CN217239704U - Be applied to battery module's information acquisition subassembly and battery module - Google Patents

Abstract

The utility model provides an information collection component applied to a battery module and a battery module. The information collection component applied to the battery module includes: a plurality of information collection devices, each of which is used for detecting the battery module The temperature and/or voltage of the battery cell; the first connecting wire harness, and the plurality of information collecting devices are connected in series through the first connecting wire harness to realize the information transmission among the plurality of information collecting devices. Therefore, by arranging a plurality of information collection devices independently, and using the first connection harness to connect the plurality of information collection devices in series, compared with the prior art, the material usage of the information collection components can be reduced, and the information collection can also be improved. The layout utilization rate of the components can be reduced, so that the production cost of the information collection components can be reduced.

Description

Information collection components and battery modules applied to battery modules

technical field

The utility model relates to the technical field of batteries, in particular to an information collection component applied to a battery module and a battery module having the information collection component applied to the battery module.

Background technique

In the related art, multiple information collection devices in the existing information collection assembly are integrated on the same circuit board, and circuits are etched on the circuit board to connect the multiple information collection devices in series, because the existing information collection assembly is constructed as a whole. In addition, the number of wiring harnesses required between the information acquisition devices is small, and the cross-sectional area of the wiring harness is small, which will cause the existing information acquisition components to use too much material, and the layout utilization rate of the information acquisition components is too low. As a result, the production cost of the information collection component will increase.

Utility model content

In view of this, the present utility model aims to provide an information collection assembly applied to a battery module, the material usage of the information collection assembly applied to the battery module is lower, and the information collection assembly applied to the battery module The typesetting utilization rate is higher, which can reduce the production cost of the information collection component.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

An information collection assembly applied to a battery module includes: a plurality of information collection devices, each of which is used to detect the temperature and/or voltage of a cell of the battery module; a first connection harness, A plurality of the information collection devices are connected in series through the first connection harness to realize information transmission among the plurality of the information collection devices.

In some examples of the present invention, on a series path of a plurality of the information collection devices, any two adjacent information collection devices are electrically connected through the first connection harness.

In some examples of the present invention, the first connection harness has a first connection end and a second connection end, each of the information collection devices has a communication input end and a communication output end, and the first connection harness has a communication input end and a communication output end. The first connection end is connected to a communication input end of one of the two adjacent information collection devices, and the second connection end of the first connection harness is connected to two adjacent information collection devices. The communication output end of the other one of the information collection devices is connected.

In some examples of the present invention, the first connection harness has a third connection end, a fourth connection end, a fifth connection end and a sixth connection end, and the third connection end and the fourth connection end are connected , the fifth connection end is connected with the sixth connection end, each of the information collection devices has a communication input end and a communication output end, the fourth connection end and the sixth connection end are respectively connected with the same The communication input end of the information collection device is connected with the communication output end; one of the third connection end and the fifth connection end is adjacent to the information collection device connected to the fourth connection end The communication input end of the collection device is connected, and the other one of the third connection end and the fifth connection end communicates with another information collection device adjacent to the information collection device connected to the fourth connection end output connection.

In some examples of the present invention, each of the information collection devices has a communication input end and a communication output end, and the communication input end and the communication output end of the same information collection device are respectively connected to two adjacent devices. The communication output end of one of the information collection devices is connected to the communication input end of the other information collection device.

In some examples of the present invention, on a series path of a plurality of the information collection devices, the communication input end of one of the two information collection devices located at the end is close to the battery module. The positive busbar of the module is arranged and connected with the positive communication terminal; the communication output end of the other of the two information collecting devices located at the end is arranged close to the negative busbar of the battery module and is Negative communication terminal is connected.

In some examples of the present invention, the communication input terminal connected to the positive communication terminal is further connected with a first voltage collection part, and the first voltage collection part is used for electrical connection with the positive bus bar of the module; Two connecting wire harnesses, the communication input end of the information collection device close to the positive bus bar of the module is electrically connected to the first voltage collecting part and the positive communication terminal through the second connecting wire harness; the third connecting wire harness , the communication output end of the information collection device close to the negative busbar of the module is electrically connected with the communication input end of the information collection device arranged on the negative busbar of the module through the third connection wire, and The communication output end of the information collection device disposed on the negative bus bar of the module is electrically connected to the negative communication terminal through the third connection harness.

In some examples of the present invention, the information collection component applied to the battery module further includes: a plurality of bus bars, each of which is used for connecting with the poles of the battery cells, each The bus bar is provided with at least one of the information collection devices.

