CN205141742U - Large capacity battery access system that connects in parallel - Google Patents
Large capacity battery access system that connects in parallel Download PDFInfo
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- CN205141742U CN205141742U CN201520912252.1U CN201520912252U CN205141742U CN 205141742 U CN205141742 U CN 205141742U CN 201520912252 U CN201520912252 U CN 201520912252U CN 205141742 U CN205141742 U CN 205141742U
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- switch module
- access switch
- battery pack
- bus
- management system
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Abstract
The utility model provides a large capacity battery access system that connects in parallel, including a plurality of parallelly connected large capacity group battery units and a load, every large capacity group battery unit includes large capacity group battery and plug, the large capacity group battery passes through the plug and is connected with the load, every large capacity group battery unit is at different time access system, the large capacity group battery includes many strings of group batteries, detect resistance, battery management system, insert the switch module, insert switch module and current -limiting resistor in advance, many strings of group batteries, insert the equal and connector assembly of switch module and battery management system, insert the switch module in advance and pass through current -limiting resistor and connector assembly, it is connected with battery management system's a control end to insert the controlled end of switch module, it is connected with another control end of battery management system to insert the controlled end of switch module in advance. Implement the utility model discloses a large capacity battery access system that connects in parallel has following beneficial effect: the group battery can safe be incorporated into.
Description
Technical field
The utility model relates to field of battery management, particularly a kind of high capacity cell connecting system in parallel.
Background technology
Large-capacity battery pack can there are the following problems when accessing: when the residual capacity due to battery pack is inconsistent; voltage is also different; the voltage of the battery pack that residual capacity is high is also high; action in parallel is carried out when the residual capacity of many group large-capacity battery pack is different; great electric current will be produced, cause battery pack to enter short-circuit condition, or burn out battery pack; or burn out baffle, or enter guard mode and cause battery pack normally to work.So battery pack can not be incorporated to safely.
Utility model content
The technical problems to be solved in the utility model is, the defect that the above-mentioned battery pack for prior art can not be incorporated to safely, the high capacity cell providing a kind of battery pack to be incorporated to safely connecting system in parallel.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of high capacity cell connecting system in parallel, comprise large-capacity battery pack unit and a load of multiple parallel connection, each described large-capacity battery pack unit comprises large-capacity battery pack and plug, described large-capacity battery pack is connected with described load by described plug, each described large-capacity battery pack unit is at different time connecting system, described large-capacity battery pack comprises multi-string battery group, detect resistance, battery management system, access switch module, pre-access switch module and current-limiting resistance, one end of described multi-string battery group is connected with described plug, its other end by described detection resistance respectively with one end of described battery management system, one end of access switch module is connected with one end of pre-access switch module, the other end of described battery management system is connected with described plug, the other end of described access switch module is connected with described plug, the other end of described pre-access switch module is connected by the other end of described current-limiting resistance with described access switch module, the controlled end of described access switch module is connected with a control end of described battery management system, the described controlled end of pre-access switch module is connected with another control end of described battery management system.
In high capacity cell described in the utility model connecting system in parallel, also comprise bus, described plug also comprises first current legs, second largest current legs and small-signal pin, one end of described multi-string battery group is connected with the anode of described bus by described first current legs, the other end of described battery management system is connected with the anode of described bus by described small-signal pin, the other end of described access switch module is connected with the negative terminal of described bus by described second largest current legs, the anode of described bus is connected with one end of described load, the negative terminal of described bus is connected with the other end of described load.
In high capacity cell described in the utility model connecting system in parallel, also comprise bus switch, the anode of described bus is connected by described bus switch one end with described load.
In high capacity cell described in the utility model connecting system in parallel, described access switch module or pre-access switch module are metal-oxide-semiconductor.
In high capacity cell described in the utility model connecting system in parallel, described access switch module or pre-access switch module are relay.
In high capacity cell described in the utility model connecting system in parallel, described access switch module or pre-access switch module are insulated gate bipolar transistor.
Implement high capacity cell of the present utility model connecting system in parallel, there is following beneficial effect: owing to using large-capacity battery pack unit and a load of multiple parallel connection, each large-capacity battery pack unit comprises large-capacity battery pack and plug, large-capacity battery pack is connected with load by plug, each large-capacity battery pack unit is at different time connecting system, large-capacity battery pack comprises multi-string battery group, detect resistance, battery management system, access switch module, pre-access switch module and current-limiting resistance, access switch module is all connected with battery management system with pre-access switch module, by the control of battery management system, namely battery management system control respectively access switch module and pre-access switch module connect in the different time, so its battery pack can be incorporated to safely.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation in the utility model high capacity cell connecting system in parallel embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In the utility model high capacity cell connecting system embodiment in parallel, the structural representation of its high capacity cell connecting system in parallel as shown in Figure 1.In Fig. 1, this high capacity cell connecting system in parallel comprises large-capacity battery pack unit and a load 3 of multiple parallel connection, each large-capacity battery pack unit comprises large-capacity battery pack and plug, large-capacity battery pack is connected with load 3 by plug, each large-capacity battery pack unit is at different time connecting system, large-capacity battery pack comprises multi-string battery group, detect resistance, battery management system, access switch module, pre-access switch module and current-limiting resistance, one end of multi-string battery group is connected with plug, the other end of multi-string battery group by detect resistance respectively with one end of battery management system, one end of access switch module is connected with one end of pre-access switch module, the other end of battery management system is connected with plug, the other end of access switch module is connected with plug, the other end of pre-access switch module is connected by the other end of current-limiting resistance with access switch, the access controlled end of switch is connected with a control end of battery management system, the controlled end of pre-access switch module is connected with another control end of battery management system.Each large-capacity battery pack unit at different time connecting system, namely battery management system control respectively access switch module and pre-access switch module the different time connect, so its battery pack can be incorporated to safely.
