Cluster-level controller and control system for parallel batteries
By configuring conversion circuits and digital-to-analog conversion circuits in the cluster-level controller, the problem of high manufacturing cost of the cluster-level controller is solved, and effective feedback of current and voltage is achieved, thereby reducing manufacturing costs.
Patent Information
- Application Number
- CN202423247159.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing cluster-level controllers require additional power supplies, resulting in higher manufacturing costs.
By configuring a conversion circuit, the DC power output from the main controller is converted into DC power that meets the requirements of the cluster-level controller, and current and voltage feedback is obtained through a digital-to-analog conversion circuit, thereby reducing the manufacturing cost of the cluster-level controller.
This reduces the manufacturing cost of cluster-level controllers while meeting the management requirements of parallel batteries.
Smart Images
Figure CN223758024U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of battery, more specifically, the utility model relates to a cluster level controller and control system of parallel connection battery. BACKGROUND
[0002] With the rapid development of battery, battery as relatively clean energy can be applied to different application scenarios to provide electric energy. At present, the existing battery can be connected in parallel to provide electric energy for the load in the form of parallel connection battery, and the corresponding parallel connection battery is managed by a cluster level controller, and the cluster level controller is managed by a main controller to realize efficient charging and discharging of the parallel connection battery. However, in order to realize the management of the cluster level controller to the parallel connection battery, the existing cluster level controller needs to be configured with an additional power supply, which makes the manufacturing cost of the cluster level controller higher. SUMMARY
[0003] An object of the utility model is to provide a cluster level controller and control system of parallel connection battery.
[0004] According to one aspect of the utility model, a cluster level controller of parallel connection battery is provided, which comprises:
[0005] a first controller;
[0006] a conversion circuit, a first end of the conversion circuit is electrically connected with a first end of the first controller, and a second end of the conversion circuit is used for being electrically connected with a main controller;
[0007] a digital-to-analog conversion circuit, a first end of the digital-to-analog conversion circuit is electrically connected with a second end of the first controller, and a second end of the digital-to-analog conversion circuit is respectively electrically connected with a current sampling end and a voltage sampling end of the parallel connection battery.
[0008] Optionally, the conversion circuit comprises a first partial rectifier and a second partial rectifier, a first end of the first partial rectifier is used as the first end of the conversion circuit, a second end of the first partial rectifier is used as the second end of the conversion circuit, a third end of the first partial rectifier is electrically connected with a first end of the second partial rectifier, and a second end of the second partial rectifier is electrically connected with a motor connection end of the cluster level controller.
[0009] Optionally, the conversion circuit further comprises an isolation circuit, which is connected between the third end of the first partial rectifier and the first end of the second partial rectifier.
[0010] Optionally, the isolation circuit comprises a transformer, a primary coil of the transformer is electrically connected with the third end of the first partial rectifier, and a secondary coil of the transformer is electrically connected with the first end of the second partial rectifier.
[0011] Optionally, the first partial rectifier device comprises a first DC / DC conversion circuit and a first DC / AC conversion circuit, a first end of the first DC / DC conversion circuit is the first end of the first partial rectifier device, a second end of the first DC / DC conversion circuit is the second end of the first partial rectifier device, and a third end of the first DC / DC conversion circuit is connected with a first end of the first DC / AC conversion circuit, a second end of the first DC / AC conversion circuit is the third end of the first partial rectifier device.
[0012] Optionally, the second partial rectifier device comprises a second DC / AC conversion circuit, a first end of the second DC / AC conversion circuit is the first end of the second partial rectifier device, and a second end of the second DC / AC conversion circuit is the second end of the second partial rectifier device.
[0013] Optionally, the cluster-level controller further comprises a second serial chip connected between the second end of the second partial rectifier device and the motor connection end of the cluster-level controller.
[0014] Optionally, the cluster-level controller further comprises a first serial chip connected between the second end of the conversion circuit and the main controller.
