CN212874579U - Battery pack with shell damage detection unit and electric automobile - Google Patents
Battery pack with shell damage detection unit and electric automobile Download PDFInfo
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- CN212874579U CN212874579U CN202021868933.XU CN202021868933U CN212874579U CN 212874579 U CN212874579 U CN 212874579U CN 202021868933 U CN202021868933 U CN 202021868933U CN 212874579 U CN212874579 U CN 212874579U
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- battery
- shell
- battery pack
- detection unit
- casing
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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 pack and an electric automobile with a casing damage detection unit, the battery pack of the electric automobile comprises a casing, a battery unit accommodated in the casing, a battery management system, a battery distribution box, a high-voltage plug connector, a low-voltage plug connector and an explosion-proof valve, wherein the high-voltage plug connector and the low-voltage plug connector are arranged on the casing and are electrically connected with the battery management system and the battery distribution box; the casing damage detection unit is including locating a plurality of photosensitive sensor in the casing, just photosensitive sensor is a plurality of in battery unit below distribution to in battery management system with battery distribution box position is equipped with photosensitive sensor, bottom in the casing can be separated for a plurality of regions that correspond respectively with each photosensitive sensor because of the setting of each photosensitive sensor. The utility model discloses can realize the damaged detection to battery package bottom casing to can make the car owner in time discover the damage of battery package casing bottom, in order to avoid causing the battery package accident.
Description
Technical Field
The utility model relates to a new energy automobile technical field, in particular to battery package with damaged detecting element of casing, simultaneously, the utility model also relates to an electric automobile with this battery package.
Background
With the increasing prominence of resource and environmental issues, the conventional fuel-powered vehicle is gradually replaced by a new energy vehicle, and among the new energy vehicles, an electric vehicle using a battery pack as an energy source has been gradually accepted by more and more people. In an electric automobile, the light weight of a battery pack is related to not only the energy density of the battery pack but also the improvement of the endurance mileage of the whole automobile. In order to reduce the weight of the battery pack and achieve a light weight design, it is a feasible way to reduce the thickness of the battery pack case.
However, most electric vehicles arrange the battery pack below the floor of the whole vehicle, and during the driving of the whole vehicle, objects with large volume, such as deceleration strips and stones, on the road surface inevitably collide the bottom of the battery pack. At this time, if the battery pack is severely impacted, the bottom of the battery pack shell is deformed and even damaged, and the damage of the battery pack shell can cause the failure of the battery pack seal. However, the damage of the battery pack shell may not affect the normal driving of the whole vehicle, so when the vehicle is continuously used without finding the damage of the battery pack shell, if the vehicle wades into the water, the water enters the battery pack with a high probability, the internal short circuit of the battery pack is further caused, and the fire or even the explosion occurs.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a battery pack with a casing damage detection unit, so as to detect the damage of the casing bottom of the battery pack in time.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a battery pack having a case breakage detecting unit, wherein:
the battery pack comprises a shell, a battery unit, a battery management system, a battery distribution box, a high-voltage plug connector, a low-voltage plug connector and an explosion-proof valve, wherein the shell is composed of a lower shell and an upper shell which are fixedly connected together and are arranged in a sealing mode, the battery unit is accommodated in the shell and is composed of a plurality of battery modules, the battery management system and the battery distribution box are electrically connected with the battery modules, the high-voltage plug connector and the low-voltage plug connector are arranged on the shell and are electrically connected with the battery management system and the battery distribution box, and the;
the shell damage detection unit comprises a plurality of photosensitive sensors arranged in the shell, each photosensitive sensor is electrically connected with the battery distribution box and the battery management system, the photosensitive sensors are distributed below the battery units, the photosensitive sensors are arranged at the positions of the battery management system and the battery distribution box, and the bottom in the shell can be divided into a plurality of areas corresponding to the photosensitive sensors respectively due to the arrangement of the photosensitive sensors.
Further, the lower shell and the upper shell are arranged in a sealing mode through a sealing strip clamped between the lower shell and the upper shell.
Furthermore, the high-voltage plug connector and the low-voltage plug connector are arranged on the lower shell.
Furthermore, the explosion-proof valve is arranged on the upper shell and is positioned on one side of the upper shell.