In some examples of the present invention, the information collection assembly applied to the battery module further includes: an encapsulation film, and the encapsulation film is suitable for attaching a plurality of the information collection devices, a plurality of the bus bars, all the The first connection harness package is described.

Compared with the prior art, the information collection component of the present utility model has the following advantages:

According to the information collection assembly of the present invention, by arranging a plurality of information collection devices independently, and using the first connection harness to connect the plurality of information collection devices in series, compared with the prior art, the material usage of the information collection assembly can be reduced , it can also improve the typesetting utilization rate of the information collection component, thereby reducing the production cost of the information collection component.

Another object of the present invention is to provide a battery module.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

A battery module includes: a plurality of battery cells; and an information collection component, wherein the information collection component is the above-mentioned information collection component.

The advantages of the battery module and the above-mentioned information collection assembly are the same as those of the prior art, and details are not described herein again.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of an information collection component according to an embodiment of the present invention;

2 is a schematic diagram of a plurality of information collection devices according to an embodiment of the present utility model being sequentially connected in series through the first connection harness of the first embodiment;

3 is a schematic diagram of a plurality of information collection devices according to an embodiment of the present utility model being sequentially connected in series through the first connection harness of the second embodiment;

FIG. 4 is a schematic diagram of the first connection harness of the first embodiment according to the embodiment of the present utility model;

FIG. 5 is a schematic diagram of an information collection device according to an embodiment of the present invention.

Description of reference numbers:

Information collection assembly 100; first connection harness 300; second connection harness 400; third connection harness 500; module positive bus bar 600; module negative bus bar 700;

busbar 10;

Information collection device 20; circuit board 201; collection chip 202; voltage collection part 203;

Communication input end 40; Communication output end 50;

The first connection end 601; the second connection end 602; the third connection end 603; the fourth connection end 604; the fifth connection end 605; the sixth connection end 606;

The first voltage collection part 70 ; the packaging film 80 ; the positive communication terminal 901 ; the negative communication terminal 902 .

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

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

As shown in FIGS. 1-5 , the information collection assembly 100 applied to the battery module according to the embodiment of the present invention includes: a plurality of information collection devices 20 and a first connection harness 300 , each information collection device 20 is It is used to detect the temperature and/or voltage of the cells of the battery module, wherein, in some embodiments of the present invention, as shown in FIG. 10 are all used for connecting with the pole of the cell, and each bus bar 10 may be provided with at least one information collecting device 20 . The battery module has a plurality of cells, and the plurality of cells are arranged in sequence. The two adjacent cells can be connected by the bus bar 10, and the plurality of cells can be connected in series in sequence. At this time, the bus bar 10 One end of the bus bar 10 may be electrically connected to the positive electrode of the cell, and the other end of the bus bar 10 may be electrically connected to the negative electrode of the adjacent cell. A plurality of cells can also be connected in parallel in sequence. In this case, both ends of the bus bar 10 can be connected to the positive poles of two adjacent cells at the same time, or both ends of the bus bar 10 can be connected to the positive poles of two adjacent cells at the same time. Negative connection.

Furthermore, as shown in FIG. 1 , the information collection device 20 may acquire temperature data and/or voltage data of the battery cells by collecting the temperature and/or voltage of the bus bar 10 . The temperature data and/or voltage data of the battery cells collected by the information collection device 20 can be transmitted to the analysis device, and the analysis device can analyze the received temperature data and/or voltage data of the battery cells to determine the temperature and/or voltage of the battery module. or whether the voltage is abnormal. In the battery module, the analysis device may be a BMS (Battery Management System) of the battery module. Preferably, the information collection device 20 can collect the temperature and voltage of the bus bar 10 at the same time, so that the BMS can monitor and control the temperature and voltage of the cell at the same time, so that the BMS can The battery cells are adjusted to a more suitable working state, thereby improving the service life and use safety of the battery module.

Among them, as shown in FIG. 5 , the information collection device 20 includes a circuit board 201 , a collection chip 202 and a voltage collection part 203 . The surface of the circuit board 201 can be etched with a circuit. In some specific embodiments, the circuit board 201 can be a printed circuit However, 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 can be configured as a flexible circuit board 201 , and the flexible circuit board 201 has higher plasticity, which can facilitate the installation of the information collection device 20 on the bus bar 10 . In addition, the acquisition chip 202 is electrically connected to the circuit board 201 . Specifically, the acquisition chip 202 has a plurality of pins, and the circuit board 201 may be correspondingly provided with a plurality of welding points, and the plurality of welding 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 welded and connected to the corresponding welding points, so that the circuit board 201 and the acquisition chip 202 can be connected together, and the acquisition chip 202 can be connected to the circuit on the surface of the circuit board 201 through the welding points. , so as to achieve the technical effect that the acquisition chip 202 is electrically connected to the circuit board 201 .

