CN214589159U

CN214589159U - Anti-reverse device, battery cluster and battery module thereof

Info

Publication number: CN214589159U
Application number: CN202022636607.2U
Authority: CN
Inventors: 苏林; 岳严霜; 樊朝晖; 卢世佳
Original assignee: Zhiyi New Energy Development Co ltd
Current assignee: Zhiyi New Energy Development Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-11-02
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses an anti-reverse device, which comprises a power wiring end, a main channel switch, an electronic switch, a current limiting unit, a signal acquisition management unit, a management power input end, a communication interface and a diode, wherein the connecting end of the power wiring end is connected with the connecting end of the main channel switch in series; the battery module of the utility model is formed by connecting a plurality of battery clusters in parallel, the battery cluster is formed by connecting a plurality of battery cells in series, and the chain reaction is stopped when the thermal runaway is faced in a restraining and isolating mode; when the acquisition unit judges that the working current of the main channel exceeds a set value, the main channel switch is switched off, all the charging and discharging currents pass through the bypass current limiting unit, the pre-charging and pre-discharging functions of the battery are set, and under necessary conditions, the electronic switch is switched off through the acquisition management unit, so that the full-channel separation system is realized.

Description

Anti-reverse device, battery cluster and battery module thereof

Technical Field

The patent of the utility model relates to a battery module technical field specifically is an anti-reflection device and battery cluster and battery module thereof.

Background

Lithium batteries are the highest energy density secondary power source to date. There are many advantages, but there are also potential risks, the most significant of which are the safety management and dynamic consistency life issues of the battery. The grouping technology of the existing power lithium battery mostly adopts single-channel BMS management, and is a single-channel centralized management mode. At present, a plurality of parallel modules are formed by connecting an electric core in parallel, all the parallel modules are connected in series to achieve certain target voltage, all sampling information of the modules is transmitted to a centralized BMS unit in a communication mode, and finally, a battery system which is required by system application is formed by safety management through a set of switch assembly and single channel output. In the process of battery management, the BMS collects concentrated data of each path of each parallel module, the collected content comprises voltage, current, temperature and the like, the collected data are uploaded to a centralized BMS management system and a control unit, and the BMS controls a protection switch of a terminal in real time.

Patent application No. CN201910690532.5 discloses a battery anti-reverse connection circuit and a charger, and although the traditional battery management mode is seemingly simple in structure and has certain intelligence, the following problems exist: because each parallel module has too large electric quantity, balance can not be implemented, thereby causing the serious problem of consistency attenuation of the battery in long-term use and repeated charge and discharge processes; in the single-channel design mode, under the condition of high-power work, the load pressure of a channel is inevitably caused, for example, an electric automobile is taken as an example, because the design voltage of a battery pack of the electric automobile is generally over 300 volts, higher requirements are provided for all control switching devices, the improvement of the withstand voltage level represents the improvement of cost and the reduction of reliability, in addition, not only hundreds of welding points are arranged on the channel, but all driving power of the automobile is realized by the channel, in the process, the working current of the channel is generally over 200-300 amperes, and the peak current even thousands causes the channel to be overheated, so that the battery is overheated, and the thermal runaway is caused; generally, the reaction time of thermal runaway is within 5 seconds, the power is high, and once the thermal runaway occurs, the thermal runaway cannot be controlled or inhibited, so that an anti-reflection device, a battery cluster and a battery module thereof are provided to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-reflection ware and battery cluster and battery module thereof to solve traditional battery management mode that proposes in the above-mentioned background art and see simple structure on the surface, have certain intellectuality, nevertheless have following problem: because each parallel module has too large electric quantity, balance can not be implemented, thereby causing the serious problem of consistency attenuation of the battery in long-term use and repeated charge and discharge processes; in the single-channel design mode, under the condition of high-power work, the load pressure of a channel is inevitably caused, for example, an electric automobile is taken as an example, because the design voltage of a battery pack of the electric automobile is generally over 300 volts, higher requirements are provided for all control switching devices, the improvement of the withstand voltage level represents the improvement of cost and the reduction of reliability, in addition, not only hundreds of welding points are arranged on the channel, but all driving power of the automobile is realized by the channel, in the process, the working current of the channel is generally over 200-300 amperes, and the peak current even thousands causes the channel to be overheated, so that the battery is overheated, and the thermal runaway is caused; generally, the reaction time of thermal runaway is within 5 seconds, and the reaction is powerful, so that once thermal runaway occurs, the thermal runaway cannot be controlled or inhibited.

In order to achieve the above object, the patent of the utility model provides a following technical scheme:

the utility model provides an anti-reverse device, includes power wiring end, main channel switch, electronic switch, current-limiting unit, signal acquisition management unit, management power input, communication interface and diode, the link of power wiring end and the link series connection of main channel switch, electronic switch's link and current-limiting unit's link series connection, and with main channel switch's link parallel connection, the link of diode and main channel switch's link parallel connection, signal acquisition management unit's link and main channel switch's link electric connection, electronic switch's link and diode's link electric connection, signal acquisition management unit's link respectively with communication interface and management power input's link electric connection.

Preferably, the connection end of the main channel switch is electrically connected with a temperature sampling block, and the temperature sampling block is a Sudoku temperature sampling block.

