CN115360449A - Detection tool, temperature checking method and energy storage device - Google Patents
Detection tool, temperature checking method and energy storage device Download PDFInfo
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- CN115360449A CN115360449A CN202211131579.6A CN202211131579A CN115360449A CN 115360449 A CN115360449 A CN 115360449A CN 202211131579 A CN202211131579 A CN 202211131579A CN 115360449 A CN115360449 A CN 115360449A
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 238000004146 energy storage Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 67
- 238000005259 measurement Methods 0.000 claims description 15
- 238000003491 array Methods 0.000 claims description 10
- 230000006870 function Effects 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000429 assembly Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The application relates to the technical field of new energy, in particular to a checking method for a detection tool and temperature and an energy storage device. Detect the detection and the check that the frock is applied to battery module's electrical parameter, detect the frock and include: the battery module comprises a tool assembly, a battery module and a control module, wherein the tool assembly is provided with an installation cavity for bearing and installing a plurality of battery cells of the battery module, and the plurality of battery cells in the battery module are electrically connected through a bus sheet; a first temperature sensor group in contact with the plurality of battery cells to detect temperatures of the plurality of battery cells; the second temperature sensor group is in contact with the bus sheet to detect the temperature of the bus sheet; and the battery management system is electrically connected with the first temperature sensor group and the second temperature sensor group respectively, and is used for checking the temperature of the confluence sheet according to the temperature of the battery core and the temperature of the confluence sheet. The application provides a detect frock can prolong battery module's life.
Description
Technical Field
The application relates to the technical field of new energy, in particular to a checking method for a detection tool and temperature and an energy storage device.
Background
Considering the problem of cost, current battery module is when the temperature of measuring electric core, usually installs temperature sensor on the series connection between the electric core or parallelly connected the piece that converges, regards the temperature of piece that converges as the temperature of electric core.
However, because the actual temperature of the battery core cannot be accurately reflected by the temperature of the bus bar, when the battery management system adjusts the temperature of the battery core by controlling the rotation speed of the fan according to the temperature of the bus bar, the service life of the battery core may be shortened, and then the service life of the whole battery module is shortened.
Disclosure of Invention
The application discloses a detection tool, a temperature checking method and an energy storage device, which can prolong the service life of a battery module.
In order to realize above-mentioned purpose, the utility model discloses a detect frock in the first aspect, the detection and the check of the electrical parameter that detect frock is applied to battery module, it includes to detect the frock:
the tool assembly is provided with an installation cavity for bearing and installing a plurality of battery cells of the battery module, wherein the battery cells in the battery module are electrically connected through a bus bar;
a first temperature sensor group in contact with the plurality of cells to detect temperatures of the plurality of cells;
a second temperature sensor group in contact with the bus bar to detect a temperature of the bus bar;
the battery management system is electrically connected with the first temperature sensor group and the second temperature sensor group respectively, and the battery management system is used for checking the temperature of the bus sheet according to the temperature of the battery core and the temperature of the bus sheet.
Since the plurality of battery cells are electrically connected through the bus bar, after the battery cells start to work, the bus bar starts to generate heat, and after the bus bar starts to generate heat, because the second temperature sensor group is in contact with the bus bar, the temperature of the bus bar can be detected through the second temperature sensor group, and it can be understood that a deviation exists between the temperature of the bus bar and the temperature of the battery cells.
Then, since the first temperature sensor group is in contact with the plurality of battery cells, the temperature of the battery cells can be detected by the first temperature sensor group. Obviously, the temperature detected by the first temperature sensor group is closer to the actual temperature of the battery cell than the temperature detected by the second temperature sensor group.
Because the battery management system is electrically connected with the first temperature sensor group and the second temperature sensor group respectively, the battery management system can acquire the temperature of the battery core detected by the first temperature sensor group and the temperature of the bus bar detected by the second temperature sensor group, and can check the temperature of the bus bar according to the temperature of the battery core to obtain a check function relation between the temperature of the bus bar and the temperature of the battery core, that is, one bus bar temperature corresponds to one battery core temperature. After the check function relation is obtained, the temperature of the battery core can be calculated through the temperature of the bus sheet. Like this, when making the battery module, the arrangement of a plurality of electric cores is the same with this arrangement that detects electric core in the frock in the battery module, even in order to save cost, only set up the second temperature sensor group that is used for detecting the conflux piece temperature in the battery module and not set up the first temperature sensor group that is used for detecting electric core temperature, still can calculate the temperature of electric core according to the temperature of conflux piece and check function relational expression, then battery management system can come the rotational speed of control fan according to the temperature of this calculation electric core, so set up, when can reduce the manufacturing cost of battery module, can fall the temperature of electric core to the temperature interval of suitable electric core work, therefore can improve the life of electric core, thereby can improve the life of whole battery module.
Optionally, the detection tool further includes a fan, the fan is electrically connected to the battery management system, and the battery management system is configured to control a rotation speed of the fan according to the temperature of the battery core.
When the detection tool further comprises a fan, the battery management system can cool the battery core according to the rotating speed of the temperature control fan of the battery core detected by the first temperature sensor group, so that the temperature of the battery core is kept in a temperature interval suitable for the operation of the battery core, the service life of the battery core can be prolonged, and the service life of the whole battery module can be prolonged.
