected temperature of the solid electrolyte cell to the battery management unit.

According to the above aspect and any possible implementation, there is further provided an implementation, where the transfer switch turns on the liquid electrolyte cell, including:

receiving a first instruction sent by the battery management unit;

The changeover switch turns on the liquid electrolyte cell according to the first instruction.

According to the above aspect and any possible implementation, there is further provided an implementation, where the transfer switch conducts the solid electrolyte cell and the liquid electrolyte cell, including:

receiving a second instruction sent by the battery management unit;

The changeover switch conducts the liquid electrolyte cell and the liquid electrolyte cell according to the second instruction.

According to the above aspect and any possible implementation, there is further provided an implementation where the transfer switch is disconnected from the liquid electrolyte cell, including:

receiving a third instruction sent by the battery management unit;

The transfer switch is disconnected from the liquid electrolyte cell according to the third instruction.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the first temperature threshold is between -45°C and -35°C;

The second temperature threshold is between 35°C and 45°C;

The third temperature threshold is between 55°C and 65°C;

The fourth temperature threshold is between 115°C and 125°C.

The battery, the battery system and the method for using the battery provided by the embodiments of the present invention are provided with cells of two materials in the battery, one of which is a liquid electrolyte cell and the other is a solid electrolyte cell, and the two The battery cell of the material can directly conduct heat conduction, and the liquid electrolyte cell will generate heat during the discharge process, and use this heat to heat the solid electrolyte cell, which improves the ionic conductivity of the solid electrolyte cell so that the solid electrolyte cell can meet the output power. Demand, so that the battery with the above two batteries can have a higher energy density effect than the battery with only one liquid electrolyte battery, which solves the problem of using a single liquid electrolyte lithium ion in the prior art. The battery energy density of the battery cell is low.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a battery provided by an embodiment of the present invention;

Fig. 2A is the first top view of the battery provided by the embodiment of the present invention;

Fig. 2B is a second top view of the battery provided by the embodiment of the present invention;

Fig. 2C is a third top view of the battery provided by the embodiment of the present invention;

Fig. 3A is a fourth top view of the battery provided by the embodiment of the present invention;

Fig. 3B is a fifth top view of the battery provided by the embodiment of the present invention;

Fig. 3C is a sixth top view of the battery provided by the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an embodiment of a battery system provided by an embodiment of the present invention;

Fig. 5 is another structural schematic diagram of an embodiment of a battery system provided by an embodiment of the present invention;

FIG. 6 is a flowchart of an embodiment of a method for using a battery provided by an embodiment of the present invention;

FIG. 7 is another flow chart of an embodiment of a method for using a battery provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Embodiment one

FIG. 1 is a schematic structural diagram of a battery provided by an embodiment of the present invention. As shown in FIG. 1 , the battery provided by the present invention includes: a liquid electrolyte cell 1 and a solid electrolyte cell 2 . Among them, the discharge process of the liquid electrolyte cell 1 will generate heat, while the ionic conductivity of the solid electrolyte cell 2 is affected by temperature, which can be reflected in the fact that the ionic conductivity of the solid electrolyte cell 2 at room temperature is very low, seriously affecting The output power of the solid electrolyte cell 2 . Therefore, in the embodiment of the present invention, the heat generated by the liquid electrolyte cell 1 and the solid electrolyte cell 2 is transferred to the solid electrolyte cell 2 by means of heat conduction between the liquid electrolyte cell 1 and the solid electrolyte cell 2, so that the solid electrolyte cell 2 The temperature of the core 2 increases, thereby achieving the effect of improving the ion conductivity of the solid electrolyte cell 2 .

In a specific implementation process, the liquid electrolyte cell 1 is in contact with the solid electrolyte cell 2, and the cells of the two materials are in direct contact, so that the heat of the liquid electrolyte cell 1 can be directly transferred to the solid electrolyte cell 2, for example , the solid electrolyte cell 2 can be placed around the side wall of a liquid electrolyte cell 1 , it can be understood that there are four solid electrolyte cells 2 . For another example, a solid electrolyte cell 2 is closely attached to the side wall of a rectangular liquid electrolyte cell 1 .

In a specific implementation process, the liquid electrolyte cell 1 and the solid electrolyte cell 2 are connected through a heat pipe. One end of the heat pipe is connected to the liquid electrolyte cell 1, and the other end of the heat pipe is connected to the solid electrolyte cell 1, so that the heat generated by the liquid electrolyte cell 1 during the discharge process can be transferred to the solid electrolyte cell 2 through the heat pipe, for The solid electrolyte cell 2 is heated.