It is worth mentioning that, in the present embodiment, two large-capacity battery pack unit are depicted in Fig. 1, for convenience of description, these two large-capacity battery pack unit are called the first large-capacity battery pack unit 1 and the second large-capacity battery pack unit 2, first large-capacity battery pack unit 1 comprises the first large-capacity battery pack 11 and plug 12, first large-capacity battery pack 11 is connected with load 3 by the first plug 12, first large-capacity battery pack 11 comprises the first multi-string battery group 111, first detects resistance R11, first battery management system 112, first access switch module S11, first pre-access switch module S12 and the first current-limiting resistance R12, one end of first multi-string battery group 111 is connected with the first plug 12, the other end of the first multi-string battery group 111 by first detect resistance R11 respectively with one end of the first battery management system 112, one end of first access switch module S11 is connected with one end of the first pre-access switch module S12, the other end of the first battery management system 112 is connected with the first plug 12, the other end of the first access switch module S11 is connected with the first plug 12, the other end that the other end of the first pre-access switch module S12 accesses switch module S11 by the first current-limiting resistance R12 and first is connected, the controlled end of the first access switch module S11 is connected with a control end of the first battery management system 112, the controlled end of the first pre-access switch module S12 is connected with another control end of the first battery management system 112.
In the present embodiment, second large-capacity battery pack unit 2 comprises the second large-capacity battery pack 21 and plug 22, second large-capacity battery pack 12 is connected with load 3 by the second plug 22, second large-capacity battery pack 21 comprises the second multi-string battery group 211, second detects resistance R21, second battery management system 212, second access switch module S21, second pre-access switch module S22 and the second current-limiting resistance R22, one end of second multi-string battery group 111 is connected with the second plug 22, the other end of the second multi-string battery group 211 by second detect resistance R21 respectively with one end of the second battery management system 212, one end of second access switch module S21 is connected with one end of the second pre-access switch module S22, the other end of the second battery management system 212 is connected with the second plug 22, the other end of the second access switch module S21 is connected with the second plug 22, the other end that the other end of the second pre-access switch module S22 accesses switch module S21 by the second current-limiting resistance R22 and second is connected, the controlled end of the second access switch module S21 is connected with a control end of the second battery management system 212, the controlled end of the second pre-access switch module S22 is connected with another control end of the second battery management system 212.Just depict two large-capacity battery pack unit as an example in Fig. 1, certainly, under certain situation in the present embodiment, the quantity of large-capacity battery pack unit can also expand further.
In the present embodiment, this high capacity cell connecting system in parallel also comprises bus, first plug 12 or the second plug 22 also comprise first current legs, second largest current legs and small-signal pin, one end of first multi-string battery group 111 or one end of the second multi-string battery group 211 are connected with the anode of bus by first current legs, the other end or second battery management system 212 of the first battery management system 112 are connected with the anode of bus by small-signal pin, the other end of the first access switch module S11 or the other end of the second access switch module S21 are connected with the negative terminal of bus by second largest current legs, the anode of bus is connected with one end of load 3, the negative terminal of bus is connected with the other end of load 3.
Before large-capacity battery pack does not access, bus voltage is 0V, and bus and the connected mode of each large-capacity battery pack are connected by three lines, i.e. anode, negative terminal and detection line.When the first large-capacity battery pack 11 accesses bus, first large-capacity battery pack 11 is not when accessing bus, first multi-string battery group 111 disconnects and exporting, bus is accessed by the first capacity batteries group 11 of access input line justification, after first large-capacity battery pack 11 accesses bus, first battery management system 112 is opened the electric current of the first pre-access switch module S12 to the first large-capacity battery pack 11 and is detected, bus there is no load 3 and other large-capacity battery pack, now, pre-access electric current is zero or micro-electric current, first large-capacity battery pack 11 accesses bus and normally works.After the first large-capacity battery pack 11 completes access, bus voltage is the first Battery pack voltage, accesses the different place of situation after each group large-capacity battery pack access that Here it is with large-capacity battery pack below.