Optionally, the number of the mounting cavities is multiple, the multiple mounting cavities correspond to the multiple battery cells one to one, each mounting cavity is used for mounting the corresponding battery cell, at least part of the structure of each battery cell is exposed out of the corresponding mounting cavity, and the first temperature sensor group is in contact with at least part of the structure to detect the temperature of the battery cell.
Because a plurality of battery cores are respectively installed in the installation cavities in a one-to-one correspondence manner, at least part of the structure of each battery core exposes the corresponding installation cavity, that is to say, at least part of the structure of each battery core is not shielded by the tool assembly, so that the purpose of contacting the first temperature sensor group with the battery core can be achieved by contacting the first temperature sensor group with at least part of the structure. That is, by exposing at least a part of the structure of each cell out of the corresponding mounting cavity, the first temperature sensor group can be more conveniently contacted with the cell, and thus the first temperature sensor group can more conveniently detect the temperature of the cell.
Optionally, the tooling assembly includes:
the plurality of subassemblies of assembling, it is a plurality of the subassembly of assembling is arranged and interconnect forms the subassembly array of assembling along first direction array, every the subassembly of assembling all has the installation cavity, first temperature sensor group sets up on the subassembly of assembling.
Because every subassembly of assembling all has the installation cavity, consequently, through making a plurality of subassemblies of assembling arrange and interconnect forms the subassembly array of assembling along first direction array, can be so that the installation cavity arranges along first direction array. Then, since the mounting cavity is used for mounting the cells, the cells may be arrayed in the first direction. Through making electric core arrange along first direction array, can be so that the electric core is more regular along arranging of first direction. It can be understood that, under the general condition, battery module's electric core is arranged along certain orientation array, consequently, through making a plurality of subassemblies of assembling arrange and interconnect forms the subassembly array of assembling along first orientation array, can be so that this detection frock is applicable to more battery modules, and the commonality is better.
Optionally, the assembled subassembly array forms multiple layers along a second direction array, the mounting cavities in the assembled subassembly array are aligned with each other in two adjacent layers, a gap is formed between the two adjacent layers of assembled subassembly arrays, the detection head of the first temperature sensor group is located in the gap, and the second direction is perpendicular to the direction of the plane where the assembled subassembly array is located.
Through making the installation cavity in the subassembly array is assembled to adjacent two-layer to adjust well mutually, can avoid the condition emergence that the installation cavity in the subassembly array is assembled to adjacent two-layer dislocation of each other, can make the installation to the installation cavity that electric core can be better. Through making adjacent two-layer subassembly array of assembling have the clearance between, can be convenient for dispel the heat to electric core better. Because the structure of the battery cell that the clearance corresponds spills the installation cavity, consequently, be located the clearance through making the detection head of first temperature sensor group, can be so that the temperature of battery cell can be detected to the detection head of first temperature sensor group.
Optionally, each of the assembled subassemblies has a plurality of the mounting cavities, the mounting cavities are arrayed along a third direction, and the third direction is a direction perpendicular to the first direction and perpendicular to the second direction.
Through making every subassembly of assembling have a plurality of installation cavities to make a plurality of installation cavities arrange along third direction array, on the one hand, can make the quantity of assembling the installation cavity on the subassembly more, make one assemble the subassembly and can obtain a plurality of installation cavities simultaneously. On the other hand, can be so that this detection frock can be applicable to more battery module, the commonality is better.
Optionally, the sub-assembly comprises:
a first assembled member;
the second assembling piece, the second assembling piece with first assembling piece is followed the relative setting of first direction and interconnect, the second assembling piece with first assembling piece is assembled jointly and is formed the installation cavity, first temperature sensor group sets up first assembling piece and/or on the second assembling piece.
When the sub assembly comprises the first assembly piece and the second assembly piece, the second assembly piece and the first assembly piece are oppositely arranged in the first direction and are mutually connected, so that an installation cavity can be formed, the mode of forming the installation cavity is very simple, and the manufacturing cost of the sub assembly can be reduced to a certain extent.
Through making first temperature sensor group set up on first piece and second piece, can be so that first temperature sensor group is more close to the installation cavity, like this, is convenient for carry out the measuring of temperature to the electric core in the installation cavity.
Optionally, the first assembly piece and the second assembly piece are E-shaped assembly pieces, and include a vertical portion and a connection to three horizontal portions on the vertical portion, the free ends of the three horizontal portions of the first assembly piece and the free ends of the three horizontal portions of the second assembly piece are along the first direction is oppositely arranged and interconnected to form two installation cavities, each installation cavity corresponds to the vertical portion and the horizontal portion, the first temperature sensor set includes a plurality of first temperature sensors, and each first temperature sensor set in the installation cavity.
Through making first piece and second piece be the E shape piece, only need to make the free end of the three horizontal portion of first piece and the free end of the three horizontal portion of second piece set up and interconnect along first direction relatively, just can form two installation chambeies, the very ingenious of mode that forms the installation chamber. All be provided with the mounting hole through perpendicular portion and the horizontal portion that correspond at every mounting cavity to make all set up first temperature sensor in every mounting hole, can detect the temperature on a plurality of surfaces of electric core through first temperature sensor, consequently, can make the temperature of electric core detect more accurate.
Optionally, the transverse portion includes first transverse portions located at two ends of the vertical portion, a connecting portion is arranged on the first transverse portion, the tool assembly further includes a connecting plate, and the connecting portions are connected with each other through the connecting plate.
