CN217239557U - Information acquisition system, energy storage equipment and power device applied to battery pack - Google Patents

Abstract

The utility model provides an information acquisition system, energy storage equipment and power device for battery package, information acquisition system includes: a plurality of information acquisition components, each information acquisition component comprising a first communication terminal; the two ends of the electric connecting piece are respectively provided with a second communication terminal connected with the first communication terminal, on the serial paths of the information acquisition assemblies, the second communication terminals at the two ends of the electric connecting piece are respectively connected with the first communication terminals of the two adjacent information acquisition assemblies, each first communication terminal comprises a first communication sheet, and each second communication terminal comprises a second communication sheet connected with the first communication sheet. From this, the thickness dimension of first communication piece and second communication piece is littleer, connects through first communication piece and second communication piece, compares with prior art, can reduce the space size that first communication terminal and second communication terminal occupy on battery module to avoid battery module's the outside local protruding height.

Description

Information acquisition system, energy storage equipment and power device applied to battery pack

Technical Field

The utility model relates to a battery technology field, in particular to be applied to information acquisition system, an energy storage equipment and a power device of battery package.

Background

At least one battery module is usually arranged in the battery pack, an information acquisition assembly is arranged in each battery module to acquire the temperature and/or voltage of the battery module, and a first communication terminal is arranged on the outer side of the battery module. The plurality of information acquisition assemblies are sequentially connected in series through the electric connecting pieces, so that the modular design of the information acquisition system can be realized.

In the related art, the first communication terminal and the second communication terminal are connected and matched through a connecting piece, for example, one of the first communication terminal and the second communication terminal is provided with a plug terminal, the other one of the first communication terminal and the second communication terminal is provided with a plug port, and the plug terminal and the plug port can be matched in a plug manner.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an information acquisition system for battery package, the thickness size of this information acquisition system for battery package's first communication piece and second communication piece is littleer, connects through first communication piece and second communication piece, compares with prior art, can reduce the space size that first communication terminal and second communication terminal occupy on battery module to avoid battery module's the outside local arch too high.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an information acquisition system for a battery pack comprising: the battery pack comprises a plurality of information acquisition assemblies, a first communication terminal and a second communication terminal, wherein the plurality of information acquisition assemblies are used for detecting the temperature and/or the voltage of a battery core of the battery pack, and are sequentially connected in series, and each information acquisition assembly comprises a first communication terminal; the two ends of the electric connecting piece are respectively provided with a second communication terminal connected with the first communication terminal, on the serial path of the plurality of information acquisition assemblies, the second communication terminals at the two ends of the electric connecting piece are respectively connected with the first communication terminals of two adjacent information acquisition assemblies to realize information transmission between the two adjacent information acquisition assemblies, each first communication terminal comprises a first communication sheet, and each second communication terminal comprises a second communication sheet connected with the first communication sheet.

In some examples of the invention, the first communication sheet and the second communication sheet are fixedly connected.

In some examples of the present invention, the first communication terminal further includes a reinforcing plate, and the first communication piece is provided on the reinforcing plate.

In some examples of the invention, the stiffening plate is adapted to be fixed to an outer surface of the cell.

In some examples of the present invention, the first communication terminal further includes an insulating member for covering the first communication piece and the second communication piece.

In some examples of the invention, the insulator is fixedly connected to the stiffener.

In some examples of the invention, the first communication sheet and the second communication sheet are both metal sheets.

The utility model discloses an in some examples, every the information acquisition subassembly all still includes at least one information acquisition device, the information acquisition device is used for detecting the temperature and/or the voltage of electricity core, first communication terminal with correspond one of the information acquisition subassembly the information acquisition device electricity is connected, just first communication terminal with correspond it has anti-interference electron device to establish ties between the information acquisition device.

Compared with the prior art, be applied to information acquisition system of battery package have following advantage:

according to the utility model discloses an information acquisition system for battery package, the thickness dimension of first communication piece and second communication piece is littleer, connects through first communication piece and second communication piece, compares with prior art, can reduce the space size that first communication terminal and second communication terminal occupy on battery module to avoid battery module's the local arch in the outside too high.

