CN218847185U - Battery expansion displacement measurement system - Google Patents
Battery expansion displacement measurement system Download PDFInfo
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- CN218847185U CN218847185U CN202223039149.XU CN202223039149U CN218847185U CN 218847185 U CN218847185 U CN 218847185U CN 202223039149 U CN202223039149 U CN 202223039149U CN 218847185 U CN218847185 U CN 218847185U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a battery expansion displacement measuring system, which comprises a force measuring mechanism and a control unit; the measuring mechanism comprises a fixing plate, a mounting plate, a pressing plate, a driving mechanism, a pressure sensor and a displacement sensor; the fixing plate and the mounting plate are oppositely arranged at intervals and are relatively fixed, and one side surface of the fixing plate facing the mounting plate is used for fixing a battery; the pressure plate is arranged between the fixed plate and the mounting plate; the driving mechanism is arranged on the mounting plate, connected to the pressing plate and used for driving the pressing plate to move towards or back to the fixing plate; the pressure sensor is arranged between the output end of the driving mechanism and the pressure plate; the displacement sensor is arranged between the mounting plate and the pressing plate; the control unit is configured to: and judging whether the clamping of the pressing plate and the fixing plate on the battery meets constant pressure or not according to the pressure information, controlling the driving mechanism according to the constant pressure, and acquiring thickness change information of the battery in the charging and discharging process according to the displacement information.
Description
Technical Field
The utility model relates to a battery detection and analog design technical field especially relate to a battery expansion displacement measurement system.
Background
In the design process of the battery, the expansion deformation of the battery generated in the charging and discharging process needs to be tested so as to seek the optimal external pressure corresponding to the battery expansion range meeting the setting, and realize the balance of stable grouping of the battery and meeting the requirement of the expansion deformation. Because the direct influence of battery expansion is represented by the change of the battery thickness, the thickness expansion of the battery in the whole life cycle needs to be ensured to be within a certain range in consideration of the safety, reliability and service life of the battery, the magnitude of the constraint force adopted during the mold stripping assembly needs to be calculated in advance, and the quality of the constraint force design can directly relate to the performance and the service life of the battery. However, the conventional measurement method is difficult to eliminate the interference of other factors except the battery, and is difficult to truly and accurately simulate the external pressure applied to the battery in the test process, so that the reference data provided by the test is influenced, and the accuracy of the obtained optimal external pressure of the battery is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes above-mentioned prior art's at least defect, provides a battery inflation displacement measurement system that can guarantee higher accuracy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to an aspect of the present invention, a battery expansion displacement measurement system is provided, which includes a force measuring mechanism and a control unit; the measuring mechanism comprises a fixing plate, an installation plate, a pressing plate, a driving mechanism, a pressure sensor and a displacement sensor; the fixing plate and the mounting plate are oppositely arranged at intervals and are relatively fixed, and one side surface of the fixing plate facing the mounting plate is used for fixing a battery; the pressing plate is arranged between the fixing plate and the mounting plate; the driving mechanism is arranged on the mounting plate, connected to the pressure plate and used for driving the pressure plate to move towards or back to the fixing plate; the pressure sensor is arranged between the output end of the driving mechanism and the pressure plate and is used for acquiring pressure information at the position; the displacement sensor is arranged between the mounting plate and the pressing plate and used for collecting displacement information of the pressing plate along the movement direction; the control unit is connected to the drive mechanism, the pressure sensor, and the displacement sensor, respectively, and is configured to: and judging whether the clamping of the pressing plate and the fixing plate to the battery meets constant pressure or not according to the pressure information, controlling the driving mechanism according to the constant pressure, and acquiring thickness change information of the battery in the charging and discharging process according to the displacement information.
According to one embodiment of the present invention, the fixing plate is fixedly connected to the mounting plate via a plurality of guide posts, and the guide posts are spaced along the edges of the fixing plate and the mounting plate; the guide posts respectively penetrate through the pressure plate, so that the pressure plate moves along the guide direction of the guide posts.
