CN208548727U - A kind of battery modules in parallel equalising control device - Google Patents
A kind of battery modules in parallel equalising control device Download PDFInfo
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- CN208548727U CN208548727U CN201820939426.7U CN201820939426U CN208548727U CN 208548727 U CN208548727 U CN 208548727U CN 201820939426 U CN201820939426 U CN 201820939426U CN 208548727 U CN208548727 U CN 208548727U
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Abstract
The utility model discloses a kind of battery modules in parallel equalising control device, the battery pack for being made of the battery core of m group in parallel and n series connection group, including equalizing resistance network unit in parallel, equilibrium in parallel change road device network unit and voltage sample network unit.The device is in normal mode of operation, in each of battery pack parallel connection group, at least two battery core channels are opened, form balanced circuit in parallel, equalizing resistance in parallel in circuit spontaneously can carry out electric quantity balancing to the battery core in same group in parallel, to eliminate the same voltage difference in parallel for organizing interior battery core, avoid battery core after repeated charge, there are voltage differences and bring security risk due to there is no electric voltage equalization mechanism in same group of battery core in parallel.
Description
Technical field
The utility model relates to accumulator protecting field, in particular to a kind of equalising control device in parallel.
Background technique
Common high-tension battery packet is all to carry out series-parallel combination by a large amount of single batteries to be formed at present, and in order to reinforce
Structure is convenient for assembly, generally can be grouped to form battery modules for battery cell, be further combined to form battery to battery modules
Packet.It is to realize to increase continual mileage using more and structure under identical total voltage with present battery monomer technology and manufacture level
Effective ways.In battery pack topology mode, after can first being gone here and there simultaneously, can also carry out first and after go here and there, two kinds of topological shapes
Formula is fully equivalent in aspect of performance, but the difference in security performance, first go here and there after and form in safety relatively first and after
The form of string is more preferable, more resistant against the influence of the short-circuit failure of single or multiple battery cores.Meanwhile mould group rank is proposed identical
When safety requirements, module internal single battery and several more, the difficulty of realization is bigger.Therefore the topological structure pair after first going here and there simultaneously
The technical requirements of battery can also reduce.
For after first going here and there and topological structure, the biggest problems are that battery core is after repeated charge, same group and
Join battery core due to there is no electric voltage equalization mechanism, it may appear that voltage differences, and this trend can be progressively amplified, therefore be directed to and first gone here and there
Type of attachment simultaneously needs to solve this problem afterwards.
Utility model content
The purpose of this utility model is to provide a kind of battery modules in parallel equalising control device, for after first going here and there and opening up
The battery core flutterred in the battery pack of form is acquired and equilibrium.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of battery modules in parallel equalising control device, the electricity for being made of the battery core of m group in parallel and n series connection group
Chi Bao, the battery modules in parallel equalising control device change road device network including equalizing resistance network unit in parallel, equilibrium in parallel
Unit and voltage sample network unit, wherein
The parallel connection equalizing resistance network unit is made of several equalizing resistances in parallel, each equalizing resistance in parallel
Wherein one end is connected between the cascade adjacent battery core of any two, and the other end of the parallel connection equalizing resistance connects the parallel connection
Road device network unit is changed in equilibrium；
The parallel connection equilibrium, which changes road device network unit and at least changes road device by the parallel connection equilibrium of m+1 group, to be formed, parallel connection described in every group
Equilibrium is changed road device and is at least made of n paralleling switch, and wherein one end of the switch connects the another of the equalizing resistance in parallel
End, the other end that the switch of road device is changed in parallel connection equilibrium described in every group be connected to altogether it is same change road device node, and parallel connection described in each group is
The road Heng Huan device uses identical switch combination mode；When carrying out the parallel connection equilibrium of battery core voltage, road is changed in parallel connection equilibrium described in every group
Switch described at least two in device is in the conductive state.
The voltage sample network unit is made of multiple ADC sampling A/D chips, and the ADC sampling A/D chip is connected to adjacent
Two change between the device node of road.