Another object of the present invention is to provide an energy storage device.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

an energy storage device comprising: a plurality of battery modules; the battery pack comprises a battery pack body, a battery module and an information acquisition system, wherein the battery pack body is provided with a plurality of battery modules, the battery modules are arranged in a battery pack body, and the battery modules are arranged in a battery pack body.

Compared with the prior art, energy storage equipment have following advantage:

according to the utility model discloses an energy storage equipment is connected through first communication piece and second communication piece, compares with prior art, can reduce the space size that first communication terminal and second communication terminal occupy on battery module to avoid battery module's the local arch in the outside too high, and then can reduce the high space that battery module occupy the battery package.

Another object of the present invention is to provide a power device.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a power device is characterized by comprising the energy storage equipment.

The power device has the same advantages as the energy storage device in comparison with the prior art, and the detailed description is omitted.

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 a schematic view illustrating a connection between an information collecting assembly and an electrical connector according to an embodiment of the present invention via a first communication sheet and a second communication sheet;

fig. 2 is a schematic diagram of an information acquisition assembly disposed on an electrical core in a first arrangement manner according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a second arrangement of the information collecting assembly according to the embodiment of the present invention;

fig. 4 is a schematic diagram of an information acquisition apparatus according to an embodiment of the present invention.

Description of reference numerals:

a battery module 1000;

an information collection component 100; a battery cell 110; a first connection harness 300; a module cathode bus 600; a module positive bus bar 700; an electrical connection 800; a second communication terminal 810; a second communication sheet 820;

a bus bar 10;

an information acquisition device 20; a circuit board 201; an acquisition chip 202; a voltage acquisition section 203;

a communication input 40; a communication output 50; a first voltage collecting part 70;

a first communication terminal 90; a negative communication terminal 901; a positive communication terminal 902; and interference rejection electronics 903.

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.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-4, the information acquisition system applied to the battery pack according to the embodiment of the present invention includes: a plurality of information acquisition assemblies 100 and an electrical connection 800. A plurality of information acquisition subassemblies 100 all are used for detecting battery pack's electric core 110's temperature and/or voltage, specifically, the battery pack can include at least one battery module 1000, a plurality of electric cores 110 can have in every battery module 1000, a plurality of electric cores 110 in every battery module 1000 arrange in proper order, can connect through busbar 10 between two adjacent electric cores 110, series connection in proper order can be established between a plurality of electric cores 110, the one end of busbar 10 can be connected with electric core 110's positive pole electricity this moment, and the other end of busbar 10 can be connected with adjacent electric core 110's negative pole electricity. The battery cells 110 may also be connected in parallel in sequence, and at this time, both ends of the bus bar 10 may be connected to the anodes of two adjacent battery cells 110 at the same time, or both ends of the bus bar 10 may be connected to the cathodes of two adjacent battery cells 110 at the same time.

The information collecting assembly 100 includes: at least one information collecting device 20 and a first connecting harness 300, when the number of the information collecting devices 20 is plural, each information collecting device 20 is used for detecting the temperature and/or the voltage of the battery cells 110 of the battery module 1000, wherein, in the battery module 1000, as shown in fig. 2, each bus bar 10 may be provided with at least one information collecting device 20, and the information collecting device 20 may acquire the temperature data and/or the voltage data of the battery cells 110 by collecting the temperature and/or the voltage of the bus bar 10. Of course, in other embodiments of the present invention, as shown in fig. 3, at least one information acquisition device 20 may be disposed on the end cap of each electrical core 110, and the information acquisition device 20 may acquire the temperature data and/or the voltage data of the electrical core 110 by acquiring the temperature and/or the voltage of the end cap of the electrical core 110.

The temperature data and/or the voltage data of the battery cells 110 collected by the information collecting device 20 may be transmitted to an analyzing device, and the analyzing device may analyze the received temperature data and/or the received voltage data of the battery cells 110 to determine whether the temperature and/or the voltage of the battery pack are abnormal. In the Battery module 1000, the analysis means may be a BMS (Battery Management System-Battery Management System) of the Battery module 1000. Preferably, the information acquisition device 20 can simultaneously acquire the temperature and the voltage of the busbar 10, so that the BMS can simultaneously monitor and control the temperature and the voltage of the battery cell 110, and thus the BMS can be adjusted to a more suitable working state of the battery cell 110 according to the working temperature and the working voltage of the battery cell 110, and the service life and the use safety of the battery module 1000 can be further improved.

