Automatic pressure regulation device for measuring battery cell pressure requirements

Abstract

To provide an automatic pressure regulation device that measures the battery cell pressure requirements of various solid-state battery cells during charging and discharging operations.SOLUTION: An automatic pressure regulation device 100 includes a linear force output module 2, a press module 3, an elastic module 4 having a pressure sensing unit 44, and an electrical measurement module connected to the linear force output module. A battery cell is placed on the press module, and the electrical performance output of the battery cell relative to the pressure value generated by the output module is measured and optimized by the pressure sensing unit and the electrical measurement module to determine an optimal pressure value of the battery cell.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a battery cell, and more particularly to an automatic pressure adjustment device for measuring the pressure requirement of a battery cell.

Background Art

[0002] Currently, liquid lithium batteries are the mainstream batteries used by major electric vehicle manufacturers around the world. At present, the energy density of liquid lithium batteries is approaching the limit of lithium battery technology. Furthermore, there are also safety concerns with liquid lithium batteries.

[0003] In order to provide a battery with high safety and functional requirements, solid lithium batteries have emerged. Solid lithium batteries can solve two fundamental drawbacks in the battery industry, namely safety problems and energy density problems. Solid batteries use solid electrolytes to avoid leakage problems. And the solid electrolyte gives a strong blocking effect to the positive electrode and the negative electrode, so the generation of lithium dendrites and the possibility of short circuit are reduced, and the safety is naturally enhanced. Furthermore, considering the safety of solid batteries, materials with high energy density can be used for the positive electrode and the negative electrode, so the energy density may exceed that of lithium ternary batteries.

[0004] However, there are also limitations to solid lithium batteries. Generally, solid lithium batteries are not suitable for rapid charging and discharging. In order to overcome the characteristics of general solid batteries that are not suitable for high-speed charging and discharging, theoretically, it is necessary to increase the charging and discharging speed of solid batteries by pressurizing the battery unit to a certain extent during assembly.

[0005] However, since there are many types of solid - state battery cells, different degrees of pressure are required for each battery cell depending on the types and proportions of the materials contained. Currently, there is no automatic device that can measure by applying pressure to different battery cells.

Summary of the Invention

Problems to be Solved by the Invention

[0006] Therefore, in order to solve various problems of battery cells, the present invention provides an automatic pressure - adjusting device for measuring the pressure requirements of battery cells.

Means for Solving the Problems

[0007] To achieve the above - mentioned object and other objects, the present invention provides an automatic pressure - adjusting device for measuring the pressure requirements of battery cells. This device includes a linear - force output module, a press module, and an elastic module. The linear - force output module is used to generate a linear force. The press module includes a press plate and guide rails. The guide rails are parallel to the direction of the linear force of the linear - force output module, and the press plate moves along the guide rails by the linear force of the linear - force output module. The elastic module includes a first plate, a second plate, at least one elastic member, and at least one pressure - sensing unit. The first plate and the press plate are configured to sandwich a load space. A plurality of the elastic members are arranged between the first plate and the second plate. The compression direction of the plurality of elastic members is the direction of the linear force, and the at least one pressure - sensing unit is arranged on one side of the second plate.

[0008] In an embodiment of the present invention, the automatic pressure - adjusting device for measuring the pressure requirements of battery cells further includes a control module connected to the linear - force output module, and the control module controls the output of the linear force of the linear - force output module.

[0009] In an embodiment of the present invention, the control module is connected to the at least one pressure sensing unit, and the at least one pressure sensing unit transmits a pressure value signal to the control module.

[0010] In an embodiment of the present invention, the automatic pressure adjustment device for measuring the pressurization requirement of a battery cell further includes an electrical measurement module connected to the control module, and the control module determines an optimal pressure value of the battery cell based on the pressure value signal transmitted by the at least one pressure sensing unit and the electrical data transmitted by the electrical measurement module.

[0011] In an embodiment of the present invention, the linear force output module includes a force generation unit and a force transmission unit. The force generation unit generates a rotational force and converts the rotational force into a linear force to transmit it to the press plate.

[0012] In an embodiment of the present invention, the force generation unit is a motor, and the force transmission unit includes a gear set and a screw shaft. The gear set is driven by the output shaft of the motor, and the screw shaft is connected to the gear set and the press plate.