Preferably, the battery modules in parallel equalising control device further includes series connection equalising network unit, and the series connection is equal
Weigh network unit include m series connection balance module, each series connection balance module connect as made of concatenating equalizer switch with
Equalizing resistance of connecting forms, each series connection balance module ADC sampling A/D chip in parallel.
Specifically, for the battery core of same group in parallel, by the equalizing resistance network unit in parallel and it is described simultaneously
The equilibrium that road device network unit realizes the battery core voltage is changed in connection equilibrium；For the battery core of same series connection group, by described
Equalizing resistance network unit in parallel, road device network unit is changed in the equilibrium in parallel and the series connection equalising network unit is realized jointly
The equilibrium of the battery core voltage.
Preferably, the battery modules in parallel equalising control device further includes fuse network unit in parallel balanced, it is described simultaneously
Join balanced fuse network unit and is series at that described in parallel equalizing resistance network unit is balanced with the parallel connection changes road device network unit
Between, the balanced fuse network unit in parallel is made of multiple balanced fuse resistors in parallel, and road device net is changed in the parallel connection equilibrium
The switch of network unit is at least connected the fuse resistor in parallel balanced.
Further, the equalizing resistance network unit in parallel is at least by (the m+1) × n equalizing resistance groups in parallel
It connects at least one described balanced fuse resistor in parallel at, each equalizing resistance in parallel.
Preferably, the voltage sample network unit is at least made of m ADC sampling A/D chip.
Compared with prior art, battery modules in parallel equalising control device provided by the utility model has below beneficial to effect
Fruit:
Battery modules in parallel equalising control device provided by the utility model, including equalizing resistance network unit in parallel, simultaneously
Road device network unit and voltage sample network unit are changed in connection equilibrium, for there is the battery topology of m group and n series connection group in parallel
Structure, equilibrium in parallel, which changes road device network and changes road device by the equilibrium in parallel of m+1 group, to be formed, and it is a by n that road device is changed in parallel connection equilibrium described in every group
Paralleling switch composition, described in normal acquisition when battery core voltage, every group of parallel connection equilibrium change at least two in the device of road, at most (n-1) it is a
Switch it is in the conductive state so that at least two battery core channels are opened, and are formed in parallel balanced in each of battery pack parallel connection group
Circuit, be formed into a loop in the low battery core battery core high as electricity of electricity load, and the equalizing resistance in parallel in circuit
The electric energy of the high battery core of electricity can be consumed to reduce its voltage, therefore, when battery modules in parallel provided by the utility model is balanced
When control device forms balanced circuit in parallel, so that it may spontaneously electric quantity balancing is carried out to the battery core in same group in parallel, to disappear
Except the same voltage difference in parallel for organizing interior battery core；Further, since the group battery core in parallel of two-stage neighboring shares same group of balanced electricity in parallel
Road device is changed in resistance and equilibrium in parallel, and therefore, every group of parallel connection equilibrium changes road device using identical unlatching assembled state voltage, it is ensured that
The battery core of each group in parallel can access equalising network in parallel.
Voltage sample network unit is made of m ADC sampling A/D chip, in each same group in parallel of ADC sampling A/D chip acquisition
The average voltage level of the battery core in access balanced circuit in parallel, the voltage of each battery core can be calculated using the average voltage level, right
Battery core state realizes real time monitoring；Also, battery modules in parallel equalising control device provided by the utility model, monitoring battery core electricity
Pressure and the equilibrium in parallel of battery core voltage can carry out simultaneously, will not the balanced circuit of parallel connection to battery core voltage generate interference or in
It is disconnected, a more stable balanced loop state is provided for the equilibrium in parallel of battery core voltage.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is a kind of circuit connection diagram of battery modules in parallel equalising control device provided by the embodiment of the utility model；
Fig. 2 is that a kind of battery pack of battery modules in parallel equalising control device provided by the embodiment of the utility model is series-parallel
Direction schematic diagram；
Fig. 3 a~Fig. 3 b is a kind of parallel connection of battery modules in parallel equalising control device provided by the embodiment of the utility model
The open mode schematic diagram that equilibrium changes road device when having 4 switches；
Fig. 4 is that road is changed in a kind of equilibrium in parallel of battery modules in parallel equalising control device provided by the embodiment of the utility model
Device individually opens the schematic diagram of a switch.
