CN206178019U - Battery monomer voltage acquisition circuit - Google Patents
Battery monomer voltage acquisition circuit Download PDFInfo
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- CN206178019U CN206178019U CN201621236470.9U CN201621236470U CN206178019U CN 206178019 U CN206178019 U CN 206178019U CN 201621236470 U CN201621236470 U CN 201621236470U CN 206178019 U CN206178019 U CN 206178019U
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- switch
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Abstract
The utility model relates to a battery monomer voltage acquisition circuit, this circuit includes: battery package, first isolation chip, second septum are from chip, host processing ware and monomer voltage acquisition chip, still include: a service switch, the 2nd service switch, the 3rd service switch, first switch, second switch, third switch, fourth switch, the 5th switch, sixmo are closed, and the basis is closed to a service switch, the 2nd service switch, the 3rd service switch, first switch, second switch, third switch, fourth switch, the 5th switch, sixmo the topological structure disconnection or the closure of battery module in the battery package to make the host processing ware acquire all voltage of each single cell information in the battery package that monomer voltage acquisition chip gathered. Through the utility model discloses, through the utility model discloses, battery monomer voltage acquisition circuit's commonality has been improved to battery monomer voltage acquisition's security and reliability have been guaranteed.
Description
Technical field
The utility model is related to technical field of automotive electronics, and in particular to a kind of battery cell voltage collection circuit.
Background technology
Electric automobile has been increasingly becoming the new direction of automotive technology development, and in prior art, battery bag is vehicle
Energy is originated, and one or more battery module is included in battery bag, and battery modules are composed in series by multiple battery cells, electricity
In the management system of pond in monomer voltage acquisition chip collection battery modules battery cell voltage, isolating chip is by the height of battery bag
Pressure is isolated with the carrying out of battery cell low pressure, so that primary processor obtains the information of monomer voltage acquisition chip in real time, specifically,
Battery cell voltage collection circuit mainly has Acquisition Circuit in parallel as described in Figure 1 and series connection as shown in Figure 2 in battery bag
Acquisition Circuit.In Fig. 1, it is necessary to information of the primary processor to monomer voltage acquisition chip could be realized by N number of isolating chip
Collection.In fig. 2, connected by I2C serial bus between each monomer voltage acquisition chip, it is only necessary to by an isolated core
Piece can realize information gathering of the primary processor to each monomer voltage acquisition chip.Relative to Fig. 1, Fig. 2 reduces isolation
The usage quantity of chip, has saved cost.
The general communication that each monomer voltage acquisition chip is realized using I2C buses in fig. 2, the in battery bag is disconnected
During service switch between N number of battery modules and the N+1 battery modules, in fact it could happen that in n-th monomer voltage acquisition chip
Battery bag is still connected to the I2C connections between the N+1 monomer voltage acquisition chip, as shown in figure 3, in monomer voltage
Inside acquisition chip, there are a large amount of parasitic diodes, and these diodes make two high-pressure sections of monomer voltage acquisition chip
Holding joins end to end, so as to the situation for causing service switch not disconnect really, so as to have a strong impact on battery list in battery bag
The security of bulk voltage Acquisition Circuit.
In order to ensure the security of battery cell voltage collection circuit, two daisy chains as shown in Figure 4 are additionally provided
Battery voltage acquisition circuit.But the maintenance circuit position of the switch that Fig. 4 is provided relatively is fixed, if the structure of battery bag changes
Become, it is necessary to when changing service switch position, the circuit shown in Fig. 4 is also required to be changed, so as to increased design cost.
Utility model content
The utility model provides a kind of battery cell voltage collection circuit, to improve battery cell voltage collection circuit
Versatility, and ensure the safety and reliability of battery cell voltage acquisition.
