Battery cover plate, battery, and power system
A battery cover plate is provided, to resolve problems such as a signal transmission structure and sealing performance of the battery cover plate. The battery cover plate includes a plate body, a battery management unit, and a sensor assembly, wherein the plate body has an outer surface and an inner surface facing away from the outer surface. The battery management unit is disposed in the plate body, wherein a transmission structure is provided between the battery management unit and the outer surface, and the battery management unit includes a wireless communication module. The wireless communication module may perform wireless communication with the outside by using the transmission structure. The sensor assembly is connected to the battery management unit, wherein the sensor assembly is disposed in the plate body and extends out of the inner surface.
1 . A battery cover plate comprising:
a plate body provided with an outer surface and an inner surface facing away from the outer surface;
a battery management unit disposed in the plate body and comprising a wireless communication module capable of performing wireless communication with a device outside the outer surface by using a transmission structure provided between the battery management unit and the outer surface,
wherein the battery management unit is configured to be connected to a positive tab and a negative tab of a bare cell for detecting parameters,
wherein the parameters include at least one of a status of charges and a power status of the bare cell, and
wherein the parameters are used to regulate and control a charging/discharging state; and
a sensor assembly connected to the battery management unit, disposed in the plate body, and extending out of the inner surface.
2 . The battery cover plate according to claim 1 , wherein the plate body has an insulator, and the battery management unit is located in the insulator.
3 . The battery cover plate according to claim 2 , wherein the insulator is located inside the plate body, and an end of the transmission structure extends to the insulator.
4 . The battery cover plate according to claim 3 , wherein the transmission structure comprises a gap or a blind via.
5 . The battery cover plate according to claim 3 , wherein the transmission structure is filled with an insulating material.
6 . The battery cover plate according to claim 5 , wherein the insulator and the insulating material filled in the transmission structure are an integrally formed structure.
7 . The battery cover plate according to claim 1 , wherein an end of an insulator extends to the inner surface, and the sensor assembly is disposed on the insulator.
8 . The battery cover plate according to claim 1 , wherein the plate body is made of an insulating material.
9 . The battery cover plate according to claim 1 , wherein the sensor assembly comprises at least one of a temperature sensor, a barometric pressure sensor, or a gas sensor.
10 . The battery cover plate according to claim 1 , wherein the battery cover plate further comprises a positive-electrode pole and a negative-electrode pole disposed on the plate body, wherein the battery management unit is connected to the positive-electrode pole and the negative-electrode pole.
11 . The battery cover plate according to claim 1 , wherein the battery management unit comprises a power supply control circuit configured to connect or disconnect power supply to/from the sensor assembly.
12 . The battery cover plate according to claim 1 , wherein the battery cover plate further comprises an explosion-proof structure disposed on the plate body.
13 . A battery comprising a housing having a groove and a bare cell disposed in the groove, wherein the battery further comprises:
a battery cover plate comprising a plate body provided with an outer surface and an inner surface facing away from the outer surface;
a battery management unit disposed in the plate body and comprising a wireless communication module capable of performing wireless communication with the outer surface by using a transmission structure provided between the battery management unit and the outer surface,
wherein the battery management unit is configured to be connected to a positive tab and a negative tab of a bare cell to detect parameters,
wherein the parameters include at least one of a status of charges and a power status of the bare cell, and
wherein the parameters are used to regulate and control a charging/discharging state; and
a sensor assembly connected to the battery management unit, disposed in the plate body, and extending out of the inner surface,
wherein the battery cover plate covers an opening of the groove,
wherein the inner surface faces the groove, and
wherein the sensor assembly extends into the groove.
14 . The battery according to claim 13 , wherein the battery management unit is electrically connected to the bare cell.
15 . The battery according to claim 13 , wherein the groove in the housing is among a plurality of grooves in the housing, wherein a quantity of sensor assemblies is the same as a quantity of the plurality of grooves, and the quantity of the sensor assemblies are disposed in one-to-one correspondence with the quantity of the plurality of grooves.
16 . The battery according to claim 14 , wherein the groove in the housing is among a plurality of grooves in the housing, wherein a quantity of sensor assemblies is the same as a quantity of the plurality of grooves, and the quantity of the sensor assemblies are disposed in one-to-one correspondence with the quantity of the plurality of grooves.
17 . The battery according to claim 13 , wherein the battery further comprises a battery management system connected to the battery management unit in a wireless communication manner.
18 . A power system comprising:
an inverter connected to a battery and configured to convert an alternating current into a direct current and then provide the direct current for the battery, or convert a direct current from the battery into an alternating current;
a housing for the battery, wherein the battery comprises a bare cell, and wherein the bare cell is disposed in a groove of the housing;
a battery cover plate comprising a plate body provided with an outer surface and an inner surface facing away from the outer surface;
a battery management unit disposed in the plate body and comprising a wireless communication module capable of performing wireless communication with a device outside the outer surface by using a transmission structure provided between the battery management unit and the outer surface,
wherein the battery management unit is configured to be connected to a positive tab and a negative tab of the bare cell to detect parameters,
wherein the parameters include at least one of a status of charges and a power status of the bare cell, and
wherein the parameters are used to regulate and control a charging/discharging state; and
a sensor assembly connected to the battery management unit, disposed in the plate body, and extending out of the inner surface,
wherein the battery cover plate covers an opening of the groove, the inner surface faces the groove, and the sensor assembly extends into the groove.
19 . The power system according to claim 18 , wherein the plate body has an insulator, and the battery management unit is located in the insulator.
20 . The power system according to claim 19 , wherein the insulator is located inside the plate body, and an end of the transmission structure extends to the insulator.