1- parallel connection equalizing resistance network unit, 2- balanced fuse network unit in parallel；
Road device network unit, 4- series connection equalising network unit are changed in 3- parallel connection equilibrium；
5- voltage sample network unit.
Specific embodiment
It is practical below in conjunction with this to keep the above objects, features, and advantages of the utility model more obvious and easy to understand
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, institute
The embodiment of description is only the utility model a part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, those of ordinary skill in the art's all other implementation obtained without creative labor
Example belongs to the range of the utility model protection.
In the description of the present invention, it should be noted that " m+1 group ", " m group ", " n group ", " n ", " m " etc.
Particular number is not necessarily represented, is only m based on battery pack group in parallel and n series connection group, for ease of description this reality
It is described with novel with simplified, rather than the element of indication or suggestion meaning must have specific quantity and specific connection side
Formula, therefore should not be understood as limiting the present invention.But it will be apparent to a skilled person that the present embodiment
In resistance can carry out series and parallel by multiple resistance and reach same technical effect, switch can also with it is multiple go here and there,
The obstructed opening ways of switch in parallel reach same technical effect, and equally, an ADC voltage sample chip can be by multiple
ADC voltage sample chip carries out series and parallel and reaches same technical effect.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection "
Shall be understood in a broad sense, for example, it may be connected in series, be also possible to be connected in parallel or each unit in component correspond and connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Embodiment one
Referring to Fig.1, Fig. 2, Fig. 3 a, Fig. 3 b or Fig. 4, Fig. 1 be a kind of battery modules provided by the embodiment of the utility model simultaneously
Join the circuit connection diagram of equalising control device, which is used for by m group in parallel and n series connection
The battery pack of the battery core Cell composition of group is counted from the total anode of battery pack to total cathode, and is usedIt indicates to be in battery pack
Y-th of in parallel group, the battery core of n-th series connection group, the device include that road device is changed in equalizing resistance network unit 1 in parallel, equilibrium in parallel
Network unit 3 and voltage sample network unit 5, wherein
Equalizing resistance network unit 1 in parallel is made of m+1 group, every group n equalizing resistance Rpbal in parallel, each parallel connection
Wherein one end of equalizing resistance Rpbal is connected between the cascade adjacent battery core Cell of any two, equalizing resistance in parallel
The other end of Rpbal connects equilibrium in parallel and changes road device network unit 3；1st group of parallel connection equalizing resistance Rpbal is connected to the 1st simultaneously
The anode of connection group battery core, m+1 group parallel connection equalizing resistance Rpbal are connected to the cathode of the m+1 group battery core in parallel, and in parallel equal
The road Heng Huan device network unit 3 cooperates, it is ensured that the battery core of the 1st and the m+1 group in parallel can access balanced circuit in parallel.
Equilibrium in parallel, which changes road device network unit 3 and changes road device by the equilibrium in parallel of m+1 group, to be formed, every group of parallel connection equilibrium change road device by
N paralleling switch S1~Sn composition, and the wherein one end switched connects the other end of equalizing resistance Rpbal in parallel, every group is in parallel
The other end that n switch S1~Sn of road device is changed in equilibrium be connected to altogether it is same change road device node M, share the road m+1 Ge Huan device node M0
~Mm；In normal acquisition battery core Cell voltage, every group of parallel connection equilibrium is changed at least two in the device of road, at most (n-1) a switch
In on state, and the switch S in the device of road is changed in each group parallel connection equilibrium1~SnUsing identical unlatching combination；Equilibrium in parallel is changed
Road device network unit 3 forms different conductings according to different equalization requirements in parallel and combines, and the battery core channel of conducting passes through in parallel balanced
Resistance Rpbal carries out equilibrium, to eliminate the same interior battery core of group in parallel (such as ) voltage
Difference；Further, since the group battery core in parallel of two-stage neighboring shares same group of parallel connection equalizing resistance and road device is changed in equilibrium in parallel, therefore,
Every group of parallel connection equilibrium changes road device using identical unlatching assembled state voltage, it is ensured that the battery core of each group in parallel can access
Equilibrium circuit in parallel.