To achieve the above object, the utility model provides following technical scheme：
A kind of battery cell voltage collection circuit, in the battery bag to being composed in series by one or more battery module
Each cell carry out voltage acquisition, the battery modules are composed in series by multiple cells；The circuit includes：First
Isolating chip, the second isolating chip, primary processor and the monomer voltage acquisition chip connected one to one with each battery modules,
Connected by I2C serial bus between different monomers voltage acquisition chip；First isolating chip is connected to the first monomer electricity
Between pressure acquisition chip and the primary processor；Second isolating chip is connected to N+1 monomer voltages acquisition chip and institute
State between primary processor, N >=1；Also include：First service switch, is arranged between N battery modules and N+1 battery modules；
Second service switch, is arranged between N battery modules and N-1 battery modules；The third dimension repaiies switch, is arranged on N+2 electricity
Between pond module and N+1 battery modules；First switch, is arranged on N+1 monomer voltages acquisition chip and N+2 monomer voltages
On I2C serial bus between acquisition chip；Second switch, is arranged on N monomer voltages acquisition chip and N+1 monomer voltages
On I2C serial bus between acquisition chip；3rd switch, is arranged on N monomer voltages acquisition chip and N-1 monomer voltages
On I2C serial bus between acquisition chip；4th switch, is arranged on two isolating chip and the N+2 monomer voltages
On I2C serial bus between acquisition chip；5th switch, is arranged on second isolating chip with N+1 monomers electricity
On I2C serial bus between pressure acquisition chip；6th switch, is arranged on second isolating chip with N monomers electricity
On I2C serial bus between pressure acquisition chip；First service switch, the second service switch, the third dimension are repaiied switch, first are opened
Pass, second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch are according to the topology of battery modules in the battery bag
Structure is opened or closed, so that primary processor obtains all monomer battery voltages in the battery bag that monomer voltage acquisition chip is gathered
Information.
Preferably, when first service switch disconnects, closure the second service switch, the third dimension are repaiied switch, first are opened
Close, the 3rd switchs and the 5th switch, disconnects second switch, the 6th switch and the 4th switch.
Preferably, when second service switch disconnects, closure the first service switch, the third dimension are repaiied switch, first are opened
Pass, second switch and the 6th switch, the switch of disconnection the 3rd, the 4th switch and the 5th switch.
Preferably, when the third dimension is repaiied to be switched off, the first service switch of closure, the second service switch, the 4th open
Pass, second switch and the 3rd switch, disconnect first switch, the 6th switch and the 5th switch.
Preferably, the first switch, the second switch, the 3rd switch, the 4th switch, the described 5th open
Close, the 6th switch is double-point double-throw switch.
The beneficial effects of the utility model are：
The utility model embodiment provide battery cell voltage collection circuit, in battery bag have the first service switch,
Second service switch and the third dimension repair switch, the first service switch, the second service switch, the third dimension repair switch, first switch,
The topological structure of second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th switch according to battery modules in battery bag
It is opened or closed, so that primary processor obtains all monomer battery voltages letters in the battery bag that monomer voltage acquisition chip is gathered
Breath.By the utility model, improve the versatility of battery cell voltage collection circuit and ensure that battery cell voltage is adopted
The safety and reliability of collection.
Brief description of the drawings
Fig. 1 is battery cell voltage parallel Acquisition Circuit structural representation in the prior art.
Fig. 2 is battery cell Voltage Series Acquisition Circuit structural representation in the prior art.
Fig. 3 is the non-disrupted configuration schematic diagram of service switch in existing battery cell voltage collection circuit.
Fig. 4 is two battery voltage acquisition electrical block diagrams of daisy chain in the prior art.
Fig. 5 is the structural representation of the utility model embodiment battery cell voltage collection circuit.
Marked in accompanying drawing：
K1, first switch K2, second switch K3, the 3rd switch K4, the 4th switch K5, the 5th switch K6, the 6th open
Close
Specific embodiment
In order that those skilled in the art can be further understood that feature of the present utility model and technology contents, with reference to
Drawings and embodiments elaborate to the utility model embodiment.
