CN214276797U

CN214276797U - Battery deformation detection device

Info

Publication number: CN214276797U
Application number: CN202120256636.8U
Authority: CN
Inventors: 周号
Original assignee: Zhuhai Maiju Microelectronics Co Ltd
Current assignee: Zhuhai Maiju Microelectronics Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-09-24
Anticipated expiration: 2031-01-29

Abstract

The present disclosure provides a battery deformation detection device, including: at least one strain sensing part disposed on at least one surface of a battery of the battery device, the strain sensing part being capable of generating a strain electrical signal based on at least a deformation of the battery device, the strain electrical signal being indicative of at least an occurrence of the deformation; the strain sensing part comprises at least one strain sensing device, the strain sensing device comprises a plurality of conductive elements, the conductive elements are uniformly arranged into a two-dimensional array, and each conductive element is insulated from other conductive elements; the strain sensing device can enable the position, corresponding to the deformation of the battery, of the two-dimensional array to deform in response to the deformation of the battery, and the strain sensing portion generates a strain electric signal based on the deformation of the two-dimensional array.

Description

Battery deformation detection device

Technical Field

The utility model belongs to the technical field of battery safety inspection, this disclosure especially relates to a battery deformation detection device.

Background

The lithium battery can deform when being subjected to external force, and bulges can be generated after the battery is aged. When the above problems occur in the lithium battery, problems such as internal short circuit, fire explosion, etc. will occur. Safety inspection of lithium batteries is therefore essential.

How to effectively and accurately detect the deformation of the battery and how to predict the faults of the battery, which is a problem to be solved in the field of battery safety.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a battery deformation detection apparatus and a battery management system.

According to an aspect of the present disclosure, there is provided a battery deformation detecting apparatus including:

at least one strain sensing portion disposed on at least one surface of a battery device, the strain sensing portion capable of generating a strain electrical signal based at least on a deformation of the battery device, the strain electrical signal being indicative of at least an occurrence of the deformation;

the strain sensing part comprises at least one strain sensing device, the strain sensing device comprises a plurality of conductive elements, the conductive elements are uniformly arranged into a two-dimensional array, and each conductive element is insulated from other conductive elements; the strain sensing device can respond to deformation of a battery to enable the position, corresponding to the deformation of the battery, of the two-dimensional array to deform, and the strain sensing portion generates the strain electric signal based on the deformation of the two-dimensional array.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the strain electric signal includes a self-capacitance change signal of any one of the conductive elements of the two-dimensional array.

According to at least one embodiment of this disclosure, the strain electric signal includes a mutual capacitance change signal between two adjacent conductive elements of the two-dimensional array.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the two-dimensional array includes a plurality of conductive elements arranged along a first direction and a plurality of conductive elements arranged along a second direction, and the first direction is perpendicular to the second direction.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the two adjacent conductive elements are two conductive elements adjacent in a first direction or two conductive elements adjacent in a second direction, and the first direction is perpendicular to the second direction.

According to at least one embodiment of this disclosure, the strain electric signal includes a mutual capacitance change signal between any two non-adjacent conductive elements of the two-dimensional array.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the strain sensing part includes two strain sensing devices, the two strain sensing devices are oppositely disposed, and an insulation gap is disposed between the two strain sensing devices.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the insulation gap is filled with a flexible insulating substance.

According to the battery deformation detection device of at least one embodiment of the present disclosure, a driving electrical signal is simultaneously applied to all the conductive elements of the strain sensing device, the self-capacitance of each conductive element is simultaneously measured, and a self-capacitance change signal is generated if the self-capacitance of the conductive element changes.

According to the battery deformation detection device of at least one embodiment of the present disclosure, a driving electrical signal is sequentially applied to each conductive element of all conductive elements of the strain sensing device, the self-capacitance of each conductive element is sequentially measured, and a self-capacitance change signal is generated if the self-capacitance of the conductive element changes.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the deformation degree is judged based on the magnitude of the self-capacitance change signal, and the deformation position is judged based on the position of the conductive element with the changed self-capacitance in the two-dimensional array.