Furthermore, a sealing detection interface which is communicated with the inside of the shell and can be blocked by the blocking piece is arranged on the shell.
Furthermore, the sealing detection interface is arranged on the shell adjacent to the high-voltage plug connector and the low-voltage plug connector.
Further, the upper shell and the lower shell are fixedly connected through a plurality of screws arranged along the edges of the upper shell and the lower shell, and a plurality of fixing holes for fixing the battery pack on the vehicle body are formed in the lower shell.
Furthermore, in the casing, a cooling plate is arranged at the bottom of the battery unit, and the photosensitive sensors located below the battery unit are distributed below the cooling plate.
Compared with the prior art, the utility model discloses following advantage has:
the utility model discloses a battery package with casing damage detecting element utilizes a plurality of photosensitive sensor that set up, can be because of colliding with when leading to battery package bottom casing damaged, detected by photosensitive sensor in getting into the battery package because of external light to can realize the damaged detection in battery package casing bottom, in order to do benefit to the car owner in time to discover the damage of battery package casing bottom, avoid causing the battery package accident.
Furthermore, the utility model provides an electric automobile, be equipped with the foretell battery package that has the damaged detecting element of casing on the electric automobile, battery management system with electric automobile's vehicle control unit electricity is connected to can gather each photosensitive sensor's feedback signal, just vehicle control unit is configured to respond to the collection feedback signal, and can enable electric automobile's instrument desk display screen output warning information.
Furthermore, a vehicle speed sensor and a speed limiter capable of limiting the vehicle speed are arranged in the electric vehicle, the vehicle speed sensor and the speed limiter are electrically connected with the vehicle control unit, and the vehicle control unit is configured to enable the speed limiter to act in response to the collected feedback signal.
The utility model discloses an electric automobile can in time discover the damage of battery package bottom casing through the battery package more than adopting, can avoid causing the battery package accident, and has fine practicality.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an overall schematic view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic internal view of a battery pack according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
fig. 4 is a schematic distribution diagram of a photosensor according to an embodiment of the present invention;
FIG. 5 is a schematic view of the housing damage detection according to the embodiment of the present invention;
description of reference numerals:
1-shell, 101-lower shell, 102-upper shell;
2-a battery module;
3-a battery management system;
4-a battery distribution box;
5-a wire harness;
6-low voltage plug connector;
7-high voltage plug connector;
8-sealing the detection interface;
9-an explosion-proof valve;
10-photosensitive sensor.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present embodiment relates to a battery pack with a casing damage detection unit, which is combined with the battery pack shown in fig. 1 to 4, and the battery pack has a casing 1 formed by a lower casing 101 and an upper casing 102 that are fixedly connected together and hermetically sealed with each other, a battery unit formed by a plurality of battery modules 2 accommodated in the casing 1, and a battery management system 3 and a battery distribution box 4 electrically connected to each battery module 2.
Meanwhile, the battery pack of the embodiment further includes a high-voltage connector 7 and a low-voltage connector 6 which are arranged on the housing 1 and electrically connected with the battery management system 3 and the battery distribution box 4, and an explosion-proof valve 9 arranged on the housing 1.
The lower case 101 and the upper case 102 in the case 1 of the present embodiment are respectively made of materials commonly used in the existing power battery pack case structure, such as aluminum alloy or composite materials, and both are also formed by conventional stamping, injection molding or other machining methods. The lower casing 101 and the upper casing 102 can be sealed by a sealing strip clamped between the lower casing 101 and the upper casing 102, the sealing strip is made of existing rubber or silicon rubber, and generally, a sealing strip groove is formed in the lower casing 101, the sealing strip is embedded in the sealing strip groove, meanwhile, the upper portion of the sealing strip protrudes outwards relative to the top of the lower casing 101, and then the sealing strip can be clamped between the upper casing 102 and the lower casing 101 by utilizing the buckling between the upper casing and the lower casing, so that the sealing strip can be sealed at the joint position of the upper casing and the lower casing.
As a possible implementation form of this embodiment, the upper housing 102 and the lower housing 101 may be generally fixedly connected by a plurality of screws disposed along the edges of the two, and further, a plurality of fixing holes are also generally disposed on the lower housing 101 for fixing the battery pack on the vehicle body. At this time, based on the arrangement of the fixing holes on the lower case 101, the whole battery pack may be fixed to the vehicle body via bolts inserted into the fixing holes, and the battery pack may be loaded in the vehicle body, similarly to the fixing manner between the upper case and the lower case.