As shown in Figure 5 the structural representation of the utility model embodiment battery cell voltage collection circuit, for by
Each cell in the battery bag that one or more battery module is composed in series carries out voltage acquisition, and the battery modules are by more
Individual cell is composed in series, and the circuit includes：First isolating chip, the second isolating chip, primary processor and with each battery
The monomer voltage acquisition chip that module connects one to one, it is total by I2C serial ports between the different monomer voltage acquisition chips
Line is connected；First isolating chip is connected between the first monomer voltage acquisition chip and the primary processor；Described second
Isolating chip is connected between N+1 monomer voltages acquisition chip and the primary processor, N >=1；Also include：First maintenance is opened
Close, be arranged between N battery modules and N+1 battery modules；Second service switch, is arranged on N battery modules and N-1
Between battery modules；The third dimension repaiies switch, is arranged between N+2 battery modules and N+1 battery modules；First switch K1,
It is arranged on the I2C serial bus between N+1 monomer voltages acquisition chip and N+2 monomer voltage acquisition chips；Second opens
K2 is closed, is arranged on the I2C serial bus between N monomer voltages acquisition chip and N+1 monomer voltage acquisition chips；3rd
Switch K3, is arranged on the I2C serial bus between N monomer voltages acquisition chip and N-1 monomer voltage acquisition chips；The
Four switch K4, are arranged on the I2C serial bus between two isolating chip and the N+2 monomer voltage acquisition chips；
5th switch K5, is arranged on the I2C serial bus between second isolating chip and the N+1 monomer voltage acquisition chips
On；6th switch K6, the I2C serial ports being arranged between second isolating chip and the N monomer voltage acquisition chips is total
On line；First service switch, the second service switch, the third dimension repair switch, first switch K1, second switch K2, the 3rd switch K3,
4th switch K4, the 5th switch K5, the 6th switch K5 are opened or closed according to the topological structure of battery modules in the battery bag,
So that primary processor obtains all monomer battery voltage information in the battery bag that monomer voltage acquisition chip is gathered.
Specifically, when first service switch disconnects, closure the second service switch, the third dimension are repaiied switch, first are opened
K1, the 3rd switch K3 and the 5th switch K5 are closed, second switch K2, the 6th switch K6 and the 4th switch K4 is disconnected.Need
Bright, battery bag by disconnecting the first service switch, then can cut off the high pressure of whole battery bag, but be in maintenance
In battery bag maintenance process, the information of voltage of cell in battery bag can also be easily got, in the present embodiment,
The second service switch of closure and the third dimension is needed to repair switch.
Specifically, when second service switch disconnects, closure the first service switch, the third dimension are repaiied switch, first are opened
K1, second switch K2 and the 6th switch K6 are closed, the 3rd is disconnected and is switched K3, the 4th switch K4 and the 5th switch K5.Need
Bright, battery bag by disconnecting the second service switch, then can cut off the high pressure of whole battery bag, but be in maintenance
In battery bag maintenance process, the information of voltage of cell in battery bag can also be easily got, in the present embodiment,
The first service switch of closure and the third dimension is needed to repair switch.
Specifically, when the third dimension is repaiied to be switched off, the first service switch of closure, the second service switch, the 4th open
K4, second switch K2 and the 3rd switch K3 are closed, first switch K1, the 6th switch K6 and the 5th switch K5 is disconnected.Need
Bright, battery bag repaiies switch in maintenance by disconnecting the third dimension, then can cut off the high pressure of whole battery bag, but be
In battery bag maintenance process, the information of voltage of cell in battery bag can also be easily got, in the present embodiment,
Need to close the second service switch and the first service switch.
Specifically, the first switch K1, the second switch K2, the 3rd switch K3, the 4th switch K4, institute
State the 5th switch K5, the 6th switch K6 and be double-point double-throw switch.In the utility model embodiment, the first switch
K1, the second switch K2, the 3rd switch K3, the 4th switch K4, the 5th switch K5, the 6th switch K6
It is arranged between monomer voltage acquisition chip, and is connected by I2C serial bus between monomer voltage acquisition chip, therefore,
The I2C serial bus connected between monomer voltage acquisition chip can be completely cut through using double-point double-throw switch.
In sum, the battery cell voltage collection circuit that the utility model embodiment is provided, it is pre- between battery modules
First there is provided three service switch, so that three service switch can be opened or closed according to the design feature of battery bag；In order to
Ensure that no matter three service switch disconnect or close, primary processor can obtain electricity by monomer voltage acquisition chip
All monomer battery voltage information in the bag of pond, increased and switch, the are repaiied to the first service switch, the second service switch, the third dimension
One switch, second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch off or close setting；By this practicality
It is new, improve the versatility of battery cell voltage collection circuit, and ensure that the security of battery cell voltage acquisition with can
By property.
The utility model embodiment is described in detail above, specific embodiment used herein is to this practicality
New to be set forth, the explanation of above example is only intended to help and understands the utility model；Simultaneously for the one of this area
As technical staff, according to thought of the present utility model, will change in specific embodiments and applications, to sum up
Described, the utility model content should not be construed as to limitation of the present utility model.