According to the utility model discloses a wherein one of them embodiment, the clamp plate is provided with a plurality of bearing housing, a plurality of bearing housing overlap respectively and locate many guide pillars.
According to one embodiment of the present invention, a first adapter plate is disposed at an edge of the mounting plate, a second adapter plate is disposed at an edge of the pressing plate, and the first adapter plate corresponds to the second adapter plate; the displacement sensor is fixed on the first adapter plate, and the output end of the displacement sensor is connected to the second adapter plate.
According to one of the embodiments of the present invention, wherein: the first transfer plate is provided with a first part and a second part which are connected in a bending mode, the first part is connected to the surface, facing to or away from the fixing plate, of the mounting plate, the second part is located on the edge of the mounting plate, and the displacement sensor is arranged on the second part; and/or the second adapter plate is provided with a third part and a fourth part which are connected in a bending mode, the third part is connected to the edge of the pressing plate, the fourth part faces the displacement sensor, and the output end of the displacement sensor is connected to the fourth part.
According to the utility model discloses an in one of them embodiment, the fixed plate orientation a side surface of mounting panel is provided with the support frame, the support frame is used for supporting the battery.
According to the utility model discloses a one of them embodiment, the support frame along height direction position adjustably set up in on the fixed plate.
According to the utility model discloses a one of them embodiment, the fixed plate orientation a side surface of mounting panel is provided with the stopper, the stopper is used for spacing the both sides of battery.
According to the utility model discloses an one of them embodiment, the stopper along the horizontal direction position set up adjustably in on the fixed plate.
According to one embodiment of the present invention, the driving mechanism comprises a cylinder, a solenoid valve and an electric proportional valve, the cylinder is connected with the solenoid valve via an air pipe, and the solenoid valve is connected with the electric proportional valve via an air pipe; wherein the control unit is respectively connected with the electromagnetic valve and the electric proportional valve.
According to one embodiment of the present invention, the control unit comprises a controller and a processor, the controller is respectively connected to the driving mechanism, the pressure sensor and the displacement sensor, and the processor is connected to the controller; wherein the controller is configured to collect and transmit the pressure information and displacement information to the processor; the processor is configured to judge whether the clamping of the pressing plate and the fixing plate to the battery meets constant pressure according to the pressure information, so as to generate a control instruction and send the control instruction to the controller, and the processor is further configured to acquire thickness change information of the battery in the charging and discharging process according to the displacement information.
According to the above technical scheme, the utility model provides a battery inflation displacement measurement system's advantage lies in with positive effect:
the utility model provides a battery inflation displacement measurement system can utilize pressure sensor to gather the pressure between actuating mechanism's the output and the clamp plate, realizes the real-time collection to the external pressure of battery promptly in the test procedure to supply the control unit to compare with the constant pressure who sets for in view of the above, make corresponding adjustment control to actuating mechanism in view of the above, thereby guarantee that the constant pressure who applys on the battery is unchangeable. Through the structure design, the utility model discloses can truly accurately simulate out the external pressure that the battery received, avoid the external factor to influence the reference data that the test provided for the best external pressure of battery with this acquisition has higher accuracy, calculates out the size of the required constraining force when the module assembly is assembled really accurately according to this, and then improves the performance and the life-span of battery.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a system schematic diagram of a battery expansion displacement measurement system according to an exemplary embodiment;
FIG. 2 is a schematic perspective view of the measuring mechanism shown in FIG. 1;
FIG. 3 is a schematic perspective view of another angle of the measuring mechanism shown in FIG. 2;
figures 4 and 5 are side views of the measuring mechanism shown in figure 2 in two different states, respectively;
FIG. 6 is a control flow diagram of the battery expansion displacement measurement system shown in FIG. 1;
fig. 7 is a flowchart illustrating a method of measuring an optimal external pressure of a battery according to an exemplary embodiment.