Because connecting portion set up on the first horizontal portion that is located the both ends of vertical section, a plurality of connecting portion interconnect through the connecting plate, consequently, the connecting plate can be connected first built-up piece and second built-up piece and form and assemble the subassembly and can be connected a plurality of subassemblies of assembling and form and assemble the subassembly array, that is, can be established ties first built-up piece and second built-up piece through the connecting plate and form and assemble the subassembly array, need not to connect first built-up piece and second built-up piece alone and form a plurality of mutually independent subassemblies of assembling, connect a plurality of mutually independent subassemblies of assembling again and form and assemble the subassembly array, structural design is ingenious, the connection step has been simplified.
Optionally, the detection tool further comprises a distance measuring sensor, the distance measuring sensor is arranged on the first assembly piece and located between two adjacent installation cavities, the distance measuring sensor is further electrically connected with the battery management system, and the distance measuring sensor is used for detecting the deformation of the installation cavity corresponding to the first assembly piece.
Through the deflection of detection installation cavity that distance measuring sensor can be accurate, after detecting the deflection of installation cavity, can calculate the bulging force of electric core according to the deflection of installation cavity, like this, when the structure of design battery module, the power is tied up in design that can be reasonable to the inflation condition that makes electric core is in reasonable within range or not inflation, and then makes the better superiority of performance of whole battery module.
Optionally, the detection tool further comprises a wind speed measuring sensor, the wind speed measuring sensor is arranged on the tool assembly and electrically connected with the battery management system, and the battery management system is further configured to control the rotating speed of the fan according to the wind speed detected by the wind speed measuring sensor and the temperature of the battery core.
By arranging the wind speed measuring sensor on the tool assembly, the wind speed at the position where the wind speed measuring sensor is located can be detected through the wind speed measuring sensor, and meanwhile, based on the description, the temperature of the battery cell can be detected through the first temperature sensor group, so that the battery management system can acquire the corresponding relation between the wind speed at the position where the wind speed measuring sensor is located and the temperature of the battery cell.
After battery management system acquires the corresponding relation between the wind speed of wind speed measurement sensor position department and the temperature of electric core, can be according to the wind speed of wind speed measurement sensor position department and release the temperature of electric core in reverse, like this, when the structure of design battery module, just including the wind speed measurement sensor and not including first temperature sensor group for the battery module, the temperature of electric core is released in reverse according to the wind speed of wind speed measurement sensor position department equally, can reduce the manufacturing cost of battery module. Meanwhile, theoretical basis can be provided for the design of the subsequent battery module air duct.
In a second aspect, the present application discloses a temperature checking method, which is applied to the detection tool of any one of the first aspects, and the method includes:
the battery management system acquires the temperature of the battery core through the first temperature sensor group and acquires the temperature of the bus bar through the second temperature sensor group;
the battery management system generates a check function according to the temperature of the battery core and the temperature of the bus bar;
the battery management system checks the temperature of the bus bar according to the temperature of the bus bar and the check function
The temperature of the battery core can be obtained by firstly generating a check function according to the temperature of the battery core and the temperature of the bus bar and then checking the temperature of the bus bar according to the temperature of the bus bar and the check function. Therefore, only be provided with the second temperature sensor group that is used for detecting the manifold piece temperature at the battery module and not set up the condition that is used for detecting the first temperature sensor group of electric core temperature, still can calculate the temperature of electric core according to the temperature of manifold piece and check functional relation, then battery management system can come the rotational speed of control fan according to the temperature of this calculated electric core, so set up, when can reduce the manufacturing cost of battery module, can fall the temperature of electric core to the temperature interval of suitable electric core work, therefore can improve the life of electric core, thereby can improve the life of whole battery module.
In a third aspect, the present application discloses an energy storage device comprising:
the detection tool of any one of the first aspect;
the battery cores are installed in the installation cavity of the detection tool.
Because the detection tool can reduce the temperature of the battery cell to the temperature range suitable for the battery cell to work, the service life of the battery cell can be prolonged, and on the basis, when the detection tool is applied to the energy storage device, the service life of the energy storage device can be prolonged.
Compared with the prior art, the beneficial effect of this application lies in:
because the battery management system is electrically connected with the first temperature sensor group and the second temperature sensor group respectively, the battery management system can acquire the temperature of the battery core detected by the first temperature sensor group and the temperature of the bus bar detected by the second temperature sensor group, and can check the temperature of the bus bar according to the temperature of the battery core to obtain a check function relation between the temperature of the bus bar and the temperature of the battery core, that is, one bus bar temperature corresponds to one battery core temperature. After the check function relation is obtained, the temperature of the battery core can be calculated through the temperature of the bus bar. Like this, when making the battery module, the arrangement of a plurality of electric cores is the same with this arrangement that detects electric core in the frock in the battery module, even in order to save cost, only set up the second temperature sensor group that is used for detecting the conflux piece temperature in the battery module and not set up the first temperature sensor group that is used for detecting electric core temperature, still can calculate the temperature of electric core according to the temperature of conflux piece and check function relational expression, then battery management system can come the rotational speed of control fan according to the temperature of this calculation electric core, so set up, when can reduce the manufacturing cost of battery module, can fall the temperature of electric core to the temperature interval of suitable electric core work, therefore can improve the life of electric core, thereby can improve the life of whole battery module.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a front view of a detection tool provided in an embodiment of the present application, in which a battery cell (an energy storage device) is installed;
fig. 2 is a top view of the detection tool in fig. 1 with a battery cell (energy storage device) installed therein;
fig. 3 is a left side view of the detection tool in fig. 1 with a battery cell (energy storage device) installed therein;
FIG. 4 is a top view of a tooling assembly provided in an embodiment of the present application;
FIG. 5 is an exploded view of a sub-assembly provided in accordance with an embodiment of the present disclosure;
fig. 6 is a flowchart of a temperature checking method according to an embodiment of the present application.
