Battery pack bottom safety detection system and vehicle

Abstract

The utility model discloses a battery pack bottom safety detection system and a vehicle. The system comprises a battery pack, a damage detection unit, a force sensor and a comprehensive analysis module. The battery pack comprises a battery unit and a battery tray, and the battery unit is arranged on the battery tray; the damage detection unit is arranged between the battery unit and the battery tray and is used for detecting the deformation condition of the battery tray; the force sensor is arranged between the battery unit and the damage detection unit and is used for detecting the stress condition of the battery pack; and the comprehensive analysis module is electrically connected to the damage detection unit and the force sensor and is used for receiving detection data of the damage detection unit and the force sensor and analyzing the damage condition of the battery pack according to the detection data. According to the utility model, the stress condition of the battery pack is detected while the deformation condition is detected, so that the damage position is determined more accurately, and the safety of the battery pack is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile battery detection technical field, especially a kind of battery pack bottom safety detection system and vehicle. BACKGROUND

[0002] Battery pack is the whole unit assembled by multiple battery modules, for storing and providing electric energy, widely used in electric vehicles, hybrid electric vehicles, energy storage systems and other technical fields with demand for large capacity, high voltage. Battery pack as the main energy storage and power source of current new energy vehicle, is the core component of new energy vehicle. Therefore, in order to ensure the overall safety of new energy vehicle, the safety detection of battery pack is particularly important.

[0003] However, the current battery pack safety detection scheme can only simply judge the damage state of battery pack, and can only detect the deformation of battery tray through charge plate and estimate the area where the damaged point is. The above scheme cannot accurately detect the damage of battery unit, and cannot accurately determine the specific position of damaged point. It leads to the inability to judge and analyze the actual situation of battery pack, such as whether to replace battery pack or whether to replace battery tray, and cannot guarantee the safety of battery unit. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of battery pack bottom safety detection system, for the problem that existing scheme cannot accurately detect the damage of battery unit, cannot accurately determine the specific position of damaged point. By setting damage detection unit and force sensor at the same time, the deformation of battery tray is detected at the same time, so that the damaged position can be more accurately determined, which is beneficial to further judge the actual situation of battery pack and ensure safety.

[0005] In order to achieve the above purpose, the utility model provides a kind of battery pack bottom safety detection system, comprising:

[0006] Battery pack, the battery pack includes battery unit and battery tray, the battery unit is set to the battery tray;

[0007] Damage detection unit, the damage detection unit is arranged between the battery unit and the battery tray, for detecting the deformation of the battery tray;

[0008] Force sensor, the force sensor is arranged between the battery unit and the damage detection unit, for detecting the stress condition of the battery pack;And

[0009] A comprehensive analysis module is electrically connected to the damage detection unit and the force sensor, configured to receive detection data of the damage detection unit and the force sensor, and analyze damage of the battery pack according to the detection data.

[0010] Optionally, the damage detection unit comprises:

[0011] a sensing plate; and

[0012] a charge plate arranged between the sensing plate and the battery tray.

[0013] The sensing plate is configured as an insulating plate, and a plurality of sensing tips are arranged on the sensing plate, configured to detect charge distribution of the charge plate.

[0014] Optionally, the bottom of the charge plate is attached to the battery tray.

[0015] Optionally, the charge plate is configured as a metal plate with an insulated bottom.

[0016] Optionally, the charge distribution of the charge plate is used to determine deformation of the charge plate and the battery tray.

[0017] Optionally, the deformation of the charge plate comprises: no deformation of the charge plate; deformation of the charge plate; and penetration of the charge plate.

[0018] Optionally, the force sensor has a two-dimensional positioning capability, configured to detect a force position and a force size of the battery pack.

[0019] Optionally, the comprehensive analysis module stores various data of the battery pack and training data of damage of the battery pack after being subjected to external force.

[0020] Optionally, the comprehensive analysis module is configured to compare the received detection data with the stored data.

[0021] The second aspect of the utility model provides a vehicle comprising the battery pack bottom safety detection system of any one of the first aspect,

[0022] The comprehensive analysis module is electrically connected to a control terminal of the vehicle, and sends an analysis result of damage of the battery pack to the control terminal.

[0023] Compared with the prior art, the utility model has at least the following technical effects:

[0024] By setting the damage detection unit and the force sensor at the same time, the stress condition of the battery pack is detected while the deformation condition of the battery tray is detected, so that the damage condition of the battery unit can be more accurately detected, and the specific position of the damage point is determined.