[0013] In an embodiment of the present invention, the gear set includes a speed reducer and at least one spur gear. The speed reducer is arranged on the output shaft, and the at least one spur gear is driven by the screw shaft and connected to the speed reducer.

[0014] In an embodiment of the present invention, the speed reducer is a harmonic gear, the harmonic gear is driven by the output shaft, and the at least one spur gear meshes with the harmonic gear.

[0015] In an embodiment of the present invention, the automatic pressure adjustment device for measuring the pressure requirement of a battery cell further includes a base, and the at least one pressure sensing unit is disposed between the second plate and the base.

[0016] In an embodiment of the present invention, the press module further includes at least one guide portion, and the at least one guide portion penetrates the press plate.

Advantages of the Invention

[0017] Accordingly, the automatic pressure adjustment device for measuring the pressure requirement of a battery cell according to the present invention can provide a device capable of measuring the values of the pressure requirements of various solid battery cells during charging and discharging operations. The elastic member can accurately control pressure or tension because it changes the output of the linear force output module to control pressure or tension.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0019] To facilitate the understanding of the present invention, specific embodiments are provided together with detailed descriptions and the accompanying drawings. Those skilled in the art can understand the objectives, features, and effects of the present invention based on the content disclosed in the specification. It is obvious that the present invention can also be implemented or applied by other embodiments, and without departing from the spirit of the present invention, the details of the specification can also be improved and changed based on various views and applications. In the following embodiments, the related technical content of the present invention will be described in more detail, but the disclosed content does not limit the present invention. The description is as follows.

[0020] As shown in FIG. 1, an automatic pressure adjustment device 100 for measuring the pressure requirement of a battery cell according to an embodiment of the present invention includes a linear force output module 2, a press module 3, and an elastic module 4.

[0021] The linear force output module 2 is used to generate a linear force. The linear force output module 2 is a combination of a motor and a screw shaft, or a mechanism such as a hydraulic cylinder. These mechanisms that provide reciprocating linear motion force can be used as the linear force output module 2 of the present invention.

[0022] The press module 3 includes a press plate 31 and guide rails 32. The guide rails 32 are parallel to the direction of the linear force of the linear force output module 2 (indicated by the arrow in FIG. 1), and the press plate 31 is moved along the guide rails 32 by the linear force of the linear force output module 2. In this embodiment, two guide rails 32 are respectively arranged on both sides of the press plate 31. The present invention does not limit the number of guide rails 32. More guide rails 32 may be arranged, or only one guide rail 32 may be arranged.

[0023] The elastic module 4 includes a first plate 41, a second plate 42, at least one elastic member 43, and at least one pressure sensing unit 44. The first plate 41 and the press plate 31 are configured with the load space S therebetween, and the size of the load space S is variable. The at least one elastic member 43 is disposed between the first plate 41 and the second plate 42, and the compression direction of the at least one elastic member 43 is along the direction of the linear force. The elastic member 43 is, for example, a spring, but the present invention is not limited thereto. A leaf spring, rubber, sponge, or other elastic object can be used as the elastic member 43 of the present invention. The number of the elastic members 43 may be plural, and by dispersedly arranging them between the first plate 41 and the second plate 42, the force from the linear force output module 2 can be dispersed.

[0024] The at least one pressure sensing unit 44 is disposed on one side of the second plate 42. The at least one pressure sensing unit 44 and the at least one elastic member 43 are respectively disposed on the opposite side of the second plate 42. The at least one pressure sensing unit 44 is used to detect pressure. The pressure sensing unit 44 is a pressure gauge or a pressure sensor or the like. The number of the pressure sensing units 44 may be plural, and by dispersedly arranging them on the second plate 42, more accurate measurement values can be obtained.

[0025] Next, a method of using the automatic pressure adjustment device 100 for measuring the pressure requirement of the battery cell according to the present invention will be described.

[0026] First, the battery cell is installed in the load space S, that is, between the press plate 31 and the first plate 41.