Meanwhile, the collecting chip 202 is adapted to be in contact with the bus bar 10 and used for collecting the temperature of the battery cells. A temperature sensor can be integrated in the acquisition chip 202. By contacting the acquisition chip 202 with the bus bar 10, the temperature sensor can convert the temperature of the bus bar 10 into an electrical signal, and the acquisition chip 202 can acquire the bus bar 10 according to the electrical signal sent by the temperature sensor. The temperature of the battery cell can then be collected by the collection chip 202. It should be noted that the temperature of the negative electrode of the battery cell is higher than the temperature of the positive electrode of the battery cell. When the battery cells are connected in series, the temperature of the bus bar 10 collected by the acquisition chip 202 can represent the temperature of the negative electrode pole and the bus bar 10 connected. Cell temperature.

Further, the circuit board 201 may also be provided with a plurality of component connection positions, and the plurality of component connection positions are all connected to the circuits on the surface of the circuit board 201 . The component connection position can be installed with electronic components, and the electronic components can include but are not limited to: resistors, capacitors, etc., through the cooperation of the acquisition chip 202, the circuit board 201 and the electronic components, the surface of the circuit board 201 can form a sampling circuit. A sampling circuit is set on the 20, and the information collection device 20 can collect the temperature of the cell according to the sampling requirement.

The voltage collection part 203 is suitable for being electrically connected with the bus bar 10 to collect the cell voltage, and the voltage collection part 203 can be electrically connected with the circuit board 201 . The voltage collection part 203 can be electrically connected to the collection chip 202 mounted on the circuit board 201. By cooperating with the collection chip 202, the circuit board 201 and the electronic components, after the voltage collection part 203 collects the voltage of the cell, the collection chip 202 can generate electricity. The voltage signal of the cell, and the sampling circuit can send the collected voltage signal to the analysis device, and the analysis device can analyze whether the voltage of the cell is abnormal according to the voltage signal.

Further, the voltage collecting part 203 can be configured as a metal sheet, wherein the metal has good electrical conductivity and the resistance of the metal sheet is low. Using the metal sheet to collect the voltage of the cell can improve the sampling accuracy of the information collecting device 20 . Specifically, the voltage collection part 203 can be configured as an aluminum sheet, a nickel sheet or a copper sheet, etc. Preferably, when the circuit material etched on the circuit board 201 is copper material, and the bus bar 10 between the cells is made of aluminum The voltage collecting part 203 can be constructed as a nickel sheet, that is to say, the voltage collecting part 203 can be made of a nickel material, wherein the chemical properties of the nickel material are between that of the aluminum material and the copper material, and the electrical conductivity of the nickel sheet Preferably, by arranging the nickel sheet between the bus bar 10 and the circuit board 201, under the condition that the voltage collection part 203 can accurately collect the voltage of the cell, the nickel sheet and the copper circuit, the nickel sheet and the aluminum bus are connected. Electrochemical corrosion is not easy to occur between the rows 10, so that the service life of the voltage collecting part 203 can be effectively prolonged.

In addition, the plurality of information collection devices 20 are connected in series through the first connection harness 300 to realize information transmission among the plurality of information collection devices 20 . The plurality of information collection devices 20 may be set in one-to-one correspondence with the plurality of battery cells. By connecting the plurality of information collection devices 20 in series in sequence, the information collection component 100 can simultaneously send the data collected by the plurality of information collection devices 20 to the BMS , so that the BMS can manage multiple cells in the battery module at the same time, and the BMS can determine whether the temperature and voltage of the multiple cells in the battery module are abnormal, thereby improving the service life and safety of the battery module.

In some embodiments, the first connection harness 300 may be configured as a flexible circuit board 201 , the surface of the flexible circuit board 201 may be etched with circuits, and the circuits on the flexible circuit board 201 may be respectively connected with the sampling circuits of the plurality of information collection devices 20 . It is electrically connected, so that the technical effect of signal transmission among multiple information collection devices 20 can be achieved. Of course, the present invention is not limited to this. For example, the first connecting wire harness 300 can also be configured as a flat wire harness. Constructing the first connecting wire harness 300 as a flat wire harness can effectively reduce the thickness of the first connecting wire harness 300, thereby further facilitating the The layout of the first connection harness 300 in the information collection assembly 100 can also reduce the space occupied by the first connection harness 300 in the battery module.