According to the battery deformation detection device of at least one embodiment of the present disclosure, for the two-dimensional array of conductive elements arranged in the first direction, the conductive elements are divided into a plurality of groups in the second direction, and the following operations are simultaneously performed for each group of conductive elements of the plurality of groups of conductive elements:

a driving electric signal is sequentially applied to a mutual capacitor formed by two adjacent conductive elements, mutual capacitance is measured, and a mutual capacitance change signal is generated if the mutual capacitance changes.

According to the battery deformation detection device of at least one embodiment of the present disclosure, for the two-dimensional array of conductive elements arranged in the first direction, the conductive elements are divided into a plurality of groups in the second direction, and for each group of conductive elements of the plurality of groups of conductive elements, the following operations are sequentially performed:

According to the battery deformation detection device of at least one embodiment of the present disclosure, for the two-dimensional array of conductive elements arranged in the second direction, the conductive elements are divided into a plurality of groups along the first direction, and the following operations are simultaneously performed for each group of conductive elements of the plurality of groups of conductive elements:

According to the battery deformation detection device of at least one embodiment of the present disclosure, for the two-dimensional array of conductive elements arranged in the second direction, the conductive elements are divided into a plurality of groups along the first direction, and for each group of conductive elements of the plurality of groups of conductive elements, the following operations are sequentially performed:

a driving electric signal is sequentially applied to a mutual capacitor formed by two conductive elements with a preset conductive element interval, mutual capacitance is measured, and a mutual capacitance change signal is generated if the mutual capacitance changes.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the two-dimensional array includes a first sub-array and a second sub-array, and the first sub-array and the second sub-array are disposed in a same plane area;

the first sub-array comprises a plurality of first series groups of conductive elements comprising a plurality of conductive elements connected in series along a first direction, the plurality of first series groups of conductive elements being arranged along a second direction; the first series conductive element groups are insulated;

the second sub-array comprises a plurality of second series-connected groups of conductive elements, the second series-connected groups of conductive elements comprising a plurality of conductive elements connected in series along a second direction, the plurality of second series-connected groups of conductive elements being arranged along the first direction; the second series connection conductive element groups are insulated;

the first subarray and the second subarray are insulated;

the first direction and the second direction are perpendicular to each other.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the shape of the conductive elements of the first sub-array is the same as the shape of the conductive elements of the second sub-array.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the driving electric signals are simultaneously applied to all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array, the self capacitances of all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array are simultaneously measured, and the self capacitance change signal is generated if the self capacitances are changed.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the deformation position of the two-dimensional array is determined based on the position information of the first series conductive element group in which at least one self-capacitance of the first sub-array changes in the first sub-array and the position information of the second series conductive element group in which at least one self-capacitance of the second sub-array changes in the second sub-array.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the driving electrical signals are simultaneously applied to all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array, the mutual capacitances of the mutual capacitors formed by the respective first series conductive element groups of the first sub-array and the respective second series conductive element groups of the second sub-array are simultaneously measured, and a mutual capacitance change signal is generated if the mutual capacitances are changed.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the deformation position of the two-dimensional array is determined based on the position information of the first series conductive element group of the mutual capacitor in the first sub-array and the position information of the second series conductive element group in the second sub-array, in which the mutual capacitance changes.

According to at least one embodiment of this disclosure, the battery deformation detection device is characterized in that, the strain sensing part further comprises a first substrate layer and a second substrate layer, and the strain sensing device is arranged between the first substrate layer and the second substrate layer and is kept by the first substrate layer and the second substrate layer.

According to the battery deformation detection device of at least one embodiment of this disclosure, the first substrate layer and the second substrate layer are insulating materials.

According to the battery deformation detection device of at least one embodiment of this disclosure, the first substrate layer and the second substrate layer are flexible substrates.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the strain sensing portion further includes a first substrate layer and a second substrate layer, and the two strain sensing devices are respectively disposed on the first substrate layer and the second substrate layer.

According to at least one embodiment's of this disclosure battery deformation detection device, the strain induction part still includes the supporting part, the supporting part sets up between first substrate layer and the second substrate layer.