Each battery module 2 constituting the battery unit of the present embodiment, and a Battery Management System (BMS) and a battery distribution Box (BDU) electrically connected to the battery module 2 may be referred to the related structure in the conventional power lithium battery pack. In addition, the high-voltage connector 7 and the low-voltage connector 6 for electrically connecting the battery pack and the external vehicle circuit are also provided on the lower case 101. A seal detection port 8 communicating with the inside of the housing 1 is provided in the housing 1, specifically, the lower housing 101.
The sealing detection interface 8 is used for detecting the sealing performance of the whole battery pack, and when the battery pack is not detected, namely in daily use, the sealing detection interface 8 can be plugged by the plugging piece, so that the sealing performance in the battery pack is ensured. Here, the plugging member may be a conventional plugging structure that is screwed or inserted into the sealing detection interface 8 in an interference manner, and as an exemplary implementation form, the sealing detection interface 8, the high-voltage plug connector 7, and the low-voltage plug connector 6 in this embodiment are also adjacently disposed on the lower case 101, so that the connection with the battery pack may be facilitated, and the forming of the lower case 101 may also be facilitated to a certain extent.
The explosion-proof valve 9 is disposed on the upper housing 102, and is also located on one side of the upper housing 102. Meanwhile, the explosion-proof valve 9 is made of the existing product, and the explosion-proof valve 9 can be generally arranged into two parts at intervals so as to have a better explosion-proof exhaust effect. Instead of being arranged on one side and optionally being provided in two, the positions and the number of the explosion-proof valves 9 can be provided in other patterns according to the specific configuration of the housing 1 of the battery pack, the safety design requirements of the battery pack and the like.
As a configuration that is usually adopted, each battery module 2 in the battery unit of the present embodiment is electrically connected to the battery management system 3 and the battery distribution box 4 through the wiring harness 5. Of course, in addition to these, components such as the low-voltage plug 6, the high-voltage plug 7, and the like, and the battery management system 3 and the battery distribution box 4 are electrically connected by the wire harness 5.
By the above description of the overall structure of the battery pack, the casing damage detection unit in this embodiment includes a plurality of light sensors 10 disposed in the casing 1, each light sensor 10 is electrically connected to the battery distribution box 4 and the battery management system 3, and in the arrangement, the plurality of light sensors 10 are distributed below the battery unit, and the light sensors 10 are disposed at the positions where the battery management system 3 and the battery distribution box 4 are located.
In this case, a distribution of the photosensors 10 is as shown in fig. 4, and by the arrangement of the photosensors 10, the bottom of the housing 1 of the present embodiment can be divided into a plurality of regions corresponding to the photosensors 10, respectively, without any problem due to the arrangement of the photosensors 10. Here, the correspondence between one of the "regions" and one of the photosensors 10 is that the region is the location of the photosensor 10 and each location within a certain coverage area around the location. Since these positions are close to the photosensitive sensor 10, when there is an optical signal at any position in the area, the photosensitive sensor 10 corresponding to the area can detect the optical signal, and the photosensitive sensor 10 corresponding to the area generally has a higher feedback current than the photosensitive sensors 10 in other areas.
In this embodiment, the regions corresponding to the photosensors 10 may be freely divided based on the arrangement of the photosensors 10, and the regions corresponding to the adjacent photosensors 10 may also have a certain overlap, and the detection of the optical signals occurring in the overlapped regions may be mainly performed by the two photosensors 10 at the same time.
It should be noted that, when there is no cooling structure in the battery pack, the general photosensors 10 may be disposed below the battery cells, and when there is a cooling plate disposed at the bottom of the battery cells in the battery pack, the photosensors 10 disposed below the battery cells should be correspondingly disposed below the cooling plate. Furthermore, regardless of the arrangement of the photosensors 10, each photosensor 10 of the present embodiment may be electrically connected to the battery distribution box 4 and the battery management system 3 through a wire integrated in the wire harness 5.