[0025] The detection data of the damage detection unit and the force sensor are received by the comprehensive analysis module, so that the actual condition of the battery pack is accurately judged and analyzed, whether the battery pack needs to be replaced and maintained or whether only the battery pack tray needs to be replaced is determined, and the safety of the battery pack is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the present application, the drawings needed in the description will be briefly introduced as follows. Obviously, the drawings in the following description are one embodiment of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings:

[0027] Figure 1 It is a structural schematic view of the battery pack bottom safety detection system according to the specific embodiment of the present application.

[0028] Figure 2 It is a charge distribution schematic view detected by the induction plate according to the specific embodiment of the present application, wherein the charge distribution condition when the charge plate does not deform is shown.

[0029] Figure 3 It is another charge distribution schematic view detected by the induction plate according to the specific embodiment of the present application, wherein the charge distribution condition when the charge plate deforms is shown.

[0030] Figure 4 It is another charge distribution schematic view detected by the induction plate according to the specific embodiment of the present application, wherein the charge distribution condition when the charge plate penetrates is shown.

[0031] Figure 5 It is a logic schematic view of the battery pack bottom safety detection system according to the specific embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 10: battery unit

[0034] 20: damage detection unit

[0035] 21: induction plate

[0036] 22: induction end

[0037] 23: charge plate

[0038] 30: force sensor DETAILED DESCRIPTION

[0039] The battery pack bottom safety detection system according to the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description. It should be noted that the accompanying drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating and clarifying the purpose of assisting the description of the embodiments of the present application. In order to make the purpose, features and advantages of the present application more apparent and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, so that those skilled in the art can understand and read, and are not used to limit the conditions of the implementation of the present application, so they do not have the technical essence, any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0040] The first aspect of the present embodiment provides a battery pack bottom safety detection system, as shown in Figure 1 The system includes a battery pack, a damage detection unit 20, a force sensor 30 and a comprehensive analysis module (not shown). The battery pack includes a battery cell 10 and a battery tray (not shown), the battery cell 10 is arranged to the battery tray; the damage detection unit 20 is arranged between the battery cell 10 and the battery tray, for detecting the deformation condition of the battery tray; the force sensor 30 is arranged between the battery cell 10 and the damage detection unit 20, for detecting the stress condition of the battery pack; the comprehensive analysis module is electrically connected to the damage detection unit 20 and the force sensor 30, for receiving the detection data of the damage detection unit 20 and the force sensor 30, and analyzing the damage condition of the battery pack according to the detection data.

[0041] Specifically, as shown in Figure 1 The damage detection unit 20 includes an induction plate 21 and a charge plate 23, wherein the induction plate 21 is configured as an insulating plate, and a plurality of induction tips 22 are arranged on the induction plate 21, which can be used to detect the charge distribution of the charge plate 23. The charge plate 23 is arranged between the induction plate 21 and the battery tray, the bottom of the charge plate 23 is attached to the battery tray, and the charge plate 23 is configured as a bottom-insulated metal plate.

[0042] When the battery tray is deformed due to external force, the charge plate 23 will also be deformed, and the charge distribution of the charge plate 23 can be used to determine the deformation of the charge plate 23 and the battery tray.

[0043] According to the charge distribution detected by the induction plate 21, the deformation of the charge plate 23 includes three cases: no deformation, deformation, and penetration. The three cases can be determined according to the amount of charge outside the damaged area in the charge distribution collected by the induction plate 21. Specifically, as shown in Figure 2 When the charge plate 23 is not deformed, the charge distribution is uniform, i.e., there is no damaged area. As shown in Figure 3 When the battery tray and the charge plate 23 are deformed due to external force, the charge distribution collected by the induction tip 22 will increase in a certain contour area, i.e., there is a damaged area with deformation. And as shown in Figure 4 When the battery pack is severely damaged, causing the charge plate 23 to penetrate, the charge distribution collected by the induction tip 22 will be concentrated in a certain contour area, i.e., there is a damaged area with severe damage.

[0044] Specifically, the force sensor 30 has two-dimensional positioning capability and can obtain two-dimensional information of the stress point of the battery pack. While detecting the stress size of the battery pack, the stress position of the battery pack can be accurately detected, so that the stress condition of each area of the bottom of the battery pack can be obtained.

[0045] When the battery pack is not subjected to external force, the battery tray is normal, and the data collected by the force sensor 30 and the damage detection unit 20 is within the normal threshold. When the battery tray is deformed due to external force, the charge plate 23 will also be deformed, causing the charge distribution collected by the induction tip 22 to be as shown in Figure 3 or Figure 4 As shown, there is an increase or a large amount of charge in a certain contour area. Alternatively, when the external force is large, the charge distribution collected by the induction tip 22 may have a damaged contour area, but there is no charge in the damaged contour area.