Further, the cross-sectional size of the first connection harness 300 can be adapted to the cross-sectional size required for the connection lines between the multiple information collection devices 20. Compared with the prior art, the information collection assembly 100 does not need to be connected through a whole circuit board. A plurality of information collection devices 20, thus, by setting the plurality of information collection devices 20 independently, and using the first connection harness 300 to connect the plurality of information collection devices 20 in series, compared with the prior art, the number of information collection components can be reduced 100 material usage can also improve the typesetting utilization rate of the information collection component 100 , thereby reducing the production cost of the information collection component 100 .

In some embodiments of the present invention, as shown in FIGS. 1-3 , on the serial path of multiple information collection devices 20 , any two adjacent information collection devices 20 are electrically connected through a first connection harness 300 . Wherein, for any number of information collection devices 20 , by increasing or decreasing the number of the first connection harnesses 300 , a series connection between multiple information collection devices 20 can be realized. In different types of battery modules, by using a plurality of first connection harnesses 300 to electrically connect a plurality of information collection devices 20 , the designer does not need to design additional connection circuits for the information collection assemblies 100 with different numbers of information collection devices 20 . Therefore, the modular design of the information collection assembly 100 can be realized, so that the design cost of the battery module can be reduced. At the same time, the first connection harness 300 can be used in different types of battery modules. higher performance, thereby reducing the production cost of the battery module.

In addition, as shown in FIGS. 1-4 , the length of the first connecting wire harness 300 may be greater than the distance between any two adjacent information collecting devices 20 . When the battery cell expands during discharging or charging, the The spacing distance between the poles of the core is increased, and the spacing distance between any two adjacent information collection devices 20 is increased. By making the length of the first connecting wire harness 300 longer than any two adjacent information collection devices 20, the first connection harness 300 and the two adjacent information collection devices 20 are not easily disconnected, so that the working stability of the information collection assembly 100 can be improved. Preferably, as shown in FIG. 4 , the first connecting wire harness 300 can be bent to form an L-shaped structure. On the basis of increasing the length of the wire harness of the first connecting wire harness 300 , this arrangement can make multiple wire harnesses orderly arranged in the information In the collection assembly 100 , the difficulty of wiring the multiple first connection harnesses 300 in the information collection assembly 100 can be reduced.

In some embodiments of the present invention, as shown in FIG. 4 , the first connection harness 300 has a first connection end 601 and a second connection end 602 , and each information collection device 20 has a communication input end 40 and a communication output end 50. The first connection end 601 of the first connection harness 300 is connected to the communication input end 40 of one of the two adjacent information collection devices 20, and the second connection end 602 of the first connection harness 300 is connected to the adjacent information collection device 20. The communication output terminal 50 of the other information collection apparatus 20 of the two information collection apparatuses 20 is connected.

Wherein, both the communication input end 40 and the communication output end 50 are electrically connected to the circuit board 201 of the information collection device 20, and both the communication input end 40 and the communication output end 50 may include a plurality of electrical connection bits, and each electrical connection bit is associated with the information One of the circuits in the circuit board 201 of the collecting device 20 is electrically connected. And the number of electrical connection bits of the communication input end 40 is the same as the number of electrical connection bits of the communication output end 50, the first connection harness 300 may be provided with a circuit corresponding to the number of electrical connection bits of the communication input end 40 and the communication output end 50, and The first connection end 601 may be provided with electrical connection bits corresponding to the number of electrical connection bits of the communication input end 40, the second connection end 602 may be provided with electrical connection bits corresponding to the number of electrical connection bits of the communication output end 50, the first The electrical connection position of the connection terminal 601 and the electrical connection position of the second connection terminal 602 are respectively electrically connected to the corresponding circuits in the first connection wire harness 300 . The plurality of electrical connection bits of the first connection end 601 can be respectively electrically connected to the plurality of electrical connection bits of the communication input end 40 , and the plurality of electrical connection bits of the second connection end 602 can be respectively connected to the plurality of electrical connection bits of the communication output end 50 . The connection bits correspond to electrical connections.