[0027] Next, the linear force output module 2 moves the press plate 31 relative to the battery cell by generating a linear force. The linear force output module 2 can be set to generate a force value or a pressure value. The setting range of the optimal pressure value is 1 to 10 kgf / cm 2 and the resolution and accuracy are 0.1 kgf / cm 2 or more.

[0028] The pressure applied to the battery cell is detected by the pressure sensing unit 44, and at the same time, the electrical performance of the battery cell is measured. By applying various pressures to obtain the optimal electrical performance of the battery cell, the final pressure requirement of the battery cell is determined.

[0029] During the measurement process, the elastic member 43 stably contacts the battery cell with the press plate 31 by flexibly changing the pressure applied to the battery cell. Through the elastic member 43, the pressure applied to the battery cell can be preferably controlled between 0.9 times and 1.1 times the pressure output by the linear force output module 2.

[0030] In summary, the automatic pressure adjustment device 100 for measuring the pressure requirement of the battery cell according to the present invention provides a device capable of measuring the value of the pressure requirement according to various solid battery cells during charging and discharging operations. The elastic member 43 can accurately control the pressure or tension because it changes the output of the linear force output module 2 to control the pressure or tension.

[0031] In this embodiment, as shown in FIG. 2, the automatic pressure adjustment device 100 for measuring the pressure requirement of the battery cell further includes a control module 5 connected to the linear force output module 2. The control module 5 is, for example, a control chip or a control circuit with a logical judgment function, and can be integrated into a computer or a terminal. The control module 5 controls the output of the linear force of the linear force output module 2. When the area of the press plate 31 that applies pressure to the battery cell is preset or known in advance, the output of the linear force of the linear force output module 2 can be controlled.

[0032] Furthermore, in this embodiment, the control module 5 is connected to the at least one pressure sensing unit 44. The at least one pressure sensing unit 44 transmits a pressure value signal to the control module. The pressure value signal includes the pressure value detected by the pressure sensing unit 44. The control module 5 can further adjust the output of the linear force output module 2 according to the pressure value detected by the pressure sensing unit 44.

[0033] Furthermore, in this embodiment, the automatic pressure adjustment device 100 for measuring the pressure requirement of the battery cell further includes an electrical measurement module 6 connected to the control module 5. The electrical measurement module 6 can detect the electrical performance of the battery cell, such as the voltage and current of the battery cell. Preferably, the components for charging the battery cell and the components for discharging the battery cell are integrated into the electrical measurement module 6. The control module 5 can determine the optimal pressure value of the battery cell based on the pressure value signal transmitted by the at least one pressure sensing unit 44 and the electrical data transmitted by the electrical measurement module 6.

[0034] Furthermore, in this embodiment, as shown in FIG. 1, the linear force output module 2 includes a force generation unit 21 and a force transmission unit 22. The force generation unit 21 generates a rotational force, and the force transmission unit 22 converts the rotational force into a linear force and transmits it to the press plate 31.

[0035] In this embodiment, the force generation unit 21 is a motor. The motor 21 generates a rotational force. The motor 21 is a motor such as a servo motor, and the output torque can be controlled by an electrical signal. However, the present invention is not limited thereto. The force transmission unit 22 includes a gear set 221 and a screw shaft 222. The gear set 221 is driven by the output shaft 211 of the motor 21, and the screw shaft 222 is connected to the gear set 221 and the press plate 31.

[0036] In this embodiment, the gear set 221 includes a speed reducer and at least one spur gear 221b. The speed reducer is disposed on the output shaft 211, and the at least one spur gear 221b is driven by the screw shaft 222 and connected to the speed reducer. The quantity of the spur gears 221b corresponds to the quantity of the screw shafts 222. The speed reducer may be any reduction device that applies various mechanical principles to reduce the speed of the motor 21.

[0037] In this embodiment, the speed reducer is a harmonic gear 221a. The harmonic gear 221a is driven by the output shaft 211, and the at least one spur gear 221b meshes with the harmonic gear 221a directly or indirectly.

[0038] In this embodiment, the harmonic gear 221a meshes with the spur gear 221b indirectly through another spur gear 221c. However, in other embodiments, the harmonic gear 221a can mesh with the spur gear 221b directly without the spur gear 221c. The actual configuration and application of the gear set 221 can be changed and adjusted as needed.