Voltage sample network unit 5 is by m ADC sampling A/D chip ADC1~ADCmComposition, each ADC sampling A/D chip are connected to
Adjacent two change between the device node M of road.Battery modules in parallel equalising control device provided by the utility model, monitoring battery core voltage and
The equilibrium in parallel of battery core voltage can carry out simultaneously, will not generate interference to the balanced circuit in parallel of battery core voltage or interrupt,
A more stable balanced loop state is provided for the equilibrium in parallel of battery core voltage.
Further, by taking Uy in Fig. 1 as an example, a kind of battery modules in parallel equalising control device provided in this embodiment is analyzed
Sampled value formula, i.e., a kind of battery modules in parallel equalising control device provided in this embodiment are how to collect each battery core electricity
Pressure value, Uy is y-th of ADC voltage sample chip numerical value collected in voltage sample network unit 5, and Uy can pass through two sides
Parallel resistance network unit derive, it is assumed that n battery core of y-th of group in parallelAll
It changes road device by equilibrium in parallel to open, then Uy can use n voltage equation expression, i.e.,
Uy=(i1 y–i1 x)Rpbal+Ucell1 y+(i1 y–i1 z)Rpbal
……
In above-mentioned n formula, when not opening series connection equilibrium, there is following quantitative relationship between electric current:
When opening series connection equilibrium, there is following quantitative relationship between electric current:
It is available after two kinds of current relationships to be brought into the n expression formula of Uy:
I.e.
It is can be seen that by the formula regardless of whether to open series connection balanced, battery core voltage value will not all be acquired and cause to miss
Difference, the voltage of acquisition are equal to the average voltage that the battery core channel that road device is opened is changed by equilibrium in parallel, this be the present embodiment provides
The natural advantage that has of battery modules in parallel equalising control device.
It is same to be directed to the topological structure for having m group in parallel and n series connection group battery core, if equilibrium in parallel is changed road device and is only opened
Single channel is acquired voltage, cannot form balanced circuit in parallel, and system will lose the function of equilibrium in parallel；If simultaneously
Connection equilibrium changes road device and opens all channels progress equilibriums in parallel, then can only acquire the average voltage in parallel group, system will
Lose the ability detected to each battery core voltage.Therefore, equal in battery modules in parallel provided by the embodiment of the utility model
It weighs in control device, in order to guarantee to be able to carry out while to voltage sample, different degrees of parallel connection is balanced, and at least two is logical
Road, at most n-1 channel will open simultaneously, that is, road device at least two switch is changed in each parallel connection equilibrium, at most n-1 switch is wanted
It opens simultaneously, balanced intensity in parallel has the selection of n-2 kind.
It is a kind of battery modules in parallel Balance route dress provided by the embodiment of the utility model for example, referring to Fig. 3 a, Fig. 3 b
The open mode schematic diagram that the equilibrium in parallel set changes road device when having 4 switch, Fig. 3 a are that road device open mode 1 is changed in equilibrium in parallel, are schemed
3b is that road device open mode 2 is changed in equilibrium in parallel, and for the topological structure with 4 series connection groups, road device is changed in equilibrium in parallel has 4 to open
There are 2 kinds of switch combinations in pass, i.e., opens any 2 channels in 4 channels simultaneously, and open simultaneously any in 4 channels
3 channels, such as mode 2 in mode 1 in Fig. 3 a and Fig. 3 b.Within a duty cycle, i.e., in t1~t4, in Fig. 3 a mode 1
In, there are 3 channels while opening；In Fig. 3 b mode 2, there are 2 channels while opening.