Based on the above description of the battery pack, the present embodiment further relates to an electric vehicle, in which the battery pack is disposed, and as shown in fig. 5, the battery management system 3 is electrically connected to a Vehicle Control Unit (VCU) of the electric vehicle, so that the vehicle control unit can collect feedback signals of the photosensitive sensors 10 through the battery management system 3, and the vehicle control unit is also configured to enable the instrument desk display screen of the electric vehicle to output warning information in response to the collected feedback signals.
In addition, a speed sensor and a speed limiter capable of limiting the speed of the electric vehicle are also arranged in the electric vehicle of the embodiment, the speed sensor and the speed limiter are electrically connected with the vehicle control unit, and the vehicle control unit is also configured to enable the speed limiter to act in response to the collected feedback signal so that the speed limiter limits the running speed of the electric vehicle. At this time, the speed limiter is generally connected to the existing module product in the electric automobile, and the speed sensor also adopts the sensing part conventionally adopted in the existing automobile.
So, to the electric automobile of this embodiment, when causing the battery package bottom casing to take place the damage because of colliding with, external light just can be by in the damaged entering battery package, and through each photosensor 10 that distributes, just can detect the light signal of entering to make photosensor 10 produce feedback current, and form feedback signal. And then the vehicle control unit can judge that the battery pack shell is damaged by adopting a feedback signal of the photosensitive sensor 10 through the battery management system 3, so as to control the instrument desk display screen to output warning information such as characters or voice and further inform a vehicle owner in time.
In addition, based on the collection of the feedback signal of the light sensor 10 by the vehicle control unit, since the damaged portion belongs to a single or multiple adjacent areas, or the light signal detected by the light sensor 10 corresponding to each area entering the optical transmission direction is strong, the corresponding feedback current is large, that is, the feedback signal is strong. Therefore, the vehicle control unit can preliminarily determine the approximate position or the approximate area where the damage occurs by recognizing the photosensitive sensor 10 having a strong feedback signal, so that the vehicle control unit can know the approximate position or the approximate area and take necessary attention measures.
The vehicle control unit may pre-store the correspondence between each photosensitive sensor 10 and the divided area at the bottom of the battery pack into the vehicle control unit according to the strength of the feedback signal of the photosensitive sensor 10 to determine the damaged position or area, so that the collected photosensitive sensor 10 may call the corresponding area name. The area names can be indicated by adopting a front left area, a front middle area, a front right area, a middle left area, a middle area, a middle right area, a back left area, a back middle area, a back right area and the like, and can be set to be output in a text display or voice broadcast mode.
Of course, in addition to the text or voice, it is preferable to provide a virtual image of the battery pack, and show each of the photosensors 10 and its corresponding region in the image, so that the vehicle control unit can show the damaged region in the instrument desk display screen (generally, a hollow screen) in a more vivid manner, i.e., an image.
When the vehicle control unit detects that the bottom of the battery pack shell is damaged, the vehicle control unit not only sends out corresponding warning information to inform a vehicle owner, but also can display a damaged area. Therefore, the safety of the vehicle when the battery pack shell is damaged can be improved.
The battery package and the electric automobile of this embodiment utilize a plurality of photosensitive sensor 10 that set up, can be because of colliding with when leading to battery package bottom casing damaged, because of outside light gets into in the battery package and is detected by photosensitive sensor 10 to can realize the damaged detection in battery package body bottom, in order to do benefit to the damage of car owner in time discovering battery package casing bottom, avoid causing the battery package accident, and have fine practicality.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery pack with a case breakage detection unit is characterized in that:
the battery pack comprises a shell (1) consisting of a lower shell (101) and an upper shell (102) which are fixedly connected together and are arranged in a sealing manner, a battery unit which is accommodated in the shell (1) and consists of a plurality of battery modules (2), a battery management system (3) and a battery distribution box (4) which are electrically connected with the battery modules (2), a high-voltage plug connector (7) and a low-voltage plug connector (6) which are arranged on the shell (1) and are electrically connected with the battery management system (3) and the battery distribution box (4), and an explosion-proof valve (9) arranged on the shell (1);
the shell damage detection unit comprises a plurality of photosensitive sensors (10) arranged in a shell (1), each photosensitive sensor (10) is electrically connected with a battery distribution box (4) and a battery management system (3) respectively, the photosensitive sensors (10) are distributed below the battery units, the photosensitive sensors (10) are arranged at positions where the battery management system (3) and the battery distribution box (4) are located, and the bottom in the shell (1) can be divided into a plurality of areas corresponding to the photosensitive sensors (10) respectively due to the arrangement of the photosensitive sensors (10).