Since the rated capacity of a single cell is limited, when the battery is used in a scenario that requires a large energy density, for example, in an electric vehicle where the battery is used, multiple cells are usually installed in the battery, and the gap between multiple cells Connect in parallel or in series to increase the rated capacity of the battery. Therefore, in the embodiment of the present invention, there may be N liquid electrolyte cells 1, N being an integer greater than or equal to 2, and N solid electrolyte cells 2, N being an integer greater than or equal to 2, and a specified number of liquid electrolyte cells Electrolyte cells 1 and a specified number of solid electrolyte cells 2 are arranged at intervals.

In the embodiment of the present invention, its specific implementation can be described as an example in the following three figures. FIG. 2A is the first top view of the battery provided by the embodiment of the present invention, and FIG. Top view, Figure 2C is the third top view of the battery provided by the embodiment of the present invention, as shown in Figure 2A, there are 3 liquid electrolyte cells 1, 4 solid electrolyte cells 2, and 1 solid electrolyte cell 2 and 1 The liquid electrolyte cells 1 are arranged at intervals. As shown in FIG. 2B , there are four liquid electrolyte cells 1 and three solid electrolyte cells 2 , and one solid electrolyte cell 2 and two liquid electrolyte cells 1 are arranged at intervals. As shown in FIG. 2C , there are six liquid electrolyte cells 1 and three solid electrolyte cells 2 , and one solid electrolyte cell 2 and three liquid electrolyte cells 1 are arranged at intervals.

It can be understood that Fig. 2A , Fig. 2B , and Fig. 2C in the embodiment of the present invention are only expedient illustrations, and do not limit the quantity and arrangement of the cells of the two materials in practical applications.

In the embodiment of the present invention, since the solid electrolyte cell 2 is flexible, it can be bent into other shapes. Therefore, in a specific implementation process, there are N liquid electrolyte cells 1, and N is greater than or equal to An integer of 2, there is one solid electrolyte cell 2, and the solid electrolyte cell 2 is wound on the side wall of the liquid electrolyte cell 1. It can be understood that the solid electrolyte cell 2 at this time forms a "square shape" when viewed from a top view. Alternatively, the solid electrolyte cell 2 is wound on the side wall of the liquid electrolyte cell 1 in a "serpentine shape", and the liquid electrolyte cell 1 is spaced apart by a specified number.

In the embodiment of the present invention, its specific implementation can be described as an example in the following three figures. FIG. 3A is the fourth top view of the battery provided by the embodiment of the present invention, and FIG. Top view, Figure 3C is the sixth top view of the battery provided by the embodiment of the present invention, as shown in Figure 3A, there are 6 liquid electrolyte cells 1, and 1 solid electrolyte cell 2, and the solid electrolyte cells 2 will be arbitrarily adjacent The two liquid electrolyte cells 1 are separated. As shown in FIG. 3B , there are six liquid electrolyte cells 1 and one solid electrolyte cell 2 , and the solid electrolyte cells 2 separate the liquid electrolyte cells 1 in pairs. As shown in FIG. 3C , there are six liquid electrolyte cells 1 and one solid electrolyte cell 2 , and the solid electrolyte cells 2 separate the liquid electrolyte cells 1 by 3 units.

In a specific implementation process, the liquid electrolyte cell 1 in the same battery is one of lithium cobalt oxide cells, lithium nickel oxide cells, lithium manganese oxide cells, lithium iron phosphate cells, and lithium nickel cobalt oxide cells.

In a specific implementation process, the solid electrolyte cell 2 in the same battery is a polymer solid lithium ion cell, and the polymer solid lithium ion cell is made of polyoxyethylene, polyoxyethylene derivatives, polysiloxane and One or several of its derivatives form the matrix.

In a specific implementation process, the solid electrolyte cell 2 in the same battery is a polymer solid lithium ion cell, and the polymer solid lithium ion cell is made of polyether, polyacrylonitrile, polymethacrylate, One or more of polyvinylidene fluoride, polycarbonate, polysilane, polystyrene and their block polymers constitute the matrix.

In a specific implementation process, the ratio of the rated power of the liquid electrolyte cell 1 to the rated power of the solid electrolyte cell 2 in the same battery is greater than or equal to 2.

The battery provided by the embodiment of the present invention is provided with cells of two materials in the battery, one of which is a liquid electrolyte cell 1 and the other is a solid electrolyte cell 2, and the cells of the two materials are directly It can carry out heat conduction, and the liquid electrolyte cell 1 will generate heat during the discharge process, and use this heat to heat the solid electrolyte cell 2, which improves the ionic conductivity of the solid electrolyte cell 2 so that the solid electrolyte cell 2 can meet the output power requirements , so that the battery with the above two batteries can have a higher energy density effect than the battery with only one liquid electrolyte battery 1, which solves the problem of using a single liquid electrolyte lithium in the prior art The problem of low battery energy density of ion cells.