The reference numerals are illustrated below:
100. a measuring mechanism;
110. a fixing plate;
111. a guide post;
112. a support frame;
113. a limiting block;
120. mounting a plate;
121. a first transfer plate;
130. pressing a plate;
131. a second adapter plate;
132. a bearing housing;
141. a cylinder;
142. an electromagnetic valve;
143. an electric proportional valve;
144. an air tube;
150. a pressure sensor;
160. a displacement sensor;
1601. an output end;
210. a controller;
220. a processor;
A. a battery.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.
Referring to fig. 1, a system diagram of a battery expansion displacement measurement system according to the present invention is representatively illustrated. In this exemplary embodiment, the present invention provides a battery expansion displacement measurement system, which is described by taking a test design applied to a lithium ion battery as an example. It will be readily appreciated by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to adapt the inventive arrangements for testing other types of batteries, and still fall within the scope of the principles of the battery expansion displacement measurement system as set forth in the present application.
As shown in fig. 1, in an embodiment of the present invention, the battery expansion displacement measurement system provided by the present invention includes a force measuring mechanism and a control unit. Referring to fig. 2 to 5, fig. 2 representatively illustrates a schematic perspective view of the measurement mechanism 100 illustrated in fig. 1; a schematic perspective view of another angle of the measuring mechanism 100 is representatively illustrated in fig. 3; fig. 4 and 5 each representatively illustrate a side view of the measurement mechanism 100 in two different states, wherein the cell is not clamped by the pressure plate 130 of fig. 4 and the cell is clamped by the pressure plate 130 of fig. 5; a control flow diagram of the battery expansion displacement measurement system is representatively illustrated in fig. 6. The structure, connection mode and functional relationship of the main components of the battery expansion displacement measurement system according to the present invention will be described in detail below with reference to the above drawings.
As shown in fig. 1 to 5, in an embodiment of the present invention, the measuring mechanism 100 includes a fixing plate 110, a mounting plate 120, a pressing plate 130, a driving mechanism, a pressure sensor 150, and a displacement sensor 160. Specifically, the fixing plate 110 and the mounting plate 120 are oppositely disposed at an interval, and the fixing plate and the mounting plate are relatively fixed. A side surface of the fixing plate 110 facing the mounting plate 120 is used to fix the battery. The pressing plate 130 is disposed between the fixing plate 110 and the mounting plate 120. The driving mechanism is disposed on the mounting plate 120, and is further connected to the pressing plate 130, and the driving mechanism is configured to drive the pressing plate 130 to move toward or away from the fixing plate 110, that is, the driving mechanism can drive the pressing plate 130 to clamp the battery, and can adjust the driving force to adjust the pressure applied by the pressing plate 130 on the battery, that is, the external pressure of the battery simulated during the test. The pressure sensor 150 is disposed between the output end of the driving mechanism and the pressing plate 130, and the pressure sensor 150 is used for collecting pressure information between the driving mechanism and the pressing plate 130, that is, pressure information of external pressure of the battery. The displacement sensor 160 is disposed between the mounting plate 120 and the pressing plate 130, and the displacement sensor 160 is used for collecting displacement information of the pressing plate 130 along a moving direction (i.e., a relative arrangement direction of the fixing plate 110 and the mounting plate 120, i.e., a direction of an external pressure applied by the pressing plate 130 to the battery). The control unit is respectively connected to the driving mechanism, the pressure sensor 150 and the displacement sensor 160, and the control unit can judge whether the clamping of the pressing plate 130 and the fixing plate 110 to the battery meets a constant pressure (the constant pressure can be set according to the dimensional tolerance design of the battery) according to the pressure information, and accordingly control the driving mechanism, so that the driving mechanism applies the constant pressure to the battery, and the service condition of the battery circulating in the battery system is simulated. And the control unit can also acquire thickness change information of the battery in the charging and discharging process according to the displacement information, so that the relation between the capacity retention rate of the battery and the electrolyte injection amount of the battery is further obtained, and a reference is provided for the design of a battery system. Through the structure design, the utility model discloses can truly accurately simulate out the external pressure that the battery received, avoid external factor to influence the reference data that the test provided for the best external pressure of battery with this acquisition has higher accuracy, calculates out the size of the time-spent required constraint of former group according to this truly accurately, and then improves the performance and the life-span of battery. Additionally, the utility model discloses can realize the thickness of battery and the synchronous acquisition of pressure, the state change of the analysis battery of being convenient for.