[0015] According to one aspect of the present application, a control system is provided, which comprises the cluster-level controller of the parallel battery as described in the first aspect, the digital-to-analog conversion circuit in the cluster-level controller is electrically connected with the current sampling end and the voltage sampling end of the parallel battery respectively, and the second end of the conversion circuit in the cluster-level controller is electrically connected with the main controller.
[0016] Optionally, the control system further comprises a heat dissipation motor, which is electrically connected with the motor connection end of the cluster-level controller.
[0017] One technical effect of the present application is that the cluster-level controller of the parallel battery can convert the DC power output by the main controller into DC power meeting the requirements of the cluster-level controller through the configured conversion circuit, so that the cluster-level controller can obtain the current and voltage in the operation process of the parallel battery through the digital-to-analog conversion circuit after being powered on, thereby achieving the purpose of reducing the manufacturing cost of the cluster-level controller.
[0018] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.
[0020] Figure 1 is a structure block diagram of a cluster level controller of a parallel battery in an embodiment of the present application;
[0021] Figure 2 is a structure block diagram of a cluster level controller of a parallel battery in another embodiment of the present application;
[0022] Figure 3 is a structure block diagram of a parallel battery in an embodiment of the present application. DETAILED DESCRIPTION
[0023] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.
[0024] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the present application and its applications or uses.
[0025] Techniques and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.
[0026] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of exemplary embodiments can have different values.
[0027] Note that like reference numerals and letters indicate like items in the accompanying drawings and, as such, no further discussion in relation to such items is deemed necessary.
[0028] Figure 1 is a structure block diagram of a cluster level controller of a parallel battery in an embodiment of the present application. As shown in Figure 1 the cluster level controller 100 includes:
[0029] a first controller 10;
[0030] a conversion circuit, a first end of the conversion circuit is electrically connected with a first end of the first controller 10, and a second end of the conversion circuit is configured to be electrically connected with the master controller 200;
[0031] The first end of the digital-to-analog conversion circuit 30 is electrically connected to the second end of the first controller 10, and the second end of the digital-to-analog conversion circuit 30 is electrically connected to the current sampling end and the voltage sampling end of the parallel battery respectively.
[0032] In the embodiment, the first controller 10 is a control chip, which can control the charging and discharging of the parallel battery through the feedback of the current and voltage of the parallel battery by the digital-to-analog conversion circuit 30. The specific control chip control the charging and discharging of the parallel battery is prior art, which is not specifically described here.
[0033] In the embodiment, as shown in Figure 2 The parallel battery is composed of a plurality of first batteries Bat1 connected in parallel, and the negative electrode of each first battery Bat1 is connected with a current sampling circuit 11, and the negative electrode connection point of the plurality of first batteries Bat1 is connected with a voltage sampling circuit 12. The current sampling circuit 11 and the voltage sampling circuit 12 can be electrically connected to the digital-to-analog conversion circuit 30, so that the current sampling circuit 11 can feed back the current of the corresponding first battery Bat1 to the digital-to-analog conversion circuit 30, and the voltage sampling circuit 12 can feed back the voltage of the parallel battery to the digital-to-analog conversion circuit 30.
[0034] In the embodiment, the conversion circuit has a direct current / direct current conversion function, which enables the direct current output by the main controller 200 to be boosted or stepped down and then output to the first controller 10, and the first controller 10 can obtain the direct current required by the first controller 10.
[0035] In other words, the cluster-level controller 100 of the parallel battery can convert the direct current output by the main controller 200 into direct current that meets the requirements of the cluster-level controller 100 through the configured conversion circuit, so that the cluster-level controller 100 can obtain the current and voltage during the operation of the parallel battery through the digital-to-analog conversion circuit 30 after being powered on, so as to reduce the manufacturing cost of the cluster-level controller 100.