In addition, because the electrolyte of the solid electrolyte cell 2 is a non-volatile, non-flammable and explosive solid polymer, when the solid electrolyte cell 2 is deformed or collided, short circuits and other side reactions are not likely to occur, and the safety performance is high. Therefore, disposing the solid electrolyte cell 2 outside the liquid electrolyte cell 1 can improve the safety of the battery.

Embodiment two

FIG. 4 is a schematic structural diagram of an embodiment of a battery system provided by an embodiment of the present invention. As shown in FIG. 4 , the battery system provided by an embodiment of the present invention may include a battery 11 , a temperature sensor 12 and a transfer switch 13 in Embodiment 1.

Wherein, the switch 13 is respectively connected with the liquid electrolyte cell 1 and the solid electrolyte cell 2 in the battery 11 , and the temperature sensor 12 is connected with the solid electrolyte cell 2 and the switch 13 respectively. The temperature sensor 12 is used to detect the temperature of the solid electrolyte cell 2. When the temperature of the solid electrolyte cell 2 is low, the switch 13 turns on the liquid electrolyte cell 1, disconnects the solid electrolyte cell 2, and uses the liquid electrolyte cell 1 The stored energy outputs electrical energy to the outside. As the liquid electrolyte cell 1 outputs electric energy, the heat generated by it can heat the solid electrolyte cell 2 to increase the temperature of the solid electrolyte cell 2 . When the temperature sensor 12 detects that the temperature of the solid electrolyte cell 2 reaches the temperature threshold, the switch 13 is used to turn on the solid electrolyte cell 2, and the energy stored in the liquid electrolyte cell 1 and the energy stored in the solid electrolyte cell 2 are simultaneously transferred to External output power. As the temperature of the solid electrolyte cell 2 continues to rise, when its temperature is higher than the temperature of the liquid electrolyte cell 1, the liquid electrolyte cell 1 is prone to safety problems, such as spontaneous combustion or explosion, etc. The connection of the liquid electrolyte cell 1 only uses the energy stored in the solid electrolyte cell 2 to output electric energy to the outside.

Fig. 5 is another structural schematic diagram of the embodiment of the battery system provided by the embodiment of the present invention. As shown in Fig. 4, the battery system provided by the embodiment of the present invention may further include a battery management unit 14, a temperature Management unit 15 and power unit 16.

Wherein, the battery management unit 14 may include two components, a memory for storing data and instructions and a microprocessor for receiving and processing signals and controlling the battery 11 and the transfer switch 13. Therefore, the battery management unit 14 and the battery 11 connections. Specifically, the battery management unit 14 can monitor the working states of the liquid electrolyte cell 1 and the solid electrolyte cell 2 in the battery 11, such as the terminal voltage, charge and discharge current, and accurately estimate the state of charge of the battery 11 to ensure that the battery 11 The state of charge of the liquid electrolyte cell 1 and the solid electrolyte cell 2 can be within a reasonable range to prevent damage to the battery 11 due to overcharging or overdischarging. In addition, in the embodiment of the present invention, the battery management unit 11 can control the liquid electrolyte cell 1 and the solid electrolyte cell 2 independently or simultaneously.

The temperature management unit 15 may include two components, namely a memory and a microprocessor, and the temperature management unit 15 is connected to the battery 11 . Specifically, the temperature management unit 15 can be connected to the liquid electrolyte cell 1 and the solid electrolyte cell 2 respectively, and the temperature management unit 15 can control the temperature of the liquid electrolyte cell 1 and the temperature of the solid electrolyte cell 2 respectively, and the controlled The way can be to heat or cool the liquid electrolyte cell 1 and the solid electrolyte cell 2, so that the temperature of the liquid electrolyte cell 1 and the temperature of the solid electrolyte cell 2 can be adjusted to a certain temperature range as required. In a specific implementation process, the temperature management unit 15 may include an active liquid cooling system or an active resistance heating system that can adjust the temperature of the battery.

In a specific implementation process, the power unit 16 may be an engine or a drive motor, and the power unit 16 is connected to the transfer switch 13 . The power unit is used to use the electric energy provided by the battery 11 to provide power to other devices.

