# US 2018/0022301 A1 · In-vehicle detection system and power supply system and power supply controller > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022301 A1 - Document ID: US20180022301A1 - Status: Published application - Kind: A1 - Application number: 15/609,013 - Filed: 2017-05-31 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Nuctech Company Limited; Tsinghua University - Applicants: Nuctech Company Limited; Tsinghua University - Inventors: Jianmin Li; Hao Yu; Zhiqiang Chen; Yuanjing Li; Yulan Li; Li Zhang; Jingyu Gu; Dongyu Wang - Web page: https://patentgrep.com/patent/US20180022301A1 ## CPC - H02J 3/14: by switching loads on to, or off from, the networks, e.g. progressively balanced loading - B60R 16/033: characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) - G01V 5/22: Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays - G01V 5/232: {having relative motion between the source, detector and object other than by conveyor (G01V5/226 takes precedence)} - H01M 10/052: Li-accumulators - H01M 10/4207: {for several batteries or cells simultaneously or sequentially} - H02J 2105/12: supplying households or buildings - Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving - Y02E 60/10: Energy storage using batteries - Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract The present disclosure discloses an in-vehicle detection system and power supply system and power supply controller, which relates to the power supply control field. The power supply system comprises a low-power generator; a battery pack for supplying power to the in-vehicle detection system; a charger electrically connected to the low-power generator and the battery pack, respectively; and a power supply controller electrically connected to the battery pack and the low-power generator, respectively. The present disclosure uses a low-power generator and a battery pack to substitute a high-power generator, which can reduce the requirement on a peak power of the generator by the in-vehicle detection system, and improve the efficiency of the power supply. In addition, since a low-power generator and a lithium battery pack are used to substitute the high-power generator, it is favorable to the lightweight design of the in-vehicle detection system, and meanwhile reduces noises and vibration, and is favorable to improving the user experience and performance metrics. ## Claims ### Claim 1 A power supply system for an in-vehicle detection system, comprising: a low-power generator; a battery pack for supplying power to the in-vehicle detection system; a charger electrically connected to the low-power generator and the battery pack, respectively; and a power supply controller electrically connected to the battery pack and the low-power generator, respectively. ### Claim 2 (depends on 1) The power supply system according to claim 1, further comprising: a power supply selector electrically connected to the charger, the power supply controller and the low-power generator, respectively, for making a selection between an external power supply and the low-power generator; or a second charger electrically connected to the battery pack, for charging the battery pack from an external power supply. ### Claim 3 (depends on 1) The power supply system according to claim 1, wherein the battery pack is a lithium battery pack, and the lithium battery pack comprising: at least one battery set formed of a plurality of lithium battery cells connected in series or in parallel; and a battery management system for monitoring an electric quantity state of the battery set, and sending electric quantity state information to the power supply controller. ### Claim 4 (depends on 3) The power supply system according to claim 3, further comprising: a DC-DC converter electrically connected to the lithium battery pack, for converting a high voltage DC output from the lithium battery pack into a low voltage DC; and/or a DC-AC converter electrically connected to the lithium battery pack, for converting a high voltage DC output from the lithium battery pack into an power frequency AC. ### Claim 5 (depends on 1) The power supply system according to claim 1, wherein the battery pack further comprises an energy feedback unit for receiving electric energy fed back by the in-vehicle detection system. ### Claim 6 A power supply controller, comprising: an electric quantity state receiving unit for receiving electric quantity state information sent by the battery pack; a determining unit for determining whether the electric quantity state satisfies the working requirement of the in-vehicle detection system based on the electric quantity state information; and a control unit for sending a start instruction to the low-power generator to charge the battery pack if the electric quantity state does not satisfy the working requirement of the in-vehicle detection system. ### Claim 7 (depends on 6) The power supply controller according to claim 6, comprising: an external power supply detection unit for detecting whether there is an external power supply, wherein, the control unit is further used for controlling the external power supply to charge the battery pack if the external power supply is detected by the external power supply detection unit. ### Claim 8 (depends on 7) The power supply controller according to claim 7, wherein, the control unit is further used for: sending a start instruction to the low-power generator if the external power supply is not detected by the external power supply detection unit, and sending a stop instruction to the low-power generator if the electric quantity state information received by the electric quantity state receiving unit represents that the electric quantity of the battery pack is in full state. ### Claim 9 (depends on 8) The power supply controller according to claim 8, comprising: a working state receiving unit for receiving a working state of the in-vehicle detection system, wherein the working state includes a scanning