[0036] In some embodiments, in order to further reduce the manufacturing cost of the cluster-level controller 100, the conversion circuit includes a first part of rectifier device 21 and a second part of rectifier device 23, the first end of the first part of rectifier device 21 as the first end of the conversion circuit, the second end of the first part of rectifier device 21 as the second end of the conversion circuit, the third end of the first part of rectifier device 21 is electrically connected to the first end of the second part of rectifier device 23, and the second end of the second part of rectifier device 23 is electrically connected to the motor connection end of the cluster-level controller 100.
[0037] In the embodiment, the cluster-level controller can configure a heat dissipation motor 300, which can be arranged in a cabinet accommodating the parallel battery, and when the temperature inside the cabinet is too high, the first controller 10 can control the conversion circuit to work so that the heat dissipation motor 300 works to cool the inside of the cabinet.
[0038] In the embodiment, the main controller 200 can simultaneously provide power for the heat dissipation motor 300, that is, the main controller 200 converts the output direct current into direct current meeting the requirements of the heat dissipation motor 300 through the first part of the rectifier 21 and the second part of the rectifier 23. And by multiplexing the first part of the rectifier 21, the manufacturing cost of the cluster-level controller 100 can be effectively reduced.
[0039] In some embodiments, in order to improve the safety factor of the cluster-level controller 100, the conversion circuit further includes an isolation circuit 22 connected between the third end of the first part of the rectifier 21 and the first end of the second part of the rectifier 23.
[0040] In some embodiments, in order to achieve electrical isolation between the first part of the rectifier 21 and the second part of the rectifier 23, the isolation circuit 22 can include a transformer, the primary coil of the transformer is electrically connected to the third end of the first part of the rectifier 21, and the secondary coil of the transformer is electrically connected to the first end of the second part of the rectifier 23.
[0041] In some embodiments, the first part of the rectifier 21 includes a first direct current / direct current conversion circuit and a first direct current / alternating current conversion circuit, the first end of the first direct current / direct current conversion circuit is the first end of the first part of the rectifier 21, the second end of the first direct current / direct current conversion circuit is the second end of the first part of the rectifier 21, the third end of the first direct current / direct current conversion circuit is connected to the first end of the first direct current / alternating current conversion circuit, and the second end of the first direct current / alternating current conversion circuit is the third end of the first part of the rectifier 21.
[0042] In the embodiment, the first direct current / direct current conversion circuit can be an existing voltage reduction circuit or a voltage increase circuit, which is not limited here. The first direct current / alternating current conversion circuit can be an existing direct current / alternating current conversion circuit, which is not limited here. By setting the first direct current / direct current conversion circuit and the first direct current / alternating current conversion circuit, the direct current output by the main controller 200 can be processed to increase or decrease voltage, and the direct current output by the main controller 200 can be converted into alternating current that can be output to the isolation circuit 22.
[0043] In some embodiments, in order to provide electric energy for the heat dissipation motor 300, the second partial rectifier 23 comprises a second DC / AC conversion circuit, a first end of the second DC / AC conversion circuit being the first end of the second partial rectifier 23, and a second end of the second DC / AC conversion circuit being the second end of the second partial rectifier 23.
[0044] In the present embodiment, the second DC / AC conversion circuit can be an existing DC / AC conversion circuit, which is not limited herein. Through the second DC / AC conversion circuit, the AC point output by the isolation circuit 22 can be converted into DC power meeting the requirements of the heat dissipation motor 300.
[0045] In some embodiments, the cluster-level controller 100 further comprises a second serial chip 50, which is connected between the second end of the second partial rectifier 23 and the motor connection end of the cluster-level controller 100.
[0046] In the present embodiment, the communication end of the second serial chip 50 is also connected with the serial port of the first controller 10, so that the second serial chip 50 can output the DC power output by the second partial rectifier 23 to the heat dissipation motor 300 under the control of the first controller 10, to control the heat dissipation motor 300 to work.
[0047] In some embodiments, the cluster-level controller 100 further comprises a first serial chip 40, which is connected between the second end of the conversion circuit and the main controller 200.
[0048] In the present embodiment, the communication end of the first serial chip 40 is also connected with the serial port of the first controller 10, so that the first serial chip 40 can adjust the conversion efficiency of the DC power output by the first partial rectifier 21 under the control of the first controller 10.