Further, as shown in fig. 4, the information collecting device 20 includes a circuit board 201, a collecting chip 202 and a voltage collecting portion 203, a surface of the circuit board 201 may be etched, in some specific embodiments, the circuit board 201 may be a printed circuit board 201, but the present invention is not limited thereto, for example, the circuit board 201 may also be a flexible circuit board 201. Preferably, the circuit board 201 may be configured as a flexible circuit board 201, and the flexibility of the flexible circuit board 201 is higher, which may facilitate the information acquisition device 20 to be mounted on the bus bar 10 or the end cap. The acquisition chip 202 is electrically connected to the circuit board 201, specifically, the acquisition chip 202 has a plurality of pins, the circuit board 201 may be correspondingly provided with a plurality of soldering points, and the soldering points are all connected to the circuit on the surface of the circuit board 201. The plurality of pins of the acquisition chip 202 can be respectively connected with the corresponding welding points in a welding manner, so that the circuit board 201 and the acquisition chip 202 can be connected together, and the acquisition chip 202 can be conducted with a circuit on the surface of the circuit board 201 through the welding points, thereby realizing the technical effect that the acquisition chip 202 is electrically connected with the circuit board 201.

Meanwhile, the acquisition chip 202 is adapted to be in contact with the busbar 10 or the end cap and is used for acquiring the temperature of the battery cell 110. The temperature sensor can be integrated in the acquisition chip 202, and through contacting the acquisition chip 202 with the busbar 10 or the end cover, the temperature sensor can convert the temperature of the busbar 10 or the end cover into an electric signal, and the acquisition chip 202 can acquire the temperature of the busbar 10 or the end cover according to the electric signal sent by the temperature sensor, so that the acquisition chip 202 can acquire the temperature of the battery cell 110. It should be noted that the temperature of the negative electrode of the battery cell 110 is higher than the temperature of the positive electrode of the battery cell 110, and when the battery cells 110 are connected in series and the information acquisition device 20 is disposed on the busbar 10, the temperature of the busbar 10 acquired by the acquisition chip 202 may represent the temperature of the battery cell 110 connecting the negative electrode and the busbar 10.

Furthermore, the circuit board 201 may further be provided with a plurality of component connection sites, and the plurality of component connection sites are all connected with the circuit on the surface of the circuit board 201. The component connection site may mount electronic components, which may include but are not limited to: resistance, electric capacity etc. through gathering chip 202, circuit board 201 and electronic component cooperation, can make the surface of circuit board 201 form sampling circuit, through set up sampling circuit on information acquisition device 20, information acquisition device 20 can gather the temperature of electric core 110 according to the sampling demand.

The voltage acquisition part 203 is suitable for being electrically connected with the busbar 10 or an end cover to acquire the voltage of the electric core 110, the voltage acquisition part 203 can be electrically connected with the circuit board 201, specifically, the voltage acquisition part 203 can be electrically connected with a circuit on the circuit board 201, so that the voltage acquisition part 203 can be electrically connected with the acquisition chip 202 mounted on the circuit board 201, through the cooperation of the acquisition chip 202, the circuit board 201 and an electronic element, after the voltage acquisition part 203 acquires the voltage of the electric core 110, the acquisition chip 202 can generate a voltage signal of the electric core 110, and the sampling circuit can transmit the acquired voltage signal to the analysis device, which can analyze whether the voltage of the electric core 110 is abnormal or not according to the voltage signal.