As shown in fig. 2 and 3, in an embodiment of the present invention, the fixing plate 110 and the mounting plate 120 may be fixedly connected via a plurality of guide pillars 111, and the guide pillars 111 may be spaced along the edges of the fixing plate 110 and the mounting plate 120. On this basis, a plurality of guide posts 111 may respectively pass through the pressing plate 130, so that the pressing plate 130 moves in a direction guided by the guide posts 111. Through the structure design, the utility model discloses can utilize guide pillar 111 to strengthen the joint strength of fixed plate 110 and mounting panel 120, can utilize guide pillar 111 to provide the guide effect to the motion of clamp plate 130 simultaneously, further guarantee via the accuracy of the application of force direction of clamp plate 130 external pressure to battery A applys.
As shown in fig. 2 and 3, based on the design of the fixed connection between the fixing plate 110 and the mounting plate 120 via the plurality of guide posts 111, in an embodiment of the present invention, the pressing plate 130 may be provided with a plurality of bearing sleeves 132, and the plurality of guide posts 111 are respectively sleeved with the bearing sleeves 132. Through the structure design, the utility model discloses can further promote the smooth and easy degree of relative movement between clamp plate 130 and the guide pillar 111, reduce the friction between clamp plate 130 and the guide pillar 111, reduce consequently to the influence of pressure.
As shown in fig. 2 and 3, in an embodiment of the present invention, an edge of the mounting plate 120 may be provided with a first adaptor plate 121, and an edge of the pressing plate 130 is provided with a second adaptor plate 131, and the first adaptor plate 121 corresponds to a position of the second adaptor plate 131. On this basis, the displacement sensor 160 may be fixed to the first interposer 121, and the output 1601 of the displacement sensor 160 may be connected to the second interposer 131. Through the structure design, the utility model discloses can utilize first keysets 121 and second keysets 131 to arrange displacement sensor 160, avoid displacement sensor 160 to set up between clamp plate 130 and mounting panel 120 and produce with other structures and interfere, guarantee the accuracy of the displacement information that displacement sensor 160 gathered.
As shown in fig. 1, 3 and 4, based on the structural design that the mounting plate 120 is provided with the first adapter plate 121 and the pressing plate 130 is provided with the second adapter plate 131, in an embodiment of the present invention, the first adapter plate 121 may have a first portion and a second portion connected in a bending manner, for example, in an approximately "L" shape, the first portion is connected to the surface of the mounting plate 120 facing toward or away from the fixing plate 110, the second portion is located at the edge of the mounting plate 120, and the displacement sensor 160 is located at the second portion.
As shown in fig. 1, 3 and 4, based on the structural design that the mounting plate 120 is provided with the first adapter plate 121 and the pressing plate 130 is provided with the second adapter plate 131, in an embodiment of the present invention, the second adapter plate 131 may have a third portion and a fourth portion connected in a bending manner, for example, substantially in an "L" shape, the third portion is connected to the edge of the pressing plate 130, the fourth portion is arranged toward the displacement sensor 160, and the output 1601 of the displacement sensor 160 is connected to the fourth portion.
As shown in fig. 3 to 5, in an embodiment of the present invention, a side surface of the fixing plate 110 facing the mounting plate 120 may be provided with a support bracket 112, and the support bracket 112 is used for supporting the battery a. Through the structure design, the utility model discloses can further promote the stability of battery A when by fixed plate 110 and clamp plate 130 centre gripping, avoid battery A to receive the influence of gravity and take place to drop.
Based on the design that the fixing plate 110 is provided with the supporting frame 112, in an embodiment of the present invention, the supporting frame 112 can be adjustably disposed on the fixing plate 110 along the height direction. Through above-mentioned structural design, through adjusting the position of support frame 112 on the direction of height, the utility model discloses can adapt to different specification and dimension's battery A, perhaps can adapt to the demand to the application of force position that battery A is different, further expand the range of application. Moreover, by adjusting the supporting frame 112, the utility model discloses can also guarantee that battery A's face heart, pressure sensor 150, actuating mechanism (for example, the output shaft of cylinder 141) keep coaxial, avoid producing the branch to power.