The battery system provided by the embodiment of the present invention detects the temperature of the solid electrolyte cell 2 through the temperature sensor 12, and adjusts the way the battery system outputs electric energy to the outside by using the switch 13 according to the temperature of the solid electrolyte cell 2, so as to achieve the above Compared with the battery system with only one liquid electrolyte cell 1, the battery with two kinds of batteries can have a higher energy density effect, and at the same time improve the flexibility of the battery system and strengthen the safety performance of the battery system. Effect, in addition, the heat is used to heat the solid electrolyte, which improves the energy utilization rate and solves the problem of low energy density of batteries using a single liquid electrolyte lithium-ion battery cell in the prior art.

The battery system provided by the embodiments of the present invention can be applied to electric vehicles, but is not limited to the application in electric vehicles.

Embodiment three

Fig. 6 is a flow chart of an embodiment of the battery usage method provided by the embodiment of the present invention. As shown in Fig. 6, the battery usage method provided by the embodiment of the present invention can be applied to the battery system in the second embodiment, and may specifically include the following step:

501. Use a temperature sensor to detect the temperature of the solid electrolyte cell.

502. Determine the temperature range of the solid electrolyte cell. If the temperature of the solid electrolyte cell is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, perform step 503. If the temperature of the solid electrolyte cell is greater than the second temperature threshold , and less than or equal to the third temperature threshold, perform step 504, and if the temperature of the solid electrolyte cell is greater than the third temperature threshold, and less than or equal to the fourth temperature threshold, perform step 505.

It should be noted that, in the embodiment of the present invention, the fourth temperature threshold is greater than the third temperature threshold, the third temperature threshold is greater than the second temperature threshold, and the second temperature threshold is greater than the first temperature threshold.

For batteries used in different occasions, the composition and structure of the batteries will be adjusted according to the corresponding needs. Therefore, for different batteries, the first threshold, the second threshold, the third threshold and the fourth threshold, according to the battery properties to set. In a specific implementation process, the first temperature threshold is -40°C±5, the second temperature threshold is 40°C±5, the third temperature threshold is 60°C±5, and the fourth temperature threshold is 120°C±10.

503. The transfer switch turns on the liquid electrolyte cell, and the liquid electrolyte cell is used for power supply.

504. The transfer switch turns on the solid electrolyte cell and the liquid electrolyte cell, and uses the solid electrolyte cell and the liquid electrolyte cell to supply power at the same time.

505. The changeover switch is disconnected from the liquid electrolyte cell, and the solid electrolyte cell is used for power supply.

Fig. 7 is another flow chart of the embodiment of the battery usage method provided by the embodiment of the present invention. As shown in Fig. 7, the battery usage method provided by the embodiment of the present invention may further include the following steps on the basis of the foregoing content:

506. Send the detected temperature of the solid electrolyte cell to the battery management unit.

It can be understood that in the embodiment of the present invention, the battery management unit can judge the temperature range of the solid electrolyte cell, and then send different instructions to the switch according to the different temperature ranges of the solid electrolyte cell. Specifically, if the temperature of the solid electrolyte cell is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, perform step 507, if the temperature of the solid electrolyte cell is greater than the second temperature threshold and less than or equal to the second temperature threshold Three temperature thresholds, execute step 508, if the temperature of the solid electrolyte cell is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, execute step 509.

507. Receive a first instruction sent by the battery management unit.

The switch is made to turn on the liquid electrolyte cell according to the first instruction sent by the battery management unit, and the liquid electrolyte cell is used for power supply.

508. Receive a second instruction sent by the battery management unit.

The switch is made to turn on the solid electrolyte cell and the liquid electrolyte cell according to the second instruction sent by the battery management unit, and the solid electrolyte cell and the liquid electrolyte cell are used to supply power at the same time.

509. Receive a third instruction sent by the battery management unit.

The transfer switch is disconnected from the liquid electrolyte cell according to the third instruction sent by the battery management unit, and the solid electrolyte cell is used for power supply. The method of using the battery provided by the embodiment of the present invention detects the temperature of the solid-state electrolyte cell through the temperature sensor, and adjusts the battery system to output electric energy to the outside according to the temperature of the solid-state electrolyte cell. The battery of the core can have a higher energy density effect than the battery system with only one liquid electrolyte cell 1. In addition, the liquid electrolyte cell will generate heat during the discharge process, and the heat can be used for The heating of the solid-state electrolyte cell improves the energy utilization rate, and solves the problem of low energy density of batteries using a single liquid electrolyte lithium-ion cell in the prior art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (16)

1. a kind of battery, which is characterized in that including:Liquid electrolyte battery core and solid electrolyte battery core;The liquid electrolyte Battery core can carry out heat transfer with the solid electrolyte battery core.

2. battery according to claim 1, which is characterized in that the liquid electrolyte battery core and solid electrolyte electricity Core contacts, alternatively, being connected by heat conducting pipe between the liquid electrolyte battery core and the solid electrolyte battery core.