Road device is changed in a kind of equilibrium in parallel of battery modules in parallel equalising control device provided by the embodiment of the utility model n
The open state that 2 channels are opened simultaneously in a cycle (t1~tn) when a switch can indicate are as follows:
| t1 | t2 | t3 | t4 | … | t(n-2) | t(n-1) | tn | |
| S1 | It opens | It closes | It closes | It closes | … | It closes | It closes | It opens |
| S2 | It opens | It opens | It closes | It closes | … | It closes | It closes | It closes |
| S3 | It closes | It opens | It opens | It closes | … | It closes | It closes | It closes |
| S4 | It closes | It closes | It opens | It opens | … | It closes | It closes | It closes |
| … | … | … | … | … | … | … | … | … |
| S(n-2) | It closes | It closes | It closes | It closes | … | It opens | It closes | It closes |
| S(n-1) | It closes | It closes | It closes | It closes | … | It opens | It opens | It closes |
| Sn | It closes | It closes | It closes | It closes | … | It closes | It opens | It opens |
Road device is changed in a kind of equilibrium in parallel of battery modules in parallel equalising control device provided by the embodiment of the utility model n
The open state that 3 channels are opened simultaneously in a cycle (t1~tn) when a switch can indicate are as follows:
| t1 | t2 | t3 | t4 | … | t(n-2) | t(n-1) | tn | |
| S1 | It opens | It closes | It closes | It closes | … | It closes | It opens | It opens |
| S2 | It opens | It opens | It closes | It closes | … | It closes | It closes | It opens |
| S3 | It opens | It opens | It opens | It closes | … | It closes | It closes | It closes |
| S4 | It closes | It opens | It opens | It opens | … | It closes | It closes | It closes |
| … | … | … | … | … | … | … | … | … |
| S(n-2) | It closes | It closes | It closes | It closes | … | It opens | It closes | It closes |
| S(n-1) | It closes | It closes | It closes | It closes | … | It opens | It opens | It closes |
| Sn | It closes | It closes | It closes | It closes | … | It opens | It opens | It opens |
Under above-mentioned switching strategy, voltage acquisition derivation process in reference implementation example three, it is assumed that opened using (n-2) kind
The mode that a channel i (1≤i≤n) is opened simultaneously in off status, battery modules in parallel Balance route dress provided in this embodiment
The sampling policy set are as follows:
(1) a duty cycle it is all change road device switch state (t1~tn) under, utilize 5 (m of voltage sample network unit
A ADC voltage sample chip) voltage sample is carried out, each ADC voltage sample chip has carried out n times sampling, the sampling pair of this n times
Average voltage when answering a channel i (1≤i≤n) while opening, i.e., each ADC voltage sample chip obtain a n member 1 time
Equation group, each equation is using i (1≤i≤n) a battery core voltage for being connected as unknown number in equation group, simultaneously with battery core in Fig. 1
Connection groupFor, according to ADCyCollected n voltage value in one duty cycle,
List the first 1 equation of n th order n group of a n:
(2) after the sampling of every n times, each corresponding n first 1 equation of n th order n group in parallel of organizing is solved, it is available this
One voltage in parallel for organizing interior all n battery cores, obtains the voltage of all m × n battery cores (all battery cores in battery pack) according to this.
When calculating battery core voltage, for the first time using the sampled value of ADC voltage sample chip t1~tn time, ADC voltage is used second
Sampling A/D chip t2~t (n+1) secondary sampled value, and so on carry out sliding window calculating.Sampling time first time longest, later every time
When changing road device state and changing, a battery core voltage value can be all calculated.
But in practical applications, due to the difference of connecting part contact resistance, the difference of harness self-resistance, Rpbal
The internal resistance etc. of each route inside trueness error, controller can all cause battery core voltage acquisition error delta U, n-th of series connection occur
Group, the battery core Acquisition Error of y-th of group in parallel are usedIt indicates.