According to the battery deformation detection device of at least one embodiment of this disclosure, the supporting part is arranged at the edge of the first substrate layer and the second substrate layer.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the support portion includes a plurality of discrete support portions, or the support portion is an integrated structure.

According to the battery deformation detection device of at least one embodiment of this disclosure, the first substrate layer and the second substrate layer are flexible materials.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the strain sensing part may be disposed between two adjacent batteries.

According to the battery deformation detection apparatus of at least one embodiment of the present disclosure, the strain sensing part may be disposed between the battery and the case.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the strain sensing part may further generate the strain electric signal based on a deformation of a case of the battery device.

The battery strain detection device according to at least one embodiment of the present disclosure further includes a drive detection unit that applies a drive electric signal to the strain sensing unit and detects the strain electric signal generated by the strain sensing unit.

According to a battery deformation detection device of at least one embodiment of the present disclosure, the drive detection portion includes: a driving circuit for providing a driving electric signal to the strain sensing part; a detection circuit for detecting the strain electrical signal; and the controller controls the driving circuit to provide a driving signal for the strain sensing part, processes the strain electric signal obtained by the detection circuit and generates a processed strain electric signal.

According to the battery deformation detection device of at least one embodiment of the present disclosure, the driving detection portion further includes a memory that stores the strain electric signal processed by the controller.

According to still another aspect of the present disclosure, there is provided a battery management system including: any one of the above battery strain detection apparatuses.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a battery device provided with a battery deformation detection device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a battery device provided with a battery deformation detecting device according to still another embodiment of the present disclosure.

Fig. 3 is a schematic structural view of a strain sensing part of a battery strain detection apparatus according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a strain sensing device of a strain sensing part of a battery deformation detection apparatus according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a strain sensing part of a battery strain detection apparatus according to still another embodiment of the present disclosure.

Fig. 6 is a schematic diagram illustrating a manner in which a mutual capacitor can be formed between conductive elements of a strain sensing device of a strain sensing part of a battery deformation detecting apparatus according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural view of a strain sensitive device of a strain sensitive portion of a battery deformation detection apparatus according to still another embodiment of the present disclosure.

Fig. 8 is a schematic diagram of a first sub-array of the strain sensitive devices shown in fig. 7.

Fig. 9 is a schematic diagram of a second sub-array of strain sensitive devices shown in fig. 7.

Fig. 10 is a schematic structural view of a strain sensitive device of a strain sensitive portion of a battery deformation detection apparatus according to still another embodiment of the present disclosure.

Fig. 11 is a schematic structural view of a drive detection unit of the battery strain detection device according to the embodiment of the present disclosure.

Fig. 12 is a schematic diagram of a battery management system according to one embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

The present disclosure provides a battery deformation detection device, wherein this battery deformation detection device can be used for detecting the deformation of battery at least, and wherein this deformation can be battery bulge type deformation, also can be the deformation that the battery formed after receiving outside extrusion. The cause of the external compression may include, for example, a collision or acceleration, etc.

Fig. 1 is a schematic structural view of a battery device provided with a battery deformation detection device according to an embodiment of the present disclosure. Fig. 2 is a schematic structural view of a battery device provided with a battery deformation detecting device according to still another embodiment of the present disclosure. Fig. 3 is a schematic structural view of a strain sensing part of a battery strain detection apparatus according to an embodiment of the present disclosure. Fig. 4 is a schematic structural diagram of a strain sensing device of a strain sensing part of a battery deformation detection apparatus according to an embodiment of the present disclosure. Fig. 5 is a schematic structural view of a strain sensing part of a battery strain detection apparatus according to still another embodiment of the present disclosure. Fig. 6 is a schematic diagram illustrating a manner in which a mutual capacitor can be formed between conductive elements of a strain sensing device of a strain sensing part of a battery deformation detecting apparatus according to an embodiment of the present disclosure. Fig. 7 is a schematic structural view of a strain sensitive device of a strain sensitive portion of a battery deformation detection apparatus according to still another embodiment of the present disclosure. Fig. 8 is a schematic diagram of a first sub-array of the strain sensitive devices shown in fig. 7. Fig. 9 is a schematic diagram of a second sub-array of strain sensitive devices shown in fig. 7. Fig. 10 is a schematic structural view of a strain sensitive device of a strain sensitive portion of a battery deformation detection apparatus according to still another embodiment of the present disclosure. Fig. 11 is a schematic structural view of a drive detection unit of the battery strain detection device according to the embodiment of the present disclosure. Fig. 12 is a schematic diagram of a battery management system according to one embodiment of the present disclosure.