As shown in fig. 3, in an embodiment of the present invention, a side surface of the fixing plate 110 facing the mounting plate 120 may be provided with a limiting block 113, and the limiting block 113 is used for limiting two sides of the battery a. Through the structure design, the utility model discloses can utilize the position of stopper 113 restriction battery A along the horizontal direction, further promote the stability of battery A when by fixed plate 110 and clamp plate 130 centre gripping, avoid battery A side to side drunkenness.
Based on the design that fixed plate 110 is provided with stopper 113, the utility model discloses an embodiment, stopper 113 can follow the horizontal direction position and set up adjustably on fixed plate 110. Through the structure design, through adjusting the position of stopper 113 on the horizontal direction, the utility model discloses can adapt to different specification and dimension's battery A, perhaps can adapt to the demand to the application of force position that battery A is different, further expand the range of application. Moreover, by adjusting the supporting frame 112, the utility model discloses can also guarantee that battery A's face heart, pressure sensor 150, actuating mechanism (for example, the output shaft of cylinder 141) keep coaxial, avoid producing to divide to the power.
As shown in fig. 2 and 3, in an embodiment of the present invention, the driving mechanism may include a cylinder 141, a solenoid valve 142, and an electric proportional valve 143. Specifically, the cylinder 141 and the solenoid valve 142 are connected via an air pipe 144, and the solenoid valve 142 and the electric proportional valve 143 are connected via an air pipe 144. Wherein the cylinder 141 is capable of outputting a constant pressure to simulate most of the battery a pack pretension. On the basis, the control unit can be respectively connected to the electromagnetic valve 142 and the electric proportional valve 143, thereby realizing the control of the expansion stroke of the air cylinder 141.
The utility model discloses an among the embodiment, the dynamometer can also be provided with the voltage acquisition unit, and the voltage of battery can be gathered to this voltage acquisition unit, and the control unit can connect in this voltage acquisition unit to the realization is to battery voltage variation's measurement and record. Through the structure design, the utility model discloses can realize the synchronous acquisition to voltage, thickness and the pressure of battery, the further change of state of analysis battery of being convenient for.
In an embodiment of the present invention, the control unit may specifically adopt a PID control mode. The PID control mode is understood as a control method in which control is performed according to the proportion (P), the integral (I), and the derivative (D) of the deviation in process control. Through the structure design, the utility model discloses can realize external pressure's accurate control to can the real-time recording pressure change.
As shown in fig. 1, in an embodiment of the present invention, the control unit may include a controller 210 and a processor 220. Specifically, the controller 210 is connected to the driving mechanism, the pressure sensor 150, and the displacement sensor 160, respectively, and the processor 220 is connected to the controller 210. The controller 210 can collect pressure information and displacement information and transmit to the processor 220. The processor 220 can judge whether the clamping of the pressing plate 130 and the fixing plate 110 to the battery meets the constant pressure according to the pressure information, so as to generate a control instruction and send the control instruction to the controller 210, and the processor 220 can also obtain the thickness change information of the battery in the charging and discharging process according to the displacement information.
As shown in fig. 1, based on the design that the control unit includes the controller 210, in an embodiment of the present invention, the controller 210 may be integrated into a control box.
As shown in fig. 1, based on the design that the control unit includes the processor 220, in an embodiment of the present invention, the processor 220 may be a desktop computer. In some embodiments, the processor 220 may also employ a laptop, a tablet, a smartphone, or other type of terminal device.
