# US 2021/0344089 A1 · Protection assembly of battery module and battery module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0344089 A1 - Document ID: US20210344089A1 - Status: Published application - Kind: A1 - Application number: 17/153,884 - Filed: 2021-01-21 - Published: 2021-11-04 - Earliest claimed: 2020-04-30 - Assignees: China Lithium Battery Technology Co., Limited; CALB Technology Co., Ltd. - Applicants: China Lithium Battery Technology Co., Limited; CALB Technology Co., Ltd. - Inventors: Xiaoyuan Du; Keqiang Cheng; Liangjie Gu; Lihui Chang; Qixin Guo - Web page: https://patentgrep.com/patent/US20210344089A1 ## CPC - H01M 50/584: for preventing incorrect connections inside or outside the batteries - H01M 50/588: outside the batteries, e.g. incorrect connections of terminals or busbars - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 50/543: Terminals - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - H01M 50/591: Covers - H01M 50/593: Spacers; Insulating plates - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A protection assembly of a battery module and a battery module are provided, which include a base disposed with a supporting portion, an accommodating portion, and a separating portion. The supporting portion is configured to dispose a positive lead and/or a negative lead of a busbar. The accommodating portion is configured to accommodate a low-voltage connector for transmitting a signal of the battery module to a battery management system. The supporting portion and the accommodating portion are located on the same side of the battery module. The separating portion is located between the supporting portion and the accommodating portion, and is configured to separate the low-voltage connector from the positive lead and/or the negative lead. In the protection assembly of the battery module, the positive lead and/or the negative lead and the low-voltage connector are respectively disposed on the supporting portion and the accommodating portion. ## Claims ### Claim 1 A protection assembly of a battery module, comprising: a base, disposed with a supporting portion, an accommodating portion, and a separating portion, wherein the supporting portion is configured to dispose a positive lead and/or a negative lead of a busbar of the battery module; the accommodating portion is configured to accommodate a low-voltage connector of the battery module, wherein the low-voltage connector is configured to transmit a signal of the battery module to a battery management system; the supporting portion and the accommodating portion are located on a same side of the battery module; and the separating portion is located between the supporting portion and the accommodating portion, and is configured to separate the low-voltage connector from the positive lead and/or to separate the low-voltage connector from the negative lead. ### Claim 2 (depends on 1) The protection assembly according to claim 1, wherein there are two supporting portions, the two supporting portions are respectively configured to dispose the positive lead and the negative lead, and the accommodating portion is disposed between the two supporting portions. ### Claim 3 (depends on 2) The protection assembly according to claim 2, wherein the separating portion adopts an insulating material and comprises two separating cavities, and the two separating cavities are disposed between each of the two supporting portions and the accommodating portion. ### Claim 4 (depends on 1) The protection assembly according to claim 1, wherein the accommodating portion comprises an accommodating cavity for accommodating the low-voltage connector; the accommodating portion further comprises a first opening communicated with the accommodating cavity and configured for the low-voltage connector to move into the accommodating cavity along a first direction or for the low-voltage connector to move out of the accommodating cavity along an opposite direction of the first direction; and the protection assembly further comprises a fixing frame comprising a limiting member for covering the first opening to limit a movement of the low-voltage connector along the opposite direction of the first direction. ### Claim 5 (depends on 4) The protection assembly according to claim 4, wherein the limiting member comprises a first side plate for covering the first opening and a limiting plate disposed below the first side plate and configured to abut against an inner wall of the accommodating cavity in the opposite direction of the first direction to limit the movement of the low-voltage connector along the opposite direction of the first direction. ### Claim 6 (depends on 4) The protection assembly according to claim 4, wherein: the fixing frame further comprises an engagement member connected with the limiting member; and the engagement member is configured to be engaged with the accommodating portion. ### Claim 7 (depends on 6) The protection assembly according to claim 6, wherein: the accommodating portion further comprises an installation cavity located between the accommodating cavity and the separating portion; a first engagement opening is disposed on a side wall of the installation cavity; the engagement member comprises a first cantilever and a first buckle disposed on the first cantilever and configured to cooperate with the first engagement opening; and a ratio of a length of the first cantilever to a thickness of the first cantilever is not less than 5:1. ### Claim 8 (depends on 7) The protection assembly according to claim 7, wherein the fixing frame further comprises a second side plate, extending direction of the second side plate and extending direction of the first cantilever are the same, and a lower surface of the second side plate is lower than a lower surface of the first cantilever along the extending direction of the second side plate. ### Claim 9 (depends on 7) The protection assembly according to claim 7, wherein: the fixing frame further comprises a reinforcing rib, two ends on one side of the reinforcing rib are respectively connected with two connection plates, the two connection plates are disposed at intervals, there are two engagement members and two limiting members, and each of the two connection plates connects one of the two engagement members and one of the two limiting members; and correspondingly there are two installation cavities, and the two installation cavities are symmetrically disposed on two sides of the accommodating cavity. ### Claim 10 (depends on 4) The protection assembly according to claim 4, wherein the accommodating cavity is configured to be engaged with the low-voltage connector to accommodate the low-voltage connector. ### Claim 11 (depends on 1) The protection assembly according to claim 1, further comprising a protection cap for protecting the low-voltage connector and engaged with the low-voltage connector. ### Claim 12 (depends on 11) The protection assembly according to claim 11, wherein: the protection cap comprises a second cantilever and a body, the second cantilever is connected to the body, the second cantilever extends along a thickness direction of the body, a ratio of a length of the second cantilever to a wall thickness of the second cantilever is greater than or equal to 5:1, and a first end of the second cantilever is disposed with a second buckle; and correspondingly, a second engagement opening is disposed on the low-voltage connector and cooperates with the second buckle. ### Claim 13 (depends on 12) The protection assembly according to claim 12, wherein: the protection cap further comprises a guide post connected to the body and extending along the thickness direction of the body, one end of the guide post and the first end of the second cantilever are located on a same side of the body, the guide post and the second cantilever are parallelly disposed. ### Claim 14 (depends on 13) The protection assembly according to claim 13, wherein there are two guide posts, and the two guide posts are respectively located on two sides of the second cantilever. ### Claim 15 (depends on 13) The protection assembly according to claim 13, wherein a lower surface of one end of the guide post is lower than a lower surface of the first end of the second cantilever along an extending direction of the guide post. ### Claim 16 (depends on 12) The protection assembly according to claim 12, wherein the body is disposed with a notch along the thickness direction of the body, and the second cantilever penetrates the notch. ### Claim 17 (depends on 12) The protection assembly according to claim 12, wherein a second end of the second cantilever extends beyond the body along the thickness direction of the body. ### Claim 18 (depends on 1) A battery module, comprising a low-voltage connector, a positive lead and/or a negative lead of a busbar, and the protection assembly according to claim 1, wherein the low-voltage connector and the positive lead and/or the negative lead are located on a same side of the battery module. ### Claim 19 (depends on 4) A battery module, comprising a low-voltage connector, a positive lead and/or a negative lead of a busbar, and the protection assembly according to claim 4, wherein the low-voltage connector and the positive lead and/or the negative lead are located on a same side of the battery module. ### Claim 20 (depends on 11) A battery module, comprising a low-voltage connector, a positive lead and/or a negative lead of a busbar, and the protection assembly according to claim 11, wherein the low-voltage connector and the positive lead and/or the negative lead are located on a same side of the battery module.