The battery deformation detecting device and the battery management system according to the present disclosure will be described in detail with reference to fig. 1 to 12.

According to an embodiment of the present disclosure, a battery deformation detecting apparatus includes:

at least one strain sensing part 12, the at least one strain sensing part 12 being arranged on at least one surface of a battery 11 of the battery device 10, the strain sensing part 12 being at least capable of generating a strain electrical signal based on a deformation of the battery 11 of the battery device 10, the strain electrical signal being at least indicative of an occurrence of the deformation;

wherein the strain sensing part 12 comprises at least one strain sensing device 121, the strain sensing device 121 comprises a plurality of conductive elements 1211, the plurality of conductive elements 1211 are uniformly arranged into a two-dimensional array, and each conductive element 1211 is insulated from other conductive elements 1211; the strain sensing device 121 is capable of deforming a position of the two-dimensional array corresponding to a deformation of the battery in response to the deformation of the battery, and the strain sensing part 12 generates the strain electric signal based on the deformation of the two-dimensional array.

The conductive element 1211 may be a sheet-like conductive thin film such as ITO (indium tin oxide).

As shown in fig. 1, the battery device 10 may include only one battery 11, and the battery 11 may be a battery pack including a plurality of battery cells or a battery cell. As can be seen from fig. 2, the battery device 10 includes a plurality of batteries 11, fig. 2 exemplarily shows four batteries 11, and the batteries 11 may be a battery pack including a plurality of battery cells or may be battery cells.

The battery deformation detecting device shown in fig. 1 has four strain sensitive parts 12, and the four strain sensitive parts 12 are respectively provided between four side surfaces of the battery 11 and the case 15. The strain sensitive portion 12 may be provided between the top surface of the battery 11 and the case 15, or between the bottom surface of the battery 11 and the case 15.

In the battery device 10 shown in fig. 2, the strain sensitive portions 12 are provided between the batteries 11, and the strain sensitive portions 12 are also provided between the side surfaces of the batteries 11 and the case 15.

It will be understood by those skilled in the art that the number of the batteries 11 and the arrangement position of the strain sensitive portions 12 shown in fig. 1 and 2 are exemplary.

With the battery deformation detection apparatus of the above embodiment, the strain electric signal includes a self-capacitance change signal of any one of the conductive elements 1211 of the two-dimensional array.

With the battery deformation detection device of the above embodiment, the strain electric signal includes a mutual capacitance change signal between two adjacent conductive elements 1211 of the two-dimensional array.

According to the battery deformation detecting apparatus of one embodiment of the present disclosure, as shown in fig. 4, the two-dimensional array includes a plurality of conductive elements 1211 arranged in a first direction and a plurality of conductive elements 1211 arranged in a second direction, the first direction being perpendicular to the second direction.

In the above embodiment, the two adjacent conductive elements 1211 are two conductive elements adjacent in the first direction or two conductive elements adjacent in the second direction, and the first direction is perpendicular to the second direction.

According to an alternative preferred embodiment of the present disclosure, the strain electrical signal comprises a mutual capacitance change signal between any two non-adjacent conductive elements 1211 of the two-dimensional array.

The strain sensitive part 12 shown in fig. 3 has only one strain sensitive device 121, and the strain sensitive part 12 shown in fig. 5 has two strain sensitive devices 121.

As shown in fig. 5, the strain sensing part 12 includes two strain sensing devices 121, the two strain sensing devices 121 are oppositely disposed, and an insulation gap is disposed between the two strain sensing devices 121.

The insulation gap may be realized by a flexible insulating substance, and the insulation gap may also be air or vacuum.