2. The battery pack with the case breakage detection unit according to claim 1, characterized in that: the lower shell (101) and the upper shell (102) are arranged in a sealing mode through a sealing strip clamped between the lower shell and the upper shell.
3. The battery pack with the case breakage detection unit according to claim 1, characterized in that: the high-voltage plug connector (7) and the low-voltage plug connector (6) are arranged on the lower shell (101).
4. The battery pack with the case breakage detection unit according to claim 1, characterized in that: the explosion-proof valve (9) is arranged on the upper shell (102) and is positioned on one side of the upper shell (102).
5. The battery pack with the case breakage detection unit according to claim 1, characterized in that: the shell (1) is provided with a sealing detection interface (8) which is communicated with the inside of the shell (1) and can be blocked by a blocking piece.
6. The battery pack with the case breakage detection unit according to claim 5, characterized in that: the sealing detection interface (8) is arranged on the lower shell (101) adjacent to the high-voltage plug connector (7) and the low-voltage plug connector (6).
7. The battery pack with the case breakage detection unit according to claim 1, characterized in that: the upper shell (102) and the lower shell (101) are fixedly connected through a plurality of screws arranged along the edges of the upper shell and the lower shell, and a plurality of fixing holes for fixing the battery pack on the vehicle body are formed in the lower shell (101).
8. The battery pack with the case breakage detection unit according to any one of claims 1 to 7, characterized in that: in the shell (1), a cooling plate is arranged at the bottom of the battery unit, and the photosensitive sensors (10) located below the battery unit are distributed below the cooling plate.
9. An electric vehicle, characterized in that: the battery pack with the housing damage detection unit as claimed in any one of claims 1 to 8 is disposed on the electric vehicle, the battery management system (3) is electrically connected to a vehicle control unit of the electric vehicle so as to collect feedback signals of the light-sensitive sensors (10), and the vehicle control unit is configured to enable an instrument desk display screen of the electric vehicle to output warning information in response to the collected feedback signals.
10. The electric vehicle according to claim 9, characterized in that: the electric automobile is internally provided with a vehicle speed sensor and a speed limiter capable of limiting the vehicle speed, the vehicle speed sensor and the speed limiter are electrically connected with the vehicle control unit, and the vehicle control unit is configured to respond to the collected feedback signal and enable the speed limiter to act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868933.XU CN212874579U (en) | 2020-08-31 | 2020-08-31 | Battery pack with shell damage detection unit and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868933.XU CN212874579U (en) | 2020-08-31 | 2020-08-31 | Battery pack with shell damage detection unit and electric automobile |
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| Publication Number | Publication Date |
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| CN212874579U true CN212874579U (en) | 2021-04-02 |
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| CN202021868933.XU Active CN212874579U (en) | 2020-08-31 | 2020-08-31 | Battery pack with shell damage detection unit and electric automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113713A (en) * | 2021-04-08 | 2021-07-13 | 中国第一汽车股份有限公司 | Power battery assembly and vehicle |
| CN113745741A (en) * | 2021-08-27 | 2021-12-03 | 一汽解放汽车有限公司 | Battery box, detection method for damage of battery box and automobile |
| WO2023020401A1 (en) * | 2021-08-17 | 2023-02-23 | 蜂巢能源科技股份有限公司 | Vehicle body floor assembly and vehicle having same |
-
2020
- 2020-08-31 CN CN202021868933.XU patent/CN212874579U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113713A (en) * | 2021-04-08 | 2021-07-13 | 中国第一汽车股份有限公司 | Power battery assembly and vehicle |
| WO2023020401A1 (en) * | 2021-08-17 | 2023-02-23 | 蜂巢能源科技股份有限公司 | Vehicle body floor assembly and vehicle having same |
| CN113745741A (en) * | 2021-08-27 | 2021-12-03 | 一汽解放汽车有限公司 | Battery box, detection method for damage of battery box and automobile |
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