Description of the main reference numerals
1-tooling assembly; 10-a mounting cavity; 11-assembling the subassembly; 110-an array of sub-assemblies; 111-a first assembly; 1110 — mounting holes; 1111-vertical section; 1112-a transverse portion; 11121-first transverse portion; 11121 a-connection part; 112-a second assembly;
2-a first temperature sensor group; 21-a first temperature sensor; 22-wind speed measurement sensor;
3-a second temperature sensor group;
4-a fan;
5-a battery management system;
6-connecting plates;
100-electric core; 101-confluence piece; 200-detecting a tool;
j-gap.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.
Example one
Fig. 1 is a front view of a detection tool provided by an embodiment of the application and having a battery cell (energy storage device) mounted therein, fig. 2 is a top view of the detection tool in fig. 1 having the battery cell (energy storage device) mounted therein, and fig. 3 is a left side view of the detection tool in fig. 1 having the battery cell (energy storage device) mounted therein.
Referring to fig. 1, 2 and 3, the inspection tool 200 includes: the system comprises a tool assembly 1, a first temperature sensor group 2, a second temperature sensor group 3 and a battery management system 5.
Referring to fig. 4, the tool assembly 1 has a mounting cavity 10 for carrying a plurality of battery cells 100 for mounting a battery module. Referring to fig. 1, 2 and 3, a plurality of battery cells 100 of the battery module are electrically connected through a bus bar 101. The first temperature sensor group 2 is in contact with the plurality of battery cells 100 to detect the temperatures of the plurality of battery cells 100. The second temperature sensor group 3 is in contact with the manifold block 101 to detect the temperature of the manifold block 101. The battery management system 5 is electrically connected to the first temperature sensor group 2 and the second temperature sensor group 3 (lines for electrical connection are not shown in the figure), and the battery management system 5 is configured to check the temperature of the bus bar 101 according to the temperature of the battery cell 100 and the temperature of the bus bar 101.
In the embodiment of the application, since the plurality of battery cells 100 are electrically connected through the bus bar 101, after the battery cells 100 start to operate, the bus bar 101 starts to generate heat, and after the bus bar 101 starts to generate heat, because the second temperature sensor group 3 is in contact with the bus bar 101, the temperature of the bus bar 101 can be detected by the second temperature sensor group 3, and it can be understood that there is a deviation between the temperature of the bus bar 101 and the temperature of the battery cells 100.
Then, since the first temperature sensor group 2 is in contact with the plurality of battery cells 100, the temperature of the battery cells 100 can be detected by the first temperature sensor group 2. Obviously, the temperature detected by the first temperature sensor group 2 is closer to the actual temperature of the battery cell 100 than the temperature detected by the second temperature sensor group 3.
Since the battery management system 5 is electrically connected to the first temperature sensor group 2 and the second temperature sensor group 3, the battery management system 5 may obtain the temperature of the battery cell 100 detected by the first temperature sensor group 2 and the temperature of the bus bar detected by the second temperature sensor group 3, and may check the temperature of the bus bar 101 according to the temperature of the battery cell 100 to obtain a check function relation between the temperature of the bus bar 101 and the temperature of the battery cell 100, that is, the temperature of one bus bar 101 corresponds to the temperature of one battery cell 100. After the functional relation is checked, the temperature of the battery cell 100 may be calculated from the temperature of the bus bar 101. Like this, when making the battery module, when the arrangement of a plurality of electric cores in the battery module is the same with the arrangement of electric core in this detection frock 200, in order to save cost, only set up the second temperature sensor group 3 that is used for detecting the temperature of confluence piece 101 in the battery module and not set up the first temperature sensor group 2 that is used for detecting the temperature of electric core 100, still can calculate the temperature of electric core 100 according to the temperature of confluence piece 101 and check function relational expression, then battery management system 5 can control the rotational speed of fan 4 according to the temperature of this electric core 100 that obtains of calculation, so set up, when can reduce the manufacturing cost of battery module, can reduce the temperature of electric core 100 to the temperature interval that suitable electric core 100 worked, therefore can improve the life of electric core, thereby can improve the life of whole battery module.
For example, it is assumed that when the temperature of the bus bar 101 detected by the second temperature sensor group 3 is 35 ℃, the temperature of the battery cell detected by the first temperature sensor group 2 is 34 ℃. Then, only the second temperature sensor group 3 for detecting the temperature of the bus bar 101 is provided in the battery module, and when the temperature detected by the second temperature sensor group 3 is 35 ℃, the temperature of the battery cell can be calculated to be 34 ℃. Then, the battery management system 5 may control the rotation speed of the fan 4 according to 34 ℃, and obviously, the service life of the battery cell may be improved.
It should be noted that, in addition to detecting the temperature of the battery cell by contacting with the battery cell 100, the first temperature sensor group 2 may also detect the temperature of the battery cell by other means, for example, the temperature of the battery cell 100 may be detected by infrared detection. When the temperature of battery cell 100 is detected by using the infrared detection method, the first temperature sensor group 2 does not need to contact with battery cell 100 (when the battery cell 100 is a cube, it does not need to contact with six surfaces of the battery cell 100), so that the temperature of the battery cell 100 can be detected, which is very convenient.