When the second large-capacity battery pack 21 starts to access bus, second large-capacity battery pack 21 is not when accessing bus, second large-capacity battery pack 21 disconnects and exporting, bus is accessed by the second largest capacity batteries group 21 of access input line justification, after the second large-capacity battery pack 21 accesses, second battery management system 212 opens the second pre-access switch module S22, the electric current of the second large-capacity battery pack 21 is detected, when the voltage of the second large-capacity battery pack 21 is greater than bus voltage, second large-capacity battery pack 21 is discharged to bus by pre-access loop, when the voltage of the second large-capacity battery pack 21 is less than bus voltage, bus begins through pre-access loop and charges to the second large-capacity battery pack 21.When the voltage of the second large-capacity battery pack 21 is identical with bus voltage, the electric current in pre-access loop is zero or micro-electric current, now opens the second access and opens and hang module S21, enter normal work.In like manner, when follow-up large-capacity battery pack access, identical with the second large-capacity battery pack 21, carry out identical step and detect and action, access bus when the electric current of large-capacity battery pack is zero current.By carrying out above-mentioned process to large-capacity battery pack, to ensure that the safety of large-capacity battery pack is incorporated to, and carry out normal operating conditions.
In the present embodiment, this high capacity cell connecting system in parallel also comprises bus switch S, and the anode of bus is connected with one end of load 3 by bus switch S.The connection between bus and load 3 can be switched on or switched off by switch S.In the present embodiment, first access switch module S11, the second access switch module S21, the first pre-access switch module S12 and the second pre-access switch module S22 are metal-oxide-semiconductor or relay or insulated gate bipolar transistor etc., certainly, under the certain situation of the present embodiment, when the large-capacity battery pack unit of parallel connection is multiple, access switch module in each large-capacity battery pack unit and pre-access switch module can be metal-oxide-semiconductor or relay or insulated gate bipolar transistor etc., can certainly be the controlled switchs of other types.
In a word, in the present embodiment, controlled by the turn-on time of the large-capacity battery pack unit to access, ensure that the safety of large-capacity battery pack is incorporated to, and can normally work.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a high capacity cell connecting system in parallel, it is characterized in that, comprise large-capacity battery pack unit and a load of multiple parallel connection, each described large-capacity battery pack unit comprises large-capacity battery pack and plug, described large-capacity battery pack is connected with described load by described plug, each described large-capacity battery pack unit is at different time connecting system, described large-capacity battery pack comprises multi-string battery group, detect resistance, battery management system, access switch module, pre-access switch module and current-limiting resistance, one end of described multi-string battery group is connected with described plug, its other end by described detection resistance respectively with one end of described battery management system, one end of access switch module is connected with one end of pre-access switch module, the other end of described battery management system is connected with described plug, the other end of described access switch module is connected with described plug, the other end of described pre-access switch module is connected by the other end of described current-limiting resistance with described access switch module, the controlled end of described access switch module is connected with a control end of described battery management system, the described controlled end of pre-access switch module is connected with another control end of described battery management system.
2. high capacity cell according to claim 1 connecting system in parallel, it is characterized in that, also comprise bus, described plug also comprises first current legs, second largest current legs and small-signal pin, one end of described multi-string battery group is connected with the anode of described bus by described first current legs, the other end of described battery management system is connected with the anode of described bus by described small-signal pin, the other end of described access switch module is connected with the negative terminal of described bus by described second largest current legs, the anode of described bus is connected with one end of described load, the negative terminal of described bus is connected with the other end of described load.
3. high capacity cell according to claim 2 connecting system in parallel, it is characterized in that, also comprise bus switch, the anode of described bus is connected by described bus switch one end with described load.
4. the connecting system in parallel of the high capacity cell according to claims 1 to 3 any one, it is characterized in that, described access switch module or pre-access switch module are metal-oxide-semiconductor.
5. the connecting system in parallel of the high capacity cell according to claims 1 to 3 any one, it is characterized in that, described access switch module or pre-access switch module are relay.
6. the connecting system in parallel of the high capacity cell according to claims 1 to 3 any one, it is characterized in that, described access switch module or pre-access switch module are insulated gate bipolar transistor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520912252.1U CN205141742U (en) | 2015-11-16 | 2015-11-16 | Large capacity battery access system that connects in parallel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520912252.1U CN205141742U (en) | 2015-11-16 | 2015-11-16 | Large capacity battery access system that connects in parallel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017685A (en) * | 2017-06-07 | 2017-08-04 | 安徽锐能科技有限公司 | The electric system on array |
| CN107104488A (en) * | 2017-06-07 | 2017-08-29 | 安徽锐能科技有限公司 | Electric method and storage medium on array |
| CN107769279A (en) * | 2016-08-18 | 2018-03-06 | 太普电子(常熟)有限公司 | The control method of cell parallel overlap joint |
-
2015
- 2015-11-16 CN CN201520912252.1U patent/CN205141742U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769279A (en) * | 2016-08-18 | 2018-03-06 | 太普电子(常熟)有限公司 | The control method of cell parallel overlap joint |
| CN107769279B (en) * | 2016-08-18 | 2020-11-17 | 太普动力新能源(常熟)股份有限公司 | Control method for parallel connection and lap joint of batteries |
| CN107017685A (en) * | 2017-06-07 | 2017-08-04 | 安徽锐能科技有限公司 | The electric system on array |
| CN107104488A (en) * | 2017-06-07 | 2017-08-29 | 安徽锐能科技有限公司 | Electric method and storage medium on array |
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