Automatic pressure regulator for measuring battery cell pressure requirements

Abstract

An automatic pressure regulation device is provided that measures the battery cell pressure requirements of various solid-state battery cells during charging and discharging operations. The automatic pressure adjusting 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.

Description

[Technical field]

[0001] The present invention relates to a battery cell, and more particularly to an automatic pressure regulator for measuring the pressure demand of a battery cell. [Background technology]

[0002] Currently, liquid lithium batteries are the mainstream battery used by major electric vehicle manufacturers around the world. Currently, the energy density of liquid lithium batteries is approaching the limit of lithium battery technology. In addition, liquid lithium batteries also have safety concerns.

[0003] In order to provide batteries with high safety and functional requirements, solid-state lithium batteries have emerged. Solid-state lithium batteries can solve two fundamental shortcomings in the battery industry: safety issues and energy density issues. Solid-state batteries use solid electrolytes to avoid leakage issues. And the solid electrolyte provides a strong barrier effect to the positive and negative electrodes, which reduces the possibility of lithium dendrites and short circuits, naturally improving safety. In addition, considering the safety of solid-state batteries, high-energy density materials can be used for the positive and negative electrodes, so the energy density can exceed that of lithium ternary batteries.

[0004] However, solid-state lithium batteries also have limitations. In general, solid-state lithium batteries are not suitable for rapid charging and discharging. In order to overcome the characteristics of general solid-state batteries that are not suitable for fast charging and discharging, it is theoretically necessary to increase the charging and discharging speed of solid-state 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 ratios of materials contained in the battery cell, and currently there is no automated device that can pressurize and measure different battery cells. Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, in order to solve various problems of the battery cell, the present invention provides an automatic pressure adjusting device for measuring the pressure requirement of the battery cell. [Means for solving the problem]

[0007] In order to achieve the above and other objects, the present invention provides an automatic pressure adjustment device for measuring the pressure demand of a battery cell. The 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 a guide rail. The guide rail is parallel to the direction of the linear force of the linear force output module, and the press plate moves along the guide rail 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 with a load space therebetween. A plurality of the elastic members are disposed between the first plate and the second plate. The compression direction of the plurality of the elastic members is the direction of the linear force, and the at least one pressure sensing unit is disposed on one side of the second plate.

[0008] In an embodiment of the present invention, the automatic pressurization regulating device for measuring the pressurization demand of a battery cell further includes a control module connected to the linear force output module, and the control module controls the linear force output of the linear force output module.

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

[0010] In an embodiment of the present invention, the automatic pressure regulating device for measuring the pressure 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 generating unit and a force transmitting unit, where the force generating 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 generating unit is a motor, and the force transmitting unit includes a gear set and a screw shaft, the gear set is driven by an 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 reducer and at least one spur gear, the reducer is disposed on the output shaft, and the at least one spur gear is driven by the screw shaft and connected to the reducer.

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

[0015] In an embodiment of the present invention, the automatic pressure regulating 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, the at least one guide portion penetrating the press plate. Effect of the Invention

[0017] According to the present invention, an automatic pressure adjusting device for measuring the pressure demand of a battery cell can provide a device capable of measuring the pressure demand value of various solid-state battery cells during charging and discharging operations. The elastic member controls the pressure or tension by changing the output of the linear force output module, so that the pressure or tension can be accurately controlled. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of an automatic pressure regulation device for measuring the pressure demand of a battery cell according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a block diagram of an automatic pressurization regulator for measuring the pressurization demand of a battery cell according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0020] As shown in FIG. 1, an automatic pressure adjusting device 100 for measuring the pressure demand of a battery cell according to an embodiment of the present invention includes a linear force output module 2, a pressing 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 mechanism such as a combination of a motor and a screw shaft, or a hydraulic cylinder. These mechanisms that provide a reciprocating linear 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 a guide rail 32. The guide rail 32 is parallel to the direction of the linear force of the linear force output module 2 (shown by an arrow in FIG. 1), and the press plate 31 is moved along the guide rail 32 by the linear force of the linear force output module 2. In this embodiment, two guide rails 32 are disposed on both sides of the press plate 31, respectively. The present invention does not limit the number of guide rails 32. More or only one guide rail 32 may be disposed.

[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 to sandwich a load space S, 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. Leaf springs, rubber, sponge, or other elastic objects can be used as the elastic member 43 of this invention. The elastic members 43 may be a plurality of pieces, and by distributing them between the first plate 41 and the second plate 42, the force from the linear force output module 2 can be distributed.

[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 disposed on opposite sides 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, a pressure sensor, or the like. The pressure sensing units 44 may be a plurality of units, and by distributing them on the second plate 42, more accurate measurement values ​​can be obtained.

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

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

[0027] Then, the linear force output module 2 generates a linear force to move the press plate 31 relative to the battery cell. The linear force output module 2 can be set to generate a force value or a pressure value. The optimal pressure value setting range is 1-10 kgf / cm. 2 and the resolution and accuracy are 0.1 kgf / cm 2 That's all.