Further, the voltage collecting part 203 may be configured as a metal sheet, wherein the metal has good conductive performance, and the resistance of the metal sheet is low, and the use of the metal sheet to collect the voltage of the electrical core 110 may improve the sampling precision of the information collecting apparatus 20. Specifically, the voltage collecting part 203 may be configured as an aluminum sheet, a nickel sheet, a copper sheet, or the like, and preferably, when the circuit material etched on the circuit board 201 is a copper material and the bus bar 10 between the electric cells 110 is an aluminum material, or when the circuit material etched on the circuit board 201 is a copper material and the end cap is an aluminum material, the voltage collecting part 203 may be configured as a nickel sheet, that is, the voltage collecting part 203 may be made of a nickel material, wherein the chemical property of the nickel material is between the aluminum material and the copper material, and the conductivity of the nickel sheet is good, by disposing the nickel sheet between the bus bar 10 and the circuit board 201 and between the end cap and the circuit board 201, electrochemical corrosion does not easily occur between the nickel sheet and the copper circuit, between the nickel sheet and the aluminum bus bar 10, or between the nickel sheet and the aluminum end cap under the condition that the voltage collecting part 203 can accurately collect the voltage of the electric cells 110, so that the service life of the voltage collecting part 203 can be effectively prolonged.

As shown in fig. 2 and 3, the plurality of information collecting devices 20 are connected in series by the first connecting harness 300 to realize information transmission between the plurality of information collecting devices 20. Wherein, a plurality of information acquisition device 20 can set up with a plurality of electric core 110 one-to-one, through with a plurality of information acquisition device 20 series connection in proper order, information acquisition subassembly 100 can send the data of a plurality of information acquisition device 20 collection to BMS simultaneously, thereby can be convenient for BMS manage a plurality of electric cores 110 in battery module 1000 simultaneously, whether temperature and the voltage of a plurality of electric cores 110 are unusual in battery module 1000 can be judged to BMS, and then can improve battery module 1000's life and safety in utilization.

The first connection harness 300 has a first connection end and a second connection end, each information collection device 20 has a communication input end 40 and a communication output end 50, the first connection end of the first connection harness 300 is connected with the communication input end 40 of one information collection device 20 of the two adjacent information collection devices 20, and the second connection end of the first connection harness 300 is connected with the communication output end 50 of the other information collection device 20 of the two adjacent information collection devices 20.

Wherein, communication input 40 and communication output 50 all are connected with information acquisition device 20's circuit board 201 electricity, and communication input 40 and communication output 50 all can include a plurality of electric connection position, and every electric connection position all communicates with one of them circuit in information acquisition device 20's the circuit board 201 electricity. And the number of the electrical connection bits of the communication input terminal 40 is the same as that of the communication output terminal 50, the first connection harness 300 may be provided with a number of circuits corresponding to the number of the electrical connection bits of the communication input terminal 40 and the communication output terminal 50, the first connection terminal may be provided with a number of electrical connection bits corresponding to that of the electrical connection bits of the communication input terminal 40, the second connection terminal may be provided with a number of electrical connection bits corresponding to that of the electrical connection bits of the communication output terminal 50, and the electrical connection bits of the first connection terminal and the electrical connection bits of the second connection terminal are electrically connected to the corresponding circuits in the first connection harness 300, respectively. The plurality of electrical connection sites of the first connection terminal may be electrically connected to the plurality of electrical connection sites of the communication input terminal 40, respectively, and the plurality of electrical connection sites of the second connection terminal may be electrically connected to the plurality of electrical connection sites of the communication output terminal 50, respectively.

As shown in fig. 2 and 3, the first connecting harness 300 may be connected between the communication output terminal 50 of the nth information acquisition device 20 and the communication input terminal 40 of the (n + 1) th information acquisition device 20, where n is an integer greater than 0. The plurality of information collection devices 20 are connected in sequence by using the plurality of electrical connection lines, the nth information collection device 20 can send collected signals to the communication input end 40 of the (n + 1) th information collection device 20 through the communication output end 50, the first connection harness 300 can connect sampling circuits of the plurality of information collection devices 20 in series, so that voltage signals, temperature signals and the like which are sampled by the sampling circuits of the plurality of information collection devices 20 can be transmitted to the analysis device through the series circuit, the analysis device can analyze temperature data and voltage data collected by the plurality of information collection devices 20 at the same time, and whether the temperature and the voltage of the battery core 110 are abnormal or not can be judged.