Still by taking Uy in Fig. 1 as an example, its actual sample value formula is analyzed, i.e.,
Uy=(i1 y–i1 x)Rpbal+Ucell1 y+(i1 y–i1 z)Rpbal+ΔU1 y
……
So
For above-mentioned online error problem, filled using battery modules in parallel Balance route provided by the embodiment of the utility model
Error compensation can also be realized to online error by setting:
It (1) is a kind of battery modules in parallel equalising control device provided by the embodiment of the utility model refering to Fig. 4, Fig. 4
The schematic diagram that road device individually opens a switch is changed in equilibrium in parallel, and every the set time, peripheral control unit issues control signal, will
All m+1 equilibriums in parallel are changed road device and are only opened the same switch Si (1≤i≤n), and measurement accesses voltage sample network at this time
Concatenated m economize on electricity core voltage U in i-th of series connection group of unit 5cell i 1,Ucell i 2,Ucell i 3,…,Ucell i x,Ucell i y,…,Ucell i m。
(2) the normal work mould that road device restores at least two switch, at most (n-1) a switch while opening is changed in equilibrium in parallel
Formula measures the average voltage of each group conducting battery core in parallel.By taking y-th in Fig. 1 group in parallel as an example, it is assumed that j (1≤j≤n) is a at this time
Channel is opened simultaneously, by a duty cycle t1~tn, measures n average voltage level U1, U2,…,Un, and then obtain n mistake
Eikonal equation:
(3) from above-mentioned n equation, y-th of n error in parallel for organizing interior battery core under the present circumstances can be solved
It is worth Δ U1 y,
(4) by above-mentioned error amount Δ U1 y,It is stored in controller nonvolatile storage.
(5) for y-th of group in parallel, above-mentioned error amount is substituted into after voltage sample network unit 5 samples next time and is obtained
N actual sample value formula, solve equation, the available single battery core voltage value by error compensation.
Using above-mentioned sampling principle, in battery modules in parallel equalising control device provided by the embodiment of the utility model,
Each ADC sampling A/D chip collects the average voltage level of the battery core in access balanced circuit in parallel in same group in parallel, flat using this
Equal voltage value can calculate the voltage of each battery core, realize and monitor in real time to battery core state；Also, road device is changed using equilibrium in parallel
Network unit 3 is reasonably combined unlatching, so that parallel connection equalising control device provided in this embodiment only needs m ADC electricity
Pressure sampling A/D chip can be obtained by the voltage value of each battery core, without providing an ADC voltage acquisition core to each battery core
Piece has effectively saved cost；In addition, the monitoring process of the above battery core voltage, is based on the battery core voltage to same group in parallel
Realize to the equilibrium of battery core voltage parallel and monitoring battery core voltage while carrying out in balancer process in parallel.
Embodiment two
With continued reference to Fig. 1, a kind of battery modules in parallel equalising control device provided in this embodiment further includes that series connection is balanced
Network unit 4, series connection equalising network unit 4 includes m series connection balance module, and each series connection balance module is by series connection equalizer switch
With series connection equalizing resistance Rsbal composition, each series connection balance module ADC sampling A/D chip in parallel, i.e., each series connection equilibrium model
Block is both connected to two adjacent change between the device node of road.
When balance module of connecting be connected with its both ends it is in parallel it is balanced change road device simultaneously and have channel opening when, will be to access
The battery core of series connection equalising network unit 4 carries out series connection equilibrium, for example, voltage sample network unit 5 monitors battery coreVoltage
Value is higher than the voltage value of second series connection group other battery core, then sends control signal by peripheral control unit, then changes road device being connected to
Node MxIn switch S2Road device node M is changed with being connected toyIn switch S2When conducting, equalising network unit 4 of connecting in figure is connected
In switch Sy, by battery coreIt connects in series connection equilibrium circuit, to eliminate battery coreWith its group of unifying to connect its
The pressure difference of his battery core.