The first connection harness 300 can be connected between the communication output end 50 of the nth information collection device 20 and the communication input end 40 of the n+1th information collection device 20 . It should be noted that n is an integer greater than 0. By using a plurality of electrical connection lines to connect a plurality of information collection devices 20 in sequence, the nth information collection device 20 can send the collected signal to the communication input end 40 of the n+1th information collection device 20 through the communication output end 50 The first connection harness 300 can connect the sampling circuits of a plurality of information collection devices 20 in series, so that the sampling circuits of the plurality of information collection devices 20 can transmit the sampled voltage signals, temperature signals, etc. to the analysis device through the series circuit, and analyze the The device can analyze the temperature data and voltage data collected by multiple information collecting devices 20 at the same time, so as to judge whether the temperature and voltage of the battery cells are abnormal.

Further, the communication input end 40 and the first connecting wire harness 300 can be connected together through a plug port and a plug terminal, and the communication output end 50 and the first connection wire harness 300 can be connected through a plug port and a plug terminal Connected together, that is, between the communication input end 40 and the first connecting wire harness 300, and between the communication output end 50 and the first connecting wire harness 300. A welding part may be provided between the communication output end 50 and the first connection harness 300, a welding part may be provided between the communication input end 40 and the first connection harness 300, and the communication output end 50 and the first connection harness 300 can be soldered connection. In this way, the communication input end 40 and the first connection wire harness 300 and the communication output end 50 and the first connection wire harness 300 can be connected reliably.

Further, when a plurality of cells are connected in series, the arrangement direction between any two adjacent cells is opposite, and when the information collection device 20 is arranged in the same position on each cell, and any two adjacent cells are arranged in the opposite direction. When the information collection devices 20 are arranged in a staggered manner, the information collection devices 20 arranged on one side of the battery module adopt the A-type structure, and the information collection devices 20 arranged on the other side of the battery module adopt the B-type structure. The A-type structure and the B-type structure are mirror images of each other. When the first connecting wire harness 300 is connected between the two information collection devices 20, this arrangement can avoid the crossover between the plurality of first connecting wire harnesses 300, so that the Signal interference between the first connecting wire harnesses 300 is reduced, thereby improving the sampling quality of the information collection component 100 .

In other embodiments of the present invention, as shown in FIG. 3 , the first connection harness 300 has a third connection end 603 , a fourth connection end 604 , a fifth connection end 605 and a sixth connection end 606 . The third connection The terminal 603 is connected to the fourth connection terminal 604, the fifth connection terminal 605 is connected to the sixth connection terminal 606, each information collection device 20 has a communication input terminal 40 and a communication output terminal 50, and the fourth connection terminal 604 is connected to the sixth connection terminal 604. The terminal 606 is respectively connected to the communication input terminal 40 and the communication output terminal 50 of the same information collection device 20, and one of the third connection terminal 603 and the fifth connection terminal 605 is adjacent to the information collection device 20 connected to the fourth connection terminal 604. The communication input end 40 of the information collection device 20 is connected, and the other one of the third connection end 603 and the fifth connection end 605 is connected to the communication input end 20 of another information collection device 20 adjacent to the information collection device 20 connected to the fourth connection end 604 The output terminal 50 is connected.

Wherein, when three or more battery cells are provided in the battery module, the first connection harness 300 of this embodiment connects the nth information collection device 20 , the n+1th information collection device 20 , and the n+th information collection device 20 . Two information collection devices 20 are connected together at the same time, it should be noted that n is an integer greater than 0. Specifically, when the data transmission direction in the information collection assembly 100 is the direction from the nth information collection device 20 to the n+1th information collection device 20, the fourth connection end 604 and the sixth connection end 606 are respectively connected to the The communication input end 40 and the communication output end 50 of the n+1th information collection device 20 are electrically connected, and one of the third connection end 603 and the fifth connection end 605 is electrically connected to the communication output end 50 of the nth information collection device 20 For connection, the other one of the third connection end 603 and the fifth connection end 605 is electrically connected to the communication input end 40 of the n+2th information collection device 20 .

As shown in FIG. 3 , when the third connection end 603 is electrically connected to the communication output end 50 of the nth information collection device 20 , and the fifth connection end 605 is electrically connected to the communication input end 40 of the n+2th information collection device 20 When connected, the third connection end 603 and the fourth connection end 604 can be connected through a circuit, and the fifth connection end 605 and the sixth connection end 606 can be connected through a circuit, and the third connection end 603 and the fourth connection end 603 can be connected through a circuit. The circuit between the connection terminals 604 and the circuit between the fifth connection terminal 605 and the sixth connection terminal 606 are disconnected from each other. Therefore, by integrating the connection circuits between the three adjacent information collection devices 20 into a first connection harness 300, the layout utilization rate of the information collection assembly 100 can be further improved, so that the information collection assembly 100 can be further reduced. Therefore, the production cost of the information collection assembly 100 can be further reduced.