[0046] Further, the comprehensive analysis module can store various data of the battery pack, such as material performance, mechanical performance, and training data of the damage of the battery pack after being subjected to external force. As shown in Figure 5As shown, the comprehensive analysis module can obtain the area of the contour region through data analysis, preliminarily judge the deformation condition of the battery tray, and further combine the force condition of the deformation region detected by the force sensor 30 to calculate the mechanical data of the external force received by the battery pack and determine the specific position of the damage point. By further comparing the received detection data with the stored data, the overall damage condition of the battery pack is analyzed. The overall damage condition of the battery pack can be compared with the critical damage data to determine whether the battery unit 10 and the battery tray need to be replaced, whether it will affect the subsequent use, and other conclusions, thereby facilitating the maintenance and ensuring the overall safety of the battery pack. For example, when the damage condition of the battery unit 10 exceeds the pre-stored damage threshold in the comprehensive analysis module, it can be determined that the battery unit 10 needs to be replaced.

[0047] The embodiment further provides a vehicle including the battery pack bottom safety detection system. The comprehensive analysis module can be electrically connected to a control terminal of the vehicle and send the analysis result of the damage condition of the battery pack to the control terminal.

[0048] As shown, Figure 5 The driver can obtain and view the analysis result of the damage position of the battery pack, the actual damage condition of the battery unit 10, and whether the battery unit 10 and the battery tray need to be repaired and replaced through the control terminal. For example, when the transmitted conclusion considers that the battery tray is damaged, the control terminal reminds the driver to replace the battery tray, and the driver can actively replace the battery tray. When the replacement is completed and the system returns to the normal state, the comprehensive analysis module can transmit the obtained normal data to the control terminal in real time, further ensuring the safety of subsequent driving.

[0049] The utility model discloses a damage detection unit and a force sensor are arranged at the same time, and the force condition of the battery pack is detected while the deformation condition of the battery tray is detected, so that the damage condition of the battery unit can be more accurately detected, and the specific position of the damage point is determined. The detection data of the damage detection unit and the force sensor are received by the comprehensive analysis module, and the actual condition of the battery pack is accurately judged and analyzed, so that whether the battery pack needs to be replaced and repaired or whether only the battery tray needs to be replaced is further determined, and the safety of the battery pack is effectively ensured, which has a significant progress compared with the prior art.

[0050] It should be noted that the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or can also include elements inherent in such processes, methods, articles, or apparatuses. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0051] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "height", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0052] In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise specified and limited, the first feature "above" or "below" the second feature can include direct contact between the first and second features, or can include indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0054] Although the content of the utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A battery pack bottom safety detection system, characterized by, The application relates to a battery pack bottom safety detection system. The battery pack comprises a battery unit and a battery tray, and a damage detection unit is arranged between the battery unit and the battery tray to detect the deformation of the battery tray. A force sensor is arranged between the battery unit and the damage detection unit to detect the force applied to the battery pack. A comprehensive analysis module is electrically connected to the damage detection unit and the force sensor to receive the detection data of the damage detection unit and the force sensor and analyze the damage of the battery pack according to the detection data. The damage detection unit comprises an induction plate and a charge plate arranged between the induction plate and the battery tray. The induction plate is an insulating plate provided with a plurality of induction tips to detect the charge distribution of the charge plate.

2. The battery pack bottom safety detection system of claim 1, wherein, The bottom of the charge plate is attached to the battery tray. The charge plate is a metal plate with an insulated bottom. The charge distribution of the charge plate is used to determine the deformation of the charge plate and the battery tray. The deformation of the charge plate includes no deformation, deformation and penetration.

3. The battery pack bottom safety detection system of claim 2, wherein, The force sensor has two-dimensional positioning capability to detect the force position and the force size of the battery pack.

4. The battery pack bottom safety detection system of claim 3, wherein, The comprehensive analysis module stores various data of the battery pack and training data of the damage of the battery pack after being subjected to external force.

5. The battery pack bottom safety detection system of claim 3, wherein, The comprehensive analysis module is used to compare the received detection data with the stored data.

6. The battery pack bottom safety detection system of claim 5, wherein, The application further discloses a battery pack bottom safety detection system.

7. The battery pack bottom safety detection system of claim 1, wherein, The comprehensive analysis module is electrically connected to the control terminal of the vehicle and sends the analysis result of the damage of the battery pack to the control terminal.

8. The battery pack bottom safety detection system of claim 1, wherein, ​ 9. The battery pack bottom safety detection system of claim 8, wherein, ​ 10. A vehicle characterized by comprising: ​ ​

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