3. battery according to claim 1, which is characterized in that the liquid electrolyte battery core have it is N number of, N be more than or Integer equal to 2;The solid electrolyte battery core has N number of, and the N is integer more than or equal to 2;

The liquid electrolyte battery core of specified quantity and the solid electrolyte battery core interval of specified quantity are arranged.

4. battery according to claim 1, which is characterized in that the liquid electrolyte battery core have it is N number of, N be more than or Integer equal to 2;The solid electrolyte battery core has 1;

The solid electrolyte battery core is wrapped in the side wall of the liquid electrolyte battery core, alternatively,

The solid electrolyte battery core is wrapped in the side wall of the liquid electrolyte battery core with " snakelike ", by the liquid electrolyte Battery core is spaced apart according to specified quantity.

5. battery according to any one of claims 1 to 4, which is characterized in that the liquid electrolyte battery core is cobalt acid One kind in lithium cell, lithium nickelate battery core, mangaic acid lithium cell, LiFePO4 battery core and nickle cobalt lithium manganate battery core.

6. battery according to any one of claims 1 to 4, which is characterized in that the solid electrolyte battery core is polymerization Object solid lithium ion battery core, the polymer solid lithium-ion electric core by polyether system, polyacrylonitrile, polymethacrylates, One or more of composition matrixes in polyvinylidene fluoride, makrolon, polysilane, polystyrene and its block polymer.

7. a kind of battery system, which is characterized in that including:Temperature sensor, change-over switch and such as claim 1~6 are any Battery described in;

The change-over switch respectively in the battery liquid electrolyte battery core and solid electrolyte battery core connect;

The temperature sensor is connect with the solid electrolyte battery core and change-over switch respectively.

8. battery system according to claim 7, which is characterized in that the battery system further includes:Battery management unit;

The battery management unit is connect with the battery.

9. battery system according to claim 7, which is characterized in that the battery system further includes:Temperature management unit;

The temperature management unit is connect with the battery.

10. the system according to any one of claim 7~9, which is characterized in that the battery system further includes:Power Unit;

The power unit is connect with the change-over switch.

11. a kind of battery application method, applied to the battery for including solid electrolyte battery core and liquid electrolyte battery core, feature It is, the method includes:

Temperature in use sensor detects the temperature of solid electrolyte battery core;

If the temperature of solid electrolyte battery core is more than or equal to the first temperature threshold and is less than or equal to second temperature threshold value, The liquid electrolyte battery core is connected in change-over switch, is powered using the liquid electrolyte battery core;

If the temperature of the solid electrolyte battery core is more than second temperature threshold value, and is less than or equal to third temperature threshold, turn Solid electrolyte battery core described in switch conduction and the liquid electrolyte battery core are changed, the solid electrolyte battery core and institute are used It states liquid electrolyte battery core while powering;

If the temperature of the solid electrolyte battery core is more than third temperature threshold, and is less than or equal to the 4th temperature threshold, turn The connection of switch disconnection and the liquid electrolyte battery core is changed, the solid electrolyte battery core is used to power;

4th temperature threshold is more than the third temperature threshold, and the third temperature threshold is more than the second temperature threshold Value, the second temperature threshold value are more than first temperature threshold.

12. according to the method for claim 11, which is characterized in that detect solid electrolyte battery core in temperature in use sensor Temperature after, the method further includes:

The temperature of the solid electrolyte battery core detected is sent to battery management unit.

13. according to the method for claim 11, which is characterized in that the liquid electrolyte electricity is connected in the change-over switch Core, including:

Receive the first instruction that the battery management unit is sent;

The liquid electrolyte battery core is connected according to first instruction in the change-over switch.

14. according to the method for claim 11, which is characterized in that the solid electrolyte battery core is connected in the change-over switch And the liquid electrolyte battery core, including:

Receive the second instruction that the battery management unit is sent;

The liquid electrolyte battery core and the liquid electrolyte battery core is connected according to second instruction in the change-over switch.

15. according to the method for claim 11, which is characterized in that change-over switch disconnects and the liquid electrolyte battery core Connection, including:

Receive the third instruction that the battery management unit is sent;

The change-over switch disconnects the connection with the liquid electrolyte battery core according to third instruction.

16. the method according to any one of claim 11~15, which is characterized in that first temperature threshold be located at- Between 45 DEG C Dao -35 DEG C;

The second temperature threshold value is between 35 DEG C to 45 DEG C;

The third temperature threshold is between 55 DEG C to 65 DEG C;

4th temperature threshold is between 115 DEG C to 125 DEG C.