When the temperature of the battery cell 100 is detected by making the first temperature sensor group 2 contact with the battery cell 100, the first temperature sensor group 2 may directly contact with the battery cell 100, so that the detection result is more accurate. When the temperature of the battery cell 100 is detected in such a manner that the first temperature sensor group 2 does not need to be in contact with the battery cell 100, the detection is more convenient.
In some embodiments, referring to fig. 2, the detection tool 200 further includes a fan 4, the fan 4 is electrically connected to a battery management system 5, and the battery management system 5 is configured to control the rotation speed of the fan 4 according to the temperature of the battery cell.
When detecting frock 200 still includes fan 4, battery management system 5 can cool down for electric core according to the rotational speed of the temperature control fan 4 of the electric core that first temperature sensor group 2 detected for the temperature of electric core 100 keeps in the temperature interval of suitable electric core 100 work, and then can improve the life of electric core, thereby can improve the life of whole battery module.
The number of the fans 4 may be 1, 2, 3, or the like, which is not limited in the embodiment of the present application.
In some embodiments, referring to fig. 1 and fig. 4, the number of the mounting cavities 10 is multiple, the multiple mounting cavities 10 correspond to the multiple battery cells 100 one to one, each mounting cavity 10 is used for mounting a corresponding battery cell 100, at least a part of the structure of each battery cell 100 exposes the corresponding mounting cavity 10, and the first temperature sensor group 2 contacts with at least a part of the structure to detect the temperature of the battery cell 100.
In this embodiment, since the plurality of battery cells 100 are respectively mounted in the plurality of mounting cavities 10 in a one-to-one correspondence manner, at least a part of the structure of each battery cell 100 is exposed out of the corresponding mounting cavity 10, that is, at least a part of the structure of each battery cell 100 is not covered by the tooling assembly 1, so that the purpose of contacting the first temperature sensor group 2 with the battery cell 100 can be achieved by contacting the first temperature sensor group 2 with at least a part of the structure. That is, by exposing at least a portion of the structure of each battery cell 100 to the corresponding mounting cavity 10, the first temperature sensor group 2 can be more conveniently contacted with the battery cell 100, and thus the first temperature sensor group 2 can more conveniently detect the temperature of the battery cell 100.
In some embodiments, referring to fig. 1 and 4, the tooling assembly 1 includes: the temperature sensor assembly comprises a plurality of assembly sub-assemblies 11, wherein the assembly sub-assemblies 11 are arrayed along a first direction (X-axis direction in fig. 4) and are connected with one another to form an assembly sub-assembly array 110, each assembly sub-assembly 11 is provided with a mounting cavity 10, and a first temperature sensor group 2 is arranged on the assembly sub-assemblies 11.
Since each of the sub-assemblies 11 has the mounting cavity 10, the mounting cavities 10 may be arrayed in the first direction by arranging a plurality of sub-assemblies 11 in an array in the first direction and connecting them to form the sub-assembly array 110. Next, since the mounting cavities 10 are used to mount the battery cells 100, the battery cells 100 may be arrayed in the first direction. By arranging the battery cells 100 in an array along the first direction, the arrangement of the battery cells 100 along the first direction may be relatively regular. It can be understood that, under the general condition, the electric cores of the battery module are arranged along a certain direction array, and therefore, by arranging a plurality of the assembled subassemblies 11 along the first direction array and connecting them to form the assembled subassembly array 110, the detection tool 200 can be applied to more battery modules, and the universality is better.
In some embodiments, referring to fig. 1, the sub-assembly arrays 110 are arrayed in multiple layers along a second direction (Z direction in fig. 1), the mounting cavities 10 in two adjacent layers of the sub-assembly arrays 110 are aligned with each other, and a gap J is formed between two adjacent layers of the sub-assembly arrays 110, the detection head of the first temperature sensor group 2 is located in the gap J, and the second direction is a direction perpendicular to the plane of the sub-assembly arrays 110.
Through making the installation cavity 10 in the subassembly array 110 is assembled to two adjacent layers mutually align, the condition that the installation cavity 10 in the subassembly array 110 is assembled to two adjacent layers can be avoided and misplaced mutually takes place, can make the better installation of electric core 100 to the installation cavity 10 in. By providing the gap J between the two adjacent layers of the assembled subassembly arrays 110, heat dissipation of the battery cell 100 can be better facilitated. Since the structure of the battery cell 100 corresponding to the gap J leaks out of the mounting cavity 10, the detection head of the first temperature sensor group 2 can detect the temperature of the battery cell by being located in the gap J.
Further, in some embodiments, referring to fig. 4 and 5, each of the assembled subassemblies 11 has a plurality of mounting cavities 10, and the mounting cavities 10 are arrayed along a third direction (Y-axis direction in fig. 4), which is a direction perpendicular to the first direction and perpendicular to the second direction.
By enabling each assembled subassembly 11 to be provided with a plurality of mounting cavities 10 and enabling the plurality of mounting cavities 10 to be arrayed in the third direction, on one hand, the number of the mounting cavities 10 on the assembled subassembly 11 can be increased, and a plurality of mounting cavities 10 can be obtained by manufacturing one assembled subassembly 11. On the other hand, the detection tool 200 can be suitable for more battery modules, and the universality is better.
Referring to fig. 4, each of the assembled subassemblies 11 has mounting cavities 10, and the number of the mounting cavities 10 may be 2, or 3 or 4, and the like, which is not limited in the embodiment of the present application.