Further, as shown in fig. 1, a plurality of information collecting assemblies 100 are sequentially connected in series, each information collecting assembly 100 includes a first communication terminal 90, and the first communication terminal 90 is electrically connected to one of the information collecting devices 20 corresponding to the information collecting assembly 100. Wherein each information-collecting assembly 100 may include two first communication terminals 90, in some embodiments, the two first communication terminals 90 may be respectively configured as a positive communication terminal 902 and a negative communication terminal 901. On the series path of the plurality of information collection devices 20, the communication input terminal 40 of one information collection device 20 of the two information collection devices 20 at the end of the information collection assembly 100 is arranged close to the module negative bus bar 600 of the battery module 1000 and connected with the negative communication terminal 901, and the communication output terminal 50 of the other information collection device 20 of the two information collection devices 20 at the end is arranged close to the module positive bus bar 700 of the battery module 1000 and connected with the positive communication terminal 902.

Among them, the negative communication terminal 901 may output a signal to the communication input terminal 40 of the information collection device 20 near the negative communication terminal 901, and the communication output terminal 50 of the information collection device 20 near the positive communication terminal 902 may output a signal to the positive communication terminal 902. The negative electrode communication terminal 901 of the information acquisition assembly 100 can be electrically connected with the positive electrode communication terminal 902 of the adjacent information acquisition assembly 100, so that the technical effect of series connection of the information acquisition assemblies 100 in the two battery modules 1000 can be realized, signals can be transmitted between the two connected information acquisition assemblies 100, and the transmission direction of the signals can be the direction from the positive electrode communication terminal 902 to the negative electrode communication terminal 901. Through the information acquisition subassembly 100 with in a plurality of battery module 1000 series connection in proper order, then a plurality of information acquisition subassemblies 100 after will establishing ties are connected with the BMS, and the temperature and the voltage of electric core 110 in a plurality of battery module 1000 can be acquireed simultaneously to the BMS can be made and the BMS is managed a plurality of battery module 1000 simultaneously, and then can further improve the managerial ability of BMS.

Further, as shown in fig. 1, the two ends of the electrical connector 800 are each provided with a second communication terminal 810 connected to the first communication terminal 90, on the serial path of the plurality of information acquisition assemblies 100, the second communication terminals 810 at the two ends of the electrical connector 800 are respectively connected to the first communication terminals 90 of two adjacent information acquisition assemblies 100 to realize information transmission between the two adjacent information acquisition assemblies 100, the first communication terminal 90 includes a first communication sheet, and the second communication terminal 810 includes a second communication sheet 820 connected to the first communication sheet. In some embodiments, the first communication sheet may be a plurality of first communication sheets, the plurality of first communication sheets are sequentially spaced apart, and the plurality of second communication sheets 820 may be correspondingly disposed.

The first communication sheet may include at least one electrical connection site, and each electrical connection site is in electrical communication with one of the circuits in the circuit board 201 of the information acquisition device 20 through a connection harness. Two first communication sheets arranged at two ends of the information acquisition assembly 100; the number of the electrical connection bits is the same, the electrical connection member 800 may be provided with a number of circuits corresponding to the number of the electrical connection bits of the first communication piece, and the second communication piece 820 may be provided with a number of electrical connection bits corresponding to the number of the electrical connection bits of the first communication piece, the electrical connection bits of the second communication piece 820 being electrically connected with the corresponding circuits in the electrical connection member 800. The plurality of electrical connection bits of the second communication piece 820 may be electrically connected to the plurality of electrical connection bits of the first communication piece, respectively.

The first communication sheet and the second communication sheet 820 can be both constructed into sheet structures, and compared with the connection members such as the plug-in terminal and the plug-in port arranged on the electric connection member 800, the first communication sheet and the second communication sheet 820 have smaller thickness sizes, and the thickness sizes of the first communication sheet and the second communication sheet 820 after being matched and connected are smaller, so that the space sizes occupied by the first communication terminal 90 and the second communication terminal 810 on the battery module 1000 can be reduced through the matching and connection of the first communication sheet and the second communication sheet 820, compared with the prior art, the local protrusion of the outer side of the battery module 1000 is avoided being too high, and the height space occupied by the battery module 1000 in a battery pack can be reduced.