As shown in fig. 6, in an embodiment of the present invention, the constant pressure maintaining in the testing process of the present invention can be realized by adopting the following processes: the solenoid valve 142 is energized, maintaining the solenoid valve 142 open. The processor 220 sets a constant pressure and compares the actual pressure collected by the pressure sensor 150 to the constant pressure. If the actual pressure is greater than the constant pressure, the processor 220 sends out a PID algorithm to process and then transmits a control signal to the electric proportional valve 143, and the air pressure value output to the air cylinder 141 is reduced until the actual pressure and the constant pressure are consistent. If the actual pressure is lower than the constant pressure, the processor 220 sends out a control signal processed by a PID algorithm and transmits the control signal to the electric proportional valve 143, and the air pressure value output to the air cylinder 141 is increased until the actual pressure is consistent with the constant pressure.
The utility model discloses an in an embodiment, the utility model discloses record battery thickness direction dimensional change in the testing process and can specifically adopt following flow to realize: the cell was held in compression under constant pressure, at which time the cell displacement was noted as 0. When the battery starts to charge and the thickness of the battery increases, the battery pushes the pressing plate 130 to move toward the mounting plate 120 (i.e., away from the fixing plate 110) under a constant pressure, and the displacement sensor 160 changes accordingly, so as to measure the thickness change amount when the battery expands. When the battery starts to discharge and the thickness of the battery decreases, the air cylinder 141 pushes the pressing plate 130 to move toward the fixing plate 110 (i.e., away from the mounting plate 120) under a constant pressure, and the displacement sensor 160 changes accordingly, so as to measure the thickness change amount when the battery shrinks.
It should be noted herein that the battery expansion displacement measurement systems shown in the figures and described in the present specification are but a few examples of the many types of measurement systems that the principles of the present invention can be employed in. It should be clearly understood that the principles of the present invention are in no way limited to any of the details or any of the components of the battery expansion displacement measurement system shown in the drawings or described in the present specification.
To sum up, the utility model provides a battery inflation displacement measurement system can utilize pressure sensor 150 to gather the pressure between actuating mechanism's the output and the clamp plate 130, realizes the real-time collection to the external pressure of battery promptly in the test procedure to supply the control unit to compare with the constant pressure of settlement in view of the above, make corresponding adjustment control to actuating mechanism in view of the above, thereby guarantee that the constant pressure of applying on the battery is unchangeable. Through the structure design, the utility model discloses can truly accurately simulate out the external pressure that the battery received, avoid external factor to influence the reference data that the test provided for the best external pressure of battery with this acquisition has higher accuracy, calculates out the size of the time-spent required constraint of former group according to this truly accurately, and then improves the performance and the life-span of battery.
Referring to fig. 7, a flow chart of a method of measuring an optimal external pressure of a battery is representatively illustrated.
As shown in fig. 7, the method of measuring the optimal external pressure of the battery includes:
providing a battery expansion displacement measurement system as set forth in the present invention and in the above-described embodiments;
applying constant pressure to the battery at constant temperature, and charging and discharging the battery by using a charging and discharging device under a set charging and discharging multiplying power;
measuring thickness variation information and pressure information of the battery;
and obtaining the optimal external pressure corresponding to the set thickness variation range of the battery by adjusting the external pressure of the battery and recording the corresponding thickness variation information of the battery.
In summary, in the method for measuring the optimal external pressure of the battery, the external pressure of the battery is collected in real time during the test process, and is fed back to the adjustment control of the external pressure applied to the battery, so as to ensure that the constant pressure applied to the battery is not changed. Through the structure design, the utility model discloses can truly accurately simulate out the external pressure that the battery received, make the best external pressure of battery that can this obtain have higher accuracy, calculate out the size of the required constraining force when the mould is assembled according to this truly accurately, and then improve the performance and the life-span of battery.
