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一种静电纺丝与纳米磁改性地聚物电容增效方法，属于电容器技术领域，该方法通过削减杂散气孔、磁化纤维定向和离子通道构建，显著提升了地聚物电容器的电化学性能，本发明解决了传统地聚物电容器能量密度低、功率密度不足和循环稳定性差的问题，显著提高了电容器的能量密度(≥25Wh kg‑1)、功率密度(≥1500W kg‑1)和比电容(≥60F g‑1)，并延长了循环寿命(≥10000次，容量保持率≥80％)。本发明工艺简单、成本低廉，适用于建筑储能一体化构件。

Batterie, dadurch gekennzeichnet, dass sie umfasst: eine erste Batteriezelle (31) und zweite Batteriezelle (32), die benachbart angeordnet sind, sowie eine Funktionskomponente (33), die in einem von einer ersten Oberfläche (311) der ersten Batteriezelle (31) und einer zweiten Oberfläche (321) der zweiten Batteriezelle (32) gebildeten Spalt angeordnet ist; eine Füllkomponente (34) und/oder eine erste Isolationskomponente (351), wobei die Füllkomponente (34) den Rand des Spalts ausfüllt, und wobei die erste Isolationskomponente (351) dicht an den Rändern einer dritten Oberfläche (312) der ersten Batteriezelle (31) und einer vierten Oberfläche (322) der zweiten Batteriezelle (32) anliegt und den von der ersten Oberfläche (311) und der zweiten Oberfläche (321) gebildeten Spalt abdeckt, und wobei die dritte Oberfläche (312) die erste Oberfläche (311) schneidet und die vierte Oberfläche (322) die zweite Oberfläche (321) schneidet.

本申请涉及电池技术领域，提供一种防爆阀、电池包及用电设备，该防爆阀包括防爆阀本体、第一卡扣结构以及第一加强筋，该防爆阀本体包括内侧结构部和外侧结构部，第一卡扣结构连接于所述内侧结构部，所述外侧结构部至少包括第一结构部和第二结构部，所述第一结构部和所述第二结构部之间形成有凹陷区域，所述第一加强筋位于所述凹陷区域内且连接于所述第一结构部和所述第二结构部。本申请实施例可以提升防爆阀的结构强度，从而保证电池包的密封性能和新能源车辆的安全性能。

An electrical device includes a battery pack. The battery pack includes a battery pack housing. The battery pack housing includes a tray and n layers of cold plates, wherein the tray includes a first side beam and a second side beam opposite to each other, m steps are separately disposed on either opposite side of the first side beam and the second side beam, and m≥3; two opposite ends of the n layers of cold plates are disposed on corresponding steps of the first side beam and the second side beam, each layer of cold plate corresponds to one step, each layer of cold plate is used for arrangement of a layer of battery cells, 2≤n≤m, and the m steps and the n layers of cold plates are numbered in an ascending order from the bottom to the top of the first side beam; and in a direction from the first side beam to the second side beam, a size of an (n-1) layer of cold plate.

A battery pack (100) and an energy storage power supply are disclosed. The battery pack (100) comprises a casing (10) and a battery module (20). The casing (10) comprises a first case (11) and a second case (12). The first case (11) is detachably connected to the second case (12). The first case (11) comprises a first inner wall (1111) opposite to the second case (12) and is provided with a first positioning portion (1112) on the first inner wall (1111). The second case (12) comprises a second inner wall (1212) opposite to the first case (11) and is provided with a second positioning portion (1213) on the second inner wall (1212). Two ends of the battery module (20) are respectively inserted into the first positioning portion (1112) and the second positioning portion (1213).

一种电池包防爆透气阀，包括第一膜片、第二膜片和内设有阀孔的阀体，阀孔的一端设有阀盖，阀盖设有连通阀孔和外界的泄压孔；阀孔的另一端的内周壁设有第一阶梯台，第一阶梯台背向阀盖的一侧设有阀座，阀座设有相互独立的导流孔和防爆孔，第一阶梯台设有连通导流孔和阀孔的第一通孔，防爆孔的一端通过第一阶梯台的内孔连通阀孔，防爆孔另一端的内周壁设有凸起的第二阶梯台，第二阶梯台设有第二通孔，第一膜片呈环形且安装于第一阶梯台以实现对第一通孔的覆盖，第二膜片安装于第二阶梯台以实现对第二通孔的覆盖，阀盖设有朝向第二膜片的刺针。上述方案有效避免了正常工况下防爆透气阀的非预期开启和失效，同时确保了安全保障性能。

一种电池单体(500)、电池包(400)及用电装置(1000)，电池单体(500)包括外壳(510)、电极组件(520)和转接件(100)，外壳(510)设有两个电极端子(511，512)，电极组件(520)包括极性相反的两个极耳(521，522)，转接件(100)设于电极组件(520)与外壳(510)之间且包括两个转接部(110，120)，第一转接部(110)与第一电极端子(511)和第一极耳(521)连接，第二转接部(120)与第二电极端子(512)和第二极耳(522)电连接，部分第一转接部(110)和第二转接部(120)在电池单体(500)的轴向上重叠设置。

Provided is a battery rack that is easy to install, an energy storage system, and a power generation system. The battery rack includes a plurality of battery modules; and a rack case configured to accommodate the plurality of battery modules and mount another rack case above, wherein the rack case includes a fixing unit provided on a lower end portion of the rack case, wherein the fixing unit includes a main body part of a plate shape, wherein the main body part includes a fixing groove formed to be recessed from an edge of the main body part, and wherein the rack case includes at least one bolt provided on an upper end portion of the rack case and configured to be inserted into the fixing groove included in a lower end of the other rack case.

Provided in the present disclosure are a separator coating, a composite separator comprising same, and a secondary battery and a preparation method therefor. The separator coating comprises a first coating and a second coating provided on the surface of the first coating, the second coating being close to the positive electrode side. On the basis of the total mass of the materials of the first coating being 100%, the materials of the first coating include a ceramic material having a mass percentage of 70%-92%, an ion-conductive material having a mass percentage of 3%-24%, and an adhesive having a mass percentage of 3%-6%. The separator coating provided in the present disclosure can be transferred in situ to the surface of the positive electrode by means of the pressure during battery assembly, thereby improving the safety of the secondary battery.

一种电芯及终端装置。电芯包括电极组件及包装袋。电极组件的至少一个角位设有第一圆弧，沿第一方向观察，第一圆弧的半径为R1。包装袋包括主体部，电极组件设置于主体部内。主体部的与第一圆弧相邻的角位设有第二圆弧，第二圆弧与第一圆弧间隔设置。沿第一方向观察，第二圆弧的半径为R2，R2＜R1。第一方向为电芯的厚度方向。通过第二圆弧与第一圆弧间隔设置，R2＜R1，以使第一圆弧相较于第二圆弧钝化，有利于在第二圆弧和第一圆弧形成缓冲空间。当电极组件在循环过程中产生膨胀时，缓冲空间能够降低第一圆弧和第二圆弧接触并产生干涉的风险，进而降低包装袋挤压电极组件的角位导致电芯变形或破损的风险，提高电芯的安全性能。