阅读说明：本技术 一种电池系统及接线方法 (Battery system and wiring method ) 是由 司淑坤 赵峰波 沈家安 于 2021-06-11 设计创作，主要内容包括：本发明公开了一种电池系统,包括多个电池串,多个电池串之间串联连接后一端连接总负接口,另一端连接总正接口,每个电池串均包含多个并联电池组,每一串的多个并联电池组之间并联连接,每个并联电池组均由多个电池并联组成,采用本发明的方法,在紧急情况下,可以自动切断每个电池最小模块单元的功率连接回路,易于更换事故损坏的子模块,将事故风险损失降到最低,有效防止意外事故的过快蔓延。(The invention discloses a battery system, which comprises a plurality of battery strings, wherein one end of each battery string is connected with a total negative interface after the battery strings are connected in series, the other end of each battery string is connected with a total positive interface, each battery string comprises a plurality of parallel battery packs, the parallel battery packs of each string are connected in parallel, and each parallel battery pack is formed by connecting a plurality of batteries in parallel.)

1. The utility model provides a battery system, its characterized in that includes a plurality of battery clusters, and the total negative interface is connected to one end after the series connection between a plurality of battery clusters, and the total positive interface is connected to the other end, and every battery cluster all contains a plurality of parallelly connected group battery, and parallelly connected between a plurality of parallelly connected group battery of every cluster, every parallelly connected group battery is parallelly connected by a plurality of batteries and is constituteed.

2. The battery system of claim 1, wherein a fuse is connected to each parallel battery pack.

3. The battery system of claim 1, wherein an adjustable resistor is connected to each parallel battery pack.

4. The battery system of claim 1, wherein each parallel battery pack is independently removable and replaceable.

5. The battery system of claim 1, wherein each battery string is independently removable and replaceable.

6. The battery system of claim 1, wherein each battery string comprises the same number of parallel battery packs, and each parallel battery pack comprises the same number of batteries.

7. A battery system connection method is characterized in that a plurality of batteries are connected in parallel to form a parallel battery pack, then the plurality of parallel battery packs are connected in parallel to form a battery string, the plurality of battery strings are connected in series to form a battery system, and finally one end of the battery system is connected with a total negative interface while the other end of the battery system is connected with a total positive interface.

Technical Field

The invention relates to the technical field of batteries, in particular to a battery system and a wiring method.

Background

With the rapid development of new energy technologies, chemical energy storage is applied to more and more large energy storage systems. In recent years, in electric vehicles and large energy storage power stations, more safety problems occur, and the use safety problem of a battery system is more and more concerned. In practical applications, a large-scale battery system is formed by connecting a plurality of battery modules in series and in parallel to achieve the required voltage and capacity. As battery systems continue to grow in size, the connection systems become more complex, creating many new challenges to the safety issues of the systems.

The series and parallel connection of the battery cells in the battery system is usually realized by a metal conductor, and materials such as copper, aluminum, nickel and the like or alloy materials thereof are more. In order to pursue higher capacity, a plurality of battery cells are usually realized in parallel, and the complexity of the system is increased by the parallel connection of too many battery cells, so that the maintenance is inconvenient and the maintenance cost of the battery module is increased. Because the characteristics of the battery cells are limited, a plurality of connecting bars are irregular in shape, too many battery cells are connected in parallel, the complexity of the connecting part is increased, the component standardization is not facilitated, and the cost of the connecting part is indirectly increased.

The conventional common battery connection method is shown in fig. 1, and the connection method of the whole battery system is to realize the required capacity by parallel connection and then realize the required voltage by series connection; the system can be provided with the fuse on the major loop, can cut off the major loop in emergency, but, when connecting more electric cores in parallel, be difficult to realize the protection to parallelly connected inside battery.

Disclosure of Invention

It is an object of the present invention to provide a battery system to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a battery system, includes a plurality of battery clusters, and total negative interface is connected to one end behind the series connection between a plurality of battery clusters, and total positive interface is connected to the other end, and every battery cluster all contains a plurality of parallelly connected group battery, and parallel connection between a plurality of parallelly connected group battery of every cluster, every parallelly connected group battery is parallelly connected by a plurality of batteries and is constituteed.

As a further technical scheme of the invention, each parallel battery pack is connected with a fuse.

As a further technical scheme of the invention, each parallel battery pack is connected with an adjustable resistor.

As a further technical scheme of the invention, each parallel battery pack can be independently disassembled and replaced.

As a further technical scheme of the invention, each battery string can be independently disassembled and replaced.

As a further technical solution of the present invention, each battery string includes the same number of parallel battery packs, and each parallel battery pack includes the same number of batteries.

A battery system connection method comprises the steps of firstly connecting a plurality of batteries in parallel to form a parallel battery pack, then connecting the plurality of parallel battery packs in parallel to form a battery string, then connecting the plurality of battery strings in series to form a battery system, and finally connecting one end of the battery system with a total negative interface and the other end of the battery system with a total positive interface.

Compared with the prior art, the invention has the beneficial effects that: by adopting the method, the power connection loop of the minimum module unit of each battery can be automatically cut off in an emergency, the submodule damaged by an accident is easy to replace, the accident risk loss is reduced to the minimum, and the rapid spread of the accident is effectively prevented.

Drawings

Fig. 1 is a circuit diagram of the prior art.

Fig. 2 is a diagram of a battery system connection structure according to the present invention.

FIG. 3 is a wiring diagram of example 2.

FIG. 4 is a wiring diagram of example 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2, embodiment 1: the utility model provides a battery system, includes a plurality of battery strings, total negative interface is connected to one end behind the series connection between a plurality of battery strings, total positive interface is connected to the other end, and every battery string all contains a plurality of parallelly connected group battery, parallel connection between a plurality of parallelly connected group battery of every string, and every parallelly connected group battery is parallelly connected by a plurality of batteries and is constituteed, and the parallelly connected group battery quantity that every battery string contains is the same, and the battery quantity that every parallelly connected group battery contains is the same.

In embodiment 2, as shown in fig. 3, each parallel battery pack is connected to a fuse, so that in an emergency, the power connection loop of the minimum module unit of each battery can be automatically cut off, the damaged sub-module of an accident is easy to replace, the accident risk loss is minimized, and the rapid spread of the accident is effectively prevented.

In embodiment 4, as shown in fig. 3, each parallel battery pack is connected with an adjustable resistor, each parallel battery pack can be independently detached and replaced, each battery string can be independently detached and replaced, and the current sharing between the parallel submodules can be realized by adjusting the resistance value, so that the new module and the original module have the same internal resistance loop.

The invention also discloses a battery system connection method, which comprises the steps of firstly connecting a plurality of batteries in parallel to form a parallel battery pack, then connecting the plurality of parallel battery packs in parallel to form a battery string, then connecting the plurality of battery strings in series to form a battery system, and finally connecting one end of the battery system with the total negative interface and the other end of the battery system with the total positive interface.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.