Exemplary embodiments of a battery expansion displacement measurement system as set forth in the present disclosure are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the present battery expansion displacement measurement system has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (11)
1. A battery expansion displacement measurement system, comprising:
a measurement mechanism comprising:
the fixing plate and the mounting plate are oppositely arranged at intervals and are relatively fixed, and one side surface of the fixing plate facing the mounting plate is used for fixing a battery;
the pressing plate is arranged between the fixing plate and the mounting plate;
the driving mechanism is arranged on the mounting plate, connected to the pressure plate and used for driving the pressure plate to move towards or back to the fixed plate;
the pressure sensor is arranged between the output end of the driving mechanism and the pressing plate and is used for acquiring pressure information of the position; and
the displacement sensor is arranged between the mounting plate and the pressing plate and used for acquiring displacement information of the pressing plate along the movement direction; and
a control unit connected to the driving mechanism, the pressure sensor, and the displacement sensor, respectively, and configured to: and judging whether the clamping of the pressing plate and the fixing plate to the battery meets constant pressure or not according to the pressure information, controlling the driving mechanism according to the constant pressure, and acquiring thickness change information of the battery in the charging and discharging process according to the displacement information.
2. The battery expansion displacement measurement system of claim 1, wherein the fixing plate is fixedly connected to the mounting plate via a plurality of guide posts spaced along edges of the fixing plate and mounting plate; the guide posts respectively penetrate through the pressure plate, so that the pressure plate moves along the guide direction of the guide posts.
3. The battery expansion displacement measurement system according to claim 2, wherein the pressure plate is provided with a plurality of bearing sleeves, and the plurality of bearing sleeves are respectively sleeved on the plurality of guide posts.
4. The battery expansion displacement measurement system according to claim 1, wherein a first adapter plate is arranged on the edge of the mounting plate, a second adapter plate is arranged on the edge of the pressure plate, and the first adapter plate corresponds to the second adapter plate in position; the displacement sensor is fixed on the first adapter plate, and the output end of the displacement sensor is connected to the second adapter plate.
5. The battery expansion displacement measurement system of claim 4, wherein:
the first transfer plate is provided with a first part and a second part which are connected in a bending mode, the first part is connected to the surface, facing to or away from the fixing plate, of the mounting plate, the second part is located on the edge of the mounting plate, and the displacement sensor is arranged on the second part; and/or
The second adapter plate is provided with a third portion and a fourth portion which are connected in a bent mode, the third portion is connected to the edge of the pressing plate, the fourth portion faces the displacement sensor, and the output end of the displacement sensor is connected to the fourth portion.
6. The battery expansion displacement measurement system according to claim 1, wherein a side surface of the fixing plate facing the mounting plate is provided with a support bracket for supporting a battery.
7. The battery expansion displacement measurement system according to claim 6, wherein the support frame is provided on the fixing plate so as to be positionally adjustable in a height direction.
8. The battery expansion displacement measurement system according to claim 6, wherein a limiting block is disposed on a side surface of the fixing plate facing the mounting plate, and the limiting block is used for limiting two sides of the battery.
9. The battery expansion displacement measurement system according to claim 8, wherein the stopper is provided on the fixing plate to be adjustable in position in a horizontal direction.
10. The battery expansion displacement measurement system according to claim 1, wherein the driving mechanism comprises a cylinder, a solenoid valve and an electric proportional valve, the cylinder and the solenoid valve are connected through a gas pipe, and the solenoid valve and the electric proportional valve are connected through a gas pipe; wherein, the control unit is respectively connected with the electromagnetic valve and the electric proportional valve.
11. The battery expansion displacement measurement system of claim 1, wherein the control unit comprises a controller and a processor, the controller is connected to the driving mechanism, the pressure sensor and the displacement sensor, respectively, and the processor is connected to the controller; wherein the controller is configured to collect and transmit the pressure information and displacement information to the processor; the processor is configured to judge whether the clamping of the pressing plate and the fixing plate to the battery meets constant pressure according to the pressure information, so as to generate a control instruction and send the control instruction to the controller, and the processor is further configured to acquire thickness change information of the battery in the charging and discharging process according to the displacement information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223039149.XU CN218847185U (en) | 2022-11-15 | 2022-11-15 | Battery expansion displacement measurement system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223039149.XU CN218847185U (en) | 2022-11-15 | 2022-11-15 | Battery expansion displacement measurement system |
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| CN218847185U true CN218847185U (en) | 2023-04-11 |
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| CN202223039149.XU Active CN218847185U (en) | 2022-11-15 | 2022-11-15 | Battery expansion displacement measurement system |
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2022
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