[0039] Furthermore, in the present embodiment, the automatic pressure adjustment device 100 for measuring the pressure requirement of the battery cell further includes a base 1. The at least one pressure sensing unit 44 is disposed between the second plate 42 and the base 1. A plurality of through holes 11 for screwing other components such as the pressure sensing unit 44 are formed in the base 1.

[0040] In the present embodiment, the press module 3 further includes at least one guide portion 33, and the at least one guide portion 33 penetrates the press plate 31. The at least one guide portion 33 is used to assist the stable movement of the press plate 31.

[0041] The present invention has been described by way of specific embodiments, but those skilled in the art should understand that the above description is merely an embodiment of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that the scope of the present invention is intended to include all modifications and substitutions that fall within the meaning and equivalent scope of the embodiments of the present invention. Therefore, the scope of the present invention is defined by the claims.

Explanation of Reference Numerals

[0042] 1 Base 11 Through hole 2 Linear force output module 21 Force generation unit (motor) 22 Force transmission unit 3 Press module 31 Press plate 32 Guide rail 33 Guide portion 4 Elastic module 41 First plate 42 Second plate 43 Elastic member 44 Pressure sensing unit Automatic pressure adjustment device for measuring the pressure requirement of 100 battery cells 221 Gear set 221a Harmonic drive 221b Spur gear 221c Spur gear 222 Screw shaft S Load space

Claims

1. A linear force output module used to generate a linear force, a pressing module, and an elastic module, wherein the pressing module includes a pressing plate and guide rails, the guide rails are parallel to the direction of the linear force of the linear force output module, the pressing plate is moved along the guide rails by the linear force of the linear force output module, the elastic module includes a first plate, a second plate, at least one elastic member, and at least one pressure sensing unit, the first plate and the pressing plate are configured to sandwich a load space, a plurality of the elastic members are arranged between the first plate and the second plate, the compression direction of the plurality of elastic members is along the direction of the linear force, and the at least one pressure sensing unit is arranged on one side of the second plate, An automatic pressure adjustment device for measuring the pressurization requirement of a battery cell.

2. further including a control module connected to the linear force output module, the control module controls the output of the linear force of the linear force output module, An automatic pressure adjustment device for measuring the pressurization requirement of a battery cell according to Claim 1.

3. the control module is connected to the at least one pressure sensing unit, the at least one pressure sensing unit transmits a pressure value signal to the control module, An automatic pressure adjustment device for measuring the pressurization requirement of a battery cell according to Claim 2.

4. further including an electrical measurement module connected to the control module, the control module determines the optimal pressurization value of the battery cell based on the pressure value signal transmitted by the at least one pressure sensing unit and the electrical data transmitted by the electrical measurement module, An automatic pressure adjustment device for measuring the pressurization requirement of a battery cell according to Claim 3.

5. the linear force output module includes a force generation unit and a force transmission unit, the force generation unit generates a rotational force and converts the rotational force into a linear force and transmits it to the pressing plate, An automatic pressure adjustment device for measuring the pressurization requirement of a battery cell according to Claim 1.

6. the force generation unit is a motor, The force transmission unit includes a gear set and a screw shaft, the gear set is driven by the output shaft of the motor, the screw shaft is connected to the gear set and the press plate, An automatic pressure adjustment device for measuring the pressure requirement of the battery cell according to claim 5.

7. The gear set includes a speed reducer and at least one spur gear, the speed reducer is arranged on the output shaft, the at least one spur gear is driven by the screw shaft and connected to the speed reducer, An automatic pressure adjustment device for measuring the pressure requirement of the battery cell according to claim 6.

8. The speed reducer is a harmonic gear, the harmonic gear is driven by the output shaft, the at least one spur gear meshes with the harmonic gear, An automatic pressure adjustment device for measuring the pressure requirement of the battery cell according to claim 7.

9. Further includes a base, the at least one pressure sensing unit is arranged between the second plate and the base, An automatic pressure adjustment device for measuring the pressure requirement of the battery cell according to claim 1.

10. The press module further includes at least one guide portion, the at least one guide portion penetrates the press plate, An automatic pressure adjustment device for measuring the pressure requirement of the battery cell according to claim 1.

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