Claims (5)
1. a kind of battery cell voltage collection circuit, in the battery bag to being composed in series by one or more battery module
Each cell carries out voltage acquisition, and the battery modules are composed in series by multiple cells；The circuit includes：First every
Off-chip piece, the second isolating chip, primary processor and the monomer voltage acquisition chip connected one to one with each battery modules, no
Connected by I2C serial bus between monomer voltage acquisition chip；First isolating chip is connected to the first monomer voltage
Between acquisition chip and the primary processor；Second isolating chip be connected to N+1 monomer voltages acquisition chip with it is described
Between primary processor, N >=1；Characterized in that, also including：First service switch, is arranged on N battery modules and N+1 batteries
Between module；Second service switch, is arranged between N battery modules and N-1 battery modules；The third dimension repaiies switch, sets
Between N+2 battery modules and N+1 battery modules；First switch, is arranged on N+1 monomer voltages acquisition chip and N+
On I2C serial bus between 2 monomer voltage acquisition chips；Second switch, is arranged on N monomer voltages acquisition chip and N+
On I2C serial bus between 1 monomer voltage acquisition chip；3rd switch, is arranged on N monomer voltages acquisition chip and N-
On I2C serial bus between 1 monomer voltage acquisition chip；4th switch, is arranged on two isolating chip and the N+2
On I2C serial bus between monomer voltage acquisition chip；5th switch, is arranged on second isolating chip and the N+
On I2C serial bus between 1 monomer voltage acquisition chip；6th switch, is arranged on second isolating chip and the N
On I2C serial bus between monomer voltage acquisition chip；First service switch, the second service switch, the third dimension repair switch,
One switch, second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch are according to battery modules in the battery bag
Topological structure is opened or closed, so that primary processor obtains all cells in the battery bag that monomer voltage acquisition chip is gathered
Information of voltage.
2. battery cell voltage collection circuit according to claim 1, it is characterised in that when first service switch is disconnected
When opening, the second service switch of closure, the third dimension repair switch, first switch, the 3rd switch and the 5th switch, disconnect second and open
Close, the 6th switchs and the 4th switch.
3. battery cell voltage collection circuit according to claim 1, it is characterised in that when second service switch is disconnected
When opening, the first service switch of closure, the third dimension repair switch, first switch, second switch and the 6th switch, disconnect the 3rd and open
Close, the 4th switchs and the 5th switch.
4. battery cell voltage collection circuit according to claim 1, it is characterised in that to repair switch disconnected when the third dimension
When opening, the first service switch of closure, the second service switch, the 4th switch, second switch and the 3rd switch disconnect first and open
Close, the 6th switchs and the 5th switch.
5. the battery cell voltage collection circuit according to claim any one of 1-4, it is characterised in that described first opens
Pass, the second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch are double-pole pair
Throw switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236470.9U CN206178019U (en) | 2016-11-18 | 2016-11-18 | Battery monomer voltage acquisition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236470.9U CN206178019U (en) | 2016-11-18 | 2016-11-18 | Battery monomer voltage acquisition circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178019U true CN206178019U (en) | 2017-05-17 |
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ID=58687102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621236470.9U Expired - Fee Related CN206178019U (en) | 2016-11-18 | 2016-11-18 | Battery monomer voltage acquisition circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962681A (en) * | 2019-01-18 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Monitoring system of storage battery, battery pack and electric automobile |
| CN110967648A (en) * | 2019-02-26 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Sampling circuit and control method thereof |
| CN111157910A (en) * | 2019-12-30 | 2020-05-15 | 北京四维智联科技有限公司 | Method, device and equipment for diagnosing structural rationality of battery pack |
-
2016
- 2016-11-18 CN CN201621236470.9U patent/CN206178019U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962681A (en) * | 2019-01-18 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Monitoring system of storage battery, battery pack and electric automobile |
| CN110967648A (en) * | 2019-02-26 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Sampling circuit and control method thereof |
| CN111157910A (en) * | 2019-12-30 | 2020-05-15 | 北京四维智联科技有限公司 | Method, device and equipment for diagnosing structural rationality of battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20191118 |