Further, the electrical connector 800 may be configured as an FPC (Flexible Printed Circuit-Flexible wiring board 201) connector strip. The surface of the FPC connecting strip may be etched with circuits, the circuits on the FPC connecting strip may be electrically connected to the second communication pieces 820 located at both ends of the FPC connecting strip, respectively, and the circuits on the FPC connecting strip may be used to transmit signals between the two second communication pieces 820. Of course, the present invention is not limited thereto, for example, the electrical connector 800 may also be configured as a flat harness, and configuring the electrical connector 800 as a flat harness may effectively reduce the thickness dimension of the electrical connector 800, so as to reduce the size of the space occupied by the electrical connector 800 in the battery pack. Further, the electrical connector 800 may also be a common wire harness, which may reduce the production cost of the electrical connector 800.

In some embodiments of the present invention, the first communication sheet and the second communication sheet 820 may be fixedly connected. Preferably, the first and second communication sheets 820 may each include a welding portion, and the welding portion of the first communication sheet and the welding portion of the second communication sheet 820 may be in welding engagement therebetween, so that the first and second communication sheets 820 may be reliably joined together. Moreover, after the first communication sheet and the second communication sheet 820 are fixedly connected, a plurality of electric connection positions of the first communication sheet and a plurality of electric connection positions of the corresponding second communication sheet 820 can be kept connected, so that signals can be transmitted between the electric connecting piece 800 and two adjacent information acquisition assemblies 100, and the working reliability of the information acquisition system can be improved.

In some embodiments of the present invention, the first communication terminal 90 may further include a reinforcing plate, and the first communication piece may be disposed on the reinforcing plate. Wherein, first communication piece can set up with the stiffening plate laminating, and the area of contact between stiffening plate and the first communication piece is in order to improve stiffening plate and the first communication piece with the contact surface adaptation between the first communication piece. The stiffening plate can support first communication piece, and the stiffening plate can improve the structural strength of first communication piece to can avoid first communication piece fracture of buckling. Further, one side of the reinforcing plate, which is in contact with the first communication piece, can be provided with adhesive glue, and the reinforcing plate and the first communication piece can be in adhesive fit, so that the reinforcing plate can be prevented from being separated from the first communication piece. Of course, the reinforcing plate and the first communication piece can be connected and matched through a connecting structure such as a clamping structure without considering the cost.

In some embodiments of the present invention, the reinforcing plate is adapted to be fixed on the outer surface of the electrical core 110. When the first communication sheet is disposed on the first surface of the reinforcing plate, the second surface of the reinforcing plate is adapted to be connected and matched with the outer surface of the battery cell 110. The second surface of stiffening plate can have the bonding glue, can bond the cooperation between stiffening plate and the electric core 110 to can avoid stiffening plate and electric core 110 separation. Therefore, the first communication sheet can be fixed on the outer surface of the battery cell 110 by the reinforcing plate by arranging the adhesive glue on the first surface and the second surface of the reinforcing plate. Therefore, the first communication piece can be prevented from moving in the battery pack, the signal noise generated when the first communication piece moves can be reduced, the circuit disconnection between the first communication piece and the information acquisition device 20 can be avoided, and the signal quality of the information acquisition system is improved.

In addition, taking a specific embodiment of the present invention as an example, the reinforcing plate may be constructed in a sheet structure, the thickness of each of the first and second communication sheets 820 may be set to 0.1mm to 0.3mm, the thickness of the reinforcing plate, the first and second communication sheets 820 after being fitted is not more than 3mm, when the first communication sheet is fixed on the outer side of the battery cell 110 through the reinforcing plate, the protrusion height of the reinforcing plate, the first communication sheet and the second communication sheet 820 on the outer side of the battery cell 110 after being matched is smaller than the protrusion height of the connecting member on the outer side of the battery cell 110, and the height of the protrusion of the reinforcing plate, the first communication piece and the second communication piece 820 on the outer side of the battery cell 110 after being matched is smaller than the height of the protrusion of the bus bar 10 on the battery cell 110, therefore, the size of the space occupied by the first communication terminal 90 and the second communication terminal 810 after being matched on the battery module 1000 can be reduced, and the height space of the battery pack occupied by the battery module 1000 can be further reduced.