state, a standby state or a stopped state, wherein, the determining unit is further used for determining a timing for starting or stopping the low-power generator based on the electric quantity state information and the working state of the in-vehicle detection system, and the control unit is further used for sending a start/stop instruction to the low-power generator according to the determination result of the determining unit. ### Claim 10 (depends on 9) The power supply controller according to claim 9, further comprising: a power consumption acquisition unit for acquiring power consumption per unit time in each working state of the in-vehicle detection system; and a workload state acquisition unit for acquiring a workload state of the in-vehicle detection system, wherein the workload state is determined based on a proportion of working periods of the in-vehicle detection system in each of different working states, wherein, the determining unit is further used for predicting whether the remaining electric quantity of the battery pack satisfies the working requirement of the in-vehicle detection system according to the working state, workload state and power consumption per unit time in each working state of the in-vehicle detection system, and the control unit is further used for sending a start instruction to the low-power generator if the remaining electric quantity of the battery pack does not satisfy the working requirement of the in-vehicle detection system; and sending a stop instruction to the low-power generator if the remaining electric quantity of the battery pack satisfies the working requirement of the in-vehicle detection system. ### Claim 11 (depends on 10) The power supply controller according to claim 10, further comprising: a parameter receiving unit for receiving configuration parameters and current time, wherein, the determining unit is further used for predicting average power consumption per unit time during a future period of time according to the workload state and the power consumption per unit time in each working state of the in-vehicle detection system and predicting whether the remaining electric quantity of the battery pack satisfies the working requirement of the in-vehicle detection system according to the configuration parameters, the current time, the working state, the predicted average power consumption per unit time and the remaining electric quantity of the battery pack. ### Claim 12 (depends on 9) The power supply controller according to claim 9, wherein, the determining unit is further used for determining whether the remaining electric quantity of the battery pack is greater than a threshold, and whether the in-vehicle detection system is in an enter-scanning state or an exit-scanning state; and the control unit is further used for sending a stop instruction to the low-power generator if the remaining electric quantity of the battery pack is greater than the threshold and the in-vehicle detection system is in the enter-scanning state, and sending a start instruction to the low-power generator if the in-vehicle detection system is in the exit-scanning state. ### Claim 13 (depends on 9) The power supply controller according to claim 9, wherein, the determining unit is further used for determining whether the remaining electric quantity of the battery pack is greater than a threshold and whether an accelerator starts to emit rays; and the control unit is further used for sending a stop instruction to the low-power generator if the remaining electric quantity of the battery pack is greater than a threshold and the accelerator starts to emit rays, and sending a start instruction to the low-power generator if the accelerator finishes emitting rays. ### Claim 14 (depends on 9) The power supply controller according to claim 9, wherein, the determining unit is further used for determining a workload of the in-vehicle detection system and determining whether the remaining electric quantity of the battery pack is greater than the threshold; and the control unit is further used for sending a stop instruction to the low-power generator if the in-vehicle detection system is in a low workload state and the remaining electric quantity of the battery pack is greater than the threshold, sending an intermittent start instruction to the low-power generator if the in-vehicle detection system is in a middle workload state and the remaining electric quantity of the battery pack is greater than the threshold, and sending a start instruction to the low-power generator if the in-vehicle detection system is in a high workload state. ### Claim 15 An in-vehicle detection system, comprising a power supply system, wherein, the power supply system comprises: a low-power generator; a battery pack for supplying power to the in-vehicle detection system; a charger electrically connected to the low-power generator and the battery pack, respectively; and a power supply controller electrically connected to the battery pack and the low-power generator, respectively. ### Claim 16 (depends on 15) The in-vehicle detection system according to claim 15, the power supply controller comprises: an electric quantity state receiving unit for receiving electric quantity state information sent by the battery pack; a determining unit for determining if the electric quantity state satisfies the working requirement of the in-vehicle detection system based on the electric quantity state information; and a control unit for sending a start instruction to the low-power generator to charge the battery pack if the electric quantity state does not satisfy the working requirement of the in-vehicle detection system. ### Claim 17 (depends on 16) The in-vehicle detection system according to claim 16, further comprising: a main controller for sending a control instruction to the power supply controller of the power supply system such that the power supply controller charges the battery pack according to the control instruction.