In some embodiments of the present invention, as shown in FIGS. 1-3 and 5 , each information collection device 20 has a communication input end 40 and a communication output end 50 , and the communication input end of the same information collection device 20 The communication output terminal 40 and the communication output terminal 50 are respectively connected to the communication output terminal 50 of one information acquisition device 20 and the communication input terminal 40 of the other information acquisition device 20 among the two adjacent information acquisition devices 20 . Wherein, on the serial path of a plurality of information collecting devices 20, the communication input end 40 of each information collecting device 20 is used to receive the data collected by the information collecting device 20 located upstream of the serial path, and the communication output of the information collecting device 20 The terminal 50 can output the data collected by the information collection device 20 located upstream of the serial path and the data collected by the information collection device 20 to the information collection device 20 located downstream of the serial path, and transmit the collected data sequentially through a plurality of information collection devices 20 , when the analysis device receives the data sent by the information collection device 20 located at the most downstream of the serial path, the analysis device can simultaneously acquire the data collected by multiple information collection devices 20 in the serial path, so that the BMS can obtain data more efficiently , which can improve the management capability of BMS.

In some embodiments of the present invention, as shown in FIG. 1 to FIG. 3 , on the serial path of a plurality of information collection devices 20 , the communication input of one information collection device 20 of the two information collection devices 20 at the end is The terminal 40 is arranged close to the module positive bus bar 600 of the battery module and is connected with the positive communication terminal 901. The communication output terminal 50 of the other information acquisition device 20 of the two information acquisition devices 20 at the end is close to the module of the battery module. The set of negative bus bars 700 are arranged and connected with negative communication terminals 902 .

The positive communication terminal 901 can output signals to the communication input terminal 40 of the information acquisition device 20 close to the positive communication terminal 901 , and the communication output terminal 50 of the information acquisition device 20 close to the negative communication terminal 902 can output signals to the negative communication terminal 902 . The battery may include multiple battery modules, and each battery module may be provided with an information collection assembly 100, and each information collection assembly 100 may include a negative communication terminal 902 and a positive communication terminal 901. The information collection assembly The positive communication terminal 901 of the 100 can be electrically connected with the negative communication terminal 902 of the adjacent information collection assembly 100, so as to realize the technical effect that the information collection assemblies 100 in the two battery modules are connected in series, and the two connected information collection assemblies 100 Signals can be transmitted between them, and the transmission direction of the signals can be the direction from the negative communication terminal 902 to the positive communication terminal 901 . By sequentially connecting the information collecting assemblies 100 in the multiple battery modules in series, and then connecting the multiple information collecting assemblies 100 in series with the BMS, the BMS can acquire the temperature and voltage of the cells in the multiple battery modules simultaneously, Therefore, the BMS can manage multiple battery modules at the same time, thereby further improving the management capability of the BMS.

In some embodiments of the present invention, as shown in FIG. 1 to FIG. 3 , the communication input terminal 40 connected to the positive communication terminal 901 is further connected with a first voltage collection part 70 , and the first voltage collection part 70 is used to communicate with the analog terminal 901 . The positive bus bars 600 of the group are electrically connected, the first voltage collection part 70 can collect the voltage of the positive bus bar 600 of the module, and the information collection device 20 close to the positive communication terminal 901 can obtain the positive bus bar of the module through the first voltage collection part 70 600 voltage, the information collection device 20 can generate a voltage signal, and the BMS can perform overall management of the battery module according to the voltage signal output by the information collection device 20 near the positive communication terminal 901 .

Further, the module negative bus bar 700 can be provided with an information collection device 20 , and the information collection device 20 located at the module negative bus bar 700 can collect the voltage and temperature of the module negative bus bar 700 . With the cooperation of the collection device 20 and the information collection device 20 located on the negative bus bar 700 of the module, the BMS can monitor and adjust the overall temperature and voltage of the battery module, thereby improving the service life and safety of the battery module.