The utility model provides a battery cluster, includes battery cluster body, prevents reverse body and battery cell, the battery cluster body comprises preventing reverse body and battery cell, and the series connection forms the group battery between the link of a plurality of battery cells, the battery cluster body is formed by the link series connection of preventing reverse body and the link of group battery.

A battery module comprises voltage-eliminating capacitors, wherein the connecting ends of a plurality of battery cluster bodies are connected in parallel and connected with the connecting end of one voltage-eliminating capacitor in parallel.

Compared with the prior art, the utility model provides an anti-reflection device and battery cluster and battery module thereof possesses following beneficial effect:

1. the battery module of the utility model is formed by connecting a plurality of battery clusters in parallel, the battery cluster is formed by connecting a plurality of battery cells in series, and the chain reaction is stopped when the thermal runaway is faced in a restraining and isolating mode;

2. the utility model discloses a working current when collection unit judgement main entrance surpasss the setting value, breaks off the main entrance switch promptly, and all charge-discharge current all pass through bypass current-limiting unit, solve battery precharge and the function setting of discharging in advance, and under the necessary condition, electronic switch cuts off through gathering the administrative unit, realizes that the full passageway breaks away from the system.

Drawings

FIG. 1 is a circuit diagram of an anti-reverse device according to the present invention;

fig. 2 is a circuit diagram of a battery module according to the present invention.

In the figure: 1. a power terminal; 2. a main channel switch; 3. an electronic switch; 4. a current limiting unit; 5. a signal acquisition management unit; 6. a management power input terminal; 7. a communication interface; 8. a diode; 9. a temperature sampling block; 10. a battery cluster body; 11. an anti-reverse body; 12. a battery cell; 13. and a voltage-eliminating capacitor.

Detailed Description

The technical solution 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 some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.

The first embodiment is as follows:

according to the embodiment, the anti-reverse device comprises a power wiring terminal 1, a main channel switch 2, an electronic switch 3, a current limiting unit 4, a signal acquisition management unit 5, a management power input terminal 6, a communication interface 7 and a diode 8, wherein the connecting end of the power wiring terminal 1 is connected with the connecting end of the main channel switch 2 in series, the connecting end of the electronic switch 3 is connected with the connecting end of the current limiting unit 4 in series and is connected with the connecting end of the main channel switch 2 in parallel, the connecting end of the diode 8 is connected with the connecting end of the main channel switch 2 in parallel, the connecting end of the signal acquisition management unit 5 is electrically connected with the connecting end of the main channel switch 2, the connecting end of the electronic switch 3 is electrically connected with the connecting end of the diode 8, the connecting end of the signal acquisition management unit 5 is respectively electrically connected with the connecting end of the communication interface 7 and the management power input terminal 6, the connecting end of the main channel switch 2 is electrically connected with a temperature sampling block 9, the temperature sampling block 9 is a squared temperature sampling block.

Example two:

according to a battery cluster of this embodiment, including battery cluster body 10, prevent reverse body 11 and battery cell 12, battery cluster body 10 is by preventing reverse body 11 and battery cell 12 and forming, and establish ties between the link of a plurality of battery cells 12 and form the group battery, and battery cluster body 10 is by preventing reverse body 11's link and the link series connection of group battery and forming.

Example three:

a battery module according to the present embodiment includes a voltage-dropping capacitor 13, and a plurality of connection terminals of the cell cluster body 10 are connected in parallel and connected in parallel with a connection terminal of a voltage-dropping capacitor 13.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-reverser, includes power wiring end (1), main channel switch (2), electronic switch (3), current limiting unit (4), signal acquisition management unit (5), management power input (6), communication interface (7) and diode (8), its characterized in that: the power wiring end is characterized in that the connecting end of the power wiring end (1) is connected with the connecting end of the main channel switch (2) in series, the connecting end of the electronic switch (3) is connected with the connecting end of the current limiting unit (4) in series, and is connected with the connecting end of the main channel switch (2) in parallel, the connecting end of the diode (8) is connected with the connecting end of the main channel switch (2) in parallel, the connecting end of the signal acquisition management unit (5) is electrically connected with the connecting end of the main channel switch (2), the connecting end of the electronic switch (3) is electrically connected with the connecting end of the diode (8), and the connecting end of the signal acquisition management unit (5) is electrically connected with the connecting end of the communication interface (7) and the management power input end (6) respectively.

2. A reverse preventer according to claim 1, wherein: the connecting end of the main channel switch (2) is electrically connected with a temperature sampling block (9).

3. A reverse preventer according to claim 2, wherein: the temperature sampling block (9) is a Sudoku temperature sampling block.

4. A battery cluster comprises a battery cluster body, an anti-reflection body (11) and a battery cell (12), and is characterized in that: the anti-reflection device body (11) is the anti-reflection device of any claim 1 to 3, the battery cluster body is composed of the anti-reflection device body (11) and battery cells (12), the connecting ends of the battery cells (12) are connected in series to form a battery pack, and the battery cluster body is formed by connecting the connecting end of the anti-reflection device body (11) and the connecting end of the battery pack in series.

5. A battery module comprising a voltage-dissipating capacitor (13), characterized in that: a battery cluster according to claim 4, wherein a plurality of said connection terminals of said battery cluster body are connected in parallel and connected in parallel with a connection terminal of a voltage-eliminating capacitor (13).