[0049] According to the control system provided in the embodiments of the present application, the cluster-level controller 100 of the parallel battery in any of the above embodiments is included, the digital-to-analog conversion circuit 30 in the cluster-level controller 100 is electrically connected with the current sampling end and the voltage sampling end of the parallel battery respectively, and the second end of the conversion circuit in the cluster-level controller 100 is electrically connected with the main controller 200.
[0050] In some embodiments, the control system further comprises a heat dissipation motor 300, which is electrically connected with the motor connection end of the cluster-level controller 100.
[0051] Although some specific embodiments of the present application have been described in detail by way of example with reference to the drawings, it is to be understood that the examples are for illustrative purposes only and are not to be construed as limiting the scope of the present application. It is to be understood that modifications can be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.
Claims
1. A cluster level controller for parallel connected batteries, characterized by, The cluster-level controller comprises: a first controller; a conversion circuit, a first end of the conversion circuit being electrically connected to a first end of the first controller, and a second end of the conversion circuit being configured to be electrically connected to a main controller; a digital-to-analog conversion circuit, a first end of the digital-to-analog conversion circuit being electrically connected to a second end of the first controller, and a second end of the digital-to-analog conversion circuit being electrically connected to a current sampling end and a voltage sampling end of the parallel battery respectively; 2. The cluster level controller of parallel connected batteries of claim 1, wherein, the conversion circuit comprises a first partial rectifier and a second partial rectifier, a first end of the first partial rectifier serving as the first end of the conversion circuit, a second end of the first partial rectifier serving as the second end of the conversion circuit, a third end of the first partial rectifier being electrically connected to a first end of the second partial rectifier, and a second end of the second partial rectifier being electrically connected to a motor connection end of the cluster-level controller.
3. The cluster level controller of parallel connected batteries of claim 2, wherein, The conversion circuit further comprises an isolation circuit, which is connected between the third end of the first partial rectifier and the first end of the second partial rectifier.
4. The cluster level controller of parallel connected batteries of claim 1, wherein, The isolation circuit comprises a transformer, a primary coil of the transformer being electrically connected to the third end of the first partial rectifier, and a secondary coil of the transformer being electrically connected to the first end of the second partial rectifier.
5. The cluster level controller of parallel connected batteries of claim 1, wherein, The first partial rectifier comprises a first direct current / direct current conversion circuit and a first direct current / alternating current conversion circuit, a first end of the first direct current / direct current conversion circuit serving as the first end of the first partial rectifier, a second end of the first direct current / direct current conversion circuit serving as the second end of the first partial rectifier, a third end of the first direct current / direct current conversion circuit being connected to a first end of the first direct current / alternating current conversion circuit, and a second end of the first direct current / alternating current conversion circuit serving as the third end of the first partial rectifier.
6. The cluster level controller of parallel connected batteries of claim 1, wherein, The second partial rectifier comprises a second direct current / alternating current conversion circuit, a first end of the second direct current / alternating current conversion circuit serving as the first end of the second partial rectifier, and a second end of the second direct current / alternating current conversion circuit serving as the second end of the second partial rectifier.
7. The cluster level controller of parallel connected batteries of claim 1, wherein, The cluster-level controller further comprises a second serial port chip, which is connected between the second end of the second partial rectifier and the motor connection end of the cluster-level controller.
8. A control system characterized by, The cluster-level controller further comprises a first serial port chip, which is connected between the second end of the conversion circuit and the main controller.
9. The control system of claim 8, wherein, The control system comprises the cluster-level controller of the parallel battery according to any one of claims 1 to 7, the digital-to-analog conversion circuit in the cluster-level controller being electrically connected to the current sampling end and the voltage sampling end of the parallel battery respectively, and the second end of the conversion circuit in the cluster-level controller being electrically connected to the main controller. The control system further comprises a heat dissipation motor, which is electrically connected to the motor connection end of the cluster-level controller.