In some embodiments of the present invention, the first communication terminal 90 may further include an insulating member for covering the first and second communication sheets 820. In some embodiments, the insulating member may be an insulating tape, and the insulating tape may be flexibly deformable, so that the insulating member can be conveniently attached to the second communication sheet 820, and the first and second communication sheets 820 are covered by the insulating member, and the insulating member can separate the first and second communication sheets 820 from the electric device outside the electric core 110, so that the first and second communication sheets 820 can be prevented from contacting the electric device outside the electric core 110.

Further, the insulating part can with stiffening plate fixed connection, when the insulating part is insulating tape, the insulating part can bond the cooperation with the stiffening plate. After the insulating part is matched with the reinforcing plate, the first communication sheet and the second communication sheet 820 can be separated from the battery cell 110 and other electric devices in the battery pack, so that the short circuit of the first communication sheet and the battery cell 110 and other electric devices in the battery pack and the short circuit of the second communication sheet 820 and the battery cell 110 and other electric devices in the battery pack after the first communication sheet and the battery cell 110 and the other electric devices in the battery pack are contacted can be avoided, meanwhile, the interference on the first communication sheet and the second communication sheet 820 can be reduced, and the working reliability of the information acquisition system can be further improved.

In some embodiments of the present invention, the first and second communication sheets 820 may be metal sheets, and particularly, the first and second communication sheets 820 may be aluminum sheets, nickel sheets, or copper sheets, etc. When the first communication sheet and the second communication sheet 820 are made of metal materials, the first communication sheet and the second communication sheet 820 can be connected in a welding mode, the first communication sheet and the second communication sheet 820 have good conductivity, signals can be transmitted between the first communication sheet and the second communication sheet 820, and the first communication sheet and a wiring harness circuit in the information acquisition assembly 100 and circuits of the second communication sheets 820 and 800 can be connected in a welding mode, so that the signals can be transmitted between the first communication sheet and the wiring harness circuit in the information acquisition assembly 100, the second communication sheet 820 and the circuits of the electrical connectors 800.

Preferably, the first communication sheet 820 and the second communication sheet 820 may be nickel sheets, that is, the first communication sheet 820 and the second communication sheet 820 may be made of nickel materials, the chemical property of the nickel materials is similar to that of copper materials, and the conductivity of the nickel sheets is better, when the wiring harness circuit material in the information acquisition assembly 100 is a copper material and the circuit material of the electrical connector 800 is a copper material, electrochemical corrosion is not easy to occur between the wiring harness circuit in the information acquisition assembly 100 and the circuits of the second communication sheet 820 and the electrical connector 800, so that the working reliability of the information acquisition system can be effectively prolonged.

In some embodiments of the present invention, as shown in fig. 1, an anti-interference electronic device 903 is connected in series between the first communication terminal 90 and the corresponding information acquisition device 20. Specifically, the anti-interference electronic device 903 may be attached between the first communication terminal 90 and the corresponding information acquisition device 20, the anti-interference electronic device 903 may be electrically connected to the first communication terminal 90 and the information acquisition device 20, the anti-interference electronic device 903 may include but is not limited to a transformer, an inductor, a capacitor, and other electronic devices, by providing the anti-interference electronic device 903 between the first communication terminal 90 and the corresponding information acquisition device 20, the anti-interference electronic device 903 may reduce common mode interference when communication is performed between two adjacent information acquisition components 100, so that communication quality of the information acquisition system may be improved, and further data accuracy of the information acquisition system may be improved. Further, a circuit board 201 is arranged between the first communication terminal 90 and the corresponding information acquisition device 20, and the anti-interference electronic device 903 can be etched on the circuit board 201, so that the structure of the information acquisition system can be further simplified.

According to some specific embodiments of the present invention, as shown in fig. 1-3, the communication input end 40 connected to the first communication terminal 90 is further connected to a first voltage collecting part 70, the first voltage collecting part 70 is used for being electrically connected to the module cathode bus bar 600 or the module anode bus bar 700, the first voltage collecting part 70 can collect the voltage of the module cathode bus bar 600 or the module anode bus bar 700, and the information collecting device 20 near the cathode communication terminal 901 can obtain the voltage of the module cathode bus bar 600 through the first voltage collecting part 70, or the information collecting device 20 near the anode communication terminal 902 can obtain the voltage of the module anode bus bar 700 through the first voltage collecting part 70, the information collecting device 20 can generate a voltage signal, the BMS can apply the voltage signal output by the information collecting device 20 near the cathode communication terminal 901 or the voltage signal output by the information collecting device 20 near the anode communication terminal 902 to the battery module according to the BMS 100 perform overall management.