[0028] The pressure applied to the battery cell is detected by the pressure sensing unit 44, and the electrical performance of the battery cell is measured at the same time. The optimum electrical performance of the battery cell is obtained by applying different pressures, and finally the pressurization requirement of the battery cell is determined.

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

[0030] In summary, the automatic pressure adjusting device 100 for measuring the pressure demand of a battery cell according to the present invention provides a device that can measure the value of the pressure demand according to various solid-state battery cells during charging and discharging operations. The elastic member 43 controls the pressure or tension by changing the output of the linear force output module 2, so that the pressure or tension can be accurately controlled.

[0031] In this embodiment, as shown in Fig. 2, the automatic pressurizing regulating device 100 for measuring the pressurizing demand of a 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 logic judgment function, which can be integrated into a computer or a terminal. The control module 5 controls the linear force output 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, the linear force output of the linear force output module 2 can be controlled.

[0032] Further, 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 a 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 pressurization regulating device 100 for measuring the pressurization 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, components for charging the battery cell and components for discharging the battery cell are integrated into the electrical measurement module 6. The control module 5 can determine an optimal pressure value of the battery cell based on the pressure value signal sent by the at least one pressure sensing unit 44 and the electrical data sent by the electrical measurement module 6.

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

[0035] In this embodiment, the force generating 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 electric signal. However, the present invention is not limited thereto. The force transmitting 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 reducer and at least one spur gear 221b. The 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 reducer. The number of the spur gears 221b corresponds to the number of the screw shafts 222. The reducer may be any reduction device that applies various mechanical principles to reduce the speed of the motor 21.

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

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

[0039] Furthermore, in this embodiment, the automatic pressure adjusting device 100 for measuring the pressure demand of a 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. The base 1 is formed with a number of through holes 11 for screwing other components such as the pressure sensing unit 44.

[0040] In this embodiment, the press module 3 further includes at least one guide portion 33, which penetrates the press plate 31. The at least one guide portion 33 is used to help the press plate 31 move stably.

[0041] Although the present invention has been described by specific embodiments, those skilled in the art should understand that the above description is merely an embodiment of the present invention and should not be interpreted 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 replacements that fall within the meaning and equivalent range of the embodiments of the present invention. Therefore, the scope of the present invention is defined by the claims. [Explanation of symbols]

[0042] 1 Base 11 Through hole 2 Linear Force Output Module 21 Force generating unit (motor) 22 Force transmission unit 3 Press Module 31 Press Plate 32 Guide rail 33 Guide section 4 Elasticity Module 41 First Plate 42 Second Plate 43 Elastic Members 44 Pressure Sensing Unit 100 Automatic pressure regulator for measuring pressure requirements of battery cells 221 Gear Set 221a Strain gear 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 press module; an elastic module; The press module includes a press plate and a guide rail; the guide rail is parallel to a linear force direction of the linear force output module; The press plate is moved along the guide rail 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, The plurality of elastic members are disposed between the first plate and the second plate, the compression direction of the plurality of elastic members is along a direction of a linear force, and the at least one pressure sensing unit is disposed on one side of the second plate. An automatic pressure regulator for measuring the pressure requirements of battery cells.

2. a control module connected to the linear force output module; the control module controls the linear force output of the linear force output module.

2. The automatic pressure regulation device for measuring the pressure demand 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; 3. The automatic pressure regulation device for measuring the pressure demand of a battery cell according to claim 2.

4. further comprising an electrical measurement module connected to the control module; The control module determines an 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.

4. The automatic pressure regulation device for measuring the pressure demand of a battery cell according to claim 3.

5. the linear force output module includes a force generating unit and a force transmitting unit; The force generating unit generates a rotational force and converts the rotational force into a linear force to transmit it to the press plate.

2. The automatic pressure regulation device for measuring the pressure demand of a battery cell according to claim 1.

6. the force generating unit is a motor; The force transmission unit includes a gear set and a screw shaft; the gear set is driven by an output shaft of the motor; The screw shaft is connected to the gear set and the press plate.

6. An automatic pressure regulation device for measuring pressure demand of a battery cell according to claim 5.

7. the gear set includes a reducer and at least one spur gear; The reducer is disposed on the output shaft, The at least one spur gear is driven by the screw shaft and is connected to the reducer.

7. An automatic pressure regulation device for measuring pressure demand of a battery cell according to claim 6.

8. The reducer is a strain wave gear, The strain wave gear is driven by the output shaft, The at least one spur gear meshes with the strain wave gear.

8. The automatic pressure regulation device for measuring the pressure demand of a battery cell according to claim 7.

9. Further comprising a base, the at least one pressure sensing unit is disposed between the second plate and the base; 2. The automatic pressure regulation device for measuring the pressure demand of a 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.

2. The automatic pressure regulation device for measuring the pressure demand of a battery cell according to claim 1.

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