With the battery deformation detecting apparatus of each of the above embodiments, it is preferable that the driving electric signals are simultaneously applied to all the conductive elements 1211 of the strain sensing device 121, and the self-capacitances of the respective conductive elements 1211 are simultaneously measured, and the self-capacitance change signal is generated if the self-capacitances of the conductive elements 1211 change.

With the battery deformation detecting apparatus of each of the above embodiments, it is preferable that the driving electric signal is sequentially applied to each of the conductive elements 1211 of all the conductive elements 1211 of the strain sensing device 121, the self-capacitance of each of the conductive elements 1211 is sequentially measured, and the self-capacitance change signal is generated if the self-capacitance of the conductive element 1211 changes.

In each of the above embodiments, the degree of deformation is determined based on the magnitude of the self-capacitance change signal, and the position of deformation is determined based on the position of the conductive element 1211, whose self-capacitance has changed, in the two-dimensional array.

With the battery deformation detection apparatuses of the respective embodiments described above, it is preferable that, as shown in fig. 4, for the two-dimensional array of the conductive elements 1211 arranged in the first direction (the illustrated horizontal direction), divided into a plurality of groups in the second direction, the following operations are simultaneously performed for each group of conductive elements 1211 of the plurality of groups of conductive elements 1211:

a drive electric signal is sequentially applied to a mutual capacitor constituted by two adjacent conductive elements 1211, and mutual capacitance is measured, and a mutual capacitance change signal is generated if the mutual capacitance changes.

With the battery deformation detection apparatuses of the respective embodiments described above, it is preferable that, as shown in fig. 4, for the two-dimensional array of the conductive elements 1211 arranged in the first direction (the illustrated horizontal direction), divided into a plurality of groups in the second direction, the following operations are sequentially performed for each group of conductive elements 1211 of the plurality of groups of conductive elements 1211:

With the battery deformation detection apparatuses of the respective embodiments described above, it is preferable that, as shown in fig. 4, for the two-dimensional array of the conductive elements 1211 arranged in the second direction (the illustrated vertical direction), divided into a plurality of groups in the first direction, the following operations are simultaneously performed for each group of conductive elements 1211 of the plurality of groups of conductive elements 1211:

With the battery deformation detection apparatuses of the respective embodiments described above, it is preferable that, as shown in fig. 4, for the two-dimensional array of the conductive elements 1211 arranged in the second direction (the illustrated vertical direction), divided into a plurality of groups in the first direction, the following operations are sequentially performed for each group of conductive elements 1211 of the plurality of groups of conductive elements 1211:

a driving electric signal is sequentially applied to a mutual capacitor constituted by two conductive elements 1211 having a predetermined conductive element interval, and mutual capacitance is measured, and a mutual capacitance change signal is generated if the mutual capacitance changes.

Fig. 7 to 9 show schematic structural views of a strain sensing device 121 according to still another embodiment of the present disclosure.

As shown in fig. 7 to 9, the two-dimensional array of the strain sensitive devices 121 of the strain sensitive portion 12 of the battery deformation detecting apparatus includes a first sub-array (V1, V2, V3, V4) and a second sub-array (H1, H2, H3, H4), the first sub-array and the second sub-array being disposed within the same plane area;

the first sub-array comprises a plurality of first series groups of conductive elements (V1, V2, V3, V4), the first series groups of conductive elements comprising a plurality of conductive elements connected in series along a first direction, the plurality of first series groups of conductive elements being aligned along a second direction; the first series conductive element groups are insulated;

the second sub-array comprising a plurality of second groups of series-connected conductive elements (H1, H2, H3, H4), the second groups of series-connected conductive elements comprising a plurality of conductive elements connected in series along the second direction, the plurality of second groups of series-connected conductive elements being arranged along the first direction; the second series connection conductive element groups are insulated;

the first subarray and the second subarray are insulated;

the first direction and the second direction are perpendicular to each other.

It will be understood by those skilled in the art that the strain sensing device 121 shown in fig. 3 and 5 may be the strain sensing device 121 shown in fig. 7 to 9.

It will be understood by those skilled in the art that the number of first series groups of conductive elements of the first sub-array and the number of second series groups of conductive elements of the second sub-array shown in fig. 7-9 are merely exemplary.