According to the utility model discloses energy storage equipment, energy storage equipment can be for battery package etc. energy storage equipment includes: a plurality of battery modules 1000 and information acquisition system, information acquisition system is the information acquisition system of the above-mentioned embodiment, and a plurality of information acquisition subassemblies 100 are arranged with a plurality of battery modules 1000 one-to-one. Through making to be connected through first communication piece and second communication piece 820 between information acquisition subassembly 100 and the electric connector 800, compare with prior art, can reduce the space size that first communication terminal 90 and second communication terminal 810 occupy on battery module 1000 to avoid battery module 1000's the outside local protruding too high, and then can reduce the high space that battery module 1000 occupy the battery package.

According to the embodiment of the utility model provides a power device, including the energy storage equipment of above-mentioned embodiment, energy storage equipment installs in power device, energy storage equipment is used for providing the electric energy for power device's with electrical apparatus, perhaps energy storage equipment can regard as power device's power battery to use, connect through first communication piece and second communication piece 820 between information acquisition subassembly 100 and the electric connector 800 through making information acquisition system among the energy storage equipment, compare with prior art, can reduce the space size that first communication terminal 90 and second communication terminal 810 occupy on battery module 1000, thereby avoid battery module 1000's the outside local arch too high, and then can reduce the high space that battery module 1000 occupy the battery package.

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. An information acquisition system for a battery pack, comprising:

the battery pack comprises a plurality of information acquisition assemblies (100), wherein the plurality of information acquisition assemblies (100) are used for detecting the temperature and/or the voltage of a battery core (110) of the battery pack, the plurality of information acquisition assemblies (100) are sequentially connected in series, and each information acquisition assembly (100) comprises a first communication terminal (90);

the two ends of the electric connecting piece (800) are respectively provided with a second communication terminal (810) connected with the first communication terminal (90), on the serial path of the information acquisition assemblies (100), the second communication terminals (810) at the two ends of the electric connecting piece (800) are respectively connected with the first communication terminals (90) of two adjacent information acquisition assemblies (100) to realize information transmission between the two adjacent information acquisition assemblies (100), the first communication terminals (90) comprise first communication sheets, and the second communication terminals (810) comprise second communication sheets (820) connected with the first communication sheets.

2. The information acquisition system applied to the battery pack as set forth in claim 1, wherein the first communication sheet and the second communication sheet (820) are fixedly connected.

3. The information collecting system applied to the battery pack according to claim 1, wherein the first communication terminal (90) further includes a reinforcing plate, and the first communication piece is provided on the reinforcing plate.

4. The information acquisition system applied to the battery pack as recited in claim 3, wherein the reinforcing plate is adapted to be fixed on the outer surface of the battery cell (110).

5. The information collecting system applied to a battery pack according to claim 3, wherein the first communication terminal (90) further comprises an insulating member for covering the first communication sheet and the second communication sheet (820).

6. The information acquisition system as set forth in claim 5, wherein the insulating member is fixedly connected to the reinforcing plate.

7. The information acquisition system applied to a battery pack according to any one of claims 1 to 6, wherein the first communication sheet and the second communication sheet (820) are both metal sheets.

8. The information acquisition system applied to the battery pack as recited in any one of claims 1 to 6, wherein each information acquisition assembly (100) further comprises at least one information acquisition device (20), the information acquisition device (20) is used for detecting the temperature and/or voltage of the battery core (110), the first communication terminal (90) is electrically connected with one information acquisition device (20) corresponding to the information acquisition assembly (100), and an anti-interference electronic device (903) is connected in series between the first communication terminal (90) and the corresponding information acquisition device (20).

9. An energy storage device, comprising:

a plurality of battery modules (1000);

the information acquisition system applied to the battery pack according to any one of claims 1 to 8, wherein the plurality of information acquisition assemblies (100) are arranged in one-to-one correspondence with the plurality of battery modules (1000).

10. A power plant characterized by comprising an energy storage device according to claim 9.

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