Further, the information collection assembly 100 may further include: a second connection harness 400 and a third connection harness 500 , and the communication input end 40 of the information collection device 20 close to the positive bus bar 600 of the module is connected to the first voltage through the second connection harness 400 The collecting part 70 and the positive communication terminal 901 are electrically connected, and the communication output end 50 of the information collecting device 20 close to the negative bus bar 700 of the module communicates with the information collecting device 20 arranged on the negative bus bar 700 of the module through the third connecting wire harness 500 The input end 40 is electrically connected, and the communication output end 50 of the information collection device 20 disposed on the negative bus bar 700 of the module is electrically connected to the negative communication terminal 902 through the third connection harness 500 .

Wherein, the communication input end 40 of the information acquisition device 20 close to the positive bus bar 600 of the module may be provided with a plurality of electrical connection positions, and some of the electrical connection positions of the plurality of electrical connection positions may pass through part of the circuit in the second connection harness 400 Connected to the first voltage collecting part 70 , the voltage collected by the first voltage collecting part 70 can be transmitted to the sampling circuit of the information collecting device 20 through the second connecting wire harness 400 . Another part of the plurality of electrical connection positions can be connected to the positive communication terminal 901 through another part of the circuit in the second connection harness 400, and the positive communication terminal 901 can collect the information collection components 100 in the adjacent battery modules. The voltage data and temperature data are transmitted to the information collection device 20 electrically connected to the positive communication terminal 901 , so that the technical effect of the serial connection between the two information collection components 100 can be achieved.

In addition, the communication output end 50 of the information collecting device 20 close to the negative bus bar 700 of the module can be connected to the communication input end 40 of the information collecting device 20 arranged on the negative bus bar 700 of the module through a part of the circuit in the third connection harness 500 , the voltage data and temperature data of the plurality of cells collected by the information collection component 100 can be transmitted to the information collection device 20 arranged on the negative bus bar 700 of the module, and the communication between the information collection device 20 arranged on the negative bus bar 700 of the module The output end 50 can be connected to the negative communication terminal 902 through another part of the circuit in the third connection harness 500, and the temperature data and voltage data of each cell in the battery module and the temperature data and voltage data of the battery module as a whole can be connected through The negative communication terminal 902 is transmitted to the information collection component 100 of the adjacent battery module, or is transmitted to the analysis device (ie, the BMS).

In some embodiments of the present invention, as shown in FIG. 1 , the information collection assembly 100 may further include: an encapsulation film 80 , and the encapsulation film 80 is suitable for connecting the plurality of information collection devices 20 , the plurality of bus bars 10 , the first connection Harness 300 package. The information collection assembly 100 may have a multi-layer packaging film 80, and a plurality of information collection devices 20, a plurality of bus bars 10, and the first connecting wire harness 300 are all sandwiched between the multi-layer packaging films 80, so that the information collection assembly can be The 100 is constructed as an integral piece. When the assembler assembles the information collection assembly 100 to the battery module, this arrangement can simplify the assembly process between the information collection assembly 100 and the battery cell, thereby improving the assembly efficiency of the battery module. Meanwhile, the encapsulation film 80 can separate the information collection assembly 100 from other electrical devices in the battery module, thereby reducing the risk of short circuit after the information collection assembly 100 is connected with other electrical devices in the battery module.

Preferably, the information collection assembly 100 may have two layers of encapsulation films 80 , and in the thickness direction of the information collection assembly 100 , one layer of the encapsulation films 80 may be located at the positions of the plurality of information collection devices 20 , the plurality of bus bars 10 , and the first connecting wire harness 300 . Above, another layer of encapsulation film 80 may be located under the plurality of information collection devices 20 , the plurality of bus bars 10 , and the first connection harness 300 . The plurality of information collection devices 20 , the plurality of bus bars 10 , and the first connection harness 300 may At the same time, it is sandwiched between two layers of encapsulation films 80. The edges of the two layers of encapsulation films 80 can be sealed and matched to construct the information collection assembly 100 as a whole. The avoidance port can avoid the plurality of information collection devices 20 , the plurality of bus bars 10 , and the first connection harness 300 respectively, so as to ensure the smooth assembly of the information collection assembly 100 and the battery module.

