Optimal Interconnection for Prismatic Battery Systems in Electric Vehicles

时间： 2021-08-21 来源：Rogers

代理服务

技术支持

批量订货

Many of the electrical, mechanical, and thermal requirements are also applicable to prismatic cells. However, the manner in which a battery pack in the vehicle is designed depends on the OEM´s preference. Building a battery system with fewer large prismatic cells, similar to what was used in the BMW i3, decreases the overall system complexity. Additionally, it opens the possibility of using a modular design, compared to the new modular electric drive matrix (MEB) platform from Volkswagen. The MEB battery module platform is designed to accommodate any form of prismatic or pouch cells. However, large and more complex battery systems, like those applied by Tesla using a cylindrical cell, yield better pack density and overall enhance system reliability in the instance of a single cell failure.

The major design difference in the current collector busbar for the cylindrical cells has the interconnector directly joined onto the cell housing. Whereas, pouch and prismatic cells have individual externally located connector tabs (electrical lugs) which are joined to the interconnector. However, in modern designs, individual connector tabs are being replaced by a single current collector busbar, particularly for the usage of cylindrical cell connections.

To connect the prismatic cells manufacturers typically use high thickness aluminum conductors, compared to the cylindrical cell due to the cell´s higher Ah capacity. As a benefit, the Aluminum in the current collector busbar offers large weight and cost savings.

The connection of prismatic cells in one assembly involves a similar joining process to cylindrical and pouch cells between current collector tabs or busbars and electrode foil(s) between the collector tab and the battery terminal. Ultrasonic and laser welding are most commonly used for joining current collector tabs and busbars with electrode foil and case sealing. Generally, the positive and negative terminals of large prismatic cells use mechanical nuts and bolts assembly.

Currently, there is an existing design which due to complexity is able to integrate a flexible printed circuit (FPC) for sensing and control of battery cells on top of the collector busbar. This design typically accommodates voltage and temperature sensing lines for the Battery Management Systems (BMS).

Overall, we must be mindful considering the electrical cell connection is an essential element of the battery pack design and the selection of the current collector busbar for the battery cell is not always as simple.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由董慧转载自Rogers，原文标题为:Optimal Interconnection for Prismatic Battery Systems in Electric Vehicles，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

Rogers Announces Termination of Merger Agreement with DuPont

Rogers announced the termination of its definitive merger agreement with DuPont de Nemours, Inc. (“DuPont”). In connection with the termination of the merger agreement, Rogers has received a regulatory termination fee of $162.5 million from DuPont.

2022-11-08 - 原厂动态代理服务技术支持批量订货

Looking Closer at Resonant Capacitors in Electric Vehicles

There are many types of DC/DC converters, and in this article, Knowles willl be focusing on resonant DC/DC converters.

2022-02-27 - 原厂动态代理服务技术支持批量订货

ROGERS层压板/高频板选型表

罗杰斯/ROGERS提供以下技术参数的层压板/高频板选型，超低损耗，低至0.0004(Df) ；超大尺寸：54inchX24inch、52inchX40inch、50.1inchX110inch 等；丰富介电常数：2 -12.85 (Dk)；超薄介质，低至1mil

产品型号	品类	产品系列	介电常数（Dk）	正切角损耗（Df）	介质厚度(mm)(mil)	导热系数W/(m·K)	铜箔类型	铜箔1厚度	铜箔2厚度	尺寸(inch)
5880LZNS 24X18 H1/H1 R4 0100+-001/DI	层压板	RT/duroid® 5880LZ	2	0.0027	0.254mm(10mil)	0.33	电解铜	H1	H1	24X18

选型表 - ROGERS 立即选型

ROGERS 半固化片选型表

罗杰斯/ROGERS提供以下技术参数的半固化片选型，超低损耗，介电常数（Dk）：2.28-10.02，正切角损耗（Df）：0.002-11.2，超大尺寸：24inchX36inch 、25.5inchX18inch、48inchX36inch等，超薄介质。

产品型号	品类	产品系列	介电常数（Dk）	正切角损耗（Df）	厚度(mils)(mm)(μm)	尺寸(inch)	导热系数W/(m·K)
3003 BOND PLY 25.5X18 005 R3	半固化片	RO3003	3.00±0.04	3	0.005” (0.13mm)	25.5X18	0.5

选型表 - ROGERS 立即选型

Looking Closer at DC Link Capacitors in Electric Vehicles

In electric vehicle (EV) applications, DC link capacitors help offset the effects of inductance in inverters, motor controllers, and battery systems. They also serve as filters that protect EV subsystems from voltage spikes, surges, and electromagnetic interference (EMI).