In some embodiments, referring to fig. 5, the sub-assembly 11 comprises: a first assembly 111 and a second assembly 112. Wherein the second assembly piece 112 and the first assembly piece 111 are arranged opposite to each other along the first direction (X-axis direction in fig. 5) and connected to each other, the second assembly piece 112 and the first assembly piece 111 are assembled together to form the installation cavity 10, and the first temperature sensor 2 is arranged on the first assembly piece 111 and the second assembly piece 112.
When the sub-assembly 11 includes the first assembly member 111 and the second assembly member 112, the installation cavity 10 can be formed by oppositely arranging and connecting the second assembly member 112 and the first assembly member 111 along the first direction, and the manner of forming the installation cavity 10 is very simple, so that the manufacturing cost of the sub-assembly 11 can be reduced to a certain extent.
By arranging the first temperature sensor group 2 on the first assembled part 111 and the second assembled part 112, the first temperature sensor group 2 can be closer to the installation cavity 10, so that the temperature of the battery cell 100 in the installation cavity 10 can be detected conveniently.
Of course, the first temperature sensor set 2 may be disposed on only one of the first assembly member 111 and the second assembly member 112, which is not limited in this embodiment.
In some embodiments, referring to fig. 2 and fig. 5, each of the first assembly piece 111 and the second assembly piece 112 is an E-shaped assembly piece, and includes an upright portion 1111 and three transverse portions 1112 connected to the upright portion 1111, free ends of the three transverse portions 1112 of the first assembly piece 111 and free ends of the three transverse portions 1112 of the second assembly piece 112 are oppositely disposed along a first direction and connected to each other to form two installation cavities 10, each of the installation cavities 10 has an installation hole 1110 on the upright portion 1111 and the transverse portion 1112, the first temperature sensor set 2 includes a plurality of first temperature sensors 21, and each of the installation holes 1110 has a first temperature sensor 21.
By making the first assembly piece 111 and the second assembly piece 112 both be E-shaped assembly pieces, only the free ends of the three transverse portions 1112 of the first assembly piece 111 and the free ends of the three transverse portions 1112 of the second assembly piece 112 need to be oppositely arranged and connected to each other along the first direction, and just two installation cavities 10 can be formed, so that the mode of forming the installation cavities 10 is very ingenious. By providing the mounting holes 1110 on the vertical portion 1111 and the horizontal portion 1112 corresponding to each mounting cavity 10, and providing the first temperature sensor 21 in each mounting hole 1110, the temperatures of the surfaces of the battery cell 100 can be detected by the first temperature sensor 21, and therefore, the temperature of the battery cell 100 can be detected more accurately.
It should be noted that the free ends of the three transverse portions 1112 of the first assembly piece 111 and the free ends of the three transverse portions 1112 of the second assembly piece 112 can be connected to each other in various ways, and in one possible implementation, referring to fig. 4 and 5, the transverse portions 1112 include first transverse portions 11121 at two ends of the vertical portions 1111, the first transverse portions 11121 are provided with connecting portions 11121a, the tool assembly 1 further includes a connecting plate 6, and the connecting portions 11121a are connected to each other by the connecting plate 6.
Since the connecting portions 11121a are disposed on the first transverse portions 11121 at two ends of the vertical portion 1111, and the connecting portions 11121a are connected to each other by the connecting plates 6, the connecting plates 6 can connect the first assembly members 111 and the second assembly members 112 to form the assembly sub-assembly 11, and can connect the assembly sub-assemblies 11 to form the assembly sub-assembly array 110, that is, the connecting plates 6 can connect the first assembly members 111 and the second assembly members 112 to form the assembly sub-assembly array 110 in series, and it is not necessary to separately connect the first assembly members 111 and the second assembly members 112 to form a plurality of independent assembly sub-assemblies 11, and then connect the plurality of independent assembly sub-assemblies 11 to form the assembly sub-assembly array 110.
Referring to fig. 1, the connecting portion 11121a may be a nut, which has a simple structure and is reliably connected, so that the manufacturing cost of the connecting portion 11121a may be reduced. Of course, the connecting portion 11121a may have other possible structures, for example, the connecting portion 11121a may be a threaded hole, and the like, which is not limited in this embodiment of the present application.
When the connection portions 11121a are nuts, in order to connect the connection portions 11121a to each other through the connection plate 6, in particular, through holes corresponding to the connection portions 11121a one to one may be provided on the connection plate 6, and screws pass through the through holes to be screwed with the corresponding connection portions 11121a, so that the connection portions 11121a are connected to each other through the connection plate 6.
It is worth noting that the circumstances of inflation can appear after electric core 100 uses for a long time for installation cavity 10 takes place to warp, for the deformation condition of accurate detection installation cavity 10, so that provide the theoretical foundation for the structural design of follow-up battery module, for example, need how big binding force just can avoid installation cavity 10 to take place deformation or deformation at reasonable within range etc.. Detect frock 200 still includes range finding sensor, and range finding sensor sets up on first piece 111 and is located between two adjacent installation cavity 10, and range finding sensor still is connected with battery management system 5 electricity, and range finding sensor is used for detecting the deflection of the installation cavity 10 that first piece 111 corresponds. So set up, through the deflection of detection installation cavity 10 that distance measuring sensor can be accurate, after detecting the deflection of installation cavity 10, can calculate electric core 100's bulging force according to the deflection of installation cavity 10, like this, when the structure of design battery module, the power is tied up in design that can be reasonable to make electric core 100's the inflation condition be in reasonable within range or not inflation, and then make the better superiority of performance of whole battery module.