The battery module according to the embodiment of the present invention includes a plurality of battery cells and an information collection component 100 . The information collection component 100 is the information collection component 100 of the above embodiment. By arranging a plurality of information collection devices 20 independently, and using the first connection harness 300 to connect the plurality of information collection devices 20 in series, compared with the prior art, the material usage of the information collection assembly 100 can be reduced, and the amount of material used in the information collection assembly 100 can also be increased. The layout utilization rate of the information collection component 100 can be increased, so that the production cost of the information collection component 100 can be improved.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (10)

1. an information collection assembly applied to a battery module, characterized in that, comprising: a plurality of information collection devices (20), each of which is used for detecting the temperature and/or voltage of the cells of the battery module; A first connecting wire harness (300), a plurality of the information collecting devices (20) are connected in series through the first connecting wire harness (300) to realize information transfer among the plurality of the information collecting devices (20). 2. The information collection assembly applied to a battery module according to claim 1, characterized in that, on a series path of a plurality of the information collection devices (20), any two adjacent information collection devices (20) ) are electrically connected through the first connecting wire harness (300). 3. The information collection assembly applied to a battery module according to claim 2, wherein the first connection harness (300) has a first connection end (601) and a second connection end (602), each Each of the information collection devices (20) has a communication input end (40) and a communication output end (50), and the first connection end (601) of the first connection harness (300) is connected to two adjacent One of the information collection devices (20) is connected to the communication input end (40) of the information collection device (20), and the second connection end (602) of the first connection harness (300) is connected to the adjacent two The communication output terminal (50) of the other one of the information collection devices (20) is connected to the communication output terminal (50). 4. The information collection assembly applied to a battery module according to claim 2, wherein the first connection harness (300) has a third connection end (603), a fourth connection end (604), a third connection end (604), a The fifth connection end (605) and the sixth connection end (606), the third connection end (603) and the fourth connection end (604) are connected, the fifth connection end (605) and the sixth connection end (605) A connection end (606) is connected, each of the information collection devices (20) has a communication input end (40) and a communication output end (50), the fourth connection end (604) and the sixth connection end ( 606) are respectively connected with the communication input end (40) and the communication output end (50) of the same information collection device (20); One of the third connection end (603) and the fifth connection end (605) is adjacent to the information collection device (20) connected to the fourth connection end (604) The communication input end (40) of (20) is connected, and the other one of the third connection end (603) and the fifth connection end (605) is connected to the information connected to the fourth connection end (604). A communication output end (50) of another information collecting device (20) adjacent to the collecting device (20) is connected. 5. The information collection assembly applied to a battery module according to claim 2, wherein each of the information collection devices (20) has a communication input end (40) and a communication output end (50), the same as the The communication input end (40) and the communication output end (50) of one of the information collection devices (20) are respectively connected with one of the information collection devices (20) of the two adjacent information collection devices (20). The communication output end (50) of the device is connected with the communication input end (40) of the other information collection device (20). 6. The information collection assembly applied to a battery module according to claim 5, characterized in that, on the serial path of a plurality of the information collection devices (20), two of the information collection devices (20) are located at the ends. A communication input end (40) of one of the information collection devices (20) is arranged close to the module positive bus bar (600) of the battery module and is connected with a positive communication terminal (901); The communication output end (50) of the other one of the two information collection devices (20) located at the ends is arranged and connected close to the module negative busbar (700) of the battery module There is a negative communication terminal (902). 7. The information collection assembly applied to a battery module according to claim 6, wherein the communication input terminal (40) connected to the positive communication terminal (901) is further connected with a first voltage collection part (70). ), the first voltage collection part (70) is used for electrical connection with the positive busbar (600) of the module; A second connection harness (400), the communication input end (40) of the information acquisition device (20) close to the positive busbar (600) of the module is connected to the first through the second connection harness (400). The voltage collection part (70) and the positive communication terminal (901) are electrically connected; A third connection harness (500), the communication output end (50) of the information collection device (20) close to the negative busbar (700) of the module is connected to the communication output end (50) of the information collection device (20) through the third connection harness (500) The communication input end (40) of the information collection device (20) of the negative electrode busbar (700) of the module is electrically connected, and is arranged on the communication input end (40) of the information collection device (20) of the negative electrode busbar (700) of the module The communication output end (50) is electrically connected to the negative communication terminal (902) through the third connection harness (500). 8 . The information collection assembly applied to a battery module according to claim 1 , further comprising: a plurality of bus bars ( 10 ), and a plurality of the bus bars ( 10 ) are used for connecting with the electrical The poles of the core are connected, and each of the bus bars (10) is provided with at least one of the information collection devices (20). 9 . The information collection assembly applied to a battery module according to claim 8 , further comprising: an encapsulation film (80), wherein the encapsulation film (80) is suitable for connecting a plurality of the information collection devices ( 20), a plurality of the bus bars (10), and the first connecting wire harness (300) are packaged. 10. A battery module, comprising: multiple cells; An information collection component (100), the information collection component (100) is the information collection component according to any one of claims 1-9.

Images