2024-07-09 - 技术探讨代理服务技术支持批量订货

【经验】如何选择合适介电常数的Rogers高频板材？

在选择板材rogers高频板材时，最关注的指标是介电常数。但也有一部分工程师对介电常数理解的比较片面，在选择rogers高频板材时，会遇到一些问题，通过本文讲解，可以更好的帮助工程师快速准确的选择合适介电常数的板材。介电常数和频率相关，同一种板材的不同厚度有时会有一定差异。rogers板材的范围1.96（RT/duriod 5880LZ）-13(TMM13i)。

2018-08-19 - 设计经验代理服务技术支持批量订货

Rogers苏州工厂生产的产品的临时交货期延长

描述- Rogers公司宣布，由于近期需求激增，其苏州工厂生产的多个产品将临时延长交货期。预计这种影响将是短期性的，并计划从2024年5月初开始逐步减少交货期。具体产品及其新的交货期已附在邮件中。公司正在评估现有订单的恢复日期，并请求客户提供预测信息以协助决策。

型号- RO4830™,RO4535™,KAPPA® 438,DICLAD880™,RO4533™,RO4000™,DICLAD®,RO3003G2™,RO3035™,RO3003™,RO4003C™,RO4835™,RO3003G2™ PM,TC350™,RO4534™,RO4730G3™ R2,RO4835T™,RO4233™,RO4350B™,RO3006™,AD255™,AD300™,RO3010™,RO3000™,TC350™ PLUS

April 9th, 2024 - ROGERS - 产品变更通知及停产信息代理服务技术支持批量订货

Exploring the Capacitor Technologies Needed in Electric Vehicles

The electrical power systems in most modern technologies, like electric vehicles (EVs), are complex. In EVs specifically, power systems are responsible for performing many tasks such as converting AC to DC and DC to AC as well as managing changing power levels in DC/DC conversion. When performing these tasks, manipulating AC voltages and removing noise from DC voltage requires passive components such as capacitors, to perform many “jobs” inside the power system.

2024-05-14 - 技术探讨代理服务技术支持批量订货

Rogers苏州工厂碳足迹减排项目的计划停工时间

描述- Rogers苏州工厂计划于2024年3月11日至3月16日进行升级改造，期间将暂停生产，影响交货期。此次停工旨在实施碳减排项目，符合公司全球ESG目标。改造完成后，预计交货期将恢复至项目前水平。公司正努力提前完成订单，并请求客户提前下单。

March 1st, 2024 - ROGERS - 产品变更通知及停产信息代理服务技术支持批量订货

Rogers高频板RO4350B板材在24GHz时介电常数和损耗因子

Rogers高频板RO4350B达到了成本和高频性能的最优化，是最具性价比的低损耗高频板材。为了更好的实现设计要求，笔者在设计微带阵列天线时研究了基于Rogers高频板RO4350B板材的微带传输线在24GHz的插入损耗。

2024-04-29 - 设计经验

ROGERS 粘结膜选型表

ROGERS 粘结膜选型：介电常数（Dk）：2.32-2.35，正切角损耗（Df）：0.0013-0.0025，Lengths（ft）：30ft-150ft，熔化温度(℃）：397°F (203°C)，多种尺寸：12X18/24X18/24X30等。

产品型号	品类	产品系列	介电常数（Dk）	正切角损耗（Df）	Lengths（ft）	熔化温度(℃）	尺寸(inch)	厚度（mm）
6700 2.35 24X30LFX0.003	粘结膜	CuClad 6700	2.35	0.0025	30ft	397°F (203°C)	24X30	0.0030" (0.08mm)

选型表 - ROGERS 立即选型

Rogers Corporation主动承担降低RO3000®产品线供应链的风险

描述- Rogers Corporation为提高RO3000®产品线的供应链韧性，与多个PTFE树脂供应商合作，确保材料供应的持续可靠性。由于供应商退出，部分产品将更换PTFE供应商。从2023年9月开始，RO3000®层压板客户将逐步过渡到RO3010™，预计2024年第一季度末完成。Rogers已对新产品进行测试，并与现有产品进行对比，分析表明两者性能无显著差异。

型号- RO3006™,RO3003G2™,RO3210™,RO3206™,RO3035™,RO3003™,RO3000®,RO3203™,RO3010™

June 26, 2023 - ROGERS - 产品变更通知及停产信息代理服务技术支持批量订货

ROGERS 粘结片选型表

ROGERS提供粘结片选型：介电常数（Dk）：2.94-2.97，正切角损耗（Df）：0.03-0.0012，厚度(mm)：0.038-0.102，导热系数W/(m·K)：0.4-0.5。

产品型号	品类	产品系列	介电常数（Dk）	正切角损耗（Df）	厚度(mm)	尺寸(mm)	绝缘强度(V/mil)	热变化率(ppm/℃)	导热系数W/(m·K)	吸湿率
2929 BOND PLY 12X18 0015+-10%	粘结片	2929	2.94±0.05	0.003	0.0015” (0.038mm) +/- 10%	12”X18” (305mm X457mm）	2500	-6	0.4	0.10%

选型表 - ROGERS 立即选型

Fuses are not only Available in 3C Products but also in Regular Cars or Electric Vehicles

Fuses, also known as fuses, are defined as “fuse links“ by international standards. They are electrical components installed in a circuit to ensure safe operation of the circuit.

2023-11-18 - 技术探讨代理服务技术支持批量订货