Battery modules in parallel equalising control device provided in this embodiment further includes balanced fuse network unit 2 in parallel, should
Equilibrium fuse network unit 2 in parallel be series at equalizing resistance network unit 1 in parallel it is balanced with parallel connection change road device network unit 3 it
Between, equilibrium fuse network unit 2 in parallel is made of m+1 group, every group n parallel connection equilibrium fuse resistor Fpbal, in parallel balanced molten
Silk resistance Fpbal is connected in series with the balanced switch one-to-one correspondence for changing road device network unit 3 in parallel, meanwhile, each balanced electricity in parallel
Hinder the balanced fuse resistor Fpbal in parallel of Rpbal series connection one.Equilibrium fuse network unit 2 in parallel is for balanced circuit in parallel
It is limited with the electric current in balanced circuit of connecting, to prevent when short circuit occurs in battery core, abnormal high current occurs in equilibrium circuit in parallel.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (6)
1. a kind of battery modules in parallel equalising control device, the battery for being made of the battery core of m group in parallel and n series connection group
Packet, which is characterized in that the battery modules in parallel equalising control device is changed including equalizing resistance network unit in parallel, equilibrium in parallel
Road device network unit and voltage sample network unit, wherein
The parallel connection equalizing resistance network unit is made of several equalizing resistances in parallel, and each equalizing resistance in parallel is wherein
One end is connected between the cascade adjacent battery core of any two, and the other end connection of the parallel connection equalizing resistance is described in parallel balanced
Change road device network unit；
The parallel connection equilibrium, which changes road device network unit and at least changes road device by the equilibrium in parallel of m+1 group, to be formed, the equilibrium of parallel connection described in every group
It changes road device to be at least made of n paralleling switch, wherein one end of the switch connects the other end of the equalizing resistance in parallel, often
The other end for the switch that road device is changed in the group equilibrium in parallel be connected to altogether it is same change road device node, and road is changed in parallel connection equilibrium described in each group
Device uses identical switch combination mode；When carrying out the parallel connection equilibrium of battery core voltage, parallel connection equilibrium described in every group is changed in the device of road
Switch described at least two is in the conductive state；
The voltage sample network unit is made of multiple ADC sampling A/D chips, and the ADC sampling A/D chip is connected to adjacent two and changes
Between the device node of road.
2. battery modules in parallel equalising control device according to claim 1, which is characterized in that the battery modules in parallel
Equalising control device further includes series connection equalising network unit, and the series connection equalising network unit includes m series connection balance module, often
A series connection balance module connects equalizer switch made of concatenating and series connection equalizing resistance forms, each series connection equilibrium
The wired in parallel one ADC sampling A/D chip.
3. battery modules in parallel equalising control device according to claim 2, which is characterized in that for same group in parallel
The battery core changes road device network unit and realizes the battery core by the equalizing resistance network unit in parallel and the equilibrium in parallel
The equilibrium of voltage；For the battery core of same series connection group, pass through the parallel connection equalizing resistance network unit, the equilibrium in parallel
It changes road device network unit and the series connection equalising network unit realizes the equilibrium of the battery core voltage jointly.
4. battery modules in parallel equalising control device according to claim 1 or 2, which is characterized in that the battery modules
Equalising control device in parallel further includes balanced fuse network unit in parallel, and the balanced fuse network unit in parallel is series at described
Equalizing resistance network unit in parallel is balanced with the parallel connection to change between the device network unit of road, the balanced fuse network unit in parallel
It is made of multiple balanced fuse resistors in parallel, the switch that road device network unit is changed in the parallel connection equilibrium is at least connected described in one simultaneously
Join balanced fuse resistor.
5. battery modules in parallel equalising control device according to claim 4, which is characterized in that the parallel connection equalizing resistance
Network unit is at least made of (the m+1) × n equalizing resistances in parallel, and each equalizing resistance in parallel connects at least one
The balanced fuse resistor in parallel.
6. battery modules in parallel equalising control device according to claim 1, which is characterized in that the voltage sample network
Unit is at least made of m ADC sampling A/D chip.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551196A (en) * | 2018-06-19 | 2018-09-18 | 汽-大众汽车有限公司 | A kind of battery modules in parallel equalising control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551196A (en) * | 2018-06-19 | 2018-09-18 | 汽-大众汽车有限公司 | A kind of battery modules in parallel equalising control device |
| CN108551196B (en) * | 2018-06-19 | 2023-11-10 | 一汽-大众汽车有限公司 | Parallel balance control device for battery modules |
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