Further, in some embodiments, referring to fig. 1, the detection tool 200 further includes an air speed measuring sensor 22, the air speed measuring sensor 22 is disposed on the tool assembly 1 and electrically connected to the battery management system 5, and the battery management system 5 is further configured to control the rotation speed of the fan 4 according to the air speed detected by the air speed measuring sensor 22 and the temperature of the battery cell 100. By arranging the wind speed measuring sensor 22 on the tooling assembly 1, the wind speed at the position of the wind speed measuring sensor 22 can be detected, and meanwhile, based on the above description, the temperature of the battery cell 100 can be detected by the first temperature sensor group 2, so that the battery management system 5 can acquire the corresponding relationship between the wind speed at the position of the wind speed measuring sensor 22 and the temperature of the battery cell 100.
After battery management system 5 acquires the corresponding relation between the wind speed at the position of wind speed measurement sensor 22 and the temperature of electric core 100, the temperature of electric core 100 can be reversely pushed out according to the wind speed at the position of wind speed measurement sensor 22, thus, when the structure of the battery module is designed, the battery module only comprises wind speed measurement sensor 22 and does not comprise first temperature sensor group 2, the temperature of electric core 100 can be reversely pushed out according to the wind speed at the position of wind speed measurement sensor 22, and the manufacturing cost of the battery module can be reduced. Meanwhile, theoretical basis can be provided for the design of the subsequent battery module air duct.
For example, it is assumed that when the wind speed at the position of the wind speed measurement sensor 22 is 10m/s, the battery management system 5 detects that the temperature of the battery cell 100 is 34 ℃. Then, when designing the structure of the battery module, when the battery module includes only the wind speed measurement sensor 22 and does not include the first temperature sensor group 2, assuming that the wind speed at the position of the wind speed measurement sensor 22 is 10m/s, it is possible to reversely deduce that the temperature of the battery cell 100 is 34 ℃.
Example two
Fig. 6 is a flowchart of a temperature checking method according to an embodiment of the present application. Referring to fig. 6, the method includes:
step 601: the battery management system acquires the temperature of the battery core through the first temperature sensor group, and acquires the temperature of the bus bar through the second temperature sensor group.
Specifically, the temperature of the battery cell may be detected by the first temperature sensor group, and after the first temperature sensor group detects the temperature of the battery cell, the first temperature sensor group may send the temperature of the battery cell to the battery management system, so that the battery management system obtains the temperature of the battery cell.
Similarly, the battery management system may obtain the temperature of the bus bar by a method similar to the method for obtaining the temperature of the battery core, and details are not repeated here.
The battery management system can obtain the temperatures of the battery cells and the temperatures of the bus bars corresponding to the temperatures of the battery cells at different moments through the method, and obtain the temperatures of a plurality of groups of battery cells and the temperatures of a plurality of groups of bus bars corresponding to the temperatures of the plurality of groups of battery cells one to one.
For example, assuming that the temperature of the battery cell acquired by the battery management system at the first time is 25 ℃, the temperature of the bus bar is 26 ℃, the temperature of the battery cell acquired at the second time is 26 ℃, the temperature of the bus bar is 27 ℃, the temperature of the battery cell acquired at the third time is 23 ℃, and the temperature of the bus bar is 25 ℃, then the temperatures of the three groups of battery cells and the temperatures of the three groups of bus bars corresponding to the temperatures of the three groups of battery cells one to one may be obtained: (25 ℃ C., 26 ℃ C.), (26 ℃ C., 27 ℃ C.), (23 ℃ C., 25 ℃ C.).
Step 602: and the battery management system generates a check function according to the temperature of the battery core and the temperature of the bus bar.
Specifically, the battery management system may perform data fitting according to the temperatures of the plurality of sets of battery cells and the temperatures of the plurality of sets of bus bars in one-to-one correspondence with the temperatures of the plurality of sets of battery cells, and generate the check function.
For example, according to the exemplary embodiment in step 201, the temperatures of the three groups of cells and the temperatures of the three groups of bus bars corresponding to the temperatures of the three groups of cells one to one are assumed as follows: (25 ℃,26 ℃), (26 ℃,27 ℃), (23 ℃,25 ℃), then data fitting can be performed from the three sets of data to obtain the check functions described above.
It is to be understood that, in order to make the calibration function more accurately reflect the correspondence between the temperatures of the battery cells and the temperatures of the bus bars, the temperatures of the battery cells and the temperatures of the bus bars may be obtained in more groups, for example, 8 groups or 9 groups may be obtained.
Step 603: and the battery management system checks the temperature of the bus bar according to the temperature of the bus bar and the check function.
The temperature of the bus bar can be substituted into the check function to obtain the temperature of the battery core, and the temperature of the bus bar is replaced by the temperature of the battery core, so that the purpose of checking the temperature of the bus bar can be achieved.
In the embodiment of the application, the check function is generated according to the temperature of the battery core and the temperature of the bus bar, and then the temperature of the bus bar is checked according to the temperature of the bus bar and the check function, so that the temperature of the battery core can be obtained. Therefore, under the condition that the battery module is only provided with the second temperature sensor group for detecting the temperature of the junction piece and is not provided with the first temperature sensor group for detecting the temperature of the battery core, the temperature of the battery core can still be calculated according to the temperature of the junction piece and the checking function relation, and then the battery management system can control the rotating speed of the fan according to the calculated temperature of the battery core.
