Battery control IC, battery pack, and authentication method thereof
First Claim
Patent Images
1. A battery pack authentication method, comprising:
- performing a first authentication between a battery pack and a host device;
performing a control to enable the battery pack to perform a discharge operation when the first authentication is establishedperforming a second authentication between the battery pack and the host device; and
performing another control to enable the battery pack to perform a charge operation when the second authentication is established,wherein a security level of the second authentication is higher than a security level of the first authentication, andwherein a processing time of the first authentication is shorter than a processing time of the second authentication.
1 Assignment
0 Petitions
Accused Products
Abstract
It is possible to limit the use of non-authentic battery packs. A battery control IC (200) includes an authentication circuit (208) and a charge/discharge control circuit (210). The charge/discharge control circuit (210) controls charging and discharging of a battery (22). The authentication circuit (208) performs a process for performing an authentication with a host device. The authentication circuit (208) is configured to perform a process associated with a first authentication in a common key system. The charge/discharge control circuit (210) is configured to perform a control to enable a discharge operation when the first authentication is established.
-
Citations
15 Claims
-
1. A battery pack authentication method, comprising:
-
performing a first authentication between a battery pack and a host device; performing a control to enable the battery pack to perform a discharge operation when the first authentication is established performing a second authentication between the battery pack and the host device; and performing another control to enable the battery pack to perform a charge operation when the second authentication is established, wherein a security level of the second authentication is higher than a security level of the first authentication, and wherein a processing time of the first authentication is shorter than a processing time of the second authentication. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A battery control IC, comprising:
-
a charge/discharge control circuit that controls charging and discharging of a battery; and an authentication circuit that performs a process for performing an authentication with a host device, wherein the authentication circuit is configured to perform a process associated with a first authentication, wherein the charge/discharge control circuit is configured to perform a control to enable a discharge operation when the first authentication is established, wherein the authentication circuit is configured to perform a process associated with a second authentication, wherein the charge/discharge control circuit is configured to perform another control to enable a charge operation when the second authentication is established after the first authentication, wherein a security level of the second authentication is higher than a security level of the first authentication, and wherein a processing time of the first authentication is shorter than a processing time of the second authentication. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A battery pack, comprising:
-
a battery; a discharge switch that tunas on and off discharging of the battery; a charge switch that turns on and off charging of the battery; and a control IC that controls the battery, wherein the control IC includes; a charge/discharge control circuit that controls the discharge switch and the charge switch; and an authentication circuit that performs a process for performing an authentication with a host device, wherein the authentication circuit is configured to perform a process associated with a first authentication, wherein the charge/discharge control circuit is configured to control the discharge switch to be turned on when the first authentication is established, wherein the authentication circuit is configured to perform a process associated with a second authentication, wherein the charge/discharge control circuit is configured to control the charge switch to be turned on when the second authentication is established after the first authentication, wherein a security level of the second authentication is higher than a security level of the first authentication, and wherein a processing time of the first authentication is shorter than a processing time of the second authentication. - View Dependent Claims (14, 15)
-
Specification