In the battery strain detection apparatus of the present embodiment, the shape of the conductive elements of the first sub-array is the same as the shape of the conductive elements of the second sub-array.

The conductive elements may take the shape of a diamond as in fig. 7 to 9, or may take other shapes, the shape of the conductive elements shown in fig. 7 to 9 being only a preferred shape.

With the battery deformation detection apparatus of the above-described embodiment, it is preferable that the driving electric signals are simultaneously applied to all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array, the self capacitances of all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array are simultaneously measured, and the self capacitance change signal is generated if the self capacitances change.

With the battery deformation detection apparatus of the above embodiment, it is preferable that the deformation position of the two-dimensional array is determined based on the position information of the first series conductive element group in the first sub-array, in which at least one self-capacitance of the first sub-array changes, and the position information of the second series conductive element group in the second sub-array, in which at least one self-capacitance of the second sub-array changes.

With the battery strain detection apparatus of the above-described embodiment, it is preferable that the driving electric signals are simultaneously applied to all the first series conductive element groups of the first sub-array and all the second series conductive element groups of the second sub-array, and the mutual capacitances of the mutual capacitors formed by the respective first series conductive element groups of the first sub-array and the respective second series conductive element groups of the second sub-array are simultaneously measured, and if the mutual capacitances are changed, the mutual capacitance change signal is generated.

With the battery deformation detection apparatus of the above-described embodiment, it is preferable that the deformation position of the two-dimensional array is determined based on the positional information of the first series conductive element group in the first sub-array and the positional information of the second series conductive element group in the second sub-array of the mutual capacitor in which the mutual capacitance changes.

For the battery deformation detecting apparatus of the above embodiments, as shown in fig. 3 and 5, the strain sensing part 12 further includes a first substrate layer 125 and a second substrate layer 126, and the strain sensing element 121 is disposed between the first substrate layer 125 and the second substrate layer 126 and is held by the first substrate layer 125 and the second substrate layer 126.

First substrate layer 125 and second substrate layer 126 are preferably both insulating materials.

Preferably, first substrate layer 125 and second substrate layer 126 are both flexible substrates.

Preferably, two strain sensitive devices 121 are disposed on first substrate layer 125 and second substrate layer 126, respectively.

According to the battery deformation detecting apparatus of the preferred embodiment of the present disclosure, the strain sensing part 12 further includes a support part 124, and the support part 124 is disposed between the first substrate layer 125 and the second substrate layer 126.

Preferably, support 124 is disposed at an edge of first substrate layer 125 and second substrate layer 126.

Wherein the supporting portion 124 includes a plurality of discrete supporting portions, or the supporting portion 124 is a unitary structure.

The strain sensitive portion 12 of the battery strain detection apparatus of each of the above embodiments can be provided between two adjacent batteries 11.

The strain sensitive portion 12 of the battery strain detection device according to each of the above embodiments may be provided between the battery 11 and the case 15, and the strain sensitive portion 12 may generate a strain electric signal based on the strain of the case 15 of the battery device 10.

In the battery strain detection device according to each of the above embodiments, as shown in fig. 11, the battery strain detection device preferably further includes a drive detection unit 13, and the drive detection unit 13 applies a drive electric signal to the strain sensitive unit 12 and detects a strain electric signal generated by the strain sensitive unit 12.

Preferably, the drive detection section 13 includes:

a drive circuit for supplying a drive electric signal to the strain sensing part 12; the detection circuit is used for detecting the power transformation signal; and a controller for controlling the driving circuit to supply a driving signal to the strain sensing part 12 and processing the strain electric signal obtained by the detection circuit to generate a processed strain electric signal.

Preferably, the driving detection unit 13 further includes a memory for storing the strain electric signal processed by the controller.

The present disclosure also provides a battery management system including the battery deformation detection apparatus of any one of the above embodiments. Fig. 12 shows the battery management system in which the above-described drive detection section 13 may be integrated into a chip, and the pin strain sensing section of the chip is connected.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A battery deformation detection device, comprising:

2. The battery strain detection apparatus of claim 1, wherein the strain electrical signal comprises a self-capacitance change signal of any one of the conductive elements of the two-dimensional array.