EXAMPLE III
The embodiment of the application provides an energy storage device's schematic structure. Referring to fig. 2 and 4, the energy storage device includes: the battery detection tool comprises a detection tool 200 and a plurality of battery cells 100, wherein the battery cells are installed in an installation cavity 10 of the detection tool 200.
The structure of the detection tool 200 may be the same as that of the detection tool 200 in the first embodiment, and may have the same or similar beneficial effects, and reference may be specifically made to the description of the detection tool 200 in the first embodiment, which is not repeated herein.
In this application embodiment, because detect frock 200 and can fall the temperature of electric core 100 to the temperature interval of suitable electric core 100 work, can improve the life of electric core, based on this, when this detection frock 200 is applied to energy memory, can improve energy memory's life.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (13)
1. The utility model provides a detect frock, its characterized in that, it is applied to battery module's electrical parameter's detection and check to detect the frock, it includes to detect the frock:
the tooling assembly is provided with an installation cavity for bearing and installing a plurality of battery cells of the battery module, wherein the battery cells in the battery module are electrically connected through a bus bar;
a first temperature sensor group in contact with the plurality of cells to detect temperatures of the plurality of cells;
a second temperature sensor group in contact with the bus bar to detect a temperature of the bus bar;
the battery management system is electrically connected with the first temperature sensor group and the second temperature sensor group respectively, and the battery management system is used for checking the temperature of the bus sheet according to the temperature of the battery core and the temperature of the bus sheet.
2. The detection tool according to claim 1, further comprising a fan, wherein the fan is electrically connected to the battery management system, and the battery management system is configured to control a rotation speed of the fan according to the temperature of the battery cell.
3. The detection tool according to claim 1, wherein the number of the mounting cavities is multiple, the mounting cavities correspond to the battery cells one to one, each mounting cavity is used for mounting a corresponding battery cell, at least part of the structure of each battery cell is exposed out of the corresponding mounting cavity, and the first temperature sensor group is in contact with at least part of the structure to detect the temperature of the battery cell.
4. The detection tool according to any one of claims 1 to 3, wherein the tool assembly comprises:
the plurality of subassemblies of assembling, it is a plurality of the subassembly of assembling is arranged and interconnect forms the subassembly array of assembling along first direction array, every the subassembly of assembling all has the installation cavity, first temperature sensor group sets up on the subassembly of assembling.
5. The detection tool according to claim 4, wherein the assembled subassembly arrays form a plurality of layers along a second direction array, the installation cavities in two adjacent layers of the assembled subassembly arrays are aligned with each other, a gap is formed between two adjacent layers of the assembled subassembly arrays, the detection head of the first temperature sensor group is located in the gap, and the second direction is a direction perpendicular to the plane of the assembled subassembly arrays.
6. The detection tool according to claim 5, wherein each of the assembled subassemblies has a plurality of the mounting cavities, the mounting cavities are arrayed along a third direction, and the third direction is a direction perpendicular to the first direction and perpendicular to the second direction.
7. The detection tool of claim 4, wherein the sub-assembly comprises:
a first assembly member;
the second assembly piece and the first assembly piece are oppositely arranged along the first direction and are mutually connected, the second assembly piece and the first assembly piece are jointly assembled to form the installation cavity, and the first temperature sensor group is arranged on the first assembly piece and/or the second assembly piece.
8. The detection tool according to claim 7, wherein the first assembled part and the second assembled part are E-shaped assembled parts and comprise vertical parts and three transverse parts connected to the vertical parts, free ends of the three transverse parts of the first assembled part and free ends of the three transverse parts of the second assembled part are oppositely arranged along the first direction and are connected with each other to form two installation cavities, installation holes are formed in the vertical parts and the transverse parts corresponding to the installation cavities, the first temperature sensor group comprises a plurality of first temperature sensors, and the first temperature sensors are arranged in the installation holes.
9. The detection tool according to claim 8, wherein the transverse portion comprises first transverse portions located at two ends of the vertical portion, connecting portions are arranged on the first transverse portions, the tool assembly further comprises connecting plates, and the connecting portions are connected with one another through the connecting plates.
10. The detection tool according to claim 7, further comprising a distance measuring sensor, wherein the distance measuring sensor is arranged on the first assembled part and located between two adjacent installation cavities, the distance measuring sensor is further electrically connected with the battery management system, and the distance measuring sensor is used for detecting the deformation of the installation cavity corresponding to the first assembled part.
11. The detection tool according to claim 2, further comprising a wind speed measurement sensor, wherein the wind speed measurement sensor is arranged on the tool assembly and electrically connected with the battery management system, and the battery management system is further configured to control the rotation speed of the fan according to the wind speed detected by the wind speed measurement sensor and the temperature of the battery core.
12. A temperature check method applied to the detection tool according to any one of claims 1 to 11, the method comprising:
the battery management system acquires the temperature of the battery core through the first temperature sensor group and acquires the temperature of the bus bar through the second temperature sensor group;
the battery management system generates a check function according to the temperature of the battery core and the temperature of the bus bar;
and the battery management system checks the temperature of the bus bar according to the temperature of the bus bar and the check function.
13. An energy storage device, comprising:
the detection tool of any one of claims 1-11;
the battery cores are installed in the installation cavity of the detection tool.
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