3. The battery strain detection apparatus of claim 1, wherein the strain electrical signal comprises a mutual capacitance change signal between two adjacent conductive elements of the two-dimensional array.

4. A battery strain sensing device as defined in claim 1, wherein the two-dimensional array includes a plurality of conductive elements arranged along a first direction and a plurality of conductive elements arranged along a second direction, the first direction being perpendicular to the second direction.

5. The battery strain detection apparatus according to claim 3, wherein the two adjacent conductive elements are two conductive elements adjacent in a first direction or two conductive elements adjacent in a second direction, and the first direction is perpendicular to the second direction.

6. The battery strain detection apparatus of claim 1, wherein the strain electrical signal comprises a mutual capacitance change signal between any two non-adjacent conductive elements of the two-dimensional array.

7. The battery deformation detection apparatus according to claim 1, wherein the strain sensing part includes two strain sensing devices, the two strain sensing devices are oppositely disposed, and an insulation gap is provided between the two strain sensing devices.

8. The battery strain detection apparatus of claim 7, wherein the insulation gap is filled with a flexible insulating substance.

9. The battery deformation detecting apparatus according to claim 1, wherein the two-dimensional array includes a first sub-array and a second sub-array, the first sub-array and the second sub-array being disposed within a same plane area;

the first subarray and the second subarray are insulated;

the first direction and the second direction are perpendicular to each other.

10. A battery deformation sensing device according to claim 9, characterized in that the shape of the conductive elements of the first sub-array is the same as the shape of the conductive elements of the second sub-array.

11. The battery strain detection apparatus of any one of claims 1 to 6, wherein the strain sensing part further comprises a first substrate layer and a second substrate layer, and the strain sensing device is disposed between and held by the first substrate layer and the second substrate layer.

12. A battery deformation sensing device according to claim 11, wherein the first substrate layer and the second substrate layer are both made of insulating material.

13. A battery deformation sensing device as defined in claim 12, wherein the first substrate layer and the second substrate layer are both flexible substrates.

14. The battery deformation detection apparatus according to claim 7 or 8, wherein the strain sensing part further comprises a first substrate layer and a second substrate layer, and the two strain sensing devices are respectively disposed on the first substrate layer and the second substrate layer.

15. The battery strain detection apparatus of claim 14, wherein the strain sensing portion further comprises a support portion disposed between the first substrate layer and the second substrate layer.

16. The battery strain detection apparatus of claim 15, wherein the support portion is disposed at an edge of the first substrate layer and the second substrate layer.

17. A battery deformation sensing device according to claim 15, wherein the support portion comprises a plurality of discrete support portions, or the support portion is a unitary structure.

18. The battery strain detection apparatus of claim 14, wherein the first substrate layer and the second substrate layer are both insulating materials.

19. A battery deformation sensing device according to claim 14, wherein the first substrate layer and the second substrate layer are both flexible materials.

20. The battery strain detection apparatus according to claim 1, wherein the strain sensitive portion is capable of being disposed between two adjacent batteries.

21. The battery strain detection apparatus according to claim 1, wherein the strain sensitive portion is capable of being disposed between the battery and the case.

22. The battery strain detection apparatus according to claim 1, wherein the strain sensing portion is further capable of generating the strain electric signal based on a strain of a housing of the battery apparatus.

23. A battery strain detection apparatus according to claim 1, further comprising a drive detection portion that applies a drive electric signal to the strain sensitive portion and detects the strain electric signal generated by the strain sensitive portion.

24. A battery deformation detecting device according to claim 23, wherein the drive detecting portion includes:

a driving circuit for providing a driving electric signal to the strain sensing part;

a detection circuit for detecting the strain electrical signal; and

and the controller controls the driving circuit to provide a driving signal for the strain sensing part, processes the strain electric signal obtained by the detection circuit and generates a processed strain electric signal.

25. A battery deformation sensing device according to claim 24, wherein the drive sensing portion further includes a memory that stores the strain electric signal processed by the controller.